939 resultados para Imprecisão Teórica
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O presente artigo apresenta uma revisão bibliográfica a respeito do conceito de Clima de organizações educacionais. Serão abordadas as diferentes definições de clima escolar, as características, os tipos e as variáveis que o determinam. A importância dos estudos sobre clima escolar encontra-se no fato de que tal abordagem possibilita uma melhor compreensão do processo organizacional que se desenvolve nas escolas, permitindo maior clareza das ações que se processam e, conseqüentemente, aprimoramento da organização escolar e do ensino.
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O objetivo deste trabalho é, primeiramente, apresentar algumas discussões referentes aos termos “falsos cognatos”, “falsos amigos” e “cognatos enganosos”. Em um segundo momento, após concluirmos que os termos “falsos cognatos” e “cognatos enganosos” referem-se a dois fenômenos lingüísticos diferentes, propomos definições distintas para cada um deles, ilustrando com exemplos da prática, baseados na Teoria dos Conjuntos Matemáticos.
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O objetivo deste texto é o de apresentar um breve histórico das relações entre ficção e história que destaca, dos clássicos da Antigüidade ao pós-estruturalismo, os momentos (ou os autores) que significativamente colocaram esta questão em foco. Tais reflexões tocam, especialmente, as fronteiras do literário e pretendem contribuir para uma investigação sobre o modo como o romance, sem perder sua especificidade estética, pode incorporar o dado histórico. Palavras-chave: Ficção e história; abordagem teórica; Aristóteles; Hegel; Lukács; Bakhtin; Barthes.
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The study of oscillatory phenomena is an important topic in several areas of knowledge. The understanding and the solution of many problems that scientists and engineers confront nowadays can be formulated, at least as an analogy, in terms of an oscillatory movement. The description of the motion of this nature has remarkable contributions to the mathematical and conceptual formation of the students and for solving daily problems in several areas. In this paper we propose a theoretical and experimental approach involving the phenomenon of harmonic oscillations in two dimensions. Lissajous curves were used as experimental demonstration of the resulting trajectories. These curves were obtained from relatively simple experimental apparatus, which is affordable in most teaching laboratories of physics.
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Pós-graduação em Engenharia Civil - FEIS
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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In the context of university libraries, optimization services, streamlining processes and consistency of processing and organization of informational content are strongly influenced by the indexing policy adopted by the information system. This discussion has proposed to perform a theoretical and methodological research on the subject cataloging in order to contribute to the definition of indexing policy elements in medical university library. To achieve our objective, we applied three instruments: Organizational Culture, Individual Verbal Protocol and Evaluation of Indexing. Considers the importance of developing an indexing policy for improvements in processes and services offered by university libraries, as well as the retrieval.
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Considering that knowledge representation consists in a constant decision-making and that its products must be reliable, this paper highlights the existence of ethical problems in this context with undeniable damage to the user. Thefore, from a theorethical excerpt of the international literature regarding the ethical aspects involved in knowledge organization and representation, this study gets to the reflection of: a) the biases in knowledge representation; and b) non-neutrality of its processes, instruments and products, as subsidies to the outlining of possible ethical problems regarding the user as well as the role of information professional.
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Subject Cataloging is one of the processes of subject approach to information, beside indexing and subject analysis. In this sense, this research is a part of a broader project which analyses ISKO as an academic space that promotes a dialogical dimension among those theoretical questions. In this sense, it aims to analyze the presence of subject cataloguing in the discussions of knowledge organization as well as how the authors of such subject dialogue each other. Considering the questions, the full collection of ISKO and ISKO-Spain conference proceedings were analyzed in order to verify how present were subject cataloguing matters in those collections. It was possible to identify a group of 36 articles (27 from International ISKO and 9 from ISKO – Spain) whose references were bibliometrically analyzed in terms of documentary forms, average life, language and citation analysis. The results showed that the major ISKO and ISKO-Spain literature on subject cataloguing is based on journal articles, mostly published in English, presenting a relatively young average life (14 years for ISKO and 10 for ISKO-Spain).
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The discussion about possibility of deployment of MSW incineration boilers to generate electricity in Brazil is the major topic of this paper. In this article are showed some advantages and disadvantages of this technology, as well as a methodology for the estimate of area for the main equipments of a steam generator for a boiler incineration
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Este trabalho busca mostrar a evolução teórica da tese de banco central independente e as diversas possibilidades de implantação deste sistema em alguns países. Além de uma breve introdução, está dividido em três capítulos e uma conclusão geral. O primeiro capítulo descreve a utilização do sistema banco central independente ao longo do século XX por diversos países. É feita uma divisão do século em vários períodos, mostrando como se deu a atuação dos bancos centrais dos países analisados em cada um desses espaços de tempo. O segundo capítulo analisa os pressupostos teóricos que sustentam a tese de banco central independente, mostrando a evolução das teorias monetárias ortodoxas ao longo do tempo e a importância disso para o tema estudado. O terceiro capítulo trata do caso brasileiro, apresentando, um breve histórico de seu banco central desde sua criação, passando pelas últimas décadas do século XX, até chegar aos dias atuais. O capítulo encerra com o debate entre os especialistas brasileiros sobre a possibilidade de implantação de um banco central independente no país
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In this work, it was studied the thermal and fluid dynamic behavior from theorical and experimental point of view of a blast furnace tuyere. The tuyere is responsible for the hot air insuflation into the blast furnace. The parameter used in the comparison was the difference between the cooling water inlet and outlet temperatures. There were used forced convection correlations inside circular sections with adequations for non circular sections. Based on operations dates of flux and thermal loads it was possible to model numerically the tuyere, and, since it was obtained the wall temperatures, estimate the conduction and convection resistances and the heat flux through the walls in contact with the water. The total heat fluxes from wall to water were applied to the energy conservation equation where could be estimated the theorical temperature variation. Compared to the real value, the theorical value presented a difference of 0,2 °C. Considering that the boundary conditions around the tuyere are transitories and that your channels have some rugosity irregularities we can consider the estimation method for cooling system coherent with the real operational parameters
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This paper aims to study the thermal aspects involved in a liquid cooling system for processors, analyzing their competitiveness and efficiency across the fins and fan system usually used by personal computers, because electronic components become more potent and consequently current methods of cooling are becoming ineffective. The liquid cooling system and air cooling system have different heat transfer mechanisms that involve mainly convection and conduction heat transfer modes, and, furthermore, requires an analysis of fluid dynamics, which can evaluate the losses involved in the closed system, consisting in an exchanger heat pipe and water blocks in liquid cooling system or heat sink and turbo-axial fan in the air cooling system