Journal articles: 'Neural nets. eng' – Grafiati (2024)

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

We present a novel approach to dealing with overfitting in black box models. It is based on the leverages of the samples, that is, on the influence that each observation has on the parameters of the model. Since overfitting is the consequence of the model specializing on specific data points during training, we present a selection method for nonlinear models based on the estimation of leverages and confidence intervals. It allows both the selection among various models of equivalent complexities corresponding to different minima of the cost function (e.g., neural nets with the same number of hidden units) and the selection among models having different complexities (e.g., neural nets with different numbers of hidden units). A complete model selection methodology is derived.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Recurrent nets are in principle capable to store past inputs to produce the currently desired output. Because of this property recurrent nets are used in time series prediction and process control. Practical applications involve temporal dependencies spanning many time steps, e.g. between relevant inputs and desired outputs. In this case, however, gradient based learning methods take too much time. The extremely increased learning time arises because the error vanishes as it gets propagated back. In this article the de-caying error flow is theoretically analyzed. Then methods trying to overcome vanishing gradients are briefly discussed. Finally, experiments comparing conventional algorithms and alternative methods are presented. With advanced methods long time lag problems can be solved in reasonable time.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Modern multi-physics codes, often employed in the simulation and development of thermal nuclear systems, depend heavily on thermal neutron interaction data to determine the space-time distribution of fission events. Therefore, the computationally expensive analysis of such systems motivates the advancement of thermal scattering law (TSL) data delivery methods. Despite considerable improvements on past strategies, current implementations are limited by trade-offs between speed, accuracy, and memory allocation. Furthermore, many of these implementations are not easily adaptable to additional input parameters (e.g., temperature), relying instead on various interpolation schemes. In this work, a novel approach to this problem is demonstrated with a neural network trained on beryllium oxide thermal scattering data generated by the FLASSH nuclear data code of the Low Energy Interaction Physics (LEIP) group at North Carolina State University. Using open-source deep learning libraries, this approach maps a unique functional form to the S(α,β,T) probability distribution function, providing a continuous representation of the TSL across the input phase space. For a given material, the result is a highly accurate, neural thermal scattering (NeTS) module that enables rapid sampling and execution with minimal memory requirements. Moreover, extension of the NeTS phase space to other parameters of interest (e.g., pressure, radiation damage) is highly possible. Consequently, NeTS modules for different materials under various conditions can be stored together in material “lockers” and accessed on-the-fly to generate problem specific cross-sections.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Perineuronal nets (PNNs) are extracellular molecules that form around neurons near the end of critical periods during development. They surround neuronal cell bodies and proximal dendrites. PNNs inhibit the formation of new connections and may concentrate around rapidly firing inhibitory interneurons. Previous work characterized the important role of perineuronal nets in plasticity in the visual system, amygdala, and spinal cord of rats. In this study, we use immunohistochemistry to survey the distribution of perineuronal nets in representative areas of the primate brain. We also document changes in PNN prevalence in these areas in animals of different ages. We found that PNNs are most prevalent in the cerebellar nuclei, surrounding >90% of the neurons there. They are much less prevalent in cerebral cortex, surrounding less than 10% of neurons in every area that we examined. The incidence of perineuronal nets around parvalbumin-positive neurons (putative fast-spiking interneurons) varies considerably between different areas in the brain. Our survey indicates that the presence of PNNs may not have a simple relationship with neural plasticity and may serve multiple functions in the central nervous system.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Abstract Motivation Artificial intelligence, trained via machine learning (e.g. neural nets, random forests) or computational statistical algorithms (e.g. support vector machines, ridge regression), holds much promise for the improvement of small-molecule drug discovery. However, small-molecule structure-activity data are high dimensional with low signal-to-noise ratios and proper validation of predictive methods is difficult. It is poorly understood which, if any, of the currently available machine learning algorithms will best predict new candidate drugs. Results The quantile-activity bootstrap is proposed as a new model validation framework using quantile splits on the activity distribution function to construct training and testing sets. In addition, we propose two novel rank-based loss functions which penalize only the out-of-sample predicted ranks of high-activity molecules. The combination of these methods was used to assess the performance of neural nets, random forests, support vector machines (regression) and ridge regression applied to 25 diverse high-quality structure-activity datasets publicly available on ChEMBL. Model validation based on random partitioning of available data favours models that overfit and ‘memorize’ the training set, namely random forests and deep neural nets. Partitioning based on quantiles of the activity distribution correctly penalizes extrapolation of models onto structurally different molecules outside of the training data. Simpler, traditional statistical methods such as ridge regression can outperform state-of-the-art machine learning methods in this setting. In addition, our new rank-based loss functions give considerably different results from mean squared error highlighting the necessity to define model optimality with respect to the decision task at hand. Availability and implementation All software and data are available as Jupyter notebooks found at https://github.com/owatson/QuantileBootstrap. Supplementary information Supplementary data are available at Bioinformatics online.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

ABSTRACT Since upcoming telescopes will observe thousands of strong lensing systems, creating fully automated analysis pipelines for these images becomes increasingly important. In this work, we make a step towards that direction by developing the first end-to-end differentiable strong lensing pipeline. Our approach leverages and combines three important computer science developments: (i) convolutional neural networks (CNNs), (ii) efficient gradient-based sampling techniques, and (iii) deep probabilistic programming languages. The latter automatize parameter inference and enable the combination of generative deep neural networks and physics components in a single model. In the current work, we demonstrate that it is possible to combine a CNN trained on galaxy images as a source model with a fully differentiable and exact implementation of gravitational lensing physics in a single probabilistic model. This does away with hyperparameter tuning for the source model, enables the simultaneous optimization of nearly 100 source and lens parameters with gradient-based methods, and allows the use of efficient gradient-based posterior sampling techniques. These features make this automated inference pipeline potentially suitable for processing a large amount of data. By analysing mock lensing systems with different signal-to-noise ratios, we show that lensing parameters are reconstructed with per cent-level accuracy. More generally, we consider this work as one of the first steps in establishing differentiable probabilistic programming techniques in the particle astrophysics community, which have the potential to significantly accelerate and improve many complex data analysis tasks.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Most modern commodity imaging systems we use directly for photography—or indirectly rely on for downstream applications—employ optical systems of multiple lenses that must balance deviations from perfect optics, manufacturing constraints, tolerances, cost, and footprint. Although optical designs often have complex interactions with downstream image processing or analysis tasks, today’s compound optics are designed in isolation from these interactions. Existing optical design tools aim to minimize optical aberrations, such as deviations from Gauss’ linear model of optics, instead of application-specific losses, precluding joint optimization with hardware image signal processing (ISP) and highly parameterized neural network processing. In this article, we propose an optimization method for compound optics that lifts these limitations. We optimize entire lens systems jointly with hardware and software image processing pipelines, downstream neural network processing, and application-specific end-to-end losses. To this end, we propose a learned, differentiable forward model for compound optics and an alternating proximal optimization method that handles function compositions with highly varying parameter dimensions for optics, hardware ISP, and neural nets. Our method integrates seamlessly atop existing optical design tools, such as Zemax . We can thus assess our method across many camera system designs and end-to-end applications. We validate our approach in an automotive camera optics setting—together with hardware ISP post processing and detection—outperforming classical optics designs for automotive object detection and traffic light state detection. For human viewing tasks, we optimize optics and processing pipelines for dynamic outdoor scenarios and dynamic low-light imaging. We outperform existing compartmentalized design or fine-tuning methods qualitatively and quantitatively, across all domain-specific applications tested.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

This article studies the computational power of various discontinuous real computational models that are based on the classical analog recurrent neural network (ARNN). This ARNN consists of finite number of neurons; each neuron computes a polynomial net function and a sigmoid-like continuous activation function. We introduce arithmetic networks as ARNN augmented with a few simple discontinuous (e.g., threshold or zero test) neurons. We argue that even with weights restricted to polynomial time computable reals, arithmetic networks are able to compute arbitrarily complex recursive functions. We identify many types of neural networks that are at least as powerful as arithmetic nets, some of which are not in fact discontinuous, but they boost other arithmetic operations in the net function (e.g., neurons that can use divisions and polynomial net functions inside sigmoid-like continuous activation functions). These arithmetic networks are equivalent to the Blum-Shub-Smale model, when the latter is restricted to a bounded number of registers. With respect to implementation on digital computers, we show that arithmetic networks with rational weights can be simulated with exponential precision, but even with polynomial-time computable real weights, arithmetic networks are not subject to any fixed precision bounds. This is in contrast with the ARNN that are known to demand precision that is linear in the computation time. When nontrivial periodic functions (e.g., fractional part, sine, tangent) are added to arithmetic networks, the resulting networks are computationally equivalent to a massively parallel machine. Thus, these highly discontinuous networks can solve the presumably intractable class of PSPACE-complete problems in polynomial time.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

There is great interest in methods for computing that do not involve digital machines. Many computational paradigms were inspired by brain research, such as Boolean neuronal logic [McCulloch & Pitts, 1943], the perceptron [Rosenblatt, 1958], attractor neural networks [Hopfield, 1982] and cellular neural nets [Chua & Yang, 1988]. All these paradigms abstract biological circuits to artificial neural networks, i.e. interconnected units (neurons) that perform computations based on the connections between the units (synapses). Here we present a novel computational framework based on polychronous wavefront dynamics. It is entirely different from an artificial neural network paradigm, rather it is based on temporal and spatial patterns of activity in pulse-propagating media and their interaction with transponders, which create pulses in response to receiving appropriate inputs, e.g. two coincident input pulses. A pulse propagates as a circular wave from its source to other transponders. Computations result from interactions between transponders, and they are encoded by the exact physical locations of transponders and by precise timings of pulses. We illustrate temporal pattern recognition, reverberating memory, temporal signal analysis and basic logical operations using polychronous wavefront computations. This work reveals novel principles for designing nanoscale computational devices.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

It is well known that artificial neural nets can be used as approximators of any continous functions to any desired degree and therefore be used e.g. in high-speed, real-time process control. Nevertheless, for a given application and a given network architecture the non-trivial task rests to determine the necessary number of neurons and the necessary accuracy (number of bits) per weight for a satisfactory operation. In this paper the accuracy of the weights and the number of neurons are seen as general system parameters which determine the maximal output information (i.e. the approximation error) by the absolute amount (network description complexity) and the relative distribution of information contained in the network. A new principle of optimal information distribution is proposed and the conditions for the optimal system parameters are derived. For two examples, a simple linear approximation of a non-linear, quadratic function and a non-linear approximation of the inverse kinematic transformation used in robot manipulator control, the principle of optimal information distribution gives the the optimal system parameters, i.e. the number of neurons and the different resolutions of the variables.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

The quality of multi-tag imaging greatly affects the effective detection of multi-tag. When multi-tag moves rapidly, the image may have serious dynamic blur, and tags can not be detected efficiently. In previous work, it is generally assumed that blur kernel and noise stationary to improve image quality. However, the dynamic deblurring of Radio Frequency Identification (RFID) multi-tag imaging is an ill-posed inverse problem. In this paper, firstly, blur-sharp multi-tag image pairs are made by superimposing and averaging the adjoin random frames. Then, we propose blind deblurring for dynamic RFID multi-tag imaging based on conditional generative adversarial nets (CGANs), which adds perceptual loss and content loss to generator to make image sharper. Finally, tags are detected by YOLOv3 in real time in end-to-end manner. Experimental results demonstrate that PSNR is at least 0.56dB higher and speed is at least 31.25 % faster than that of the current improved convolution neural networks (CNN). CGANs can remove image blur better, which has great superiority in the field of dynamic multi-tag imaging. In addition, YOLOv3 detects multi-tag quickly, thereby improving the detection accuracy.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

To construct small mobile networks without performance loss and address the over-fitting issues caused by the less abundant training datasets, this paper proposes a novel super sparse convolutional (SSC) kernel, and its corresponding network is called SSC-Net. In a SSC kernel, every spatial kernel has only one non-zero parameter and these non-zero spatial positions are all different. The SSC kernel can effectively select the pixels from the feature maps according to its non-zero positions and perform on them. Therefore, SSC can preserve the general characteristics of the geometric and the channels’ differences, resulting in preserving the quality of the retrieved features and meeting the general accuracy requirements. Furthermore, SSC can be entirely implemented by the “shift” and “group point-wise” convolutional operations without any spatial kernels (e.g., “3×3”). Therefore, SSC is the first method to remove the parameters’ redundancy from the both spatial extent and the channel extent, leading to largely decreasing the parameters and Flops as well as further reducing the img2col and col2img operations implemented by the low leveled libraries. Meanwhile, SSC-Net can improve the sparsity and overcome the over-fitting more effectively than the other mobile networks. Comparative experiments were performed on the less abundant CIFAR and low resolution ImageNet datasets. The results showed that the SSC-Nets can significantly decrease the parameters and the computational Flops without any performance losses. Additionally, it can also improve the ability of addressing the over-fitting problem on the more challenging less abundant datasets.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

The concept of redundancy is a critical resource of the brain enhancing the resilience to neural damages and dysfunctions. In the present work, we propose a graph-based methodology to investigate the connectivity redundancy in brain networks. By taking into account all the possible paths between pairs of nodes, we considered three complementary indexes, characterizing the network redundancy (i) at the global level, i.e. the scalar redundancy (ii) across different path lengths, i.e. the vectorial redundancy (iii) between node pairs, i.e. the matricial redundancy. We used this procedure to investigate the functional connectivity estimated from a dataset of high-density EEG signals in a group of healthy subjects during a no-task resting state. The statistical comparison with a benchmark dataset of random networks, having the same number of nodes and links of the EEG nets, revealed a significant (p < 0.05) difference for all the three indexes. In particular, the redundancy in the EEG networks, for each frequency band, appears radically higher than random graphs, thus revealing a natural tendency of the brain to present multiple parallel interactions between different specialized areas. Notably, the matricial redundancy showed a high (p < 0.05) redundancy between the scalp sensors over the parieto-occipital areas in the Alpha range of EEG oscillations (7.5–12.5 Hz), which is known to be the most responsive channel during resting state conditions.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Spiking neural networks (SNN) are among the most computationally intensive types of simulation models, with node counts on the order of up to 10 11 . Currently, there is intensive research into hardware platforms suitable to support large-scale SNN simulations, whereas several of the most widely used simulators still rely purely on the execution on CPUs. Enabling the execution of these established simulators on heterogeneous hardware allows new studies to exploit the many-core hardware prevalent in modern supercomputing environments, while still being able to reproduce and compare with results from a vast body of existing literature. In this article, we propose a transition approach for CPU-based SNN simulators to enable the execution on heterogeneous hardware (e.g., CPUs, GPUs, and FPGAs), with only limited modifications to an existing simulator code base and without changes to model code. Our approach relies on manual porting of a small number of core simulator functionalities as found in common SNN simulators, whereas the unmodified model code is analyzed and transformed automatically. We apply our approach to the well-known simulator NEST and make a version executable on heterogeneous hardware available to the community. Our measurements show that at full utilization, a single GPU achieves the performance of about 9 CPU cores. A CPU-GPU co-execution with load balancing is also demonstrated, which shows better performance compared to CPU-only or GPU-only execution. Finally, an analytical performance model is proposed to heuristically determine the optimal parameters to execute the heterogeneous NEST.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Abstract. Buildings are a major element in the formation of cities and are essential for urban mapping. The precise extraction of buildings from remote sensing data has become a significant topic and has received much attention in recent years. The recently developed convolutional neural networks have shown effective and superior performance to perform well on learning high-level and discriminative features in extracting buildings because of the outstanding feature learning and end-to-end pixel labelling abilities. However, it is difficult to use the features of different levels with a certain degree of importance that is appropriate to deep learning networks. To tackle this problem, a network based on U-Nets and the attention mechanism block was proposed. The network contains an encoder part and a decoder part and a spatial attention module. The special architecture presented in this article enhances the propagation of features and effectively utilizes the features at various levels to reduce errors. The other remarkable thing is that attention module blocks only lead to a minimal increase in model complexity. We effectively demonstrate an improvement of building extraction accuracy on challenging Potsdam and Vaihingen benchmark datasets. The results of this paper show that the proposed architecture improves building extraction in very high resolution remote sensing images compared to previous models.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Entity–relation extraction has attracted considerable attention in recent years as a fundamental task in natural language processing. The goal of entity–relation extraction is to discover the relation structures of entities from a natural language sentence. Most existing models approach this task using recurrent neural nets (RNNs); however, given the sequential nature of RNNs, the states cannot be computed in parallel, which slows the machine comprehension. In this paper, we propose a new end-to-end model based on dilated convolutional units and the gate linear mechanism as an alternative to those recurrent models. We find that relation extraction becomes more difficult as the sentence length increases. In this paper, we introduce dynamic convolutions based on lightweight convolutions to process long sequences, which thus reduces the number of parameters to a low level. Another challenge in relation extraction is relation spans potentially overlapping in a sentence, representing a bottleneck for the detection of multiple relational triplets. To alleviate this problem, we design an entirely new prediction scheme to extract relational pairs and additionally boost performance. We conduct experiments on two widely used datasets, and the results show that our model outperforms the baselines by a large margin.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Abstract Recent years have witnessed a growing trend of utilizing reviews to improve the performance and interpretability of recommender systems. Almost all existing methods learn the latent representations from the user’s and the item’s historical reviews and then combine these two representations for rating prediction. The fatal limitation in these methods is that they are unable to utilize the most predictive review of the target user for the target item since such a review is not available at test time. In this paper, we propose a novel recommendation model, called AGTR, which can generate the unseen target review with adversarial training for rating prediction. To this end, we develop a unified framework to combine the rating tailored generative adversarial nets for synthetic review generation and the neural latent factor module using the generated target review along with historical reviews for rating prediction. Extensive experiments on four real-world datasets demonstrate that our model achieves the state-of-the-art performance in both rating prediction and review generation tasks.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

The main aim of the research is to predict, as early as possible, which student will drop out in the Higher Education (HE) context. Artificial Intelligence (AI) is used for replacing repetitive human activities, e.g. in the field of for autonomous driving or for the task of classification pictures. In these areas IA competes with the man with fairly satisfactory results and, in the case of college dropout, it is extremely unlikely that an experienced teacher can “predict” the student’s academic success based on only on data provided by administrative offices. In this study used administrative data of about 6,000 students enrolled in the Department of Education of the University of Roma Tre to train convolutive neural nets (RNC). The trained network provides a probabilistic indicating, for each student, the probability of abandonment. Then, the trained network provides a predictive model that predicts whether the student will dropout. The accuracy of the obtained deep learning models ranged from 67.1% for the first-year students up to 94.3% for the third-year students.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

A good process understanding is the foundation for process optimization, process monitoring, end-point detection, and estimation of the end-product quality. Performing good process measurements and the construction of process models will contribute to a better process understanding. To improve the process knowledge it is common to build process models. These models are often based on first principles such as kinetic rates or mass balances. These types of models are also known as hard or white models. White models are characterized by being generally applicable but often having only a reasonable fit to real process data. Other commonly used types of models are empirical or black-box models such as regression and neural nets. Black-box models are characterized by having a good data fit but they lack a chemically meaningful model interpretation. Alternative models are grey models, which are combinations of white models and black models. The aim of a grey model is to combine the advantages of both black-box models and white models. In a qualitative case study of monitoring industrial batches using near-infrared (NIR) spectroscopy, it is shown that grey models are a good tool for detecting batch-to-batch variations and an excellent tool for process diagnosis compared to common spectroscopic monitoring tools.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Current operational forecasts of solar eruptions are made by human experts using a combination of qualitative shape-based classification systems and historical data about flaring frequencies. In the past decade, there has been a great deal of interest in crafting machine-learning (ML) flare-prediction methods to extract underlying patterns from a training set – e.g. a set of solar magnetogram images, each characterized by features derived from the magnetic field and labeled as to whether it was an eruption precursor. These patterns, captured by various methods (neural nets, support vector machines, etc.), can then be used to classify new images. A major challenge with any ML method is the featurization of the data: pre-processing the raw images to extract higher-level properties, such as characteristics of the magnetic field, that can streamline the training and use of these methods. It is key to choose features that are informative, from the standpoint of the task at hand. To date, the majority of ML-based solar eruption methods have used physics-based magnetic and electric field features such as the total unsigned magnetic flux, the gradients of the fields, the vertical current density, etc. In this paper, we extend the relevant feature set to include characteristics of the magnetic field that are based purely on the geometry and topology of 2D magnetogram images and show that this improves the prediction accuracy of a neural-net based flare-prediction method.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Parasites and pathogens are possibly key evolutionary forces driving recognition systems. However, empirical evidence remains sparse. The ubiquitous pioneering ant Formica fusca is exploited by numerous socially parasitic ant species. We compared the chemical cue diversity, egg and nest mate recognition abilities in two Finnish and two UK populations where parasite pressure is high or absent, respectively. Finnish populations had excellent egg and nest mate discrimination abilities, which were lost in the UK populations. The loss of discrimination behaviour correlates with a loss in key recognition compounds (C 25 -dimethylalkanes). This was not owing to genetic drift or different ecotypes since neutral gene diversity was the same in both countries. Furthermore, it is known that the cuticular hydrocarbon profiles of non-host ant species remain stable between Finland and the UK. The most parsimonious explanation for the striking difference in the cue diversity (number of C 25 -dimethylalkanes isomers) between the UK and Finland populations is the large differences in parasite pressure experienced by F. fusca in the two countries. These results have strong parallels with bird (cuckoo) studies and support the hypothesis that parasites are driving recognition cue diversity.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

