248 resultados para Teoria de campos (Física)


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This article examines philosophical and anthropological underpinnings of the Sich-Bewegen Theory, based on the phenomenological philosophy by Merleau-Ponty and social anthropology by Mauss and Geertz. It also considers implications for Physical Education Elementary and High School curricula aimed at forming emancipated, autonomous and critical individuals, taking the Physical Education Curriculum of the State of Sao Paulo as example. It concludes that the curriculum needs to imbricate into students'social life and take into account the challenges and issues from contemporary society.

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The objective of the present work was to study the control of the dynamics of diatomic heteronuclear molecules interacting with electric fields created by lasers. Specifically in this work, the molecular photoassociation phenomenon will be analyzed. At this phenomenon, the atom's relative movement is described by a particle that moves in a morse potential well under the influence of an external time dependant force related to the external field. Based on the optimum control theory (OCT), it is presented at the present work laser pulses that alternate a given initial molecular state to a desirable end state, wich in this work was represented by the minimization of a cost functional that indicates how close. To do so, a computational sistem know as Genetic Algorithm (GA) was developed that can be characterizes as an extremelly eficient technique capable of scanning the solutions space and find results close to the optimum solutions

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Pós-graduação em Física - IFT

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Based on the assumption that the exchange of knowledge can support a process of self-organized interactions of the involved in the process, we present the results of a study about how happen the dialogue between physics teachers involved in a group of study of Modern and Contemporary Physics. With the support of the propositions of Bakhtin about the potential of the discourse and discursive interactions studies, we identified interesting regularities in how organize discussions among teachers, identifying a scheme that allows us to infer the effectiveness of the enforcement of this form of lead and mediate the discussions in groups of continuous formation of physics teachers to other topics, as well as adding arguments in defense of the groups of discussion as a strategy for continuing formation of teachers.

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O Teorema de Poincaré-Bendixson é um resultado muito importante no estudo de Sistemas Dinâmicos, pois ele estabelece para quais tipos de conjunto limite as trajetórias de um campo de vetores em IR2 deve convergir. Neste trabalho vamos abordar a Funç˜ao do primeiro Retorno de Poincaré, além de discutir a estabilidade de Ciclos Limites e provar o Teorema de Poincaré-Bendixson.

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The lack of interest and motivation, and the self-exclusion from Physical Education classes by Secondary and High School students is pointed out in the specific literature as a pedagogical problem for that discipline. Most studies dealing with the issue present only descriptive data, gathered from the quantification of responses given by students to questionnaires, and they lack a more consistent theoretical framework for both the generation of data as to its interpretation. The objectives of this article are: (i) to present an overview of published studies that address the perspectives of students in relation to their Physical Education classes at school, in terms of attitudes, opinions, tastes, motivation, and development; and (ii) to propose theoretical foundation and methodological guidelines for one future field based research that allows better understanding on how Secondary and High School students’ relationship to school Physical Education knowledge occurs, in order to contribute for advances regarding the results and conclusions on such thematics. We suggest that the definition of the research problem, the generation and interpretation of the data must take as reference the "theory of the notion of the relationship to knowledge", by Bernard Charlot, for whom the school knowledge must be understood in its relations with learning beings. The methodological direction should be guided by "qualitative research" general parameters in Education, using questionnaires and semi-structured interviews with students. Hopefully, in this way, indicators informed by research might contribute to improving the quality of teaching in lessons, in order to provide the students with opportunities for meaningful learning.

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In the region of Badejo oil Ffeld (Campos Basin) lies an Lower Albian dolomitic layer that shows reservoir rock and seal conditions, among others and, it is occasionally karstified. This work applies geostatistical techniques of ordinary and indicatior kriging, in an attempt to determine a method that assists the analysis of different scenarios offered for petroleum drilling from a quantitative point of view this fact is justified, because there are different visions and strategies that would be adopted under different dolomite conditions (stable - low porosity and high density; reservoir - high porosity and medium density; instable - high porosity and low dentisty). The main objective is a methodological introduction that has not been tested in dolomites before aiming to characterize the distribution of the three conditions described above by ordinary and indicatior kriging, which was based on the obtained data from the dolomite layer identification through well logs interpretation and correlation, followed by seismic interpretation. In addition, it was generated structural contour maps, based on 2D and 3D seismic data interpretation, and then, seismic attributes maps were calculated, in order to transform them into pseudo-density maps, i.e., maps that correlate the density values with the attribute values. As primary results, structural contour maps and seismic attributes were obtained and ordinary and indicatior kriging maps were done, on which it is possible to interpret the distribution of the main reservoir and risk probability for drilling of exploration wells obtaining trends N35E and N10W direction for areas of stability or reservoir levels, while the central part of the map presents a higher risk for loss of drilling fluid. The cut-off values levels were based on the values of first and third quartiles of cumulative histogram (instable and stable zones, respectively), as well as the reservoir level was set as the interval...

