Geometric Representation
Mostrando 13-24 de 54 artigos, teses e dissertações.
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13. 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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14. Uma alternativa para o ensino de geometria : visualização geométrica e representações de sólidos no plano
Essa dissertação aborda a visualização geométrica e a representação de objetos tridimensionais em diagramas bidimensionais. O objetivo da pesquisa é a criação de uma seqüência didática que atenda esses propósitos. Para desenvolver essa seqüência, foram realizadas diversas atividades piloto com sujeitos do ensino fundamental, médio e superior
Publicado em: 2009
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15. Um roteiro para a criação de programa computacional dedicado à geração de pré-projeto arquitetônico de habitações sociais: realimentação de modelo a partir de avaliações pós-ocupação / A roadmap for the creation of dedicated software the generation of pre-architectural project of social housing: feedback model from Post-Occupancy Evaluations
The possibility of living in environments that have been sized on the basis of anthropometric studies and post-occupancy evaluations (POEs) of the functionality of buildings is the consequence of architectural design processes yet to be consolidated. This technology has enabled greater control over all stages in the construction of buildings, the pre-design
Publicado em: 2009
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16. Uma Representação de Weierstrass para Superfícies Mínimas em H3 e H2 × R.
The Weierstrass representation of minimal surfaces in R3 and its generalization to Rn shows is a very useful tool in the study of minimal surfaces in these spaces. In this work we want to describe a type Weierstrass representation for immersions simply connected in the group of Heisenberg H3. Using applications harmonics is possible obtain a formula for gene
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/08/2008
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17. Construções geométricas: uma alternativa para desenvolver conhecimentos acerca da demonstração em uma formação continuada
The purpose of this study is to analyze a sequence of activities carried out with in service teachers, aiming the construction of the definition of line bisector of a segment and, from this definition, to allow them to demonstrate inherent properties of this mathematical object. Moreover, the study also aimed that the teachers were able to justify it mathema
Publicado em: 2008
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18. A organização da prática educativa em geometria: Contribuições da teoria piagetiana
This research sought to establish inter-relations between the results of the studies of the Piaget and Inhelder to the perception and representation of space and the process of teaching of geometry; identify as children establish the spatial relationships of topological nature, and projective Euclidian and highlight the contributions of those studies. Theref
Publicado em: 2008
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19. A representação do espaço nos anos iniciais do ensino fundamental
The research has like an object the representation of the space on recommendations of National Curriculum Parameters - Parâmetros Curriculares Nacionais (PCN), on review and on Guidelines of Didactic Books of PNLD/2007 and in Didactic Books in the early years of Fundamental Teaching. The representation is being understood in the context of this work, like a
Publicado em: 2008
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20. EsboÃo do grÃfico de funÃÃo : um estudo semiÃtico
This study aims to investigate students use of different representations while doing function activities, after undertaking a methodological teaching approach based on function graph sketch, in which the geometric perspective is the starting point. The research was theoretically based on the Semiotic Theory of Representation Register of Raymond Duval. In t
Publicado em: 2008
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21. MODELAGEM E SIMULAÇÃO DA DINÂMICA DE BÓIAS DE SUPERFÍCIE ANCORADAS / MODELING AND SIMULATION OF THE DYNAMIC OF SURFACE MOORED BUOYS
In this work a method for two-dimensional dynamic analysis of a cylindrical buoy under surfaced waves and moored to the seafloor by a flexible riser is presented. The finite element model used to describe the dynamics of the maritime line was developed by Lustosa (2002). This is a two node beam element based on the Euler-Bernoulli theory, with the element ki
Publicado em: 2008
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22. Reta graduada: um registro de representação dos números racionais
O presente trabalho tem por foco a introdução do conceito de número racional no Ensino Fundamental. Trata-se de um estudo sobre uma abordagem semiótica de ensino, fundamentada na teoria dos registros de representação de Raymond Duval (1993, 1995, 2005), apresentada num artigo dos pesquisadores franceses Adjiage e Pluvinage (2000). Nela é proposto que
Publicado em: 2008
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23. DYNAMIC BEHAVIOR OF BURIED PIPES: METHODOLOGY AND COMPUTATIONAL IMPLEMENTATION / COMPORTAMENTO DINÂMICO DE DUTOS ENTERRADOS: METODOLOGIA E IMPLEMENTAÇÃO COMPUTACIONAL
This work presents a numerical methodology for the analysis of buried pipes employed by the transport of oil and gas subject to dynamic loads. Emphasis is given to seismic loads. A finite element model based on a special class of beam element for the pipe representation is employed. Both geometric and material nonlinearities are considered in a total Lagrang
Publicado em: 2008
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24. Composição e decomposição de figuras geométricas planas por alunos do ensino médio
The purpose of this research is to study the calculation of the figure area by the composition and decomposition of plain geometric figures, by students of the third grade of a public High School in the city of Jacupiranga. To do that, it is presented to the students a diagnostic test made up of two activities, with the objective of checking if they has the
Publicado em: 2007