Virtual Topology
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Integrated planning of optical networks - optimization and protection in virtual and physical topologies / Planejamento integrado de redes óticas - otimizção e proteção nas topologias virtual e física
This work aims to design integrated optical networking, which in the literature, due to complexity, is divided into Virtual Topology Design (VTD) and Physical Topology Design (PTD). Linear programming and heuristics are proposed to maximize the utilization of the network, so that for future demands, the same network may remain able to meet the requests, with
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/03/2010
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2. Contribuições para a análise e simulação de redes ópticas: aspectos de Engenharia de Tráfego, restauração dinâmica e conversão de comprimentos de onda / Contributions for the analysis and simulation of optical networks: aspects of traffic engineering, dynamic restoration and conversion of wavelenghts
The Wavelength Division Multiplexing (WDM) technology as well as both the introduction of all optical OXCs (Optical Cross Connect) and OADMs (Optical Add/Drop Multiplexer) may provide the optical network with the networking function, i.e, the capacity to manipulate wavelengths in order to implement their routing. This possibility implies a new type of relati
Publicado em: 2009
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3. An approach to inter-domain resource reservation for QoS management in next generation networks / Uma abordagem para reserva de recursos no gerenciamento de QoS entre dominios em redes de proxima geração
The technological evolution that happened on the last decades fostered the steep growth of the Internet, the creation of new Internet capable devices, like sensors and PDAs, and the creation of a multitude of online applications. This new scenario brought challenges very different from those initially considered on the creation of the Internet, so emerged th
Publicado em: 2009
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4. Precision analysis of an assymetric parallel kinematic robotic structure, with topology 2UPS+PRP, due to the positioning error mapping of the mobil platform in the avaliable workspace, during finishing milling operation, applying mathematical modeling. / Análise da precisão de uma estrutura robótica com cinemática paralela assimétrica de topologia 2UPS+PRP em função do mapeamento dos erros de posicionamento da plataforma móvel no espaço de trabalho disponível, durante operação de fresamento de acabamento, aplicando modelagem matemática.
Esta tese tem por objetivo estudar a precisão de uma nova estrutura robótica para operações de fresamento, em substituição às convencionais maquinas-ferramentas seriais, especialmente as fresadoras e os centros de usinagem CNC. A estrutura proposta está baseada no conceito da cinemática paralela, tendo a análise da precisão sido realizada em funç
Publicado em: 2009
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5. VXDL: A LANGUAGE FOR INTERCONNECTION AND RESOURCES SPECIFICATION IN VIRTUAL GRIDS / VXDL: UMA LINGUAGEM PARA DESCRIÇÃO DE INTERCONEXÕES E RECURSOS EM GRADES VIRTUAIS
Grid computing has been defined as an infrastructure integrator of distributed resources. Although it is already used on a large scale in many areas, this type of computational infrastructure is still an area of active research, with many open questions. Today, new research works investigate the application of resources virtualization techniques to perform t
Publicado em: 2008
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6. Um middleware reconfigurÃvel para redes de sensores sem fio
The WSN attractivity for environment conditions monitoring and to be the bridge between the physical and virtual world has been increasing due to the advances in the micro-electronics, which enabled the production of several sensor types like illumination, humidity, temperature, smoke, radiation, acoustic, seismic, etc. in a chip that processes the signal an
Publicado em: 2006
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7. Redes e políticas públicas: tecendo uma perspectiva analítico-institucional / Public policies and webs: weaving an analytical-institutional perspective
This thesis addresses the theme of networks, situating it in the field of Psychology as a conception that has been largely used in the formulation of public policies on mental health and on childhood and adolescence. The human being subjectivizes himself/herself having as a reference all those things and people with which they establish an association. In th
Publicado em: 2006
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8. PROJETO DE TOPOLOGIAS VIRTUAIS PARA REDES ÓPTICAS MULTISERVIÇO
Optical communication systems have emerged as the best solution for large scale data transport network implementation, providing optical channels with very high bit rates and covering large distances with low error probability. The entire bandwidth of the optical fibers became available with the development of the wavelength division multiplexing (WDM) techn
Publicado em: 2005
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9. Supercondutividade nodal em metais de transição dicalcogenados
We investigate the macroscopic effects of charge density waves (CDW) and superconductivity in layered superconducting systems with broken lattice inversion symmetry (allowing for piezoelectricity) such as two dimensional (2D) transition metal dichalcogenides (TMD). We work with the low temperature time dependent Ginzburg-Landau theory and study the coupling
Publicado em: 2004
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10. Proposta de um modelo de seguranÃa para VPNs na interligaÃÃo de redes corporativas
A Virtual Private Network - VPN is a protected connection, built for the private use of the enterprise, over a shared public network. A VPN uses security protocols, cryptography technologies and authentication to guarantee characteristics of a private and dedicated network to enterprises that use a not-trustworthy infrastructure, as the Internet, for interco
Publicado em: 2004
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11. Implementation of a data structure for scientific visualization / "Implementação de uma estrutura de dados para visualização científica"
Volumetric data structures are of extreme utility in various applications, and particularly in the area of Scientific Visualization. These structures are useful in two stages of the visualization process. The first one is in data representation, that is, in the organization of information associated with the values, measured or simulated, to be visualized. T
Publicado em: 2003
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12. Prediction of Quinolone Activity against Mycobacterium avium by Molecular Topology and Virtual Computational Screening
We conducted a quantitative structure-activity relationship study using a database of 158 quinolones previously tested against Mycobacterium avium-M. intracellulare complex in order to develop a model capable of predicting the activity of new quinolones against the M. avium-M. intracellulare complex in vitro. Topological indices were used as structural descr
American Society for Microbiology.