A flow duration curve (FDC) defines the relation between the flow amount of any time (daily, yearly, or another time) and its frequency. Moreover, FDCs are used in many water resources projects. However, the ungauged basins or limited amount of gauging in a basin is a common problem. Therefore, regional FDCs are needed to be developed in ungauged basins. Oltu basin has been chosen as the study area, which is located in the north-eastern part of Turkey in &Ccedil / oruh Basin. Two parametric approaches and a statistical approach have been applied to develop regional flow duration curves (FDCs) in Oltu Basin. Parametric approaches cover two different models, namely Model Kocatepe, which is a five parameter model depending on the regression analysis between discharge having certain probability of occurrences and geomorphologic and climatic factors / Model Quimpo, which is a two parameter model proposed by Quimpo. Lognormal distribution has been used in the statistical approach. Several performance indices have been evaluated to decide on if the model dependable or not. As a result of these analysis, it is concluded that, Model Quimpo gives good results in small basins, whereas, Model Kocatepe is effective in large areas. Statistical approach is not an appropriate method to use while regionalizing FDCs in Oltu basin.The analysis performed for short-term duration has revealed that 5-years record lengths of discharges are enough to develop a dependable FDC compared to regional FDC. The validation results and the performance indices are presented with the analysis results.

Submitted by Edineia Teixeira (edineia.teixeira@unioeste.br) on 2018-09-26T14:00:43Z No. of bitstreams: 2 Jonas_Gralick2018.pdf: 2685574 bytes, checksum: b64c2c6e6adf79c04cc4638b8d97ae16 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2018-09-26T14:00:43Z (GMT). No. of bitstreams: 2 Jonas_Gralick2018.pdf: 2685574 bytes, checksum: b64c2c6e6adf79c04cc4638b8d97ae16 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2018-03-16 / A search for alternatives to reduce the use of diesel within the national energy unit has been studied in a gradual way with biodiesel inserts to diesel, in order to reduce greenhouse gases. This is the result of the implementation of Law 13.263 / 2016, which is a mandatory addition of biodiesel in diesel, which is 15% in 2019. Parameters such as viscosity change when biodiesel is added to diesel, where this factor direct influence on fuel atomization and limitation in an engine. Thus, this work sought the behavior of renewable biofuels in a 61 cv agricultural engine, operating with blends of diesel, biodiesel and ethanol, which was tested on pure diesel and the proportions of 8, 15 and 20% biodiesel diesel, with and without ethanol, heating at 45, 65 and 85 ° C. The mechanical performance of the engine was measured by a eddy current dynamometer, and as gas emission by means of a combustion analyzer. The performance tests were performed on five replicates, while the submissions were done at a single time for each treatment. Regarding the performance of the engine, the specific weight was B0E1 at 85 ° C, while for the hourly consensus the lowest value was for the B20 at 85 ° C. The maximum power values were at 45 ° C, and the mixtures with the temperature level increased to the temperature of B15 at 85 ° C, 65 ° C. Rising fuel temperature, reducing heat, fuel temperature, reducing fuel temperature, reducing fuel temperature and reducing fuel consumption / A busca de alternativas para a redução do uso de diesel dentro da matriz energética nacional, tem sido estudada de modo gradativo com inserções parciais de biodiesel ao diesel, de modo a reduzir os gases de efeito estufa. Essa prática é decorrente da implantação da Lei 13.263/2016, que prevê a obrigatoriedade da adição do biodiesel no diesel, a qual chegará em 15% em 2019. Parâmetros como a viscosidade se alteram quando o biodiesel é adicionado no diesel, em que esse fator influencia diretamente na atomização do combustível e emissões em um motor. Assim, este trabalho buscou avaliar o comportamento de biocombustíveis renováveis em um motor agrícola de 61 cv, operando com misturas de diesel, biodiesel e etanol, o qual foi ensaiado o diesel puro e misturas nas proporções de 8, 15 e 20% de biodiesel adicionados ao diesel, com e sem etanol, aquecidas a 45, 65 e 85°C. O desempenho mecânico do motor foi medido por um dinamômetro de correntes de Foucault, e as emissões de gases foram mensuradas por um analisador de combustão. Os ensaios de desempenho foram realizados em cinco repetições, enquanto que as emissões foram coletas em uma única vez para cada tratamento. Em relação ao desempenho do motor, o menor consumo específico foi de B0E1 a 85°C, já para o consumo horário o menor valor foi para B20 a 85°C. Os maiores valores de potência máxima foram a 45°C, e as misturas com etanol também foram superiores em relação às misturas sem etanol, para os valores de torque houve um decréscimo com o aumento da temperatura sendo o menor valor para B15 a 85°C, porém essa mesma mistura teve melhor desempenho a 65°C. Para as emissões apresentou-se um aumento de O2 e temperatura dos gases de exaustão, em função do aumento da temperatura do combustível, todavia para os valores de CO2, NOx e eficiência de combustão teve um decréscimo em função do aumento da temperatura do combustível.

