Heterogeneous Distributed System
Mostrando 1-12 de 36 artigos, teses e dissertações.
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1. Indexing and querying dataspaces
Over theWeb, distributed and heterogeneous sources with structured and related content form rich repositories of information commonly referred to as dataspaces. To provide access to this heterogeneous data, information integration systems have traditionally relied on the availability of a mediated schema, along with mappings between this schema and the schem
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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2. Uma arquitetura de controle de qualidade de serviço aplicada a redes heterogêneas e serviços convergentes. / An architecture for QoS control applied to heterogeneous networks and convergent services.
One of the targets of the next generation communication systems is to provide access to any service, to any user, anytime, anywhere, regardless the access network technology or type of user device (mobile phone, PDA, personal computer, and so on). This scenario is called convergence of services by heterogeneous networks, and in such scenario quality of servi
Publicado em: 2010
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3. Grades computacionais baseadas em modelos economicos / Grid computing based on economic models
Grid computing is a paradigm that allows the sharing of heterogeneous resources, geographically distributed and under independent administration. Sharing must be done to optimize the use of resources and meet quality of service requirements. Economic models can be applied to provide a fair allocation of these resources and to promote the entry of a greater n
Publicado em: 2010
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4. Convergence time to the Nash equilibrium in packing and load balancing games / Tempo de convergencia para o equilibrio de Nash nos jogos empacotamento de itens e balanceamento de carga
In this thesis, we study game-theorical versions of the bin packing and load balancing problems. We consider that the implementation of a centralized controller algorithm is not feasible, making the entities that participate in the system act in a selfish way. Thus, the selfish choice of the strategies by the entities may or may not lead to a stable state of
Publicado em: 2010
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5. O sistema operacional de rede heterogêneo HetNOS / The HetNOS heterogeneous network operating system
O advento dos computadores pessoais e posteriormente das estações de trabalho, somado ao desenvolvimento de hardware de comunicação eficiente e de baixo custo, levou a popularização das redes locais. Entretanto, o software não presenciou o mesmo desenvolvimento do hardware, especialmente devido a complexidade dos sistemas distribuídos. A heterogeneid
Publicado em: 2010
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6. Yali : uma extensão do modelo linda para programação paralela em redes heterogêneas / Yali, an extension to the linda model intended for parallel programming in heterogeneous computer networks
Com a disponibilidade de redes que ligam estações cada vez mais poderosas a baixos custos, o interesse em torno de ferramentas que suportam a programação paralela em arquiteturas deste tipo tem aumentado significativamente. Esta dissertação trata do projeto e implementação de YALI (Yet Another Linda Implementation), uma ferramenta destinada ao desenv
Publicado em: 2010
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7. Melanin-concentrating hormone and orexin A neuropeptidergic systems in the dorsal motor nucleus of the vagus nerve in rat / Sistema neuropeptidergico do hormonio concentrador de melanina e da orexina A no nucleo motor dorsal do nervo vago em rato
Melanin-concentrating hormone (MCH) and orexin-A (OXA) are neuromediators expressed in neurons distributed in the diencephalum, mainly in the lateral hypothalamic area, projecting nerve fibers to several parts of the central nervous system. These neuropeptides exert potent orexigenic activity, increasing feeding and controlling the energetic balance. Consequ
Publicado em: 2009
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8. Ontology-based clustering in a Peer Data Management System
Peer Data Management Systems (PDMS) are advanced P2P applications which enable users to transparently query several distributed, heterogeneous, and autonomous data sources. Each peer represents a data source and exports its entire data schema or only a portion of it. Such schema, named exported schema, represents the data to be shared with the other peers of
Publicado em: 2009
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9. Lidando com recursos escassos e heterogêneos em um sistema geograficamente distribuído atuando como servidor de MMOG / Dealing with scarce and heterogeneous resources in a geographically distributed MMOG server system
Tradicionalmente, utiliza-se um servidor central para prover suporte a MMOGs (massively multiplayer online games, ou jogos online maciçamente multijogador), nos quais o número de participantes é da ordem de dezenas de milhares. Muitos trabalhos foram realizados com o intuito de criar um modelo de suporte completamente descentralizado, par-a-par, para este
Publicado em: 2009
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10. Memory-intensive scheduling policies for distributed applications / Políticas de escalonamento memory-intensive para aplicações distribuídas
This dissertation approaches the process scheduling on clusters of computers, on both homogeneous and heterogeneous platforms. The heterogeneities considered include processor computational power, system main memory quantity and the average disk access time. In this work are proposed four novel policies aimed at realizing the work load sharing on these envir
Publicado em: 2008
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11. CES: Um Mecanismo Genérico de Composição de Eventos para Sistemas Sensíveis ao Contexto
Pervasive applications use context provision middleware support as infrastructures to provide context information. Typically, those applications use communication publish/subscribe to eliminate the direct coupling between components and to allow the selective information dissemination based in the interests of the communicating elements. The use of composite
Publicado em: 2008
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12. Preparo, caracterização e aplicação de compósitos Fe(0)-óxidos de ferro em processos redutivos para remediação ambiental.
The reduction of Cr(VI) in aqueous medium with Fe(0)/Fe3O4 composites was investigated in bench procedures scale, particularly focusing on the efficiency of its fundamental chemical processes. The obtained results reveal that the combination of manually ground Fe(0) and Fe3O4 renders a very active system on reducing Cr(VI). The chemical characterization of t
Publicado em: 2008