Point Set Surfaces
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Statistics of the Pareto front in Multi-objective Optimization under Uncertainties
Abstract In this paper we address an innovative approach to determine the mean and a confidence interval for a set of objects analogous to curves and surfaces. The approach is based on the determination of the most representative member of the family by minimizing a Hausdorff distance. This method is applied to the analysis of uncertain Pareto frontiers in m
Lat. Am. j. solids struct.. Publicado em: 14/11/2018
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2. Extensiometria óptica por Moiré geométrico digital para anãlise de tensões no plano / Optical extensometry by digital geometric Moiré for in-plane stress analysis
The study of the behavior of building structures pass through the determination of the strain and stresses to evaluate the level of local and global security against the active actions. In the last years in Brazil, the extensometers have been commonly used to measure the strain at a specific single point. The optical extensometry presents itself as an altern
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/06/2011
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3. Um modelo elasto-plástico para a análise da aderência em peças de concreto armado / An elasto-plastic model for analysis of bond in reinforced concrete
The bond mechanism between deformed bars and concrete is a complex phenomenon, influenced by many parameters. Many models have been developed over the years regarding this subject, but only a few have satisfactorily reproduced the physical phenomenon. In this work, to simulate the bond behavior, we propose a two-dimensional interface model where both concret
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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4. Árvores de Steiner: Teoria, Geração Numérica e Aplicações / Steiner trees: Theory, Numerical Generation and Applications
Given a set of points in the plane, which we call terminals, one proves that they are always connected by a minimal graph called Steiner tree. The terminals may represent main connection route points, circuit elements or network computer servers. That is, the problem is to optimize traffic among the terminals whenever this is represented by a tree of shortes
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/12/2009
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5. Superfícies de pontos dinâmicas / Dynamic point set surfaces
The study of the behaviour of fluids is an ancient field in natural sciences. Recently, engineering phenomena that were empirically studied started to be done with computacional aid. The Computational Fluid Dynamics (CFD) is the area of science that studies computational methods for computer simulation of fluid flow, and often is the most practical way, or t
Publicado em: 2009
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6. Metodologia para definição de estratégia de controle e avaliação de ruído ocupacional
The high levels of noise have been a serious problem in the workplace, especially in industries, causing damage to health of many employees. However, in many cases, control of noise levels requires complex engineering measures, with attendant high costs and thus demands good technical and financial planning. In this context, this work aimed to develop a meth
Publicado em: 2009
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7. Regiões de confiança para a localização do ponto estacionário em superfícies de resposta, usando o método "bootstrap" Bayesiano / Confidence region on the location of the stationary point in response surfaces, a Bayesian bootstrap approach
Experiments in which one or more response variables are influenced by several quantitative factors are very common in agricultural, chemistry, biology and other areas. In this case, the research question consists in studying this relation, being of great utility the use of response surface methodology (RSM). In this context determining the level of the facto
Publicado em: 2008
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8. FormaÃÃo de biofilme em aÃo inoxidÃvel por Aeromonas hydrophila e Staphylococcus aureus sob diferentes condiÃÃes de cultivo / Biofilm formation by Aeromonas hydrophila and Staphylococcus aureus on stainless steel AISI 304 in different conditions of cultivation
The microbial biofilm formation in surfaces used in food processing, like stainless steel, has been the focus in several researches in function of the injuries of its occurrence. These communities can act as constant point of contamination and cause other losses, as surface corrosion. In this context, Staphylococcus aureus and Aeromonas hydrophila are consid
Publicado em: 2008
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9. Influência da dose de energia sobre o grau de conversão, tensão de polimerização, propriedades mecânicas e microinfiltração in vitro de restaurações em compósito / Influence of the radiant exposure on the degree of conversion, polymerization stress, mechanical properties and in vitro microleakage of composite restorations
Proposition: The aim of this study was to verify the influence of radiant exposure applied to a composite on the degree of conversion (DC), polymerization stress (PS), maximum rate of reaction (Rp max), mechanical properties (flexural strength/FS, elastic modulus/E, Knoop hardness/KHN) and microleakage of in vitro restorations using two adhesive systems. Met
Publicado em: 2007
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10. Reconstrução de superfície a partir de um conjunto não-organizado de pontos
Surface reconstruction is the area dedicated to get complex geometric models from a finite set of unorganized points of object surfaces. This area has become increasingly important in Geometric Modeling and other applications such as Computer Graphics, Computer Vision, Virtual Reality and Engineering. This Master thesis describes a broad survey of the main r
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/10/2005
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11. Aesthetics, semiotics, and pragmatism -Basis to a Peircean philosophy of art. / Estética, pragmatismo &Semiótica: Bases para uma filosofia da arte peirceana
This thesis is a reflection about the work of art, found mainly in Charles Sanders Peirces Phenomenology, Semiotics, Aesthetics, and Pragmatism. In the following three chapters we will try to show evidence of an implicit Philosophy of Art in the authors vast work. First, in Phenomenology of Art, the problem of the nature of artwork surfaces through a discuss
Publicado em: 2005
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12. Litoestratigrafia e deformação cenzóica na região de Icapuí, Ceará, e implicações para a estruturação de campos de petróleo na borda ocidental da bacia Potiguar(NE do Brasil)
This thesis deals with the sedimentological/stratigraphic and structural evolution of the sedimentary rocks that occur in the NW continental border of the Potiguar Basin. These rocks are well exposed along coastal cliffs between the localities of Lagoa do Mato and Icapuí, Ceará State (NE Brazil). The sedimentological/stratigraphic study involved, at the ou
Publicado em: 2003