Tesis sobre el tema "Stress visivo"
Crea una cita precisa en los estilos APA, MLA, Chicago, Harvard y otros
Consulte los 50 mejores tesis para su investigación sobre el tema "Stress visivo".
Junto a cada fuente en la lista de referencias hay un botón "Agregar a la bibliografía". Pulsa este botón, y generaremos automáticamente la referencia bibliográfica para la obra elegida en el estilo de cita que necesites: APA, MLA, Harvard, Vancouver, Chicago, etc.
También puede descargar el texto completo de la publicación académica en formato pdf y leer en línea su resumen siempre que esté disponible en los metadatos.
Explore tesis sobre una amplia variedad de disciplinas y organice su bibliografía correctamente.
INAMA, MARCO. "Three-Dimensional vs Two-Dimensional Minimally Invasive Surgery. A comparison of the visual work load and surgical outcomes". Doctoral thesis, Politecnico di Torino, 2018. http://hdl.handle.net/11583/2710181.
Texto completoLi, Hong. "College stress and psychological well-being : vision in life as a coping resource /". Hong Kong : University of Hong Kong, 2002. http://sunzi.lib.hku.hk/hkuto/record.jsp?B25017408.
Texto completoYekta, Karizbala A. A. "The clinical significance of fixation disparity in binocular vision". Thesis, University of Bradford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233694.
Texto completoLi, Hong y 李虹. "College stress and psychological well-being: vision in life as a coping resource". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B31243344.
Texto completoNguyen, Cong Uy. "Hybrid stress visco-plasticity : formulation, discrete approximation, and stochastic identification". Thesis, Compiègne, 2022. http://www.theses.fr/2022COMP2695.
Texto completoIn this thesis, a novel approach is developed for visco-plasticity and nonlinear dynamics problems. In particular, variational equations are elaborated following the Helligner-Reissner principle, so that both stress and displacement fields appear as unknown fields in the weak form. Three novel finite elements are developed. The first finite element is formulated for the axisymmetric problem, in which the stress field is approximated by low-order polynomials such as linear functions. This approach yields accurate solutions specifically in incompressible and stiff problems. In addition, a membrane and plate bending finite element are newly designed by discretizing the stress field using the lowest order Raviart-Thomas vector space RT0. This approach guarantees the continuity of the stress field over an entire discrete domain, which is a significant advantage in the numerical method, especially for the wave propagation problems. The developments are carried out for the viscoplastic constitutive behavior of materials, where the corresponding evolution equations are obtained by appealing to the principle of maximum dissipation. To solve the dynamic equilibrium equations, energy conserving and decaying schemes are formulated correspondingly. The energy conserving scheme is unconditional stable, since it can preserve the total energy of a given system under a free vibration, while the decaying scheme can dissipate higher frequency vibration modes. The last part of this thesis presents procedures for upscaling of the visco-plastic material behavior. Specifically, the upscaling is performed by stochastic identification method via Baysian updating using the Gauss-Markov-Kalman filter for assimilation of important material properties in the elastic and inelastic regimes
Crotogino, Jennifer. "Visual stress in migraine : subjective and psychophysiological responses to intense visual stimulation". Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=38475.
Texto completoThe first study assessed thresholds of light-induced discomfort and pain in migraine sufferers and non-migrainous controls during a non-headache period. Two instruction sets were compared to assess whether information presented to participants would affect thresholds. The results showed that migraineurs had significantly lower thresholds for light-induced pain. However, this effect was most apparent in those who had heard the negatively biased instructions reinforcing the need to control contextual factors when assessing subjective phenomena such as visual discomfort.
The second study assessed subjective and psychophysiological responses of female migraine sufferers and female controls during exposure to visual stimuli incorporating spatial and temporal characteristics that are most likely to be bothersome to migraineurs. Two control stimuli were included to assess responses during similar, but theoretically less aversive conditions. Migraine sufferers had higher heart rate and more frequent electrodermal responses than controls at all points of the study, including baseline and recovery. However, while migraineurs reported higher anxiety during the intense conditions, and reported more visual and somatic complaints than controls during various viewing conditions, they did not show heart rate, heart rate variability or electrodermal changes that would suggest clear changes in autonomic function in response to aversive visual stimulation.
The third study assessed ambulatory electrocardiograms to investigate whether autonomic changes would be evident in the period leading up to, during or following a migraine. Three individuals were assessed on a day when they experienced a naturally occurring headache, and on a day when they were not. No obvious pattern of autonomic change was detected before or after headache, although there was some evidence that a pattern of increased heart rate and decreased vagal tone may accompany headache.
In summary, the results confirm that migraine sufferers are more sensitive to intense visual stimulation than controls, but do not support the contention that exposure results in widespread autonomic changes. Since interictal visual discomfort is a common in migraine, further research is needed to clarify how it can be incorporated into models of migraine pathophysiology.
Hill, N. J. "Visco-plastic and thermal stress analysis in the continuous casting of steel". Thesis, Teesside University, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376088.
Texto completoGONZALES, GIANCARLO LUIS GOMEZ. "MEASUREMENT OF ELASTOPLASTIC STRAINS AT STRESS CONCENTRATION REGIONS USING MESHLESS METHODS AND COMPUTER VISION". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2014. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=24993@1.
Texto completoCONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
A análise de deformações em torno de regiões de concentração de tensões é uma importante ferramenta na avaliação da integridade estrutural de peças e componentes mecânicos. Todavia, esta análise se torna mais complexa quando o material atinge a plastificação junto ao entalhe. Neste trabalho, uma nova metodologia numérico-experimental para medição de deformações na superfície de um material, combinando métodos sem malha e visão computacional, é apresentada. A parte experimental da técnica é baseada na captura de imagens de um material em estados diferentes de deformação durante um ensaio mecânico. A técnica de visão computacional conhecida como Scale Invariant Feature Tecnique (SIFT) é utilizada aqui para extrair pontos característicos nas imagens capturadas. Para tanto, uma textura aleatória foi pintada na superfície do corpo de prova. Em seguida, os deslocamentos são obtidos experimentalmente, através do seguimento das posições dos pontos SIFT corretamente correspondidos no par de imagens capturadas do ensaio, antes e depois da aplicação da carga. Os pontos fornecidos pelo algoritmo SIFT são selecionados como nós de uma formulação sem malha, e o método de mínimos quadrados móveis é utilizado para gerar uma aproximação numérica do campo de deslocamentos e as suas derivadas. Assim, deformações na região próxima ao entalhe são devidamente quantificadas para posterior análise. Na validação da metodologia proposta, corpos de prova entalhados foram utilizados para estudar o comportamento da deformação plástica nas regiões de concentração de tensões. Os resultados dos testes mostraram boa concordância e precisão quando comparados com soluções analíticas, simulações pelo método dos elementos finitos (ANSYS) e soluções obtidas através de um software comercial de correlação de imagens digitais.
