Advanced search options

Advanced Search Options 🞨

Browse by author name (“Author name starts with…”).

Find ETDs with:

in
/  
in
/  
in
/  
in

Written in Published in Earliest date Latest date

Sorted by

Results per page:

Sorted by: relevance · author · university · dateNew search

You searched for subject:(Negative Fusional Reserves AND Visual Fatigue). Showing records 1 – 3 of 3 total matches.

Search Limiters

Last 2 Years | English Only

No search limiters apply to these results.

▼ Search Limiters

1. Costa, Anita Gabriela Moreira Nunes da. Consequências visuais da exposição a estímulos estereoscópicos.

Degree: 2014, RCAAP

A tecnologia de imagem tridimensional (3D) enriquece a experiência visual, através da inclusão da informação de profundidade. Atualmente, e embora todo o sucesso da técnica, muitos estudos demonstram as suas implicações na visão. Os utilizadores relatam queixas associadas á exposição estereoscópica, nomeadamente desconforto, fadiga visual, enjoos e dor de cabeça. Neste trabalho são estudadas as consequências visuais que resultam da exposição a estímulos estereoscópicos. Para 30 indivíduos com média de idade de 23; 33 4; 32 anos, foram medidos antes e após a visualização de um lme em 3D todos os parâmetros do sistema vergencial e a estereopsia. A exposição de estímulos estereoscópicos foi dividido em tês sessões com duração de 20 , 40 e 60 minutos em dias diferentes. O lme "HUGO" foi escolhido para produzir o estímulo visual, visualizado á distância de 1 metro. Foram observadas alterações estatisticamente signi cativas nos valores de estereopsia e reservas fusionais positivas após longos períodos de exposição. O mesmo não acontece para as reservas fusionais negativas. A heteroforia e a disparidade de xação apresentaram tendência signi cativa para a direção exo. Por conseguinte, conclui-se que a longa exposição a estímulos 3D poderá reduzir signi cativamente a estereopsia. A análise destes parâmetros e a sua possível relação com o cansaço visual é uma questão importante, tendo em conta o renovado interesse pelo conteúdo 3D entre os consumidores.

The three-dimensional (3D) technology enhances the viewing experience by adding the depth information. Currently, and although all the success of the technique, there are many studies that demonstrate some vision implications. Users reported complaints associated with stereoscopic display, especially discomfort, eyestrain, headaches and dizziness. Thus, in this work the visual consequences that result of the exposure to 3D stimulus in the near vision are studied. Hence, the whole vergence system and stereopsis of 30 subjects with 23; 33 4; 32 years were measured, before and after the visualization of a 3D movie. The exposure of stereoscopic stimulus was divided in 3 sessions with duration 20, 40 and 60 minutes in different days. The "HUGO" lm was chosen to produce the visual stimulus, watched with a viewing distance of 1 meter. Signi cant statistical changes in the values of stereopsis and positive fusional reserves after long exposures to 3D stimulus were observed. However, the same is not true for the negative fusional reserves, disparity xation and phoria. Therefore was concluded that long exposure to 3D stimuli signi cantly reduces the stereopsis. Moreover, the phoria and disparity xation tends to move in the exo direction. The analysis of these parameters and the relation with the typical visual fatigue that results of 3D stimulus exposure is an important issue considering the increased interest for 3D content among consumers.

Advisors/Committee Members: Ferreira, Francisco Brardo, Pinheiro, António Manuel Gonçalves.

Subjects/Keywords: Negative Fusional Reserves and Visual Fatigue; Phoria; Positive Fusional Reserves; Stereo Exposure; Stereopsis; Xation Disparity; Domínio/Área Científica::Ciências Médicas::Ciências da Saúde::Ciências da Visão

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Costa, A. G. M. N. d. (2014). Consequências visuais da exposição a estímulos estereoscópicos. (Thesis). RCAAP. Retrieved from https://www.rcaap.pt/detail.jsp?id=oai:ubibliorum.ubi.pt:10400.6/6172

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Costa, Anita Gabriela Moreira Nunes da. “Consequências visuais da exposição a estímulos estereoscópicos.” 2014. Thesis, RCAAP. Accessed April 16, 2021. https://www.rcaap.pt/detail.jsp?id=oai:ubibliorum.ubi.pt:10400.6/6172.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Costa, Anita Gabriela Moreira Nunes da. “Consequências visuais da exposição a estímulos estereoscópicos.” 2014. Web. 16 Apr 2021.

