Distributed File System
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. The efficacy of the self-adjusting file and ProTaper for removal of calcium hydroxide from root canals
OBJECTIVE: The goal of this study was to evaluate the efficacy of the Self-Adjusting File (SAF) and ProTaper for removing calcium hydroxide [Ca(OH)2] from root canals. MATERIAL AND METHODS: Thirty-six human mandibular incisors were instrumented with the ProTaper system up to instrument F2 and filled with a Ca(OH)2-based dressing. After 7 days, specimens
J. Appl. Oral Sci.. Publicado em: 2013-07
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2. Optimization input output operations aiming at reduce execution time of distributed applications which handle large amount of data / Otimização de operações de entrada e saída visando reduzir o tempo de resposta de aplicações distribuídas que manipulam grandes volumes de dados
Aplicações científicas atuais têm produzido volumes de dados cada vez maiores. O processamento, a manipulação e a análise desses dados requerem infraestruturas computacionais de larga escala tais como aglomerados e grades de computadores. Nesse contexto, várias pesquisas visam o aumento de desempenho dessas aplicações por meio da otimização de ac
Publicado em: 2010
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3. IPTV architecture with time-shift support based on peer-to-peer distribution. / Arquitetura de IPTV com suporte à apresentação deslocada no tempo baseada em distribuição peer-to-peer.
Telecommunication companies are suffering from the increasing offer of cheap and reliable voice over IP services, being forced to diversify their services looking for new revenue possibilities. Since these companies have a vast infrastructure, they are now providing TV services through the same telephony and data infrastructure, using their IP networks to of
Publicado em: 2009
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4. Modelo de servidor web com quatro módulos de atendimento de requisições (SWMAR) / Web server model with four request attending modules (SWMAR)
This work presents the implementation and validation of a web server model that divides the web server functions into four modules and each one of these is responsible for an execution step, in which a request goes through during processing. These modules are: request serving (module 1); file transferring to the main memory (module 2); dynamic request proces
Publicado em: 2008
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5. Dinamismo de servidores de dados no sistema de arquivos dNFSp / Data Servers Dynamism in the dNFSp File System
Um dos maiores desafios no desenvolvimento de sistemas de alto desempenho é a questão da transferência e armazenamento de grandes quantidades de dados dentro do sistema. Diferentes abordagens tentam solucionar este problema. Entre elas, tem-se os sistemas de arquivos voltados para cluster, como PVFS, Lustre e NFSp. Eles distribuem as funções de armazena
Publicado em: 2007
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6. GRIDFS: SERVER FOR GRIDS AND HETEROGENEOUS DISTRIBUTED ENVIRONMENTS / GRIDFS: UM SERVIDOR DE ARQUIVOS PARA GRADES E AMBIENTES DISTRIBUÍDOS HETEROGÊNEOS
Grid computing allows the use of distributed networks resources for tasks requiring a high processing power. A Grid infra-structure may help in the execution of these tasks and is able to coordinate their related activities, possibly regarding the provision of data files for the tasks executing in the grid nodes. GridFS is a system that enables data sharing
Publicado em: 2006
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7. Uma Abordagem, baseada em framework e na técnica de descrição formal Estelle, para o desenvolvimento de sistemas de arquivos paralelos distribuídos. / An approach, based on framework and the formal description technique Estelle, for the development of distributed parallel file systems.
The constant increase of processing speed, mainly due to the use of a large number of processors, has allowed an improvement in the design and building of parallel computation systems. However, the performance of several types of applications is affected by the latency originated from Input/Output operations on data. In order to solve this problem parallel f
Publicado em: 2006
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8. PRODUÇÃO DE JUNDIÁ (Rhamdia quelen) ALIMENTADOS COM DIETAS CONTENDO ÓLEOS DE ARROZ, CANOLA OU SOJA / PRODUCTION OF JUNDIÁ (Rhamdia quelen) FED WITH DIETS CONTAINING RICE, CANOLA OR SOY OIL
This work had for objectives to evaluate the influence of vegetable oils in the corporal development of jundiá (Rhamdia quelen, Heptapteridae) and its relationship with the quality of the fish. Six diets were tested with 32% of crude protein and rice, canola or soy oil at 5 or 10% inclusion, for 90 days. Fish (180, initial weigh=710,8g) were distributed at
Publicado em: 2006
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9. Parallel File Systems: alternatives to reduce the bottleneck in accessing the file system / Sistemas de arquivos paralelos: alternativas para a redução do gargalo no acesso ao sistema de arquivos
Nos últimos anos, a evolução dos processadores e redes para computadores de baixo custo foi muito maior se comparada com o aumento do desempenho dos discos de armazenamento de dados. Com isso, muitas aplicações estão encontrando dificuldades em atingir o pleno uso dos processadores, pois estes têm de esperar até que os dados cheguem para serem utiliz
Publicado em: 2005
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10. Plan B: boxes for networked resources
Nowadays computing environments are made of heterogeneous networked resources, but unlike environments used a decade ago, the current environments are highly dynamic. During a computing session, new resources are likely to appear and some are likely to go offline or to move to some other place. The operating system is supposed to hide most of the complexity
Journal of the Brazilian Computer Society. Publicado em: 2004-07
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11. Um mecanismo integrado de cache e prefetching para sistemas de entrada e saída de alto desempenho.
An integrated caching and prefetching mechanism for a parallel network file system has the potential to improve both the speed and performance of I/O operations. Different cache policies and algorithms can be used in the system. Different prefetching mechanisms can also be used in the system. The performance of the I/O operations can also be influenced by ot
Publicado em: 2004
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12. Escalonamento de instruções em arquiteturas VLIW particionadas explorando Bypassing de operandos
The untiring search for faster machines, alIied to the great technological advances in the field of integrated circuits conception, brought out the Very Long Instruction Word architectures from an amorphous status to reality. Although they have appeared recently as real chips [1], the VLIW machines were idealized some decades ago [13, 16, 22, 23]. The microp
Publicado em: 2001