Local Refinement
Mostrando 1-12 de 39 artigos, teses e dissertações.
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1. GPU Finite Element Method Computation Strategy Without Mesh Coloring
Abstract A GPU-adapted Finite Element Method (A-FEM) implementation without using a mesh coloring strategy to avoid race conditions is presented. All the elements are simultaneously processed, and the local data is computed and consolidated into the device memory in a new adapted Coordinate Format data structure (a-COO). The comparison between the proposed s
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2020-06
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2. Finite Element Modeling and Experimental Verification of Nitriding Process in S30C Steel
A mathematical model has been developed to simulate the nitriding process of plain carbon steel, considering the simultaneous diffusion of nitrogen in different iron-nitrogen (Fe-N) phases and the precipitation dynamics of γ' and ε iron-nitride. The model can predict the distribution of nitrogen concentration, volume fraction of Fe-N phases and hardness. F
Mat. Res.. Publicado em: 16/02/2017
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3. Refinamento citogenético em indivíduos com anomalias craniofaciais sindômicas sem diagnóstico definido / Cytogenetic refinement in individuals with syndromic craniofacial anomalies with unkown diagnoses
Objetivos: Investigar possíveis alterações citogenéticas, através da técnica de bandamento de alta resolução, em indivíduos com anomalias craniofaciais associadas ao atraso no desenvolvimento neuropsicomotor e sem diagnóstico clínico-genético definido, com cariótipo (com bandas) prévio normal e estabelecer possível correlação entre o fenóti
Publicado em: 2010
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4. AnÃlise de comunidades microbianas de solo de manguezal por T-RFLP e microarranjos de DNA / AnÃlise de comunidades microbianas de solo de manguezal por T-RFLP e microarranjos de DNA
The mangroves are essistemas important and productive, found along the coastline of tropical and subtropical regions. Important processes such as nutrient cycling, are directly connected to the activity of soil microbial communities. Given its strategic position the mangroves are very impacted the world. In Brazil, important areas such as the Bay of All Sain
Publicado em: 2008
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5. Modelagem de injeção de agua acima da pressão de fratura do reservatorio atraves de poço horizontal virtual / Modeling water injection above reservoir formation parting pressure through a virtual horizontal well
Water injection has been the most used method to improve oil recovery. The main problem of this method, related directly with operational efficiency, is the injectivity loss which is the loss of capacity to maintain water injection rates due to formation damage. Different models have been proposed to minimize the injectivity loss effects due to its high econ
Publicado em: 2007
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6. Um framework para coordenação do tratamento de exceções em sistemas tolerantes a falhas / A framework for exception handling coordination in fault-tolerant systems
The widespread scale adoption of computer networks and database management systems has contributed to the arising of complex information systems. Nowadays, these systems have become essential aspects in the everyday life, supporting business processes and indispensable enterprise services to society such as banking automation and telephony. The usage of comp
Publicado em: 2007
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7. Estudo das propriedades estruturais locais de fluidos magnéticos : da nanopartícula à dispersão
Local structural properties of magnetic fluids based on nanosized particles of zinc, copper or nickel ferrite are investigated. Nanograins prepared by a soft chemistry method are dispersed in acidic medium thanks to a core-shell strategy that prevents the particles from dissolution. Their chemical composition is no longer homogeneous and they can be describe
Publicado em: 2007
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8. Detailed Two-Dimensional Numerical Analysis of Multiphase Flows / Análise numérica detalhada de escoamentos multifásicos bidimensionais
The mathematical modeling of multiphase flows involves the interaction between deformable and moving geometries with the fluid in which they are dispersed (immersed). This kind of interaction is present in many practical applications. A common approach to handle these problems is the so called Front-Tracking/Front-Capturing Hybrid Methods. This methodology c
Publicado em: 2007
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9. Detailed Two-Dimensional Numerical Analysis of Multiphase Flows / AnÃlise numÃrica detalhada de escoamentos multifÃsicos bidimensionais
The mathematical modeling of multiphase ows involves the interaction between deformable and moving geometries with the uid in which they are dispersed (immersed). This kind of interaction is present in many practical applications. A common approach to handle these problems is the so called Front-Tracking/Front-Capturing Hybrid Methods. This methodology consi
Publicado em: 2007
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10. Modelo computacional paralelo para a hidrodinâmica e para o transporte de substâncias bidimensional e tridimensional / Parallel computational model for hydrodynamics and for the scalar two-dimensional and three-dimensional transport of substances
Neste trabalho desenvolveu-se e implementou-se um modelo computacional paralelo multifísica para a simulação do transporte de substâncias e do escoamento hidrodinâmico, bidimensional (2D) e tridimensional (3D), em corpos de água. Sua motivação está centrada no fato de que as margens e zonas costeiras de rios, lagos, estuários, mares e oceanos são
Publicado em: 2007
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11. In silico characterization of microsatellites in Eucalyptus spp.: abundance, length variation and transposon associations
This study assessed the abundance of microsatellites, or simple sequence repeats (SSR), in 19 Eucalyptus EST libraries from FORESTs, containing cDNA sequences from five species: E. grandis, E. globulus, E. saligna, E. urophylla and E. camaldulensis. Overall, a total of 11,534 SSRs and 8,447 SSR-containing sequences (25.5% of total ESTs) were identified, with
Genetics and Molecular Biology. Publicado em: 2005
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12. Optimization methods for the definition of MLP neural network architectures and weights / Optimization methods for the definition of MLP neural network architectures and weights / MÃtodos de otimizaÃÃo para definiÃÃo de arquiteturas e pesos de redes neurais MLP / MÃtodos de otimizaÃÃo para definiÃÃo de arquiteturas e pesos de redes neurais MLP
This dissertation proposes modifications in the Yamazaki method for the simultaneous optimization of Multilayer Perceptron (MLP) network weights and architectures. The main objective is to propose a set of modifications with respective validations aimed at creating a more efficient optimization process. The optimization hybrid algorithm is based on the simul
Publicado em: 2005