Formalismo de Hamilton-Jacobi generalizado: teorias de campos com derivadas de ordem superior

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Uma contribuição ao estudo do ensino de educação física à distância

Pós-graduação em Desenvolvimento Humano e Tecnologias - IBRC

Campos espinoriais ELKO

Pós-graduação em Física - FEG

Os saberes docentes na prática pedagógica da educação física

Tendo como objetivo identificar as práticas pedagógicas que dão sustentação a Educação Física na escola buscou-se averiguar, nesse processo educativo, quais são os saberes que as fundamentam. Na busca dos dados utilizou-se como procedimentos metodológicos o estudo de natureza qualitativa do tipo descritivo exploratório, tendo no questionário o instrumento para a coleta de dados e na analise de conteúdo a apreciação dos resultados encontrados. Com relação aos saberes e a teoria que fundamentam a prática pedagógica dos participantes no estágio observou-se, nas descrições, de um lado a emergência do saber experiêncial neste contexto, trazendo subjacente a ele os saberes da formação embasados pelas disciplinas/matérias pedagógicas. Entretanto, por outro lado, a categoria genérico (no que diz respeito às teorias que fundamentam esta prática) apareceu como um registro no fato de que os participantes têm muita dificuldade em elucidar com clareza as teorias que lhes dão suporte. Embora reconheçam, genericamente, que são os conhecimentos do curso que os embasam em suas ações, como as abordagens de ensino, não apontaram de forma clara quais são denotando talvez um limite da licenciatura. Com relação ao saber da experiêncial não deixa de ser relevante este aspecto presente na prática pedagógica desse professor principiante, considerando se tratar que a socialização primária permeia a formação desse professor, podendo se dizer que há um saber prático do qual emana uma epistemologia de conhecimento em construção pautada numa racionalidade prática.

Comparação da aptidão física em idosos submetidos a diferentes intervenções de exercício físico

Introduction: The elderly population has increased, and the aging process is responsible for physical and metabolic changes in the body. For the elderly remain independent, with a better quality of life, preventing and treating diseases responsible for this increased of mortality should remain physically active. Objective: To investigate the influence of two types of exercise intervention on physical fitness and physical activity levels in older practitioners of Rio Claro-SP. Method: The study included 18 older adults with mean age 65.8 years (± 2.88) divided into two groups, Program in Physical Exercises Health Unit (PEFUS, n = 9) and Adapted Volleyball (n = 9). Classes of PEFUS were held twice a week lasting 60 min with strength, aerobic endurance, agility, coordination and balance exercises. Classes of Volleyball Adapted were performed 2 times per week lasting 120 minutes, divided into volleyball fundamental exercises and game. For evaluation of physical skills (strength, agility, coordination and flexibility), was performed the AAHPERD test battery. All participants were assessed at the baseline and after 3 months of interventions. The statistical analysis used was the repeated measures ANOVA, through the SPSS version 17.0 and significance level p <0.05. Result: After the interventions there was an increase of leisure time from 362.2 ± 214.9 min / week and 16.7 ± 28.3 min / week to 541.7 ± 137.2 and 44.4 ± 44.8 min / week to Adapted Volleyball and PEFUS, respectively. The variable coordination showed significant improvements after the interventions, decreasing from 12.1 ± 0.7 to 10.8 ± 0.5 sec for Volleyball Adapted and from 14.8 ± 0.9 to 12.1 ± 0, 9 sec for PEFUS (p <0.05). For the variable strength it was observed a group-moment interaction (p <0.05). Conclusion: The interventions showed positive results... (Complete abstract click electronic access below)

Efeitos de campos elétrico e magnético em um sistema dissipativo pulsante

The main idea of this work is to understand and analyze the dynamical aspects of the motion of a particle moving in the annular billiard, which corresponds to two circles of radius R and r (rdescribe the system by introducing breathing boundaries that transfer momentum to the particle. Likewise, the collisions with the circles are studied in the conservative (elastic) and dissipative (non-elastic) cases. When we introduce magnetic and electric fields, the particle is submitted to the Lorentz force. It also can suffer successive collisions with the breathing circles, winning or losing energy. For the elastic time-dependent case, we have already observed that a particle can gain unlimited energy. The purpose of this work is to study the effects of both external fields in the mean energy of the system, for the time-dependent case with and without dissipation. Our initial results conduct us to believe that electrical field can contribute to the increasing of mean energy, and a magnetic field applied to the vertical axis of coordinate (what guarantees the particle do not travel away the billiard’s plane) uses to arrest the particle to the whispering gallery orbits and do not contribute to the Fermi acceleration indeed. However, in presence of the electric field, to same values, the magnetic one together can improve this referred process, obtaining greater energy values to the same number of iterations. These results are applied to the concentric case, that was reported did not haven any significant energy gain on the free particle motion

Orientação sexual nas aulas de educação física escolar

Sexual Orientation is present in the school setting, due to human relationships among all belonging to this area. Being a cross-cutting theme, this theme pervades the Physical Education and allows discussions related to the gender, body and media, respect for diversity, disease prevention and other topics that the contents of body culture allow to deal. With observation and participation in the school context, through a stage of more than a year, we realized the need to address the issue of sexual orientation with students. In addition, there is a dearth of articles dealing with this topic, a factor that complicates and limits the search fields of material for the teacher preparing lessons and address the issue. Thus, this study aims to develop classes to subsidize the practice of teachers of physical education in relation to Sexual Orientation. The preparation of activities was carried out from a bibliographic review and experiences of the researchers, presenting new possibilities to teacher to treat this subject in classes of that discipline. The topics covered are intended to demystify some pre-concepts related to gender in bodily practices that are socially constructed. Also, presented a way to address STDs and teenage pregnancy, topics not found in academic magazines of the area used in this study. Treating Sexual Orientation in Physical Education classes may seem at first a tricky and of difficult data collection. The teacher must seek this knowledge so that it can address the issue with students in a transparent and really effective not being only informative classes meaningless or decontextualized thoughts

