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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

A ALGACULTURA NA AGROENERGIA EM GOIÁS: PERSPECTIVA ECONÔMICA E QUADRO JURÍDICO.

Cerewuta, Pollyanna Marinho Medeiros 08 December 2014 (has links)
Made available in DSpace on 2016-08-10T10:47:22Z (GMT). No. of bitstreams: 1 POLLYANNA MARINHO MEDEIROS CEREWUTA.pdf: 1478388 bytes, checksum: 4c568ccbe954787f1615cee835218bba (MD5) Previous issue date: 2014-12-08 / This dissertation analyzes the inclusion of seaweed-like culture agro-energy matrix in the production of biofuels to be used in the State of Goiás, taking into the economic perspective of this undertaking and normative regulation disposed in the Programs of incentive and funding of research of species of microalgae found in the State, due the fact that research developed mainly in the United States confirmed the large lipid productivity of these great carbon dioxide catchers, the gas that simultaneously represented human progress and the atmosphere poisoning, generating numerous problems with undesirable consequences for future generations Starts from the hypotheses of the feasibility of adopting this energy matrix in the productivity of agribusinesses in Goiás, considering the public policy of encouraging and funding at the national and regional level, being a renewable and available resource in the highest degree, so meeting the paradigm provisions in international sustainability standards. Therefore, in the case of biofuels Brazil became the largest consumer of clean energy in the world only because invested for decades and still invests in research, and also intervenes in the economy by regulating the addition and disposal in the consumer market, biofuels prices more attractive than the strictly from fossil fuels. The proposal is to demonstrate that algae-culture is the most efficient energy matrix, although subject to governmental desire to become an alternative to replace fossil fuels about becoming scarce, Due to the increased energy consumption for industrial developments. The methodology to demonstrate this hypothesis comes from the analysis of bibliographic exploratory multidisciplinary branches of biology, chemical engineering, chemistry, developed in Brazil and International about the species that have greater capacity for biomass rich in triglycerides and biotechnology used for this biomass extraction, considering the costs of production, seeing the internal and regional legal standards of ethical guidance to promote sustainability, that before gaining autonomy, depend on state intervention in the market for its insertion. / Esta dissertação analisa a inserção da algacultura como matriz agroenergética na produção de biocombustíveis a ser utilizada no Estado de Goiás, levando em consideração a perspectiva econômica desse empreendimento e a regulação normativa disposta em Programas de incentivo e financiamento de pesquisa de espécies de microalgas encontradas no Estado, devido ao fato de que pesquisas desenvolvidas principalmente nos Estados Unidos da América comprovaram a grande produtividade lipídica dessas grandes captadoras de dióxido de carbono, o gás que ao mesmo tempo representou o progresso humano e o envenenamento do atmosférico, gerando inúmeros problemas indesejáveis que serão arcados pelas gerações futuras. Parte-se da hipótese da viabilidade da adoção dessa matriz energética nas cadeias produtivas do agronegócio goiano, levando em consideração as políticas públicas de incentivo e financiamento em âmbito nacional e regional, por ser um recurso renovável e disponível por excelência, assim atendendo ao paradigma de sustentabilidade disposto nas normas internacionais. Desta forma, em se tratando de biocombustíveis o Brasil só se tornou o maior consumidor de energia limpa do mundo, porque investiu por décadas e ainda investe em pesquisa, e, ainda intervém na economia regulando a adição e a disposição no mercado de consumo, biocombustíveis a preços mais atrativos que os estritamente provenientes de combustíveis fósseis. A proposta consiste em demonstrar que a algacultura é a matriz energética mais eficiente, muito embora dependa da vontade governamental para se tornar uma alternativa à substituição de combustíveis fósseis em vias de tornarem-se escassos, graças ao aumento do consumo de energia pelo desenvolvimentismo industrial. A metodologia para demonstrar essa hipótese vem da análise de pesquisa exploratória bibliográfica multidisciplinar de ramos da biologia, da engenharia química, da química, desenvolvidas no Brasil e no exterior sobre as espécies que possuem maior capacidade de biomassa rica em triglicérides e a biotecnologia utilizada para a extração dessa biomassa, considerando os custos da produção, levando em consideração as normas jurídicas internas e regionais de orientação ética à promoção da sustentabilidade, que antes de ganharem autonomia, dependem da intervenção estatal para sua inserção no mercado.
2

Essays on Optimal Control of Dynamic Systems with Learning

Alizamir, Saed January 2013 (has links)
<p>This dissertation studies the optimal control of two different dynamic systems with learning: (i) diagnostic service systems, and (ii) green incentive policy design. In both cases, analytical models have been developed to improve our understanding of the system, and managerial insights are gained on its optimal management.</p><p>We first consider a diagnostic service system in a queueing framework, where the service is in the form of sequential hypothesis testing. The agent should dynamically weigh the benefit of performing an additional test on the current task to improve the accuracy of her judgment against the incurred delay cost for the accumulated workload. We analyze the accuracy/congestion tradeoff in this setting and fully characterize the structure of the optimal policy. Further, we allow for admission control (dismissing tasks from the queue without processing) in the system, and derive its implications on the structure of the optimal policy and system's performance.</p><p>We then study Feed-in-Tariff (FIT) policies, which are incentive mechanisms by governments to promote renewable energy technologies. We focus on two key network externalities that govern the evolution of a new technology in the market over time: (i) technological learning, and (ii) social learning. By developing an intertemporal model that captures these dynamics, we investigate how lawmakers should leverage on such effects to make FIT policies more efficient. We contrast our findings against the current practice of FIT-implementing jurisdictions, and also determine how the FIT regimes should depend on specific technology and market characteristics.</p> / Dissertation

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