Virtual Physical Model
Mostrando 13-24 de 37 artigos, teses e dissertações.
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13. Dipole scattering amplitude in momentum space: investigating fluctuations at HERA
We extend a recently proposed dipole model which relates the virtual photon-proton cross section to the dipole-proton forward scattering amplitude in momentum space investigating the effects of the gluon number fluctuations. The model interpolates between well known asymptotic behaviours predicted by perturbative QCD from the Balitsky-Kovchegov equation, whi
Brazilian Journal of Physics. Publicado em: 2008-09
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14. Geração de trajetórias para veículos aéreos autônomos não-tripulados
In this work a study on the problem of the trajectory generation for unmanned aerial vehicles is carried through. The main objective is to provide tools of path planning for aerial robots, taking into account some of its main physical constraints of movement. For this, some of the more used techniques for motion planning of grounded robots are argued initial
Publicado em: 2008
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15. Modelagem matemática de interação fluido-estrutura utilizando o método da fronteira imersa / Mathematical Modeling of Fluid-Structure Interaction by Using the Immersed Boundary Method
Os problemas práticos de engenharia que envolvem a presença de escoamentos incompressíveis em torno de corpos rombudos são considerados os mais estudados. Os corpos rombudos sofrem carregamentos fluidodinâmicos causados pela geração de vórtices, que induzem o movimento oscilatório dos mesmos. A vibração induzida por vórtices tem sido objeto de es
Publicado em: 2008
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16. Uma alternativa a inundação baseada em tabelas de dispersão para planos de controle de redes opticas / A hash table based flooding alternative for optical networks control plane
The transport layer structure of the Internet is moving towards a model of highspeed routers interconnected by intelligent optical core networks. A consensus has been reached on wavelength division multiplexing (WDM) as the way to increase the transmission capacity. However there are few proposals for distributed control planes under dynamic Quality of Servi
Publicado em: 2008
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17. Evaluation of learner profile based on contextual interactions to adaptation of learning scenarios. / Avaliação do perfil do aluno baseado em interações contextualizadas para adaptação de cenários de aprendizagem.
The identification of characteristics of a given student that are important during the teachinglearning process has been the focus of numerous studies in recent years. Teachers, coordinators and pedagogues have defended the notion that each individual presents particular and important characteristics in the developing knowledge process. The need to adapt tea
Publicado em: 2008
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18. Numerical simulation of two-dimensional complex flows around bluff bodies using the immersed boundary method
This paper presents a two-dimensional numerical simulation of flows around different bluff bodies, at Re = 100 and 200, using the Immersed Boundary (IB) method, as a sequence of a previous work. The force density term required by the IB method is obtained with the Virtual Physical Model (VPM). Simulations were carried out for two circular cylinders of differ
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2007-12
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19. Mathematical modeling and numerical simulation of incompressible flows over complexes three-dimensional geometries using the immersed boundary method / Modelagem matemática e simulação numérica de escoamentos incompressíveis sobre geometrias complexas tridimensionais utilizando o método da fronteira imersa
The necessity of understand the physical mechanisms in flows over complexes geometries are something imperative on modern engineering. In this way, tools that allow the analysis and understanding of such flows are very important as well. In this work, a numerical tool that allows the transient analysis of flows over several types of complexes three-dimension
Publicado em: 2007
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20. Mathematical modeling and numerical simulation of incompressible flows over complexes three-dimensional geometries using the immersed boundary method / Modelagem matemÃtica e simulaÃÃo numÃrica de escoamentos incompressÃveis sobre geometrias complexas tridimensionais utilizando o mÃtodo da fronteira imersa
The necessity of understand the physical mechanisms in flows over complexes geometries are something imperative on modern engineering. In this way, tools that allow the analysis and understanding of such flows are very important as well. In this work, a numerical tool that allows the transient analysis of flows over several types of complexes three-dimension
Publicado em: 2007
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21. Computer facial animation based on biomechanical modeling / Animação facial por computador baseada em modelagem biomecanica
The increasing search for realism in virtual characters found in many applications as movies, education, games, so on, is the motivation ofthis thesis. The thesis describes an animation model that employs the biomechanics strategy for the development of a computing prototype, called SABiom. The method used is based on simulation of physical features of the h
Publicado em: 2007
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22. Controle inteligente do caminhar de robôs móveis simulados
The main goal of this dissertation is to propose, to test and to evaluate the use of Machine Learning (ML) techniques in the automatic con_guration of the gait control in legged robots. In order to achieve this goal, an extensive research about state-of-the-art techniques was accomplished and they are described in this work. This research allowed the develop
Publicado em: 2007
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23. Correlation study of spot welded specimensbehavior using element method. / Estudo de correlação do comportamento de pontos de solda em corpos de prova pelo método dos elementos finitos.
Resistance spot welding is the most common jointing process of parts used in automotive industry. Several methods to represent spot welds are available, and the purpose of this work is to compare two different methods of spot weld modeling through a correlation study, taking into consideration the maximum force withstood by the welded joint, between virtual
Publicado em: 2007
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24. Econometric analysis of the factor total productivity in Amazonia Legal, 1990-2004 / Análise econométrica da produtividade total dos fatores na Amazônia Legal, 1990-2004
The economic performance of Amazonia Legal and its states is evaluated based on total-factor productivity (TFP) measures obtained by the use of the exogenous growth model formulated by Solow (1956) and by the expanded human capital model proposed by Mankiw et al. (1992). The economic variables taken as proxy of the physical (synthetic quantitative index), hu
Publicado em: 2007