1000 resultados para Equações diferenciais ordinarias - Estudo e ensino


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Pós-graduação em Matemática em Rede Nacional - IBILCE

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Pós-graduação em Matematica Aplicada e Computacional - FCT

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This work is a study and a repost on a possible way that can be worked together Mathematics and Native Language, presenting activities for the middle school, trying to make teaching more interesting, dynamic and playful. The work presents proposal for activities based on stories from the book “O Homem que calculava” by Malba Tahan, with questionnaires to be answered by the students and guidance for teachers on how to apply these activities in the classroom. Applications of these activities were carried out and this work also includes analysis and records of them

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Synchronization in nonlinear dynamical systems, especially in chaotic systems, is field of research in several areas of knowledge, such as Mechanical Engineering and Electrical Engineering, Biology, Physics, among others. In simple terms, two systems are synchronized if after a certain time, they have similar behavior or occurring at the same time. The sound and image in a film is an example of this phenomenon in our daily lives. The studies of synchronization include studies of continuous dynamic systems, governed by differential equations or studies of discrete time dynamical systems, also called maps. Maps correspond, in general, discretizations of differential equations and are widely used to model physical systems, mainly due to its ease of computational. It is enough to make iterations from given initial conditions for knowing the trajectories of system. This completion of course work based on the study of the map called ”Zaslavksy Web Map”. The Zaslavksy Web Map is a result of the combination of the movements of a particle in a constant magnetic field and a wave electrostatic propagating perpendicular to the magnetic field. Apart from interest in the particularities of this map, there was objective the deepening of concepts of nonlinear dynamics, as equilibrium points, linear stability, stability non-linear, bifurcation and chaos

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Even today tables are used in the calculation of structures formed by flat elements, these methods are acceptable only for a limited number of cases, but even so, in some situations, tables are used. With time some methods of differential equations resolutions were emerging and accepted as the most effective solution. Today, with the advancement in technology, there are already some programs able to solve more complex problems in less time using these methods. Aiming to optimize time and better understand the physical behavior of plates, this work presents the theory of plate, the Boundary Element Method (BEM) applied to solve problems of plates (slabs) with various boundary conditions and load through the program Placas2 (TAGUTI, Y.-2010) in Fortran language

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Esta pesquisa analisa a concepção do corpo a partir dos aspectos que explicitam suas implicações sobre as metodologias empregadas nas práticas de ensino em estudos biológicos como, por exemplo, a vivissecção, bem como sobre os efeitos observados nos corpos dos estudantes. Nossa pesquisa delimita o seu objeto de estudo em um recorte que considera a dinâmica de constituição do corpo em sua dimensão material, esta que se assenta nas condições biológicas do existir humano. Propusemos outra passagem pelo trânsito de territórios nos quais os nossos corpos se investem de simbolismo e de elementos oriundos do universo cultural. Esta passagem na metodologia da análise implica nossa condição de pesquisadores situados na fronteira que se desenha entre os estudos da Biologia, Filosofia e Psicanálise. Consideramos o corpo em sua constituição, mas analisamos os modos como esta base material vem sendo tratada nos processos de subjetivação da sociedade contemporânea. Assim, nosso recorte incide sobre o corpo que se faz no espaço que cada sujeito abre para as relações com a alteridade. Acrescentamos que ao optarmos pelo estudo sobre políticas de subjetivação a partir de suas implicações corporais, observamos o cuidado com este corpo que padece, não somente por um aspecto físico, compreendido como participante da ecologia da natureza, mas também como aquele que sustenta os sentimentos, emoções, compreendido como a ecologia dos ambientes grupais e o aspecto da constituição de si, compreendido como a ecologia do ambiente subjetivo.

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This study presents the results of a study on the development of the concept of force and their possible applications in physics teaching. The historical study has focused on Aristotelian natural philosophy, medieval theories of strength in impressed and on classical Newtonian mechanics. The Newtonian concept of force was also an object lesson of physics analyzed in this study. In this lesson, conducted in a preuniversity course, spontaneous conceptions or alternative conceptions of students about the concept of force proved very entrenched, resulting in studies on the Model Change on Conceptual and epistemological obstacles in view Bachelardian. The theoretical frameworks adopted led us to trace parallels between spontaneous conceptions revealed by the students and some views about the concept of force found in the study of history. The results show that while some old conceptions have been replaced by scientifically Newtonian concept of force, they are still present in the students' ideas and resist to changes even after the study of Newton's laws. Like main result shows that the history of science can be a great ally for the deconstruction of alternative conceptions, particularly when these concepts were previously presented and overcome the course of history of the development of a concept