AbstractThe main factors to be tackled if environmental sustainability becomes Libya's national goal are: first, to base desalination and pumping on renewable energy (e.g., solar, wind); second, to invest oil receipts to export solar electricity; and third, to achieve these two before oil or water are depleted. Because water is paramount for sustainability and economic development, if pumping fossil water and desalination become based on renewable energy, then low-cost freshwater can become the basis for sustainability. As Libya is so well placed to generate solar electricity, the most sustainable choice is to accelerate the transition to renewables before international climate treaties force coal and, later, oil to be left unused in the ground. Libya could lead in making Europe carbon-neutral through massive exports of solar electricity. This would be highly profitable for Libya and at the same time would help achieve sustainability. Quasi-sustainability of non-renewable resources (e.g., oil) could be achieved by investing oil receipts in Libya's sovereign funds, so that by the time hydrocarbons are exhausted a sustainable income is generated for Libyans in perpetuity. This could also provide social safety nets, create jobs and increase human capital formation.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Abstract Fragile X syndrome (FXS) is a leading genetic cause of autism with symptoms that include sensory processing deficits. In both humans with FXS and a mouse model [Fmr1 knockout (KO) mouse], electroencephalographic (EEG) recordings show enhanced resting state gamma power and reduced sound-evoked gamma synchrony. We previously showed that elevated levels of matrix metalloproteinase-9 (MMP-9) may contribute to these phenotypes by affecting perineuronal nets (PNNs) around parvalbumin (PV) interneurons in the auditory cortex of Fmr1 KO mice. However, how different cell types within local cortical circuits contribute to these deficits is not known. Here, we examined whether Fmr1 deletion in forebrain excitatory neurons affects neural oscillations, MMP-9 activity, and PV/PNN expression in the auditory cortex. We found that cortical MMP-9 gelatinase activity, mTOR/Akt phosphorylation, and resting EEG gamma power were enhanced in CreNex1/Fmr1Flox/y conditional KO (cKO) mice, whereas the density of PV/PNN cells was reduced. The CreNex1/Fmr1Flox/y cKO mice also show increased locomotor activity, but not the anxiety-like behaviors. These results indicate that fragile X mental retardation protein changes in excitatory neurons in the cortex are sufficient to elicit cellular, electrophysiological, and behavioral phenotypes in Fmr1 KO mice. More broadly, these results indicate that local cortical circuit abnormalities contribute to sensory processing deficits in autism spectrum disorders.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

The fields of avian egg and nestling colour detection have rapidly advanced owing to the application of visual models, which have allowed assessing of evolutionary questions considering receiver perception. Here, I first review the literature aiming to identify patterns of avian visual model usage. Second, I elaborate on limitations in the application of the receptor-noise limited perceptual (RNL hereafter) model. A systematic literature review revealed that the RNL model was the most used approach (81% of studies) in the field, and that most studies (76%) were concerned with classic evolutionary questions in avian brood parasitism. Some known limitations of the RNL model deal with model assumptions and parameterization, or, a poor consideration of post-detection neural processes. Others, however, are specific of the fields of egg and nestling discrimination and deal with the highly variable nature of ambient light at the nests, the complex colour design of eggs and nestlings, the multi-dimensional nature of perception, and the possible implication of learning. I, therefore, conclude that visual models should be used with caution to establish inference about egg and nestling discrimination, and rather be used to provide reasonable hypotheses which need to be validated with behavioural experiments. This article is part of the theme issue ‘Signal detection theory in recognition systems: from evolving models to experimental tests'.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Human fall in the elderly population is one of the major causes of injury or bone fracture: it can be a cause of various injuries (e.g., fracture, concussion, and joint inflammation). It also could be a possible cause of death in a severe case. To detect human fall, various fall detection algorithms have been devised. Most fall detection algorithms rely on signals from a single accelerometer or gyroscope and use a threshold-based method to detect the human fall. However, these algorithms need careful adjustment of a threshold for each subject and cannot detect the direction of falls. In this study, we propose a novel fall recognition algorithm using a pair of a tri-axial accelerometer and a tri-axial gyroscope. Our fall recognition algorithm utilizes a set of augmented features including autoregressive (AR) modeling coefficients of signals, signal magnitude area (SMA), and gradients of angles from the sensors. After Linear Discriminant Analysis (LDA) of the augmented features, an Artificial Neural Nets (ANNs) is utilized to recognize four directional human falls: namely forward fall, backward fall, right-side fall, and left-side fall. Our recognition results show the mean recognition rate of 95.8%. Our proposed fall recognition technique should be useful in the investigation of fall-related injuries and possibly in the prevention of falls for the elderly.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Medical imaging refers to visualization techniques to provide valuable information about the internal structures of the human body for clinical applications, diagnosis, treatment, and scientific research. Segmentation is one of the primary methods for analyzing and processing medical images, which helps doctors diagnose accurately by providing detailed information on the body’s required part. However, segmenting medical images faces several challenges, such as requiring trained medical experts and being time-consuming and error-prone. Thus, it appears necessary for an automatic medical image segmentation system. Deep learning algorithms have recently shown outstanding performance for segmentation tasks, especially semantic segmentation networks that provide pixel-level image understanding. By introducing the first fully convolutional network (FCN) for semantic image segmentation, several segmentation networks have been proposed on its basis. One of the state-of-the-art convolutional networks in the medical image field is U-Net. This paper presents a novel end-to-end semantic segmentation model, named Ens4B-UNet, for medical images that ensembles four U-Net architectures with pre-trained backbone networks. Ens4B-UNet utilizes U-Net’s success with several significant improvements by adapting powerful and robust convolutional neural networks (CNNs) as backbones for U-Nets encoders and using the nearest-neighbor up-sampling in the decoders. Ens4B-UNet is designed based on the weighted average ensemble of four encoder-decoder segmentation models. The backbone networks of all ensembled models are pre-trained on the ImageNet dataset to exploit the benefit of transfer learning. For improving our models, we apply several techniques for training and predicting, including stochastic weight averaging (SWA), data augmentation, test-time augmentation (TTA), and different types of optimal thresholds. We evaluate and test our models on the 2019 Pneumothorax Challenge dataset, which contains 12,047 training images with 12,954 masks and 3,205 test images. Our proposed segmentation network achieves a 0.8608 mean Dice similarity coefficient (DSC) on the test set, which is among the top one-percent systems in the Kaggle competition.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

The current interest in big data, machine learning and data analytics has generated the widespread impression that such methods are capable of solving most problems without the need for conventional scientific methods of inquiry. Interest in these methods is intensifying, accelerated by the ease with which digitized data can be acquired in virtually all fields of endeavour, from science, healthcare and cybersecurity to economics, social sciences and the humanities. In multiscale modelling, machine learning appears to provide a shortcut to reveal correlations of arbitrary complexity between processes at the atomic, molecular, meso- and macroscales. Here, we point out the weaknesses of pure big data approaches with particular focus on biology and medicine, which fail to provide conceptual accounts for the processes to which they are applied. No matter their ‘depth’ and the sophistication of data-driven methods, such as artificial neural nets, in the end they merely fit curves to existing data. Not only do these methods invariably require far larger quantities of data than anticipated by big data aficionados in order to produce statistically reliable results, but they can also fail in circ*mstances beyond the range of the data used to train them because they are not designed to model the structural characteristics of the underlying system. We argue that it is vital to use theory as a guide to experimental design for maximal efficiency of data collection and to produce reliable predictive models and conceptual knowledge. Rather than continuing to fund, pursue and promote ‘blind’ big data projects with massive budgets, we call for more funding to be allocated to the elucidation of the multiscale and stochastic processes controlling the behaviour of complex systems, including those of life, medicine and healthcare. This article is part of the themed issue ‘Multiscale modelling at the physics–chemistry–biology interface’.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

The common cuckoo has several host-specific races, each with a distinctive egg that tends to match its host's eggs. Here, we show that the host-race specializing on reed warblers also has a host-specific nestling adaptation. In playback experiments, the nestling cuckoos responded specifically to the reed warbler's distinctive ‘churr’ alarm (given when a predator is near the nest), by reducing begging calls (likely to betray their location) and by displaying their orange-red gape (a preparation for defence). When reed warbler-cuckoos were cross-fostered and raised by two other regular cuckoo hosts (robins or dunnocks), they did not respond to the different alarms of these new foster-parents. Instead, they retained a specific response to reed warbler alarms but, remarkably, increased both calling and gaping. This suggests innate pre-tuning to reed warbler alarms, but with exposure necessary for development of the normal silent gaping response. By contrast, cuckoo chicks of another host-race specializing on redstarts showed no response to either redstart or reed warbler alarms. If host-races are restricted to female cuckoo lineages, then chick-tuning in reed warbler-cuckoos must be under maternal control. Alternatively, some host-races might be cryptic species, not revealed by the neutral genetic markers studied so far.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Detailed and accurate information on the spatial variation of land cover and land use is a critical component of local ecology and environmental research. For these tasks, high spatial resolution images are required. Considering the trade-off between high spatial and high temporal resolution in remote sensing images, many learning-based models (e.g., Convolutional neural network, sparse coding, Bayesian network) have been established to improve the spatial resolution of coarse images in both the computer vision and remote sensing fields. However, data for training and testing in these learning-based methods are usually limited to a certain location and specific sensor, resulting in the limited ability to generalize the model across locations and sensors. Recently, generative adversarial nets (GANs), a new learning model from the deep learning field, show many advantages for capturing high-dimensional nonlinear features over large samples. In this study, we test whether the GAN method can improve the generalization ability across locations and sensors with some modification to accomplish the idea “training once, apply to everywhere and different sensors” for remote sensing images. This work is based on super-resolution generative adversarial nets (SRGANs), where we modify the loss function and the structure of the network of SRGANs and propose the improved SRGAN (ISRGAN), which makes model training more stable and enhances the generalization ability across locations and sensors. In the experiment, the training and testing data were collected from two sensors (Landsat 8 OLI and Chinese GF 1) from different locations (Guangdong and Xinjiang in China). For the cross-location test, the model was trained in Guangdong with the Chinese GF 1 (8 m) data to be tested with the GF 1 data in Xinjiang. For the cross-sensor test, the same model training in Guangdong with GF 1 was tested in Landsat 8 OLI images in Xinjiang. The proposed method was compared with the neighbor-embedding (NE) method, the sparse representation method (SCSR), and the SRGAN. The peak signal-to-noise ratio (PSNR) and structural similarity (SSIM) were chosen for the quantitive assessment. The results showed that the ISRGAN is superior to the NE (PSNR: 30.999, SSIM: 0.944) and SCSR (PSNR: 29.423, SSIM: 0.876) methods, and the SRGAN (PSNR: 31.378, SSIM: 0.952), with the PSNR = 35.816 and SSIM = 0.988 in the cross-location test. A similar result was seen in the cross-sensor test. The ISRGAN had the best result (PSNR: 38.092, SSIM: 0.988) compared to the NE (PSNR: 35.000, SSIM: 0.982) and SCSR (PSNR: 33.639, SSIM: 0.965) methods, and the SRGAN (PSNR: 32.820, SSIM: 0.949). Meanwhile, we also tested the accuracy improvement for land cover classification before and after super-resolution by the ISRGAN. The results show that the accuracy of land cover classification after super-resolution was significantly improved, in particular, the impervious surface class (the road and buildings with high-resolution texture) improved by 15%.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Design and implementation of artificial neuromorphic systems able to provide brain akin computation and/or bio-compatible interfacing ability are crucial for understanding the human brain’s complex functionality and unleashing brain-inspired computation’s full potential. To this end, the realization of energy-efficient, low-area, and bio-compatible artificial synapses, which sustain the signal transmission between neurons, is of particular interest for any large-scale neuromorphic system. Graphene is a prime candidate material with excellent electronic properties, atomic dimensions, and low-energy envelope perspectives, which was already proven effective for logic gates implementations. Furthermore, distinct from any other materials used in current artificial synapse implementations, graphene is biocompatible, which offers perspectives for neural interfaces. In view of this, we investigate the feasibility of graphene-based synapses to emulate various synaptic plasticity behaviors and look into their potential area and energy consumption for large-scale implementations. In this article, we propose a generic graphene-based synapse structure, which can emulate the fundamental synaptic functionalities, i.e., Spike-Timing-Dependent Plasticity (STDP) and Long-Term Plasticity . Additionally, the graphene synapse is programable by means of back-gate bias voltage and can exhibit both excitatory or inhibitory behavior. We investigate its capability to obtain different potentiation/depression time scale for STDP with identical synaptic weight change amplitude when the input spike duration varies. Our simulation results, for various synaptic plasticities, indicate that a maximum 30% synaptic weight change and potentiation/depression time scale range from [-1.5 ms, 1.1 ms to [-32.2 ms, 24.1 ms] are achievable. We further explore the effect of our proposal at the Spiking Neural Network (SNN) level by performing NEST-based simulations of a small SNN implemented with 5 leaky-integrate-and-fire neurons connected via graphene-based synapses. Our experiments indicate that the number of SNN firing events exhibits a strong connection with the synaptic plasticity type, and monotonously varies with respect to the input spike frequency. Moreover, for graphene-based Hebbian STDP and spike duration of 20ms we obtain an SNN behavior relatively similar with the one provided by the same SNN with biological STDP. The proposed graphene-based synapse requires a small area (max. 30 nm 2 ), operates at low voltage (200 mV), and can emulate various plasticity types, which makes it an outstanding candidate for implementing large-scale brain-inspired computation systems.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Treatment of Z-PPh2CH2C(But)=NNH2 with 4-methylphenylthiomethyl methyl ketone gave the thioether azine phosphine Z,E-PPh2CH2C(But)=N-N=C(Me)CH2S(C6H4Me-4) 1, which with H2O2 gave the corresponding phosphine oxide 2. Treatment of 1 with [Mo(CO)3(η6-cht)] or [W(CO)3(NCEt)3] gave the yellow tricarbonyl complexes fac-[M(CO)3{PPh2CH2C(But)=N-N=C(Me)CH2S(C6H4Me-4)}] 3a (Mo) or 3b (W), respectively. Treatment of 1 with [Mo(CO)4(nbd)] gave the pale yellow tetracarbonylmolbdenum(0) complex [Mo(CO)4{PPh2CH2C(But)=N-N=C(Me)CH2S(C6H4Me-4)}] 4, in which the ligand 1 is bidentate through P and N. Oxidation of either 3a or 4 with 1 equivalent of bromine gave the orange neutral seven-coordinate dicarbonylmolybdenum(II) complex [MoBr2(CO)2{PPh2CH2C(But)=N-N=C(Me)CH2S(C6H4Me-4)}] 5, whereas the tungsten complex 3b with 1 equivalent of bromine gave the seven-coordinate tricarbonyltungsten(II) cation [WBr(CO)3{PPh2CH2C(But)=N-N=C(Me)CH2S(C6H4Me-4)}]+ isolated as the PF6 salt 6. Treatment of 1 with [PtCl2(NCMe)2]gave the yellow dichloroplatinum(II) complex [PtCl2{PPh2CH2C(But)=N-N=C(Me)CH2S(C6H4Me-4)}] 7, in which 1 is bidentate through P and N. When 7 was treated with NH4PF6 in methanol it gave the terdentate salt [PtCl{PPh2CH2C(But)=N-N=C(Me)CH2S(C6H4Me-4)}]PF68a. Deprotonation of 7 with NEt3-NaOH gave the orange neutral chloroplatinum(II) complex [PtCl{PPh2-CH2C(But)N-NC(Me)=CHS(C6H4Me-4)}] 9, containing a terdentate ene-hydrazone phosphine ligand. This neutral complex 9 was reprotonated using HBF4 to give the BF4 salt 8b. Treatment of the phosphine 1 with [PtMe2(cod)] gave the white dimethylplatinum(II) complex [PtMe2{PPh2CH2C(But)=N-N=C(Me)CH2S(C6H4Me-4)}] 10, containing the bidentate azine ligand. Treatment of 10 with MeI gave the white platinum(IV) iodide salt fac-[PtMe3{PPh2CH2C(But)=N-N=C(Me)CH2S(C6H4Me-4)}]I 11a in which the azine is terdentate. When 11a was treated with NH4PF6 in MeOH the PF6 salt 11b was obtained. Treatment of 10 with picric acid gave the yellow methylplatinum(II) picrate salt [PtMe{PPh2CH2C(But)=N-N=C(Me)CH2S(C6H4Me-4)}][OC6H2(NO2)3-2,4,6] 12 and methane. Infrared, 31P–[1H], 1H, and some 13C–[1H] NMRdata are given. Keywords: azine phosphine, thioether, metal-carbonyls, platinum.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Abstract Due to its versatility for high density, heterogeneous integration, Wafer Level Fan Out (WLFO) packaging has recently seen a tremendous growth in a broad array of applications, from telecommunications and automotive, to optical and environmental sensing, while addressing the challenges of the next big wave of the Internet of Things (IoT). In this context, WLFO is continuously being challenged to include new families of MEMS/NEMS/MOEMS sensors, low thermal budget devices and biochips with microfluidics for biomedical applications. Recent developments in WLFO technology by NANIUM [1] demonstrated the implementation of a keep-out-zone (KOZ) mechanism intended to 1st) protect sensitive sensor areas during the backend processing of WLFO wafers and 2nd) create open zones on the Re-Distribution Layers (RDL). This way, the KOZ mechanism provides a physical, direct path from the embedded device to the environment. This is a necessary feature for environment sensing (e.g., pressure) or to create optical paths free of dielectric and protected from the harsh chemistry steps of the WLFO process. This paper describes new developments on KOZ, implemented with SU-8 photoresist as a WLFO dielectric, whose application is a novelty in the WLFO platform. The use of SU-8 and the KOZ with it, addresses some gaps of the current WLFO technology towards the integration of chips with bio-sensitive areas and sensors with low thermal budget. Due to its well-known bio-compatibility and inert behavior, SU-8 can be used as a neutral dielectric to be in direct contact to target fluids (e.g., sera, blood). Also, due to its low curing temperature, SU-8 allows a very low temperature WLFO process and thus the embedding of temperature-limited devices that have been outside the WLFO realm, for example, magneto-resistive or magnetic-spin sensor chips, which degrades its performance above 160°C. More interestingly, SU-8 exhibits a particular non-conformal behavior, which creates very smooth surfaces even over the mildly rough mold compound area of a fan-out package. Adding to this, SU-8 is readily available in the market in a wide range of thicknesses, spanning from 0.5 μm to &gt;100 μm, and further allowing multiple spin coatings to build thick layers. Thus, SU-8 can provide smooth and deep enough channels for microfluidic flow over the chip sensing areas and, at the same time, provide the necessary layer thickness discrimination for the KOZ mechanism. Combining these features, the SU-8 layers in WLFO can play the triple role of 1) RDL dielectric insulation, 2) KOZ mechanism and 3) embedded microfluidic channels as part of the RDL. In summary, besides the unprecedented use of SU-8 in WLFO packaging, KOZ implementation on SU-8 provides a true, attainable bridge between WLFO and integrated microfluidic applications, for biosensing and biomedical applications in general. Outlooking the potentialities of such a merge, a Fan-Out package can embed several chips interconnected by RDL lines, as it currently allows, and also connected by microfluidic channel for multi-point, multi-function biosensing, constituting a true Lab-on-Package, cost-effective solution. Instead of building all sensing areas and microfluidic channels over a large silicon (Si) chip, this solution builds the feed-in, feed-out areas of the microfluidic channel over the inexpensive fan-out area, minimizing the sensing chip area, with the consequent front-end cost reduction.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

