Neural Network Computer Science
Mostrando 13-20 de 20 artigos, teses e dissertações.
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13. A Methodology for attack detection in the network traffic based on neural networks / Uma metodologia para detecção de ataques no tráfego de redes baseada em redes neurais
A fim de precaver-se contra situações inesperadas e indesejadas e impedir a proliferação dos ataques continuamente lançados contra diferentes alvos na rede, são implantados mecanismos de proteção, tais como firewalls, antivírus, sistemas de autenticação, mecanismos de criptografia e sistemas de detecção de intrusão nos ambientes de rede por tod
Publicado em: 2007
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14. Development and application of shunt active filters for three-phase four-wire systems / Estudo e aplicação de filtros ativos paralelos para sistemas trifasicos com quatro fios
Electricity power quality has gained increased importance in the past few years. The growing number of power electronicsbased loads has created a preoccupation about harrnonic distortion in electric systems. Electricity power quality is an important issue both for energy utilities and consumers. Harrnonic poIlution may cause severe problems to electricity ut
Publicado em: 2005
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15. Utilização de logica nebulosa na detecção de vazamentos em dutos
Pipeline is an efficient and economic means of transporting petroleum products. However, risks associated with accidental release of transported product are still high. That issue has motivated the development of many methods for leak detection, mainly based on process variables. In the present dissertation, the high correlation between the inlet-outlet flow
Publicado em: 2003
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16. Modelagem matematica e simulação numerica de um sistema reacional composto por reatores tipo tanque agitado e tubular em processos de polimerização
The present work consists of a mathematical modeling and numerical simulation of a solution polymerization reaction, using as study case the polystyrene. The reaction system is composed by a continuous stirred tank reactor (CSTR) for prepolymerization, associated in series with a tubular reactor to carry out the reaction until high conversion values. A simpl
Publicado em: 2001
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17. ConstruÃÃo de um nariz artificial usando redes neurais
The animals interact with environment in several ways. The smell around them has an extremely importance in the information transport, essential for survival. Such as for the animals, the smell plays an important rule for human beings. Due to this importance, the study in the human olfactory system is very helpful and started very long time ago. Although it
Publicado em: 2000
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18. Uma contribuição para o monitoramento de retificação cilindrica de mergulho / A contribution to cylindrical plunge grinding monitoring
The main goal of this work is to verify the feasibility of employing artificial neural networks to analyse signals from several sensors (acoustic emission, vibration and electric current) attached to the tailstock of a cylindrical plunge grinding machine in order to increase the accuracy of the automatic decision of the wheel dressing momento A second goal i
Publicado em: 1999
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19. Controle de vibração torcional em sistemas rotativos usando redes neurais multicamadas / Torsional vibration control in rotating systems using muitilayer neural networks
The purpose of this work is the development of control strategies of torsional vibration in rotating systems, with the objective of minimizing the significant modes of torsional vibration in steadystate. The active control was employed through a multilayer neural network controler, using back-propagation, feeding the system with the same driving electric mot
Publicado em: 1998
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20. Representação e aquisição de regras em sistemas conexionistas
This work addresses the problem of representing structured knowledge (as a set of rules) in connectionist systems. First, modular connectionist networks are studied. In this kind of network, groups of neurons may be associated with rule antecedents or consequents. Next, we show some ways by which these networks are associated with fuzzy logic concepts (neuro
Publicado em: 1995