Strain analysis near stress concentration regions is an important tool for structural integrity of mechanical components. However, this analysis becomes more complex when the material starts to deform plastically near the notch root. In this work, a novel experimental-numerical technique for the measurement of the strain distribution on the surface of a deformable body is described, which uses meshless methods and computer vision. The experimental part of this technique is based on the capture of images at different stages of material deformation during a mechanical test. The Scale Invariant Feature Transform (SIFT) is a computer vision algorithm used here to extract distinctive points or features in the captured images. For this purpose, a random texture was painted on the specimen surface. Then, the displacements are experimentally obtained by tracking the positions of successfully matched SIFT points in an undeformeddeformed pair of images. The points provided by SIFT are selected as nodes in a meshless formulation and the moving least square method is used to generate a numerical approximation for the displacement field and its derivates. Thus, the corresponding strain field close to the notch is calculated. To validate the proposed methodology, notched specimens were employed to study the deformation behavior on regions of stress concentration. Experimental results showed good agreement and accuracy when compared to analytical solutions, to simulations by finite elements (ANSYS) and to solutions obtained by using a commercial software based on the digital image correlation technique.
Greenwood, Verity Jane. "The effects of the artificial light environment on avian behaviour and physiological indicators of stress". Thesis, University of Bristol, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.274670.
Texto completoLyra, Cassandra Santantonio de. "A aromaterapia científica na visão psiconeuroendocrinoimunológica: um panorama atual da aromaterapia clínica e científica no mundo e da psiconeuroendocrinoimunologia". Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/47/47134/tde-11032010-103420/.
Texto completoThis is a theoretical study, based on bibliographical revision. It aimed to build a conceptual panorama of aromatherapy, considering it\'s history and development, and also propose an integrative model of the physiological and psychosocial aspects, based on the psychoneuroendocrineimmunological premisses. Aromatherapy is a millenarian practice, that suffered many changes throughout history, and, for this reason, nowadays, it is confusing and uncertain. It\'s reappearance in the 30\'s permitted a start of the scientific view of the theme. However, the scientific view evolved slowly because of the methodological difficulties that were found. The organization of the current panorama of this therapy permitted observing that many countries study aromatherapy. However, there are many different approaches and views of the subject, in a way that it\'s complex to do the intersection of the studies. In it\'s scientific study there are many elements to be considered, such as type of study (theoretical, preclinical or clinical), variables to control pharmacological, subject and procedural) and questions studied (about the effects of essential oils, about their action mechanisms and about the influence of the variables on both). Furthermore, currently there are many approaches to the study: philosophical (based on oriental heath philosophy), psychological (based on the concept of olfactory memory), pharmacochemical (based of pharmacology and essential oil chemistry), neurological (based on neuroscience) and psychoneuroendocrineimmunological (based on psychoneuroendocrineimmunology). This work focused on preclinical and clinical studies, from a psychoneuroendocrineimmuneological point of view. In order to serve as a first step to the scientific standardizing of the subject, a more objective definition of aromatherapy was proposed, from which the study developed the subject. In the psychoneuroendocrineimmunological model, aromatherapy may have direct or indirect effects in the nervous, endocrine, immune and psychological systems. These effects can be physiological and psychological and they are caused by pharmacological and olfactory mechanisms. Aromas always have pharmacological effects, independently from application via, but when the inhalation is used the olfactory effects are added to these pharmacological effects. The olfactory effects are different from the others and characteristic of the olfactory system. The study of olfaction is indispensable to the scientific understanding of aromatherapy and it has evolved immensely, although there are still many elements still to be understood. Consequently, the studies in aromatherapy also have evolved more, permitting more minute and conclusive studies about the functioning of essential oils in the organism and mind. A path to this kind of study, in the psychoneuroendocrineimmunological model, is the study of the interaction between aromatherapy and stress. The basic premiss of the theory of stress is to study the integration of body and mind. This study concluded that psychoneuroendocrineimmunology is a useful model to study aromatherapy because it permits the scientific evaluation of both physiological and psychological effects of aromatherapy. It also concluded that the organization of the current panorama permitted a theoretical foundation for elaboration of scientific methods in aromatherapy, stress and psychoneuroendocrineimmunology in future studies.
Weber, Darren Lee y darrenleeweber@gmail com. "EVENT-RELATED POTENTIAL INDICES OF ATTENTION AND MEMORY IN POST-TRAUMATIC STRESS DISORDER". Flinders University. Psychology, 2004. http://catalogue.flinders.edu.au./local/adt/public/adt-SFU20070702.080042.
Texto completoAndersen, Mark Bille. "Psychosocial factors and changes in peripheral vision, muscle tension, and fine motor skills during stress". Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184446.
Texto completoMovsisyan, Tatevik. "Perceived Stress and Visual Function in Macular Degeneration Patients". The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1461087205.
Texto completoPanwar, Anurag. "Determining the Effectiveness of Soil Treatment on Plant Stress using Smart-phone Cameras". Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6346.
Texto completoVine, Samuel James. "Anxiety, attention and performance variability in visuo-motor skills". Thesis, University of Exeter, 2010. http://hdl.handle.net/10036/118107.
Texto completoOliveira, Artur André Almeida de Macedo. "INvestigate and Analyse a City - INACITY". Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/45/45134/tde-04052018-170132/.
Texto completoThis project presents a platform that integrates Application Programming Interfaces (APIs), image retrieval systems, Geographical Information Systems (GISes), digital maps and Computer Vision techniques to collect and analyse urban images. The platform, INACITY (an acronym for INvestigate and Analyse a City), empowers users allowing them to select a region over a map and see urban features inside that region that have relevance to the urban architecture context, for instance trees. The implementation is extensible and it is designed to make it easy to add or replace new modules, for instance, to add a new API to present a map, different GISes and other Computer Vision filters.
Lindblom, Emelie. "The effect of visual barriers, outdoor housing and feeding enrichment on the behaviour of drills (Mandrillus leucophaeus) at Parken Zoo". Thesis, Linköpings universitet, Biologi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-114632.