The translation of the “Linguoterritorial Dictionary of Latgale” into the Latgalian language (one of 4 languages of the dictionary) is the biggest large-volume comprehensive set of existent Latgalian texts in the Latgalian orthography of 2007. The subject matter of the entries of this dictionary covers almost all spheres of life and even reveals style nuances within the framework of popular science texts, so the texts may sometimes seem to be radical and unprecedentedly innovative. The translators would be happy to keep to the current orthographic norms and practice-fixed options of Latgalian, however, answers to the numerous problematic issues (the display of Latvian personal names, palatalization/ softening of foreign words, suffix endings of less- used nouns, etc.) cannot be found in the sources known to specialists working with Latgalian literary/ written language, and sometimes may be resolved through individual consultations with experts of the Latgalian language This shows the need to resume / renew the work of the subcomission of Latgalian written language, as well as the necessity of a modern Latgalian spelling dictionary. Regarding lexical issues, the translators are aware that Latgalian texts may always be "pulled in one specific direction”, and then the right arguments are found: 1) in the direction of Lithuanian culture layer (understanding of the basis of the Balts parent language), in the direction of Slavic culture layer (recognition of the natural historical reality when Polish or Russian dominated in Latgale, retaining their influence), in the direction of Latvian (definition of the national identity), 2) it is possible to “fall into the ditch” of neologisms or archaisms, 3) it is also possible to overestimate the role of the recipient (understanding or non-acceptance). The observation of the “golden midway” seemed to be the most difficult challenge. During the search for more accurate equivalents, the synonym group was always determined, as well as compliance of the dominated seme with any context was weighted. The choice of equivalents is made easy not by the richness of the synonym group, but by the oppositional character of their meanings (Rozenbergs 1995: 153). This paper describes the realized principles and most typical cases during the translator work. First, individual style of translators is preserved, therefore in the use of neutral lexemes in the “Linguoterritorial Dictionary of Latgale” synonymy is allowed, which is non-determined by other criteria, such as: saulis grīžki / saulis meitovys ‘solstice’, ci/voi ‘or’, nedeļa/savaite ‘week’, gastēt/cīmuotīs ‘to be visiting’. Second, in other cases, when a number of Latgalian equivalents correspond to only one Latvian equivalent, the qualitative difference of synonyms was searched for (on the functional level and seme level). For example: 1) there are three Latgalian equivalents to Latvian "tulkot” ‘translate, interpret’, one of which “tulkuot” (respectively tulkuojums, tulkuotuojs ‘translation, translator’) is used to denote professional translation, however “puorlikt” (calque of germanism “übersetzen”) is used, when speaking about the translations of sacred/ spiritual texts of the 18th century. In its turn, “atvērst” (compare with Lithuanian “versti”) is not used due to the misleading hom*onymy with Latvian “vērst” ‘to turn, direct, point); 2) Latvian word "saimniecība” ‘economy, industry, farm, housekeeping’ in Latgalian texts corresponds to saimnīceiba "zyvu saimnīceiba” ‘fish industry’ as well as to saimisteiba "zemnīku saimesteiba” (farm, resp. economic entity); 3) Latvian "deja” ‘dance’ - Latgalian "dzyga" as an ethnographic dance, "daņcs” as any dance, "deja” in usual compound names (e.g. Dzīšmu i deju svātki) 4) Latvian "virsnieks” ‘military officer’ – Latgalian "oficers” and not "viersnīks” in order to avoid the misunderstood hom*onymy with the Latgalian lexeme “vierseiba / vierseibnīks” ‘management, authorities / boss’. Third, etymological specificity of Latgalian equivalent may limit its use, and in other contexts another lexeme has to be used, e. g. the denotative seme of the Latvian lexeme "zupa” is - ‘liquid food, meal’, but Latgalian “virīņs” – 'cooked food/meal’, so in the word combination "soltuo zupa” ‘cold soup’ another lexeme "zupa” is necessary. It is usual, that “behavior” against occasionalisms is favorable in artistic texts, but they are irrelevant/ impertinent in scientific and popular style. However, translators took the liberty to use not only widely accepted neologisms (e. g. “škārsteiklys” ‘internet’), but also to offer their own occasional neologisms (dreizynuot, mudrynuot ‘to accelerate, to speed on’, tuoļuokuot ‘to continue’, parūceibys ‘advantage’, sasprīdums ‘decision’, pasavierieji ‘spectators, onlookers’, ītums ‘course of life; annual, day, week set’, apdzeive ‘ancient settlement’, breinuojums ‘astonishment, wonder’, pasūlejumu palete ‘a set of offers’, zeimyns ‘brand, trade mark’, makšariešona ‘fishing, angling’, daīmameiba ‘accessibility, availability’, seneiba ‘ancient times’, augzeme ‘top soil’, perekļuot ‘to nest’, svešlītyns ‘foreign body’). However, the following principle, that is firmly adhered, is that new word / formation/derivation is recognizable by the root and experimental by affixes.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

AbstractQuantized or low-bit neural networks are attractive due to their inference efficiency. However, training deep neural networks with quantized activations involves minimizing a discontinuous and piecewise constant loss function. Such a loss function has zero gradient almost everywhere (a.e.), which makes the conventional gradient-based algorithms inapplicable. To this end, we study a novel class of biased first-order oracle, termed coarse gradient, for overcoming the vanished gradient issue. A coarse gradient is generated by replacing the a.e. zero derivative of quantized (i.e., staircase) ReLU activation composited in the chain rule with some heuristic proxy derivative called straight-through estimator (STE). Although having been widely used in training quantized networks empirically, fundamental questions like when and why the ad hoc STE trick works, still lack theoretical understanding. In this paper, we propose a class of STEs with certain monotonicity and consider their applications to the training of a two-linear-layer network with quantized activation functions for nonlinear multi-category classification. We establish performance guarantees for the proposed STEs by showing that the corresponding coarse gradient methods converge to the global minimum, which leads to a perfect classification. Lastly, we present experimental results on synthetic data as well as MNIST dataset to verify our theoretical findings and demonstrate the effectiveness of our proposed STEs.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Stress is indeed a life aspect that influences everyone, even though athletes seem to suffer from it one step ahead of others because of the extent they are expected to balance between coursework, workouts, and competitions, along with everyday life and family stress. Therefore, an efficient psychological health analysis for sportspersons is crucial in sports training. This paper introduces a Fuzzy-assisted Neural Network model for Psychological Health Analysis (FNN-PHA) to assess mental stress by monitoring the Electro Cardio Gram signal (ECG), Electroencephalogram (EEG), and Pulse rate. This paper integrates the fuzzy assisted Petri nets, fuzzy assisted k-complex detector, and fuzzy assisted transient time analyzer to ensure the psychological health analysis neural network model’s adaptive performance. The strength of the proposed fuzzy model demonstrates interpretability against the accuracy of different criteria. The simulation analysis shows that the FNN-PHA model enhances the prediction ratio of 98.7%, emotional stability of 96.7%, personal growth of 95.7%, physical fitness level of 97.8%, and depression ratio of 12.5% when compared to other existing models.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Sparse time series models have shown promise in estimating contemporaneous and ongoing brain connectivity. This paper was motivated by a neuroscience experiment using EEG signals as the outcome of our established interventional protocol, a new method in neurorehabilitation toward developing a treatment for visual verticality disorder in post-stroke patients. To analyze the [complex outcome measure (EEG)] that reflects neural-network functioning and processing in more specific ways regarding traditional analyses, we make a comparison among sparse time series models (classic VAR, GLASSO, TSCGM, and TSCGM-modified with non-linear and iterative optimizations) combined with a graphical approach, such as a Dynamic Chain Graph Model (DCGM). These dynamic graphical models were useful in assessing the role of estimating the brain network structure and describing its causal relationship. In addition, the class of DCGM was able to visualize and compare experimental conditions and brain frequency domains [using finite impulse response (FIR) filter]. Moreover, using multilayer networks, the results corroborate with the susceptibility of sparse dynamic models, bypassing the false positives problem in estimation algorithms. We conclude that applying sparse dynamic models to EEG data may be useful for describing intervention-relocated changes in brain connectivity.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Abstract Biological invasions are a leading driver of biodiversity loss and population declines worldwide. While much research has focused on understanding the effects of long-distance (e.g., cross-continental) invasion, the potential impacts of species that invade close to or within their native ranges are relatively understudied. We investigated the effects of the near-range introduction of a non-native plant, New Mexico locust (Robinia neomexicana), on riparian plant and bird communities in northwestern Colorado, USA. By surveying plant and bird communities and examining nest success and productivity in riparian forest with and without locust, we evaluated the following ecological responses to invasion: (1) tree and shrub richness and density; (2) bird species richness, occupancy, and abundance; and (3) avian reproductive success. Our results demonstrate biotic hom*ogenization of the plant community with increasing intensity of locust invasion, yet we found little evidence for negative effects on avian habitat use or reproductive success. Instead, locust invasion showed a positive effect on nest productivity, with significantly higher brood sizes and numbers of young fledged for nests in invaded habitats compared to those where locust was absent. Because climate change is already leading to shifts in species distribution patterns, we suggest that understanding the ecological consequences of plant invasions that occur within or near historic ranges will advance the science and practice of invasive species biology in a changing world. Our findings of mostly neutral to positive effects of locust suggest that near-range plant invasions may not always negatively impact community structure.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Abstract Many wildlife species, like Northern Bobwhite (Colinus virginianus), are reliant on periodic environmental disturbance to maintain heterogeneity in vegetation patterns. The Northern Bobwhite is a species of conservation concern requiring different vegetation types for nesting and brood-rearing stages, as well as for protection from predators and extreme weather. In northeastern Colorado, there are few management options to increase disturbance, other than domestic livestock grazing, to manage Northern Bobwhite habitat. As high-intensity short-duration grazing has shown promise as a mode of disturbance to manage Northern Bobwhite habitat in other regions, I used a randomized block design to test the effect of spring high-intensity short-duration grazing on Northern Bobwhites and their habitat in northeastern Colorado from 2016 to 2019. Specifically, I monitored Northern Bobwhite nest and brood survival and habitat selection in relation to grazing treatments over 3 years. I found that grazing had no effect on nest or brood survival or brood habitat selection, but Northern Bobwhites selected against grazed plots for nesting. Nest survival was negatively influenced by percent litter around the nest, and Northern Bobwhites selected nest sites with more grass cover and less bare ground. Broods selected habitat with less bare ground and more woody vegetation. Grazing affected vegetation immediately after grazing, but these effects weakened or disappeared by the end of the growing season. One exception to this overall pattern was forbs, which tended to be more abundant on grazed plots throughout the growing season. Overall, I found neutral effects of grazing on Northern Bobwhite nest and brood survival and habitat selection and neutral to positive benefits to the vegetation. Spring high-intensity short-duration grazing does not appear to be an effective tool to manage Northern Bobwhite nest or brood habitat in northeastern Colorado.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Abstract Background Convolutional neural network (CNN) has achieved state-of-art performance in many electroencephalogram (EEG) related studies. However, the application of CNN in prediction of risk factors for sudden unexpected death in epilepsy (SUDEP) remains as an underexplored area. It is unclear how the trade-off between computation cost and prediction power varies with changes in the complexity and depth of neural nets. Methods The purpose of this study was to explore the feasibility of using a lightweight CNN to predict SUDEP. A total of 170 patients were included in the analyses. The CNN model was trained using clips with 10-s signals sampled from the original EEG. We implemented Hann function to smooth the raw EEG signal and evaluated its effect by choosing different strength of denoising filter. In addition, we experimented two variations of the proposed model: (1) converting EEG input into an “RGB” format to address EEG channels underlying spatial correlation and (2) incorporating residual network (ResNet) into the bottle neck position of the proposed structure of baseline CNN. Results The proposed baseline CNN model with lightweight architecture achieved the best AUC of 0.72. A moderate noise removal step facilitated the training of CNN model by ensuring stability of performance. We did not observe further improvement in model’s accuracy by increasing the strength of denoising filter. Conclusion Post-seizure slow activity in EEG is a potential marker for SUDEP, our proposed lightweight architecture of CNN achieved satisfying trade-off between efficiently identifying such biomarker and computational cost. It also has a flexible interface to be integrated with different variations in structure leaving room for further improvement of the model’s performance in automating EEG signal annotation.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Brain-specific link protein Bral2 represents a substantial component of perineuronal nets (PNNs) enwrapping neurons in the central nervous system. To elucidate the role of Bral2 in auditory signal processing, the hearing function in knockout Bral2-/- (KO) mice was investigated using behavioral and electrophysiological methods and compared with wild type Bral2+/+ (WT) mice. The amplitudes of the acoustic startle reflex (ASR) and the efficiency of the prepulse inhibition of ASR (PPI of ASR), produced by prepulse noise stimulus or gap in continuous noise, was similar in 2-week-old WT and KO mice. Over the 2-month postnatal period the increase of ASR amplitudes was significantly more evident in WT mice than in KO mice. The efficiency of the PPI of ASR significantly increased in the 2-month postnatal period in WT mice, whereas in KO mice the PPI efficiency did not change. Hearing thresholds in 2-month-old WT mice, based on the auditory brainstem response (ABR) recordings, were significantly lower at high frequencies than in KO mice. However, amplitudes and peak latencies of individual waves of click-evoked ABR did not differ significantly between WT and KO mice. Temporal resolution and neural adaptation were significantly better in 2-month-old WT mice than in age-matched KO mice. These results support a hypothesis that the absence of perineuronal net formation at the end of the developmental period in the KO mice results in higher hearing threshold at high frequencies and weaker temporal resolution ability in adult KO animals compared to WT mice.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Improving the accuracy and robustness of deep neural nets (DNNs) and adapting them to small training data are primary tasks in deep learning (DL) research. In this paper, we replace the output activation function of DNNs, typically the data-agnostic softmax function, with a graph Laplacian-based high-dimensional interpolating function which, in the continuum limit, converges to the solution of a Laplace–Beltrami equation on a high-dimensional manifold. Furthermore, we propose end-to-end training and testing algorithms for this new architecture. The proposed DNN with graph interpolating activation integrates the advantages of both deep learning and manifold learning. Compared to the conventional DNNs with the softmax function as output activation, the new framework demonstrates the following major advantages: First, it is better applicable to data-efficient learning in which we train high capacity DNNs without using a large number of training data. Second, it remarkably improves both natural accuracy on the clean images and robust accuracy on the adversarial images crafted by both white-box and black-box adversarial attacks. Third, it is a natural choice for semi-supervised learning. This paper is a significant extension of our earlier work published in NeurIPS, 2018. For reproducibility, the code is available at https://github.com/BaoWangMath/DNN-DataDependentActivation.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

AbstractNeural modelling tools are increasingly employed to describe, explain, and predict the human brain’s behavior. Among them, spiking neural networks (SNNs) make possible the simulation of neural activity at the level of single neurons, but their use is often threatened by the resources needed in terms of processing capabilities and memory. Emerging applications where a low energy burden is required (e.g. implanted neuroprostheses) motivate the exploration of new strategies able to capture the relevant principles of neuronal dynamics in reduced and efficient models. The recent Leaky Integrate-and-Fire with Latency (LIFL) spiking neuron model shows some realistic neuronal features and efficiency at the same time, a combination of characteristics that may result appealing for SNN-based brain modelling. In this paper we introduce FNS, the first LIFL-based SNN framework, which combines spiking/synaptic modelling with the event-driven approach, allowing us to define heterogeneous neuron groups and multi-scale connectivity, with delayed connections and plastic synapses. FNS allows multi-thread, precise simulations, integrating a novel parallelization strategy and a mechanism of periodic dumping. We evaluate the performance of FNS in terms of simulation time and used memory, and compare it with those obtained with neuronal models having a similar neurocomputational profile, implemented in NEST, showing that FNS performs better in both scenarios. FNS can be advantageously used to explore the interaction within and between populations of spiking neurons, even for long time-scales and with a limited hardware configuration.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Abstract Background Cardiovascular magnetic resonance (CMR) cine displacement encoding with stimulated echoes (DENSE) measures heart motion by encoding myocardial displacement into the signal phase, facilitating high accuracy and reproducibility of global and segmental myocardial strain and providing benefits in clinical performance. While conventional methods for strain analysis of DENSE images are faster than those for myocardial tagging, they still require manual user assistance. The present study developed and evaluated deep learning methods for fully-automatic DENSE strain analysis. Methods Convolutional neural networks (CNNs) were developed and trained to (a) identify the left-ventricular (LV) epicardial and endocardial borders, (b) identify the anterior right-ventricular (RV)-LV insertion point, and (c) perform phase unwrapping. Subsequent conventional automatic steps were employed to compute strain. The networks were trained using 12,415 short-axis DENSE images from 45 healthy subjects and 19 heart disease patients and were tested using 10,510 images from 25 healthy subjects and 19 patients. Each individual CNN was evaluated, and the end-to-end fully-automatic deep learning pipeline was compared to conventional user-assisted DENSE analysis using linear correlation and Bland Altman analysis of circumferential strain. Results LV myocardial segmentation U-Nets achieved a DICE similarity coefficient of 0.87 ± 0.04, a Hausdorff distance of 2.7 ± 1.0 pixels, and a mean surface distance of 0.41 ± 0.29 pixels in comparison with manual LV myocardial segmentation by an expert. The anterior RV-LV insertion point was detected within 1.38 ± 0.9 pixels compared to manually annotated data. The phase-unwrapping U-Net had similar or lower mean squared error vs. ground-truth data compared to the conventional path-following method for images with typical signal-to-noise ratio (SNR) or low SNR (p < 0.05), respectively. Bland–Altman analyses showed biases of 0.00 ± 0.03 and limits of agreement of − 0.04 to 0.05 or better for deep learning-based fully-automatic global and segmental end-systolic circumferential strain vs. conventional user-assisted methods. Conclusions Deep learning enables fully-automatic global and segmental circumferential strain analysis of DENSE CMR providing excellent agreement with conventional user-assisted methods. Deep learning-based automatic strain analysis may facilitate greater clinical use of DENSE for the quantification of global and segmental strain in patients with cardiac disease.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Every year billions of birds migrate between their breeding and wintering areas. As birds are an important indicator in nature conservation, migratory bird studies have been conducted for many decades, mostly by bird-ringing programmes and direct observation. However, most birds migrate at night, and therefore much information about their migration is lost. Novel methods have been developed to overcome this difficulty; including thermal imaging, radar, geolocation techniques, and acoustic recognition of bird calls. Many bird species are detected by their characteristic sounds. This method of identification occurs more often than by direct observation, and therefore recordings are widely used in avian research. The commonly used approach is to record the birds automatically, and to manually study the bird sounds in the recordings afterwards (Furnas and Callas 2015, Frommolt 2017). However, the tagging of recordings is a tedious and time-consuming process that requires expert knowledge, and, as a result, automatic detection of flight calls is in high demand. The first experiments towards this used energy thresholds or template matching (Bardeli et al. 2010, Towsey et al. 2012), and later on the machine and deep learning methods were applied (Stowell et al. 2018). Nevertheless, not many studies have focused specifically on night flight calls (Salamon et al. 2016, Lostanlen et al. 2018). Such acoustic monitoring could complement daytime avian research, especially when the field recording station is close to the bird-ringing station, as it is in our project. In this study, we present the initial results of a long-term bird audio monitoring project using automatic methods for bird detection. Passive acoustic recorders were deployed at a narrow spit between a lake and the Baltic sea in Dąbkowice, West Pomeranian Voivodeship, Poland . We recorded bird calls nightly from sunset till sunrise during the passerine autumn migration for 3 seasons. As a result, we collected over 3000 hours of recordings each season. We annotated a subset of over 50 hours, from different nights with various weather conditions. As avian flight calls are sporadic and short, we created a balanced set for training - recordings were divided into partially overlapping 500-ms clips, and we retained all clips containing calls and created about the same number of clips without bird sounds. Different signal representations were then examined (e.g. mel-spectrograms and multitaper). Afterwards, various convolutional neural networks were checked and their performance was compared using the area under the receiver operating characteristic curve (AUC) measure. Moreover, an initial attempt was made to take advantage of the transfer learning from image classification models. The results obtained by the deep learning methods are promising (AUC exceeding 80%), but higher bird detection accuracy is still needed. For a chosen bird species – Song thrush (Turdus philomelos) – we observed a correlation between calls recorded at night and birds caught in the nets during the day. This fact, as well as the promising results from the detection of calls from long-term recordings, indicate that acoustic monitoring of nocturnal birds has great potential and could be used to supplement the research of the phenomenon of seasonal bird migration.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

