Compact Support
Mostrando 13-24 de 56 artigos, teses e dissertações.
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13. Estudo da transformada rápida wavelet e sua conexão com banco de filtros
In this work we presented an exhibition of the mathematical theory of orthogonal compact support wavelets in the context of multiresoluction analysis. These are particularly attractive wavelets because they lead to a stable and very efficient algorithm, that is Fast Transform Wavelet (FWT). One of our objectives is to develop efficient algorithms for calcula
Publicado em: 2008
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14. A middleware for service orchestration in computacional grids / GPO : um middleware para orquestração de serviços em grades computacionais
In the collaborative environment of the Computational Grids, there are few tools used for process management and user guide services. This work presents the Grid Process Orchestration (GPO), an infrastructure for service and process orchestration in computational grids, which allows to create and manage complex workflows composed of strongcoupled jobs with n
Publicado em: 2007
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15. Wavelets monocÃclicas de suporte compacto construÃdas a partir de distribuiÃÃes beta / Compactly supported one-cyclic wavelets derived from beta distributions
Esta dissertaÃÃo se propÃe a investigar a representaÃÃo de sinais no plano "tempo-freqÃÃncia" e, mais especificamente, os problemas relativos à resoluÃÃo de sinais. O princÃpio da incerteza de Gabor-Heisenberg para sinais e wavelets à analisado criteriosamente. VersÃes de Gnedenko-Kolmogorov do tipo "Teorema Central do Limite" sÃo avaliadas, pr
Publicado em: 2007
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16. Informação, velocidade da luz e pontos não analíticos / Information, light velocity and non-analytical points
O trabalho inicia com uma revisão sobre o conceito de velocidade de grupo e de fase, e uma breve discussão do que ocorre quando um pulso se propaga num meio dispersivo. Em seguida, fazemos um estudo da equação de onda de Helmholtz, seguido por uma descrição do modelo de Drude-Lorentz para a susceptibilidade elétrica. Durante este estudo exploramos as
Publicado em: 2007
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17. ConstruÃÃo de uma bancada de ensaio para avaliaÃÃo de mecanismos dosadores de sementes / Construction of a workbench of essay for evaluation of mechanisms distributor of seeds
The current work aimed the construction of a benches group for simulating displacement speeds of sowers. The speeds simulator was performed and was carried out in the mechanical trials laboratory located at UTFPR - campus Medianeira, and the assays of systemÂs evaluation were performed at the Agricultural Engineering Experimental Nucleous - AEEN, which belo
Publicado em: 2006
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18. Foliar anatomy of species of Chamaecrista Moench. (Leguminosae/Caesalpinioideae) occurring in rupestrial fields / Anatomia foliar de espécies de Chamaecrista Moench. (Leguminosae/Caesalpinioideae) ocorrentes em campo rupestre
Minas Gerais state flora presents different biomas but little is known about the diversity of its species, some of which secrete natural compounds having well-known biological activity. There is a large number of species of recognized economic interest in the Leguminosae family and in the rupestrial fields of Minas Gerais, totaling 28 of the 351 species incl
Publicado em: 2006
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19. "Análise comparativa, pelo método dos elementos finitos bidimensional, das tensões geradas nas estruturas de suporte de prótese parcial removível de extremidade livre inferior, em rebordo horizontal e descendente-ascendente" / A two-dimensional finite element analysis of the stress distribution in the supporting structures of a distal extension base removable partial denture over a horizontal and descending/ascending residual ridge.
This study is a two-dimensional finite element analysis (FEA) of the stress distributionin the supporting structures compact and cancellous bone; periodontal ligament and oral mucosa for a distal extension base removable partial denture (RPD) modeled on mandibular dental archs with two residual ridge forms: horizontal and descending-ascending. The two
Publicado em: 2005
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20. Genese dos depositos auriferos em metaconglomerados da formação moeda, Quadrilatero Ferrifero, MG : o papel do metamorfismo e associação com a materia carbonosa / Genesis of the metaconglomerate-hosted gold deposits of the moeda formation, Quadrilatero Ferrifero (State of Minas Gerais) : role of the metamorphism and the association with carbonaceous matter
The Quadrilátero Ferrífero has historically been one of the most important gold province in Brazil, with a significant number of productive greenstone-hosted lode gold deposits within the Rio das Velhas Supergroup together with those associated with the metasedimentary sequence of the Minas Supergroup. At the base of the Moeda formation, Minas Supergroup,
Publicado em: 2005
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21. Metadata models for ad hoc queries on terabyte-scale scientific simulations
We present our approach to enabling approximate ad hoc queries on terabyte-scale mesh data generated from large scientific simulations through the extension and integration of database, statistical, and data mining techniques. There are several significant barriers to overcome in achieving this objective. First, large-scale simulation data is already at the
Journal of the Brazilian Computer Society. Publicado em: 2002-07
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22. Projeto e fabricação de moldes para prensagem isostática utilizando tecnologias CAD/CAE e prototipagem rápida. / Design and manufacturing of moulds in isostatic pressing using CAD/CAE technology and rapid prototyping.
This work presents a methodology for the design and fabrication of ceramic powder isostatic pressing moulds using CAD and CAE tools and Rapid Prototyping. The isostatic pressing process was simulated using the finite element method. The compaction behavior of ceramic powder is described by the Drucker-Prager/cap constitutive model and the behavior of elastom
Publicado em: 2002
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23. Florística e estrutura do componente epifítico vascular na mata da reserva da Cidade Universitária "Armando de Salles Oliveira", São Paulo, SP. / Floristics and structure of the vascular epiphytic component in the forest of the reserve of the Cidade Universitária "Armando de Salles Oliveira", São Paulo, SP.
This work assesses floristics and structure of epiphytes, here defined as vascular plants usually found living on others, without parasitizing them, during at least a part of their life cycles. The study site, the reserve of the Cidade Universitária "Armando de Salles Oliveira" (nearly 46o43W, 23o33S), in São Paulo-SP (Brazil), is a secondary forested
Publicado em: 1996
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24. Blow-up of solutions of nonlinear wave equations in three space dimensions
Solutions u(x, t) of the inequality □u ≥ A|u|p for x ε R3, t ≥ 0 are considered, where □ is the d'Alembertian, and A,p are constants with A > 0, 1 < p < 1 + √2. It is shown that the support of u is compact and contained in the cone 0 ≤ t ≤ t0 -|x - x0|, if the “initial data” u(x, 0), ut(x, 0) have their support in the ball|x - x0| ≤ t0.