Texto completoBons, Daniel. "Modelling peripheral vision in dynamic situations". Thesis, Linköpings universitet, Institutionen för medicinsk teknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-158641.
Texto completoGrainger, David. "Funnel Vision". VCU Scholars Compass, 2008. http://scholarscompass.vcu.edu/etd/966.
Texto completoNavarro, Martina. "Efeitos de estresse e treino na latência e acurácia de respostas motoras a estímulos visuais". Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/42/42137/tde-20092013-090421/.
Texto completoThe current thesis investigated the effects of high-pressure on latency and accuracy of motor responses to visual stimuli and the efficiency of task-specific practice in managing these effects. The theoretical framework adopted was Attentional Control Theory, which argues that high-pressure increases stress and thus impairs the goal-directed attentional system. The penalty kick in football was adopted as paradigm. The experiments revealed that when stressed, participants either required more time to respond to the visual stimulus movement or were unable to inhibit automatic responses, resulting in consistent errors. Such effects were in part successfully reverted, revealing individual differences that seem to relate to the individuals tendencies for attentional control. Furthermore, the results showed that the mere presence of a threatening non-target object impaired shooting accuracy. The findings provide a better understanding of how high-pressure and non-target objects affect motor performance and how task-specific practice may revert such effects.
Trogadas, Giorgos y Larissa Ekonoja. "The effect of noise filters on DVS event streams : Examining background activity filters on neuromorphic event streams". Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-302514.
Texto completoHändelsekameror är en ny typ av kamera som registrerar små ljusförändringar i kamerans synfält. Sensorn som kameran bygger på är modellerad efter näthinnan som finns i våra ögon. Näthinnan är uppbyggd av tunna lager av celler som omvandlar ljus till nervsignaler. Eftersom synsensorer efterliknar nervsystemet har de getts namnet neuromorfiska synsensorer. För att registrera små ljusförändringar måste dessa sensorer vara väldigt känsliga vilket även genererar ett elektroniskt brus. Detta brus försämrar kvalitén på signalen vilket blir en förhindrande faktor när dessa synsensorer ska användas i praktiken och ställer stora krav på att hitta effektiva metoder för brusredusering. Denna avhandling undersöker två typer av digitala framställningar som omvandlar signalen ifrån händelsekameror till något som efterliknar vanliga bilder som kan användas med traditionella metoder för bildigenkänning. Vi undersöker brusreduseringens inverkan på den övergripande noggrannhet som uppnås av en artificiell intelligens vid bildigenkänning. För att utmana AIn har vi tillfört ytterligare normalfördelat brus i signalen. De digitala framställningar som används är dels histogram av genomsnittliga tidsytor (eng. histograms of averaged time surfaces) och en matrisrepresentation. Vi visar att HATS är robust och klarar av att generera digitala framställningar som tillåter AIn att bibehålla god noggrannhet även vid höga nivåer av brus, vilket medför att brusreduseringens inverkan var försumbar. Matrisrepresentationen gynnas av brusredusering vid högre nivåer av brus.
Kaloskampis, Ioannis. "Recognition of complex human activities in multimedia streams using machine learning and computer vision". Thesis, Cardiff University, 2013. http://orca.cf.ac.uk/59377/.
Texto completoOliva, Aravena Cesar Jaime. "Efeitos do estresse fisico no processamento das informações visuais perifericas em motoristas do transporte coletivo urbano". [s.n.], 1998. http://repositorio.unicamp.br/jspui/handle/REPOSIP/274880.
Texto completoTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Educação Fisica
Made available in DSpace on 2018-07-23T13:56:38Z (GMT). No. of bitstreams: 1 OlivaAravena_CesarJaime_D.pdf: 5484157 bytes, checksum: 229f93572703056dc1403e23367b9fb5 (MD5) Previous issue date: 1998
Resumo: O presente estudo teve como objetivo investigar os efeitos do estresse físico no processamento das informações visuais periféricas em motoristas do transporte coletivo urbano, os quais foram classificados de acordo com seu tempo de experiência como motoristas profissionais: -5 anos, 5-10 anos e +1Oanos de experiência. Participaram da pesquisa 30 motoristas das cidades de Concepción e Talcahuano, Chile, selecionados de forma aleatória, os quais foram divididos sem três grupos de 10 indivíduos segundo seus tempos de experiência. O campo visual do motorista foi medido em um laboratório com uma luminosidade de 1.500 luxo. A situação experimental consistiu na formação de um campímetro de 1900no eixo horizontal. A tarefa dos motoristas foi pedalar numa bicicleta ergométrica, na qual foram aplicadas três cargas crescentes (leve, submáxima, máxima) de 3 minutos cada uma. Os motoristas foram orientados para detectar e reconhecer os estímulos luminosos (lâmpadas coloridas de 12v, 4w) que apareciam no campo visual periférico, mediante sua visão binocular, sem movimento de olhos e/ou cabeça. Para determinara homogeneidade da amostragem fizeram se uma anamnese geral, um exame oftalmológico e um exame de campimetria dinâmica, pois os indivíduos que participaram do estudo deviam ter visão normal sem correções. Para determinar as cargas de trabalho, realizaram-se, primeiramente,um teste de telemetria para conhecer a resposta cardíaca destes no lugar de trabalho e, num segundo momento, foi realizado um teste de esforço. Para a coleta de dados foi construído um sistema eletromecânico, complementado por um microcontrolador Little Star, que permitiu comandar os estímulos luminosos periféricos de forma que os motoristas pudessem responder de acordo com a sua sensibilidade de percepção visual, enquanto pedalavam na bicicleta ergométrica Com base na análise de variância com medidas repetidas os dados permitem afirmar que existem diferenças estatísticas (p < 0,05) em relação ao tempo de experiência dos grupos e da carga, na decisão perceptiva da detecção. Quanto ao reconhecimento, também revelou diferenças estatísticas em relação à carga (p < 0,05) e interação grupo-carga (p < 0,01). O estudo mostrou, por meio da análise estatística do teste qui-quadrado (X2), que não existe diferença estatística (p > 0,05) no número de erros de detecção e reconhecimento, dependendo do tempo de experiência. Também se verificou, por meio da análise estatística de Friedman (X2p), que as cargas crescentes de trabalho têm influência significativa (p < 0,01) nas decisões perceptuais de detecção e reconhecimento dos indivíduos categorizados como motoristas
