Implicit Techniques
Mostrando 1-12 de 40 artigos, teses e dissertações.
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1. Signed distance function implicit geologic modeling
Abstract Prior to every geostatistical estimation or simulation study there is a need for delimiting the geologic domains of the deposit, which is traditionally done manually by a geomodeler in a laborious, time consuming and subjective process. For this reason, novel techniques referred to as implicit modelling have appeared. These techniques provide algori
REM, Int. Eng. J.. Publicado em: 2017-06
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2. Study of Conservation on Implicit Techniques for Unstructured Finite Volume Navier-Stokes Solvers
ABSTRACT: The work is a study of conservation on linearization techniques of time-marching schemes for the unstructured finite volume Reynolds-averaged Navier-Stokes formulation. The solver used in this work calculates the numerical flux applying an upwind discretization based on the flux vector splitting scheme. This numerical treatment results in a very la
J. Aerosp. Technol. Manag.. Publicado em: 2014-09
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3. Decomposition approach for generation and transmission expansion planning with implicit multipliers evaluation
In an electric power systems planning framework, decomposition techniques are usually applied to separate investment and operation subproblems to take benefits from the use of independent solution algorithms. Real power systems planning problems can be rather complex and their detailed representation often leads to greater effort to solve the operation subpr
Pesqui. Oper.. Publicado em: 08/11/2013
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4. Solução de auxílio ao diagnóstico e à pesquisa médica baseada em mineração de dados utilizando interface android
Since the primary studies on the applications of Information Technology aiming to add value to other areas of knowledge, the playing eld of medicine has always been seen as fertile ground for such. With the advent of Arti cial Intelligence techniques, computer programs have been given a power of learning more sophisticated and thus opening the possibility of
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/11/2012
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5. Técnica de realidade virtual para manipulação e deformação de superfícies NURBS
The Virtual Reality (VR) mainly deals with the creation of three-dimensional environments generated in real time and made available for multisensory interaction with different devices. A high processing capacity and modeling environments is required for applications of this nature. These applications currently extend to various productive sectors such as ind
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/10/2012
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6. Simulação computacional de escoamentos reativos com baixo número Mach aplicando técnicas de refinamento adaptativo de malhas / Computational simulation of low Mach number reacting flows applying adaptive mesh refinement techniques.
It is the main goal of the present work to extend a numerical methodology based on both the use of an adaptive mesh refinement technique (AMR) and the use of a multistep, implicit-explicit time-step strategy (IMEX) to applications involving low Mach number reactive flows. Originally developed for incompressible flows, the Eulerian formulation of that methodo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/06/2012
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7. Fuzzy Clustering: application on organizational metaphors in Brazilian companies
Different theories of organization and management are based on implicit images or metaphors. Nevertheless, a quantitative approach is needed to minimize human subjectivity or bias on metaphors studies. Hence, this paper analyzed the presence of metaphors and clustered them using fuzzy data mining techniques in a sample of 61 Brazilian companies that operate
JISTEM J.Inf.Syst. Technol. Manag.. Publicado em: 2012-08
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8. Integração numérica de sistemas não lineares semi-implícitos via teoria de controle geométrico / Numerical integration of non-linear semi-implicit square systems via geometric control theory.
This work improves a method to approximate solutions for a class of differential algebraic equations (DAEs), known as systems semi-implicit square. The method, called here MII, is based on geometric theory of decoupling for nonlinear systems combined with efficient techniques numerical analysis. It uses an algorithum that mixes symbolic and numerical calcula
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/11/2011
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9. O uso da educação online como alternativa para os programas de pós-graduação stricto sensu no Brasil. / The use of the education online as alternative for the after-graduation programs stricto sensu in Brazil.
So that a nation can be considered as developed, one of the major targets of its government should be the constant investments in education over the time. In Brazil, a country with continental dimensions, the offer of education for everybody is not an easy task at all. The successive governments in this country have put into practice several measures in all
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/08/2011
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10. A CRISE FINANCEIRA DE 2008 E SEUS IMPACTOS NOS SETORES DA ECONOMIA BRASILEIRA: UMA ABORDAGEM POR REGRESSÃES QUANTÃLICAS E TEORIA DE PORTFÃLIO / THE FINANCIAL CRISIS OF 2008 AND ITS IMPACT ON THE SECTORS OF THE BRAZILIAN ECONOMY: AN APPROACH quantile regressions AND PORTFOLIO THEORY
This study applies traditional techniques in Finance and Econometrics in order to analyze the impacts of Financial Crisis on some sectors of the Brazilian economy based upon market indicators provided by Getulio Vargas Foundation (FGV). Initially we apply the theory proposed by Markowitz to sectoral indicators for eight economic sectors and estimate efficien
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2011
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11. Mimetic finite difference methods in image processing
We introduce the use of mimetic methods to the imaging community, for the solution of the initial-value problems ubiquitous in the machine vision and image processing and analysis fields. PDE-based image processing and analysis techniques comprise a host of applications such as noise removal and restoration, deblurring and enhancement, segmentation, edge det
Computational & Applied Mathematics. Publicado em: 2011
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12. Desenvolvimento de uma abordagem para docking proteína ligante por meio de algoritmos genéticos e modos normais / Development of an approach to ligand docking protein through genetic algorithms and normal modes
The molecular recognition process is important to the life and it is present in different cellular mechanisms. The activity of several molecular processes depends on molecules (ligands) that recognize specific bonding sites (receptors) and binds to them. The processes of molecular recognition are very important for the drug development. Molecular Docking is
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/09/2010