Dissertations / Theses on the topic 'Visitor perception'
To see the other types of publications on this topic, follow the link: Visitor perception.
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'Visitor perception.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
1
Frede, David. "A tale of two zoos : a study in watching people watching animals." Thesis, The University of Sydney, 2007. http://hdl.handle.net/2123/3762.
Full textAbstract:
Zoological gardens, or zoos, keep and display wild animals, mainly for the purposes of education, conservation and biological research. However, it is evident that a significant component of zoos is the vast number of people who visit them, since without the support of visitors, zoos would not be financially viable and would cease to exist. This research investigates the behaviours of these visitors and develops an understanding of their awareness relating to what they see and do while they are in the zoo, along with their motivations for visiting. The study focuses on two major metropolitan zoos in Australia: Adelaide (in South Australia) and Taronga (in Sydney, New South Wales). A brief historical account contextualises changes, raising awareness of the significance of visitors to the livelihood of zoos. More and more zoos are integrating into their management routines different programmes that relate to the care and welfare of the animals. Despite recent growth in scientific attention, which has focused on human-animal relationships, little research has been conducted relating to the human visitor in the zoo. To date, decisions made by administrators have been based upon assumptions of the visitors’ understanding of the work of zoos rather than on actual quantitative findings. This empirical research is significant in that it uses both quantitative and qualitative methods to appraise factual data and information. The data from unobtrusive tracking observations at different exhibits, combined with the results of questionnaire surveys, are used to explore and assess the perceptions of visitors. In developing a demographic profile of the people who visit zoos, this work considers the motivations and the frequency of visitors. Various factors that influence the viewing patterns of visitors are explored to assess the popularity of exhibits, and the perceptions of visitors relating to animals and enclosures are investigated, to assess the diverse levels of satisfaction. Case studies explore the perceptions and understandings of visitors towards the use of enrichment items, the use of signs and labels, and a hypothetical approach to the feeding of carnivores in zoos. The results are important in that they contribute essential knowledge that describes the perceptions of a wide range of people who visit zoos, along with their expectations, since it is crucial for these institutions to maintain their popularity with the public.
2
Frede, David. "A tale of two zoos : a study in watching people watching animals." University of Sydney, 2007. http://hdl.handle.net/2123/3762.
Full textAbstract:
Doctor of PhilosophyZoological gardens, or zoos, keep and display wild animals, mainly for the purposes of education, conservation and biological research. However, it is evident that a significant component of zoos is the vast number of people who visit them, since without the support of visitors, zoos would not be financially viable and would cease to exist. This research investigates the behaviours of these visitors and develops an understanding of their awareness relating to what they see and do while they are in the zoo, along with their motivations for visiting. The study focuses on two major metropolitan zoos in Australia: Adelaide (in South Australia) and Taronga (in Sydney, New South Wales). A brief historical account contextualises changes, raising awareness of the significance of visitors to the livelihood of zoos. More and more zoos are integrating into their management routines different programmes that relate to the care and welfare of the animals. Despite recent growth in scientific attention, which has focused on human-animal relationships, little research has been conducted relating to the human visitor in the zoo. To date, decisions made by administrators have been based upon assumptions of the visitors’ understanding of the work of zoos rather than on actual quantitative findings. This empirical research is significant in that it uses both quantitative and qualitative methods to appraise factual data and information. The data from unobtrusive tracking observations at different exhibits, combined with the results of questionnaire surveys, are used to explore and assess the perceptions of visitors. In developing a demographic profile of the people who visit zoos, this work considers the motivations and the frequency of visitors. Various factors that influence the viewing patterns of visitors are explored to assess the popularity of exhibits, and the perceptions of visitors relating to animals and enclosures are investigated, to assess the diverse levels of satisfaction. Case studies explore the perceptions and understandings of visitors towards the use of enrichment items, the use of signs and labels, and a hypothetical approach to the feeding of carnivores in zoos. The results are important in that they contribute essential knowledge that describes the perceptions of a wide range of people who visit zoos, along with their expectations, since it is crucial for these institutions to maintain their popularity with the public.
3
Yang, Aijun, and 杨爱军. "Visitor perception of the natural environment: a case of the Laojunshan mountain areas, China." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B47147994.
Full text
4
Craggs, R. "Tourism and urban regeneration : an analysis of visitor perception, behaviour and experience at the quays in Salford." Thesis, University of Salford, 2008. http://usir.salford.ac.uk/14889/.
Full textAbstract:
Following the loss of heavy, manufacturing industry in many industrial areas in the 1970s and 1980s, tourism has featured extensively in urban and wateriront regeneration policy because of its ability to generate substantial economic benefits to destination communities. There is now an extensive literature covering urban tourism and dockland regeneration, but visitors' perceptions of urban waterfront destinations and their on-site behaviour and d experience remain largely unexplored. Additionally, whilst there is now a substantial body of literature relating to tourism's economic impact at the macro level, less is known about tourism expenditure at destination and sub-destination levels.
5
Emanuel, Louise Coralie. "An investigation of visitor and resident place perceptions of Mid Wales, and an evaluation of the potential of such perceptions to shape economic development in the area." Thesis, Open University, 1997. http://oro.open.ac.uk/57683/.
Full textAbstract:
The research investigates visitor and resident place perceptions of Mid Wales and evaluates the potential of such perceptions to shape economic development in the area. A review of literature indicated a need for an holistic approach to place. It was suggested that a starting point towards achieving this is to envisage place as three components - the real, the expected and the perceived. The real place is described using secondary statistical information and maps of the area. the expected place is described using topographical writing and guide books. The perceived place is examined through a combination of questionnaires and interviews with residents and visitors. These investigate perceptions of the landscape and economy of Mid Wales. The 'perceived places' of residents and visitors are described. A number of agencies based in Mid Wales were also interviewed to examine i) their perceptions of Mid Wales' ii) the way in which visitor and resident perceptions are incorporated into the policy development process, and, iii) their responses to some of the preliminary outcomes of the research. The research concluded that both residents and visitors have well defined, but different place perceptions of Mid Wales. Visitor perceptions are more affected by the expected place than the real, whilst resident perceptions are more affected by the real place than the expected. There are currently few mechanisms by which place perceptions are directly incorporated into the development process. However, the place perceptions of agencies were found to be close to those of the groups they represented; it is suggested that place perceptions are fundamental truths shared by groups, which are so strong as to actually subconsciously drive the policy development process. Policy implications are suggested, as are ideas for future research.
6
Lee, Nathaniel H. "Environmental Impacts of Camping in Low Regulatory Wilderness: Geographic Patterns in the Allegheny National Forest and their Implications for Management." Kent State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=kent1523442960070504.
Full text
7
Maior-Barron, Denise Cristina Ioana. "Petit Trianon and Marie Antoinette : representation, interpretation, perception." Thesis, University of Plymouth, 2015. http://hdl.handle.net/10026.1/3930.
Full textAbstract:
This interdisciplinary thesis belongs to Marie Antoinette studies. The contemporary dissonant commodification of the controversial historical character of the last Queen of France, detected at her former home, Petit Trianon, drives the course of the thesis research. Considering the complexity and controversy of the subject, the thesis seeks to make a contribution to extant scholarship by clarifying important modern history issues through a fresh approach: by using art history as an indicator in assessing the historical truth of the narrative of Petit Trianon, the residence identified as home to the last Queen of France. The thesis examines Petit Trianon and Marie Antoinette in the context of four major narratives - the historical, cinematic, architectural and heritage narratives - relevant to the contemporary heritage interpretation of Petit Trianon as well as its visitor perceptions. In addition to sourcing evidence for the arguments originating in art history information, the thesis relies on the data collection provided by a tailor-made survey for the topic, placing the results in the wider context of a hermeneutical interpretation of data found in either history or contemporary popular culture. The array of Marie Antoinette’s images detected by the analysis charts the commodification of this historical character at Petit Trianon: its production and consumption. It is through the assessment of this commodification that the present thesis reveals the misconceptions surrounding the historical character best known as Marie Antoinette. The thesis argues that the true role of the last Queen of France was successfully obscured through juxtaposition with her perception by the French collective memory. In other words, the perception of Marie Antoinette had subverted historical truth. Furthermore, the commodification of her historical character is perpetuated in an endless chain of representations fuelled by postmodern consumerism.
8
Cameron, S. M. "First-time mothers and their health visitors : perceptions of a home visit." Thesis, University of Edinburgh, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.642345.
