Visual

The ability to understand student learning styles can increase the educational experience. Teachers might adjust their teaching style so that it is more congruent with a given student's or class of students' learning style. One of the most important uses of learning styles is that it makes it easy for teachers to incorporate them into their teaching. There are different learning styles. Three of the most popular ones are visual, auditory, and kinaesthetic in which STUDENTS take in information. Some students are visual learners, while others are auditory or kinaesthetic learners. While students use all of their senses to take in information, they seem to have preferences in how they learn best. In order to help students learn, teachers need to teach as many of these preferences as possible. Teachers can incorporate these learning styles in their curriculum activities so that students are able to succeed in their classes. This study is an analysis of learning styles for Iranian EFL students. The purpose of this study is to increase faculty awareness and understanding of the effect of learning styles on the teaching process. A review of the literature along with analysis of the data will determine how learning styles affect the teaching process.

La presente publicación no podrá ser reproducida, ni en su totalidad ni en parte, por ningún medio, en ninguna forma y para ningún fin. AUTODESK, INC. , Inc. se reserva el derecho a revisar y mejorar sus productos como estime conveniente. Esta publicación define el estado del producto en el momento de la publicación y podría no corresponder a versiones futuras del mismo.

La presente publicación no podrá ser reproducida, ni en su totalidad ni en parte, por ningún medio, en ninguna forma y para ningún fin. AUTODESK, INC. , Inc. se reserva el derecho a revisar y mejorar sus productos como estime conveniente. Esta publicación define el estado de este producto en el momento de su publicación y podría no corresponder a versiones futuras del mismo.

Art history lacks a persuasive account of the nature of graphic marks, and that limits what can be said about pictures. This essay gathers some of the principal sources. An expanded version appeared in the book "On Pictures, And the Words That Fail Them."

Video technology offers expanded possibilities for looking at interaction and communication in various ‘natural’ settings, for example workplaces and situations of informal communication or educational interaction. In the last decades international groups of scholars have developed a prominent approach to sequentially analyze visual data from social interaction. In addition to standardized ways of looking at video recorded interaction, this approach is interpretive. After a short overview of earlier research, we will briefly discuss the relevance of interpretation to video analysis. Before we describe how to sequentially analyze video recorded social interaction, we sketch the role of data collection, coding and sampling. Because these processes are part of a focused ethnography, we use the shorthand ‘videography’ rather than video interaction analysis. ‘Sequentiality’ is a central category in fine-grained analyzes of video recorded interaction that supports empirically based interpretations of actions. This will be illustrated through three empirical examples, which also highlight the interrelatedness between textural and visual elements. Finally, we will discuss the relation between sequential analysis of video recorded interaction and the wider ethnographic and social context, which is essential to videography.

Spatio-temporal data sets are often very large and difficult to analyze and display. Since they are fundamental for decision support in many application contexts, recently a lot of interest has arisen toward data-mining techniques to filter out relevant subsets of very large data repositories as well as visualization tools to effectively display the results. In this paper we propose a data-mining system to deal with very large spatio-temporal data sets. Within this system, new techniques have been developed to efficiently support the data-mining process, address the spatial and temporal dimensions of the data set, and visualize and interpret results. In particular, two complementary 3D visualization environments have been implemented. One exploits Google Earth to display the mining outcomes combined with a map and other geographical layers, while the other is a Java3Dbased tool for providing advanced interactions with the data set in a non-geo-referenced space, such as displaying association rules and variable distributions. r

This article reports on an exploratory journey that examines the usage of visual arts as a learning tool in typography courses. Through the use of pangram and Singapore English, Singlish, the study explores interesting ways to explicate information, hoping to conceive and interpret typography in surprising and inventive ways. It also aims to reflect a range of thinking about conceptual and illustrative typography. Students participating in this research are third year BFA Visual Communication undergraduates. There are three parts to this study: firstly, students are told to create hybrid typeface through exploration of combination and elimination methods. Secondly, they are expected to create Singlish pangrams. Lastly, students formed into groups to design three-dimensional installations for their chosen pangram. The final designs were exhibited in the Singapore Design Festival to collect data. A questionnaire-survey was used and the result was measured by the experiences of the viewers. This study hopes to inspire students to do contemporary design with a touch of their eastern personality.

