348 resultados para Teoria da perturbação


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Pós-graduação em Matemática Universitária - IGCE

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Pós-graduação em Ciências Sociais - FFC

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Pós-graduação em Linguística e Língua Portuguesa - FCLAR

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Pós-graduação em Matemática em Rede Nacional - IBILCE

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Pós-graduação em Comunicação - FAAC

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The Markowitz's objective functions, Value-at-Risk and Conditional Value-at-Risk, are largely used tools in the financial Market for portfolio optimization. This paper tries to analyze these functions having as a target to adapt them for application in non-financial assets portfolios. The paper uses as an example the Electricity Market to analyze and optimize a fictitious investment portfolio of a possible electric power utility. Showing that, besides being possible, which considerations must be taken and which analysis must be made to apply the Modern Portfolio Theory in the non-financial universe

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Física - FEG

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Friedrich Schlegel’s novel, Lucinde, is here discussed as being part of a whole project for the establishment of the basis for a theory of modern novel. At the same time we try to point out some possible descendants of Schlegel’s ideas on the theory of the novel, as in Lukács and Walter Benjamin.

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The aim of this paper is to show a cognitive semantic investigation on the idea of expectation, defined as a mental construct which organizes the thinking and works as specific motivation in the process of communication. Expectation is an idea that may be created in the speaker's or in the listener's mind. It may be verbalized or not. Its semantic information may not be realized in real life, bringing frustration to communication. This study of expectation suggested that it is useful to have a theory to explain what other approaches left over. The working methodology focused in the gathering of data related to the phenomenon and the procedures to explain them inside a cognitive approach. The utterances are directly dependent of how the mind words. Therefore, studying speech we can have an access to people's mind. The idea of expectation may be interpreted under different traditional semantic labels. However, there are some peculiarities that can be explained only by a cognitive approach to language. We find words and phrases in the languages which reveal the presence of an expectation, such as "I think that...", "there has been an expectation about..." All answers are expected to fulfill an expectation. This investigation brought evidence that the mental expectation is essential to the act of communication. Therefore, the study of expectation in languages and in people's mind is important for the researches on cognitive semantics.

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The short story “Os desastres de Sofia” (1964), of Clarice Lispector, can be read as fictional metaphor for the way as the writer elaborated and presented the concept of “Vanguard”. Philosophical reflections of Walter Benjamin (1933) contains the arguments that Clarice, in this narrative, invigorates, by the use of modern keys, vanguardist, according to her conception, which Benjamin sanctioned by the melancholic look of the past. Clarice is notable as a writer of prose affiliated with the brazilian modern poetry.