From the sensuous scenes of culinary delectation and preparatory foreplay in Eat Drink Man Woman to the current crop of texts infused with metaphors of consumption as assimilation, writers and filmmakers have signified diasporic Asian bodies by merging cultural and racial markers. This is an introduction to the issues involved in representing the Asian body in diaspora and the politically fraught issues for racial minority populations in majority 'white' nations. Examples in this piece skim from Japanese-Canadian literature and metaphors of ingestion to racial minority identity politics in the United States. In Chorus of Mushrooms, a novel by Japanese-Canadian Hiromi Goto, one of the foci for the Tonkatsus' cultural change-over from the Japanese to the Canadian side of the hyphen is a determined alteration in eating habits. 'Western' food is the only type provided and the grandmother, Naoe, comments that her daughter has "converted from rice and daikon to weiners and beans" (13). In many ways, Keiko tries to force her family to eat their way into a new Canadian skin. Ostensibly, through the absorption of Western-style Canadian food, the Tonkatsus would achieve the goal of becoming one of 'them'. Using metaphors of cultural miscegenation, Keiko's daughter Muriel, as well as Obasan's Naomi and Stephen Nakane, could be described as 'banana'-yellow on the outside, white on the inside (Brydon 104). In the Asian-Australian literature and politics Webpages, The Banana Schtick, this term is reclaimed deliberately and defines specific issues for Asian-Australian writers and academic work which bypass the usual 'area studies' presumptions. This customarily derogatory metaphor is used by those within and without racial minority communities, across most class groups, barring the embedded invisibility of whiteness. Similar metaphors which denote the clashing (or possible melding) of races or cultures include the use of the term 'oreos' for African-Americans who take on what are deemed white, middle-class characteristics, or who do not act 'like a negro should' (Dyson 222). The term 'apples' has referred to Native Americans and 'coconuts' to individuals of South-East Asian or West Indian origin. The plethora of food metaphors link these models of hybrid identities with notions of cultural consumption and ingestion. Yau Ching, while examining Ang Lee's film Eat Drink Man Woman, observes: "those close-ups of the kungfu of chopping and stir-frying constitute a postmodern version of the West's Chinoiserie. I felt like I was stripteasing, selling something that I didn't have" (31). Yau's positioning as a part of the 'striptease' offered by the highly detailed shots of food preparation evokes discomfort. The scenes are meant to be evocatively 'Chinese' and operated as cultural shorthand: "food thus serves as an index of the imaginary 'heritage' passed on, the racial symbolism, the alimentary sign of Chineseness" (31). This obsession with the minutiae of process and material becomes a part of what Shu-Mei Shih calls a "p*rno-culinary genre" (1), another way for 'chinese-ness' to be observed, assessed, and ultimately consumed. A site that reacts explicitly to this commodification of Asian-ness, and particularly Asian women, is Mimi Nguyen's Exoticise This! It provides an excellent listing of Asian feminist and Third World women's resources, zines, and creative work. Notably, it is one of the few critically engaged, non-p*rnographic sites that will appear during a search for "Asian women" using Web search engines or directories. As pointers of racial/cultural doubling, the food markers mentioned above assume a constant social or mental bearing as 'towards white': white as the centre, as the most desired once again. The community or familial censure that this 'doubling' encounters could be read as a start in eroding the assumed attractive power of being 'white,' except that the judgments are based on essentialist ideas of what white/non-white means (in behaviour, talk, etc.) and their incompatability. This mode of reasoning maintains that a subject must be one side of the hyphenated identity or the other. For the most part, the terms used to describe the 'whitened' Others are analogous with various versions of raw produce and organic perishables. Conversely, "whiteness [is] often signified ... by commodities and brands: Wonder Bread, Kleenex, Heinz 57. In this identification, whiteness [comes] to be seen as spoiled by capitalism, and as being linked with capitalism in a way other cultures are not" (Frankenberg 199). The condition of whiteness as embodying capitalism inflect various constructions of western 'modernity', as well as the assumption that this kind of modernity is the logical state to which all nations and communities aspire. The growing area of 'whiteness' studies, and publications like Race Traitor, challenge this notion of a neutral flesh colour. The tokenistic acceptance of racial minority communities promotes divisiveness by allowing only a narrow range of representation for 'coloured' peoples. This perpetuates the masking of white privilege in that it remains the always-present and never-questioned. David Palumbo-Liu, an Asian-American race theorist, presents the symbiotic relationship between Korean-Americans and Anglo-Americans in the 1990s as an example of this creation of self-destructive alienation. He uses the incidents surrounding the 1992 Los Angeles riots, post-Rodney King trial, to emphasise how "Korean-Americans were represented as the frontline forces of the white bourgeoisie" (371), protecting their goods and property, being part of the capitalist programme which enabled them to become asset-rich 'Americans'. In most images and reports, the presence of white Americans (in downtown south-central Los Angeles) was elided while that of black Americans was amplified. Ruth Frankenberg suggests that "racist discourse ... frequently accords hypervisibility to African Americans and a relative invisibility to Asian Americans and Native Americans" (12). Palumbo-Liu states more specifically: the locating, real and figurative, of Asians in between the dominant and minor is made less tenuous and even rationalized by a particular element which situates Asians within the dominant ideology, and frees them of the burden of their ethnicity and race while retaining (for obvious ideological purposes) the signifier of racial difference: the notion of self-affirmative action. (371) The basic desire to be accepted/assimilated into majority white societies has meant that, in some instances, Asian citizens are complicit with the promulgation of certain stereotypes of themselves. Bypassing the expectations and approvals of white society altogether are increasing numbers of Asian-Canadian and Asian-American texts, whether in the form of novels, magazines (such as Giant Robot), or films, which do not assume a white audience but, instead, one that recognises the stereotypes and amalgamations of being part of diasporic Asian communities in North America and elsewhere. References Brydon, Diana. "Discovering 'Ethnicity': Joy Kogawa's Obasan and Mena Abdullah's Time of the Peaco*ck." Australian/Canadian Literatures in English: Comparative Perspectives. Ed. Russell McDougall and Gillian Whitlock. Melbourne: Methuen, 1987. 94-110. Ching, Yau. "Can I Have MSG, an Egg Roll To Suck on and Asian American Media on the Side?" Fuse 20.1 (1997): 27-34. Dyson, Michael Eric. "Essentialism and the Complexities of Racial Identity." Multiculturalism: A Reader. Ed. David Theo Goldberg. Cambridge, Massachusetts: Basil Blackwell, 1994. 218-29. Frankenberg, Ruth. White Women, Race Matters: The Social Construction of Whiteness. London: Routledge, 1993. Goto, Hiromi. Chorus of Mushrooms. Edmonton: NeWest P, 1994. Kogawa, Joy. Obasan. Markham: Penguin, 1981. Lee, Ang, dir. Eat Drink Man Woman. Samuel Goldwyn, 1994. Palumbo-Liu, David. "Los Angeles, Asians, and Perverse Ventriloquisms: On the Function of Asian America in the Recent American Imaginary." Public Culture 6 (1994): 365-81. Shih, Shu-mei. "Globalization, Minoritization, and Ang Lee's Films." Paper given at the 15th Annual Meeting of the Association for Asian American Studies, 23-28 June 1998. Citation reference for this article MLA style: Tseen Khoo. "Fetishising Flesh: Asian-Australian and Asian-Canadian Representation, p*rno-Culinary Genres, and the Racially Marked Body." M/C: A Journal of Media and Culture 2.3 (1999). [your date of access] <http://www.uq.edu.au/mc/9905/fetish.php>. Chicago style: Tseen Khoo, "Fetishising Flesh: Asian-Australian and Asian-Canadian Representation, p*rno-Culinary Genres, and the Racially Marked Body," M/C: A Journal of Media and Culture 2, no. 3 (1999), <http://www.uq.edu.au/mc/9905/fetish.php> ([your date of access]). APA style: Tseen Khoo. (1999) Fetishising flesh: Asian-Australian and Asian-Canadian representation, p*rno-culinary genres, and the racially marked body. M/C: A Journal of Media and Culture 2(3). <http://www.uq.edu.au/mc/9905/fetish.php> ([your date of access]).

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

Biracial Phenotypes as Ambivalent SignifiersRacialisation is the process of imbuing a body with meaning (Ahmed). Rockquemore et al.’s study on American Black-White middle-class college youth emphasises the importance of phenotypes in interracial children because “physical appearance is the primary cue for racial group membership… and remains the greatest factor in how mixed-race children are classified by others” (114). Wilson’s work on British mixed race 6 to 9-year-olds argues that interracial children classify other children based on how “they locate themselves in the racial structure and how they feel about the various racial groups” (64).However, interracial children often struggle with claiming a racial identity that does not correspond to their obvious physical appearance because society is more likely to classify or perceive the child based on their corporeal manifestations than their self-identified racial master status. In instances where they are unacknowledged or rejected by hom*oethinc groups, interracial persons may be deemed ‘illegitimate’ trespassers within social contexts. In response, interracial bodies may selectively hyper/under-visibilise one racial identity depending on personal connotations of the social group in particular settings (Choudhry 119). Choudhry’s book on the ‘chameleon identities’ of mixed race Black-Asian and White-Asian British young people sets out four ‘interpretative repertoires’ that interracials cognitively adopt: ‘Identity in Transition’ where individuals are still coming to terms with their master status; ‘One Ethnic Identity’ where individuals always privilege one race over the other regardless of context; ‘Interethnic Identity’ where individuals consciously and equally express their dual race and parentage at all times; and ‘Situational/Chameleon-like Identity’ where individuals selectively emphasise one race over the other when it benefits them (112-116). This paper follows on a similar mode of enquiry among Malay-Chinese women in Singapore, whose racial master status is situationally-based.In ethnically heterogeneous and culturally diverse Singapore, an individual’s racial phenotype is convenient shorthand that demarcates Others’ appropriate interactions with and expectations of them. Malbon describes these brief encounters in crowded urban settings as ‘mismeetings’, in which a body’s visual markers allow for a quick assessment and situation of a person’s identity and status. A visibly racialised body thus informs Others on how to negotiate cross-cultural sensitivities and understandings with them in a shared social space. For instance, this visibility may help inform the Other of an appropriate choice of mother tongue to be adopted in conversation with a stranger, or whether to extend non-halal food to a ‘Malay-looking’ – and by extension in most parts of South East Asia, Muslim – person.Unlike previous studies, this paper is not focused on interracial individuals’ felt-race, cognitive development, or the ethnic influence in their upbringing. Instead, it concentrates on their praxis of enacting corporeal markers to enable hom*ophilous interactions with hom*oethnic social groups. Some Malay-Chinese in Singapore have phenotypic features that may not distinctly reflect their ethnic diversity. Hence, they are not readily acknowledged or accepted into some hom*oethnic contexts and are deemed ‘illegitimate’ trespassers. It is important for Others to be able to situate them since this “brings with it privileges or deprivations that affect [their] relationships with others and [their] relation to the world” (Mohanty 109). Every day interactions that affirm or negate one’s biraciality then become micropolitics of legitimating one’s in-group status; in the words of one woman’s reactions to Malay classmates excluding her from conversations about Hari Raya, “I also Melayu ok”. These women thus find themselves under- or hyper-visibilising facets of their biracial corporeality to negotiate legitimacy and sense of belonging. Through in-depth interviews with five young Malay-Chinese women who have had to renegotiate their biraciality in educational institutions each school year, this paper seeks to document the intentional under/hyper-performativity of biraciality through visible bodily signifiers. It argues that these biracial women who are perceived as illegitimate inhabitants of social settings have agentically adopted the ambivalence others display towards them as everyday micro-actions to exercise their autonomy, and strategically reposition themselves favourably.The five women were contacted through snowball sampling among personal networks in polytechnics and universities, which are education settings where students have the liberty to dress themselves, and thus, visibilise facets of their identity. These settings were also places in which the women had to continually under/hyper-visibilise and remark their race and ethnicity in rotating tutorial and lecture groups every semester, therefore (re)constructing their identities through peer interactions (Wilson in Choudhry 112).They were aged between 18 and 23 at the time of the interview. Their state-documented ‘official’ race, self-identified religion, and state-assigned mother tongue are tabulated below. Pseudonyms are employed.Semi-structured open-ended interviews were conducted to draw out personal nuances and interpretations of their bodies as read by Others. Our face-to-face interaction proved to be especially useful when informants physically referenced bodily markers or performed verbal cues to convey their under/hyper-visibility strategies.InformantNadiaAtiqahSaraClaireWahidaSexFemaleFemaleFemaleFemaleFemaleAge2322221822‘Official’ raceMalayMalayMalayMalayChineseReligionChristianMuslimChristianChristianMuslimMother tongueMandarinMalayMandarin MandarinMalayThe Body BeingAmong primary phenotypic cues, the women acknowledged popular perceptions of Chinese as fair-skinned and Malay as darker-skinned. This shorthand has been ingrained into society through rampant media images, especially in annual national-wide initiatives based in educational institutes such as Racial Harmony Day, International Friendship Day, and National Day. These settings utilise a ‘racial colour code’ to represent the CMIO – Chinese, Malay, Indian, Others; the four racial categories all Singaporeans are officially categorised into by the state – multiracialism in Singapore. Media imagery employs four children of different skin tones clad in ethnic dress, holding hands as symbolic of unity across diversity. So normative was this image even at the level of Primary School (7-12 year-olds) that Sara found her legitimacy in Chinese lessons questioned: “I used to be quite tanned in Primary School, quite Malay-looking… during Chinese lessons, the teacher always explained [difficult things] to me in English, as if I don’t understand Mandarin. But I even took higher Chinese...”The non-congruence of Sara’s apparently Malay phenotype and Mandarin mother tongue was perceived by her teacher as incompetence; Sara was an ‘illegitimate’ pupil in Mandarin class. Despite having been qualified enough to enrol in the higher Chinese stream that she says only takes in 10% of her cohort annually, Sara felt her high performance was negated because the visual marker of her Malayness took precedence during interactions with the teacher. Instead, English was adopted as a ‘neutral’ third language for conversing.In other instances, the women reported that while their skin tone generally enabled an audience to assign them a race, closer observations of their facial features such as their eyes signposted their racial hybridity. Claire states: “People always ask if I’m mixed blood because my eyelashes are very long and thick.” Sara experienced similar questioning gazes from strangers: “… maybe it’s my big eyes, and thick eyebrows… and my double eyelids are also very ‘Malay’?"Both Claire and Sara pointed out anatomic subtleties such as the folds of their eyelids, the size of their eyes, the volume of their eyebrows, and the length of their eyelashes as markers of their racial hybridity. There also emerged a consensus based on personal experience that Malays are more likely to have double eyelids, larger eyes, thicker eyebrows, and longer lashes, than to Chinese.Visual emphases on subtle characteristics thus help audiences interpret the biraciality of these women despite the apparent ‘incongruence’ of their skin tone and facial features. However, since racial identity is “influenced by historical, cultural, and contextual factors” (Rockquemore et al. 121), corporeal indications only serve as a primary racial cue. The next segment places these women in the context of secondary cues where the body is actively engaged in performing biraciality.The Body SpeakingThe women code-switched with choice of language, mother tongue, and manner of accents and vocal inflexions to contest initial readings of their racial status. Atiqah shares: “People always think I’m Chinese, until I open my mouth and speak Malay to ‘shock’ them. After that, they just ‘get’ that I am Malay.”Atiqah’s raised vocal inflexions and increasingly enthusiastic body language – she was clenching her fist as if to symbolically convey her victory at this point of the interview – seemed to imply that she relished in the ‘shock value’ of her big racial ‘reveal’. In a setting where her racial status was misidentified, she responded by asserting her racial legitimacy by displaying her competency of the Malay language.However, this has not always had a lasting impact in her interactions. She adds that within familiar social groups where she has long asserted her racial identity, she does not always feel acknowledged. Atiqah then attempts to ‘fit in’ by quietly deciphering her peers’ verbal exchanges: “… sometimes my Chinese friends forget that I’m ‘different’ because I’m so fair. They always talk in Mandarin… and I’ll try to figure out what they are saying from facial expressions and gestures.”Given her fair skin tone, Atiqah finds herself hypervisiblising her Malayness by utilizing the Malay language among Malay friends, even though they often converse in English themselves. In contrast, among Chinese friends where she feels her phenotypic Chinese features are visually dominant, she appears to under-visibilise this same Malayness by not speaking up about her language barrier. Language’s potential to demarcate social boundaries thus becomes a negotiative tool for Malay-Chinese women, while they simultaneously “shift their involvement and alliances” (Choudhry 119) to exercise choice over their identity.In another instance, Wahida is a fair skinned, tudung-clad, officially documented Chinese woman who identifies more as Malay. Her apparent ‘incongruence’ is of particular concern because Wahida had been attending a Madrasah up till the age of 18. Madrasahs are Islamic learning schools which also provide full-time education from Kindergarten to Junior College level, as an alternative to the mainstream track offered by the Ministry of Education in Singapore; a vast majority of Madrasah students self-identify as Malay Muslims. The desire for a sense of belonging encouraged Wahida to undervisibilise her Chineseness when she was younger:There was once my father came to pick me up from Madrasah… I forgot why but he scolded me so loudly in Mandarin! Everybody stared at me… I was so embarrassed! I already tried so hard to hide my Chinese-ness, he ruined it.Although Wahida never spoke Mandarin in school to underplay her Chineseness, ‘passing’ as a Malay necessitated intimate Others to sustain the racial construct. In this instance, her father had broken the ‘Malay’ persona she had deliberately crafted by conversing fluently in Malay in the Madrasah.Butler’s work on ‘gender as performed’ may be applied here in that what she describes as the “sustained set of acts” or a “stylization of the body” (xv) is also necessary to enact a sustained visual signifier of one’s racial identity. Although portrayed as a natural, innate, or unquestioned heritage in CMIO media portrays for Singapore, race is in fact an intentional construction. It is the practice of a certain regime of actions that contributes to the establishment of one’s raced personality. One is not naturally ‘Malay’ or ‘Chinese’ for these identities have to be carefully rehearsed and performed in order to translate one’s hereditary race into an outward expression of visible-race as practiced. As evidenced, this constant performance of Wahida’s racial self is fragile and dialectic, especially when other actors (such as her father) do not respond favourably to her intended presentation of self.Within a supposedly neutral third language such as English, the women also demonstrated their manipulation of accents emphasising or underplaying what they deem to be Malay or Chinese intonations and syllabic stresses. Sara explains:When I’m with my Malay friends, I speak with the mat [shortened from the local colloquial term matrep which loosely stands for the Malay version of a chav or a redneck] accent. Sometimes it’s subconscious… but sometimes it’s on purpose... they all speak like that… when I speak my ‘proper’ English, I feel out of place.Sara then demonstrates that Malay-accented English nasally accentuates the ‘N’ consonant, where words such ‘morning’ and ‘action’ have weighted pronunciations as ‘mornang’ and ‘actione’. Words that begin with a ‘C’ consonant are also developed into a voiced plosive ‘K’ sound, where words such as ‘corner’ and ‘concept’ are articulated as ‘korner’ and ‘koncept’, similar to the Malay language. Claire, who demonstrated similar Malay-accented utterances, supported this.Claire also noted that within Singlish – the colloquial spoken Singaporean English – Malay-accented English also tends towards end-sentence inflexions such as “seh”, “sia”, and “siol” in place of the more Mandarin-accented English that employs the end-sentence inflexions “ba”, and “ma”.Racialising spoken English is a symbolic interaction that interracial bodies may utilise to gain recognition and acceptance into a racial group that has not yet acknowledged their ‘legitimate’ membership. This is a manifestation of Cooley’s ‘looking glass self’ where an individual’s presentation of the body is based how they think other actors’ perceive them. In doing so, biracial bodies are able to exaggerate or obscure some corporeal traits to convey their preferred racial master status.The Body DoingPhysical gestures that constitute a ‘racial code’ are mirrored and socialised among children during their upbringing, since these designate one’s bodily boundaries and limits of exchange. Thus, while unseen by outsiders, insiders of the racial group may appropriate subtle gesticulations to demarcate and legitimate each other’s membership. Atiqah contends: “We [the Malays] always salaam each other when we first meet, it’s like a signal to show that we are ‘the same’ you know, so as long as I ‘act’ Malay, then my [colour] doesn’t really matter.”The salaam is a salutation of Islamic origin, signifying ‘peace to you’. It usually involves taking the back of the hand of a senior and bringing it to one’s forehead, heart, or lips. It is commonly practiced among Malays and Muslims. However, when a body’s phenotypic markers do not adequately signify racial identity, insiders may not extend such affective body language to them. As Nadia laments:When I first came to uni, the Malay kampong [literally translates into ‘village’, but figuratively stands for a social group in which reciprocal Malay cultural relationality is attached] couldn’t tell I was one of them… when I tried to salaam one of [the boys], he asked me why I was shaking his hand!Butler illuminated the notion of bodily signifiers (skin tone) marking access and limitations of corporeal exchange (salaam). Visual signifiers on biracial bodies must thus be significant enough to signpost one’s racial master status, in order to be positively assessed, acknowledged, and legitimated by Others.Among the women, only Wahida had committed to wearing a tudung at the time of the interview. Although a religious Islamic practice (as opposed to a culturally Malay one), such ethnic dress as ethnic signifier takes precedence over one’s ambivalent bodily markers. Wahida expressed that dressing in her jubah hyper-visualised her Malayness, especially when she was schooling in a Madrasah where fellow students dressed similarly.Omar’s concept of Masuk Melayu – literally ‘to enter Malayness’ – describes non-ethnic Malays who ‘become’ Malay through converting into Islam and practising the religion. Despite Wahida’s ambivalent fair skin tone, donning a tudung publically signifies her religious inclination and signals to Other Malays her racial master status. This thus earns her legitimacy in the social group more so than other ambivalent Malay-Chinese women without such religious symbolism.Agentic IllegitimacyIn negotiating their biraciality within the setting of educational institutions, these five Malay-Chinese women expressed the body ‘being’, ‘speaking’, and ‘doing’ strategies in which selected traits more commonly associated with Malayness or Chineseness were hyper-visibilised or under-visibilised, depending on the setting in which they find themselves (Wilson), and social group in which they want to gain membership and favour. Sara recalls having to choose an ethnic dress to wear to her Primary School’s Racial Harmony Day. Her father suggested “a mix” such as “a red baju kurung” or a “green cheong sum” (in Singapore, red is associated with the festivities of Chinese New Year and green with Hari Raya) where she could express her biraciality. Owing to this childhood memory, she says she still attempts to convey her racial hybridity by dressing strategically at festive family gatherings. Atiqah similarly peppers conversations with Chinese friends with the few Mandarin phrases she knows, partly to solicit an affective response when they tease her for “trying”, and also to subtly remind them of her desire for acknowledgement and inclusivity. Despite expressing similar frustrations over their exclusion and ‘illegitimate’ status in hom*oethnic settings, the women reacted agentically by continuously asserting emic readings of their corporeal ambivalence, and entering into spaces that give them the opportunity to reframe Others’ readings of their visual markers through microactions. However, enacting this agentic ethnic repertoire necessitates an intimate understanding of both Malay and Chinese social markers (Choudhry 120).None of the women suggested completely dissociating themselves from either Malayness or Chineseness, although they may selectively hyper-visibilise one over the other to legitimate their group membership. Instead, they engage in a continuously dialectic repositioning that requires reflexivity, self-awareness, and an attentiveness to how they are perceived from the etic. By inculcating Malay and Chinese social cues into their repertoire, these biracial women can strategically enact their desired racial master status fluently, treating ethnic identity as fluid and in flux (Choudhry 120). In transgressing popular perceptions of CMIO imagery, Malay-Chinese women use their bodies as a sustained site for contesting visual racial stereotypes and reframe their everyday ‘illegitimacy’ into agentic ambivalence, albeit only selectively in spaces where their racial membership would be favourable.ReferencesAhmed, Sara. “Racialized Bodies.” Real Bodies: A Sociological Introduction. Ed. Mary Evans, and Ellie Lee. New York: Palgrave, 2002. 46-63.Butler, Judith. Gender Trouble: Feminism and the Subversion of Identity. New York: Routledge, 1999.Choudhry, Sultana. Multifaceted Identity of Interethnic Young People: Chameleon Identities. Farnham, England: Ashgate, 2010.Cooley, Charles. Human Nature and the Social Order. New York: Scribner's, 1902. Katz, Ilan. The Construction of Racial Identity in Children of Mixed Parentage – Mixed Metaphors. London: J. Kingsley Publishers, 1996.Malbon, Ben. “The Club. Clubbing: Consumption, Identity and the Spatial Practices of Every-Night Life.” Cool Places: Geographies of Youth Cultures, Ed. Tracey Skelton, Gill Valentine. Routledge: London, 1997. 266-288.Mohanty, Satya P. “Epilogue. Colonial Legacies, Multicultural Futures: Relativism, Objectivity, and the Challenge of Otherness.” PMLA 110.1 (1995). 14 Sep 2014 ‹http://www.jstor.org/stable/463198›.Omar, Ariffin. Bangsa Melayu: Malay Concepts of Democracy and Community, 1945-1950. Oxford: Oxford University, 1993.Rockquemore, Kerry Ann, and Tracy A. Laszloffy. Raising Biracial Children. Lanham, MD: Altamira Press, 2005.Wilson, Anne. Mixed Race Children – A Study of Identity. London: Allen & Unwin, 1987.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