The present study focuses on two aspects of the time course of visual information processing during the perception of natural scenes. The first aspect is the change of fixation duration and saccade amplitude during the first couple of seconds of the inspection period, as has been described by , among others. This common effect suggests that the saccade amplitude and fixation duration are in some way controlled by the same mechanism. A simple exponential model containing two parameters can describe the phenomena quite satisfactorily. The parameters of the model show that saccade amplitude and fixation duration may be controlled by a common mechanism. The second aspect under scrutiny is the apparent lack of correlation between saccade amplitude and fixation duration ). The present study shows that a strong but nonlinear relationship between saccade amplitude and fixation duration does exist in picture viewing. A model, based on notions laid out by Findlay and Walker's (1999) model of saccade generation and on the idea of two modes of visual processing , was developed to explain this relationship. The model both fits the data quite accurately and can explain a number of related phenomena.

The research presented in this paper uses memory work as a method to explore six women's collective constructions of two embodied practices, sweating and pain. The paper identi es limitations in the ways in which social constructionist research has theorized the relationship between discourse and materiality, and it proposes an approach to the study of embodiment which enjoins, rather than bridges, the discursive and the non-discursive. The paper presents an analysis of 25 memories of sweating and pain which suggests that Cartesian dualism is central to the women's accounts of their experiences. However, such dualism does not operate as a stable organizing principle. Rather, it offers two strategies for the performance of a split between mind and body. The paper traces the ways in which dualism can be both functional and restrictive, and explores the tensions between these two forms. The paper concludes by identi ying opportunities and limitations associated with memory work as a method for studying embodiment.

To evaluate the efficacy of digital photographs and graphic computer software for color matching compared to conventional visual matching. Materials and Methods: The shade of a tab from a shade guide (Vita 3D-Master Guide) placed in a phantom head was matched to a second guide of the same type by nine observers. This was done for twelve selected shade tabs (tests). The shadematching procedure was performed visually in a simulated clinic environment and with digital photographs, and the time spent for both procedures was recorded. An alternative arrangement of the shade tabs was used in the digital photographs. In addition, a graphic software program was used for color analysis. Hue, chroma, and lightness values of the test tab and all tabs of the second guide were derived from the digital photographs. According to the CIE L * C * h * color system, the color differences between the test tab and tabs of the second guide were calculated. The shade guide tab that deviated least from the test tab was determined to be the match. Shade matching performance by means of graphic software was compared with the two visual methods and tested by Chi-square tests (α = 0.05). Results: Eight of twelve test tabs (67%) were matched correctly by the computer software method. This was significantly better (p < 0.02) than the performance of the visual shade matching methods conducted in the simulated clinic (32% correct match) and with photographs (28% correct match). No correlation between time consumption for the visual shade matching methods and frequency of correct match was observed. Conclusions: Shade matching assisted by digital photographs and computer software was significantly more reliable than by conventional visual methods.

Perceived gaze contact in seen faces may convey important social signals. We examined whether gaze perception affects face processing during two tasks: Online gender judgement, and later incidental recognition memory. Individual faces were presented with eyes directed either straight towards the viewer or away, while these faces were seen in either frontal or three-quarters view. Participants were slower to make gender judgements for faces with direct versus averted eye gaze, but this effect was particularly pronounced for faces with opposite gender to the observer, and seen in three-quarters view. During subsequent surprise recognitionmemory testing, recognition was better for faces previously seen with direct than averted gaze, again especially for the opposite gender to the observer. The effect of direct gaze was stronger in both tasks when the head was seen in three-quarters rather than in frontal view, consistent with the greater salience of perceived eye contact for deviated faces. However, in the memory test, face recognition was also relatively enhanced for faces of opposite gender in front views when their gaze was averted rather than direct. Together, these results indicate that perceived eye contact can interact with facial processing during gender judgements and recognition memory, even when gaze direction is task-irrelevant, and particularly for

This study examined the differences in processing between typical and dyslexic readers in a lexical decision task in different modalities (visual, auditory, and cross modality). In general, dyslexics exhibited slower reaction times and made more mistakes when performing the task. The biggest gap between the two groups of readers was found on the visual task. However, the dyslexics benefited from the cross modality presentation, with differences between the two groups minimized. The results of this study indicate that the slowness characteristic of dyslexics' stems mainly from slow processing of visual linguistic information and that supporting both processing systems relevant to reading will assist inter-sensory integration and may ease the word decoding process among dyslexics.