Vancouver:

Costa AGMNd. Consequências visuais da exposição a estímulos estereoscópicos. [Internet] [Thesis]. RCAAP; 2014. [cited 2021 Apr 16]. Available from: https://www.rcaap.pt/detail.jsp?id=oai:ubibliorum.ubi.pt:10400.6/6172.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Costa AGMNd. Consequências visuais da exposição a estímulos estereoscópicos. [Thesis]. RCAAP; 2014. Available from: https://www.rcaap.pt/detail.jsp?id=oai:ubibliorum.ubi.pt:10400.6/6172

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


University of Missouri – Columbia

2. Groom, Emily. The eyes of the world are upon us : the role of visual images in the fight over Alberta's oil sands.

Degree: 2011, University of Missouri – Columbia

In the controversy over the mining of the Alberta oil sands, tourism has become a tool used by both those who want to stop further development of the oil sands and perhaps also by those who want it to continue. The goal of this research is to examine how the visual images of the environment, within the context of tourism, are being used to influence public opinion over the oil sands operations. Through a multistep process, promotional materials from tourism brochures, guidebooks, and websites, and also from anti-oil sands campaign websites, were analyzed according to their content, with just under 2000 images examined. Nature-tourism is the dominant form of tourism in the oil sands region, and therefore tourism experiences and images from the oil sands region largely feature images of wildlife, scenic views, and outdoor activities in the oil sands region. In contrast, images used by the Rethink Alberta campaign and other anti-oil sands organizations focus on mining operations themselves and their immediate negative effects on the environment. Results of the examination found differences in means of distribution, environmental emphasis, and geographical scale between material from tourism and from anti-oil sands campaigns. The differing goals of the tourism industry and the anti-oil sands campaigns were also reflected in the imagery used, with tourism attempting to attract visitors to pristine environments, while anti-oil sands groups are trying to discourage visitation as a form of protest. By promoting the availability of outdoor experiences through advertisements for nature-tourism activities, and wide use of visual images featuring aspects of nature, the tourism industry may be unintentionally countering anti-oil sands campaign groups' allegations of wanton ecological destruction and unsustainability. Advisors/Committee Members: Palmer, Craig T. (advisor).

Subjects/Keywords: Ecotourism; Visual perception in advertising; Nature conservation; Oil sands; Oil sands industry  – Public opinion; Mines and mineral resources; Petroleum reserves

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Groom, E. (2011). The eyes of the world are upon us : the role of visual images in the fight over Alberta's oil sands. (Thesis). University of Missouri – Columbia. Retrieved from http://hdl.handle.net/10355/11173

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Groom, Emily. “The eyes of the world are upon us : the role of visual images in the fight over Alberta's oil sands.” 2011. Thesis, University of Missouri – Columbia. Accessed April 16, 2021. http://hdl.handle.net/10355/11173.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Groom, Emily. “The eyes of the world are upon us : the role of visual images in the fight over Alberta's oil sands.” 2011. Web. 16 Apr 2021.

Vancouver:

Groom E. The eyes of the world are upon us : the role of visual images in the fight over Alberta's oil sands. [Internet] [Thesis]. University of Missouri – Columbia; 2011. [cited 2021 Apr 16]. Available from: http://hdl.handle.net/10355/11173.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Groom E. The eyes of the world are upon us : the role of visual images in the fight over Alberta's oil sands. [Thesis]. University of Missouri – Columbia; 2011. Available from: http://hdl.handle.net/10355/11173

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


University of Arizona

3. Parsons, Russ, 1957-. The perception of changes in visibility at Class I Parks and Wilderness areas .

Degree: 1987, University of Arizona

The language of regulations implementing the 1977 Clean Air Act Amendments distinguishes between humanly detectable visibility impairment in Class I Parks and Wilderness areas and the extent to which such impairment adversely affects a park visitor's visual experience. Two lines of environmental perception research have arisen from this distinction, one emphasizing the detectability of visibility impairment, and the other emphasizing a park visitor's experience. This study attempts to deal with issues relevant to both lines of research. Subjects were shown color slides depicting varying levels of visibility in Class I Parks and Wilderness areas under four treatment conditions. A sensitivity gradient emerged from these conditions: Subjects who rated repeated versions of selected vistas for visual air quality were most sensitive to changes in visibility, while subjects who rated a random series of scenes for scenic beauty were least sensitive. Other variables (i.e., scattering angle, and the particular vista being viewed) also proved to have substantial influence on perceptual ratings. Advisors/Committee Members: Daniel, Terry (advisor).

Subjects/Keywords: Air quality.; Visual perception.; Landscape assessment.; National parks and reserves  – Southwest, New.; Wilderness areas  – Southwest, New.

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Parsons, Russ, 1. (1987). The perception of changes in visibility at Class I Parks and Wilderness areas . (Masters Thesis). University of Arizona. Retrieved from http://hdl.handle.net/10150/276583

Chicago Manual of Style (16th Edition):

Parsons, Russ, 1957-. “The perception of changes in visibility at Class I Parks and Wilderness areas .” 1987. Masters Thesis, University of Arizona. Accessed April 16, 2021. http://hdl.handle.net/10150/276583.

MLA Handbook (7th Edition):

Parsons, Russ, 1957-. “The perception of changes in visibility at Class I Parks and Wilderness areas .” 1987. Web. 16 Apr 2021.

Vancouver:

Parsons, Russ 1. The perception of changes in visibility at Class I Parks and Wilderness areas . [Internet] [Masters thesis]. University of Arizona; 1987. [cited 2021 Apr 16]. Available from: http://hdl.handle.net/10150/276583.

Council of Science Editors:

Parsons, Russ 1. The perception of changes in visibility at Class I Parks and Wilderness areas . [Masters Thesis]. University of Arizona; 1987. Available from: http://hdl.handle.net/10150/276583

.