Grid Computation
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. Contact phenomena modeling in biological structures on the example of the implant-bone
Abstract The work presents modeling of interface phenomena in biological structures. Selected ways of numerical modeling of phenomena at the boundary of two materials by means of FEM methods are discussed. The work focuses on phenomena related to biological structures and their mutual interactions. Using an example of an implant-bone system, various techniqu
Lat. Am. j. solids struct.. Publicado em: 14/03/2019
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2. Simulation of the Microstructural Evolution of Pure Material and Alloys in an Undercooled Melts via Phase-field Method and Adaptive Computational Domain
The phase-field methods were developed mainly for studying solidification of pure materials, being then extended to the solidification of alloys. In spite of phase-field models being suitable for simulating solidification processes, they suffer from low computational efficiency. In this study, we present a numerical technique for the improvement of computati
Mat. Res.. Publicado em: 2015-06
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3. Wavelength assignment using a hybrid evolutionary computation to reduce cross-phase modulation
In this paper, we propose a hybrid methodology based on Graph-Coloring and Genetic Algorithm (GA) to solve the Wavelength Assignment (WA) problem in optical networks, impaired by physical layer effects. Our proposal was developed for a static scenario where the physical topology and traffic matrix are known a priori. First, we used fixed shortest-path routin
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2014-06
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4. Numerical simulation of the solidification of pure melt by a phase-field model using an adaptive computation domain
In this paper, we present a phase-field model with a grid based on the Finite-Difference Method, for improvement of computational efficiency and reducing the memory size requirement. The numerical technique, which is based on the temperature change of the pure material, enables us to use, in the initial steps of the computation, a very small computational do
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2011-06
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5. DEVELOPMENT OF A MODULE TO EXPLORE GPGPU CAPABLE COMPUTERS IN A GRID COMPUTING / UM COMPONENTE PARA EXPLORAÇÃO DA CAPACIDADE DE PROCESSAMENTO DE GPUS EM GRADES COMPUTACIONAIS
Grades de computadores surgiram na década de 90 com o objetivo de utilizar computadores geograficamente dispersos para computação de alto desempenho. Através destas grades, pode-se chegar ao poder computacional de um supercomputador de uma forma simples, eficiente e barata. Tais benefícios fizeram com que pesquisas em grades de computadores obtivessem d
Publicado em: 2010
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6. Análise,Simulações e Aplicações Algorítmicas de Caminhadas Quânticas / Analysis,Simulations and Algorithmic Applications of Quantum Walks
Quantum computing is a model of computation based on the laws of quantum mechanics, which can be used to develop faster algorithms. The development of efficient quantum algorithms, however, is a highly challenging task. A recent successful approach is the use of quantum walks. In this work, we have studied the quantum walk on the hypercube, obtaining the exa
Publicado em: 2010
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7. Acesso Móvel aos Serviços do Middleware InteGrade / Mobile Access Services Middleware InteGrade
Mobile computing technologies and wireless networks have evolved very quickly. Nowadays, many of the portable devices have significant processing power, storage and communication capacity. At the same time, grid computing technology became an important tool for collaborative work among users and organizations enabling the sharing of computing resources and s
Publicado em: 2009
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8. Implementação de um mecanismo de recuperação por retorno para a ferramenta ourgrid / Implementation of a rollback recovery mechanism for ourGrid toolkit
A computação em grid (ou computação em grade) emergiu como uma área de pesquisa importante por permitir o compartilhamento de recursos computacionais geograficamente distribuídos entre vários usuários. Contudo, a heterogeneidade e a dinâmica do comportamento dos recursos em ambientes de grid tornam complexos o desenvolvimento e a execução de aplic
Publicado em: 2008
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9. A descentralized P2P middleware for workflow computing / Um middleware Peer-to-Peer descentralizado para a computação de workflows
P2P Computing has been raised as an alternative and complementary solution to Grid Computing. The use of P2P technology is able to provide a flexible and decentralized execution and management of Grid workflows. In this work we present a completely decentralized P2P middleware for workflow computing. The middleware collects the shared processing power of the
Publicado em: 2008
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10. 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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11. Simulations of incompressible fluid flows by a least squares finite element method
In this work simulations of incompressible fluid flows have been done by a Least Squares Finite Element Method (LSFEM) using velocity-pressure-vorticity and velocity-pressure-stress formulations, named u-p-omega and u-p-tau formulations respectively. These formulations are preferred because the resulting equations are partial differential equations of first
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2005-09
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12. InteGrade: Um Sistema de Middleware para Computação em Grade Oportunista / InteGrade: A Middleware System for Opportunistic Grid Computing
The past years witnessed a substantial increase in the need for computing power in various fields of human activity, including many industrial and academic endeavors. Grid Computing addresses those needs, providing seamless access to distributed computing resources, allowing one to use the combined computing power of various machines. However, the majority o
Publicado em: 2004