Abstract: The present study had as its objective to investigate the effects of physical stress in the peripheric visual information processing in drivers from urban collective transportation, which were classified according to their time of experience as professional drivers: -5 years, 5-10 years and +10years experience. Thirty drivers from the cities of Concepción and Talcahuano, Chile, participated of the research, being selected at random. They were divided in three groups of ten individuals each, according to their time of experience. The drivers' field of view was measured in a laboratory with a luminosity of 1.500 lux. The experimental situation consisted in the formation of a perimeter of 1900on the horizontal axle. The drivers' task was pedaling an ergonometer bicycle where three increasing loads were applied to (Iight, sub-maximum and maximum) of 3 minutes each. The driver ware oriented to detect and recognize the luminous stimulus (color lamps: 12v, 4w) which appeared in the peripheral field of view through his binocular vision, with no movement Itom the eyes and / or the head. To determine the homogencity of the sample, it were applied a general valuation, an ophthalmologic examination and a dinamic campimeter examination, because the individual who participed of the study should have normal vision without corrections. To determine the work loads, it ware first applied a telemeter test to know his cardiac answer in the place of work and, in a second moment, an effort test was aceomplished. For the data colleetion, an electromechanical system was built, complemented by a Little Star miero eontroler wich allowed to command the peripheral lurninous stimulus in sueh a . way that the drivers could answer,aceordingto their visualcperceptioncsensibility while pedaling an ergonometer bicycle. With base in analysis of variation with repeated measures the data allow to affirro that there are statistieal differences (p < 0,05) respeeting the time of experience of the group and the load in the perceptible decision of the detection. The recognition also revealed statistieal differenees respeeting the loads (p < 0,05) and group-Ioad interaction (p < 0,01). The study showed through the statistical analysis of the Chi Squared test (X2) the there is not a statistieal differenee (p > 0,05), in the number of deteetion and recognition mistakes depending on the time experienee. It was also eheeked through the statistieal analysis of Friedman (X2p) that the inereasing loads of work have significant influence (p < 0,01) in the perceptible decision of detection and recognition of the individuals categorized as drivers
Doutorado
Doutor em Educação Física
Gholami, Mohammad. "Shear Induced Migration of Particles in a Yield Stress Fluid". Ohio University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1502793185991791.
Texto completoReynolds, Michael. "The theatrical vision of Count Harry Kessler and its impact on the Strauss-Hofmannsthal partnership". Thesis, Goldsmiths College (University of London), 2014. http://research.gold.ac.uk/10559/.
Texto completoJack, Dominic. "Deep learning approaches for 3D inference from monocular vision". Thesis, Queensland University of Technology, 2020. https://eprints.qut.edu.au/204267/1/Dominic_Jack_Thesis.pdf.
Texto completoStory, David Lee Jr. "Autonomous Multi-Sensor and Web-Based Decision Support for Crop Diagnostics in Greenhouse". Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/306925.
Texto completoNguyen, Dang Dan. "Revêtements polymères sous contraintes environnementales couplées". Phd thesis, Université de La Rochelle, 2012. http://tel.archives-ouvertes.fr/tel-01065519.
Texto completoFoulder-Hughes, Lynda Ann. "Motor function, vision, and growth, in main stream school children born at or below 32 weeks' gestation". Thesis, University of Liverpool, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.369049.
Texto completoRodrigues, Cláudio Roberto Barbosa Simões. "Contribuições ao uso de diodos emissores de luz em iluminação pública". Universidade Federal de Juiz de Fora, 2012. https://repositorio.ufjf.br/jspui/handle/ufjf/1695.
Texto completoApproved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2016-07-02T13:21:41Z (GMT) No. of bitstreams: 1 claudiorobertobarbosasimoesrodrigues.pdf: 5762936 bytes, checksum: 8a7ae73391a9d56af3c18605a924763d (MD5)
Made available in DSpace on 2016-07-02T13:21:41Z (GMT). No. of bitstreams: 1 claudiorobertobarbosasimoesrodrigues.pdf: 5762936 bytes, checksum: 8a7ae73391a9d56af3c18605a924763d (MD5) Previous issue date: 2012-12-17
No intuito de aportar contribuições ao uso de diodos emissores de luz (ou LEDs, do inglês Light Emmiting Diodes) em sistemas de iluminação pública, cobrindo lacunas existentes no cenário nacional, este trabalho traz uma ampla análise sobre este tema. São apresentados conceitos básicos da fotometria clássica e um estudo sobre adaptações da fotometria para baixos níveis de luminância, que é a condição observada nas vias públicas durante o período noturno. Propõe-se a utilização de métricas escotópicas em sistemas de iluminação pública, uma vez que estas melhor representam a real sensação visual (se comparadas às métricas clássicas – fotópicas) nas condições de iluminamento típicas observadas nestes sistemas. Aspectos gerais da iluminação pública e um histórico da evolução do sistema nacional são brevemente apresentados bem como uma discussão sobre a situação atual deste sistema e das tecnologias utilizadas. O trabalho traz também um estudo sobre características ópticas, elétricas e mecânicas dos LEDs e uma análise dos diferentes tipos de LEDs brancos mais utilizados (HB – High Brightness – e HP – High Power – LEDs). Algumas normas e recomendações aplicáveis à utilização de LEDs em iluminação pública são analisadas e discutidas, com o intuito de se investigar lacunas ainda não cobertas pela normatização existente. Análises de resultados de ensaios de laboratório e de campo, inéditos no país, realizados com alguns modelos de luminárias LED para iluminação pública disponíveis no mercado, são também apresentadas. Um estudo sobre acionamento de LEDs é realizado, abordando técnicas de equalização de corrente entre arranjos série de LEDs associados em paralelo e diferentes tipos de circuitos de acionamento para LEDs. São propostas, analisadas e implementadas uma estrutura inédita de baixo custo para a equalização de corrente e um circuito para o acionamento de LEDs baseado na integração de dois conversores cc cc não isolados. A topologia de dois estágios proposta é composta por um conversor boost no primeiro estágio, utilizado para a correção do fator de potência e por um conversor buck no segundo estágio, utilizado para o controle da corrente nos LEDs. Por fim, o acompanhamento da implantação e do desempenho, ao longo de dez meses, do projeto piloto de iluminação pública empregando LEDs instalado no anel viário da Faculdade de Engenharia da UFJF é apresentado.
