Network Stack
Mostrando 1-12 de 18 artigos, teses e dissertações.
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1. Uma aplicação de redes definidas por software para a gerência de redes de datacenters virtualizados
Cloud-Computing services related to infrastructure have been drawing much attention recently. On this business model, virtualization is an efficient way to ofier flexibility, isolation and several new functionalities. This technology has led to the multi-tenant datacenter model for Cloud-Computing, where the client (tenant) can rent not only a virtual machin
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/07/2012
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2. Análise de desempenho no uso de pré-busca para distribuição de vídeo sobre redes P2P
Peer-to-Peer Video on Demand Systems have well stabilished its importance in recent years. Such consolidation is due to the high gains that may be archieved in terms savings in transmission bandwidth of the servers. In this work, we evaluate how this technology can enhance the gains for the transmission of continuous media over the Internet. To achieve this
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/08/2011
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3. IMPLEMENTAÇÃO DE ARQUITETURAS DE PILHA UDP/IP EM HARDWARE RECONFIGURÁVEL BASEADO NO DESEMPENHO DE VAZÃO, LATÊNCIA E TAXA DE PERDA DE QUADROS / IMPLEMENTATION OF UDP/IP STACK ARCHITECTURES IN RECONFIGURABLE HARDWARE BASED ON THROUGHPUT, LATENCY AND FRAME LOSS RATE PERFORMANCE
This work presents the implementation of three architectures of UDP/IP network stack in reconfigurable hardware. Also, presents the development of a Tester based on the RFC 2544 methodology and implemented it in FPGA. This Tester was used to obtain the throughput, latency and frame loss rate results. The performance of the project shows, in average, throughp
Publicado em: 2010
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4. Validation of consumers in services oriented architecture (SOA): a framework to validate legitimacy of service consumers and their access means. / Atestamento em arquitetura aberta de serviços (SOA): um arcabouço para validação de legitimidade dos consumidores de serviços e seus dispositivos de acesso.
In Service Oriented Architectures (SOA) the concern with security has received important focus on solution design as a consequence of intrinsic vulnerabilities at the basis of this new paradigm. This work proposes a framework to secure development of SOA applications, with a special attention to security matters regarding validation of service consumers and
Publicado em: 2010
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5. UMA PROPOSTA DE ARQUITETURA DE PILHA DE COMUNICAÇÃO EM REDE COM UM NÚMERO REDUZIDO DE CAMADAS / A NOVELL NETWORK STACK ARCHITECTURE WITH REDUCED NUMBER OF LAYERS
Este trabalho apresenta uma proposta arquitetura de pilha de comunicação em rede com número reduzido de camadas. A redução do número de camadas visa fornecer um método de comunicação simples e eficaz para sistemas embarcados permitindo que o microprocessador, onde geralmente a Camada de Aplicação é implementada, execute apenas código de aplicaç
Publicado em: 2009
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6. Projeto integrado para coleta de dados em redes de sensores sem fio
In Wireless Sensor Networks, the nodes have severe energy constraints due to the fact of having a small battery and being located in places of difficult access for humans. Therefore, these networks need protocols that are efficient regarding energy consumption. Unlike the traditional networks that are designed to accommodate a wide variety of applications, W
Publicado em: 2009
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7. Caracterizando distorções em redes ad hoc
Ad hoc networks work under the assumption that the devices composing the network are willing to collaborate with one another. Nevertheless, in a collaborative environment, selfish and misbehaving nodes may have a negative impact on the whole network. Hence, means to characterize and identify such behavior is necessary as its impact may affect the entire netw
Publicado em: 2008
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8. A system for active analysis of firewall behavior. / Um sistema para análise ativa de comportamento de firewall.
Due to the importance of the firewalls for protection of network computers, a lot of studies has been done in order of the improvement of the protection techniques and in the development of new techniques to be used in the analysis of them. With focus in this theme, this thesis considers the viability of the technique of injection of packages and observation
Publicado em: 2006
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9. Um protocolo de roteamento para redes sem fio adaptável por regras de aplicação
The exchange of information among the layers of the communication stack has been frequently used in Wireless Sensor Networks (WSNs) to increase the performance of the network. Such interaction among layers enhances the reliability and eciency of the communication, despite the severely restricted resources found on sensor nodes. However, such optimizations im
Publicado em: 2006
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10. Um estudo do desempenho dos protocolos iSCSI e Fibre Channel
Nowadays, most of the corporations face a growing demand for efficient methods to manipulate information. Applications are becoming more sophisticated with richer content and consequent there is the need for more storage and faster access to information. In the past, storage systems and computer networks were two independent entities, but due to the huge dem
Publicado em: 2004
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11. Tomographic Evidence for Continuous Turnover of Golgi Cisternae in Pichia pastorisV⃞
The budding yeast Pichia pastoris contains ordered Golgi stacks next to discrete transitional endoplasmic reticulum (tER) sites, making this organism ideal for structure–function studies of the secretory pathway. Here, we have used P. pastoris to test various models for Golgi trafficking. The experimental approach was to analyze P. pastoris tER-Golgi
The American Society for Cell Biology.
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12. Evidence that phospholipase A2 activity is required for Golgi complex and trans Golgi network membrane tubulation
Membrane tubules of uniform diameter (60–80 nm) and various lengths (up to several micrometers) emanate from elements of the Golgi stack and trans Golgi network (TGN). These organelle membrane tubules are thought to be involved in membrane trafficking and maintenance of Golgi/TGN architecture. The number of these tubules, and their frequency of formation,
The National Academy of Sciences.