RACHAEL. It seems you feel our work is not a benefit to the public.DECKARD. Replicants are like any other machine. They're either a benefit or a hazard. If they're a benefit it's not my problem.RACHAEL. May I ask you a personal question?DECKARD. Yes.RACHAEL. Have you every retired a human by mistake? (Scott 17:30) CAPTCHAs (henceforth "captchas") are commonplace on today's Internet. Their purpose seems clear: block malicious software, allow human users to pass. But as much as they exclude spambots, captchas often exclude humans with visual and other disabilities (Dzieza; W3C Working Group). Worse yet, more and more advanced captcha-breaking technology has resulted in more and more challenging captchas, raising the barrier between online services and those who would access them. In the words of inclusive design advocate Robin Christopherson, "CAPTCHAs are evil". In this essay I describe how the captcha industry implements a posthuman process that speculative fiction has gestured toward but not grasped. The hostile posthumanity of captcha is not just a technical problem, nor just a problem of usability or access. Rather, captchas convey a design philosophy that asks humans to prove themselves by performing well at disembodied games. This philosophy has its roots in the Turing Test itself, whose terms guide speculation away from the real problems that today's authentication systems present. Drawing the concept of "procedurality" from game studies, I argue that, despite a design goal of separating machines and humans to the benefit of the latter, captchas actually and ironically produce an arms race in which humans have a systematic and increasing disadvantage. This arms race results from the Turing Test's equivocation between human and machine bodies, an assumption whose influence I identify in popular film, science fiction literature, and captcha design discourse. The Captcha Industry and Its Side-Effects Exclusion is an essential function of every cybersecurity system. From denial-of-service attacks to data theft, toxic automated entities constantly seek admission to services they would damage. To remain functional and accessible, Websites need security systems to keep out "abusive agents" (Shet). In cybersecurity, the term "user authentication" refers to the process of distinguishing between abusive agents and welcome users (Jeng et al.). Of the many available authentication techniques, CAPTCHA, "Completely Automated Public Turing test[s] to tell Computers and Humans Apart" (Von Ahn et al. 1465), is one of the most iconic. Although some captchas display a simple checkbox beside a disclaimer to the effect that "I am not a robot" (Shet), these frequently give way to more difficult alternatives: perception tests (fig. 1). Test captchas may show sequences of distorted letters, which a user is supposed to recognise and then type in (Godfrey). Others effectively digitize a game of "I Spy": an image appears, with an instruction to select the parts of it that show a specific type of object (Zhu et al.). A newer type of captcha involves icons rotated upside-down or sideways, the task being to right them (Gossweiler et al.). These latter developments show the influence of gamification (Kani and Nishigaki; Kumar et al.), the design trend where game-like elements figure in serious tasks. Fig. 1: A series of captchas followed by multifactor authentication as a "quick security check" during the author's suspicious attempt to access LinkedIn over a Virtual Private Network Gamified captchas, in using tests of ability to tell humans from computers, invite three problems, of which only the first has received focussed critical attention. I discuss each briefly below, and at greater length in subsequent sections. First, as many commentators have pointed out (W3C Working Group), captchas can accidentally categorise real humans as nonhumans—a technical problem that becomes more likely as captcha-breaking technologies improve (e.g. Tam et al.; Brown et al.). Indeed, the design and breaking of captchas has become an almost self-sustaining subfield in computer science, as researchers review extant captchas, publish methods for breaking them, and publish further captcha designs (e.g. Weng et al.). Such research fuels an industry of captcha-solving services (fig. 2), of which some use automated techniques, and some are "human-powered", employing groups of humans to complete large numbers of captchas, thus clearing the way for automated incursions (Motoyama et al. 2). Captchas now face the quixotic task of using ability tests to distinguish legitimate users from abusers with similar abilities. Fig. 2: Captcha production and captcha breaking: a feedback loop Second, gamified captchas import the feelings of games. When they defeat a real human, the human seems not to have encountered the failure state of an automated procedure, but rather to have lost, or given up on, a game. The same frame of "gameful"-ness (McGonigal, under "Happiness Hacking") or "gameful work" (under "The Rise of the Happiness Engineers"), supposed to flatter users with a feeling of reward or satisfaction when they complete a challenge, has a different effect in the event of defeat. Gamefulness shifts the fault from procedure to human, suggesting, for the latter, the shameful status of loser. Third, like games, gamified captchas promote a particular strain of logic. Just as other forms of media can be powerful venues for purveying stereotypes, so are gamified captchas, in this case conveying the notion that ability is a legitimate means, not only of apportioning privilege, but of humanising and dehumanising. Humanity thus appears as a status earned, and disability appears not as a stigma, nor an occurrence, but an essence. The latter two problems emerge because the captcha reveals, propagates and naturalises an ideology through mechanised procedures. Below I invoke the concept of "procedural rhetoric" to critique the disembodied notion of humanity that underlies both the original Turing Test and the "Completely Automated Public Turing test." Both tests, I argue, ultimately play to the disadvantage of their human participants. Rhetorical Games, Procedural Rhetoric When videogame studies emerged as an academic field in the early 2000s, once of its first tasks was to legitimise games relative to other types of artefact, especially literary texts (Eskelinen; Aarseth). Scholars sought a framework for discussing how video games, like other more venerable media, can express ideas (Weise). Janet Murray and Ian Bogost looked to the notion of procedure, devising the concepts of "procedurality" (Bogost 3), "procedural authorship" (Murray 171), and "procedural rhetoric" (Bogost 1). From a proceduralist perspective, a videogame is both an object and a medium for inscribing processes. Those processes have two basic types: procedures the game's developers have authored, which script the behaviour of the game as a computer program; and procedures human players respond with, the "operational logic" of gameplay (Bogost 13). Procedurality's two types of procedure, the computerised and the human, have a kind of call-and-response relationship, where the behaviour of the machine calls upon players to respond with their own behaviour patterns. Games thus train their players. Through the training that is play, players acquire habits they bring to other contexts, giving videogames the power not only to express ideas but "disrupt and change fundamental attitudes and beliefs about the world, leading to potentially significant long-term social change" (Bogost ix). That social change can be positive (McGonigal), or it can involve "dark patterns", cases where game procedures provoke and exploit harmful behaviours (Zagal et al.). For example, embedded in many game paradigms is the procedural rhetoric of "toxic meritocracy" (Paul 66), where players earn rewards, status and personal improvement by overcoming challenges, and, especially, excelling where others fail. While meritocracy may seem logical within a strictly competitive arena, its effect in a broader cultural context is to legitimise privileges as the spoils of victory, and maltreatment as the just result of defeat. As game design has influenced other fields, so too has procedurality's applicability expanded. Gamification, "the use of game design elements in non-game contexts" (Deterding et al. 9), is a popular trend in which designers seek to imbue diverse tasks with some of the enjoyment of playing a game (10). Gamification discourse has drawn heavily upon Mihaly Csikszentmihalyi's "positive psychology" (Seligman and Csikszentmihalyi), and especially the speculative psychology of flow (Csikszentmihalyi 51), which promise enormously broad benefits for individuals acting in the "flow state" that challenging play supposedly promotes (75). Gamification has become a celebrated cause, advocated by a group of scholars and designers Sebastian Deterding calls the "Californian league of gamification evangelists" (120), before becoming an object of critical scrutiny (Fuchs et al.). Where gamification goes, it brings its dark patterns with it. In gamified user authentication (Kroeze and Olivier), and particularly gamified captcha, there occurs an intersection of deceptively difficult games, real-world stakes, and users whose differences go often ignored. The Disembodied Arms Race In captcha design research, the concept of disability occurs under the broader umbrella of usability. Usability studies emphasise the fact that some technology pieces are easier to access than others (Yan and El Ahmad). Disability studies, in contrast, emphasises the fact that different users have different capacities to overcome access barriers. Ability is contextual, an intersection of usability and disability, use case and user (Reynolds 443). When used as an index of humanness, ability yields illusive results. In Posthuman Knowledge, Rosi Braidotti begins her conceptual enquiry into the posthuman condition with a contemplation of captcha, asking what it means to tick that checkbox claiming that "I am not a robot" (8), and noting the baffling multiplicity of possible answers. From a practical angle, Junya Kani and Masakatsu Nishigaki write candidly about the problem of distinguishing robot from human: "no matter how advanced malicious automated programs are, a CAPTCHA that will not pass automated programs is required. Hence, we have to find another human cognitive processing capability to tackle this challenge" (40). Kani and Nishigaki try out various human cognitive processing capabilities for the task. Narrative comprehension and humour become candidates: might a captcha ascribe humanity based on human users' ability to determine the correct order of scenes in a film (43)? What about panels in a cartoon (40)? As they seek to assess the soft skills of machines, Kani and Nishigaki set up a drama similar to that of Philip K. Dick's Do Androids Dream of Electric Sheep. Do Androids Dream of Electric Sheep, and its film adaptation, Blade Runner (Scott), describe a spacefaring society populated by both humans and androids. Androids have lesser legal privileges than humans, and in particular face execution—euphemistically called "retirement"—for trespassing on planet Earth (Dick 60). Blade Runner gave these androids their more famous name: "replicant". Replicants mostly resemble humans in thought and action, but are reputed to lack the capacity for empathy, so human police, seeking a cognitive processing capability unique to humans, test for empathy to test for humanness (30). But as with captchas, Blade Runner's testing procedure depends upon an automated device whose effectiveness is not certain, prompting the haunting question: "have you ever retired a human by mistake?" (Scott 17:50). Blade Runner's empathy test is part of a long philosophical discourse about the distinction between human and machine (e.g. Putnam; Searle). At the heart of the debate lies Alan Turing's "Turing Test", which a machine hypothetically passes when it can pass itself off as a human conversationalist in an exchange of written text. Turing's motivation for coming up with the test goes: there may be no absolute way of defining what makes a human mind, so the best we can do is assess a computer's ability to imitate one (Turing 433). The aporia, however—how can we determine what makes a human mind?—is the result of an unfair question. Turing's test, dealing only with information expressed in strings of text, purposely disembodies both humans and machines. The Blade Runner universe similarly evens the playing field: replicants look, feel and act like humans to such an extent that distinguishing between the two becomes, again, the subject of a cognition test. The Turing Test, obsessed with information processing and steeped in mind-body dualism, assesses humanness using criteria that automated users can master relatively easily. In contrast, in everyday life, I use a suite of much more intuitive sensory tests to distinguish between my housemate and my laptop. My intuitions capture what the Turing Test masks: a human is a fleshy entity, possessed of the numerous trappings and capacities of a human body. The result of the automated Turing Test's focus on cognition is an arms race that places human users at an increasing disadvantage. Loss, in such a race, manifests not only as exclusion by and from computer services, but as a redefinition of proper usership, the proper behaviour of the authentic, human, user. Thus the Turing Test implicitly provides for a scenario where a machine becomes able to super-imitate humanness: to be perceived as human more often than a real human would be. In such an outcome, it would be the human conversationalist who would begin to fail the Turing test; to fail to pass themself off according to new criteria for authenticity. This scenario is possible because, through procedural rhetoric, machines shift human perspectives: about what is and is not responsible behaviour; about what humans should and should not feel when confronted with a challenge; about who does and does not deserve access; and, fundamentally, about what does and does not signify authentic usership. In captcha, as in Blade Runner, it is ultimately a machine that adjudicates between human and machine cognition. As users we rely upon this machine to serve our interests, rather than pursue some emergent automated interest, some by-product of the feedback loop that results from the ideologies of human researchers both producing and being produced by mechanised procedures. In the case of captcha, that faith is misplaced. The Feeling of Robopocalypse A rich repertory of fiction has speculated upon what novelist Daniel Wilson calls the "Robopocalypse", the scenario where machines overthrow humankind. Most versions of the story play out as a slave-owner's nightmare, featuring formerly servile entities (which happen to be machines) violently revolting and destroying the civilisation of their masters. Blade Runner's rogue replicants, for example, are effectively fugitive slaves (Dihal 196). Popular narratives of robopocalypse, despite showing their antagonists as lethal robots, are fundamentally human stories with robots playing some of the parts. In contrast, the exclusion a captcha presents when it defeats a human is not metaphorical or emancipatory. There, in that moment, is a mechanised entity defeating a human. The defeat takes place within an authoritative frame that hides its aggression. For a human user, to be defeated by a captcha is to fail to meet an apparently common standard, within the framework of a common procedure. This is a robopocalypse of baffling systems rather than anthropomorphic soldiers. Likewise, non-human software clients pose threats that humanoid replicants do not. In particular, software clients replicate much faster than physical bodies. The sheer sudden scale of a denial-of-service attack makes Philip K. Dick's vision of android resistance seem quaint. The task of excluding unauthorised software, unlike the impulse to exclude replicants, is more a practical necessity than an exercise in colonialism. Nevertheless, dystopia finds its way into the captcha process through the peril inherent in the test, whenever humans are told apart from authentic users. This is the encroachment of the hostile posthuman, naturalised by us before it denaturalises us. The hostile posthuman sometimes manifests as a drone strike, Terminator-esque (Cameron), a dehumanised decision to kill (Asaro). But it is also a process of gradual exclusion, detectable from moment to moment as a feeling of disdain or impatience for the irresponsibility, incompetence, or simply unusualness of a human who struggles to keep afloat of a rising standard. "We are in this together", Braidotti writes, "between the algorithmic devil and the acidified deep blue sea" (9). But we are also in this separately, divided along lines of ability. Captcha's danger, as a broken procedure, hides in plain sight, because it lashes out at some only while continuing to flatter others with a game that they can still win. Conclusion Online security systems may always have to define some users as legitimate and others as illegitimate. Is there a future where they do so on the basis of behaviour rather than identity or essence? Might some future system accord each user, human or machine, the same authentic status, and provide all with an initial benefit of the doubt? In the short term, such a system would seem grossly impractical. The type of user that most needs to be excluded is the disembodied type, the type that can generate orders of magnitude more demands than a human, that can proliferate suddenly and in immense number because it does not lag behind the slow processes of human bodies. This type of user exists in software alone. Rich in irony, then, is the captcha paradigm which depends on the disabilities of the threats it confronts. We dread malicious software not for its disabilities—which are momentary and all too human—but its abilities. Attenuating the threat presented by those abilities requires inverting a habit that meritocracy trains and overtrains: specifically, we have here a case where the plight of the human user calls for negative action toward ability rather than disability. References Aarseth, Espen. "Computer Game Studies, Year One." Game Studies 1.1 (2001): 1–15. Asaro, Peter. "On Banning Autonomous Weapon Systems: Human Rights, Automation, and the Dehumanization of Lethal Decision-Making." International Review of the Red Cross 94.886 (2012): 687–709. Blade Runner. Dir. Ridley Scott. Warner Bros, 1982. Bogost, Ian. Persuasive Games: The Expressive Power of Videogames. Cambridge, MA: MIT Press, 2007. Braidotti, Rosi. Posthuman Knowledge. Cambridge: Polity Press, 2019. Brown, Samuel S., et al. "I Am 'Totally' Human: Bypassing the Recaptcha." 13th International Conference on Signal-Image Technology & Internet-Based Systems (SITIS), 2017. Christopherson, Robin. "AI Is Making CAPTCHA Increasingly Cruel for Disabled Users." AbilityNet 2019. 17 Sep. 2020 <https://abilitynet.org.uk/news-blogs/ai-making-captcha-increasingly-cruel-disabled-users>. Csikszentmihalyi, Mihaly. Flow: The Psychology of Optimal Experience. Harper & Row: New York, 1990. Deterding, Sebastian. "Eudaimonic Design, Or: Six Invitations to Rethink Gamification." Rethinking Gamification. Eds. Mathias Fuchs et al. Lüneburg: Meson Press, 2014. Deterding, Sebastian, et al. "From Game Design Elements to Gamefulness: Defining Gamification." Proceedings of the 15th International Academic MindTrek Conference: Envisioning Future Media Environments. ACM, 2011. Dick, Philip K. Do Androids Dream of Electric Sheep. 1968. New York: Del Rey, 1996. Dihal, Kanta. "Artificial Intelligence, Slavery, and Revolt." AI Narratives: A History of Imaginative Thinking about Intelligent Machines. Eds. Stephen Cave, Kanta Dihal, and Sarah Dillon. 2020. 189–212. Dzieza, Josh. "Why Captchas Have Gotten So Difficult." The Verge 2019. 17 Sep. 2020 <https://www.theverge.com/2019/2/1/18205610/google-captcha-ai-robot-human-difficult-artificial-intelligence>. Eskelinen, Markku. "Towards Computer Game Studies." Digital Creativity 12.3 (2001): 175–83. Fuchs, Mathias, et al., eds. Rethinking Gamification. Lüneburg: Meson Press, 2014. Godfrey, Philip Brighten. "Text-Based CAPTCHA Algorithms." First Workshop on Human Interactive Proofs, 15 Dec. 2001. 14 Nov. 2020 <http://www.aladdin.cs.cmu.edu/hips/events/abs/godfreyb_abstract.pdf>. Gossweiler, Rich, et al. "What's Up CAPTCHA? A CAPTCHA Based on Image Orientation." Proceedings of the 18th International Conference on World Wide Web. WWW, 2009. Jeng, Albert B., et al. "A Study of CAPTCHA and Its Application to User Authentication." International Conference on Computational Collective Intelligence. Springer, 2010. Kani, Junya, and Masakatsu Nishigaki. "Gamified Captcha." International Conference on Human Aspects of Information Security, Privacy, and Trust. Springer, 2013. Kroeze, Christien, and Martin S. Olivier. "Gamifying Authentication." 2012 Information Security for South Africa. IEEE, 2012. Kumar, S. Ashok, et al. "Gamification of Internet Security by Next Generation Captchas." 2017 International Conference on Computer Communication and Informatics (ICCCI). IEEE, 2017. McGonigal, Jane. Reality Is Broken: Why Games Make Us Better and How They Can Change the World. Penguin, 2011. Motoyama, Marti, et al. "Re: Captchas – Understanding CAPTCHA-Solving Services in an Economic Context." USENIX Security Symposium. 2010. Murray, Janet. Hamlet on the Holodeck: The Future of Narrative in Cyberspace. New York: The Free Press, 1997. Paul, Christopher A. The Toxic Meritocracy of Video Games: Why Gaming Culture Is the Worst. University of Minnesota Press, 2018. Putnam, Hilary. "Robots: Machines or Artificially Created Life?" The Journal of Philosophy 61.21 (1964): 668–91. Reynolds, Joel Michael. "The Meaning of Ability and Disability." The Journal of Speculative Philosophy 33.3 (2019): 434–47. Searle, John. "Minds, Brains, and Programs." Behavioral and Brain Sciences 3.3 (1980): 417–24. Seligman, Martin, and Mihaly Csikszentmihalyi. "Positive Psychology: An Introduction." Flow and the Foundations of Positive Psychology. 2000. Springer, 2014. 279–98. Shet, Vinay. "Are You a Robot? Introducing No Captcha Recaptcha." Google Security Blog 3 (2014): 12. Tam, Jennifer, et al. "Breaking Audio Captchas." Advances in Neural Information Processing Systems. 2009. Proceedings of the 21st International Conference on Neural Information Processing Systems 1625–1632. ACM, 2008. The Terminator. Dir. James Cameron. Orion, 1984. Turing, Alan. "Computing Machinery and Intelligence." Mind 59.236 (1950). Von Ahn, Luis, et al. "Recaptcha: Human-Based Character Recognition via Web Security Measures." Science 321.5895 (2008): 1465–68. W3C Working Group. "Inaccessibility of CAPTCHA: Alternatives to Visual Turing Tests on the Web." W3C 2019. 17 Sep. 2020 <https://www.w3.org/TR/turingtest/>. Weise, Matthew. "How Videogames Express Ideas." DiGRA Conference. 2003. Weng, Haiqin, et al. "Towards Understanding the Security of Modern Image Captchas and Underground Captcha-Solving Services." Big Data Mining and Analytics 2.2 (2019): 118–44. Wilson, Daniel H. Robopocalypse. New York: Doubleday, 2011. Yan, Jeff, and Ahmad Salah El Ahmad. "Usability of Captchas or Usability Issues in CAPTCHA Design." Proceedings of the 4th Symposium on Usable Privacy and Security. 2008. Zagal, José P., Staffan Björk, and Chris Lewis. "Dark Patterns in the Design of Games." 8th International Conference on the Foundations of Digital Games. 2013. 25 Aug. 2020 <http://soda.swedish-ict.se/5552/1/DarkPatterns.1.1.6_cameraready.pdf>. Zhu, Bin B., et al. "Attacks and Design of Image Recognition Captchas." Proceedings of the 17th ACM Conference on Computer and Communications Security. 2010.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

