192 resultados para contingência


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As técnicas utilizadas para avaliação da segurança estática em sistemas elétricos de potência dependem da execução de grande número de casos de fluxo de carga para diversas topologias e condições operacionais do sistema. Em ambientes de operação de tempo real, esta prática é de difícil realização, principalmente em sistemas de grande porte onde a execução de todos os casos de fluxo de carga que são necessários, exige elevado tempo e esforço computacional mesmo para os recursos atuais disponíveis. Técnicas de mineração de dados como árvore de decisão estão sendo utilizadas nos últimos anos e tem alcançado bons resultados nas aplicações de avaliação da segurança estática e dinâmica de sistemas elétricos de potência. Este trabalho apresenta uma metodologia para avaliação da segurança estática em tempo real de sistemas elétricos de potência utilizando árvore de decisão, onde a partir de simulações off-line de fluxo de carga, executadas via software Anarede (CEPEL), foi gerada uma extensa base de dados rotulada relacionada ao estado do sistema, para diversas condições operacionais. Esta base de dados foi utilizada para indução das árvores de decisão, fornecendo um modelo de predição rápida e precisa que classifica o estado do sistema (seguro ou inseguro) para aplicação em tempo real. Esta metodologia reduz o uso de computadores no ambiente on-line, uma vez que o processamento das árvores de decisão exigem apenas a verificação de algumas instruções lógicas do tipo if-then, de um número reduzido de testes numéricos nos nós binários para definição do valor do atributo que satisfaz as regras, pois estes testes são realizados em quantidade igual ao número de níveis hierárquicos da árvore de decisão, o que normalmente é reduzido. Com este processamento computacional simples, a tarefa de avaliação da segurança estática poderá ser executada em uma fração do tempo necessário para a realização pelos métodos tradicionais mais rápidos. Para validação da metodologia, foi realizado um estudo de caso baseado em um sistema elétrico real, onde para cada contingência classificada como inseguro, uma ação de controle corretivo é executada, a partir da informação da árvore de decisão sobre o atributo crítico que mais afeta a segurança. Os resultados mostraram ser a metodologia uma importante ferramenta para avaliação da segurança estática em tempo real para uso em um centro de operação do sistema.

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O trabalho analisa fundamentos sociológicos e filosóficos da responsabilidade civil objetiva, especificamente da responsabilidade “pelo risco”. Parte do pressuposto de que o modo que a maior parte da doutrina civilista que analisa o instituto mitiga as potencialidades do mesmo ser compreendido como um elemento de organização das sociedades funcionalmente diferenciadas, caracterizadas pelo excesso de complexidade e pela radical contingência que permeiam a comunicação realizada entre os sistemas sociais, entre os seres humanos e das relações entre estes e aqueles. Conclui que o risco é uma característica insuperável de tais sociedades, e, analisando as consequências do mesmo para a formação do sujeito capaz de comprometer-se com uma vida política, propõe, baseado principalmente nos estudos filosóficos de Paul Ricoeur e na dogmática constitucional de Robert Alexy, que a responsabilidade civil objetiva seja elevada ao nível jurídico e moral de dever fundamental do sujeito de direito, precipuamente no bojo das relações travadas entre os particulares.

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O trabalho analisa fundamentos sociológicos e filosóficos da responsabilidade civil objetiva, especificamente da responsabilidade “pelo risco”. Parte do pressuposto de que o modo que a maior parte da doutrina civilista que analisa o instituto mitiga as potencialidades do mesmo ser compreendido como um elemento de organização das sociedades funcionalmente diferenciadas, caracterizadas pelo excesso de complexidade e pela radical contingência que permeiam a comunicação realizada entre os sistemas sociais, entre os seres humanos e das relações entre estes e aqueles. Conclui que o risco é uma característica insuperável de tais sociedades, e, analisando as consequências do mesmo para a formação do sujeito capaz de comprometer-se com uma vida política, propõe, baseado principalmente nos estudos filosóficos de Paul Ricoeur e na dogmática constitucional de Robert Alexy, que a responsabilidade civil objetiva seja elevada ao nível jurídico e moral de dever fundamental do sujeito de direito, precipuamente no bojo das relações travadas entre os particulares.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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The aim of this research is to analyze, in a comparative way, by category of grade, some indicators used by Coordination for the Improvement of Higher Education Personnel (CAPES) in evaluating the performance of Graduate Programs in Mathematics in Brazil, for the triennium 2007-2009, in order to contribute to understanding of the complex methodology involved in triennial evaluations of graduate programs. Based on the indicators present in the Comparative Worksheet of Triennial Assessment, Area Mathematics / Probability and Statistics, from 2007 to 2009, present at CAPES Portal, contingency tables were built for the 26 graduate programs in Mathematics, presenting each indicator and the program concepts. Overall, there was a trend of association of all indicators analyzed and the concept obtained, with older and larger programs with better grades in the assessment. Also, with the exception of journal articles Qualis B5, the article average per professor grows as grows the program grade.