IT MAY BE FUN TO PERCEIVE ILLUSIONS, BUT THE UNDERSTANDING OF HOW THEY WORK IS EVEN MORE STIMULATING AND SUSTAINABLE: They can tell us where the limits and capacity of our perceptual apparatus are found-they can specify how the constraints of perception are set. Furthermore, they let us analyze the cognitive sub-processes underlying our perception. Illusions in a scientific context are not mainly created to reveal the failures of our perception or the dysfunctions of our apparatus, but instead point to the specific power of human perception. The main task of human perception is to amplify and strengthen sensory inputs to be able to perceive, orientate and act very quickly, specifically and efficiently. The present paper strengthens this line of argument, strongly put forth by perceptual pioneer Richard L. Gregory (e.g., Gregory, 2009), by discussing specific visual illusions and how they can help us to understand the magic of perception.

Seventeen Ss were videotaped as they provided narrative descriptions of 13 photographs. Judgments from 129 naive untrained Ss were used to isolate 60 speech-related gestures and their lexical affiliates (i.e., the accompanying word or phrase judged as related in meaning) from these 221 narratives. A computer-video interface measured each gesture, and a 3rd group of Ss rated word familiarity of each lexical affiliate. Multiple regression revealed that gesture onset preceded voice onset by an interval whose magnitude was inversely related to the lexical affiliate's rated familiarity. The lexical affiliate's familiarity was also inversely related to gesture duration. Results suggest that difficulty encountered during lexical access affects both gesture and speech. Familiarity's systematic relations with gesture-speech asynchrony and gesture duration make it unlikely that speech and gesture are produced independently by autonomous modules.

Previous work suggests only a small set of facial expressions can be interpreted universally with any reliability. This set is confined to the six basic emotions. On the other hand, &#x27;&#x27;cognitive&quot; mental states (such as distrust, recognize, etc.) are held to be private, unobservable, and ...

We investigated the involvement of the parietal cortex in binding features during visual search using functional magnetic resonance imaging. We tested 10 subjects in four visual search tasks across which we independently manipulated (1) the requirement to integrate different types of features in a stimulus (feature or conjunction search) and (2) the degree of search efficiency (efficient or inefficient). We identified brain areas that were common to all conditions of visual search and areas that were sensitive to the factors of efficiency and feature binding. Visual search engaged an extensive network of parietal, frontal, and occipital areas. The factor of efficiency exerted a strong influence on parietal activations along the intraparietal sulcus and in the superior parietal lobule. These regions showed a main effect of efficiency and showed a simple effect when inefficient conditions were compared directly with efficient pop-out conditions in the absence of feature binding. Furthermore, a correlation analysis supported a tight correspondence between posterior parietal activation and the slope of reaction-time search functions. Conversely, feature binding during efficient pop-out search was not sufficient to modulate the parietal cortex. The results confirm the important role of the parietal cortex in visual search, but suggest that feature binding is not a requirement to engage its contribution. © 2002 Elsevier Science (USA)

The actions of gonadal steroid hormones induce morphological sex differences in many tissues in the body, including brain. These occur either during development to organize tissues in a sex-specific pattern and/or in adulthood to activate specific cellular pathways. Cellular and morphological changes in the brain, induced by androgens and estrogens, underlie behavioral sex differences in both reproductive and non-reproductive behaviors, including visual perception. A growing body of evidence indicates that some sex differences related to visual perception arise as the result of the organizational actions of gonadal steroid hormones on cerebral cortical pathways involved in visual processing of objects and movement. This review addresses the influence of gonadal steroids on structural, biochemical and morphological changes in tissues in the brain and body. These effects are extended to consider how gonadal hormone effects may contribute to cognitive sex differences across species that are related to processing within the dorsal and ventral visual streams for motion and objects, respectively. Lastly, this review considers the question of how cognitive sex differences related to processing of movement and objects in humans may be reflective of two types of cognitive style that are only superficially related to gender.