In order to present contributions to the use of light emitting diodes (LEDs) in public lighting systems, covering gaps on the national scenario, this work encompasses abroad analysis related to this issue. Basic concepts of classical photometry are presented and so a study of photometry’s adaptations for low luminance levels. It is proposed the use of scotopic metrics for street lighting systems, since they can better represent the actual visual sensation (when compared to the classical one – photopic metrics) on its typical nighty conditions. General aspects of street lighting and the history of the national’s public lighting system are briefly presented as well as a discussion about the current situation of the Brazilian system and technologies adopted. The work also brings a study of mechanical, electrical and optical characteristics of LEDs and an analysis of the two different types of commonly used white LEDs (HB – High Brightness – and HP – High Power - LEDs). Some standards and recommendations related to the use of LEDs in street lighting are analyzed and criticized, with the aim of show some gaps not yet covered by the existent standards. An unprecedented analysis regarding laboratory and field test benchmarking, taken for some luminaires available in commerce, is also presented. A study of LED driving is presented, covering equalization techniques for parallel LEDs strings and different types of LED driving circuits. It was proposed, analyzed and implemented a novel and low cost structure for current equalization and an LED driver, based on the integration of two non-isolated dc dc converters. This proposed two stages topology is composed by a boost converter, on the first stage, employed to the power factor correction and a buck converter, on the second stage, to control the LED’s current. Finally, the process of monitoring the installation and the performance, during ten months, of the LEDs public lighting pilot project, on the roadway belt of Engineering Faculty of UFJF is presented.
Rocha, Regina Célia. "Visita de animal de estimação: proposta de atividade terapêutica assistida por animais a pacientes internados em hospital oncológico". Pontifícia Universidade Católica de São Paulo, 2015. https://tede2.pucsp.br/handle/handle/15454.
Texto completoThe pets visit has been coming in this institution since 2011 and professionals in Health Psychology Team with specialization in ATAA coordinate it. The animal is part into the psychological treatment of patients, such as care and comfort references, basic conditions to cope with cancer. The animal may be a reference to improve the quality of life during treatment and hospitalization, reflecting the strong bond that exists in the relationship, in care measures. Have the opportunity to see the pet, even if for the last time brings a sense, providing opportunities on reframing illness and life - through mendering and renewing therapeutic effects. This study aimed to observe the effects of ATAA, here characterized as 'Pets for Business Programme', in a group of three patients with oncological diseases, admitted to ICESP - Institute of São Paulo State Cancer - Frias Octavius Oliveira, comparing them to the literature on the ATAA. According to literature (Brickell, 1984; Struckus, 1989; Wall, 1994; McVarisch, 1995; Panzer-Koplow, 2000; Sorrell, 2006; Souter & Miller, 2007), the effectiveness of Animals Visit Program ICESP improves and balances the psychological state of cancer patients and their families, enhancing their coping resources on life quality improvement both patients and their families, increasing resilience which minimizes psychologic and behavioral symptoms that interfere into treatment and hospitalization, reducing stress, pain and isolation inherent in the process (DIEFENBECK, BOUFFAR, MATUKAITIS, HASTINGS, and COBLE, 2010; HOROWITZ, 2010). Thus, the Animals Visit Program to ICESP confirms the theory there is a great need to re-humanize health practices, developing and providing up humanistic resources for care. It is not just an ethical issue but also rather an urgent need in healthcare paradigm
A Visita de Animal de Estimação acontece nessa instituição desde 2011, sendo coordenada pelos profissionais da Equipe de Psicologia Hospitalar com Especialização em ATAA. Nessa atividade, o animal é parte integrante do tratamento psicológico do paciente, como referência de cuidado e conforto, condições primordiais para o enfrentamento do câncer. O animal pode ser a referência para melhorar a qualidade de vida durante o tratamento e a hospitalização, traduzindo o forte vínculo existente nessa relação em medidas de cuidado. Ter a oportunidade de ver seu animal de estimação mesmo que pela última vez traz um sentido, oportunizando a ressignificação do adoecer e da vida com efeitos terapêuticos reparadores e renovadores. Este trabalho teve como objetivo observar os efeitos da ATAA, aqui caracterizada como Programa de Visita de Animais de Estimação , em um grupo de três pacientes com doenças oncológicas, internados no ICESP Instituto do Câncer do Estado de São Paulo Otávio Frias de Oliveira, comparando-os com a literatura sobre a ATAA. Em concordância com a literatura (Brickel, 1984; Struckus,1989; Wall, 1994; McVarisch,1995; Panzer-Koplow, 2000; Sorrell, 2006; Souter & Miller, 2007), constatamos a eficácia do Programa Visita de Animais de Estimação do ICESP na melhora e equilíbrio do estado psicológico de pacientes oncológicos e familiares, realçando seus recursos de enfrentamento, melhora da qualidade de vida de seus pacientes e familiares, incremento de resiliência, a minimização de manifestações psíquicas e comportamentais que interferem no tratamento e hospitalização, redução do estresse, da dor e isolamento inerentes ao processo (DIEFENBECK, BOUFFAR, MATUKAITIS, HASTINGS, E COBLE, 2010; HOROWITZ, 2010). Dessa forma, o Programa Visita de Animais de Estimação ao ICESP vem comprovar a teoria que, sem dúvida, há uma grande necessidade de se re-humanizar as práticas em saúde, desenvolvendo-se e fornecendo-se recursos humanísticos para o cuidado. E isso não apenas por uma questão ética mas sim pela urgente necessidade na área de saúde de passar do paradigma da conquista ao paradigma do cuidado
Wang, Huijie. "Detection of Humans in Video Streams Using Convolutional Neural Networks". Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-214436.
