Illumination Models
Mostrando 1-12 de 20 artigos, teses e dissertações.
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1. Activity pattern of Cuniculus paca (Rodentia: Cuniculidae) in relation to lunar illumination and other abiotic variables in the southern Brazilian Amazon
Understanding what influences the activity of organisms is important for both ecological understanding and species conservation. Using data from 2,707 camera trap days distributed across 24 forest sites, we present quantitative analyses of the activity pattern of Cuniculus paca (Linnaeus, 1766) in southern Amazonia. We compared the activity pattern of this s
Zoologia (Curitiba). Publicado em: 2011-12
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2. REAL TIME SKIN RENDERING FOR GAMES / RENDERIZAÇÃO DE PELE HUMANA EM TEMPO REAL PARA JOGOS
Skin rendering is a fundamental research topic for the digital entertainment industry. Realistic results are very challenge to obtain, especially for real time applications. In this dissertation, two skin rendering techniques are studied and developed to simulate light behavior through human skin. Both techniques are based on physic and empiric models and us
Publicado em: 2010
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3. DeterminaÃÃo de fatores de influÃncia no acesso aos serviÃos de saneamento no estado do Cearà / Determination of factors of influence on access to sanitation services in the state of CearÃ
ABSTRACT The positive externalities occasioned by the basic sanitation, included the access to the service at the regulatory mark of the sector. In this context the supply enlargement turns up as a necessary condition, but not enough for a deficit reduction of these services. As we pursue to answer the investigative problem of this work - ? Which reasons det
Publicado em: 2008
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4. Modelling and measurements of illuminance for diverse atmospheric conditions in the northeast of Brazil / Medidas e modelagem da iluminÃncia para diversas condiÃÃes de cÃu no Nordeste do Brasil
In Brazil, and particularly in the Northeast region, illuminance measurements are not a part of the routine measurements in meteorological stations. Therefore, the availability of information on illuminance is rarer than the measurements carried out on solar irradiation. In this context, two stations for measuring illuminance and solar irradiation were insta
Publicado em: 2006
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5. "Geographic Cosmography: the astronomy in geography teaching" / "Cosmografia geográfica: a astronomia no ensino de geografia"
This research relates Astronomy Teaching to Geography Teaching and approaches a great number of subjects that express important relations between the terrestrial knowledge and the celestial knowledge. We have studied a field that is part of Cosmography and consists in a new reading in the Geography area, which is designated as "Geographic Cosmography", inste
Publicado em: 2006
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6. Modelagem automática de cenas com iluminação local a partir de imagens
This thesis deals with the problem of acquiring the models of a scene from its images, where the correspondence between the image pixels intensities and the real colors of the scene cannot be determined using a local illumination model of the interaction of the light with the scene. More specifically, the problem is treated in two particular cases in distinc
Publicado em: 2005
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7. ASSESSMENT OF NATURAL ILLUMINATION CALCULUS METHODS THROUGH ZENITHAL OPENINGS / AVALIAÇÃO DOS MÉTODOS DE CÁLCULOS DE ILUMINAÇÃO NATURAL ATRAVÉS DE ABERTURAS ZENITAIS
This paper analyzes and evaluates the different results of calculus methods of natural illumination forecast in relation to measurement values through a zenithal opening and shows the adopted methodology when using small study models for carrying out such measurements. The comparative analysis of these results shows it validates the improvements and contribu
Publicado em: 2004
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8. Segmentação de imagens por classificação de cores: uma abordagem neural. / Image segmentation by color classification: a neural approach.
The present work approaches the segmentation of colored images through the process of color classification, i.e., the segmentation of images based on the color attribute of pixels. We look for a color classification as close as possible of human classification. In other words, we look for a robust classification with respect to the variation of illumination
Publicado em: 2000
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9. Análise teórica de emissores homogêneos (n+) e duplamente difundidos (n+n++) em células solares de silício: implementações ao processo de fabricação. / Theoretical analysis of homogeneous (n+) and double diffused (n+ n++) emitters of silicon solar cells implementations to the fabrication process.
Searching for the improvement of n+pp+ solar cell efficiencies, a theoretical model was developed in order to optimize the emitter parameters and several technological processes were implemented in the fabrication of these devices. Thus, a code considering the characteristics of the different regions n+ emitter, base region and p+ emitter were developed. The
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/07/1998
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10. Propriedades fotoeletroquimicas do polipirrol-dodecilsulfato
The photoelectrochemical properties of polypyrrole, PPy, doped with a surfactant are systematically examined in this work. Dodecylsulfate, DS, makes possible the synthesis in an aqueous medium yielding flexible films with good electrochemical, mechanical and electrochromic stabilities. The interaction of light with the surface of a reduced PPy-DS film (p-typ
Publicado em: 1998
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11. ASPECTOS DE LA VISUALIZACIÓN VOLUMÉTRICA DE DATOS SÍSMICOS / ASPECTS ON VOLUME RENDERING OF SEISMIC DATA / ASPECTOS DA VISUALIZAÇÃO VOLUMÉTRICA DE DADOS SÍSMICOS
A visualização volumétrica direta (volume rendering) aplicada a dados sísmicos é uma técnica ainda emergente. Apenas recentemente alguns software comerciais tornaram-se disponíveis para a indústria de petróleo. Comparado ao método tradicional de interpretação sobre seções bidimensionais, essa técnica representa uma alternativa interessante que
Publicado em: 1998
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12. Statistics of the maintained discharge of cat retinal ganglion cells.
Action potentials were recorded from single fibres in the optic tracts of anaesthetized cats. Continuous records were obtained at various levels of scotopic and mesopic retinal illumination. In some cases, the light intensity was modulated by a pseudorandom Gaussian white-noise signal. The maintained discharge of on-centre neurones increased while the mainta