Caracterização dos reservatórios do grupo Macaé no Campo de Garoupa - Bacia de Campos - por meio de interpretação sísmica e perfis de poço

The study area is the Garoupa Field, located 75 km from the coast of Rio de Janeiro in bathymetric elevation of 125 m and it is the first important offshore discovery of the Campos Basin with hydrocarbon production in the Albian carbonates. The high significance of carbonate rock reservoirs for the global oil industry and its degree of complexity, combined with the fact that the Garoupa Field is a mature field, make this research project interesting to develop a re-exploratory vision of the study area. The objective of this paper is to characterize the physical properties of the Macae Group reservoirs in the Garoupa Field through well correlation techniques, petrophysical analysis and seismic interpretation (3D), in order to evaluate qualitatively and quantitatively the response of geophysical data to the presence of carbonate rock reservoirs. From the analysis of well profiles (gamma ray, resistivity, density and sonic) it was possible to identify six reservoir levels in the Quissamã Formation. As a result, the reservoirs have good correlation between the wells in the Garoupa Field and show lateral facies variation. In the seismic interpretation, structural contour maps were generated in time (ms) from the top of the Macae Group and two horizons that correspond to the reservoir levels. These maps show that the oil producing area of this field is a structural high located at the west of the interpreted seismic cube, and it was classified as a rollover limited by lateral faults forming a horst. The seismic attribute maps show a good response to the reservoirs of the Garoupa Field because they are associated with amplitude anomalies, verified by the correlation between the physical properties of the reservoir rock and seismic data through cross plots, with emphasis in a linear correlation between the resistivity profile and the values of Maximum Absolute Amplitude and RMS Amplitude attributes

Os segredos que a natureza encerra: uso de conceitos e modelos da física para investigar questões do mundo animal

Physics governs all working patterns of the universe and could not be otherwise in a biological environment. Living things depend directly on laws and physical models to compose their body structure, allow its survival in certain environments, communication between individuals and groups and also to establish a complex sensorial system that allows interaction with the environment that surrounds them. With the advancement of science and technology, new ideas are required, and thus, many researchers began to turn their attention to those systems found in nature, as these systems often present practical solutions and with maximum efficiency. This imitation of biological systems, applied in creating innovative technological resources, is called Biomimetics. To study the biological systems based on physical concepts is essential the creation of models. These allow the distinction of the effects of the issue really essential and may be ignored side effects that do not have an effective participation in the phenomenon being analyzed. In this Work Completion of course will be studied the phenomenon of countercurrent heat exchangers, present in various situations of nature, focusing on their participation in the legs of birds, also the balance of certain birds that are supported on one leg and possible inspiration of these phenomena in the fields of engineering. Also included are videos that allow better understanding of the studied subjects

Um estudo sobre teorias de dimensões extras: modelos de branas geradas por campos escalares

In this work we study extra dimensional theories, taking emphasis in braneworld models generated by real scalar fields. Firstly, we revise the Randall-Sundrum models and we discuss about some thick braneworld scenarios already considered in the literature. We introduce a new thick brane model in order to address the Standard Model hierarchy problem. Furthermore, we show that there exists a class of scalar fields models which are very interesting for analytical studies of thick brane scenarios. Finally, we analyze the braneworld consistency conditions in the context of f(R) and Brans-Dicke gravities, where we show that it is possible to evade a no-go theorem regarding thick brane scenarios

Aspectos quânticos e clássicos da instabilidade de campos fundamentais em espaços-tempos astrofísicos

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

Instrumentos antigos para o ensino de física: o tubo de Newton e seu uso no passado

O objetivo deste estudo é buscar compreender aspectos do trabalho experimental no ensino de Física no Brasil no passado, focalizando um instrumento antigo - o tubo de Newton. Considerando que a partir da Reforma Francisco Campos, em 1931, houve uma expansão do ensino secundário brasileiro e um aumento da presença de disciplinas científicas no currículo desse curso, examinamos as recomendações oficiais para o ensino de Física de 1931até 1961, quando foi promulgada a primeira Lei de Diretrizes e Bases da Educação Nacional. Procuramos investigar como o uso do tubo de Newton aparece em livros didáticos de Física para a educação secundária, editados em nosso país, no período delimitado. Em nossas conclusões consideramos que o conhecimento histórico pode ajudar a compreender aspectos relevantes a respeito do papel da experimentação no ensino de Física em nossos dias.

A gênese do habitus e a construção da hexis corporal de bailarinos e jogadoras de futebol e suas implicações nos diferentes campos de atuação

This paper aims to show the beginning of habitus and the bodily hexis construction of male ballet dancer and female player soccer. Firstly, the habitus and the bodily hexis are established by the cultural inheritance of families (advices, likes, choices, prohibitions, and work divisions). After, they are restructured by the most diverse fields where this people act, mainly in the school, specifically at Physical Education classes (in the specialized places where these classes occur). Thus, it is possible to verify the success or the failure of their path lives and the possibility of a social ascent by the choice of these practices as professional career.

Determinação das melhores condições de hidrólise física com ultrassom de potência em resíduos de amendoim

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