Full textAbstract:
This study explores the relationship between mother and health visitor through their perceptions of a home visit. The aims are to describe the interaction on a routine home visit, compare the perceptions of the participants, and explore their contrasting views. Through this exploration the worth of home visits is demonstrated. The theoretical framework was based in ethnomethodology, and multiple methods of data collection provided complimentary data. Fifteen volunteer health visitors carried out a routine home visit to three primiparous mothers with babies aged 2 and 6 months. This visit was tape recorded. Both client and health visitor were interviewed by the researchers and were asked to complete a short questionnaire after the visit. There was a similarity of views about the visit and their relationship. Both participants judged a successful visit in terms of the client's response and satisfaction. To the health visitors, a good relationship was not necessary to carry out their work. To the clients, however, a good relationship was of prime importance. A non-authoritarian approach was much preferred. The interaction revealed a number of verbal ploys whereby the participants guided the interaction. The health visitors, while possessing more power than they think they have, use many strategies to ensure acceptability. The home visit is demonstrated as an interaction of some complexity, providing possibilities for the exchange of information, with the client very much an equal participant. The research ends with recommendations for management, education, and practice, one of which is the use of a health visitor/client contract, which might effectively explain the service offered, and assist in forming good relationships.
9
Chopin, Adrien. "Traitements probabilistes implicites de la perception ambigüe en vision humaine." Paris 5, 2011. http://www.theses.fr/2011PA05H121.
Full textAbstract:
La bistabilité est une surprenante alternance de l’apparence d’un stimulus entre deux interprétations de ce stimulus. Elle a lieu lorsqu’une stimulation physique est très ambigüe, comme lorsque l’on présente une image dans un œil très différente de l’image de l’autre œil (rivalité binoculaire). La bistabilité implique de (1) décider que le stimulus est bistable ; (2) sélectionner le premier percept ; (3) supprimer l’autre percept ; (4) décider quand alterner. Tandis que les deux dernières étapes sont très étudiées, les deux premières étapes restent encore mal connues. Ici, nous approfondissons les connaissances sur les mécanismes qui décident la rivalité plutôt que la fusion (étude 4), sur le choix du premier percept (études 1 à 5) et sur la dynamique bistable (étude 1 et 3). Notamment, la littérature actuelle favorise une explication bas-niveau de la rivalité binoculaire, c’est-à-dire ayant lieu dès les premières étapes de traitement cognitif, avant tout traitement complexe. Le but principal de cette thèse est de clarifier l’influence potentielle sur la rivalité de traitements probabilistes et donc plus complexes. J’ai étudié (1) l’influence de l’utilité d’une interprétation sur la bistabilité ; (2) la manière de changer les préférences bistables ; (3) la spécificité du ou des premiers percepts ; (4) l’influence d’illusions d’orientations sur la stéréo-fusion et la rivalité ; (5) l’influence du passé sur le percept bistable, sous la forme de prédictions du système. J’ai trouvé : (1) qu’une interprétation utile est perçue plus souvent sur le premier percept d’un épisode de rivalité binoculaire. Cette influence est implicite, non-attentionnelle et implique des calculs probabilistes sur l’utilité d’un percept. (2) que l’utilité peut modifier les préférences en rivalité de transparence de mouvement et que ces préférences ont donc pour rôle de favoriser la réussite à une tâche. (3) que le premier percept de la rivalité binoculaire n’est pas le seul à être différent des autres et que le contrôle volontaire est plus fort au début d’un épisode bistable pour le percept non-favorisé. (4) que l’étape de contraste illusoire entre orientations occupe une position hiérarchique plus basse que les étapes de vision stéréoscopique et de rivalité. (5)une forte corrélation positive entre le passé visuel ancien et l’orientation perçue en rivalité binoculaire. Nous expliquons ce résultat par un modèle d’adaptation prédictive selon lequel le système visuel prédit le prochain percept tel que la distribution récente des orientations corresponde à une distribution plus ancienne. Ici encore, des calculs probabilistes sont impliqués. En résumé, ce travail démontre principalement l’existence de traitements probabilistes en perception ambigüe, par l’intermédiaire d’un calcul d’utilité et de prédictions dans l’adaptationBistability is a surprising alternation of the appearance of a stimulus between two interpretations of that stimulus. It occurs when a physical stimulation is ambiguous, e. G. When very different images are displayed to each eye. Bistability involves (1) a decision that the stimulus has to be bistable; (2) a selection of the first percept; (3) a suppression of the other percept; (4) a decision of when reversing the percepts. While the two first steps have been widely studied, a lot remain to be discovered on the two last steps. Here, we focus on the mechanisms that decide for rivalry rather than fusion (study 4), that choose the first percept (studies 1 to 5) and on bistable dynamics (studies 1 and 3). Moreover, the literature tends to support a low-level explanation of binocular rivalry, i. E. Occurring as soon as the first steps of cognitive computation, before any complex calculation. One of the main goals of this work is to clarify the potential influence of probabilistic processes that may be more complex. I studied (1) the influence of one interpretation’s usefulness on bistability; (2) the way of changing bistable preferences; (3) the specificity of the first percepts; (4) the influence of orientation illusion on stereo-fusion and rivalry; (5) the influence of past stimuli on the bistable percept through predictions. I found that: (1) One useful interpretation is perceived more often on the first percept of a bistable episode of binocular rivalry. This influence is implicit, not attentional and implies probabilistic computations about percept usefulness. (2) Usefulness can change preferences for motion transparency depth rivalry: those preferences are therefore aimed at increasing the observer’s success to a task. (3) The first percept of binocular rivalry is not the only one to be different from the others and that voluntary control is more effective at the beginning of a bistable episode for the not preferred percept. (4) The step of illusory contrast between orientations occurs lower in the hierarchy relative to stereopsis and binocular rivalry. (5) A strong positive correlation between the remote visual past and the current perceived orientation in binocular rivalry. We explained this finding with a model of predictive adaptation according to which the visual system predicts the next percept following the following rule: the recent distribution of orientations has to match the remote past distribution. Here again, probabilistic computations are involved. To summarize, this work mainly uncovers the existence of probabilistic computations in ambiguous perception through usefulness computation and predictions in adaptation
10
Moar, Kathryn. "Determinants of visitors' perception of the Adelaide Zoo /." Title page, contents and abstract only, 1987. http://web4.library.adelaide.edu.au/theses/09SPS/09spsm687.pdf.
Full text
11
Luckman, Adrian John. "Active perception in machine vision." Thesis, University of York, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280521.
Full text
12
Sefela, Farren. "Biting the hand that feeds you: Visitor perceptions of visitor-baboon interaction in the Cape Peninsula." University of the Western Cape, 2020. http://hdl.handle.net/11394/7953.
Full textAbstract:
Masters of ArtThe rapid increase in urbanisation and tourism in the Cape Peninsula has increased the rate of human-wildlife interaction. The Cape Peninsula is unique in terms of placing urban areas next to protected natural areas with no physical barriers, thus allowing animals, especially baboons, to travel between the two areas, occasionally leading to conflict between humans and wildlife. Visitors to popular tourist sites may also actively participate in feeding baboons or through negligence by leaving food items in the open. As a result, changing the habits of the baboons as human food and food waste are seen as the preferred option in terms of dietary habits. The main aim of this study was to investigate the perceptions and social construction of visitors in the Cape Peninsula towards baboons at tourist sites. Social constructionist theory was used as the theoretical framework for the study, which looks at the way people perceive nature and wildlife, which is unique to each person. The study uses an exploratory sequential mixed methods design, with a qualitative section that includes three semi-structured interviews, followed by a quantitative section consisting of a questionnaire survey, with 201 questionnaires being completed. The survey was conducted at key tourist sites around the Cape Peninsula that are well known for baboon sightings, including Bordjiesrif Picnic Site, Buffels Bay viewpoint, Cape of Good Hope/Cape Point and Dias Beach. The study used discourse analyses and the Statistical Package for the Social Sciences (SPSS) to analyse the data, which allowed for ideas to be labelled and linked to opinions in the literature, and patterns identified during the data collection. Visitors viewed tourism spaces as anthropocentric areas, and thus perceived baboon-visitor interactions through conditional acceptance. Visitor perceptions and social construction of baboon-visitor interactions may be positive when conditional acceptance is adhered to, and negative when conditional acceptance is broken. Recommendations for further research includes more research on non-consumptive tourism activities and its impact on human-wildlife interactions, with a need for more literature on the influence of education on people’s attitudes towards wildlife, and finally, more research that focuses on the changing behavioural ecology of baboons, due to an increase in tourism/visitation.
