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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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Cezaro, Adriano de
(2012)
We investigate a level-set type method for solving ill-posed problems, with the assumption that the solutions are piecewise, but not necessarily constant functions with unknown level sets and unknown level values. In order ...
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Cezaro, Adriano de; Leitão, Antônio; Tai, Xue-Cheng
(2009)
We propose a regularization method for solving ill-posed problems, under the assumption that the solutions are piecewise constant functions with unknown level sets and unknown level values. A level set framework is established ...
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Cezaro, Adriano de; Leitão, Antônio; Tai, Xue-Cheng
(2009)
We analyze a multiple level-set method for solving inverse problems with piecewise constant solutions. This method corresponds to an iterated Tikhonov method for a particular Tikhonov functional Gα based on TV–H1 penalization. ...
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Cezaro, Adriano de; Leitão, Antônio; Tai, Xue-Cheng
(2013)
We investigate level-set-type methods for solving ill-posed problems with discontinuous (piecewise constant) coefficients. The goal is to identify the level sets as well as the level values of an unknown parameter function ...
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Cezaro, Adriano de; Haltmeier, Markus; Leitão, Antônio; Scherzer, Otmar
(2008)
We investigate modified steepest-descent methods coupled with a loping Kaczmarz strategy for obtaining stable solutions of nonlinear systems of ill-posed operator equations. We show that the proposed method is a convergent ...
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Monteiro, Igor Oliveira; Marques, Wiliam Correa; Fernandes, Elisa Helena Leão; Möller Junior, Osmar Olinto
(2011)
The Patos Lagoon is located in the southernmost part of Brazil, between 30u–32u S and 50u–52u W, being connected to the South Atlantic Ocean via a narrow channel that is less than 1 km wide. The lagoon drains a hydrographic ...
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Matsas, George Emanuel Avraam; Silva, André Ricardo Rocha da
(2007)
We examine a nearly extreme macroscopic Reissner-Nordstrom black hole in the context of semiclassical gravity. The absorption rate associated with the quantum tunneling process of scalar particles whereby this black hole ...