Dynamical Simulation
Mostrando 13-24 de 69 artigos, teses e dissertações.
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13. Dinamica populacional do sistema imune aplicada ao sararmpo / Population dynamics of the immune system applied to measles
This work is a study of the interaction between the measles virus and the human immune system from the point of view of the population dynamics. Dynamical systems of first order non linear ordinary differential equations are used to model this population dynamics. Because of the fact that it is possible to observe two different and quite distinct moments in
Publicado em: 2010
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14. Nanorolos de nitreto de boro : um estudo por dinamica molecular classica / Boron nitride nanoscrolls : a classical molecular dynamics study
In this work we report a study about the structural and dynamical properties of boron nitride nanoscrolls (BNNSs). BNNSs are nanostructures formed by rolling up boron nitride (BN) sheets into a spiral(papyrus)-like format. Although carbon nanoscrolls (CNSs) have been observed experimentally synthesized using different techniques, up to this moment no experim
Publicado em: 2010
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15. Verificação à fadiga de pontes rodoviárias mistas (aço-concreto) / Fatigue analysis of composite highway bridges
Steel and composite highway bridges (steel-concrete) are currently subjected to dynamic actions, for example, variable magnitude due to vehicles traffic on the deck rough pavement. These dynamic actions can generate the fractures nucleation or even their propagation on the structure. The correct consideration of these aspects pointed out to an analysis metho
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/03/2009
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16. Integrated design & control of a buck boost converter
This paper presents the integrated design and control of a buck boost converter (BBC). In the proposed methodology the design tool provides simultaneously the controller tuning and BBC design parameters in such a way that some closed-loop pre-specified static and dynamic behavior is obtained. This approach contrasts with the traditional methodology, where th
Sba: Controle & Automação Sociedade Brasileira de Automatica. Publicado em: 2009-09
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17. Sistemas eletrônicos em duas dimensões : desordem e resposta dinâmica
In disordered systems the pinning strength on the carriers due to impurities or defects is one of the most important mechanisms that produce insulator behavior. A transition to a metal phase should occur if a driving field is applied to the system. In the last three decades, such transition in two-dimensional systems has attracted much attention in light of
Publicado em: 2009
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18. Eletrocatálise utilizando líquidos iônicos e consumo químico de óxidos / Electrocatalysis using ionic liquids and chemical comsumption of platinum oxides
This dissertation is divided on two parts. The first one deals with fundamental electrochemistry employing an ionic liquid as supporting electrolyte and as a subject of study by itself. Phenomena like the anodic and cathodic stability of the liquid, emphasizing its degradation mechanism is presented. It is also shown a study of the electrocatalytic oxidation
Publicado em: 2009
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19. Estudo de tecnicas de controle H-infinito para estruturas flexiveis com intercentezas / A study on H-inifinity control techniques for uncertain flexible structures
This dissertation deals with modern techniques from the Robust H? Control of Linear Dynamic Systems. By this it is meant that the results from linear control systems theory are used as mathemathical tools when considering several kinds of uncertainty on the models. These models are mostly of flexible structures and the design methods are implemented using so
Publicado em: 2008
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20. Structural behavior of tower stell to support a wind turbine / Comportamento estrutural de torres de aço para suporte de turbinas eólicas
The increasing demand for electricity required by individual and industrial consumers brings back the issues related to the exhaustion of the exiting fossil energy sources and leads to the evident needs for investments in research topics that focus on improving, developing available renew able energy sources or even creating some novel energy renewable alter
Publicado em: 2008
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21. Simulação do clima do último máximo glacial: um experimento com um modelo estatístico - dinâmico / Simulation of the last glacial maximum climate: a experiment with a statistical-dynamical model
A statistical - dynamical zonally averaged model of primitive equations was used to evaluate the capacity of the model in simulating the zonally averaged climate of the Last Glacial Maximum (LGM), studying the relative importance of the climate forcing in the LGM climate and to diagnosis the monsoon circulation in the LGM. The simulation of the LGM resulted
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/05/2007
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22. Open charm tomography of cold and hot nuclear matter
We identify the nuclear effects that modify the cross sections for open heavy flavor production in proton-nucleus and nucleus-nucleus collisions. In p+A reactions, we calculate and resum the coherent nuclear-enhanced power corrections from the final-state parton scattering in the medium. We find that single and double inclusive open charm production can be s
Braz. J. Phys.. Publicado em: 2007-06
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23. Structural and dynamical properties of a quasi-onedimensional classical binary system / Estudo das propriedades estruturais e dinÃmicas de um sistema binÃrio quasi-unidimensional.
The aim of this work is to study the structural and dynamical properties of a classical binary system of charged particles confined in a two dimensional channel. Such a system is described in the literature as quasi-unidimensional, and its relevance is supported by the possibility of technological applications, shown recently in the scientific literature, an
Publicado em: 2007
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24. Simulation of the last glacial maximum climate: a experiment with a statistical-dynamical model / Simulação do clima do último máximo glacial: um experimento com um modelo estatístico - dinâmico
Um modelo estatístico - dinâmico média zonal de equações primitivas foi utilizado para avaliar a capacidade do modelo em simular o clima médio zonal do Último Máximo Glacial (UMG), estudar a importância relativa das forçantes climáticas no clima do UMG e diagnosticar a circulação monçonica no UMG. A simulação do UMG resultou em um resfriament
Publicado em: 2007