Surface Representation
Mostrando 13-24 de 119 artigos, teses e dissertações.
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13. Fotografia e movimentos sociais : políticas de visibilidade na cena contemporânea
This research aims to investigate the problem of Politics of Visibility as a set of interventions organized by social movements in order to build visibility for their political and cultural projects. To this end, an approach that was promoted at different times sought to develop research ranging from the establishment of an arrangement as the theoretical and
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/03/2012
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14. Transformações do espaço e estratégias mercantis na Lagoa Jacuném / Transformações do espaço e estratégias mercantis na Lagoa Jacuném
Nature, present in abundance in the past, with the passage of time has been transformed into rare element. With the growth of cities, it has been transformed, replaced by the built environment and destroyed, getting loads of pollutants and surviving in small fragments. The impossibility of its recreation as it was in the past, turned nature into a rare and a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/08/2011
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15. Representação de superfícies livres utilizando partição da unidade implícita no sistema Freeflow / Free surface representation on freeflow using partition of unity implicits
Este trabalho consiste em introduzir uma nova abordagem de representação de superfície no ambiente de simulação Freeflow2D. Consiste em usar Partição da Unidade Implícita para estimar da superfície a geometria, normais e curvatura. Procurando se valer das vantagens de métodos do tipo meshless (sem malha) conservando no entanto a malha Lagrangiana,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/06/2011
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16. OPACIDADE FONOLÓGICA EM PORTUGUÊS: UMA RESPOSTA VIA TEORIA DA OTIMIDADE CONEXIONISTA PARA UMA QUESTÃO CARTESIANA / PHONOLOGICAL OPACITY IN PORTUGUESE: A RESPONSE VIA CONNECTIONIST OPTIMALITY THEORY TO A CARTESIAN QUESTION
Phonological opacity refers to rules/ processes that should apply in a given context but don‟t or apply even without a visible context. As such processes of underapplication and overapplication are found in the intermediate stages in-between the underlying and surface forms, the Classic Generative Theory (CGT) used to accommodate them without much ado
Publicado em: 2011
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17. A semi-analytical computation of the Kelvin kernel for potential flows with a free surface
A semi-analytical computation of the three dimensional Green function for seakeeping flow problems is proposed. A potential flow model is assumed with an harmonic dependence on time and a linearized free surface boundary condition. The multiplicative Green function is expressed as the product of a time part and a spatial one. The spatial part is known as the
Computational & Applied Mathematics. Publicado em: 2011
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18. Vibroacustografia na avaliação tridimensional de artroplastia total de quadril / Vibro-acoustography in the tridimensional evaluation of total hip arthroplasty
Vibro-acoustography (VA) is a high lateral resolution (<0.7 mm), speckle-free, non- ionizing and non-invasive image based on the nonlinear combination phenomenon of ultrasound waves (MHz) that generates a narrow focus region of low frequency (kHz). In this work, we propose a VA-based tridimensional evaluation of the exposed area of implants, after total hip
Publicado em: 2011
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19. Estado e relações internacionais : uma comparação crítica entre Hans Morgenthau e Nicos Poulantzas / State and international relations : a critical comparison between Hans Morgenthau and Nicos Poulantzas
This work aims the analysis of the concept of State and the function of this institution in international relations. It seeks critically compare the concept of the state used by Hans Morgenthau, acclaimed author of the realist theory of international relations, with the marxist theory of the state systematized by Nicos Poulantzas in Power Politic and Social
Publicado em: 2011
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20. Investigation of the adjoint method in aerodynamic optimization using various shape parameterization techniques
This paper studies the effect of design variables vector on automatic aerodynamic shape optimization in the adjoint method. Three shape techniques are studied: surface points, relations of the NACA 4-digit airfoil series and Hicks-Henne "Bump" Functions. First, this paper presents the complete formulation of the optimal design problem for the Euler equations
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2010-06
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21. An analytical treatment of the energy spectrum of hydrogen-like atoms perturbed by a generalized van der Waals potential
Hydrogen-like atoms are two-particle systems governed with spherically symmetric potentials, their non-relativistic Schrödinger equations can be solved analytically yielding exact information about their spectra. Vigorous interest in the investigation of their behavior under the influence of external fields has been increased over the years. The main goal o
Brazilian Journal of Physics. Publicado em: 2009-06
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22. Mathematical description of curved domains via transfinite interpolation / Descrição matematica de geometrias curvas por interpolação transfinita
In this work a methodology is developed for mathematical representation of curved domains, applicable to any type of finite element geometry. This methodology is a generalization of the mathematical model of a geometric representation presented in 1967 by Steven Anson Coons, called "Bilinearly Blended Coons Patches", which patch a rectangular surface in four
Publicado em: 2009
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23. Detecção de mudanças e recuperação de forma em mapas 3D basedos em nuvens de pontos
This work proposes a framework to efficiently detect and segment changes in 3D point clouds. Initially, we simplify the point cloud which generates a tree representation in order to preserve the relevant characteristics using surface variation as the key constraint. Then, a combined approach using Gaussian Mixture Models (GMM) and the Earth Mover s Distance
Publicado em: 2009
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24. Análise do /s/ pós-vocálico no português brasileiro: coda ou onset com núcleo foneticamente vazio?
There has been a lot of discussion about the post-vocalic /s/ and its variable behavior in Brazilian Portugueses, as in Brescancini Brescancini (2002); Callou, Leite, Moraes (2002); Hora (2003); Ribeiro (2006); among others. All of them agree that /s/ occupies the coda position, alternating alveolar (ca[s]ca, me[z]mo, feli[s]), palatal (po[]te, de[
Publicado em: 2009