Teses: Recent submissions

  • BALBINO, Nádia Alves Nery; http://lattes.cnpq.br/3025245023121749 (Universidade Federal de ItajubáBrasilIFQ - Instituto de Física e QuímicaPrograma de Pós-Graduação: Doutorado - Materiais para EngenhariaUNIFEI, 2021-11-05)
    Cemented carbide is a composite material consisting of hard ceramic particles embedded in a ductile metal matrix, called the binder phase. These materials exhibit a unique combination of mechanical properties, having ...
  • KASHIWAGI, Fábio Norikazu; http://lattes.cnpq.br/6790090771931717 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Doutorado - Engenharia ElétricaUNIFEI, 2021-09-13)
    Technology advances have allowed and made easier the miniaturization of the shape and size of electronic components to operate low power ranges. On the one hand, the trend of creating complex electronic systems with a ...
  • OLIVEIRA, Márcio de; http://lattes.cnpq.br/7854923533452240 (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Doutorado - Engenharia MecânicaUNIFEI, 2005-06-15)
    A theoretical study of laminar and turbulent flow with heat transfer by forced, natural, and mixed convections is performed in this work using the finite volume method to approximate solutions to some different domains ...
  • FLAUZINO JUNIOR, Alexandre; http://lattes.cnpq.br/2475764360924249 (Universidade Federal de ItajubáBrasilIFQ - Instituto de Física e QuímicaPrograma de Pós-Graduação: Doutorado - Materiais para EngenhariaUNIFEI, 2021-10-25)
    The chemically modified of chitosan lactate are among the chitosan derivatives that have much superior non-cytotoxic properties when compared to other chitosan derivatives. Chitosan lactate, has a solubility close to ...
  • SILVA, Tatiane Caetano; http://lattes.cnpq.br/4598500479688368 (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Doutorado - Engenharia MecânicaUNIFEI, 2021-08-13)
    This thesis presents technical, economic, risk, and sensitivity analysis for a micro photovoltaic power plant installed at the UNIFEI campus. For technical analysis it was modeled three different scenarios: Scenario I, ...
  • MOHN, Fritz Walter; http://lattes.cnpq.br/3707317038774023 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Doutorado - Engenharia ElétricaUNIFEI, 2005-06-03)
    This thesis deals with voltage collapse phenomenon in power systems. To identify the critical buses, bifurcation theory is employed. The load flow model adopted here allows a better identification of saddle-node ...
  • OLIVEIRA, Thiago Luiz Lara; http://lattes.cnpq.br/6578365982805080 (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Doutorado - Engenharia MecânicaUNIFEI, 2021-08-16)
    In aerospace industry, composite materials offer several advantages, such as high weight-to strength ratio and corrosion resistance. Aerospace materials are costly and have high safety standards, frequently using ...
  • FARIA NETO, Antonio; http://lattes.cnpq.br/8577293854899248 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Doutorado - Engenharia ElétricaUNIFEI, 2005-12-16)
    The variational calculus is directly related to the energetic modeling of physical systems in general. The advantage of such approach in relation to the classical approaches (Newtonians) is that a system can be subdivided ...
  • OGOULOLA, Christel Enock Ghislain; http://lattes.cnpq.br/1882192096482280 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Doutorado - Engenharia ElétricaUNIFEI, 2021-09-14)
    Power quality improvement, reliability and availability of electrical power are significant concerns in power systems. In this context, multi-pulse converters are interface devices between the AC electrical system and ...
  • KAIZER, Betânia Mafra; http://lattes.cnpq.br/8571379585363527 (Universidade Federal de ItajubáBrasilIEPG - Instituto de Engenharia de Produção e GestãoPrograma de Pós-Graduação: Doutorado - Engenharia de ProduçãoUNIFEI, 2021-09-14)
    Before the pandemic of COVID-19, university managers had been showing interest in identifying factors that lead individuals to learn better, or to drop out of a course, or even to fail a subject. Finding answers to these ...
