92 resultados para Metaphors on Vision


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The medical profession ascribes otherness to people with disabilities through diagnosis and expertism, which sets in motion discursive powers that oversee their exclusion through schooling and beyond. In this paper, I present a narrative pieced together from personal experiences of ducking and weaving the deficit discourse in ‘inclusive’ education, when seeking employment and in day-to-day family interaction as a person with severely impaired vision. This work builds on previous qualitative research I conducted in Queensland, Australia with a group of young people with impaired vision who attended an inclusive secondary school. I frame this discussion using Foucault’s conception of normalising judgement against the hegemony of normalcy, and consider that inclusion for people with disabilities is reminiscent of a haunting. Through this analysis, I demonstrate how my ideology is formed, and how it in turn shapes a research agenda geared toward seeking greater inclusion for young people with disabilities in schools.

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In this paper, I report core findings of a small-scale qualitative study that I conducted with a group of young people with vision impairment who attended an inclusive secondary school in the Australian state of Queensland. My objective was to capture their voiced experiences of their schooling through face-to-face interviews and to develop a substantive theory that was grounded in the collected data. Relevant to the study was my status as an insider researcher, which impacted both data collection and analysis. Here, I develop the methodological process that I followed and present core findings of the study. These findings shed light on the practices within schools that are designed to promote inclusion yet perpetuate exclusion for students with impaired vision.

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What is it to see the world, other people, and imagined situations not just as morally compelling, but as making personal demands of us? What is it to experience stories as speaking to us individually and directly? Kierkegaard's Mirrors explores Kierkegaard's unique and challenging answers to these questions. Beginning with the structural account of consciousness offered in Johannes Climacus, this book develops a new phenomenological interpretation of what Kierkegaard calls 'interest': a self-reflexive mode of thought, vision and imagination that plays a central role in moral experience. Tracing this concept across Kierkegaard's work takes us through topics such as consciousness, the ontology of selfhood, ethical imagination, admiration and imitation, seeing the other, metaphors of self-recognition and mirroring, our need for transcendent meaning, and the relationship between scholarship and subjective knowledge. 'Interest' equips us with a new understanding of Kierkegaard's highly original normative, teleological account of moral vision.

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To investigate the contribution of matrix degradation in the two-layer avian sclera to the development of myopia. Tissue inhibitor of metalloproteinase-2 (TIMP-2) was used to inhibit chick scleral collagen degradation with (3)H-proline, a marker for this effect. Ex vivo scleral culture experiments confirmed TIMP-2 doses for in vivo experimentation. Ocular growth and refractive response to exogenous TIMP-2 (11.25, 2.25, and 0.45 picomoles, plus vehicle only) were monitored in 7-day-old chicks during the induction of myopia over 4 days with a translucent occluder. Collagen degradation was assessed, in whole sclera and in separated scleral layers by using the same paradigm (11.25 picomoles TIMP-2; vehicle only).Approximately 60% of collagen degradation was inhibited with low (2 nM) doses of TIMP-2 in the ex vivo sclera. Degradative activity in the in vivo chick sclera increased significantly (46%) during myopia development, with all the altered activity confined to the fibrous layer. Addition of TIMP-2 significantly reduced (by 46%) this accelerated scleral collagen degradation, also by acting in the fibrous layer. TIMP-2 had no significant effect on (3)H-proline incorporated in the cartilaginous scleral layer and cornea. Despite inhibiting collagen degradation TIMP-2 had no significant effect on myopia development. Increased collagen degradation is a feature of scleral remodeling in chick myopia development, but is confined to the fibrous scleral layer. Significant inhibition of this collagenolytic activity with TIMP-2 has little effect on refractive error development, suggesting that collagen degradation in the sclera contributes little to the development of myopia in the chick.

