Parallel Algorithms
Mostrando 13-24 de 105 artigos, teses e dissertações.
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13. Avaliação biomecânica da mandibulotomia / Biomechanical Evaluation of the Mandibulotomy Technique
Currently, cancer is still the cause of high death rates worldwide. Therefore, researchers are engaged in prevention and early diagnosis of this malignant disease that affects millions of people. Specifically in Brazil, it is recognized as a public health problem. Despide all efforts, the incidence of oral cancer in particular, is most often diagnosed in adv
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/04/2011
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14. Parallel evolutionary algorithm to the sonet/sdh ring assigment problem / Algoritmo evolutivo paralelo para o problema de atribuição de localidades a anéis em redes sonet/sdh
The telecommunications play a fundamental role in the contemporary society, having as one of its main roles to give people the possibility to connect them and integrate them into society in which they operate and, therewith, accelerate development through knowledge. But as new technologies are introduced on the market, increases the demand for new products a
Publicado em: 2010
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15. ALGORITMOS PARALELOS PARA MOTORES DE JOGOS EM MULTIPROCESSADORES / PARALLEL ALGORITHMS FOR MULTICORE GAME ENGINES
This thesis presents several techniques about parallel technology on electronic games. The thesis begins presenting several possible architectures for a game engine. A new architecture is presented, more flexible and adequate for the processors of the future that will have a higher level of parallelism. Following, a new technique for processing an octree, a
Publicado em: 2010
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16. Enhance the Van der Waals energy efficiency calculi in genetic algorithms for protein structure prediction / Aumento da eficiência do cálculo da energia de van der Waals em algoritmos genéticos para predição de estruturas de proteínas
Proteins are molecules present in the living organism and essential for their life. To understand the function of a protein, its threedimensional structure (the correct positions of all its atoms in the space) should be known. From the structure of a vital protein of an organism that causes a human disease, it is possible to develop medicines for treatment o
Publicado em: 2010
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17. Algoritmos paralelos para alocação e gerência de processadores em máquinas multiprocessadoras hipercúbicas / Parallel algorithms for processor allocation in hypercubes
Nos últimos anos, máquinas maciçamente paralelas, compostas de centenas de processadores, vem sendo estudadas como uma alternativa para a construção de supercomputadores. Neste novo conceito de processamento de dados, grandes velocidades são alcançadas através da cooperação entre os diversos elementos processadores na resolução de um problema. Gr
Publicado em: 2010
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18. Estratégias de computação seqüenciais e paralelas sobre espaços coerentes / Sequential and parallel computational strategies of coherence spaces
As estruturas de dados concretas (cds) são quaternas (C, V, E, l-) que contêm um conjunto C de células, um conjunto V de valores, um conjunto E de eventos e uma relação de habilitação l-. O conjunto de estados de uma cds é um domínio concreto que pode ser considerada a parte "abstrata" das cds. Da mesma maneira tem-se que os domínios de eventos (qu
Publicado em: 2010
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19. ROBUST VARIABLE STRUCTURE MODEL REFERENCE ADAPTIVE CONTROL APPLIED TO ACTIVE POWER FILTERS / CONTROLE ADAPTATIVO ROBUSTO DE ESTRUTURA VARIÁVEL POR MODELO DE REFERÊNCIA APLICADO A FILTROS ATIVOS DE POTÊNCIA
This works presents a Robust Variable Structure Model Reference Adaptive Control scheme denoted VSRMRAC. In this adaptive control strategy, each parameter of the control law is obtained by the sum of two other adaptive terms. One of them is associated with the RMRAC algorithm, while the other is composed of an adaptive gain rated by an approximated sign func
Publicado em: 2010
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20. Árvores de Steiner: Teoria, Geração Numérica e Aplicações / Steiner trees: Theory, Numerical Generation and Applications
Given a set of points in the plane, which we call terminals, one proves that they are always connected by a minimal graph called Steiner tree. The terminals may represent main connection route points, circuit elements or network computer servers. That is, the problem is to optimize traffic among the terminals whenever this is represented by a tree of shortes
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/12/2009
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21. A standards-based framework to foster geospatial data and process interoperability
The quest for interoperability is one of the main driving forces behind international organizations such as OGC and W3C. In parallel, a trend in systems design and development is to break down GIS functionalities into modules that can be composed in an ad hoc manner. This component-driven approach increases flexibility and extensibility. For scientists whose
Journal of the Brazilian Computer Society. Publicado em: 2009-03
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22. Implementação e análise de algoritmos BSP/CGM em um Beowulf e no InteGrade
As the science and technology advanced in all diverse areas, problems which require more and more computer power to be solved were risen. In the beginning, these problems were solved by high performance parallel computers which were huge and very expensive. After that, though, making clusters with PCs which worked together to offer a higher processing capaci
Publicado em: 2009
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23. Windowing queries: algorithms and data structures. / Consultas de segmentos em janelas: algoritmos e estruturas de dados
In this work we study problems about point and segment query in rectangular windows whose edges are parallel to the axis. Given a set of segments (or points) in the plane. In a first phase these segments are organized in data structures such that queries for segments in windows are done more efficiently. In the second phase windows are given online. The data
Publicado em: 2009
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24. Combinação afim de algoritmos adaptativos. / Affine combination of adaptive algorithms.
In order to improve the performance of adaptive filters, the combination of algorithms is receiving much attention in the literature. This method combines linearly the outputs of two filters operating in parallel with different step-sizes to obtain an adaptive filter with fast convergence and reduced excess mean squared error (EMSE). In this context, it was
Publicado em: 2009