Dynamical Analysis
Mostrando 25-36 de 177 artigos, teses e dissertações.
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25. El estudio y enseñanza de los modos vibracionales de la molécula triatómica
This work shows that by means of knowledge of the general theory of small oscillations is possible to solve analytically the vibrational modes of the triangular molecule, and from comparative results between the linear and triangular molecule can access the dynamics of the triangular molecule and simplify the analysis. To illustrate this, is modeled mechanic
Revista Brasileira de Ensino de Física. Publicado em: 2011-03
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26. Análise dinâmica de rolamentos de esfera / Dynamic analysis of ball bearing
Ball bearings are simple machine elements but largely used in several applications involving high velocities, high temperatures and different loads. The load model is fundamental for the ball bearing s dynamic and for this reason it is necessary to define with accuracy the mechanisms performance using analytical methods. The objective of this thesis is to an
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/08/2010
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27. Análise cinemática, dinâmica, de vibração e de tensão em motores de combustão interna com virabrequim e bielas flexíveis / Kinematical, dynamical, vibration and stress analysis of internal combustion engines with flexible crankshaft and connecting-rod
Este trabalho trata da análise cinemática, dinâmica, de vibração e de tensão de um motor de combustão interna (MCI) com componentes flexíveis (virabrequim e biela), obtendo-se assim o comportamento mecânico do motor, em especial do virabrequim e da biela. Deseja-se determinar tal comportamento para o MCI funcionando com velocidade constante e passan
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/08/2010
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28. Suffering and pleasure in artistic dance work / Sofrimento e prazer no trabalho artístico em dança
The objective of this master dissertation was to analyse the relation between dancer worker and the dances work organization based on psychodynamique of work theory. For this, was developed a study case about Balé da Cidade de São Paulo (BCSP), public dance company, which belongs to Theatro Municipal de São Paulo (city theater). The research procedures we
Publicado em: 2010
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29. Controle de caos e saltos entre atratores em um sistema com impactos / Control of caos and basin hopping in a system with impacts
For a mechanical system, described by the impact-pair model, we studied the control of chaos by a parametric perturbation and the basin-hopping phenomeno. For this nonintegrable system, we obtained numerically the evolution of its dynamical variables for a large set of initial conditions and control parameters. For this analysis, we used phase planes, Poinca
Publicado em: 2010
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30. Transição quântico-clássica em sistemas com propensão coletiva / Quantum-to-classical transition in systems with collective propensity
In this thesis, we studied the behavior of quantum systems which in the classical limit may exhibit either regular or chaotic behavior. Our study was based on the dynamical characterization of the, chaotic or regular, behavior of these systems in the classical limit through the analysis of the structure of phase-space distributions functions. Particularly, w
Publicado em: 2010
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31. Estudo da dinâmica de acréscimo e perda de massa na estrela T Tauri clássica V354 Mon.
The main goal of this work is to characterize the mass accretion and ejection processes of the classical T Tauri star V354 Mon, a member of the young stellar cluster NGC 2264. In March 2008, photometric and spectroscopic observations of this object were obtained simultaneously with the CoRoT satellite, the SOPHIE échelle spectrograph at the Observatoire de
Publicado em: 2010
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32. Estudo do desempenho do processo de microfiltração tangencial com membranas cerâmicas aplicado à retenção de bactérias e redução de sólidos suspensos de uma bebida à base de açaí / Performance study of the crossflow microfiltration process with ceramic membranes applied to the bacteria retention and suspended solids reduction of the beverage based on açai
In this doctoral research, the crossflow microfiltration process utilizing ceramic membranes was investigated aiming at the bacteria retention (Escherichia coli) and reduction of suspended solids of beverage based on açai (Euterpe oleracea Mart.). The selected commercial membranes of alfa-alumina (AL IND.2O IND.3) had nominal pore sizes of 0.8 and 1.2 müm
Publicado em: 2010
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33. A humanização no parto e no nascimento: os saberes e as práticas no contexto de uma maternidade pública brasileira
The practice of medicine related to the gestational processes tend to be organized according to the context and the place of work, being thus dependent of the conditions both social and economical, and of the physical structure and the functionality of the services. The high mortality rate in this process has diminished, since 1986, the study made by the Wor
Publicado em: 2010
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34. Integrating production and perception of secundary prominences in a dynamical perspective of rhythm / Integrando produção e percepção de proeminencias secundarias numa abordagem dinamica do ritmo da fala
The thesis investigates two main subjects: secondary stress in Brazilian Portuguese (BP) and the link between rhythm production and rhythm perception. Both subject matters are developed in light of Barbosa s (2006, 2007) coupled-oscillator model of rhythm production. Interest in secondary stress in BP is fostered by the fact that its existence, nature and di
Publicado em: 2010
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35. Termodinâmica de sistemas fullerênicos em soluções / Thermodynamic systems fullerenic solutions
In this work, we present a computational study of the solvation process of the C60 fullerene and its hydroxylated derivate, the fullerenol C60(OH)24, in aqueous environment and organic solvents, using classical molecular dynamics simulations. Diverse sets of parameters to the Lennard-Jones interaction potential have been utilized in simulations of fullerenes
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/09/2009
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36. Análise de fadiga em pontes rodoviárias de concreto armado / Fatigue analysis of reinforced concrete road bridges
As pontes rodoviárias de concreto armado estão sujeitas às ações dinâmicas variáveis devido ao tráfego de veículos sobre o tabuleiro. Estas ações dinâmicas podem gerar o surgimento das fraturas ou mesmo a sua propagação na estrutura. A correta consideração destes aspectos objetivou o desenvolvimento de um estudo, de forma a avaliar os esforç
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/08/2009