UNIFEI - Campus 1: Itajubá: Recent submissions

  • LUGLI, Alexandre Baratella; http://lattes.cnpq.br/5881767597296521 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2007-10-17)
    The standard protocol TCP/IP is one of the most wild spread architectures for long, average and short distances involving computers. So, for trying the industrial networks standardization, there are some years, it was ...
  • GARCIA, Marco Aurélio Raphul Azevedo; http://lattes.cnpq.br/8764457950981380 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2006-11-25)
    There are three forms of a hidroelectric system to self-protect by hydrological and load risks: the first one is the water storage; the second is the complementarities thermal; the third is the increase of the elasticity ...
  • DALLOCCHIO, Nelson (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2007-09-28)
    The use of advanced hardware and digital computers in electrical management systems potentially enhance the supervision and control tasks in real time operation mode. These functions allow the safe operation of electrical ...
  • PEREIRA, Dejanir Ricardo; http://lattes.cnpq.br/4257015507636069 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2007-08-31)
    This work presents the development and application of a software system for coordination and selectivity protection studies in overhead distribution power systems. It is emphasized that this software was developed as ...
  • SILVA NETTO, Roberto; http://lattes.cnpq.br/3751634633048511 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2006-12-18)
    The number of cyber attack is growing up more and more, because, the tools of invasion is become more widely e easy to find and the vulnerabilities take a long time to be corrected. For all this, the Intrusion Detection ...
  • CARNEIRO, William Alves; http://lattes.cnpq.br/5580607960086202 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2007-06-06)
    This dissertation describes in a simplified manner, the composing elements of a thermal power plant, which operates in combined cycle and deals with its working principles, types and specific characteristics. In this ...
  • MONIZ, Octávio Vieira (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2007-09-10)
    The transformer is a very important equipment inside of the context of an electrical power system. It makes possible the electric energy supply. The useful life technique of a transformer depends on its efficiency, its ...
  • BACHEGA, Renata Jacyszyn (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2006-09-19)
    Nowadays, in power systems, the concept of reliability is getting more and more importance. Therefore, it is a tough task to take any equipment out of operation to carry out some tests in order to know its behavior ...
  • FERREIRA, Isaac Caldas; http://lattes.cnpq.br/4719959810078299 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Ciência e Tecnologia da ComputaçãoUNIFEI, 2018-06-15)
    In this work, we present the development of an Open Source Anti-Spam System (SASCA) in Java. Unlike commercial anti-spam systems, SASCA does not make use of block lists (black / white), but rather of m machine learning ...
  • SILVA, Vanusa de Souza Vilela; http://lattes.cnpq.br/5635535032247055 (Universidade Federal de ItajubáBrasilIFQ - Instituto de Física e QuímicaPrograma de Pós-Graduação: Mestrado - Ciência e Engenharia de MateriaisUNIFEI, 2009-11-27)
    Epoxy resins are thermosetting polymers that cure when mixed with a catalyzing agent or "hardener”. The epoxy network formation is strongly dependent of the stoichiometry ratio between the functional groups of the epoxy ...
  • SOUZA, João José de; http://lattes.cnpq.br/1624402095512504 (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Mestrado - Engenharia MecânicaUNIFEI, 2006-10-02)
    In this work healthy were accomplished studies of Heat Transfer problems embracing forced, natural and mixed convection. We studied 4 cases and 3 distinct rectangular cavities geometrical with distinct rates. In case 1: ...
  • SILVA, Dagoberto Cássio da; http://lattes.cnpq.br/6462684377051193 (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Mestrado - Engenharia MecânicaUNIFEI, 2004-11-17)
    The main goal of this work is the application of the thermoeconomics concepts according to the methodology proposed by Theory of Exergetic Cost in a preliminary study of a great load thermal unit. It is about of a ...
  • SOUZA, Helder José Celani de (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2003-04-24)
    The magnetic levitation, also known as magnetic suspension and abreviated by Maglev, is a result of the magnetic attraction, repulsion and forces equilibrium physical principles apllied to a determined object in the ...
  • LIMA, Luana Medeiros Marangon; http://lattes.cnpq.br/7482797265293559 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2007-04-20)
    After eight years of the restructuring process, it is possible to analyze the current stage of the Brazilian electrical sector. The way how transmission was structured to introduce competition on the generation and ...
  • ALMEIDA, Fabiano Ribeiro do Vale; http://lattes.cnpq.br/5727027464065807 (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Mestrado - Engenharia MecânicaUNIFEI, 2003-10-31)
    The main objective of this dissertation is to study self-excited vibrations, applied in rolls of paper machines, lathes and mainly in a ventilation system. The study also contains a model of a self-excited fluid, that ...
  • QUEIROZ, Anderson Rodrigo de; http://lattes.cnpq.br/4336239163436184 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2007-04-20)
    The introduction of competition on the electricity sector has turned the electricity price the most important variable in the energy market. On this way, efficient estimating methods of spot prices have became crucial to ...
  • MAGINA, Flávio de Carvalho (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2007-07-30)
    The electric power transmission lines consist in one of the most important components of the electrical system and its vulnerability to the meteorological phenomena is a determinative factor in its design and operation. ...
  • CARVALHO, Humberto Figueiredo de (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Mestrado - Engenharia ElétricaUNIFEI, 2007-06-21)
    The Ethernet technology from enterprise level forced the evolution of other fieldbuses in the factory ground. Therefore, several manufacturers nowadays present different Ethernet solutions now called Industrial Ethernet. ...
  • MURAT, Júlio César Mendes; http://lattes.cnpq.br/3617080115725376 (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Mestrado - Engenharia MecânicaUNIFEI, 2003-12-05)
    In this work, the numerical simulation of two-dimensional incompressible turbulent flow, through a circular pipe using the control volume method is presented. For the flow, one turbulence model is tested: the Algebraic ...
  • BRAGA, Alexandre Viana; http://lattes.cnpq.br/4001258943995328 (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Mestrado - Engenharia de EnergiaUNIFEI, 2002-12-16)
    The aim of this dissertation is the development of an induction generator voltage control system, regardless of the machine load. The method consists basically of using fixed capacitors, associated with TCR’s (Thyristor ...