13
Iafrate, David. "Prise d’informations et stratégies de recherche visuelle : mouvements et contrôle oculaire dans des tâches visuelles dynamiques." Bordeaux 2, 2007. http://www.theses.fr/2007BOR21508.
Full textAbstract:
Les enjeux d’aujourd’hui nous amènent à nous intéresser à un facteur qui semble pertinent dans le performance en football : les stratégies de recherche visuelle. Parce que la vision influence la capacité d’un athlète à être performant dans une tâche sportive, l’un des objectifs principaux de ce travail de recherche est de déterminer si les experts et les novices utilisent des comportements de recherche visuelle similaires ou différents. La plupart des recherches se sont focalisées sur l’identification des habiletés visuelles (perceptives) nécessaires en sport ; ces habiletés perceptives jouent un rôle également crucial dans la vie de tous les jours comme par exemple en conduite automobile. En effet, l’habileté à anticiper un événement basé sur des informations présentées précocement, est une des plus importantes habiletés sous tendant la performance motrice. Par exemple, en football, la capacité à anticiper les intentions de l’adversaire sur la base de signaux posturaux (genoux, hanche), fournit un avantage crucial pour la performance. La plupart des travaux de recherche sur l’expertise perceptive (et cognitive) ont adopté un cadre de processus informationnel et utilisé le paradigme expert-novice. L’originalité de notre étude réside dans la mise en place expérimentale. En effet, les données sur les stratégies de recherche visuelle recueillies par les études précédentes l’ont été en situation fermées, en utilisant des vidéos, des photos, ou des diapositives. Nous proposons ici d’enregistrer les mouvements visuels du joueur en situations réelles de jeu. Pour cela, nous utiliserons un Eye Tracker, permettant d’enregistrer les mouvements oculaires des joueurs. Nous nous intéresserons principalement aux comportements de scanning visuel utilisés par les novices et les experts au cours de différents types de tâches. Nous étudierons la scène visuelle inspectée par chaque fixation et nous identifierons ce que le joueur regarde dans chaque fixation. La comparaison entre jeunes (experts/novices) et adultes (experts/novices) nous permettra alors d’envisager un programme d’apprentissage perceptif afin d’améliorer le sens « tactique » du joueur, au cours de sa formationThe sporting stakes of today lead us to interest us in a factor which seems relevant in the performance in football: strategies of visual search. Because the vision influences the capacity of an athlete to being powerful in a sporting spot, on of the principal objectives of this research task is to determine if the experts and the beginners use behaviours of visual search or different. The majority of search was focused on the identification of the visual skills (perceptive) necessary in sport; these perceptive skills play and also crucial part in the life of the every day such as for example in automobile control. Indeed, the skill to anticipate a future event based on information presented precociously, is one of the most important skill under tightening the driving performance. For example, in football, the capacity to anticipate the intentions of the adversary on the basis of postural signal (knees, hip), provides a crucial advantage for the performance. The majority of the research tasks on the expertise perceptive (and cognitive) adopted a framework of process informational and used the paradigm expert-beginner. The originality of our study lies in the experimental installation. Indeed, the data on the strategies of visual search collected by the preceding studies were it in closed situations, by using videos, photographs or slides. We propose here to record the visual movements of the player in real situations of play. For that, we will use Eye Tracker, allowing recording the ocular movements of the players. We will be interested mainly in the behaviours of visual scanning used by the beginners and the experts during various types of tasks. We will study the visual scene inspected by each fixing and we will identify what the player looks in each fixing. The comparison between young people (experts/beginners) and adults (experts/beginners) will then enable us to plan a program of perceptive training in order to improve the “tactical” direction of the player, during his formation
14
Haarhoff, R., and A. J. Strydom. "Price perceptions of international visitors to South Africa." Journal for New Generation Sciences, Vol 8, Issue 3: Central University of Technology, Free State, Bloemfontein, 2010. http://hdl.handle.net/11462/567.
Full textAbstract:
Published ArticleThe question often arises as to how aware consumers are of prices of products and how much they are willing to pay for particular products. Research indicates that 'excellent value for money' is rated as the number one priority by consumers. In economically challenging conditions, tourists have become more price sensitive and prices charged will influence their decision-making. South Africa, as a destination, must ensure that prices charged for tourism products meet tourists' expectations and therefore research on the price perceptions in relation to major products that international tourists spend money on whilst on holiday, becomes important. As point of departure, it should be possible to establish the difference, if any, between what the tourists expected to pay for specific tourism products, and what they actually paid.
15
Lustman, Francis. "Vision stéréoscopique et perception du mouvement en vision artificielle." Paris 11, 1987. http://www.theses.fr/1987PA112443.
Full textAbstract:
On traite le problème de la reconstruction de l'environnement tridimensionnel à partir d'un certain nombre de vues de cet environnement. Il est montre comment l'usage de trois caméras simplifie le problème de la mise en correspondance stéréo et un algorithme simple et efficace de stéréovision est proposé. Il est ensuite étudie le problème du calcul du mouvement et de la structure de l'environnement par appariement de droites dans trois vues prises successivement par une même caméra
16
Lustman, Francis. "Vision stéréoscopique et perception du mouvement en vision artificielle." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37607531q.
Full text
17
Claro, Marisa Fernandes. "Visita domiciliária de enfermagem no puerpério." Bachelor's thesis, [s.n.], 2014. http://hdl.handle.net/10284/4440.
Full textAbstract:
Projeto de Graduação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Licenciada em EnfermagemO puerpério é considerado por muitos como um momento de adaptação física, psicológica e social. O período pós-parto demonstra-se ser uma fase onde a puérpera se depara com bastantes dificuldades e dúvidas quanto à sua condição. É momento cheio de peculiaridade e de vulnerabilidade na vida da mulher, em que a mesma precisa ser orientada quanto às mudanças e às adaptações que esse período impõe. A visita domiciliária tem-se demonstrado ao longo do tempo, uma estratégia adotada pelos enfermeiros para um melhor acompanhamento da puérpera e da família nesta fase. Esta permite aos profissionais de saúde, guiar, apoiar e aconselhar os pais a adquirir atitudes atitudes e comportamentos que lhe permite vivenciar este período sem complicações. Face a estas constatações surgiu a inquietação de conhecer a perceção das mulheres quanto à visita domiciliária de enfermagem no puerpério, assim como a relação desta com a idade, as habilitações literárias, a vigilância pré-natal e a frequência do curso de preparação para o parto/parentalidade. De forma a dar resposta a estas questões, foi realizado um estudo em meio natural, descritivo-exploratório com abordagem quantitativa. A colheita de dados foi realizada através da aplicação da EAVDPP, entre o dia 26 de Março de 2014 e 23 de Maio de 2014, na USF Lethes. Dos resultados obtidos pode se concluir que as puérperas consideram que a visita domiciliária no puerpério carece de uma grande importância. A maioria das mulheres considerou a visita domiciliária como boa, mas existe ainda uma grande percentagem de puérperas que a considera insuficiente e considera que é necessário melhorar alguns domínios.
The puerperium is considered by many authors as a moment f physical, psychological and social adaptation. The postpartum period demonstrates to be a phase in which the recent mother is faced with several difficulties and doubts regarding its condition. It is a moment full of peculiarities and doubts regarding its condition. It is a moment full of peculiarities and vulnerability in a woman´s life, in which she needs to be guided as to the changes and the adjustments that this period imposes. The house visit has, throughout time, been proved to be a strategy a strategy by the nurses for a better supervision of the recent mother and the family at this stage. This strategy allows health professionals to guide, support and advises parents to acquire attitudes and behaviors which allow them to experience this period without so many complications. Considering this information the concern of knowing the perception of the recent mother regarding the nurses house calls arose, as well as its relationship with age, academic qualifications, prenatal vigilance and the childbirth/parenting training course attendance. In order to return to these questions, a study was conducted in the natural surroundings, descriptive-exploratory with a quantitative approach. The data collection was carried out through the application of the EAVDPP, between Marc 26th 2014 and May 23rd 2014, at USF Lethes. From the results obtained we can conclude that recent mothers consider that the house visit in puerperium stands in need or a great importance. Most recent mothers considered the house visit as good, but there is still a large percentage of recent mothers who consider it insufficient and, moreover, that it is necessary to improve some areas.