Texto completoDetta examensarbete undersöker problemet att detektera människor i videströmmar med hjälp av convolutional neural networks (CNNs). Under de senaste åren har CNNs ökat i användning, vilket medfört stora förbättringar i noggrannhet och beräkningshastighet. CNN är nu en populär metod i olika datorseende- och bildigenkänningsproblem. I detta projekt fokuserar vi på en specifik subdomän: detektion av människor. Problemet försvåras ytterligare av att vår videodata är inspelad från en huvudmonterad kamera. Detta medför att vårt system behöver hantera ovanliga betraktningsvinklar och rörelseoskärpa. Efter att ha tagit hänsyn till beräkningshastighet och detektionskvalitet har vi valt att undersöka två olika CNN-modeller: You Only Look Once (YOLO) och Single Shot MultiBox Detector (SSD). Experimenten har designats för att visa hur robusta metoderna är på att detektera människor i bilder med rörelseoskärpa. Vi har också undersökt hur modifikationer på nätverksstrukturer kan påverka slutresultaten. Flera experiment har gjorts i detta projekt. Vi visar att SSD ger bättre resultat än YOLO i många avseenden, vilket beror på att SSD har en bättre designad nätverksstruktur. Genom att utföra fin-anpassning av YOLO och SSD på bildkollektionen i Pascal VOC 2012 kan vi visa att SSD fungerar bra även när vi tränar på färre objektklasser. SSD300 har också god förmåga att lära mönster som påverkats av oskärpa. Vi analyserar även hur valet av position och skalor av de predefinierade sökområdenen påverkar resultaten från SSD300. Resultaten visar att SSD-modellen presterar överlägset i realtidsdetektion i videoströmmar. Genom att anpassa strukturerna ytterligare finns potential att uppnå ännu bättre resultat.
Sych, Alexey y Олексій Сергійович Сич. "Image depth evaluation system by stream video". Thesis, National Aviation University, 2021. https://er.nau.edu.ua/handle/NAU/50762.
Texto completoOne of the data processing applications is stereo vision, in which obtaining a three-dimensional scene is based on models for determining the depths of key points of images from a video sequence or several images. If it is considered an example with a person, then a two-dimensional image is formed on the retina, but despite this, a person perceives the depth of space, that is, has three-dimensional, stereoscopic vision. As a result, in the presence of data on the size of an object, it can be estimated the distance to it or understand which of the objects is closer. When one object is in front of the other and partially obscures it, the person perceives the front object at a closer distance. Because of this, the need arose to teach machine devices to do this for various tasks. Based on the processing results, you can have spatial information for assessing the relief, obstacles while driving, etc. This algorithm is based on combining images of the same object, photographed or filmed on video with constant camera parameters and in the same focal plane from different angles, allows to obtain information about the distance to the object by perspective distortions (discrepancies).
Одним із додатків для обробки даних є стереобачення, в якому отримання тривимірної сцени базується на моделях для визначення глибини ключових точок зображень із відеопослідовності або декількох зображень. Якщо це розглядати як приклад з людиною, то на сітківці утворюється двовимірне зображення, але, незважаючи на це, людина сприймає глибину простору, тобто має тривимірне, стереоскопічне бачення. Як результат, за наявності даних про розмір об’єкта можна оцінити відстань до нього або зрозуміти, який з об’єктів знаходиться ближче. Коли один предмет перебуває перед іншим і частково затемнює його, людина сприймає передній предмет на більш близькій відстані. Через це виникла потреба навчити машинні пристрої робити це для різних завдань. На основі результатів обробки ви можете мати просторову інформацію для оцінки рельєфу, перешкод під час руху тощо. Цей алгоритм заснований на поєднанні зображень одного і того ж об'єкта, сфотографованих чи знятих на відео з постійними параметрами камери і в одній і тій же фокальній площині з різних кутів, дозволяє отримувати інформацію про відстань до об'єкта шляхом перспективних спотворень (розбіжностей).
Bankarusamy, Sudhangathan. "Towards hardware accelerated rectification of high speed stereo image streams". Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-37522.
Texto completoFoucher, Philippe. "Etude d'indicateurs morphologiques pour la caractérisation de l'état hybride de végétaux par analyse d'images". Angers, 2003. http://www.theses.fr/2003ANGE0015.
Texto completoThe purpose of this work is to study how artificial vision, using shape analysis methods, can indicate a modificatifion of the state of the plant. To this end, morphological indicators, allowing a diagnosis in the case of plants when water deficits are fairly high, are researched. The study is realised on images of forsythias looked at from a horizontal plane. The artificial vision is composed of two steps. The first one consists of developing a method to classify pixels of the image in two groups : the plant and its background. Thus, a one hidden layer perceptron was tested with success. The second step concerns the identification of parameters indicating the whole morphological evolution of plants under water stress conditions. Several methods were developped and tested. Three methods allowed to define, in an absolute manner, a threshold above which the plant can be considered stressed. A physiological study of the water status of the plant was undertaken in a parallel way to validate the results obtained-by artificial vision
Pesochinsky, Nina. "Effect of refractive vision correction of myopia and hyperopia through laser surgery (LASIK & PRK) on symptoms of depression, stress perception and self-esteem in adults (22-55)". Thesis, Capella University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10288076.
Texto completoThe purpose of this study was to assess the effects of refractive vision correction through laser surgery (LASIK & PRK) of adults of working age (22-55). This study examined and compared the symptoms of depression, stress perception, and self-esteem prior to surgery and one month after surgery, when sufficient healing has occurred. Research has shown that vision impairment has been reported to be one of the 10 most significant causes of disability in the United States, and, even though clinicians are encouraged to assess emotional response to vision loss, the psychological factors that that play a role in adjustment to vision loss have not been sufficiently studied.
Forysewicz, Monika. "Analysis of the deformation and stress condition in the visco-elastic-plastic materials processing area during a high-speed single-blade cutting : PhD thesis summary : [synopsis]". Rozprawa doktorska, [s.n.], 2015. http://dlibra.tu.koszalin.pl/Content/1058.
Texto completoMcKeon, Sean Patrick. "A GPU Stream Computing Approach to Terrain Database Integrity Monitoring". Digital Archive @ GSU, 2009. http://digitalarchive.gsu.edu/cs_theses/65.
Texto completoVu, Manh Huyen. "Effet des contraintes et de la température sur l'intégrité des ciments des puits pétroliers". Phd thesis, Université Paris-Est, 2012. http://pastel.archives-ouvertes.fr/pastel-00861315.
Texto completoRodrigues, Valéria Cristina. "Distribuição espacial e bem-estar de aves poedeiras em condições de estresse e conforto térmico utilizando Visão Computacional e Inteligência Artificial". Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/11/11131/tde-13032007-161048/.