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This study shows new alternatives to the teaching of chemistry in high school and wants to be an aid to the teacher at the time of the planning of lessons and a way to help students improve their performance in this discipline. The central issue is the exploration of differentiated teaching strategies for a just end: improvement of education in chemistry. To reach the main point is to undertake a survey of the most important issues for students and teachers, and from there many teaching strategies are suggested to help in understanding the contents studied. The idea is to propose strategies that may be of interest to students of chemistry, stimulating the curiosity of wanting to know more about a certain content that is being studied in the classroom. This study shows that chemistry is not boring, is not as difficult as it seems, and everyone can indeed take pleasure in studying a world as real and so fascinating, if you understand the facts

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A matemática está presente nas mais diversas atividades do nosso cotidiano. O interesse em realizar o Trabalho de Conclusão de Curso no âmbito da Educação de Jovens e Adultos/EJA, surgiu a partir do meu ingresso no Programa Institucional de Bolsa de Iniciação à Docência - PIBID no início do ano de 2010. O PIBID vem sendo desenvolvido em vários campi da Unesp, somente nos cursos de licenciatura e tem como financiadora a CAPES/MEC. No curso de licenciatura Plena em Pedagogia, o Programa EJA/PIBID Rio Claro atua na escola Municipal Celeste Calil, localizada em um bairro periférico, que tem como público alvo pessoas de baixa renda, alfabetizadas ou não. O trabalho que a cada dia vem sendo construído com as educandas me despertou muito interesse, principalmente com relação ao ensino da matemática, uma vez que a mesma está presente nas diversas esferas do cotidiano. Podemos acompanhar (observar) que as alunas já trazem consigo uma experiência de vida muito grandiosa com relação à solução de questões pertinentes a matemática. Para auxiliar na aprendizagem, recursos matemáticos vêm sendo introduzidos nas aulas, entre eles jogos, onde as educandas podem reviver situações cotidianas que, à primeira vista, facilita o processo de aprendizagem e resolução de problemas. O presente trabalho tem como objetivos fazer um levantamento de jogos matemáticos que poderão ser utilizados nas aulas da EJA, e também analisar o caderno de registros matemáticos do PIBID, no ano de 2010. Quanto à metodologia, buscam-se elementos na pesquisa qualitativa, bem como análise bibliográfica de jogos que foram levantados e também análise documental do caderno de registros do PIBID 2010, construído conjuntamente, pelo grupo de educandas e bolsistaseducadores

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Pós-graduação em Educação Escolar - FCLAR

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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This work presents the results of a study on the use of experimentation in physics teaching, presenting a survey on the use of this strategy in public high schools in the region of São José dos Campos. Data collection was carried out in schools by means of questionnaires prepared for physics teachers and students from three grades of high school. Data were obtained in eighteen schools distributed in the city of São José dos Campos (two in the central region, in the west, three on the east side, seven in the north and five in the south), a school in the district of Sao Francisco Xavier and a school in the town of Monteiro Lobato. Thus, data from 20 schools, 610 students and 20 teachers were analyzed. Among the main results, we highlight that over 80% of the students said that there is no physics lab at the school where they study, and less than 1% declares that uses laboratory weekly. We note that there is a laboratory in 25% of the schools in the northern region and 10% or less of the other schools. According to the students the proposition of the experimental activities by teachers is rare - only three schools in East Side the options sometimes and always exceeded the number of responses experimental activities are never proposed. We had 60% of the teachers who reported using the curriculum of the state of São Paulo to propose activities to students, and half of the teachers said they did not have classes experimental physics classes in initial training or had them in sufficient quantity to support the use of this feature in practice

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The friction phenomena is present in mechanical systems with two surfaces that are in contact, which can cause serious damage to structures. Your understanding in many dynamic problems became the target of research due to its nonlinear behavior. It is necessary to know and thoroughly study each existing friction model found in the literature and nonlinear methods to define what will be the most appropriate to the problem in question. One of the most famous friction model is the Coulomb Friction, which is considered in the studied problems in the French research center Laboratoire de Mécanique des Structures et des Systèmes Couplés (LMSSC), where this search began. Regarding the resolution methods, the Harmonic Balance Method is generally used. To expand the knowledge about the friction models and the nonlinear methods, a study was carried out to identify and study potential methodologies that can be applied in the existing research lines in LMSSC and then obtain better final results. The identified friction models are divided into static and dynamic. Static models can be Classical Models, Karnopp Model and Armstrong Model. The dynamic models are Dahl Model, Bliman and Sorine Model and LuGre Model. Concerning about nonlinear methods, we study the Temporal Methods and Approximate Methods. The friction models analyzed with the help of Matlab software are verified from studies in the literature demonstrating the effectiveness of the developed programming

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)