"I write for a species that does not yet exist." -- Nietzsche (958) III. Note on Self-Organisation and Selectionism According to your mainstream brand neo-Darwinian biologist, natural selection is the stuff of which evolution is made, the First Principle of life. There is nothing in the natural world which cannot be explained by random mutations within the genome and subsequent selection of the fittest form by the natural environment. Beyond the constraints set by the period of waiting for mutations to occur and external conditions, there are no limits to this system, and an organism forms from scratch to a furry crawling thing in a gradual process reliant on external factors. Neo-Darwinism is an attempt to reconcile two theories which are quite simply at odds with one another: Mendelian genetics, which claims that organisms do not change with time, and Darwinism, which claims that they do. This is usually done in a mathematical way, with natural selection as the linchpin of some tight equations. There can be no internal feedback from the body (phenotype) to the genes (genotype). There is no self-organising adaptive order: all emerges from the process of selection as a carefully articulated tree diagram, and adapts over eons. As the Darwinian critic Arthur Koestler pointed out, natural selection is hence the only process found in nature which is devoid of feedback. Neo-Darwinian theory is both unfalsifiable and all-pervasive; it is easy to forget that it is a theory which has not yet been proven beyond doubt by paleontological fact, and that Darwin himself suggested there may be processes other than natural selection at work in the unfolding of life. There are a couple of rogue biologists and a-life crazies, however, that don't believe the Selectionist hype. They are not suggesting that natural selection is a dud theory, but simply that there might be other factors involved, and that the really interesting questions don't just concern life as a Darwinian competition between furry, crawling things, but the interplay between structure and chaos at the basic levels of the system which might give rise to it. Biologists such as Brian Goodwin and Stuart Kauffman take issue with this, claiming that an understanding of life should begin at a more fundamental level than tree diagrams and zoology -- molecular biology, biochemistry, complexity theory. This is the 'language' of life: the way that structure spontaneously emerges from chaos. Niles Eldredge and Stephen Jay Gould looked at the fossil record a few years back and decided that there is no proof that one species turns into another slowly: the mathematics of the Neo-Darwinists relied upon the idea that species took hundreds of millions of years to evolve eyes and ears and legs and wings, branching off into other species in the manner of a tree diagram over billions of years. What Eldredge and Gould found was that species seem to spontaneously emerge fully formed: there is minimal variation going on. A species emerges rapidly, it lasts for a time (often a short time), and then it dies off. The in-between period, the period of mutation and selectionism, is largely unaccounted for by the fossil record, especially considering the importance of such transitory phases to the neo-Darwinists. There are many 'missing links' in the record. For over twenty years, Stuart Kauffman has been going on about what we might call a Second Principle in evolutionary biology: self-organisation. He argues that because natural selection alone is not enough to explain the relatively short timescale on which life arose, some other ordering principle is necessary. He locates this, as Katherine Hayles observes, in the ability of complex systems to self-organise (241). A self-organising system involves the heresy of internal feedback and internally-produced constraints. Living creatures would converge upon certain forms as much as diverge from them due to the influence of mutations caused by cosmic rays, wild chance and external factors. Creatures will not just evolve over billions of years due to selection, but will appear in a more concerted and spontaneous manner. Systems will seek their own order. The heresy in this (as far as neo-Darwinians are concerned, but not all evolutionary biologists) is located in the fact that such enabling constraints emerge from within the system itself. Consequently, natural selection is not the only force at work in evolution. The system is its own material of expression, and can generate its own tendencies and limits. Kauffman calls this process antichaos, or "order for free" (335). One can sense that such a theory would be objectionable to biologists: there is nothing distinctively biological about this explanation, which in fact borrows from physics and complexity theory, and it explores living organisms, chemical compositions and non-biological aggregates alike as systems, privileging no particular machine. A 'complex system', in particular, can be anything from the stockmarket to a flock of birds. XI. Sonicform We might note here a similarity with virtual artist Keith Nettos's Java-based sound system, Sonicform, whose evolving sound structures can be obtained from the artist on request <lucidweave@usa.net>: the divide between living and non-living is not the issue. As Keith puts it, "it's an echo of that Descartian dichotomy between mind and matter. Do such distinctions help us to know ourselves better? I'm not sure that they do". Sonicform is more a world of Newtonian discovery than biblical creation. Self-organisation works on a generative systemic level, and is a prerequisite more so than a defining quality of life or evolution; it is necessary but not sufficient to characterise an organic system. The computer is the perfect environment in which to explore the confusion and commonalities between animate and inanimate systems, and in that confusion, reveal something of the processes underlying the actual generation of self and order in the universe. Information-processing, and life, require a certain type of complexity. The system must be dynamic, yet allow for novel patterns. The computer emphasises the logic as well as the mechanics of life, which are then honed and honoured by the more familiar conception of natural selection. IV. Self-organisation is the natural consequence of simple components (cells, units of sound, air molecules, genes) interacting via equally simple rules. Patterns and forms emerge from the collective raucous, and these forms give rise to other forms. The components in such a system are bimbos: they have no idea what is going on in the greater body, and don't care. In other words, a complex system emerges from lots of small but well-chosen components interacting in a rule-governed way, developing a larger behaviour or pattern which cannot be predicted or divined from these constituent parts. Random mutation and selection will act upon such a system -- this is how Selectionism fits in: forms will not just evolve from scratch via selection, but will spontaneously emerge from within the system, working in conjunction with the First Principle. IV. Sonicform In the Sonicform system, the components are 'sound fragments', the samples attached to the images in the top left-hand corner of the screen at startup, and also the people seated at terminals who interact with these fragments. Although it might seem to be stretching the concept of systemic components to include the user population, the fact that the emerging pattern is dependent on these users to evolve renders them part of the system. The organisation of a machine has less to do with its materiality than with the inter-relations of its components. The rules in Sonicform are the 'sound controllers' located on the right-hand side of the screen, containing basic instructions such as "play sound", "loop sound" and "stop sound" that control the sound fragments and consequently limit the structure of the emerging acoustic pattern. Because Sonicform is linked via the Net to 'sonicserver' and consequently the multiple versions of itself which are being executed at any point in time, any changes that a user makes (e.g. attraction towards a particular kind of sound) are detected by sonicserver and fed back into a primary chain structure. This is the formative basis of Sonicform's 'evolution': a selection of internal behavioural constraints generated by its constituent parts. The heresy in this is the implication that both biological and technical systems are capable of self-organisation and evolution, that both are constellations of universes which are capable of autonomy and complexity (and 'life' as a certain form of complexity). This is not anti-humanist. It's not even post-humanist. Ideology is a human concept which is brought to bear on technology. We're talking a different register altogether. Technical machines, organic machines, conceptual machines: each will beget the other, each will inscribe its own pattern on the process, each will redefine the limits of such connections. VII. The Death of Metaphor: All That Consists Is Real 'Machinic heterogenesis', a term used by Felix Guattari in his book Chaosmosis, is a mode of being and production that draws on complexity theory and the work of Francisco Varela (a biologist interested in self-organisation in immune networks) and Kauffman. Guattari extends the concept of self-organisation to create a pragmatic philosophy. Machinic heterogenesis is a term to describe the way that the machines which populate the universe connect with each other, mutually affect each other, exchange segments and then bifurcate into new machines. Collective existential mutation. When we sit at a computer screen, we are connected with the computer's universes of reference through the circuits of sight, the play of fingers across the keyboard, the conceptual and logical limits of the exchange laid down by both parties. There is a certain synchrony going on across the zone of intersection and compromise to the limits of this exchange. In other words, the limits of the medium define the exchange and what we are becoming as we connect with it. What is the 'ness' of the computer medium, and what are the possible universes of exchange which extend from this? Sonicform explores this exchange through sound, and through a system which explicitly invites us to be a part of an evolving structure. The use of complexity theory and evolution in Sonicform makes explicit the rethinking of machines which we have been doing here in general: machines speak to machines before they speak to Man, and the ontological domains that they reveal and secrete tend towards pattern in an innate way, determined by the mode of aggregation of their constituent parts. Sonicform rethinks technology in terms of evolutionary, collective entities. And this rethinking allows for the particular qualities of the medium itself, its own characteristics, its own unique interpretations of our model of evolution, to express themselves. Here I might note something: evolution cannot be naturalised and reified as an entity independent of the conceptual, technical and scientific machinery of its production. In the eagerness to import biological models to the computer in a-life, we sometimes forget that from its very origins, the human species has been constituted by technical evolution, and that it is the mediation afforded by technics which makes "it impossible simply to describe evolution in terms of a self-contained, or monadic, subject that passively 'adapts' to an object-like environment" (Pearson 4). Similarly, we have produced our various models of evolution by analysing the 'natural environment' through the mediation of technology. Technology has always enjoyed more than just the position of a neutral tool to locate and test Nature, and has its own unique limits and qualities to contribute to anything we produce with it. So this will be the beginning of our rethinking. Constellations of universes colliding, machines exchanging particularities, components that retain their autonomy and yet can collect and self-organise into complex systems, even life. "The ideas that we have been devoting space to here -- instability, fluctuation, complex systems -- diffuse into the social sciences", in the words of Ilya Prigogine (312). If we can create an evolving complex system on the screen which we ourselves are components of, we tend to rethink the interface between nature and technology. What does it say about the "reference point" of the natural world when creatures whose entire function consists of weird acoustic dances across computer circuitry begin to self-replicate and exhibit the signs of open-ended evolution, resulting in formations which no longer have analogues in the 'natural' world? I'd like to hesitate a start here. Biology is its own material of semiotic expression. Techné is its own material of semiotic expression. To address the interface between nature and technology, we need a philosophy of cells, flocks, patterns, components, motors, and elements. We need a philosophy that will create an interference pattern across the zone of intersection. References Hayles, N. Katherine. How We Became Posthuman: Virtual Bodies in Cybernetics, Literature and Informatics. Chicago: U of Chicago P, 1999. Kauffman, Stuart. "Order For Free." The Third Culture. Ed. Brockman. New York: Touchstone Press. Nietzsche, Friedrich. The Will to Power. Trans. W. Kaufmann and R. J. Hollingdale. New York: Random House, 1968. Prigogine, Ilya, and Isabelle Stengers. Order Out of Chaos: Man's New Dialogue with Nature. London: Bantam Books, 1984. Pearson, Keith Ansell. Viroid Life. London: Routledge, 1997. This work is part of the Australian Network for Art and Technology's Deep Immersion: Creative Collaborations project, funded by the AFC. Citation reference for this article MLA style: Belinda Barnet. "Machinic Heterogenesis and Evolution: Collected Notes on Sound, Machines and Sonicform." M/C: A Journal of Media and Culture 2.6 (1999). [your date of access] <http://www.uq.edu.au/mc/9909/sonic.php>. Chicago style: Belinda Barnet, "Machinic Heterogenesis and Evolution: Collected Notes on Sound, Machines and Sonicform," M/C: A Journal of Media and Culture 2, no. 6 (1999), <http://www.uq.edu.au/mc/9906/sonic.php> ([your date of access]). APA style: Belinda Barnet. (1999) Machinic heterogenesis and evolution: collected notes on sound, machines and Sonicform. M/C: A Journal of Media and Culture 2(6). <http://www.uq.edu.au/mc/9909/sonic.php> ([your date of access]).