Texto completoThe animal behavior researches have as objective identify and quantify suffering signals in order to eliminate the problems obeying the welfare norms. The alterations of these behaviors show the ambient necessities for the animals\' survivals. In certain cases, only the abnormal behaviors can evidence a situation of stress. When the environment temperature changes, the animals present some answers to keep the body\'s temperature constant, starting with the maximum conservation of energy as the inactivity. Two of the most effective characteristics of the thermoregulatory behavior includes environment selection and position adjustment. Image processing and analysis techniques can collaborate with the research of information contained in images of confined animals. Invasive methods of quantification of the behavior show that there is interference of the experimenter on the animal reactions compromising the research results. This work aimed to know, through the Computer Vision, information about the laying hens\' spatial distribution at the thermal comfort and stress situations. Image sequences of two groups of 5 birds (hy-line W36) aging 21 weeks in conditions of thermal comfort (T= 26°C ± 2°C and UR= 60% ± 2%) and 5 birds in conditions had been analyzed of stress thermal (T= 35°C ± 2°C and UR= 70% ± 2%) and controlled in climatic chamber. The birds had been demarcated with not toxic inks in the dorsal region. Through colors clusters techniques in MATLAB 7.0 ® and the localization of the geometric center of the birds, it was possible to analyze the frequency of these birds in the nest regions, feed through, water through, free area and \"water through + feed through\", and through of Artificial Neural Network was possible to have standards shapes of bodies birds and to refers to some behaviors. The spatial distribution is an important indicative fort of the animal necessities in different conditions evidencing that the frequency in some regions can be a discomfort indicative. The processing technique and analysis of the images reveals as a trustworthy method and free of subjectivity or of the fatigue human`s influence in support of the dynamics classification of the confined animals. It is about one of the efficient form to analyze the images to have a better understanding of the dynamics of the confined animals` dynamics throughout time. The necessity of the animal is demonstrated through frequencies in determined regions of interest for its welfare condition.
Godard, Rebecca. "La prévention des symptômes d'intrusions traumatiques : une approche cognitive". Thesis, Université de Lorraine, 2013. http://www.theses.fr/2013LORR0341/document.
Texto completoCan Tetris game really reduce analogue traumatic intrusions? A recent research conducted by Holmes et al. (2009) show this conclusion. Traumatic intrusions are one of three main symptom of post-traumatic stress disorder. During exposition to a traumatic event, information processing is not the same that usually. Under extreme stress, perceptual information is mainly processed leading to a lack of conceptual framework. This maladjustment prevent the build of integrate representation to autobiographical memory. Full of sensorial and perceptive details, traumatic intrusions lead to neurovegetative hyperarousal, emotional and psychological distress when reactivated. Current know to cognitive sciences we allow better understanding to processing at work in build of traumatic intrusions. We want to continue the research of Holmes et al. indicating that the realization of visuospatial task reduces traumatic intrusions
Bouvet, Geoffrey. "Relations entre microstructure et propriétés physico-chimiques et mécaniques de revêtements époxy modèles". Thesis, La Rochelle, 2014. http://www.theses.fr/2014LAROS039/document.
Texto completoThis work highlights the microstructure-properties relations inside representative epoxy based model coatings for anticorrosion paints. These relations have been established for the initial state as well as the hygrothermal ageing. First, we characterised physico-chemical and mechanical properties of the totally crosslinked DGEBA/DAMP stoichiometric system. These properties have been compared to the DGEBA/TETA system and they showed the strong influence of the microstructure on these initial properties. Cyclic hygrothermal ageing have been completed at different temperatures on free films, in order to measure the impact of the microstructure on the durability of epoxy systems. This work has shown the influence of the water-polymer interactions on diffusion phenomena. Moreover, the evolutions of several physico-chemical and mechanical properties have been characterised using DMA (submersible clamps), during different sorption-desorption steps. A pseudo-fickian behaviour has been evidenced during the first sorption, and it was followed by a fickian behaviour for all other steps. The inherent causes of this evolution have been proposed, by considering microstructural reorganisations of the studied epoxy systems. Other hygrothermal ageing have been carried out using EIS on coatings, in order to study the effects of the coating/steel substrate interface on diffusion phenomena, especially the role of residual stresses. We finally studied the influence of the visco-elastic stress on the coating water intake phenomena
Fernandes, Leandro Henrique Oliveira. "Simulação de fenômenos óticos e fisiológicos do sistema de visão humana". Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/55/55134/tde-09052008-161636/.
Texto completoThe increase in performance of the modern computers has driven scientific work in the areas of computer simulation. Many authors use in their research commercial tools that use embedding algorithms, which sources are not provided, and it makes harder and sometimes impossible, the development of novel theories or experiments. This work explores this gap left for those authors. We present a computational framework capable to reproduce the optical and physiological phenomena of the human visual system. We construct schematical models of the human eye from quadrics surfaces and consider an algorithm of realistic ray tracing. Afterward, we performed a study on schematics models and in addition we introduce, in these models, in-vivo data obtained from corneal topography machine and extract optical information. We calculate the Zernike coefficients in the models for different sizes of pupil and measures of aberration of the human eye. The results are in agreement with related work and simulations with in-vivo data are according with the produced by a commercial wave-front device. This work is an effort in using to advantage the information acquired for the modern equipment of ophthalmology, besides assisting the understanding of biological visual systems, it also helps the development of artificial vision systems and the designing of optical systems
Bérard, François. "Vision par ordinateur pour l'interaction homme-machine fortement couplée". Phd thesis, Université Joseph Fourier (Grenoble), 1999. http://tel.archives-ouvertes.fr/tel-00004804.
Texto completoVictor, Trent. "Keeping Eye and Mind on the Road". Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-6241.
Texto completoAhmed, Sameer. "Application d'un langage de programmation de type flot de données à la synthèse haut-niveau de système de vision en temps-réel sur matériel reconfigurable". Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2013. http://tel.archives-ouvertes.fr/tel-00844399.
Texto completoCasagrande, Cristiano Gomes. "Desafios da iluminação pública no Brasil e nova técnica de projetos luminotécnicos fundamentada na fotometria mesópica". Universidade Federal de Juiz de Fora (UFJF), 2016. https://repositorio.ufjf.br/jspui/handle/ufjf/2573.
