183 resultados para pzt poder


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Pós-graduação em Ciências Sociais - FFC

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The physical properties of self-polarized PbZr1-xTixO3 thin films with no preferential orientation in a range of compositions 0.46 <= x <= 0.50 were investigated. Structural analysis revealed the coexistence of monoclinic-tetragonal and monoclinic-rhombohedral phases at compositions 0.46 <= x <= 0.49, where the monoclinic phase was in the majority and both the tetragonal and the rhombohedral phases in the minority. The dielectric permittivity (epsilon'= 447) reached its maximum at around composition x = 0.48. Asymmetries in the macroscopic and local hysteresis loops confirmed the existence of the self-polarization effect in the studied films.

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Analyzing the Brazilian people's formation and its ethnic variety, the racial issue is marked by racism as a tendency of thought that gathers different human races. The miscegenation originated by the crossbreeding occurred widely among Brazil and carried with it a racial prejudice based on European theses about the population's whitening. Since the arrival of the black population to the country, in the condition of slave, their image is stuck to the stigma of inferiority in relation to white people, making it difficult to have a political influence and introduce themselves into the Brazilian dominant elite. We intent to bring the discussion about local power, coronelismo and patronage, trying to demonstrate how the dominant elite's power and resources allocation schemes, put aside the lower-class from the political scene which is even worse for the black population regarding the suffered racial prejudice. Assuming the matters described above, we argue around the insertion of the black people into the political scenario, taking the City of Araraquara -SP as target to analyze the conditions that prevents them from achieving high positions inside the public sector and develop the issue between representation, social inclusion and political participation

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This study addresses the topic of e-commerce as a competitive strategy for companies seeking innovation and to reach new markets. In last few years, the e-commerce has intensified in Brazil, as a result, many companies have adapted to that new market demand and have invested in new strategies. An example, is the use of social medias to promote the products, specifically the fashion retail industry, which promotes its products through partnerships with fashion blogs. To prove this new market trend, based on researches and indicators, this study will present growth data of e-commerce in Brazil, the fashion industry characteristics and the influence of blogs to increase sales, to further, understand its relation to the growth in e-commerce of fashion and future expectations

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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This paper presents some results of the investigation on the Mathematical Education Centre (CEM), a group of mathematics teachers’ educators in São Paulo, Brazil, acting mainly between 1984 and 1997. The essay, marked by an effort to constitute the identity of the CEM based on Foucault, assumes that the identity constitution process is not about what CEM is or was, but mainly about a set of possibilities of apprehending it from its historically contextualized strategies and initiatives. In this Foucauldian reading, which brings about concepts such as "strategic device", "resistance" and "power relations", the CEM constitution appears while it creates conditions for the constitution of Brazilian modern mathematical education.

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

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Pós-graduação em Educação - FFC

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)