923 resultados para centripetal and centrifugal forces
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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A presente pesquisa aspira desenvolver uma possibilidade de interpretação da modernidade através da perspectiva do último homem de Nietzsche e sua reverberação no tipo escravo. Tendo em vista que, segundo a assimilação de Nietzsche da modernidade, esta traduziria o momento de ininterruptas relações constituídas principalmente através dos juízos valorativos. Diante do exposto, coloca-se em foco a motivação para essa pesquisa: investigar de que forma o último homem apresentado em Assim falou Zaratustra efetiva uma linha filosófica que adota sua prática em um tipo moderno e, por isso mesmo gregário, tomando forma cabal na figura do escravo de Nietzsche, na A genealogia da moral?. Para tanto, pretende-se analisar a noção de modernidade enquanto processo de igualação (nivelamento) do homem, a partir de seus textos capitais, a saber, Para além do bem e do mal, cuja obra Nietzsche procura de modo detalhado mostrar o rosto da modernidade e sua constituição decadente. Do mesmo modo, na sua obra A genealogia da moral, faz todo um estudo da procedência e das forças que estão em jogo na fomentação e constituição dos valores. Dessa maneira, a pesquisa torna-se importante não só por desenvolver uma análise teórica conceitual do autor, que apresenta elementos teóricos e filosóficos que ajudam a pensar as questões da modernidade, mas também por querer aprender com Nietzsche que a tarefa do pensamento é um exercitar a crítica, bem como a criação de outras posturas interpretativas diante do mundo.
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Avalia-se aqui como evoluíram as relações entre governo e Forças Armadas, e o comportamento destas no interior da burocracia de Estado com base na análise dos orçamentos federais desde o governo autoritário até o atual (1964-2001). Os dados indicam um declínio lento e constante dos gastos com a defesa, entremeados por repiques elevatórios no início de novos governos. De maneira geral, sugerem que os governos civis definem o padrão orçamentário sem interferência militar, embora os recursos sejam usados sem um acompanhamento adequado das atividades castrenses. Indica-se ainda que a autonomia castrense, isto é, a sua capacidade de definir seu campo de atuação, as normas que a norteiam e as missões a desempenhar, pode ser revigorada. Essa autonomia endêmica não é fruto de escolhas militares, mas da omissão do poder civil.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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The present article discuss how world economic transformations, meanly in the course of structural crisis, conditioned the development strategies of Latin America in the large period between the Great Depression in the 1930s and the 2007 open crisis in the USA. The article provides special attention to national development projects. This paper defends that the outbreak and crisis of developmentism, as well the neoliberal accumulation standard advent, may only be explained, not disregarding the great importance of internal factors, from the international division of labor transformations, the policies and actions of main countries, the geopolitical position of countries and the forces correlation in international scale.
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This paper aims to examine regional integration processes in South America, particularly in Mercosur. The point of departure is the study of Brazilian foreign policy in the region. Possible consequences of international changes will be discussed, as well as the significance of new social and political forces. Continuity and ruptures in Brazilian behaviour as regards integration will be identified to understand strengths and weaknesses in building an independent position and in search of balance among other international power centres.
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Through measurements of basic parameters for determining the fluidization regime, as particle size, minimum fluidization velocity, bed porosity, etc., This paper analyze the mass distribution of the phases of the bed to be discussed in relation to: the flow gas physical properties of the solid particles and the forces acting on the solid particles circulating within the bed, as the weight force, buoyancy and drag forces (Stokes' Law). Due to the weight force is constant, open up the discussion about which of the other two forces, buoyancy and drag force, influencing the behavior of the bed. We used the photographic method to realize the statistical analyzes. Therefore, we can conclude what changes can be made more convenient in fluidizing the bed to obtain the highest efficiency for a good mixing used in industrial processes
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Pós-graduação em Engenharia Mecânica - FEIS
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In experimental conditions, cutting forces were studied during turning of green alumina billets, including their correlation with surface aspects of the workpiece. The correlation between cutting power and the removal rate are important parameters for defining the design of ceramic products, since inadequate parameters can produce excessive surface damage to the workpiece. This study examined the forces obtained during turning of alumina workpieces with 99.8% purity in their green state, by means of a three-point dynamometer, evaluating the cutting, feed and depth forces, using a cermet tool under constant machining conditions. Variables were compared with the forces, including surface finish, tool wear and temperature during machining. In the study, it was found that the depth of cut had no significant effect on the surface quality, and the cutting speed and feed influencing the finish. However, preliminary tests for selecting the cutting conditions showed that unsuitables cutting speeds and feeds generate severe damage to the workpiece surface. The best condition was 1.00 mm depth of cut, and the forces increasedfor with each pass performed, with the feed force the variable with greatest increases in relation to the cutting and depth forces, and wear of the cutting tool directly influenced the surface finish, generated by the highly abrasive nature of the alumina particles of the green compact. It is emphasized that the alumina in its green state showed high abrasive effect on the cutting tool during the turning process and the surface finishing of the green workpiece had a direct influence on the sintered workpiece.
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Pós-graduação em Artes - IA
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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The root resorption is one of the possible sequels of greater complexity to the orthodontist, the difficulty of detection and be asymptomatic. The presence, during the orthodontic treatment, is linked to a multifactorial origin, a complex combination of biological activities, anatomical, physiological, genetic variables and mechanical forces. Thus, the aim of this study was perform to critical literature review related to root resorption in orthodontic movement. Were included articles published between 2004 to 2014, indexed in the PUBMED database. Used descriptors contained in the Mesh, being adopted as inclusion criteria: clinical trials in humans, only articles that had clear ideas and objective, articles with English language. The search strategy used resulted in 24 articles and after applied the inclusion and exclusion criteria, 11 articles remained. Based on the results of this study it was concluded that heavy forces of intrusion, inclination and torque leads to a greater degree of root resorption; its etiology is multifactorial, the periodic radiographic control during treatment is needed and further studies are suggested to identify more specifically the causes and risk factors for root resorption.
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Pós-graduação em Engenharia Elétrica - FEIS
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This article presents the results of research conducted on full-scale models, studying the behavior of steel sleepers under the action of static loads, in vertical, longitudinal and transverse directions. For the research models were run with rails TR-68, fixed with elastic system on seven sleepers each type, separately, embedded in standard ballast with 35 cm height and on the basis of compacted soil with 30 cm thick. For the load tests were constructed using reaction systems of vertical and horizontal forces with the objective of applying the requests. The system of readings and data acquisition was fully computerized, obtaining in real time the values of forces and displacements. The results were compared with those installed in the same way with sleepers of wood, mono-block and bi-block prestressed concrete. The analyzed results provided unprecedented parameters in Brazil and of great importance for the design of modern railway permanent way, using steel sleepers.
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Pós-graduação em Psicologia - FCLAS