Texto completoApproved for entry into archive by Diamantino Mayra (mayra.diamantino@ufjf.edu.br) on 2016-09-26T20:30:58Z (GMT) No. of bitstreams: 1 cristianogomescasagrande.pdf: 22950240 bytes, checksum: 13f9d8db507365054c57ae6d1bfd91ae (MD5)
Made available in DSpace on 2016-09-26T20:30:58Z (GMT). No. of bitstreams: 1 cristianogomescasagrande.pdf: 22950240 bytes, checksum: 13f9d8db507365054c57ae6d1bfd91ae (MD5) Previous issue date: 2016-04-14
Os sistemas de iluminação pública (IP) no Brasil atravessam um momento de mudanças significativas, que implicam em novos paradigmas, desafios e perspectivas para o setor. Essas transformações começam com a transferência dos ativos de IP para os municípios, exigindo que os gestores municipais estejam preparados e capacitados para assumir esse serviço público essencial que anteriormente não era de sua responsabilidade. Além disso, novas tecnologias de iluminação, como os diodos emissores de luz (LEDs), surgem como alternativa às tecnologias convencionais, acarretando muitos impactos e alterações de conceitos no projeto, gestão e manutenção dos sistemas de IP. Assim, esta tese traça um panorama da iluminação pública no país, abrangendo questões referentes à gestão e manutenção do sistema, enfatizando os desafios ligados à transferência dos ativos de iluminação pública para os municípios, além da complexidade inerente à mudança de tecnologia para os LEDs. A discussão é organizada em duas vertentes principais: a gestão da IP, com ênfase nos desafios associados à transferência dos ativos; e a consolidação de novas tecnologias, sobretudo os LEDs. Nesse âmbito, com o objetivo de contribuir para uma utilização mais eficiente dos sistemas de iluminação, este trabalho propõe a consolidação da fotometria mesópica na elaboração de projetos luminotécnicos de IP, uma vez que, nesses casos, é comum deparar-se com condições de baixa luminância, nas quais a sensibilidade espectral da visão humana é diferente das condições supostas pela fotometria clássica. Neste sentido, procura-se explorar em detalhes a recomendação CIE 191:2010, que propõe multiplicadores de correção para a adaptação de grandezas fotométricas convencionais em grandezas mesópicas. Todavia, para se obter tais multiplicadores, é necessária a obtenção da relação entre os fluxos escotópico e fotópico da fonte luminosa (relação S/P), o que exige equipamentos especiais não facilmente disponíveis à maior parte dos projetistas. Com o objetivo de contornar essa dificuldade, esta tese de doutorado propõe uma equação geral que permita realizar o cálculo de S/P em função da temperatura de cor correlata e do índice de reprodução de cor da fonte de luz a ser empregada, que são informações normalmente disponibilizadas nos catálogos de fabricantes ou embalagens de lâmpadas comerciais. A equação encontrada apresentou coeficientes de correlação e de determinação próximos da unidade, o que lhe garante boa confiabilidade. Pela obtenção da relação S/P com auxílio da técnica proposta, um projeto luminotécnico típico tem sua rotina alterada, algo que é demonstrado e exemplificado ao final do texto.
The street lighting systems in Brazil are going through a time of significant changes that involve new paradigms, challenges and prospects for the sector. These changes begin with the transfer of street lighting assets to municipalities, demanding that municipal managers are prepared and able to manage this essential public service that previously was not your responsibility. In addition, new lighting technologies such as light-emitting diodes (LED) are an alternative to conventional technologies, resulting in many impacts and changes of concepts in the design, management and maintenance of street lighting systems. Thus, this thesis provides an overview of street lighting in Brazil, covering issues relating to the management and maintenance of the system, emphasizing the challenges linked to the transfer of street lighting assets to the municipalities, in addition to the inherent complexity of LED technology. The discussion is organized into two main areas: the management of system, with emphasis on the challenges associated with the transfer of assets; and the consolidation of new technologies, especially the LED. In this context, in order to contribute to a more efficient use of lighting systems, this thesis proposes the consolidation of mesopic photometry in the development of street lighting projects, since in such cases it is common to encounter poor conditions luminance, in which the spectral sensitivity of human vision is different from the conditions in the classical photometry. In this sense, it is covered in detail the CIE 191:2010 technical report, which proposes correction factors for the adaptation of conventional photometric quantities in mesopic quantities. However, to obtain such factors, it is required to obtain the relationship between the scotopic and photopic luminous flux of light source (S/P ratio), which requires special equipment not readily available to most lighting designers. Thus, this PhD thesis proposes a general equation that provides the S/P ratio as a mathematical function of correlated color temperature and color rendering index of the light source, which are information usually available in catalogs of manufacturers or products packaging. The proposed equation showed correlation coefficient and coefficient of determination parameters closed to unity, which guarantees good reliability. By obtaining the S/P ratio with the aid of proposed technique, a typical lighting design has changed his routine, something that is demonstrated and exemplified in final of the text.
Parolini, Pedro Lucas Leite. "Identificação dos perfis de patrocinadores que agregam mais valor aos eventos de corrida de rua: um estudo na visão dos consumidores do esporte". Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/39/39136/tde-13022017-120037/.
Texto completoIn the 90s the street race underwent a significant change in your event concept. The entertainment character began to be exploited by the event producers in this sector, giving rise to the concept of fashions races. Only in the state of São Paulo were offered 415 street racing events in 2015. Realizing this expanding market, companies from various sectors are seeking to combine the sport in question, and in turn producing these events seek these sponsors for funding these activities. Thus, objective of this study was to identify the profile of sponsors that add more value to street racing events: a study in view of the consumers of this sport. To meet this objective we chose a qualitative methodology exploratory. A mixed questionnaire to a sample of 407 runners in four road race event was applied. The questionnaire contained open and closed questions, which the frequencies were analyzed the responses and their contents respectively. As a result we got a sponsor profile that is congruent segments with sport and street racing as sports segment, food and shoes for runners. Moreover, according to consumers, these sponsors must activate their brands during the sport events. These activations should be associated with attributes that consumers consider as street racing attributes as health, friendship, quality of life, well-being, socialization and fun. It is concluded that there are sponsors that add more value than others in the consumer\'s view of this sport. This information can be useful for street racing producers, since these companies should be sought in a possible prospect for sponsors for the sport events. Sponsors that add more value to the event are perceived by consumers, resulting in a positive perception of that event in question and its sponsors
Battaini, Michael. "Deformation behaviour and twinning mechanisms of commercially pure titanium alloys". Monash University. Faculty of Engineering. Department of Materials Engineering, 2008. http://arrow.monash.edu.au/hdl/1959.1/61321.
Texto completoMahé, Gwendoline. "La reconnaissance visuelle des mots chez le dyslexique : implication des voies ventrale et dorsale". Phd thesis, Université de Strasbourg, 2013. http://tel.archives-ouvertes.fr/tel-00919475.
Texto completo