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

What creative techniques of resistance are available to a female filmmaker when she is the victim of a violent event and filmed at her most vulnerable? This article uses an autoethnographic lens to discuss my experience of a serious car crash my family and I were inadvertently involved in due to police negligence and a criminal act. Employing Creative Analytical Practice (CAP) ethnography, a reflexive form of research which recognises that the creative process, producer and product are “deeply intertwined” (Richardson, “Writing: A Method” 930), I investigate how the crash’s violent affects crippled my agency, manifested in my creative praxis and catalysed my identification of latent forms of institutionalised violence in film culture, its discourse and pedagogy that also contributed to my inertia. The article maps my process of writing a feature length screenplay during the aftermath of the crash as I set out to articulate my story of survival and resistance. Using this narrative inquiry, in which we can “investigate how we construct the world, ourselves, and others, and how standard objectifying practices...unnecessarily limit us” (Richardson, “Writing: A Method” 924), I outline how I attempted to disrupt the entrenched power structures that exist in dominant narratives of violence in film and challenge my subjugated positioning as a woman within this canon. I describe my engagement with the deconstructionist practices of writing the body and militant feminist cinema, which suggest subversive opportunities for women’s self-determination by encouraging us to embrace our exiled positioning in dominant discourse through creative experimentation, and identify some of the possibilities and limitations of this for female agency. Drawing on CAP ethnography, existentialism, film feminism, and narrative reframing, I assert that these reconstructive practices are more effective for the creative enfranchisem*nt of women by not relegating us to the periphery of social systems and cultural forms. Instead, they enable us to speak back to violent structures in a language that has greater social access, context and impact.My strong desire to tell screen stories lies in my belief that storytelling is a crucial evolutionary mechanism of resilience. Narratives do not simply represent the social world but also have the ability to change it by enabling us to “try to figure out how to live our lives meaningfully” (Ellis 760). This conviction has been directly influenced by my personal story of trauma and survival when myself, my siblings, and our respective life partners became involved in a major car crash. Two police officers attending to a drunken brawl in an inner city park had, in their haste, left the keys in the ignition of their vehicle. We were travelling across a major intersection when the police car, which had subsequently been stolen by a man involved in the brawl – a man who was wanted on parole, had a blood alcohol level three times over the legal limit, and was driving at speeds exceeding 110kms per hour - ran a red light and crossed our path, causing us to crash into his vehicle. From the impact, the small four-wheel drive we were travelling in was catapulted metres into the air, rolling numerous times before smashing head on into oncoming traffic. My heavily pregnant sister was driving our vehicle.The incident attracted national media attention and our story became a sensationalist spectacle. Each news station reported erroneous and conflicting information, one stating that my sister had lost her unborn daughter, another even going so far as to claim my sister had died in the crash. This tabloidised, ‘if it bleeds, it leads’, culture of journalism, along with new digital technologies, encourages and facilitates the normalisation of violent acts, often inflicted on women. Moreover, in their pursuit of high-rating stories, news bodies motivate dehumanising acts of citizen journalism that see witnesses often inspired to film, rather than assist, victims involved in a violent event. Through a connection with someone working for a major news station, we discovered that leading news broadcasters had bought a tape shot by a group of men who call themselves the ‘Paparazzi of Perth’. These men were some of the first on the scene and began filming us from only a few metres away while we were still trapped upside down and unconscious in our vehicle. In the recording, the men are heard laughing and celebrating our tragedy as they realise the lucrative possibilities of the shocking imagery they are capturing as witnesses pull us out of the back of the car, and my pregnant sister incredibly frees herself from the wreckage by kicking out the window.As a female filmmaker, I saw the bitter irony of this event as the camera was now turned on me and my loved ones at our most vulnerable. In her discussion of the male gaze, a culturally sanctioned form of narrational violence against women that is ubiquitous in most mainstream media, Mulvey proposes that women are generally the passive image, trapped by the physical limits of the frame in a permanent state of powerlessness as our identity is reduced to her “to-be-looked-at-ness” (40). For a long period of time, the experience of performing the role of this commodified woman of a weaponised male gaze, along with the threat of annihilation associated with our near-death experience, immobilised my spirit. I felt I belonged “more to the dead than to the living” (Herman 34). When I eventually returned to my creative praxis, I decided to use scriptwriting as both my “mode of reasoning and a mode of representation” (Richardson, Writing Strategies 21), test whether I could work through my feelings of alienation and violation and reclaim my agency. This was a complex and harrowing task because my memories “lack[ed] verbal narrative and context” (Herman 38) and were deeply rooted in my body. Cixous confirms that for women, “writing and voice...are woven together” and “spring from the deepest layers of her psyche” (Moi 112). For many months, I struggled to write. I attempted to block out this violent ordeal and censor my self. I soon learnt, however, that my body could not be silenced and was slow to forget. As I tried to write around this experience, the trauma worked itself deeper inside of me, and my physical symptoms worsened, as did the quality of my writing.In the early version of the screenplay I found myself writing a female-centred film about violence, identity and death, using the fictional narrative to express the numbness I experienced. I wrote the female protagonist with detachment as though she were an object devoid of agency. Sartre claims that we make objects of others and of ourselves in an attempt to control the uncertainty of life and the ever-changing nature of humanity (242). Making something into an object is to deprive it of life (and death); it is our attempt to keep ourselves ‘safe’. While I recognise that the car crash’s reminder of my mortality was no doubt part of the reason why I rendered myself, and the script’s female protagonist, lifeless as agentic beings, I sensed that there were subtler operations of power and control behind my self-objectification and self-censorship, which deeply concerned me. What had influenced this dea(r)th of female agency in my creative imaginings? Why did I write my female character with such a red pen? Why did I seem so compelled to ‘kill’ her? I wanted to investigate my gender construction, the complex relationship between my scriptwriting praxis, and the context within which it is produced to discover whether I could write a different future for myself, and my female characters. Kiesinger supports “contextualizing our stories within the framework of a larger picture” (108), so as to remain open to the possibility that there might not be anything ‘wrong’ with us, per se, “but rather something very wrong with the dynamics that dominate the communicative system” (109) within which we operate: in the case of my creative praxis, the oppressive structures present in the culture of film and its pedagogy.Pulling FocusWomen are supposed to be the view and when the view talks back, it is uncomfortable.— Jane Campion (Filming Desire)It is a terrible thing to see that no one has ever taught us how to develop our vision as women neither in the history of arts nor in film schools.— Marie Mandy (Filming Desire)The democratisation of today’s media landscape through new technologies, the recent rise in female-run production companies (Zemler) in Hollywood, along with the ground-breaking #MeToo and Time’s Up movements has elevated the global consciousness of gender-based violence, and has seen the screen industry seek to redress its history of gender imbalance. While it is too early to assess the impact these developments may have on women’s standing in film, today the ‘celluloid ceiling’ still operates on multiple levels of indoctrination and control through a systemic pattern of exclusion for women that upholds the “nearly seamless dialogue among men in cinema” (Lauzen, Thumbs Down 2). Female filmmakers occupy a tenuous position of influence in the mainstream industry and things are not any better on the other side of the camera (Lauzen, The Celluloid Ceiling). For the most part, Hollywood’s male gaze and penchant for sexualising and (physically or figuratively) killing female characters, which normalises violence against women and is “almost inversely proportional to the liberation of women in society” (Mandy), continues to limit women to performing as the image rather than the agent on screen.Film funding bodies and censorship boards, mostly comprised of men, remain exceptionally averse to independent female filmmakers who go against the odds to tell their stories, which often violate taboos about femininity and radically redefine female agency through the construction of the female gaze: a narrational technique of resistance that enables reel woman to govern the point of view, imagery and action of the film (Smelik 51-52). This generally sees their films unjustly ghettoised through incongruent classification or censorship, and forced into independent or underground distribution (Sexton-Finck 165-182). Not only does censorship propose the idea that female agency is abject and dangerous and needs to be restrained, it prevents access to this important cinema by women that aims to counter the male gaze and “shield us from this type of violence” (Gillain 210). This form of ideological and institutional gatekeeping is not only enforced in the film industry, it is also insidiously (re)constituted in the epistemological construction of film discourse and pedagogy, which in their design, are still largely intrinsically gendered institutions, encoded with phallocentric signification that rejects a woman’s specificity and approach to knowledge. Drawing on my mutually informative roles as a former film student and experienced screen educator, I assert that most screen curricula in Australia still uphold entrenched androcentric norms that assume the male gaze and advocate popular cinema’s didactic three-act structure, which conditions our value systems to favour masculinity and men’s worldview. This restorative storytelling approach is argued to be fatally limiting to reel women (Smith 136; Dancyger and Rush 25) as it propagates the Enlightenment notion of a universal subjectivity, based on free will and reason, which neutralises the power structures of society (and film) and repudiates the influence of social positioning on our opportunity for agency. Moreover, through its omniscient consciousness, which seeks to efface the presence of a specific narrator, the three-act method disavows this policing of female agency and absolves any specific individual of responsibility for its structural violence (Dyer 98).By pulling focus on some of these problematic mechanisms in the hostile climate of the film industry and its spaces of learning for women, I became acutely aware of the more latent forms of violence that had conditioned my scriptwriting praxis, the ambivalence I felt towards my female identity, and my consequent gagging of the female character in the screenplay.Changing Lenses How do the specific circ*mstances in which we write affect what we write? How does what we write affect who we become?— Laurel Richardson (Fields of Play 1)In the beginning, there is an end. Don’t be afraid: it’s your death that is dying. Then: all the beginnings.— Helene Cixous (Cixous and Jensen 41)The discoveries I made during my process of CAP ethnography saw a strong feeling of dissidence arrive inside me. I vehemently wanted to write my way out of my subjugated state and release some of the anguish that my traumatised body was carrying around. I was drawn to militant feminist cinema and the French poststructuralist approach of ‘writing the body’ (l’ecriture feminine) given these deconstructive practices “create images and ideas that have the power to inspire to revolt against oppression and exploitation” (Moi 120). Feminist cinema’s visual treatise of writing the body through its departure from androcentric codes - its unformulaic approach to structure, plot, character and narration (De Lauretis 106) - revealed to me ways in which I could use the scriptwriting process to validate my debilitating experience of physical and psychic violence, decensor my self and move towards rejoining the living. Cixous affirms that, “by writing her self, woman will return to the body which has been more than confiscated from her, which has been turned into…the ailing or dead figure” (Cixous, The Laugh of the Medusa 880). It became clear to me that the persistent themes of death that manifested in the first draft of the script were not, as I first suspected, me ‘rehearsing to die’, or wanting to kill off the woman inside me. I was in fact “not driven towards death but by death” (Homer 89), the close proximity to my mortality, acting as a limit, was calling for a strengthening of my life force, a rebirth of my agency (Bettelheim 36). Mansfield acknowledges that death “offers us a freedom outside of the repression and logic that dominate our daily practices of keeping ourselves in order, within the lines” (87).I challenged myself to write the uncomfortable, the unfamiliar, the unexplored and to allow myself to go to places in me that I had never before let speak by investigating my agency from a much more layered and critical perspective. This was both incredibly terrifying and liberating and enabled me to discard the agentic ‘corset’ I had previously worn in my creative praxis. Dancyger and Rush confirm that “one of the things that happens when we break out of the restorative three-act form is that the effaced narrator becomes increasingly visible and overt” (38). I experienced an invigorating feeling of empowerment through my appropriation of the female gaze in the screenplay which initially appeased some of the post-crash turmoil and general sense of injustice I was experiencing. However, I soon, found something toxic rising inside of me. Like the acrimonious feminist cinema I was immersed in – Raw (Ducournau), A Girl Walks Home at Night (Amirpour), Romance (Breillat), Trouble Every Day (Denis), Baise-Moi (Despentes and Thi), In My Skin (Van), Anatomy of Hell (Breillat) – the screenplay I had produced involved a female character turning the tables on men and using acts of revenge to satisfy her needs. Not only was I creating a highly dystopian world filled with explicit themes of suffering in the screenplay, I too existed in a displaced state of rage and ‘psychic nausea’ in my daily life (Baldick and Sartre). I became haunted by vivid flashbacks of the car crash as abject images, sounds and sensations played over and over in my mind and body like a horror movie on loop. I struggled to find the necessary clarity and counterbalance of stability required to successfully handle this type of experimentation.I do not wish to undermine the creative potential of deconstructive practices, such as writing the body and militant cinema, for female filmmakers. However, I believe my post-trauma sensitivity to visceral entrapment and spiritual violence magnifies some of the psychological and physiological risks involved. Deconstructive experimentation “happens much more easily in the realm of “texts” than in the world of human interaction” (hooks 22) and presents agentic limitations for women since it offers a “utopian vision of female creativity” (Moi 119) that is “devoid of reality...except in a poetic sense” (Moi 122). In jettisoning the restorative qualities of narrative film, new boundaries for women are inadvertently created through restricting us to “intellectual pleasure but rarely emotional pleasure” (Citron 51). Moreover, by reducing women’s agency to retaliation we are denied the opportunity for catharsis and transformation; something I desperately longed to experience in my injured state. Kaplan acknowledges this problem, arguing that female filmmakers need to move theoretically beyond deconstruction to reconstruction, “to manipulate the recognized, dominating discourses so as to begin to free ourselves through rather than beyond them (for what is there ‘beyond’?)” (Women and Film 141).A potent desire to regain a sense of connectedness and control pushed itself out from deep inside me. I yearned for a tonic to move myself and my female character to an active position, rather than a reactive one that merely repeats the victimising dynamic of mainstream film by appropriating a reversed (female) gaze and now makes women the violent victors (Kaplan, Feminism and Film 130). We have arrived at a point where we must destabilise the dominance-submission structure and “think about ways of transcending a polarity that has only brought us all pain” (Kaplan, Feminism and Film 135). I became determined to write a screen narrative that, while dealing with some of the harsh realities of humanity I had become exposed to, involved an existentialist movement towards catharsis and activity.ReframingWhen our stories break down or no longer serve us well, it is imperative that we examine the quality of the stories we are telling and actively reinvent our accounts in ways that permit us to live more fulfilling lives.— Christine Kiesinger (107)I’m frightened by life’s randomness, so I want to deal with it, make some sense of it by telling a film story. But it’s not without hope. I don’t believe in telling stories without some hope.— Susanne Bier (Thomas)Narrative reframing is underlined by the existentialist belief that our spiritual freedom is an artistic process of self-creation, dependent on our free will to organise the elements of our lives, many determined out of our control, into the subjective frame that is to be our experience of our selves and the world around us (107). As a filmmaker, I recognise the power of selective editing and composition. Narrative reframing’s demand for a rational assessment of “the degree to which we live our stories versus the degree to which our stories live us” (Kiesinger 109), helped me to understand how I could use these filmmaking skills to take a step back from my trauma so as to look at it objectively “as a text for study” (Ellis 108) and to exercise power over the creative-destructive forces it, and the deconstructive writing methods I had employed, produced. Richardson confirms the benefits of this practice, since narrative “is the universal way in which humans accommodate to finitude” (Writing Strategies 65).In the script’s development, I found my resilience lay in my capacity to imagine more positive alternatives for female agency. I focussed on writing a narrative that did not avoid life’s hardships and injustices, or require them to be “attenuated, veiled, sweetened, blunted, and falsified” (Nietzsche and Hollingdale 68), yet still involved a life-affirming sentiment. With this in mind, I reintroduced the three-act structure in the revised script as its affectivity and therapeutic denouement enabled me to experience a sense of agentic catharsis that turned “nauseous thoughts into imaginations with which it is possible to live” (Nietzsche 52). Nevertheless, I remained vigilant not to lapse into didacticism; to allow my female character to be free to transgress social conventions surrounding women’s agency. Indebted to Kaplan’s writing on the cinematic gaze, I chose to take up what she identifies as a ‘mutual gaze’; an ethical framework that enabled me to privilege the female character’s perspective and autonomy with a neutral subject-subject gaze rather than the “subject-object kind that reduces one of the parties to the place of submission” (Feminism and Film 135). I incorporated the filmic technique of the point of view (POV) shot for key narrative moments as it allows an audience to literally view the world through a character’s eyes, as well as direct address, which involves the character looking back down the lens at the viewer (us); establishing the highest level of identification between the spectator and the subject on screen.The most pertinent illustration of these significant scriptwriting changes through my engagement with narrative reframing and feminist film theory, is in the reworking of my family’s car crash which became a pivotal turning point in the final draft. In the scene, I use POV and direct address to turn the weaponised gaze back around onto the ‘paparazzi’ who are filming the spectacle. When the central (pregnant) character frees herself from the wreckage, she notices these men filming her and we see the moment from her point of view as she looks at these men laughing and revelling in the commercial potential of their mediatised act. Switching between POV and direct address, the men soon notice they have been exposed as the woman looks back down the lens at them (us) with disbelief, reproaching them (us) for daring to film her in this traumatic moment. She holds her determined gaze while they glance awkwardly back at her, until their laughter dissipates, they stop recording and appear to recognise the culpability of their actions. With these techniques of mutual gazing, I set out to humanise and empower the female victim and neutralise the power dynamic: the woman is now also a viewing agent, and the men equally perform the role of the viewed. In this creative reframing, I hope to provide an antidote to filmic violence against and/or by women as this female character reclaims her (my) experience of survival without adhering to the culture of female passivity or ressentiment.This article has examined how a serious car crash, being filmed against my will in its aftermath and the attendant damages that prevailed from this experience, catalysed a critical change of direction in my scriptwriting. The victimising event helped me recognise the manifest and latent forms of violence against women that are normalised through everyday ideological and institutional systems in film and prevent us from performing as active agents in our creative praxis. There is a critical need for more inclusive modes of practice – across the film industry, discourse and pedagogy – that are cognisant and respectful of women’s specificity and our difference to the androcentric landscape of mainstream film. We need to continue to exert pressure on changing violent mechanisms that marginalise us and ghettoise our stories. As this article has demonstrated, working outside dominant forms can enable important emancipatory opportunities for women, however, this type or deconstruction also presents risks that generally leave us powerless in everyday spaces. While I advocate that female filmmakers should look to techniques of feminist cinema for an alternative lens, we must also work within popular film to critique and subvert it, and not deny women the pleasures and political advantages of its restorative structure. By enabling female filmmakers to (re)humanise woman though encouraging empathy and compassion, this affective storytelling form has the potential to counter violence against women and mobilise female agency. Equally, CAP ethnography and narrative reframing are critical discourses for the retrieval and actualisation of female filmmakers’ agency as they allow us to contextualise our stories of resistance and survival within the framework of a larger picture of violence to gain perspective on our subjective experiences and render them as significant, informative and useful to the lives of others. This enables us to move from the isolated margins of subcultural film and discourse to reclaim our stories at the centre.ReferencesA Girl Walks Home at Night. Dir. Ana Lily Amirpour. Say Ahh Productions, 2014.Anatomy of Hell. Dir. Catherine Breillat. Tartan Films, 2004. Baise-Moi. Dirs. Virginie Despentes and Coralie Trinh Thi. FilmFixx, 2000.Baldick, Robert, and Jean-Paul Sartre. Nausea. Harmondsworth: Penguin Books, 1965.Bettelheim, Bruno. The Uses of Enchantment: The Meaning and Importance of Fairy Tales. London: Thames and Hudson, 1976.Citron, Michelle. Women’s Film Production: Going Mainstream in Female Spectators: Looking at Film and Television. Ed. E. Deidre Pribram. London: Verso, 1988.Cixous, Helene. “The Laugh of the Medusa.” Signs: Journal of Women in Culture and Society 1.4 (1976): 875-893.Cixous, Helene, and Deborah Jenson. "Coming to Writing" and Other Essays. Cambridge, Mass.: Harvard University Press, 1991.Dancyger, Ken, and Jeff Rush. Alternative Scriptwriting: Successfully Breaking the Rules. Boston, MA: Focal Press, 2002.De Lauretis, Teresa. Alice Doesn't: Feminism, Semiotics, Cinema. Bloomington: Indiana University Press, 1984.Dyer, Richard. The Matter of Images: Essays on Representation. 2nd ed. London: Routledge, 2002.Ellis, Carolyn. The Ethnographic I: A Methodological Novel about Autoethnography. California: AltaMira, 2004.Filming Desire: A Journey through Women's Cinema. Dir. Marie Mandy. Women Make Movies, 2000.Gillain, Anne. “Profile of a Filmmaker: Catherine Breillat.” Beyond French Feminisms: Debates on Women, Politics, and Culture in France, 1981-2001. Eds. Roger Célestin, Eliane Françoise DalMolin, and Isabelle de Courtivron. New York: Palgrave Macmillan, 2003. 206.Herman, Judith Lewis. Trauma and Recovery. London: Pandora, 1994.Homer, Sean. Jacques Lacan. London: Routledge, 2005.hooks, bell. Yearning: Race, Gender, and Cultural Politics. Boston, MA: South End Press, 1990.In My Skin. Dir. Marina de Van. Wellspring Media, 2002. Kaplan, E. Ann. Women and Film: Both Sides of the Camera. New York: Routledge, 1988.———. Feminism and Film. Oxford: Oxford University Press, 2000.Kiesinger, Christine E. “My Father's Shoes: The Therapeutic Value of Narrative Reframing.” Ethnographically Speaking: Autoethnography, Literature, and Aesthetics. Eds. Arthur P. Bochner and Carolyn Ellis. Walnut Creek, CA: AltaMira Press, 2002. 107-111.Lauzen, Martha M. “Thumbs Down - Representation of Women Film Critics in the Top 100 U.S. Daily Newspapers - A Study by Dr. Martha Lauzen.” Alliance of Women Film Journalists, 25 July 2012. 4-5.———. The Celluloid Ceiling: Behind-the-Scenes Employment of Women on the Top 100, 250, and 500 Films of 2018. Center for the Study of Women in Television and Film San Diego State University 2019. <https://womenintvfilm.sdsu.edu/wp-content/uploads/2019/01/2018_Celluloid_Ceiling_Report.pdf>.Mansfield, Nick. Subjectivity: Theories of the Self from Freud to Haraway. St Leonards, NSW: Allen & Unwin, 2000.Moi, Toril. Sexual/Textual Politics: Feminist Literary Theory. London: Methuen, 2002.Mulvey, Laura. Visual Pleasure and Narrative Cinema in Feminism and Film. Ed. E. Ann Kaplan. New York: Oxford University Press, 1975. 34-47.Nietzsche, Friedrich W. The Birth of Tragedy and the Genealogy of Morals. Trans. Francis Golffing. New York: Doubleday, 1956.Nietzsche, Friedrich W., and Richard Hollingdale. Beyond Good and Evil. London: Penguin Books, 1990.Raw. Dir. Julia Ducournau. Petit Film, 2016.Richardson, Laurel. Writing Strategies: Reaching Diverse Audiences. Newbury Park, California: Sage Publications, 1990.———. Fields of Play: Constructing an Academic Life. New Brunswick, N.J.: Rutgers University Press, 1997.———. “Writing: A Method of Inquiry.” Handbook of Qualitative Research. Eds. Norman K Denzin and Yvonna S. Lincoln. Thousand Oaks, CA: Sage Publications, 2000.Romance. Dir. Catherine Breillat. Trimark Pictures Inc., 2000.Sartre, Jean-Paul. Being and Nothingness: An Essay on Phenomenological Ontology. London: Routledge, 1969.Sexton-Finck, Larissa. Be(com)ing Reel Independent Woman: An Autoethnographic Journey through Female Subjectivity and Agency in Contemporary Cinema with Particular Reference to Independent Scriptwriting Practice. 2009. <https://researchrepository.murdoch.edu.au/id/eprint/1688/2/02Whole.pdf>.Smelik, Anneke. And the Mirror Cracked: Feminist Cinema and Film Theory. New York: St. Martin's Press, 1998.Smith, Hazel. The Writing Experiment: Strategies for Innovative Creative Writing. Crows Nest, NSW: Allen & Unwin, 2005.Thomas, Michelle. “10 Years of Dogme: An Interview with Susanne Bier.” Future Movies, 5 Aug. 2005. <http://www.futuremovies.co.uk/filmmaking.asp?ID=119>.Trouble Every Day. Dir. Claire Denis. Wild Bunch, 2001. Zemler, Mily. “17 Actresses Who Started Their Own Production Companies.” Elle, 11 Jan. 2018. <https://www.elle.com/culture/movies-tv/g14927338/17-actresses-with-production-companies/>.

APA, Harvard, Vancouver, ISO, and other styles

Abstract:

