325 resultados para TOPOLOGIA


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In this work we present a proposal to contribute to the teaching and learning of affine function in the first year of high school having as prerequisite mathematical knowledge of basic education. The proposal focuses on some properties, special cases and applications of affine functions in order to show the importance of the demonstrations while awaken student interest by showing how this function is important to solve everyday problems

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The aim of this work is to provide a text to support interested in the main systems of amortization of the current market: Constant Amortization System (SAC) and French System, also known as Table Price. We will use spreadsheets to facilitate calculations involving handling exponential and decimal. Based on [12], we show that the parcels of the SAC become smaller than the French system after a certain period. Further then that, we did a comparison to show that the total amount paid by SAC is less than the French System

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Among several theorems which are taught in basic education some of them can be proved in the classroom and others do not, because the degree of difficulty of its formal proof. A classic example is the Fundamental Theorem of Algebra which is not proved, it is necessary higher-level knowledge in mathematics. In this paper, we justify the validity of this theorem intuitively using the software Geogebra. And, based on [2] we will present a clear formal proof of this theorem that is addressed to school teachers and undergraduate students in mathematics

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In this dissertation, we present a study on the teaching of volume of the sphere and the area of spherical surface. On this topic, a quali-quantitative was taken survey with the objective of identifying how these topics are addressed. For this, we made 14 questions to 30 teachers of Natal and the results of this survey are presented and discussed. After that, we present alternative ways to derive the formulas of the volume of a sphere and the are of a spherical surface

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In this paper we analyze the Euler Relation generally using as a means to visualize the fundamental idea presented manipulation of concrete materials, so that there is greater ease of understanding of the content, expanding learning for secondary students and even fundamental. The study is an introduction to the topic and leads the reader to understand that the notorious Euler Relation if inadequately presented, is not sufficient to establish the existence of a polyhedron. For analyzing some examples, the text inserts the idea of doubt, showing cases where it is not fit enough numbers to validate the Euler Relation. The research also highlights a theorem certainly unfamiliar to many students and teachers to research the polyhedra, presenting some very simple inequalities relating the amounts of edges, vertices and faces of any convex polyhedron, which clearly specifies the conditions and sufficient necessary for us to see, without the need of viewing the existence of the solid screen. And so we can see various polyhedra and facilitate understanding of what we are exposed, we will use Geogebra, dynamic application that combines mathematical concepts of algebra and geometry and can be found through the link http://www.geogebra.org

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In this work are presented, as a review and in a historical context, the most used methods to solve quadratic equations. It is also shown the simplest type of change of variables, namely: x = Ay + B where A;B 2 R, and some changes of variables that were used to solve quadratic equations throughout history. Finally, a change of variable, which has been used by the author in the classroom as an alternative method, is presented and the result of this methodoly is illustrated by the responses of a test that was done by the students in classroom

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Nowadays we can observe in Natal city, the development of the structure and the health s private service. However, the spatial distribution of these services will be marked by an uneven distribution on the places, what will be in according with the conditions offered by the same in each historical period. Accordingly, the objective of this job is analyze the use of the territory by the health s private service and the dynamics that promotes in Natal city in the technical scientific information period. Thus, seeking to search this goal, realized literature, documentary, empirical, considering the process of development and the spatial distribution of the health s private service in the city. From a topology we can observe that prevails in the city a service s concentration at all levels of complexity in only a few neighborhoods, being Tirol and Petrópolis, which are neighborhoods that have high densities of engineer system, bigger fluidity, and the best level salaries of the city, which present a greater number of these establishments. However, equal this concentration has occurred a dispersion of these services to other neighborhoods, as for example Lagoa Nova which is presenting the same attractiveness in the view of attributes territorial, begins to protect services presenting the same profile like the firsts. However, the city has a significant demand to this kind of service found in these neighborhoods, some events provided the emergency of another type of market of health s private service, that are those created to attend guests with a lower purchasing power, which will have their establishments in the same way selectively distributed in some areas of the city, which will not be the same pursued by the other, showing how selective is the installation of an enterprise guide by the logic of capitalism reproduction. So, the imperative of spatial selectivity presented by the health s private sector exposes an use of the differential territory for these services

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Diante da histórica situação geográfica de desigualdade regional brasileira, procuramos destacar a questão da desigual distribuição do dinheiro, analisando tanto a instalação dos fixos bem como a dinâmica dos fluxos do sistema financeiro em território nacional. Demonstramos a territorialização do sistema financeiro, por meio de suas agências bancárias, que controlam hoje a dinâmica dos fluxos monetários no território brasileiro. Contudo, apenas o conhecimento dessas formas geográficas, sua quantificação e topologia de nada nos adiantariam se não investigássemos os fluxos de crédito e de depósitos, revelando as desigualdades resultantes do uso corporativo do território brasileiro. Por último, levantamos dados e realizamos revisão bibliográfica que demonstra a consolidação da cidade de São Paulo como centro financeiro do território nacional.

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Uma arquitetura reconfigurável e multiprocessada para a implementação física de Redes de Petri foi desenvolvida em VHDL e mapeada sobre um FPGA. Convencionalmente, as Redes de Petri são transformadas em uma linguagem de descrição de hardware no nível de transferências entre registradores e um processo de síntese de alto nível é utilizado para gerar as funções booleanas e tabelas de transição de estado para que se possa, finalmente, mapeá-las num FPGA (Morris et al., 2000) (Soto and Pereira, 2001). A arquitetura proposta possui blocos lógicos reconfiguráveis desenvolvidos exclusivamente para a implementação dos lugares e das transições da rede, não sendo necessária a descrição da rede em níveis de abstração intermediários e nem a utilização de um processo de síntese para realizar o mapeamento da rede na arquitetura. A arquitetura permite o mapeamento de modelos de Redes de Petri com diferenciação entre as marcas e associação de tempo no disparo das transições, sendo composta por um arranjo de processadores reconfiguráveis, cada um dos quais representando o comportamento de uma transição da Rede de Petri a ser mapeada e por um sistema de comunicação, implementado por um conjunto de roteadores que são capazes de enviar pacotes de dados de um processador reconfigurável a outro. A arquitetura proposta foi validada num FPGA de 10.570 elementos lógicos com uma topologia que permitiu a implementação de Redes de Petri de até 9 transições e 36 lugares, atingindo uma latência de 15,4ns e uma vazão de até 17,12GB/s com uma freqüência de operação de 64,58MHz.

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Pós-graduação em Matemática - IBILCE

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Engenharia Elétrica - FEIS

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Engenharia Elétrica - FEIS

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)