Dissertações: Recent submissions

  • GUIMARÃES, Ana Carolina Rennó; http://lattes.cnpq.br/4566819171558987 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2006-10-20)
    Nowadays, distribution networks operate under a new re-regulated market structure. In this new context, utilities should reduce their costs, which generally occur through measures that may significantly decrease the ...
  • FERREIRA, Fabrício Jorge Antunes; http://lattes.cnpq.br/1123356997794949 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2006-10-02)
    Researches in the wireless communication experienced an impressive growth in the last decade. The market demand for smaller and more functional devices opens new researches in the area of radio frequency – EF electronics. The ...
  • COELHO, Ulisses Raad; http://lattes.cnpq.br/9289799550308671 (Universidade Federal de ItajubáBrasilIRN - Instituto de Recursos NaturaisPrograma de Pós-Graduação: Mestrado - Meio Ambiente e Recursos HídricosUNIFEI, 2022-03-04)
    The generation of urban solid waste and its management still represent a problem of relevant dimensions in Brazil. The high presence of organic matter in these wastes can aggravate environmental problems, either by the ...
  • SOUZA, Michel Henry Bacelar de; http://lattes.cnpq.br/5784675887139893 (Universidade Federal de ItajubáBrasilIRN - Instituto de Recursos NaturaisPrograma de Pós-Graduação: Mestrado Profissional - Engenharia HídricaUNIFEI, 2022-03-03)
    Self-compacting concrete (SCC) is an innovative type of concrete that does not require vibration for compaction, being considered in the field of civil construction one of the great innovations of the sector in the ...
  • BRIGHENTI, José Renato Nunes (Universidade Federal de ItajubáBrasilIEPG - Instituto de Engenharia de Produção e GestãoPrograma de Pós-Graduação: Mestrado - Engenharia de ProduçãoUNIFEI, 2006-10-06)
    Computational simulation together with optimization is an important tool in the development of new projects, as the implantation of a new manufacture line. Simulation can be used in the most varied phases of a new line ...
  • MALDONADO, Manuel Arturo Rendón; http://lattes.cnpq.br/1580115716308628 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2005-03-30)
    Micro-turbines are distributed generation devices that have shown a notable potential in electric energy market in Brazil. This technology presents the characteristic of operating with several kinds of fuel, like ...
  • CUNHA, Erika Juliano; http://lattes.cnpq.br/3096921177986714 (Universidade Federal de ItajubáBrasilIEPG - Instituto de Engenharia de Produção e GestãoPrograma de Pós-Graduação: Mestrado - Engenharia de ProduçãoUNIFEI, 2005-05-12)
    This research describes the planning, the phases of execution and the troubles of the industrial experiment carried out for cellulose and paper industry. It was focused on the context of the chemical recovery. The ...
  • OLIVEIRA, Rubiane Heloisa; http://lattes.cnpq.br/8861151925177366 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2004-12-20)
    Nowadays, induction motor drive uses vector-control to get faster answer torque. To use flux estimation, direct measurement can be used with Hall sensors or another measurement technique or flux estimation by measurement ...
  • PRIOSTE, Fernando Buzzulini; http://lattes.cnpq.br/9435397883126442 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2005-04-04)
    The transient stability of power systems can be enhanced with the use of Fast Valving (FV) in steam turbines. Fast Valving control has been calling attention around the world due the fact that power systems are ...
  • FUGIVARA, Sérgio; http://lattes.cnpq.br/3397619960919211 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2005-04-05)
    This master degree thesis has as main goal change the Satellite Launching Vehicle analog acquisition system and optimize the data distribution of a hundred analog signals, for example temperature, pressure, vibration, ...
  • NASCIMENTO, Márcio Henrique Lima; http://lattes.cnpq.br/6194937155628813 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2005-03-04)
    The significant growth of electricity load mainly at developing countries demands investments in generation, transmission and distribution. The recent reorganization of the electrical sector promoted in diverse countries ...
  • CARRASCO, André Colen; http://lattes.cnpq.br/0376821195422398 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2005-03-18)
    The purpose of this dissertation is to present the development of a system capable of detecting incipient malfunction and also verify the correct operation of opening and closing of high voltage disconnectors thru digital ...
  • GASPAR, Everaldo Simões; http://lattes.cnpq.br/7200526505335982 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2005-06-01)
    This work presents a development of an equipment to test power semiconductors (diodes and thyristors). These semiconductors are extensively used in static compensators. It is introduced the theoretic foundations about ...
  • SOUZA, Antônio Marcos de; http://lattes.cnpq.br/9259557866385637 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2005-06-10)
    Medical equipment must present a high-level performance with efficiency attested by international regulatory agencies. This type of equipment must operate satisfactorily in electromagnetic environments, having good ...
  • NASCIMENTO, André Wagner Mota; http://lattes.cnpq.br/0835964436492083 (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Mestrado Profissional - Engenharia de MateriaisUNIFEI, 2005-02-04)
    In this work we have studied oscillating electronic circuit based on negative differential conductivity (NDC), with possibility to present chaos. The Chua’s circuit was chosen for the nonlinear dynamical and chaotic ...
  • SOUZA, Paulo Henrique Oliveira de; http://lattes.cnpq.br/1140359690398541 (Universidade Federal de ItajubáBrasilIFQ - Instituto de Física e QuímicaPrograma de Pós-Graduação: Mestrado - Materiais para EngenhariaUNIFEI, 2004-12-21)
    The conduction properties of polyaniline (PANI) have attracted a considerable attention of the re searchers due to its peculiar electrochemical behavior and good chemical and ambient stability. Ex tensive works about the ...
  • PAIVA, André Oliveira; http://lattes.cnpq.br/4672747062201189 (Universidade Federal de ItajubáBrasilIFQ - Instituto de Física e QuímicaPrograma de Pós-Graduação: Mestrado - Materiais para EngenhariaUNIFEI, 2006-03-03)
    Polyhydroxybutyrate (PHB) is a polymer synthesized by microorganism under nitrogen deficiency and has as main characteristic the biodegradability. Bioactive glasses belong to special systems as SiO2-MgO-CaO-P2O5. A ...
  • MILANEZ, José Renato Castro; http://lattes.cnpq.br/8643478071507738 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2006-09-15)
    MILANEZ, José Renato Castro. Desenvolvimento de um sistema on-line de monitoramento de entreferro utilizando sensores capacitivos. 2006. 158 f. Dissertação (Mestrado em Engenharia Elétrica) – Universidade Federal de Itajubá, ...
  • REZENDE, Leandro Soares; http://lattes.cnpq.br/8307583620397492 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2006-09-29)
    Electric energy utilities around the world have made use of interactive methodologies, in order to plan the expansion of their systems, based on deterministic criteria such as the “N-1”. Usually, it can be observed the ...
  • MOINO, Carlos Alberto Amaral; http://lattes.cnpq.br/8322259998285677 (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Mestrado - Engenharia MecânicaUNIFEI, 2006-07-28)
    This dissertation presents the development of a methodology for inverse airfoil design of axial turbomachine cascades by applying optimization algorithms based on Controlled Random Search (CRS algorithms). The airfoil ...