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Pós-graduação em Física - IFT

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Objectives: To analyze different physical activities domains in healthy adults and correlate with cardiovascular risk factors. Methods: The sample was composed by 32 Physical Education undergraduate students, with mean age of 22.6 years old. Adiposity was assessed by waist circumference (WC), body mass index (BMI) and bioelectrical impedance. Additionally, fast glucose (10-12 hours), systolic (SBP) and diastolic (DBP) blood pressure were assessed. Physical activity level was assessed by questionnaire (Baecke et al., 1982). Results: sports activities and leisure time were not related with cardiovascular risk factors. However, job activities were negatively related with %BF, SBP and DBP. Conclusion: Different physical activity domains should be considered when analyzing its associations with health indicators.

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Os processos históricos que permeiam as diretrizes curriculares possibilitaram enxergar quais são as idéias e as preocupações para com a formação de professores no âmbito da Educação Física. Dentro desse contexto, o objetivo foi averiguar, nas políticas públicas de formação de professor dessa disciplina, como ocorreu o processo de qualificação e certificação, buscando entender as justificativas que orientaram a regulamentação dos normativos legais de 1939 a 2004. Portanto, trata-se de um estudo descritivo, de análise qualitativa, tendo como fonte primária as Diretrizes Curriculares veiculada pela imprensa oficial. As novas Diretrizes Curriculares (Resoluções CNE/CP 01/2002, 02/2002 e 7/2004) apontaram perspectivas na formação de um professor mais qualificado para o seu campo de atuação, priorizando a questão da dimensão política da profissão, das competências e do corpo de conhecimento da área. Embora haja progressos em relação aos normativos anteriores, chama-se atenção para a necessidade de que as propostas em construção façam a mediação entre a proposta atual, o percurso histórico do próprio curso e a relação teoria-prática, visando o equilíbrio na formação. A proposta das novas diretrizes não deixa de evidenciar avanços significativos no horizonte da profissionalidade docente e da identidade profissional docente. da mesma forma, para o leitor ou estudioso atento, não deixa de causar preocupação o excesso de competências técnicas colocadas, passando-se a impressão de que agora o que vale é o primado do saber fazer.

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In this research, characterized as a qualitative study, we aimed to analyze the Job Profiles, Objectives and Curriculum Flows specified in Pedagogical Projects of the undergraduate Courses of Physical Education of public, state and federal universities, in the São Paulo state. We also analyzed their articulations and adequacy to the Institutional Pedagogical Project and Institutional Development Plan. The latest Resolutions of Physical Education in Higher Education and conceptualizations of the Pedagogical Project of Course are presented. The method of approach is current History. There was a documental research in order to analyze the official documents. A limited offering of public courses when compared to private institutions was verified and also, there was a greater offering of bachelor degree courses (expanded and generalized formation) concerning health, sport and leisure fields. Courses defined specifically for teachers' formation and educational gap between the pedagogical discourses and the curriculum structures were also presented. In conclusion, this research indicates the necessity of a change in the curricular mentality in order to implement the pedagogical discourses of courses.

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Há mais de cinqüenta anos, existe a preocupação em se definir os objetivos para o laboratório didático, revisando currículos e buscando ações mais localizadas e orientadas de acordo com o avanço crescente de conhecimentos das concepções alternativas de vários tópicos da Física por parte dos alunos, levando-se em conta as dificuldades específicas enfrentadas por eles no processo ensino-aprendizagem. Podem-se identificar duas linhas filosóficas que norteiam o processo ensino-aprendizagem com relação aos objetivos do laboratório didático. Uma linha defende que para sedimentar os conceitos expostos em aulas teóricas é necessária a prática em laboratório. A outra linha defende que o alvo da prática em laboratório deveria ser a obtenção e análise de dados, levando-se em conta a teoria aprendida. Atualmente, se percebe um crescimento por parte de profissionais que entendem haver uma necessidade de planejar, definir e hierarquizar objetivos detalhados, além de propiciar atividades que favoreçam de acordo com cada classe dentro da linha filosófica a que se identifica o profissional, não se esquecendo que ainda existem profissionais que não aceitam essa postura. Dentro desta perspectiva, foi aplicado um questionário a trinta alunos do curso de Licenciatura em Física da UNESP-Bauru, que já cursaram as cinco disciplinas práticas básicas do curso. Os alunos pontuaram de acordo com a sua visão dos objetivos reais frente aos objetivos ideais do laboratório didático. Os resultados mostraram que o laboratório didático vem cumprindo seu papel na opinião dos alunos do curso de Licenciatura em Física.