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Hegel’s identification with idealism may not apprehend adequately his philosophical thinking if one takes it as a definitive and absolute determination because he is a dialectical thinker or even better speculative. In this sense the moment of materiality cannot be just put aside as a contingency but it is more the opposition through which the spirit fulfills itself. This one cannot be what it is without assuming the materiality as well as the matter cannot be effective without being overtaken in the spirit. The totality appointed by Hegel in the absolute spirit means precisely to know and to recognize one another in the other and also by the other as itself. The spirit only raises to itself insofar it assumes its opposition in matter and by being determined it determines itself but this cannot be fulfilled anywhere but in the matter. In the same way the matter cannot be effective without going beyond itself or being considered in thought, that is not as well establishing itself. If the spirit and the matter are effective insofar they are in relation with one another then the primacy of one over the other can only be understood as a result and not as a starting point. In this way the first moment must not be taken as something static but as coming to be.

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Fossil fuels are the main energy sources of the modern industrial age. Very sophisticated processes have been developed to extract these resources, due to increased demand on a global scale, as the extraction of oil. However, the complexity of these processes can cause accidents such as the release of oil to seas and oceans. In this context, this study proposes to carry out the implementation of a system of information to charts of environmental sensitivity to oil and prepare maps of vulnerability to oil for the city of Caraguatatuba-SP. The implementation of the database with geographical information of coastal environments was appropriate to be provided by the Internet, allowing wide access of data. The maps of vulnerability are important tool developed for the Individual Emergency Plans, because they were developed in operational scale, appropriate to actions to combat oil.

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This study aimed to perform the analysis and characterization of environmental sensitivity to oil from Baixada Santista in the State of São Paulo. The work was done by integrating data of physical environmet, socio-economic activities and the biological / ecological provided by the Research Group on Environmental Sensitivity to Oil Spill in the Institute of Geosciences and Exact Sciences of UNESP “Julio de Mesquita Filho” wich works in the conjunction with the Program of Human Resources Training in Geosciences and Environmental Sciences Applied to the Oil and Gas (PRH-05) of the National Petroleum Agency (ANP). Were also performed descriptive statistical analysis, based on dispersion and trend parameters, which allowed to answer questions related to environmental sensitivity index (ISL) prevalence, the predominance of the ISL by environment and the predominance of the environments of the area, thus providing an overview of Baixada Santista’s main towns about sensitivity to oil. Analyses performed in this study may also help mitigate the environmental and socioeconomic impacts and contribute to contingency plans development for Baixada Santista

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This paper discusses aspects of Budapest, by Chico Buarque, published in 2003. In the novel, a contingency takes the protagonist, a Brazilian, to Hungary. There, involved within a culture quite distinct from his, he has experiences in a strange language, which “even the devil respects”, and with an interesting woman, who teaches him the language. Both, language and woman, turns into mirrors that refract and put his subjective experience, as babelic as the Hungarian, up side down. Considering contingency as a category from the Real (Lacan) and translation as mechanism of subjective search of a blot origin (Derrida), at the same time transcreation (Haroldo de Campos), we will pinpoint some ways to the novel reading.

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Pós-graduação em Engenharia Elétrica - FEIS

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The passion, understood by Aristotle, as a contingency which causes a change in the essence of the subject, was object of research of the Greek philosopher as rhetorical strategy used by the speaker to touch its listeners. The greimasian semiotics, enlarging the concept of Aristotle’s passion, understands it as the soul states of a subject that can be gathered form the analysis of a text. Reflections towards the passion discursivization and its persuasion effects in advertisements lead us to establish the relationships between passion, myth and ways of life.

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The objective of this study is to discuss the notion of history in Arendt, from the importance that needs the thought of Duns Scotus, particularly with regard to the primacy of the will. For the author, Scotus was a medieval thinkers to emphasize the role of free will as power in the face of intellect attached to the natural activity. The freedom to get an act featuring a world ruled by contingency. Now, for Arendt, that freedom is consistent with your idea of authentic political, and base a public space, defined by word and action of individuals. The history, which takes place from political activity, received various treatments, from Greek antiquity to the modern conception of process. It joined the idealistic conceptions, establishing universal ways of defining the future. However, if freedom is to characterize the vita activa, the history must seek the meaning of the facts to scrutinize their singular aspects, which fell to the continuo of universal explanation of the official history. It is, therefore, to approach the history from the perspective of singular narrative, from the spectators, those who founded the public space. Hence the importance of bipolar concepts such as nature and freedom, necessity and contingency, will and intellect, as Scotus.

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A portion of operant literature supports significant production of knowledge about problem solving, observation response and contingency relations between responses with different probabilities of occurrence (Premack Principle). This study investigated possible convergences between a descriptive analysis of ordinal behavior and such portion of the operant literature. Conceptual and methodological analysis of publications have highlighted the relevance of the sequence of events functionally related to the characterization of the production of knowledge about problem solving, observation response and the Premack Principle enabling approaches between programs of research on complex behavioral repertoires as well as expansions in research strategies concerning ordinal responding.

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The environmental sensitivity charts to oil constitute an important tools for contingency planning and assessment of damage caused by oil spills. The main objective of this article is to evaluate the sensitivity of river dynamics to oil spills. Through the identification and mapping of fluvial geomorphological features will be assessed the importance of these resources in terms of sensitivity to oil spills. Through satellite images, was obtained the geomorphological mapping and geomorphological parameters were analysed, in order to characterize the environmental sensitivity to oil spills and derivatives. Therefore, the implementation of an environmental sensitivity mapping from geomorphological parameters contributes to the mapping of the environmental sensitivity to oil, which will assist in the containment and cleanup procedures in case of accidents in fluvial and terrestrial environments, that are slightly studied in Brazil

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)