BackgroundIn the past twenty years the discourse of the weight-centred health paradigm (WCHP) has attained almost complete dominance in the sphere of public health policy throughout the developed English speaking world. The national governments of Australia and many countries around the world have responded to what is perceived as an ‘epidemic of obesity’ with public health policies and programs explicitly focused on reducing and preventing obesity through so called ‘lifestyle’ behaviour change. Weight-related public health initiatives have been subjected to extensive critique based on ideological, ethical and empirical grounds (Solovay; Oliver; Gaesser; Gard; Monaghan, Colls and Evans; Wright; Rothblum and Solovay; Saguy; Rich, Monaghan and Aphramor; Bacon and Aphramor; Brown). Many scholars have raised concerns about the stigmatising and harmful effects of the WCHP (Aphramor; Bacon and Aphramor; O'Dea; Tylka et al.), and in particular the inequitable distribution of such negative impacts on women, people who are poor, and people of colour (Campos). Weight-based stigma is now well recognised as a pervasive and insidious form of stigma (Puhl and Heuer). Weight-based discrimination (a direct result of stigma) in the USA has a similar prevalence rate to race-based discrimination, and discrimination for fatter and younger people in particular is even higher (Puhl, Andreyeva and Brownell). Numerous scholars have highlighted the stigmatising discourse evident in obesity prevention programs and policies (O'Reilly and Sixsmith; Pederson et al.; Nuffield Council on Bioethics; ten Have et al.; MacLean et al.; Carter, Klinner, et al.; Fry; O'Dea; Rich, Monaghan and Aphramor). The ‘war on obesity’ can therefore be regarded as a social determinant of poor health (O'Hara and Gregg). Focusing on overweight and obese people is not only damaging to people’s health, but is ineffective in addressing the broader social and economic issues that create health and wellbeing (Cohen, Perales and Steadman; MacLean et al.; Walls et al.). Analyses of the discourses used in weight-related public health initiatives have highlighted oppressive, stigmatizing and discriminatory discourses that position body weight as pathological (O'Reilly; Pederson et al.), anti-social and a threat to the viable future of society (White). There has been limited analysis of discourses in Australian social marketing campaigns focused on body weight (Lupton; Carter, Rychetnik, et al.).Social Marketing CampaignsIn 2006 the Australian, State and Territory Governments funded the Measure Up social marketing campaign (Australian Government Department of Health and Ageing "Measure Up"). As the name suggests Measure Up focuses on the measurement of health through body weight and waist circumference. Campaign resources include brochures, posters, a tape measure, a 12 week planner, a community guide and a television advertisem*nt. Campaign slogans are ‘The more you gain, the more you have to lose’ and ‘How do you measure up?’Tomorrow People is the component of Measure Up designed for Indigenous Australians (Australian Government Department of Health and Ageing "Tomorrow People"). Tomorrow People resources focus on healthy eating and physical activity and include a microsite on the Measure Up website, booklet, posters, print and radio advertisem*nts. The campaign slogan is ‘Tomorrow People starts today. Do it for our kids. Do it for our culture.’ In 2011, phase two of the Measure Up campaign was launched (Australian Government Department of Health and Ageing "Swap It, Don't Stop It"). The central premise of Swap It, Don’t Stop It is that you ‘can lose your belly without losing all the things you love’ by making ‘simple’ swaps of behaviours related to eating and physical activity. The campaign’s central character Eric is made from a balloon, as are all of the other characters and visual items used in the campaign. Eric claims thatover the years my belly has ballooned and ballooned. It’s come time to do something about it — the last thing I want is to end up with some cancers, type 2 diabetes and heart disease. That’s why I’ve become a Swapper! What’s a swapper? It’s simple really. It just means swapping some of the things I’m doing now for healthier choices. That way I can lose my belly, without losing all the things I love. It’s easy! The campaign has produced around 30 branded resource items including brochures, posters, cards, fact sheets, recipes, and print, radio, television and online advertisem*nts. All resources include references to Eric and most also include the image of the tape measure used in the Measure Up campaign. The Swap It, Don’t Stop It campaign also includes resources specifically directed at Indigenous Australians including two posters from the generic campaign with a dot painting motif added to the background. MethodologyThe epistemological position in this project was constructivist (Crotty) and the theoretical perspective was critical theory (Crotty). Multimedia critical discourse analysis (Machin and Mayr) was the methodology used to examine the social marketing campaigns and identify the discourses within them. Critical discourse analysis (CDA) focuses on critiquing text for evidence of power and ideology. CDA is used to reveal the ideas, absences and assumptions, and therefore the power interests buried within texts, in order to bring about social change. As a method, CDA has a structured three dimensional approach involving textual practice analysis (for lexicon) at the core, within the context of discursive practice analysis (for rhetorical and lexical strategies particularly with respect to claims-making), which falls within the context of social practice analysis (Jacobs). Social practice analysis explores the role played by power and ideology in supporting or disturbing the discourse (Jacobs; Machin and Mayr). Multimodal CDA (MCDA) uses a broad definition of text to include words, pictures, symbols, ideas, themes or any message that can be communicated (Machin and Mayr). Analysis of the social marketing campaigns involved examining the vocabulary, grammar, sentence structure, visuals and overall structure of the text for textual, discursive and social practices.Results and DiscussionIndividual ResponsibilityThe discourse of individual responsibility is strongly evident in the campaigns. In this discourse, it is ultimately the individual who is held responsible for their body weight and their health. The individual responsibility discourse is signified by the discursive practice of using epistemic (related to the truth or certainty) and deontic (compelling or instructing) modality words, particularly modal verbs and modal adverbs. High modality epistemic words are used to convince the reader of the certainty of statements and to portray the statement-maker as authoritative. High modality deontic words are used to instil power and authority in the instructions.The extensive use of high modality epistemic and deontic words is demonstrated in the following paragraph assembled from various campaign materials: Ultimately (epistemic modality adverb) individuals must take responsibility (deontic modality verb) for their own health, including their and weight. Obesity is caused (epistemic modality verb) by an imbalance in energy intake (from diet) (epistemic modality verb) and expenditure (from activity) (epistemic modality verb). Individually (epistemic modality adverb) we make decisions (epistemic modality verb) about how much we eat (epistemic modality verb) and how much activity we undertake (epistemic modality verb). Each of us can control (epistemic modality) our own weight by controlling (deontic modality) what we eat (deontic modality verb) and how much we exercise (deontic modality verb). To correct (deontic modality verb) the energy imbalance, individuals need to develop (deontic modality verb) a healthy lifestyle by making changes (deontic modality verb) to correct (deontic modality verb) their dietary habits and increase (deontic modality verb) their activity levels. The verbs must, control, correct, develop, change, increase, eat and exercise are deontic modality verbs designed to instruct or compel the reader.These discursive practices result in the clear message that individuals can and must control, correct and change their eating and physical activity, and thereby control their weight and health. The implication of the individualist discourse is that individuals, irrespective of their genes, life-course, social position or environment, are charged with the responsibility of being more self-surveying, self-policing, self-disciplined and self-controlled, and therefore healthier. This is consistent with the individualist orientation of neoliberal ideology, and has been identified in various critiques of obesity prevention public health programs that centralise the self-responsible subject (Murray; Rich, Monaghan and Aphramor) and the concept of ‘healthism’, the moral obligation to pursue health through healthy behaviours or healthy lifestyles (Aphramor and Gingras; Mansfield and Rich). The hegemonic Western-centric individualist discourse has also been critiqued for its role in subordinating or silencing other models of health and wellbeing including Aboriginal or indigenous models, that do not place the individual in the centre (McPhail-Bell, Fredericks and Brough).Obesity Causes DiseaseEpistemic modality verbs are used as a discursive practice to portray the certainty or probability of the relationship between obesity and chronic disease. The strength of the epistemic modality verbs is generally moderate, with terms such as ‘linked’, ‘associated’, ‘connected’, ‘related’ and ‘contributes to’ most commonly used to describe the relationship. The use of such verbs may suggest recognition of uncertainty or at least lack of causality in the relationship. However this lowered modality is counterbalanced by the use of verbs with higher epistemic modality such as ‘causes’, ‘leads to’, and ‘is responsible for’. For example:The other type is intra-abdominal fat. This is the fat that coats our organs and causes the most concern. Even though we don’t yet fully understand what links intra-abdominal fat with chronic disease, we do know that even a small deposit of this fat increases the risk of serious health problems’. (Swap It, Don’t Stop It Website; italics added)Thus the prevailing impression is that there is an objective, definitive, causal relationship between obesity and a range of chronic diseases. The obesity-chronic disease discourse is reified through the discursive practice of claims-making, whereby statements related to the problem of obesity and its relationship with chronic disease are attributed to authoritative experts or expert organisations. The textual practice of presupposition is evident with the implied causal relationship between obesity and chronic disease being taken for granted and uncontested. Through the textual practice of lexical absence, there is a complete lack of alternative views about body weight and health. Likewise there is an absence of acknowledgement of the potential harms arising from focusing on body weight, such as increased body dissatisfaction, disordered eating, and, paradoxically, weight gain.Shame and BlameBoth Measure Up and Swap It, Don’t Stop It include a combination of written/verbal text and visual images that create a sense of shame and blame. In Measure Up, the central character starts out as young, slim man, and as he ages his waist circumference grows. When he learns that his expanding waistline is associated with an increased risk of chronic disease, his facial expression and body language convey that he is sad, dejected and fearful. In the still images, this character and a female character are positioned looking down at the tape measure as they measure their ‘too large’ waists. This position and the looks on their faces suggest hanging their heads in shame. The male characters in both campaigns specifically express shame about “letting themselves go” by unthinkingly practicing ‘unhealthy’ behaviours. The characters’ clothing also contribute to a sense of shame. Both male and female characters in Measure Up appear in their underwear, which suggests that they are being publicly shamed. The clothing of the Measure Up characters is similar to that worn by contestants in the television program The Biggest Loser, which explicitly uses shame to ‘motivate’ contestants to lose weight. Part of the public shaming of contestants involves their appearance in revealing exercise clothing for weigh-ins, which displays their fatness for all to see (Thomas, Hyde and Komesaroff). The stigmatising effects of this and other aspects of the Biggest Loser television program are well documented (Berry et al.; Domoff et al.; Sender and Sullivan; Thomas, Hyde and Komesaroff; Yoo). The appearance of the Measure Up characters in their underwear combined with their head position and facial expressions conveys a strong, consistent message that the characters both feel shame and are deserving of shame due to their self-inflicted ‘unhealthy’ behaviours. The focus on ‘healthy’ and ‘unhealthy’ behaviours contributes to accepted and contested health identities (Fry). The ‘accepted health identity’ is represented as responsible and aspiring to and pursuing good health. The ‘contested health identity’ is represented as unhealthy, consuming too much food, and taking health risks, and this identity is stigmatised by public health programs (Fry). The ‘contested health identity’ represents the application to public health of Goffman’s ‘spoiled identity’ on which much stigmatisation theorising and research has been based (Goffman). As a result of both lexical and visual textual practices, the social marketing campaigns contribute to the construction of the ‘accepted health identity’ through discourses of individual responsibility, choice and healthy lifestyle. Furthermore, they contribute to the construction of the spoiled or ‘contested health identity’ through discourses that people are naturally unhealthy and need to be frightened, guilted and shamed into stopping ‘unhealthy’ behaviours and adopting ‘healthy’ behaviours. The ‘contested health identity’ constructed through these discourses is in turn stigmatised by such discourses. Thus the campaigns not only risk perpetuating stigmatisation through the reinforcement of the health identities, but possibly extend it further by legitimising the stigma associated with such identities. Given that these campaigns are conducted by the Australian Government, the already deeply stigmatising social belief system receives a significant boost in legitimacy by being positioned as a public health belief system perpetrated by the Government. Fear and AlarmIn the Measure Up television advertisem*nt the main male character’s daughter, who has run into the frame, abruptly stops and looks fearful when she hears about his increased risk of disease. Using the discursive practice of claims-making, the authoritative external source informs the man that the more he gains (in terms of his waist circumference), the more he has to lose. The clear implication is that he needs to be fearful of losing his health, his family and even his life if he doesn’t reduce his waist circumference. The visual metaphor of a balloon is used as the central semiotic trope in Swap It, Don’t Stop It. The characters and other items featuring in the visuals are all made from twisting balloons. Balloons themselves may not create fear or alarm, unless one is unfortunate to be afflicted with globophobia (Freed), but the visual metaphor of the balloon in the social marketing campaign had a range of alarmist meanings. At the population level, rates and/or costs of obesity have been described in news items as ‘ballooning’ (Body Ecology; Stipp; AFP; Thien and Begawan) with accompanying visual images of extremely well-rounded bodies or ‘headless fatties’ (Cooper). Rapid or significant weight gain is referred to in everyday language as ‘ballooning weight’. The use of the balloon metaphor as a visual device in Swap It, Don’t Stop It serves to reinforce and extend these alarmist messages. Further, there is no attempt in the campaigns to reduce alarm by including positive or neutral photographs or images of fat people. This visual semiotic absence – a form of cultural imperialism (Young) – contributes to the invisibilisation of ‘real life’ fat people who are not ashamed of themselves. Habermas suggests that society evolves and operationalises through rational communication which includes the capacity to question the validity of claims made within communicative action (Habermas The Structural Transformation of the Public Sphere; Habermas The Theory of Communicative Action: Reason and the Rationalisation of Society). However the communicative action taken by the social marketing campaigns analysed in this study presents claims as uncontested facts and is therefore directorial about the expectations of individuals to take more responsibility for themselves, adopt certain behaviours and reduce or prevent obesity. Habermas argues that the lack or distortion of rational communication erodes relationships at the individual and societal levels (Habermas The Theory of Communicative Action: Reason and the Rationalisation of Society; Habermas The Structural Transformation of the Public Sphere). The communicative actions represented by the social marketing campaigns represents a distortion of rational communication and therefore erodes the wellbeing of individuals (for example through internalised stigma, shame, guilt, body dissatisfaction, weight preoccupation, disordered eating and avoidance of health care), relationships between individuals (for example through increased blame, coercion, stigma, bias, prejudice and discrimination) and society (for example through stigmatisation of groups in the population on the basis of their body size and increased social and health inequity). Habermas proposes that power differentials work to distort rational communication, and that it is these distortions in communication that need to be the focal point for change (Habermas The Theory of Communicative Action: Reason and the Rationalisation of Society; Habermas The Theory of Communicative Action: The Critique of Functionalist Reason; Habermas The Structural Transformation of the Public Sphere). Through critical analysis of the discourses used in the social marketing campaigns, we identified that they rely on the power, authority and status of experts to present uncontested representations of body weight and ‘appropriate’ health responses to it. In identifying the discourses present in the social marketing campaigns, we hope to focus attention on and thereby disrupt the distortions in the practical knowledge of the weight-centred health paradigm in order to contribute to systemic reorientation and change.ConclusionThrough the use of textual, discursive and social practices, the social marketing campaigns analysed in this study perpetuate the following concepts: everyone should be alarmed about growing waistlines and ‘ballooning’ rates of ‘obesity’; individuals are to blame for excess body weight, due to ignorance and the practice of ‘unhealthy behaviours’; individuals have a moral, parental, familial and cultural responsibility to monitor their weight and adopt ‘healthy’ eating and physical activity behaviours; such behaviour changes are easy to make and will result in weight loss, which will reduce risk of disease. These paternalistic campaigns evoke feelings of personal and parental guilt and shame, resulting in coercion to ‘take action’. They simultaneously stigmatise fat people yet serve to invisibilise them. Public health agencies must consider the harmful consequences of social marketing campaigns focused on body weight.ReferencesAFP. "A Ballooning Health Issue around the World." Gulfnews.com 29 May 2013. 17 Sep. 2013 ‹http://gulfnews.com/news/world/other-world/a-ballooning-health-issue-around-the-world-1.1189899›.Aphramor, Lucy. "The Impact of a Weight-Centred Treatment Approach on Women's Health and Health-Seeking Behaviours." Journal of Critical Dietetics 1.2 (2012): 3-12.Aphramor, Lucy, and Jacqui Gingras. "That Remains to Be Said: Disappeared Feminist Discourses on Fat in Dietetic Theory and Practice." The Fat Studies Reader, eds. Esther Rothblum and Sondra Solovay. New York: New York University Press, 2009. 97-105. Australian Government Department of Health and Ageing. "Measure Up." 2010. 3 Aug. 2011 ‹https://web.archive.org/web/20110817065823/http://www.measureup.gov.au/internet/abhi/publishing.nsf/Content/About+the+campaign-lp›.———. "Swap It, Don't Stop It." 2011. 20 Aug. 2011 ‹https://web.archive.org/web/20110830084149/http://swapit.gov.au›.———. "Tomorrow People." 2010. 3 Aug. 2011 ‹https://web.archive.org/web/20110821140445/http://www.measureup.gov.au/internet/abhi/publishing.nsf/Content/tp_home›.Bacon, Linda, and Lucy Aphramor. "Weight Science: Evaluating the Evidence for a Paradigm Shift." Nutrition Journal 10.9 (2011). Bacon, Linda, and Lucy Aphramor. Body Respect: What Conventional Health Books Get Wrong, Leave Out, and Just Plain Fail to Understand about Weight. Dallas: BenBella Books, 2014. Berry, Tanya R., et al. "Effects of Biggest Loser Exercise Depictions on Exercise-Related Attitudes." American Journal of Health Behavior 37.1 (2013): 96-103. Body Ecology. "Obesity Rates Ballooning – Here's What You Really Need to Know to Lose Weight and Keep It Off." 2009. 9 Jun. 2011 ‹http://bodyecology.com/articles/obesity-rates-ballooning.php›.Brown, Harriet. Body of Truth: How Science, History and Culture Drive Our Obsession with Weight – and What We Can Do about It. Boston: Da Capo Press, 2015. Campos, Paul. The Obesity Myth. New York: Gotham Books, 2004. Carter, Stacy M., et al. "The Ethical Commitments of Health Promotion Practitioners: An Empirical Study from New South Wales, Australia." Public Health Ethics 5.2 (2012): 128-39. Carter, Stacy M., et al. "Evidence, Ethics, and Values: A Framework for Health Promotion." American Journal of Public Health 101.3 (2011): 465-72. Cohen, Larry, Daniel P. Perales, and Catherine Steadman. "The O Word: Why the Focus on Obesity Is Harmful to Community Health." Californian Journal of Health Promotion 3.3 (2005): 154-61. Cooper, Charlotte. "Olympics/Uhlympics: Living in the Shadow of the Beast." thirdspace: a journal of feminist theory & culture 9.2 (2010). Crotty, Michael. The Foundations of Social Research: Meaning and Perspective in the Research Process. 1st ed. Crows Nest: Allen and Unwin, 1998. Domoff, Sarah E., et al. "The Effects of Reality Television on Weight Bias: An Examination of the Biggest Loser." Obesity 20.5 (2012): 993-98. Freed, Megan. "Uncommon Phobias: The Fear of Balloons." Yahoo Voices 2007. 17 Sep. 2013 ‹http://voices.yahoo.com/uncommon-phobias-fear-balloons-338043.html›.Fry, Craig L. "Ethical Issues in Obesity Interventions for Populations." New South Wales Public Health Bulletin 23.5-6 (2012): 116-19. Gaesser, Glenn A. "Is It Necessary to Be Thin to Be Healthy?" Harvard Health Policy Review 4.2 (2003): 40-47. Gard, Michael. The End of the Obesity Epidemic. Oxon: Routledge, 2011. Goffman, E. Stigma: Notes on the Management of Spoiled Identity. Englewood Cliffs, NJ: Prentice Hall, 1963.Habermas, Jürgen. The Theory of Communicative Action: Reason and the Rationalisation of Society. Vol. 1. Cambridge: Polity Press, 2004. ———. The Theory of Communicative Action: The Critique of Functionalist Reason. Vol. 2. Cambridge: Polity Press, 2004.———. The Structural Transformation of the Public Sphere. Cambridge: Polity Press, 2002.Jacobs, Keith. "Discourse Analysis." Social Research Methods: An Australian Perspective, ed. Maggie Walter. South Melbourne, Vic.: Oxford University Press, 2006. Lupton, Deborah. "'How Do You Measure Up?' Assumptions about 'Obesity' and Health-Related Behaviors and Beliefs in Two Australian 'Obesity' Prevention Campaigns." Fat Studies 3.1 (2014): 32-44. Machin, David, and Andrea Mayr. How to Do Critical Discourse Analysis: A Multimodal Introduction. London: Sage Publications 2012. MacLean, Lynne, et al. "Obesity, Stigma and Public Health Planning." Health Promotion International 24.1 (2009): 88-93. Mansfield, Louise, and Emma Rich. "Public Health Pedagogy, Border Crossings and Physical Activity at Every Size." Critical Public Health 23.3 (2013): 356-70. McPhail-Bell, Karen, Bronwyn Fredericks, and Mark Brough. "Beyond the Accolades: A Postcolonial Critique of the Foundations of the Ottawa Charter." Global Health Promotion 20.2 (2013): 22-29. Monaghan, Lee F., Rachel Colls, and Bethan Evans. "Obesity Discourse and Fat Politics: Research, Critique and Interventions." Critical Public Health 23.3 (2013): 249-62. Murray, Samantha. The 'Fat' Female Body. London: Palgrave Macmillan, 2008. Nuffield Council on Bioethics. Public Health: Ethical Issues. London: Nuffield Council on Bioethics, 2007. O'Dea, Jennifer A. "Prevention of Child Obesity: 'First, Do No Harm'." Health Education Research 20.2 (2005): 259-65. O'Hara, Lily, and Jane Gregg. "The War on Obesity: A Social Determinant of Health." Health Promotion Journal of Australia 17.3 (2006): 260-63. O'Reilly, Caitlin. "Weighing In on the Health and Ethical Implications of British Columbia's Weight Centered Health Paradigm." Simon Fraser University, 2011. O'Reilly, Caitlin, and Judith Sixsmith. "From Theory to Policy: Reducing Harms Associated with the Weight-Centered Health Paradigm." Fat Studies 1.1 (2012): 97-113. Oliver, J. "The Politics of Pathology: How Obesity Became an Epidemic Disease." Perspectives in Biology and Medicine 49.4 (2006): 611-27. Pederson, A., et al., eds. Rethinking Women and Healthy Living in Canada. Vancouver, BC: British Columbia Centre of Excellence for Women's Health, 2013. Puhl, Rebecca, and Chelsea Heuer. "Obesity Stigma: Important Considerations for Public Health." American Journal of Public Health 100.6 (2010): 1019. Puhl, Rebecca M., T. Andreyeva, and Kelly D. Brownell. "Perceptions of Weight Discrimination: Prevalence and Comparison to Race and Gender Discrimination in America." International Journal of Obesity 32 (2008): 992-1000.Rich, Emma, Lee Monaghan, and Lucy Aphramor, eds. Debating Obesity: Critical Perspectives. Basingstoke: Palgrave MacMillan, 2011. Rothblum, Esther, and Sondra Solovay, eds. The Fat Studies Reader. New York: New York University Press, 2009. Saguy, Abigail. What's Wrong with Fat? New York: Oxford University Press, 2013.Sender, Katherine, and Margaret Sullivan. "Epidemics of Will, Failures of Self-Esteem: Responding to Fat Bodies in The Biggest Loser and What Not to Wear." Continuum 22.4 (2008): 573-84. Solovay, Sondra. Tipping the Scales of Justice: Fighting Weight-Based Discrimination. New York: Prometheus Books, 2000.Stipp, David. "Obesity — Not Aging — Balloons Health Care Costs." Pacific Standard 2011. 17 Sep. 2013 ‹http://www.psmag.com/health/obesity-aging-cause-ballooning-health-care-costs-31879/›.Ten Have, M., et al. "Ethics and Prevention of Overweight and Obesity: An Inventory." Obesity Reviews 12.9 (2011): 669-79. Thien, Rachel, and Bandar Seri Begawan. "Obesity Balloons among Brunei Students." The Brunei Times 2010. 17 Sep. 2013 ‹http://www.bt.com.bn/news-national/2010/02/10/obesity-balloons-among-brunei-students›.Thomas, Samantha, Jim Hyde, and Paul Komesaroff. "'Cheapening the Struggle:' Obese People's Attitudes towards the Biggest Loser." Obesity Management 3.5 (2007): 210-15. Tylka, Tracy L., et al. "The Weight-Inclusive versus Weight-Normative Approach to Health: Evaluating the Evidence for Prioritizing Well-Being over Weight Loss." Journal of Obesity (2014): 18. Article ID 983495.Walls, Helen, et al. "Public Health Campaigns and Obesity – A Critique." BMC Public Health 11.1 (2011): 136. White, Francis Ray. "Fat, Queer, Dead: ‘Obesity’ and the Death Drive." Somatechnics 2.1 (2012): 1-17. Wright, Jan. "Biopower, Biopedagogies and the Obesity Epidemic." Biopolitics and the ‘Obesity Epidemic’: Governing Bodies. Ed. Jan Wright and Valerie Harwood. New York: Routledge, 2009. 1-14.Yoo, Jina H. "No Clear Winner: Effects of the Biggest Loser on the Stigmatization of Obese Persons." Health Communication 28.3 (2013): 294-303. Young, Iris Marion. "Five Faces of Oppression." The Philosophical Forum 19.4 (1988): 270-90.