Generic Geometry
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. A meta-analysis over geometric modeling simplifications in ENVI-met urban climate simulation
Resumo A modelagem do clima urbano requer a descrição da geometria do ambiente construído, entretanto a complexidade do tecido urbano traz incertezas sobre o formato e localização exata das edificações. Portanto, durante o processo de planejamento, modelos de geometria simplificada podem ser mais apropriados que modelos detalhados. Nessa pesquisa foi
Ambient. constr.. Publicado em: 2019-03
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2. Geometria de superfícies em R3 do ponto de vista de contato / Geometry of surfaces in R3 from a contact viewpoint
Neste trabalho é apresentado um estudo sobre o contato de superfícies imersas no R3 com algumas subvariedades, a saber, esferas e círculos. Para este estudo são necessários alguns pré-requisitos da teoria de singularidades. Para medir o contato entre as superfícies e estas subvariedades, utiliza-se uma variação da função distância ao quadrado. O
Publicado em: 2010
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3. Boundary Element Method for Electrical Impedance Tomography / Método dos elementos de contorno para tomografia de impedância elétrica
The Electrical Impedance Tomography (EIT) is a quite new technique and has proved to be promising in obtaining inner body images exploring the differences between electric qualities (conductivity and permissity) of different materials that constitute it. The technique is based on applying an electric potential profile or electric current on the boundary of t
Publicado em: 2009
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4. Aerodynamic coefficient prediction using neural networks.
The present work discusses the application of neural networks for the accurate prediction of aerodynamic coefficients of airfoil and wing-body configurations. Meta-models based on neural-network are able to handle non-linear problems with a large amount of variables. In this highlight, an efficient methodology employing neural networks for predicting aerodyn
Publicado em: 2008
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5. Construções genéricas de espaços de Asplund C(K) / Generic constructions of Asplund spaces C(K)
In this work we consider a method of generic constructions of compact scattered non-metrizable spaces developed by Baumgartner, Shelah, Rabus, Juhasz and Soukup. We introduce new techniques and obtain new applications both relevant to topology of compact spaces and the geometry of Banach spaces of continuous functions. The new techniques concern new amalgama
Publicado em: 2008
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6. A camera calibration system / Um sistema de calibração de câmera
A camera calibration procedure corresponds to determine the digital geometric and optical characteristics of the camera from a known initial data set. This problem can be divided into three steps: a) acquisition of initial data; b) calibration process itself; and c) optimization. This work presents the development of a calibration tool based on a generic arc
Publicado em: 2007
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7. SCALABLE TOPOLOGICAL DATA{STRUCTURES FOR 2 AND 3 MANIFOLDS / ESTRUTURAS DE DADOS TOPOLÓGICAS ESCALONÁVEIS PARA VARIEDADES DE DIMENSÃO 2 E 3
Research in data structure area are essential to increase the generality and computational effciency of geometric models` representation. In this work, we present two new scalable topological data structures, one for triangulated surfaces, called CHE (Compact Half { Edge ), and the another for tetrahedral meshes, called CHF (Compact Half { Face ). Such struc
Publicado em: 2006
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8. Um modelo genérico para fluxos em estruturas auto-similares e a sua relação com espectros afins: da geometria da árvore brônquica às características dos sons pulmonares. / A generic model for flows in self-similar strutuctures and its relation with affine spectra: from the bronchial tree geometry to the spectral characteristics of the lung sounds
Neste trabalho um esquema teórico é proposto para a produção de sons pulmonares normais de altas freqüências. Este esquema é baseado na discretização em multi-escala do fluxo de ar em elementos discretos independentes que interagem de maneira sintonizada com a estrutura geométrica que representa a árvore brônquica. Os resultados mostram que o esp
Publicado em: 2004
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9. MULTI-RESOLUTION FOR VISUALIZATION OF NATURAL OIL RESERVOIRS / MULTI-RESOLUÇÃO PARA A VISUALIZAÇÃO DE RESERVATÓRIOS NATURAIS DE PETRÓLEO
Current flow-simulation meshes of natural oil reservoirs (NOR) are composed of hundreds of thousands of hexahedral cells. The visualization of the geometry of these cells superimposed with color attributes to represent properties and flow results requires the rendering of an unstructured mesh of millions of triangles. Current graphics hardware does not allow
Publicado em: 2002
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10. THREE DIMENSIONAL ELASTOPLASTIC CONTACT ANALYSIS BY LARGE STRAINS / ANÁLISE ELASTO-PLÁSTICA DO PROBLEMA DE CONTATO COM GRANDES DEFORMAÇÕES EM ESTRUTURAS TRIDIMENSIONAIS
In this theses the frictionless contact problem between two- dimensional or three-dimensional deformable bodies with elasto-plastic behavior under finite strains is studied. The numeric solution procedure is based on an incremental- iterative strategy and includes the treatment of geometric and physical nonlinearities as well as those which arise from contac
Publicado em: 1998
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11. Conversion of agonist site to metal-ion chelator site in the β2-adrenergic receptor
Previously metal-ion sites have been used as structural and functional probes in seven transmembrane receptors (7TM), but as yet all the engineered sites have been inactivating. Based on presumed agonist interaction points in transmembrane III (TM-III) and -VII of the β2-adrenergic receptor, in this paper we construct an activating metal-ion site between th
The National Academy of Sciences.