Browsing Engenharia Elétrica - Dissertações - EE Higienópolis by Issue Date
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Reconhecimento de caracteres numéricos manuscritos com autômatos celulares, através da noção de protótipos espectrais
(Universidade Presbiteriana MackenzieEngenharia ElétricaEngenharia ElétricaUPMBR, 2006-03-07)The computational ability of cellular automata (CAs) has been investigated in many research initiatives in the literature. Among them, one possibility is their use as spatial pattern recognizers. Here, we attempt to use ... -
O processo de migração de sistemas corporativos de comunicação TDM para plataformas convergentes IP com preservação de ativos
(Universidade Presbiteriana MackenzieEngenharia ElétricaEngenharia ElétricaUPMBR, 2006-06-29)The aim of this elaboration is to present a study of the migration process involved transforming the digital PBX (Private Branch Exchange), TDM (Time Division Multiplex), SPC (Stored Program Control) based platforms of ... -
Amplificador Raman discreto para utilização em transmissão CWDM na banda O
(Universidade Presbiteriana MackenzieEngenharia ElétricaEngenharia ElétricaUPMBR, 2006-08-02)Most of researches about Raman amplifier had been made in C and L bands (1530-1625 nm), which is possible to found more data of Raman efficiency gain and the requirements for design is consolidated. The first issue that ... -
Caracterização e análise de desempenho dos amplificadores ópticos Raman discretos em sistemas de comunicações ópticas na banda O
(Universidade Presbiteriana MackenzieEngenharia ElétricaEngenharia ElétricaUPMBR, 2006-08-02)The optical amplifier has improved the optical communication systems because they lead to an increase in transmission capacity of medium and long haul optical systems, with technological advantages over electronic regenerators. ... -
Estudo das perdas dependentes da polarização no anel de recirculação óptico
(Universidade Presbiteriana MackenzieEngenharia ElétricaEngenharia ElétricaUPMBR, 2006-08-03)An investigation of Polarization Dependent Loss (PDL) behavior is performed in an Recirculation Loop (RCL) experimental apparatus. The PDL statistical nature turns its accumulated contribution in the RCL different from the ... -
Detecção de intrusão em redes de computadores com estatísticas PDF e classificadores neurais
(Universidade Presbiteriana MackenzieEngenharia ElétricaEngenharia ElétricaUPMBR, 2006-08-19)This work is a study about architectures, methods and results on computer networks intrusion detection to avoid Denial-of-Services attacks. The main techniques used were: packet-oriented window observation, structured ... -
Análise de um amplificador Raman distribuído cobrindo as Bandas C e S utilizando a fibra óptica TrueWave Reach Low Water Peak
(Universidade Presbiteriana MackenzieEngenharia ElétricaEngenharia ElétricaUPMBR, 2006-08-29)The performance of a distributed Raman amplifier at C and S bands using the TrueWave Reach LWP fiber in 100 km span is analyzed through numerical simulations. The physical parameters of the fiber, such as, attenuation, ... -
Análise de um amplificador Raman distribuído nas bandas S+ e S utilizando a fibra óptica TrueWave® Reach Low Water Peak
(Universidade Presbiteriana MackenzieEngenharia ElétricaEngenharia ElétricaUPMBR, 2006-08-29)The performance of a distributed Raman amplifier at S - Band using the TrueWave® Reach Low Water Peak fiber in a 100km span is analyzed through numerical simulations. The manufacturer, the OFS Fitel Denmark Ap, has ... -
Desenvolvimento de um WebLab para experimentos remotos em fotônica integrado a um ambiente virtual de ensino-aprendizagem
(Universidade Presbiteriana MackenzieEngenharia ElétricaEngenharia ElétricaUPMBR, 2006-08-30)The association of Web Technology with instrument automation and control by computer has made possible the development of the so called Remote Laboratories or WebLabs distributed environments that allow to access and ... -
Método para determinação dos pesos sinápticos em uma rede de PLLs reconhecedora de imagens