Neurophysiological studies on children and adults with dyslexia provide a deeper understanding of how visual and auditory processing in dyslexia might relate to reading deficits. The goal of this review is to provide an overview of research findings in the last two decades on motion related and contrast sensitivity visual evoked potentials and on auditory event related potentials to basic tone and speech sound processing in dyslexia. These results are particularly relevant for three important theories about causality in dyslexia: the magnocellular deficit hypothesis, the temporal processing deficit hypothesis and the phonological deficit hypothesis. Support for magnocellular deficits in dyslexia are primarily provided from evidence for altered visual evoked potentials to rapidly moving stimuli presented at low contrasts. Consistently ERP findings revealed altered neurophysiological processes in individuals with dyslexia to speech stimuli, but evidence for deficits processing certain general acoustic information relevant for speech perception, such as frequency changes and temporal patterns, are also apparent.

The orienting of visual-spatial attention is fundamental to most organisms and is controlled through external (exogenous) or internal (endogenous) processes. Exogenous orienting is considered to be reflexive and automatic, whereas endogenous orienting refers to the purposeful allocation of attentional resources to a predetermined location in space. Although behavioral, electrophysiological and lesion research in both primates and humans suggests that separate neural systems control these different modes of orienting, previous human neuroimaging studies have largely reported common neuronal substrates. Therefore, event-related FMRI (ER-FMRI) was used to independently examine different components of the orienting response including endogenous facilitation, exogenous facilitation and inhibition of return (IOR). In contrast to previous studies, endogenous versus exogenous facilitation resulted in widespread cortical activation including bilateral temporoparietal junction, bilateral superior temporal gyrus, right middle temporal gyrus, right frontal eye field and left intraparietal sulcus. Conversely, IOR compared to endogenous facilitation resulted in only a single focus of activation in the left superior temporal gyrus. These findings suggest that endogenous orienting activates a large cortical network to achieve internally generated shifts of attentional resources versus the automatic orienting that occurs with exogenous cues. However, similar networks may mediate endogenous orienting and IOR. The activation of the temporoparietal junction suggests that it is involved in more effortful processes, such as endogenous orienting, as well as in attentional reorienting and locating targets. Current results are discussed in terms of the functional development of the visual-spatial attentional system. D

Physiological and behavioral studies in animal models have revealed that information from the different senses can be used synergistically to enhance the detection of objects and events. Although a great deal of evidence exists which demonstrates the synergistic use of multisensory cues in human behavior and perception, there is conflicting evidence about whether such interactions can be used to aid in stimulus detection. To examine this issue, we had volunteers indicate the presence or absence of a brief, low-intensity sound that was either presented alone or paired with a simultaneous light in a one-interval signal detection task. In the first experiment, the task-irrelevant light was found to enhance the detectability of the sound, but also to increase the subject's willingness to report the presence of a sound (i.e., response bias). In the second experiment, designed to eliminate this response bias, we found an improvement in stimulus detectability in the absence of any change in bias. These findings demonstrate the presence of a significant multisensorymediated gain in stimulus detection in human subjects. 

Ozone-based processing is a novel technology with potentially fewer adverse effects than in-shell thermal pasteurization of eggs. There are no consumer acceptance studies published on ozone-treated eggs. This study examines consumers' ability to detect changes between ozone-treated, thermal-treated, and fresh untreated eggs. Consumers (n = 111) evaluated visual attributes of uncooked eggs and a separate group of consumers (n = 132) evaluated acceptability of cooked eggs. Consumers evaluated attribute intensity of the eggs. The yolks and albumens of the thermal-treated and ozone-treated eggs were perceived to be significantly cloudier than the untreated control, while the ozone-treated eggs were more similar to control (P < 0.05). The yolks of ozone-treated eggs were perceived to have significantly lower heights and greater spreads than the others (P < 0.05). Despite these perceptions, overall visual appeal of ozone-treated eggs was not significantly different from control eggs. A separate set of consumers used hedonic scales to evaluate overall liking, appearance, aroma, flavor, and texture of cooked eggs. Just-about-right (JAR) scales were used to rate the color, moistness, and texture. There were no differences on any attribute scores between the treatments, except thermal-treated and ozone-treated were perceived as less moist than the control. There were no adverse effects on consumer acceptance of eggs, treated with ozone, with acceptance the same as an untreated control. These findings are useful as ozone pasteurization can enhance the safety of fresh shell eggs to meet the goals of the U.S. Egg Safety Action Plan. Practical Application: The U.S. Egg Safety Action Plan requires all shell eggs to be pasteurized to prevent foodborne illness. Heat pasteurization partially cooks the egg, so an alternative process uses ozone with less heat. This study shows the ozone pasteurization has no detectable sensory defects.