18
Bossé, Anne. "L'expérience spatiale de la visite : engagement dans l'action, épreuve collective et transformations urbaines." Thesis, Tours, 2010. http://www.theses.fr/2010TOUR1501/document.
Full textAbstract:
Cette thèse saisit comme une opportunité d'enquête, le constat de l'absence de questionnement global sur la visite. Posée comme expérience spatiale particulière, la visite est renseignée comme un registre de la spatialité des individus. Cette recherche est structurée en deux parties. La première est un travail de construction d'une approche géographique de la visite et du visiteur. Volontairement exploratoire, elle compile et collecte les exemples et les cas, et remet cette expérience dans le contexte du XIXe siècle. La deuxième partie restitue les données empiriques en privilégiant, arrimée aux courants pragmatistes, le visiteur en action, la visite dans son déroulement et l'activité de transmission du « voir la ville en train de se faire ». Les actes d'énoncer, de voir sont ainsi saisis depuis leur contexte de production obligeant à prendre en considération toute l'exigence de la situation comme la dynamique commune. Le dernier chapitre revient sur l'urbain à l'épreuve de la visiteThis doctoral thesis has exploited the opportunity to study the known fact that exploring the act of visiting in itself has been somewhat neglected. This act understood as a unique spatial experience is analysed as a register of the spatiality of individuals. This research piece is divided into two parts. The first part is a study built around a geographical approach of the act of visiting and the visitor. Pinned th the pragmatic vein, the second part brings toghether empirical data, prioritising the visitor in his/her process, the visit in its process and the activity of « seeing th town/city in construction ». During the visit, discussing and viewing are acts taken into account from their very contextual origins, forcing us to consider every demand revolving around this situation as a common driving force. The final chapter conceptualised urban space through the lens of the visit
19
Wassenberg, Katherine Elizabeth. "Mount San Jacinto State Park Visitor Attributes, Preferences, and Perceptions." DigitalCommons@CalPoly, 2009. https://digitalcommons.calpoly.edu/theses/91.
Full textAbstract:
The purpose of the study was to assess Mount San Jacinto State Park visitor attributes, visit attributes, preferences, and perceptions. Visitor surveys were conducted at two predetermined points within Mount San Jacinto State Park Wilderness Area, the entrance to Long Valley and adjacent to the Long Valley Ranger Station, during summer 2008. Three hundred and seventy-eight subjects completed one of the two visitor surveys (97.68% response rate), 256 (67.7%) completed the Long Valley Survey and 122 (32.3%) completed the Wilderness Survey. The subjects were mostly male, married, from California, and White or Latino/Hispanic. The average age was 45 years old with some college education and relatively high levels of income (42.4% reported annual household incomes above $100,000). The mean number of previous park visits was 15 and the subjects visited the park an average of 3.74 times in 2008. The amount of time spent in the wilderness was an average of 4.68 hours. Most visitors participated in photography, wildlife viewing, shopping at the gift shop, bird watching, visiting the visitor center, eating at the snack bar, and hiking. The subjects agreed that conditions in the park are safe and that there are adequate ranger patrols. Wilderness visitors had significantly higher agreement scores for adequate ranger patrols, too many people at Mountain Station, and that they prefer to see fewer people in the park. The overall crowding mean score was slightly below “somewhat crowded” with Wilderness visitors reporting significantly higher levels of crowding than Long Valley visitors. Visitor perceptions of problems in the park were rated “not a problem” for all items; however, Wilderness visitors perceived encounters of large groups on a trail and restrooms needing cleaning to be more of a problem than was perceived by Long Valley visitors. Worn trails, side trails, and erosion along trails were the conditions most noticed by the subjects. Significantly more Wilderness visitors than Long Valley visitors noticed erosion along trails and tree root exposure on trails.
20
Ayhan, I. "Vision-based mechanisms of time perception." Thesis, University College London (University of London), 2010. http://discovery.ucl.ac.uk/623426/.
Full textAbstract:
Perceived duration of brief intervals can be altered in a specific spatial location in the visual field by adaptation to oscillatory motion or flicker (Johnston et al, 2006, 2008). In the first experiment here, the spatial tuning of adaptation-based temporal distortions was investigated by varying the spatial separation of adaptor and test. It was found that adaptation-based apparent duration compression is tightly tuned to the location of the adaptor and that the effects of adaptation on perceived duration are dissociable from those on temporal frequency although the spatial tuning of these effects was similar. In a second experiment, the frame of reference (retinotopic versus spatiotopic) of adaptation effects was investigated using pursuit and saccadic paradigms. It was observed a robust time compression following a purely retinotopic adaptation. In two different saccadic paradigms, no significant effect was observed after spatiotopic adaptation. No interocular transfer was found. In a third experiment, the effect of the luminance signal on adaptationbased duration compression was investigated using luminance-modulated and isoluminant stimuli. It was shown that the apparent duration compression following temporal frequency adaptation is specific to luminance-modulated stimuli and that the effect disappears at isoluminance. The differences in visibility between luminance-modulated and isoluminant stimuli could not explain the discrepancy. At isoluminance, duration compression was recovered for chromatic backgrounds. The final experiments investigated the effect of simultaneous surrounds on the perceived duration of inner patches. It was found that perceived duration of a mid-temporal frequency counterphase modulated flicker is almost significantly expanded if embedded within a high temporal frequency context; whereas a low temporal frequency context can only induce a mild expansion. In an adaptation paradigm, counterphase modulated flicker was found to induce smaller duration compression compared to drifting stimuli. These results provide further evidence for a difference between mechanisms modulating duration and temporal frequency.
21
Gampher, John Eric. "Perception of motion-in-depth induced motion effects on monocular and binocular cues /." Birmingham, Ala. : University of Alabama at Birmingham, 2008. https://www.mhsl.uab.edu/dt/2009r/gampher.pdf.
Full textAbstract:
Thesis (Ph. D.)--University of Alabama at Birmingham, 2008.Title from PDF title page (viewed Mar. 30, 2010). Additional advisors: Franklin R. Amthor, James E. Cox, Timothy J. Gawne, Rosalyn E. Weller. Includes bibliographical references (p. 104-114).
22
Kundlatsch, César Augusto. "A PERCEPÇÃO DO VISITANTE NO PARQUE ECOTURÍSTICO MUNICIPAL SÃO LUIS DE TOLOSA EM RIO NEGRO - PR." UNIVERSIDADE ESTADUAL DE PONTA GROSSA, 2015. http://tede2.uepg.br/jspui/handle/prefix/577.
Full textAbstract:
Made available in DSpace on 2017-07-21T18:15:21Z (GMT). No. of bitstreams: 1
Jasmine Cardozo Moreira.pdf: 5455170 bytes, checksum: 1b22241f34bc2ae9ce2bcfc91067156d (MD5)
Previous issue date: 2015-11-24This project had the goal identify the perception of visitors of the Ecotouristic Municipal Park São Luis Tolosa ( PEMSLT ), located in the city of Rio Negro-PR during the year of 2014. Analyzed how the old Seraphic Seminary revitalization process that was active between the 1910s to 1970, transformed the place into an important integral protection conservation unit. It is now considered the main municipal park visitation and also disseminating awareness of preservation and conservation of native species, and a proposal for inter-relations between society and the environment as well as ecotourism. It also proposed public use strategies taking into account its principles of creation, trying to analyze the tourist nature of the protected area based on theoretical frameworks and perception of visitors by relating their habits and attitudes in PEMSLT. Also tried to verify how environmental education is carried out in the protected area, as an instructional tool to boost the participation of urban and tourism collective within the park. The methodology used was interviews to visitors from April to September 2014, with the development of direct and indirect questions, applied to visitors during their tour and visitation, and also behavioral analysis of visitors during their activities in the park. Most visitors realize that the most significant theme of PEMSLT's environmental focus, with emphasis on animal and plant species present. Highlight the preservation of the area in harmony with the architectural beauty of these buildings. However, visitors identify management needs in the direction of improvement of signs, constant presence of monitors trails enrichment of visitation and environmental awareness, greater coordination between the different spheres of the management team, improved fast-food infrastructure, responsibility and suggestions for the visitation trails.
