281 resultados para Hidrelétrica


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Brazil is internationally acknowledged for its renewable sources, most notably, hydroelectric power plant projects which correspond to 65% of electricity production supply to the National Interconnected System. The main question behind this research is: what are the weights and the relative importance of the variables which have influence on the decision making process for the expansion of hydroelectric generation projects in Parana? The main objective is to propose a multi-criteria decision procedure, in association with water sources options that take into consideration the weight and relative importance of the alternatives having influence on the decision by enterprises in the generation of electricity in the state of Paraná. As far as the approach to the problem is concerned, this research can be classified as having mixed methodologies, applying Content Analysis, Delphi technique and the Analytic Hierarchy Process. Following Delphi methodology, a group of 21 was selected for data collection, all of those linked to Paranaense hydroelectricity market. And the main result was the construction of a decision tree in which it was possible to identify the importance and relative weight of the elements associated with the four dimensions of energy. In environmental dimension, the highest relative weight was placed on the loading capacity of Parana system; the economic dimension, the amortization of investment; in social dimension, the generation of direct work places and in institutional dimension, the availability of suitable sources of financing. Policy makers and business managers make their decisions based on specific criteria related to the organization segment, market information, economic and political behavior among other indicators that guide them in dealing with the typical tradeoffs of projects in hydropower area. The results obtained in the decision tree show that the economic bias is still the main factor in making investment decisions. However, environmental impacts on the State loading capacity, income generation, providing opportunities for direct as well as indirect jobs. And at an institutional level, the absence of funding sources show that the perception of experts is focused on other issues beyond the logic behind development per se. The order of priority of variables in this study indicates that in the current environment of uncertainty in the Brazilian economy as many variables must be analyzed and compared in order to optimize the scarce resources available to expand local development in relation to Paranaense water matrix.

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Dissertação (mestrado)—Universidade de Brasília, Instituto de Ciências Sociais, Departamento de Antropologia, Programa de Pós-Graduação em Antropologia Social, 2015.

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Introdução alterações realizadas no meio ambiente em busca da melhoria da qualidade de vida das pessoas inseridas em locais que apresentam grande potencial hídrico são temáticas de estudos de vários pesquisadores, com destaque para as alterações ocasionadas pela formação de lagos artificiais no Rio Paraná (Brasil), para a construção de usinas hidrelétricas e a conseqüente geração de energia. Objetivos: identificar os impactos gerados nas atividades turísticas desenvolvidas em áreas próximas ao Município de Presidente Epitácio (extremo oeste do Estado de São Paulo, Brasil); descrever as atividades turísticas desenvolvidas próximas ao lago; enfocar as potencialidades turísticas. Procedimentos: levantamento das informações acerca do nível das cotas do rio e do lago artificial e identificação das atividades turísticas realizadas no local; análise e organização dos dados em quadros demonstrativos contendo informações das características ambientais, das potencialidades turísticas, dos eventos turísticos; apresentação de propostas que visam auxiliar administradores e população local no complexo processo de tomada de decisões, de geração de emprego e renda, de inclusão social e da melhoria da qualidade de vida, tendo como base as atividades turísticas efetivas e potenciais. Resultados: descrições das atividades turísticas realizadas próximo ao local da área de estudo e verificação dos principais impactos causados pela atividades.