abstract: Reliable and secure operation of bulk power transmission system components is an important aspect of electric power engineering. Component failures in a transmission network can lead to serious consequences and impact system reliability. The operational health of the transmission assets plays a crucial role in determining the reliability of an electric grid. To achieve this goal, scheduled maintenance of bulk power system components is an important activity to secure the transmission system against unanticipated events. This thesis identifies critical transmission elements in a 500 kV transmission network utilizing a ranking strategy. The impact of the failure of transmission assets operated by a major utility company in the Southwest United States on its power system network is studied. A methodology is used to quantify the impact and subsequently rank transmission assets in decreasing order of their criticality. The analysis is carried out on the power system network using a node breaker model and steady state analysis. The light load case of spring 2019, peak load case of summer 2023 and two intermediate load cases have been considered for the ranking. The contingency simulations and power flow studies have been carried out using a commercial power flow study software package, Positive Sequence Load Flow (PSLF). The results obtained from PSLF are analyzed using Matlab to obtain the desired ranking. The ranked list of transmission assets will enable asset managers to identify the assets that have the most significant impact on the overall power system network performance. Therefore, investment and maintenance decisions can be made effectively. A conclusion along with a recommendation for future work is also provided in the thesis. / Dissertation/Thesis / Masters Thesis Electrical Engineering 2019

Made available in DSpace on 2017-07-10T16:05:01Z (GMT). No. of bitstreams: 1 _Jose_Vinicius_Santos_Barboza.pdf: 4262655 bytes, checksum: 3bc9bcfa715a05e7fb59fc7cf6cdc34d (MD5) Previous issue date: 2016-03-17 / Micro and Small Enterprises (MSEs) as well as the Rural Enterprise have great relevance in a regional context. The research aimed to analyze the profile of 121 MPE Brazil Award (Competitiveness Award for Micro and Small Enterprises) in the agribusiness category which is represented by 32% companies and 82% rural producers. Through an exploratory analysis was possible to identify a global overview of the criteria and their respective performances in Leadership (45%), Strategies and Plans (33%), Customers (37%), Society (42%), Information and Knowledge (44 %) People (35%), Processes (45%) and Results (3%). After, data mining techniques were used for analysis by groups; the participants were grouped into four clusters due to their similar characteristics, highlighting the Leadership and Processes criteria with the highest average among all of the criteria. Finally, a detailed analysis by criterion of Excellence was carried out as a way to deepen the results and diagnose the main factors that influence the outcome. It was highlighted some critical factors such as the definition of mission and vision, definition of functions, standardization of processes, availability of information, lack of customer satisfaction assessment, control and then the performance in the social sphere by the entrepreneurs. For these critical factors has been proposed an action plan for results improvement. Among the activities are the executions of courses and workshops, development of management tools, dissemination of good practices, among others. It is suggested the support of entities such as the Sebrae (Brazilian Micro and Small Business Support Service), