Browsing IMEF - Artigos publicados em periódicos by Title

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  • O ModelCiências – um portal para o projeto Modelagem Semiquantitativa e Quantitativa na Educação em Ciências 

    Santos, Arion de Castro Kurtz dos; Vargas, André Prisco; Mendizabal, Odorico Machado; Madsen, Carlos Alberto Barros Cruz Westhead (2003)
    O artigo apresenta alguns fundamentos da modelagem computacional, bem como algumas das ferramentas que estarão disponíveis no ModelCiências, que é um portal do projeto Modelagem Computacional Semiquantitativa e Quantitativa ...
  • Modeling an Oil Spill along the Southern Brazilian Shelf: Forcing Characterization and Its Influence on the Oil Fate 

    Stringari, Caio Eadi; Marques, Wiliam Correa; Eidt, Renata Tatsch; Mello, Leonardo Fagundes de (2013)
    Oil spills can generate multiple effects in different time scales on the marine ecosystem. The numerical modeling of these processes is an important tool with low computational cost which provides a powerful appliance to ...
  • Modeling the hydrodynamics of the southern brazilian shelf 

    Marques, Wiliam Correa; Monteiro, Igor Oliveira; Möller Junior, Osmar Olinto; Fernandes, Elisa Helena Leão (2006)
  • Modeling the wind influence in an oil spill along the southern Brazilian shelf 

    Stringari, Caio Eadi; Marques, Wiliam Correa; Mello, Leonardo Fagundes de; Eidt, Renata Tatsch (2012)
    Oil spills can generate different effects in different time scales on the marinecosystem. The numerical modeling of this process is an important tool with low computational cost which provides a powerful appliance ...
  • Modelo econômico supersimétrico 3–3–1 

    Dong, Paulo Vicente; Rodriguez, Marcos Cardoso; Do, Thi Huong; Hong, Ngoc Long (2007)
    É apresentada a extensão supersimétrica do modelo econômico 3–3–1. As equações de restrição e a identificação do bóson de calibre estabelecem uma relação entre os valores esperados de vácuo (VEVs) nos elementos superior e ...
  • Modelo pedagógico relacional na educação estatística 

    Pinto, Suzi Samá; Silva, Mauren Porciúncula Moreira da (2011)
    A estratégia de ensino usada pelo professor em suas aulas depende da crença que ele tem sobre como o estudante aprende. Muitas vezes, essa estratégia não está embasada em nenhum modelo pedagógico e sim na prática do senso ...
  • Modified iterated Tikhonov methods for solving systems of nonlinear ill-posed equations 

    Cezaro, Adriano de; Baumeister, Johann; Leitão, Antônio (2011)
    We investigate iterated Tikhonov methods coupled with a Kaczmarz strategy for obtaining stable solutions of nonlinear systems of ill-posed operator equations. We show that the proposed method is a convergent regularization ...
  • Näive dimensional analysis in an effective field theory for neutron stars 

    Maekawa, Claudio Masumi; Razeira, Moisés; Lütz, Eduardo; Vasconcellos, César; Dillig, Manfred (2004)
    In the investigation of the role of naturalness in e_ective theory, we focus on dense hadronic matter in a generalized relativistic multi-baryon Lagrangian density mean _eld approach which contains nonlinear self-couplings ...
  • A new parameterized potential family for path planning algorithms 

    Ferrari, Fabricio (2009)
    In this work, it is proposed a new family of potentials for path planning algorithms, one kind to the goal and other to the obstacles. With these new potentials it is possible to parameterize the potential scale length ...
  • New thought experiment to test the generelized second law of thermodynamics 

    Matsas, George Emanuel Avraam; Silva, André Ricardo Rocha da (2005)
    We propose an extension of the original thought experiment proposed by Geroch, which sparked much of the actual debate and interest on black hole thermodynamics, and show that the generalized second law of thermodynamics ...
  • A note on uniqueness in the identification of a spacewise dependent source and diffusion coefficient for the heat equation 

    Cezaro, Adriano de; Johansson, Thomas (2012)
    We investigate uniqueness in the inverse problem of reconstructing simultaneously a spacewise conduc- tivity function and a heat source in the parabolic heat equation from the usual conditions of the direct problem and ...
  • Uma nova formulação analítica para a resolução de problemas de poluição aquática 

    Ribeiro, Vinicius Gadis; Poffal, Cristiana Andrade; Zabadal, Jorge Rodolfo Silva (2009)
    A simulação de processos envolvendo propagação de poluentes em meio aquático detém elevada relevância, em razão de reduzir significativamente os custos do projeto e construção de redes de esgoto. As duas principais aplicações ...
  • Um novo algoritmo para a modelagem dinâmica de manipuladores flexíveis 

    Machado, Celiane Costa; Pereira, Adriana Elisa Ladeira; Gomes, Sebastião Cícero Pinheiro; Bortoli, Álvaro Luiz de (2002)
    Controlar de forma ativa estruturas flexíveis permanece um problema ainda em aberto, tendo sido objeto de muitas pesquisas, principalmente a partir dos anos oitenta. Apesar de existirem muitos trabalhos dedicados à modelagem ...
  • Um novo critério de adaptação de malhas. 

    Popiolek, Tales Luiz; Santos, Maria Angela Vaz dos (2001)
    Este trabalho apresenta um novo critério de adaptação de malhas, fundamentado na teoria estatística de distribuições normais, aplicado como uma ferramenta de análise da qualidade de soluções numéricas, obtidas através do ...
  • Nuclear medium effects in J/Ψ production at HERA 

    Ayala Filho, Alvaro Leonardi; Mariotto, Cristiano Brenner; Gonçalves, Victor Paulo Barros (2007)
    In this paper we estimate the influence of the shadowing effect and initial state parton energy loss in the quarkonium production at HERA-B. We analyze the xF behavior of the effective exponent α(xF) and present a comparison ...
  • Nuclear parity violation in effective field theory 

    Zhu, Shi-Lin; Maekawa, Claudio Masumi; Holstein, Barry; Ramsey-Musolf, Michael; Van Kolck, Ubirajara (2005)
    We reformulate the analysis of nuclear parity violation (PV) within the framework of effective field theory (EFT). To O(Q), the PV nucleon–nucleon (NN) interaction depends on five a priori unknown constants that parameterize ...
  • Nuclear shadowing and prompt photons in hadronic collisions at ultrarelativistic energies 

    Mariotto, Cristiano Brenner; Gonçalves, Victor Paulo Barros (2008)
    The production of prompt photons at high energies provides a direct probe of the dynamics of strong interactions. In particular, one expects that it could be used to constrain the behavior of the nuclear gluon distribution ...
  • Nucleon-Nucleon interaction: central potential and pion-production 

    Maekawa, Claudio Masumi; Pupin, Joel Cesar; Robilotta, Manoel Roberto (2000)
    We show that the tail of the chiral two-pion exchange nucleon-nucleon potential is proportional to the pion-nucleon (pN) scalar form factor and discuss how it can be translated into effective scalar meson interactions. We ...
  • Numerical modeling of the Patos Lagoon coastal plume 

    Marques, Wiliam Correa; Fernandes, Elisa Helena Leão; Monteiro, Igor Oliveira; Möller Junior, Osmar Olinto (2008)
    The Southern Brazilian Shelf (SBS) is a freshwater-influenced region, but studies on the dynamics of coastal plumes are sparse and lack in space-time resolution. Studies on the dynamics of the Patos Lagoon plume are even ...
  • Numerical Simulation of water Circulation in a Cylindrical Horizontal Thermal Tank 

    Savicki, Darci Luiz; Vielmo, Horácio Antonio (2009)
    It is carried out a numerical study of the three-dimensional temperature and velocity fields in a cylindrical horizontal thermal tank during the process of water circulation. The numerical simulations were made using an ...