Objective: This study examined the effect of motivation as a possible psychological influencing variable on P300 amplitude and performance in a brain-computer interface (BCI) controlled by event-related potentials (ERP). Methods: Participants were instructed to copy spell a sentence by attending to cells of a randomly flashing 7 Ã 7 matrix. Motivation was manipulated by monetary reward. In two experimental groups participants received 25 (N = 11) or 50 (N = 11) Euro cent for each correctly selected character; the control group (N = 11) was not rewarded. BCI performance was defined as the overall percentage of correctly selected characters (correct response rate = CRR). Results: Participants performed at an average of 99%. At electrode location Cz the P300 amplitude was positively correlated to self-rated motivation. The P300 amplitude of the most motivated participants was significantly higher than that of the least motivated participants. Highly motivated participants were able to communicate correctly faster with the ERP-BCI than less motivated participants. Conclusions: Motivation modulates the P300 amplitude in an ERP-BCI. Significance: Motivation may contribute to variance in BCI performance and should be monitored in BCI settings.

The morphology of congenital cataract reflects a combination of the timing and nature of the cause, the anatomy of the lens including its capsule, its development, and changes that take place with time. Morphology may variably affect prognosis, give a clue to the etiology and the age of onset and, in an isolated case, sometimes suggest heritability. The spectrum of morphological variations is enormous and can be complex. A comprehensive approach is to classify the variations according to the area of the lens involved, and sub-dividing them by a detailed description of the shape and appearance. Each specific morphological type is then analyzed determining the etiology, visual prognosis, and management. The use of gene markers has allowed many of these variations to be identified and categorized. Cataracts in childhood can involve the whole lens, in which case they are called total, Morgagnian, or disk-like. They can affect only the center of the lens: lamellar, nuclear, oil droplet, cortical, or coronary. They can be anterior: anterior polar, anterior subcapsular, or anterior lenticonus. The posterior aspect of the lens can also be affected in different fashions: Mittendorf's dot, posterior lenticonus, posterior cortical cataracts, or posterior subcapsular. There are five more forms that must be described separately: punctuate lens opacities, sutural cataracts, coralliform or crystalline, wedge-shaped, and persistent hyperplastic primary vitreous. ( Surv Ophthalmol 48: 2003)

In essence, the goal of this project is to interrogate the multi-semiotic manifestations of hegemonic masculinity and femininity in male and female body culture as manifested on Men’s Health and Women’s Health cover-page corpora that spanned from 2011 to mid2016. The research uses a mixed-methods design with macro- and micro-level analysis. On the macro level, a ‘themes’ analysis is conducted to illuminate the ideological nature of the multimodal ensemble of the cover pages. On the micro level, the researcher draws on a trio of analytical frameworks through which the semiotic choices embedded in the media texts can be more objectively examined, namely: Halliday’s SFG for the verbal analysis; Kress and van Leeuween’s VG for the visual analysis; and Lakoff and Johnson’s CMT for the cognitive analysis of multimodal metaphors and metonymies. While being tangential to the notion of health itself, the cover pages endorse a peculiar fitness discourse in which subtle consumerist ideologies of male and female empowerment are co-opted. Men’s Health and Women’s Health perpetuate unhealthy physical standards and unattainable canons of beauty linked to hegemony, more overtly calling for the consumption of products that will transform the millennial male and female consumers into more socially acceptable packages for the outside gaze.

Multi-sensory warnings can potentially enhance risk communication. Hereto we investigated how temporal signal parameters affect perceived urgency within and across modalities. In an experiment, 78 observers rated the perceived urgency of uni-, bi-, and/or tri-modal stimuli as function of 25 combinations of pulse duration (range 100-1600 ms) and inter pulse interval length (100-1600 ms). The results showed that perceived urgency increases with signal rate. Inter pulse interval showed a larger effect than pulse duration and the largest differences in perceived urgency as function of inter pulse interval occurred at the smallest pulse duration (100 ms). The effects of pulse duration and inter pulse interval were universal across modalities. Bi-and tri-modal signals were perceived as more urgent than each of their uni-modal constituents. We conclude that temporal parameters can be deployed to construct integrated, multi-sensory warning signals with a pre-specified degree of perceived urgency.