(Universidade Presbiteriana MackenzieEngenharia ElétricaEngenharia ElétricaUPMBR, 2006-09-11)Recognition of patterns can be performed by using neural networks built with oscillators, like phase-locked loops (PLLs). These networks are modeled with differential equation systems and can be studied by using Dynamical ... -
Extração de contornos de figuras via sincronismo em redes de osciladores com acoplamento dinâmico
(Universidade Presbiteriana MackenzieEngenharia ElétricaEngenharia ElétricaUPMBR, 2006-09-18)A variant of Kuramoto's model for phase oscillators with dynamic coupling is studied. The coupling weight is adjusted by the phase difference resulting in a connection which is strengthened for synchronized oscillators and ... -
Automatizando a obtenção da complexidade baseada em linguagem regular de autômatos celulares elementares
(Universidade Presbiteriana MackenzieEngenharia ElétricaEngenharia ElétricaUPMBR, 2006-10-09)Cellular automata are dynamical and computational systems, totally discrete in time, space and their state variables. It is known that, for elementary cellular automata, the set of all possible configurations that can ... -
Sobre equalizadores autodidatas de decisão realimentada aplicados a sistemas multiusuário
(Universidade Presbiteriana MackenzieEngenharia ElétricaEngenharia ElétricaUPMBR, 2007-01-24)Due to the growing demand for mobile communications, adaptive equalizers play an important role for enhancing the efficiency of data transmission. In this scenario, the Decision Feedback Equalizer (DFE) stands out. It ... -
Estudo de variabilidades espectral e temporal de radiofontes
(Universidade Presbiteriana MackenzieEngenharia ElétricaEngenharia ElétricaUPMBR, 2007-02-02)We present the results of a 2-year project to monitor the spectral and temporal variability of Sagittarius A, Centaurus A, OV236 and the Einstein s Ring PKS1830-211 from 2004 to 2006. The observational data were obtained ... -
Detecção e rastreio de faces utilizando redes Bayesianas
(Universidade Presbiteriana MackenzieEngenharia ElétricaEngenharia ElétricaUPMBR, 2007-02-26)This work presents a face detection system that uses a Bayesian Network to combine information from different computational cheap visual operators. The aim in this work is to show that combining simple features in a Bayesian ... -
Comparação entre esquemas de transmissão e recepção com única e múltiplas portadoras
(Universidade Presbiteriana MackenzieEngenharia ElétricaEngenharia ElétricaUPMBR, 2007-03-07) -
Gestão eletrônica de documentos: gerenciamento do conhecimento para grupos de pesquisa
(Universidade Presbiteriana MackenzieEngenharia ElétricaEngenharia ElétricaUPMBR, 2007-03-12)The evolution of information and data base management systems, artificial intelligence and neural networks, among other technologies, had contributed to the manipulation of an enormous amount of data and information by ... -
Otimização da topologia de circuitos de distribuição de energia elétrica usando algoritmos inspirados no comportamento de formigas
(Universidade Presbiteriana MackenzieEngenharia ElétricaEngenharia ElétricaUPMBR, 2007-03-19)Ant colonies can be considered a multi-agent system, where each agent (ant) works independently by simple rules. Algorithms based on the behavior of ant colonies have been used to solve optimization problems, because in ... -
Ambiente de apoio à avaliação continuada baseado em aprendizagem significativa
(Universidade Presbiteriana MackenzieEngenharia ElétricaEngenharia ElétricaUPMBR, 2007-08-06)The democratization of information transform a classroom in an environment where it s impossible for a teacher to establish each apprentice s domain of knowledge and to individualize the teaching learning process. The ... -
Uso de rede de Kohonen para a clusterização de objetos de aprendizagem
(Universidade Presbiteriana MackenzieEngenharia ElétricaEngenharia ElétricaUPMBR, 2007-08-08)The increasing availability of digital education resources in the Internet, called learning objects, has been followed by the definition of indexation standards. However, the lack of consensus about the definition of ...