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The goal of this report is to review previously published clinical trials addressing contact lens discomfort (CLD) to identify appropriate trial design and outcome parameters to guide future clinical research that will characterize and investigate possible causes of CLD. A further goal is to identify possible confounding features of clinical trial design and performance in order to reduce bias in conduct of future trials or analysis of data from those trials.

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This chapter focuses on both the fiction of Patrick White and the connections between sacredness and violence.

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The aim of children's vision screenings is to detect visual problems that are common in this age category through valid and reliable tests. Nevertheless, the cost effectiveness of paediatric vision screenings, the nature of the tests included in the screening batteries and the ideal screening age has been the cause of much debate in Australia and worldwide. Therefore, the purpose of this review is to report on the current practice of children's vision screenings in Australia and other countries, as well as to evaluate the evidence for and against the provision of such screenings. This was undertaken through a detailed investigation of peer-reviewed publications on this topic. The current review demonstrates that there is no agreed vision screening protocol for children in Australia. This appears to be a result of the lack of strong evidence supporting the benefit of such screenings. While amblyopia, strabismus and, to a lesser extent refractive error, are targeted by many screening programs during pre-school and at school entry, there is less agreement regarding the value of screening for other visual conditions, such as binocular vision disorders, ocular health problems and refractive errors that are less likely to reduce distance visual acuity. In addition, in Australia, little agreement exists in the frequency and coverage of screening programs between states and territories and the screening programs that are offered are ad hoc and poorly documented. Australian children stand to benefit from improved cohesion and communication between jurisdictions and health professionals to enable an equitable provision of validated vision screening services that have the best chance of early detection and intervention for a range of paediatric visual problems.

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Objective. We have developed an image analysis methodology for quantifying the anisotropy of neuronal projections on patterned substrates. Approach. Our method is based on the fitting of smoothing splines to the digital traces produced using a non-maximum suppression technique. This enables precise estimates of the local tangents uniformly along the neurite length, and leads to unbiased orientation distributions suitable for objectively assessing the anisotropy induced by tailored surfaces. Main results. In our application, we demonstrate that carbon nanotubes arrayed in parallel bundles over gold surfaces induce a considerable neurite anisotropy; a result which is relevant for regenerative medicine. Significance. Our pipeline is generally applicable to the study of fibrous materials on 2D surfaces and should also find applications in the study of DNA, microtubules, and other polymeric materials.

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Many professions have requirements for professional development activities to ensure continuing registration or membership. These commonly focus on participation in a limited range of activities. This paper questions the assumptions behind such approaches and what alternatives might be considered. It explores the suitability of metaphors used for continuing professional education and suggests that continuing professional development might be better conceptualised within practice theory. It identifies what a practice theory view of continuing professional development might involve and discusses the implications, particularly the notion of locating development within the practices of work.

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Visual Analytics (VA) is an approach to data analysis by means of visual manipulation of data representation, which relies on innate human abilities of perception and cognition. Even though current visual toolkits in the Business Analytics (BA) domain have improved the effectiveness of data exploration, analysis and reporting, their features are often not intuitive, and can be confusing and difficult to use. Moreover, visualizations generated from these toolkits are mostly accessible to specialist users. Thus, there is a need for analytic environments that support data exploration, interpretation and communication of insight that do not add to the cognitive load of the analyst and their non-technical clients. In this conceptual paper, we explore the potential of primary metaphors, which arise out of human lived and sensory-motor experiences, in the design of immersive visual analytics environments. Primary metaphors provide ideas for representation of time, space, quantity, similarity, actions and team work. Using examples developed in our own work, we also explain how to combine such metaphors to create complex and cognitively acceptable visual metaphors, such as 3D data terrains that approximate our intuition of reality and create opportunities for data to be viewed, navigated, explored, touched, changed, discussed, reported and described to others, individually or collaboratively.