Este trabalho teve por meta identificar a percepção dos visitantes do Parque Ecoturístico Municipal São Luís de Tolosa (PEMSLT), localizado no município de Rio Negro-PR, durante o ano de 2014. Analisou como o processo de revitalização do antigo Seminário Seráfico que esteve em atividade entre as décadas de 1910 a 1970, transformou o lugar em uma importante unidade de conservação de proteção integral. Atualmente é considerado o principal parque de visitação do município e também o disseminador da sensibilização de preservação e conservação de espécies nativas, e uma proposta de inter-relações entre sociedade e meio ambiente e também do ecoturismo. Propôs também estratégias de uso público levando em consideração seus princípios de criação, procurando analisar a natureza turística da unidade de conservação baseando-se em referenciais teóricos e na percepção dos visitantes, relacionando seus hábitos e atitudes no PEMSLT. Também procurou verificar como a educação ambiental é realizada na unidade de conservação, como ferramenta instrucional para dinamizar a participação do coletivo urbano e turístico dentro do parque. A metodologia utilizada foi a de entrevistas aos visitantes no período de abril a setembro de 2014, com a elaboração de perguntas diretas e indiretas, aplicadas aos visitantes, durante seu passeio e visitação, e também análise do comportamento dos visitantes durante suas atividades no parque. A maior parte dos visitantes percebeu que a temática mais expressiva do PEMSLT é o de enfoque ambiental, com destaque às espécies animais e vegetais presentes. Destacam a preservação da área em harmonia com a beleza arquitetônica das edificações presentes. Contudo, os visitantes identificaram necessidades de gestão no sentido de melhoramento das sinalizações, presença constante de monitores de trilhas para enriquecimento da visitação e da sensibilização ambiental, maior articulação entre as diferentes esferas da equipe de gestão, melhorias na infraestrutura de lanchonetes, de receptividade e sugestões para as trilhas de visitação.
23
Costa, Robson Xavier da. "Percep??o Ambiental em Museus Paisagens de Arte Contempor?nea: a legibilidade dos museus Inhotim/Brasil e em Serralves/Portugal avaliada pelo p?blico/visitante." Universidade Federal do Rio Grande do Norte, 2014. http://repositorio.ufrn.br:8080/jspui/handle/123456789/12320.
Full textAbstract:
Made available in DSpace on 2014-12-17T13:56:55Z (GMT). No. of bitstreams: 1
RobsonXC_TESE.pdf: 8364530 bytes, checksum: 7f1436ee51fbb9bdf5725cecb3f64336 (MD5)
Previous issue date: 2014-03-14This thesis nalyzes the wayfinding in Landscape Museum of Contemporary Art (MPAC), based on the Institute of Contemporary Art CACI, Minas Gerais, Brazil and the Museum of Contemporary Art of the Serralves Foundation, Porto, Portugal. The study focuses on the interrelationship of the public/visitors with the landscape, architecture and contemporary art museums in these, in order to understand visual perception and apprehension of such an environment for their users. For both were confronted documentation (visual and written) and people talk. The main hypothesis put forward is that the audience/visitor MPAC appreciates the interrelationship between the natural environment (park/garden) and built environment (the works of contemporary art and the galleries), giving equal value to both. To complement this, a second hypothesis is that during the visit to MPACS, visitors define their paths spontaneously, but strongly influenced by existing visual indicators (maps, signage and striking landscape elements), which facilitate the readability of space, which also contribute to the offered services and the experiences of similar institutions. The analytical basis of the research used the concepts of legibility (LYNCH, 2009), wayfinding (GIBSON, 2009; ARTHUR, PASSINI, 2002; WEISMAN, 1982), Experiential Cotinnum (TUAN, 1985), Space Bound (CRUZ PINTO, 2007) and habitus (BOURDIEU, 1992). Methodologically was used qualitative research (DEMO 2000) by means of a case study (YIN, 2005; STAKE, 1999) and participant observation (WHYTE, 2005). In the two institutions interviews with researchers and curators, behavior observation and questionnaires from employees, trainees, monitors and the public/visitor of the two museums were performed. Although partially referende the initial hypothesis, the research showed that the public/visitor value appears more natural environments, they experience a greater intensity and in addition to the factors listed in the second case, your perception and definition of paths suffer significant influence of emotional relations established with space. Generally the audience/visitor adapts easily to different demands of contemporary art exhibition in the two museums and the built environment (park/garden and museum) interferes with your reading path during the visit, perceived by the public/visitor condition as a factor that favors the enjoyment of works on different mounts (wayfinding), though often become a factor that hinders the legibility of the building and its built environment
Para responder ? pergunta de partida como as pessoas percebem o ambiente de Museus Paisagem de Arte Contempor?nea (MPAC) e se orientam neles? , esta tese investigou a percep??o ambiental de usu?rios de dois museus: o Instituto de Arte Contempor?nea do Inhotim, Minas Gerais, Brasil e a Funda??o de Serralves, Porto, Portugal. O estudo focaliza a interrela??o do p?blico com o espa?o de cada MPAC (conjunto de sua paisagem, arquitetura e arte contempor?nea), focando especificamente quest?es de wayfinding (navegabilidade ambiental), de modo a compreender como tal ambiente ? apreendido pelos visitantes. Para tanto foram confrontadas informa??es provenientes da documenta??o (visual e escrita) das institui??es e dos depoimentos (falas) dos usu?rios. A principal hip?tese defendida ? que o p?blico/visitante de MPAC valoriza a interrela??o entre o ambiente natural (parque/jardim) e o ambiente constru?do (galerias e obras de arte contempor?neas), atribuindo igual valor a ambos. Em complementa??o a esta, uma segunda hip?tese indica que durante a visita aos MPACs, os visitantes definem seus trajetos de maneira espont?nea, por?m fortemente influenciados pelos indicadores visuais existentes (mapas, sinal?tica e elementos marcantes da paisagem), os quais facilitam a legibilidade do espa?o, para o que tamb?m contribuem os servi?os oferecidos e as experi?ncias vivenciadas em institui??es semelhantes. A base anal?tica da pesquisa recorreu aos conceitos de Legibilidade Ambiental (LYNCH, 2009), wayfinding (GIBSON, 2009; ARTHUR, PASSINI, 2002; WEISMAN, 1982), Continuum Experiencial (TUAN, 1985), Espa?o Limite (CRUZ PINTO, 2007) e Habitus (BOURDIEU, 1992). Metodologicamente foi utilizada a pesquisa qualitativa (DEMO, 2000) por meio de estudo de caso (STAKE, 1999; YIN, 2005) e observa??o participante (WHYTE, 2005). Nas duas institui??es foram realizadas entrevistas com pesquisadores e curadores, observa??o de comportamentos e aplica??o de question?rios com o p?blico/ visitante, os funcion?rios, estagi?rios e monitores. A investiga??oreferendou parcialmente a hip?tese inicial, mostrando que o p?blico/visitante aparenta valorizar mais os ambientes naturais, que s?o vivenciados em maior intensidade. Quanto ? segunda hip?tese, al?m dos fatores indicados, a percep??o ambiental e a defini??o de trajetos pelos usu?rios sofre significativa influ?ncia das rela??es emocionais que estabelecem com o espa?o. De maneira geral, em termos de wayfinding verificou-se que o p?blico/visitante: (i) se adapta com facilidade ?s diferentes demandas expositivas da arte contempor?nea nos dois museus; (ii) percebe que a frui??o das obras ? favorecida pelo ambiente vivenciado (espa?o constru?do e parque/jardim), o qual tem interfer?ncia na sua leitura do trajeto durante a visita; (iii) em muitas situa??es, a grande atratividade dos usu?rios pelas obras de arte e pelo parque/jardim dificultam a legibilidade das edifica??es existentes e do seu espa?o interno
24
Townsend, Amanda. "Attitudes, perception and behaviour among visitors at the Adelaide Zoo /." Title page, table of contents and abstract only, 1988. http://web4.library.adelaide.edu.au/theses/09ARPS/09arpst747.pdf.
Full text
25
Skelton, Alice Elizabeth. "Infant colour perception." Thesis, University of Sussex, 2018. http://sro.sussex.ac.uk/id/eprint/77041/.
Full text
26
Stoddart, Evan. "Computer Vision Techniques for Automotive Perception Systems." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1555357244145006.
Full text
27
Machrouh, Joseph. "Perception attentive et vision en intelligence artificielle." Paris 11, 2002. http://www.theses.fr/2002PA112301.
