104 resultados para Singularities


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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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The work appeared before the process of articulation and curricular restructuring of Pedagogy courses conducted at the request of the Dean of undergraduate studies at UNESP. The documents surveyed pointed out that, although all courses obey the same laws, curriculum organization of each features singularities, where the course of pedagogy of Bauru (SP) is the only one which is distinguished by the presence of disciplines that work with the issue of technologies. Thus, we have as objectives: to analyze a proposal of curricular use of distance education; map of the curricula of pedagogy of UNESP with respect to technologies; Verify there is possibility of use of a virtual learning scenario in teachers ' initial formation. Thus, there was a didactic experience of use of distance education, which happened in 2010, 2011 and 2012, with students of the first and third year of the course. Were job steps: 1) literature review; 2) study of official documents of the courses of pedagogy of UNESP; 3) elaboration and execution of a didactic proposal of virtual learning environment; 4) description and categorization of data; 5) analysis and interpretation of results. We conclude that there is a need for reorganization of curriculum Pedagogy courses on the use of technologies and virtual learning environments are theoretical and practical articulation opportunities.

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Pós-graduação em Educação - FCT

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The dynamics of the rotation of a satellite is an old and classical problem, specially in the Euler formalism. However, with these variables, even in torque free motion problem, the integrability of the system is far from trivial, mainly when the three moments of the inertia are not equal. Another disadvantage occurs when the inclinations between some plans are null or close to zero, so the nodes become undetermined. In this work, we propose the use of modern Andoyer's variables. These are a set of canonical variables and therefore some significant advantages can be obtained when dealing with perturbation methods. On other the hand, the integrability of the torque free motion becomes very clear, as the system is reduced to a problem of one degree of freedom. The elimination of the singularities mentioned above, can be solved very easily, with Pincaré-type variables. In this work we give the background concepts of the Andoyer's variables and the disturbing potential is obtained for the rotational dynamics of a satellite perturbed by a planet. In the case when A = B (moments of inertia) and due to the current variables, the averaged system is trivially obtained through very simple integrations

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Pós-graduação em Física - IFT

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Pós-graduação em Física - IFT

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)