Deuteranomalous trichromacy, which affects medium-wavelength-sensitive cones, is more common than protanomalous trichromacy, which affects long-wavelength-sensitive cones. The aim of the present work was to test the extent to which these two kinds of anomalous trichromacy affect surface-color judgments in the natural world. Simulations of 18 natural scenes under different daylight illuminants were presented on a high-resolution color monitor to 7 deuteranomalous, 7 protanomalous, and 12 normal trichromatic observers, who had to discriminate between reflectance and illuminant changes in the images. Observers' ability to judge surface color was quantified by a standard color-constancy index. Deuteranomalous trichromats performed as well as normal trichromats, but protanomalous trichromats performed more poorly than both. The results are considered in relation to the spectral coverage of cones, rod intrusion, and the characterization of anomalous trichromacy by the Rayleigh match.

EEG and MEG scalp data were simultaneously recorded while human participants were performing a duration discrimination task in visual and auditory modality, separately. Short durations were used ranging from 500 to 900 ms, among which participants had to discriminate a previously memorized 700-ms ''standard'' duration. Behavioral results show accurate but variable performance within and between participants with expected modality effects: the percentage of responses was greater and the mean response time was shorter for auditory than for visual signals. Sustained electric and magnetic activities were obtained correlatively to duration estimation, but with distinct spatiotemporal properties. Electric CNV-like potentials showed fronto-central negativity in both modalities, whereas magnetic sustained fields were distributed with respect to the modality of the interval to be timed. Time courses of these slow brain activities were found to be dependent on stimulus duration but not on its modality nor on the recording signal (EEG or MEG). Source reconstruction demonstrated that these sustained potentials/fields were generated by superimposed contributions from visual and auditory cortices (sustained sensory responses, SSR) and from prefrontal and parietal regions. By using these two complementary techniques, we thus demonstrated the involvement of frontal and parietal cerebral cortex in human timing. D 2004 Elsevier B.V. All rights reserved.

Repeated experience with a visual stimulus can result in improved perception of the stimulus, i.e., perceptual learning. To understand the underlying neural mechanisms of this process, we used functional magnetic resonance imaging to track brain activations during the course of training on a contrast discrimination task. Based on their ability to improve on the task within a single scan session, subjects were separated into two groups: "learners" and "nonlearners." As learning progressed, learners showed progressively reduced activation in both visual cortex, including Brodmann's areas 18 and 19 and the fusiform gyrus, and several cortical regions associated with the attentional network, namely, the intraparietal sulcus (IPS), frontal eye field (FEF), and supplementary eye field. Among learners, the decrease in brain activations in these regions was highly correlated with the magnitude of performance improvement. Unlike learners, nonlearners showed no changes in brain activations during training. Learners showed stronger activation than nonlearners during the initial period of training in all these brain regions, indicating that one could predict from the initial activation level who would learn and who would not. In addition, over the course of training, the functional connectivity between IPS and FEF in the right hemisphere with early visual areas was stronger for learners than nonlearners. We speculate that sharpened tuning of neuronal representations may cause reduced activation in visual cortex during perceptual learning and that attention may facilitate this process through an interaction of attention-related and visual cortical regions.

There is increasing advocacy for inclusive community-based approaches to environmental management, and growing evidence that involving communities improves the sustainability of social-ecological systems. Most community-based approaches rely on partnerships and knowledge exchange between communities, civil society organizations, and professionals such as practitioners and/or scientists. However, few models have actively integrated more horizontal knowledge exchange from community to community. We reflect on the transferability of community owned solutions between indigenous communities by exploring challenges and achievements of community peer-to-peer knowledge exchange as a way of empowering communities to face up to local environmental and social challenges. Using participatory visual methods, indigenous communities of the North Rupununi (Guyana) identified and documented their community owned solutions through films and photostories. Indigenous researchers from this community then shared their solutions with six other communities that faced similar challenges within Guyana, Suriname, Venezuela, Colombia, French Guiana, and Brazil. They were supported by in-country civil society organizations and academics. We analyzed the impact of the knowledge exchange through interviews, field reports, and observations. Our results show that indigenous community members were significantly more receptive to solutions emerging from, and communicated by, other indigenous peoples, and that this approach was a significant motivating force for galvanizing communities to make changes in their community. We identified a range of enabling factors, such as building capacity for a shared conceptual and technical understanding, that strengthens the exchange between communities and contributes to a lasting impact. With national and international policy-makers mobilizing significant financial resources for biodiversity conservation and climate change mitigation, we argue that the promotion of community owned solutions through community peer-to-peer exchange may deliver more long-lasting, socially and ecologically integrated, and investment-effective strategies compared to top-down, expert led, and/or foreign-led initiatives.

