Geometric Transformations
Mostrando 13-24 de 29 artigos, teses e dissertações.
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13. MOMENTUM BUILDING STRUCTURE AND INTRA-URBAN: CASE STUDY OF HORIZONTAL CLOSED BUSINESSES IN SOUTH SECTOR Uberlândia (MG) / DINÂMICA IMOBILIÁRIA E ESTRUTURAÇÃO INTRA-URBANA: ESTUDO DE CASO DOS CONDOMÍNIOS HORIZONTAIS FECHADOS NO SETOR SUL DE UBERLÂNDIA (MG)
This work aim to comprehend the role played by the housing market in the urban dynamic structure of Uberlândia. For it we analyse the transformations provocade by the closed allotted land in the Uberlândia urban space, associated to the market within the period of 2000-2005. Due to the importance that the housing market sector have in the expansition proce
Publicado em: 2008
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14. Solving tangency problems by inversions and engineering applications. / Resolução de problemas de tangências por inversões e aplicações à engenharia.
A new method to solve the tenth case of Appolonius problem is presented in this study. This method is based on the geometric transformation called inversion and the concept of coaxal circumferences. Besides allowing the resolution of all configurations of the problem, it can also be used to solve other problems. We indicate the importance of the subject abou
Publicado em: 2007
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15. Local and global symmetries in gauge theories / Simetrias globais e locais em teorias de calibre
This thesis deals with the geometric formulation of classical gauge theories, or Yang-Mills theories, regarded as an important class of models that must be included in any attempt to establish a general mathematical framework for classical field theory. Such a formulation must come in (at least) two variants: the hamiltonian version which has gone through a
Publicado em: 2007
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16. Arithmetic fuchsian groups identified in quaternion orders for the construction of signal constellations / Grupos fuchsianos aritmeticos identificados em ordens dos quaternios para construção de constelações de sinais
Within the context of digital communications system in homogeneous space in particular, in hyperbolic spaces, it is necessary to establish systematic procedure for the construction of lattices O ; as the basic entity for construction of eometrically uniforms signal constellations. By this procedure we identify the algebraic and geometric structures to constr
Publicado em: 2007
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17. O conceito de independência e dependência linear e os registros de representação semiótica nos livros didáticos de Álgebra Linear
This research aims to investigate which semiotic representation registers are most used in Linear Algebra textbooks in the presentation and study of the topic linear independence. The mathematics textbook is a resource much used by the teachers in its work. They present many representation registers, which can to be analyzed qualitatively to assess their pot
Publicado em: 2006
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18. Concepção de uma seqüência de ensino para o estudo da semelhança: do empírico ao dedutivo
The aim of this research is to investigate how the concept of similar figures can be presented in a significant and motivate way to the students attending the first grade of Brazilian high school system, so that the proof can be an integrant part of this process. We tried to answer the research questions: How is the transition from concrete geometry to space
Publicado em: 2006
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19. Synthesization of thermally induced errors in coordinate measuring machines
This work presents the equations for the components of the volumetric error of a Coordinate Measuring Machine (CMM) considering thermal influences. These equations were applied to a moving bridge CMM and combines homogeneous transformations, regression techniques and least squares algorithm. The magnitudes of both the geometric errors and its thermally induc
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2005-06
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20. Expansionbydilationanderosionwithaviewtoskeletonandcontourextractionindigitalimages / Expansão por dilatação e por erosão visando a extração de esqueletos e contornos em imagens digitais
The motivation of this work comes from the observation of some discrete plane limitations, especially those related with the skeleton and contour extraction. The objective is to overcome these limitations. The methodology consists of using domain transformations. The main contribution is the introduction of an expansion for labeled images and the study of it
Publicado em: 2005
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21. Avaliação em educação matemática a distância: uma experiência de geometria no ensino médio
Esta dissertação insere-se na temática relativa à avaliação em Educação a Distância (EaD). Nesse contexto, o estudo pretende discutir a viabilidade da implementação de processos avaliativos em ambientes virtuais, suportado por ferramentas de comunicação interativas. Em particular, buscamos responder a seguinte questão: ao se disponibilizar um c
Publicado em: 2004
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22. Uma análise Vygotskiana da apropriação do conceito da simetria por aprendizes sem acuidade visual
The aim of this study was to investigate the processes by which blind learners appropriate mathematical concepts. In the domain of geometry, symmetry and reflection were chosen because of their strong associations with visual experiences. Within a vygotskian perspective, the research was guided by the hypothesis that, given instruments that can act as substi
Publicado em: 2004
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23. Produção de forragem e transformações do nitrogênio do fertilizante em pastagem irrigada de capim Tanzânia. / Herbage production and transformations of the fertilizer nitrogen in irrigated tanzania grass.
Whilst grazing management is a key component in pastoral systems little effort has been made to determine the adequate grazing intensity for tropical pastures, especially under irrigated conditions. The economical attractiveness of irrigated pasture systems depends on high pasture productivity, meaning that fertilizer nitrogen (N) must be used. However, to m
Publicado em: 2003
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24. COMPUTATIONAL METHODS FOR GEOLOGICAL SECTIONS RESTAURATION. / PROCEDIMENTOS COMPUTACIONAIS PARA O BALANCEAMENTO DE SEÇÕES GEOLÓGICAS
This work presents a new approach for the restoration of geological cross-sections that is based on physical modeling and numerical simulation. The main purpose is to introduce Continuum Mechanics concepts into the geological restoration process in order to consider physical properties of the materials during the simulation of the movement of a rock block al
Publicado em: 2002