Full textAbstract:
Le travail présenté dans cette thèse s'inscrit dans la problématique du développement d'agents logiciels dotés de capacités perceptives. Munir de tels systèmes de capacités exploratoires suppose dans un premier temps la détermination des points d'intérêt de la scène visuelle. Afin de pouvoir se déplacer dans la scène, on distinguera les traitements en champ large et basse résolution des traitements focaux en haute résolution. On sépare ainsi la phase d'exploration associée à la recherche des points d'intérêt de la phase d'exploitation associée à la reconnaissance. Les points d'intérêt retenus sont constitués de maxima d'énergie calculés à l'aide de filtres en ondelettes couvrant une gamme d'orientations et de fréquences spatiales. Les plus basses fréquences sont utilisées pour déterminer les saillances périphériques. Nous montrons que les axes d'une Analyse en Composantes Principales (ACP) d'un échantillon représentatif de scènes naturelles constituent un système de projection permettant de catégoriser les points d'intérêt d'une scène quelconque. Ce système dispose ainsi de plusieurs points de vue de la scène aptes à guider ses mécanismes attentionnels. L'énergie de ces points d'intérêt selon différentes orientations et fréquences spatiales est alors utilisée pour les indexer. Nous avons montré que les composantes de basse fréquence de cette représentation indexée sont suffisantes pour biaiser les saillances de la scène en faveur de cibles similaires aux représentations mémorisées et assez robustes pour conserver cette propriété dans une séquence vidéo soumise à de fortes variations de contraste. Nous démontrons ainsi que des points d'intérêt fondés sur une analyse fréquentielle multi-échelle peuvent être utilisés pour contrôler des saccades exploratoires par un mécanisme ascendant; la part basse fréquence d'une telle représentation peut contrôler de façon descendante des saccades guidées par la cible recherchéeThe work presented in this thesis deals with the development of software agents endowed with perceptive capacities. To provide such a system with exploratory capacities supposes the determination of interest points in the scene. In order to be able to move in the image, one will distinguish a low-resolution wide field processing and a high resolution focal processing. One thus separates the exploration phase associated to the search of interest points from the exploitation phase associated to recognition recognition. The selected points consist of energy maxima computed using wavelet filters covering a range of orientations and frequencies. The low frequencies are used to determine the peripheral saliency. Principal Component Analysis (PCA) projection system was computed from a representative sample of natural scenes. This system was used to categorize the interest points of an unspecified scene. The system thus can use several points of view to guide its attentionnal mechanisms. The energy of these interest points according to various orientations and space frequencies is then used to index them. We showed that the low frequency components of this indexed representation are sufficient to bias the saliency of the scene in favor of targets similar to the representations memorized. They are also sufficiently robust to preserve this property in a video sequence subject to strong contrast variations. We showed as well that interest points based on a multi-scale frequency analysis can be used to control exploratory saccades by using a bottom-up mechanism; the low frequency part of such a representation can be used to control the saccades required to attain the target in a top-down way
28
Wang, Shaoxiong S. M. Massachusetts Institute of Technology. "3D shape perception from vision and touch." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/122914.
Full textAbstract:
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2019
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 47-52).
Perceiving accurate 3D object shape is important for robots to interact with the physical world. Current research along this direction has been primarily relying on visual observations. Vision, however useful, has inherent limitations due to occlusions and the 2D-3D ambiguities, especially for perception with a monocular camera. In contrast, touch gets precise local shape information, though its efficiency for reconstructing the entire shape could be low. In this thesis, we propose a novel paradigm that efficiently perceives accurate 3D object shape by incorporating visual and tactile observations, as well as prior knowledge of common object shapes learned from large-scale shape repositories. We use vision first, applying neural networks with learned shape priors to predict an object's 3D shape from a single-view color image. We then use tactile sensing to refine the shape; the robot actively touches the object regions where the visual prediction has high uncertainty. Our method efficiently builds the 3D shape of common objects from a color image and a small number of tactile explorations (around 10). Our setup is easy to apply and has potentials to help robots better perform grasping or manipulation tasks on real-world objects.
by Shaoxiong Wang.
S.M.
S.M. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science
29
Cheng, Chuen-kei Joseph, and 鄭傳基. "Path perception from optic flow." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B4961759X.
Full textAbstract:
Perceiving the path we are travelling on is important for successful navigation. Relative motion between the world and the observer generates optical flow on the retinae (retinal flow). Gibson (1950) pointed out that when travelling on a straight path with no eye, head, or body rotation, retinal flow is radial and the stationary point indicates the instantaneous direction of travelling, or heading, of the observer. The straight path can then be recovered as it coincides with heading.
Nevertheless, it is rarely the case that people travel with no rotation. Instead, they normally look at different points of interest when they are navigating. The result of changing one's gaze or rotating one's head is the addition of a rotational component, which is a laminar flow, to the flow field. The rotational component shifts the stationary point from heading and makes heading perception difficult. Extensive research has been conducted on how the human visual system removes the rotational component of the retinal flow and how extra-retinal information, such as efferent copies of eye muscle commands, may contribute to this process.
The paths on which people travel are not always straight, but often curved. When a path is curved, it no longer coincides with heading. In this case, heading is the tangent of the path. Researchers have proposed theories to explain how curved paths are perceived. Each of them requires different visual information and gaze conditions (e.g., fixating on a target or gazing along the heading direction). They can be categorized by whether or not path perception depends on heading perception.
The goal of this thesis is to systematically examine different theories of path perception and determine how humans perceive curved paths. Study 1 examined different path perception theories by comparing human path perception performance in various gaze conditions and with the availability of various optic flow information. Study 2 investigated whether path perception depends on heading perception. Study 3 examined the contribution of reference objects to path perception. Study 4 investigated how extra-retinal informationcontribute to path perception.
The experiments that I present here show that (a) when there is no extra-retinal information, path perception is accurate only when one's gaze is along heading such that the rotation in the flow field is equal to path rotation; (b) when one's gaze is not along heading such that the rotation in the flow field is not equal to path rotation, path perception is inaccurate. Adding more visual information, such as acceleration, dense flow field, and/ or reference objects does not improve the accuracy; (c) eye movement signals support accurate path perception only in the natural case of self-motion in which body orientation is aligned with heading such that eye movement signals help to stabilize heading in the body-centric coordinate system.published_or_final_version
Psychology
Doctoral
Doctor of Philosophy
30
Lerman, Hemdat. "Vision-based demonstratives." Thesis, University of Oxford, 2005. http://ora.ox.ac.uk/objects/uuid:e44728e4-ba4d-4555-bedf-ffe559880652.
Full textAbstract:
How should we account for our ability to entertain simple, vision-based demonstrative thoughts about particular objects (that is, our ability to entertain thoughts about particular objects simply on the basis of seeing them)? In this thesis I propose an account of this ability that accords with the common-sense view that seeing an object puts one in a position to single it out by visually attending to it, and that this provides one with the ability to entertain demonstrative thoughts about it. An account of this type requires that we account for what it is to see a particular object and to visually attend to it without appealing to particular demonstrative abilities. However, it has been argued that a notion of seeing an object, and similarly a notion of attending to an object, which is accounted for in this way is unsuitable for accounting for demonstrative abilities. I argue that there is no real problem: what we need is a notion of experiential content which is concept-dependent only in a general manner. That is, the account of the relevant notion of experiential content requires appeal to the subject's conceptual abilities, but the account is not given in terms of specific conceptual abilities (especially, not specific demonstrative abilities). I then characterize a notion of attention to a seen object which can be accounted for without appeal to particular demonstrative abilities, and explain how attending to an object in the relevant sense provides the subject with the ability to think about the object demonstratively. It is widely agreed that spatial location plays a central role in an account of demonstratives. I explain this role in terms of the role played by location in visual attention to the object and the subject's grasp of the fact that he attends to the object.
31
Clery, Stéphane. "Psychophysical studies of interactions between luminance and chromatic information in human vision." Thesis, University of St Andrews, 2014. http://hdl.handle.net/10023/6376.
Full textAbstract:
In this thesis, I investigated how human vision processes colour and luminance information to enable perception of our environment. I first tested how colour can alter the perception of depth from shading. A luminance variation can be interpreted as either variation of reflectance (patterning) or variation of shape. The process of shape-from-shading interprets luminance variation as changes in the shape of the object (e.g. the shading on an object might elicit the perception of curvature). The addition of colour variation is known to modify this shape-from-shading processing. In the experiments presented here I tested how luminance driven percepts can be modified by colour. My first series of experiments confirmed that depth is modulated by colour. I explored a larger number of participants than previously tested. Contrary to previous studies, a wide repertoire of behaviour was found; participants experienced variously more depth, or less depth, or no difference. I hypothesised that the colour modulation effect might be due to a low-level contrast modulation of luminance by colour, rather than a higher-level depth effect. In a second series of experiments, I therefore tested how the perceived contrast of a luminance target can be affected by the presence of an orthogonal mask. I found that colour had a range of effects on the perception of luminance, again dependant on the participants. Luminance also had a similar wide range of effects on the perceived contrast of luminance targets. This showed that, at supra-threshold levels, a luminance target's contrast can be modulated by a component of another orientation (colour or luminance defined). The effects of luminance and colour were not following a particular rule. In a third series of experiments, I explored this interaction at detection levels of contrast. I showed cross-interaction between luminance target and mask but no effects of a colour mask.