Visual feedback has traditionally been used in the assembly process to a very limited extent. With the advent of effective visual servoing techniques, visual feedback can become an integral part of the assembly process by complementing the use of force feedback to accomplish precision assemblies in imprecisely calibrated robotic assembly workcells. In this paper we present some of the issues pertaining to the introduction of visual servoing techniques into the assembly process and solutions we have demonstrated to these problems.

When wandering around a city such as São Paulo, we are surrounded by letters, numbers and symbols. These elements form part of an environment full of signs in many shapes and sizes that compete for our attention. Our perception of these elements contributes towards our spatial guidance and sense of place. The

We investigated two aspects of lexical organization in normal adults employing behavioral and electrophysiological indices of Ž . Ž . semantic priming, namely: 1 Is there evidence for differential processing of nouns and verbs? 2 Is there evidence for separate systems Ž . for processing of orthographic and phonologic representations of words? Reaction time RT , N400 amplitude and latency were used to examine the effect of semantic priming on lexical access of auditorily and visually presented nouns and verbs. We found that the temporal patterns of primed RTs and N400 latencies differed for nouns and verbs, indicating a functional difference in processing. However, the absence of topographic differences in N400 between nouns and verbs did not support anatomically distinct representations of these word classes. By contrast, a modality-specific topography at N400, in addition to RT and N400 amplitude differences between auditory and visual conditions, supported the proposed separation of the orthographic and phonologic representations of words. The implications of the findings for general theories of lexical organization are discussed. q 1997 Elsevier Science B.V.

There is evidence that presenting titles together with artworks affects their processing. We investigated whether elaborative and descriptive titles change the appreciation and understanding of paintings. Under long presentation times (90 s) in Experiment 1, testing representative and abstract paintings, elaborative titles increased the understanding of abstract paintings but not their appreciation. In order to test predictions concerning the time course of understanding and aesthetic appreciation . A model of aesthetic appreciation and aesthetic judgments. British Journal of Psychology, 95(4), 489-508] in Experiment 2, abstract paintings were presented under two presentation times. For short presentation times (1 s), descriptive titles increased the understanding more than elaborative titles, whereas for medium presentation times (10 s), elaborative titles increased the understanding more than descriptive titles. Thus, with artworks a presentation time of around 10 s might be needed, to assign a meaning beyond the mere description. Only at medium presentation times did the participants with more art knowledge have a better understanding of the paintings than participants with less art knowledge. Thus, it seems that art knowledge becomes significant, if there is sufficient time to assign a meaning and the present studies reveal the importance of considering the time course in aesthetic appreciation.

Our work is inspired by the book Imagining Numbers (particularly the square root of minus fifteen), by Harvard University mathematics professor Barry Mazur (Imagining numbers (particularly the square root of minus fifteen), Farrar, Straus and Giroux, New York, 2003). The work of Mazur led us to question whether the features and steps of Mazur’s re-enactment of the imaginative work of mathematicians could be appropriated pedagogically in a middle-school setting. Our research objectives were to develop the framework of teaching mathematics as a way of imagining and to explore the pedagogical implications of the framework by engaging in an application of it in middle school setting. Findings from our application of the model suggest that the framework presents a novel and important approach to developing mathematical understanding. The model demonstrates in particular the importance of shared visualizations and problem-posing in learning mathematics, as well as imagination as a cognitive space for learning.

Many real-world scenes contain a dynamic range that exceeds conventional display technology by several orders of magnitude. Through the combination of several existing technologies, new high dynamic range displays, capable of reproducing a range of intensities much closer to that of real environments, have been constructed. These benefits come at the cost of more optically complex devices; involving two image modulators, controlled in unison, to display images. We present several methods of rendering images to this new class of devices for reproducing photometrically accurate images. We discuss the process of calibrating a display, matching the response of the device with our ideal model. We then derive series of methods for efficiently displaying images, optimized for different criteria and evaluate them in a perceptual framework.