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Vision based tracking of an object using the ideas of perspective projection inherently consists of nonlinearly modelled measurements although the underlying dynamic system that encompasses the object and the vision sensors can be linear. Based on a necessary stereo vision setting, we introduce an appropriate measurement conversion techniques which subsequently facilitate using a linear filter. Linear filter together with the aforementioned measurement conversion approach conforms a robust linear filter that is based on the set values state estimation ideas; a particularly rich area in the robust control literature. We provide a rigorously theoretical analysis to ensure bounded state estimation errors formulated in terms of an ellipsoidal set in which the actual state is guaranteed to be included to an arbitrary high probability. Using computer simulations as well as a practical implementation consisting of a robotic manipulator, we demonstrate our linear robust filter significantly outperforms the traditionally used extended Kalman filter under this stereo vision scenario. © 2008 IEEE.

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or this inter-disciplinary article, we undertook a pilot case study that eye-tracked the ‘Holmes Saves Mrs. Hudson’ sequence from the episode, A Scandal in Belgravia (Sherlock, BBC, 2012). This small-scale empirical study involved a total of 13 participants (3 males and 10 females, mean age was: 27 years), comprised of a mixture of academics and undergraduate students at La Trobe University in Melbourne, Australia. The article examines its findings through a range of threaded frames – neuroscience, forensics, surveillance, haptics, memory, performance-movement, and relationality – and uniquely draws upon the interests of the authors to set the examination in context. The article is both a reading of Sherlock and a dialogue between its authors. We discover that the codes and conventions of Sherlock have a direct impact on where viewers look but we also discover eyes emerging in the periphery of the frame, and we account for these ways of seeing in different ways.

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Multicomponent signals are made up of interacting elements that generate a functional signaling unit. The interactions between signal components and their effects on individual fitness are not well understood, and the effect of environment is even less so. It is usually assumed that color patterns appear the same in all light environments and that the effects of each color are additive. Using guppies, Poecilia reticulata, we investigated the effect of water color on the interactions between components of sexually selected male coloration. Through behavioral mate choice trials in four different water colors, we estimated the attractiveness of male color patterns, using multivariate fitness estimates and overall signal contrast. Our results show that females exhibit preferences that favor groups of colors rather than individual colors independently and that each environment favors different color combinations. We found that these effects are consistent with female guppies selecting entire color patterns on the basis of overall visual contrast. This suggests that both individuals and populations inhabiting different light environments will be subject to divergent, multivariate selection. Although the appearance of color patterns changes with light environment, achromatic components change little, suggesting that these could function in species recognition or other aspects of communication that must work across environments. Consequently, we predict different phylogenetic patterns between chromatic and achromatic signals within the same clades.

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Previous research has suggested that the presence of zoo visitors may be stressful for various primate species, and visual contact with visitors may be the sensory stimuli that mediate visitor effects. We studied a group of black-capped capuchins, Cebus apella, in a controlled experiment, randomly imposing two treatments: customised one-way vision screens on the exhibit viewing windows to reduce visual contact with visitors; and unmodified viewing windows that allow full visual contact with visitors. We sampled capuchin behaviour including intra-group aggression and other social interactions, vigilance and abnormal behaviours. To provide a measure of physiological stress, we also analysed capuchin faecal samples for glucocorticoid metabolite (FGM) concentration. When the view of visitors was obscured, we found marked reductions in capuchin aggression (from 14.5 bouts to 4.6 bouts per weekend, P= 0.004) and FGM concentration (from 620 to 410. ng/g, P= 0.008) among all adults, as well as reductions in abnormal behaviour (P = 0.01) in two individuals. The capuchins also avoided the visitor viewing area (P = 0.003) in the unmodified viewing window treatment. These results suggest that reducing the capuchins' ability to view visitors improved their welfare. However we also found a reduction in the number of visitors when visual contact was reduced (from an average of 23 visitors per scan to 15, P = 0.008), suggesting that the visitor experience may have been compromised by the lack of interaction with the capuchins. These results highlight a possible dilemma for the zoo industry between enhancing animal welfare in primates and providing for visitor experience.