32
Tudor, RG. "Looking out: an investigation of the visitor's experience of natural environment." Thesis, Bec Tudor, 2005. https://eprints.utas.edu.au/1982/1/Masters_of_Art%2C_Design_%26_Env_Research_Paper_-_Bec_Tudor.pdf.
Full textAbstract:
A practical, aesthetic and philosophical examination of lookouts as found in Australian National Parks. Investigates the impact of landscape (as refering to both the actual phenomena and cultural product) on environmental values and human relationship with place. Explores the unique relationship between visitors and environments conserved for their 'wilderness' value. Discusses the management of lookouts and the mediation and potential manipulation of visual perception in the design of these facilities. Suggests lookouts subjegate immediate physical 'site' to celebrate a distant 'scene' granted greater environmental value on the basis of aesthetic principles of beauty, the sublime and the photogenic.
33
Chan, Y. M. "Depth perception in visual images." Thesis, University of Brighton, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380238.
Full text
34
Ward, David. "Action-space theory of conscious vision." Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/5604.
Full textAbstract:
I argue that conscious visual experience consists in a direct and noninferential grasp of the way one’s current perceptual contact with the environment poises one to pursue various intentional plans, goals and projects. I show that such a view of visual consciousness is supported by current work in cognitive neuroscience, affords a compelling account of colour perception, and suggests a way to bridge the ‘explanatory gap’ between consciousness and the language of the natural sciences. In chapter 1, I examine the reasoning that leads to the appearance of an explanatory gap between the phenomenal and the physical in more detail, and set out the constraints on a solution that our discussion of the problem has imposed. I then sketch the two rival takes on the relationship between perception and action mentioned above – adjudicating between these two theories (and finding in favour of the action-space view) is the task of the next two chapters, and is a recurring theme throughout. Chapter 2 moves on to discuss some recent work in the neuropsychology of vision and what it might suggest about the functional role of conscious vision, and the first half of chapter 3 considers two puzzle cases concerning colour perception. Each of these discussions turns out to constitute a source of support for the actionspace view that visual perception consists in a grasp of the practical consequences of sensation, and the second half of chapter 3 sets out this view and responds to an initial range of questions and objections it might face. Chapter 4 illustrates our view via a discussion of colour perception, and chapter 5 discusses the type of grasp of practical consequences that is necessary for perceptual sensitivity to issue in conscious experience. By chapter 6, we are in a position to see how the action-space approach can help close the explanatory gap for phenomenal consciousness, and our final chapter sets out how I think this should be done. I conclude with a brief discussion of further questions and prospects for the action-space approach.
35
Beidleman, Carol Aileen 1956. "Visitor attitudes and perceptions of use management in Rocky Mountain National Park." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276758.
Full textAbstract:
Increasing visitation to national parks and the resulting resource impact has caused many park administrators to implement restrictive use management strategies. Though it seems clear that the resource has benefited from these use restrictions, little research has been done to determine their effect on the visitor. The goal of this study was to provide information to help guide the administrators of Rocky Mountain National Park in evaluating current use management actions and developing new ones in the future to both satisfactorily meet the protection needs of the resource and protect the quality of the visitor experience. Frontcountry campers were surveyed to determine awareness and attitudes about current and possible use management actions, perceptions of national park management purpose and challenges, and socio-demographic information. Respondents favored the majority of current use management actions, but were opposed to strongly restrictive actions considered as a possibility in the future.
36
Lambert, Hayley M. "Emotion Discrimination in Peripheral Vision." TopSCHOLAR®, 2018. https://digitalcommons.wku.edu/theses/2087.
Full textAbstract:
The recognition accuracy of emotion in faces varies depending on the discrete emotion being expressed and the location of the stimulus. More specifically, emotion detection performance declines as facial stimuli are presented further out in the periphery. Interestingly, this is not always true for faces depicting happy emotional expressions, which can be associated with maintained levels of detection. The current study examined neurophysiological responses to emotional face discrimination in the periphery. Two event-related potentials (ERPs) that can be sensitive to the perception of emotion in faces, P1 and N170, were examined using EEG data recorded from electrodes at occipitotemporal sites on the scalp. Participants saw a face presented at a 0° angle of eccentricity, at a 10° angle of eccentricity, or at a 20° angle of eccentricity, and responded whether the face was a specific emotion or neutral. Results showed that emotion detection was higher when faces were presented at the center of the display than at 10° or 20° for both happy and angry expressions. Likewise, the voltage amplitude of the N170 component was greater when faces were presented at the center of the display than at 10° or 20°. Further exploration of the data revealed that high intensity expressions were more easily detected at each location and elicited a larger amplitude N170 than low intensity expressions for both emotions. For a peripheral emotion discrimination task like that which was employed in the current study, emotion cues seem to enhance face processing at peripheral locations.
37
Christou, Christakis Georgiou. "Human vision and the physics of natural images." Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386936.
Full text
38
Quan, Long. "Contribution de la vision monoculaire à la perception tridimensionnelle." Vandoeuvre-les-Nancy, INPL, 1989. http://www.theses.fr/1989NAN10444.
Full textAbstract:
Nous présentons dans cette thèse un système de vision monoculaire pour la perception tridimensionnelle. Plus précisément les problèmes abordés sont l'appariement d'une image avec le modèle tridimensionnel de la scène et l'appariement d'images entre elles. Ce travail s'inscrit dans le projet de vision ORASIS dont l'objectif est de permettre à un robot mobile de se déplacer dans une scène d'intérieur. Nous présentons d'abord un certain nombre de propriétés de la géométrie projective que nous exploitons dans notre système. Puis nous développons un algorithme d'extraction des informations perspectives telles que les points de fuite et la ligne d'horizon. Ensuite nous abordons le problème du regroupement des indices visuels, et développons les algorithmes de regroupement sur les indices de type segment de droite issus de l'approximation polygonale de contours. Les groupes utilisés sont: le groupe directionnel, le groupe raie, le groupe colinéaire, le groupe convexe et le groupe coplanaire. Nous développons également un algorithme linéaire permettant la détermination précise du point de vue dans le modèle. Nous décrivons, ensuite, les algorithmes pour l'appariement image/modèle et image/image. L'appariement des indices visuels avec des modèles d'objets est effectué au niveau bidimensionnels en termes de groupes invariants bidimensionnel par changement de point de vue et non pas en termes de caractéristiques tridimensionnelles. Le principe de l'algorithme repose sur la technique de prédiction/vérification. Une discussion confrontant les différentes techniques de l'appariement nous aide à justifier notre choix. Finalement nous présentons les résultats expérimentaux de l'appariement
39
Jovanovic, Ljubica. "Contextualizing the clock(s) : integrating cues for the perception of time and timing an action." Thesis, Paris Sciences et Lettres (ComUE), 2018. http://www.theses.fr/2018PSLEE034/document.