  • MELLO, Luiz Gustavo de; http://lattes.cnpq.br/2131654065634576 (Universidade Federal de ItajubáBrasilIEPG - Instituto de Engenharia de Produção e GestãoPrograma de Pós-Graduação: Doutorado - Engenharia de ProduçãoUNIFEI, 2021-07-15)
    This study presents a nonlinear multi-objective optimization method for defining optimal weights for combining time series forecasting methods used to estimate annual natural gas demands. The weight allocation approach ...
  • OLIVEIRA, Lucas Guedes de; http://lattes.cnpq.br/9119669161759099 (Universidade Federal de ItajubáBrasilIEPG - Instituto de Engenharia de Produção e GestãoPrograma de Pós-Graduação: Doutorado - Engenharia de ProduçãoUNIFEI, 2020-08-07)
    Response Surface Methodology is an effective framework for performing modelling and optimization of industrial processes. The Central Composite Design is the most popular experimental design for response surface analyses ...
  • RIBEIRO, Luiz Henrique; http://lattes.cnpq.br/5643235533402395 (Universidade Federal de ItajubáBrasilIFQ - Instituto de Física e QuímicaPrograma de Pós-Graduação: Doutorado - Materiais para EngenhariaUNIFEI, 2021-09-03)
    This work presents the study of electronic transport on a set of five multilayer molecular beam epitaxy-grown InAs/GaAs semiconductor samples. We developed an automated switch system to carry out electronic transport ...
  • MONTEIRO, Maíra Ribas; http://lattes.cnpq.br/7519371612187819 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Doutorado - Engenharia ElétricaUNIFEI, 2021-07-30)
    The fast-paced and meaningful penetration of distributed energy resources (DERs), such as variable renewable energy sources (RESs), concurrently with the widespread occurrence of natural disasters and man-made threats, ...
  • WERDINE, Demarcus; http://lattes.cnpq.br/6080319414713542 (Universidade Federal de ItajubáBrasilIFQ - Instituto de Física e QuímicaPrograma de Pós-Graduação: Doutorado - Materiais para EngenhariaUNIFEI, 2021-07-27)
    The present work aims to analyze the influence of the incorporation of rubber waste from scrap tires (RWT) in different contents and granulometries, in partial replacement for sand, in the physical and mechanical properties ...
  • RIBEIRO, Aureliano Rodrigues Barborati; http://lattes.cnpq.br/9394369057423767 (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Doutorado - Engenharia MecânicaUNIFEI, 2021-04-23)
    In this thesis a dynamic analysis is made through the solution of the differential equation of motion of a composite beam model composed of three layers, two with composite material and one with a viscoelastic core. ...
  • GUEDES, Fabiana Costa; Lattes: http://lattes.cnpq.br/2547966227087500 (Universidade Federal de ItajubáBrasilIRN - Instituto de Recursos NaturaisPrograma de Pós-Graduação: Doutorado - Multicêntrico em Química de Minas GeraisUNIFEI, 2021-06-11)
    In recent years, a significant evolution in the simulations in molecular dynamics (DM) has been noticed either in the precision of results compared to the real world or in the capacity to represent complex biological ...
  • SOUZA, Gabriel Cirac Mendes; http://lattes.cnpq.br/9282621947516871 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Doutorado - Engenharia ElétricaUNIFEI, 2021-07-13)
    Técnicas de reconhecimento de padrões no Sinal Mioelétrico (EMG) são empregadas no desenvolvimento de próteses robóticas, e para isso, adotam diversas abordagens de Inteligência Artificial (IA). Esta Tese se propõe a ...
  • COSTA, Roberto Berlini Rodrigues da; 999999999 (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Doutorado - Engenharia MecânicaUNIFEI, 2021-07-16)
    The growing global demand for power generation using renewable energy sources is fundamental for the longevity of modern civilization. With the prospects for mitigating the environmental impacts arising from fuels, ...
  • ALMEIDA, Fabrício Alves de; http://lattes.cnpq.br/5444004788192327 (Universidade Federal de ItajubáBrasilIEPG - Instituto de Engenharia de Produção e GestãoPrograma de Pós-Graduação: Doutorado - Engenharia de ProduçãoUNIFEI, 2021-04-30)
    The technological advent provided the rise of data collection in companies, governments and various industrial segments. In this respect, techniques that seek to perform groupings and discrimination of clusters are widely ...