Full textAbstract:
Les événements pertinents de notre environnement sont intégrés au flux d'information complexe et multisensoriel qui nous parvient. La perception du temps est malléable et de nombreuses illusions suggèrent que le temps perçu est influencé par le contexte. Dans le cadre de cette thèse, nous nous sommes intéressés à l’influence de différents aspects du contexte sur la perception du temps et du timing des actions chez l’humain. Dans la première partie de cette thèse, nous avons étudié le rôle du caractère explicite de l’apparition d’un événement sur la durée perçue de l’intervalle entre deux événements. Nous avons montré que l’influence du contexte temporel était plus forte dans la condition d’apparition implicite, pour laquelle le biais d’estimation des vers la moyenne des durées présentées est plus fort, et la sensibilité plus basse. Dans la deuxième partie de la thèse, nous avons étudié les effets du contexte temporel et spatial sur le temps perçu des événements. Les résultats de ces études suggèrent que le moment perçu de l’apparition d’un événement ne correspond pas toujours aux latences perceptives mesurées par des taches de temps de réaction, et que la saillance est un indice important pour percevoir le temps. Enfin, dans la troisième partie, nous avons examiné comment différentes sources d’incertitude influencent le timing perçu d’une action et son auto-évaluation. Les résultats suggèrent que ces deux aspects s’appuieraient au moins en partie sur des processus différentsRelevant events in our environment are embedded in the complex, multisensory stream of information. Time perception is malleable, and numerous time illusions suggest that the perceived time of events is affected by context. The work presented in this thesis investigated how different aspects of human time perception and timing an action are affected by context. In the first part of the thesis, we investigated how the explicitness of the event onset affects perceived elapsed time between two points in time. The temporal context affected the estimates more in the implicit onset condition. The estimates were more biased towards the mean of the presented durations, and sensitivity of duration discrimination sensitivity was lower in the condition with no explicit onset of the duration to be timed. The effects of the temporal and spatial context on the perceived time of events were addressed in the second part. The findings suggest that the perceived time of events can be easily and compulsory biased by the temporal and spatial context. Findings from these studies support the hypothesis that the perceived time of events does not always correspond the the perceptual latencies measured in the reaction time tasks, and that the saliency is an important cue for the perceived time. Finally, in the third part, we investigated how different sources of uncertainty affect the timing and self-evaluation of an action. The findings suggest that timing an action and evaluating its outcome may, at least in part, rely on different computations
40
Maule, John. "Ensemble perception of hue." Thesis, University of Sussex, 2016. http://sro.sussex.ac.uk/id/eprint/61471/.
Full textAbstract:
In order to rapidly get the gist of new scenes or recognise objects, the brain must have mechanisms to process the large amount of visual information which enters the eye. Previous research has shown that observers tend to extract the average feature from briefly seen sets of multiple stimuli that vary along a dimension (e.g., size), a phenomenon called ensemble perception. This thesis investigates ensemble perception of hue. Paper 1 (Maule, Witzel & Franklin, 2014) demonstrates that human observers have memories biased towards the mean hue of a rapidly-presented ensemble of colours. Paper 2 (Maule & Franklin, 2015) further shows that observers are able to identify the mean hue from a distractor fairly reliably, provided the range of hues is manageable. Paper 3 provides evidence that, while observers' settings of the mean hue converge quite closely on the true mean across many trials, the precision of those settings is low and does not support claims that ensemble perception can surpass the limits of visual working memory. Paper 4 found that adults with autism have an enhanced ability to discriminate members from non-members of multi-hue ensembles, and a similar ability to extract the mean hue compared to typical adults, but are worse at averaging small sets. Finally, paper 5 investigated colour afterimages in adults with autism and whether they are affected by top-down gist of a scene. It was found that afterimages were no different in autism compared to a typical group. Overall these studies provide the first comprehensive exploration of ensemble perception of hue, showing that observers can extract and estimate the mean hue of a rapidly-presented multi-colour ensemble with a small hue variance. The ability to average hue may be driven by a sub-sampling mechanism, but results from autistic adults suggests that it can be modulated by processing style.
41
Chan, Po Yu. "Visitors' perceptions of the Hong Kong global geopark of China." HKBU Institutional Repository, 2013. https://repository.hkbu.edu.hk/etd_ra/1547.
Full text
42
Desanghere, Loni. "Gaze strategies in perception and action." Experimental Brain Research, 2011. http://hdl.handle.net/1993/17898.
Full textAbstract:
When you want to pick up an object, it is usually a simple matter to reach out to its location, and accurately pick it up. Almost every action in such a sequence is guided and checked by vision, with eye movements usually preceding motor actions (Hayhoe & Ballard, 2005; Hayhoe, Shrivastava, Mruczek, & Pelz, 2003). However, most research in this area has been concerned about the sequence of movements in complex “everyday” tasks like making tea or tool use. Less emphasis has been placed on the object itself and where on it the eye and hand movements land, and how gaze behaviour is different when generating a perceptual response to that same object. For those studies that have, very basic geometric shapes have been used such as rectangles, crosses and triangles. In everyday life, however, there are a range of problems that must be computed that go beyond such simple objects. Objects typically have complex contours, different textures or surface properties, and variations in their centre of mass.
Accordingly, the primary goals in conducting this research were three fold: (1) To provide a deeper understanding of the function of gaze in perception and action when interacting with simple and complex objects (Experiments 1a, 1b, 1c); (2) To examine how gaze and grasp behaviours are influenced when you dissociate important features of an object such as the COM and the horizontal centre of the block (Experiments 2a, 2c); and (3) To explore whether perceptual biases will influence grasp and gaze behaviours (Experiment 2b).
The results from the current series of studies showed the influence of action (i.e., the potential to act) on perception in terms of where we look on an object, and vice versa, the influence of perceptual biases on action output (i.e. grasp locations). In addition, grasp locations were found to be less sensitive to COM changes than previously suggested (for example see Kleinholdermann, Brenner, Franz, & Smeets, 2007), whereas fixation locations were drawn towards the ‘visual’ COM of objects, as shown in other perceptual studies (for example see He & Kowler, 1991; Kowler & Blaser, 1995; McGowan, Kowler, Sharma, & Chubb, 1998; Melcher & Kowler, 1999; Vishwanath & Kowler, 2003, 2004; Vishwanath, Kowler, & Feldman, 2000), even when a motor response was required. The implications of these results in terms of vision for Perception and vision for Action are discussed.
43
Marié, Éric. "Controle dopaminergique de la perception visuelle." Aix-Marseille 2, 1993. http://www.theses.fr/1993AIX20033.
Full text
44
Gunther, Karen La Vaughn. "The neural mechanisms underlying color perception /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2002. http://wwwlib.umi.com/cr/ucsd/fullcit?p3044771.
Full text
45
Or, Chun-fai Charles. "The interaction of motion and form in the perception of global structure a glass-pattern study /." Click to view the E-thesis via HKUTO, 2005. http://sunzi.lib.hku.hk/hkuto/record/B36225009.
Full text
46
Or, Chun-fai Charles, and 柯駿輝. "The interaction of motion and form in the perception of global structure: a glass-pattern study." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B36225009.
Full text
47
Tsui, Sum-yin. "Local motion in the image plane and in the stereo-depth plane distorts an object's perceived location and spatial arrangement." Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/hkuto/record/B38610607.
Full text
48
Li, Wang-on. "Global motion distorts perceived shape an investigation of the relationship between motion and form /." Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/hkuto/record/B38609484.
Full text
49
Li, Wang-on, and 李允安. "Global motion distorts perceived shape: an investigation of the relationship between motion and form." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B38609484.
Full text
50
STRYBEL, THOMAS ZIGMUNT. "AUDITORY APPARENT MOTION IN THE FREE FIELD." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184100.
Full textAbstract:
The purpose of this investigation was to examine the illusion of auditory apparent motion (AM), and compare it to the visual AM function. Visual explanations of this phenomenon rely on a two-process theory, with the spatial separation between the two stimuli determining which process is involved. A pilot experiment examined the role of spatial separation on auditory AM. Subjects were required to listen to a pair of 50 msec. uncorrelated white noise sources, led through two speakers, and separated in time by interstimulus onset intervals (ISOI's) ranging from 0 to 500 msec. The speakers were positioned at one of eleven different locations which varied both in their separation (0-160° azimuth) and distance from the listener (17-34 inches). The subjects classified their experience of the stimulus presentation into one of five response categories. In addition, they were required to report the direction (left or right) of the first-occurring stimulus. Neither the angular separation between the sound sources nor the distance of the sources from the subject had any effect on the range or midpoint of the ISOI's which produce the illusion of motion. In addition, the percentage of correct direction judgements were not affected by the location of the sound sources. The main experiment examined the possibility of perceiving auditory AM in the absence of binaural cues. Six listeners were employed in this experiment, and only three separation (10, 40 and 160°). Each subject was tested at all speaker positions, both with one ear occluded and with both ears open. The results of this experiment indicated that AM can be perceived under monaural listening conditions. Spatial separation did effect the illusion in this condition. As the separation between the sound sources increased, the percentage of motion reports decreased. The detection of direction of the motion was more difficult as the separation decreased in the monaural condition. These results conflict with previous explanations of motion perception in the auditory modality, which rely exclusively on the presence of binaural spatial information. A two process theory of AM is also indicated, but the spatial separation does not determine which mechanism is being employed.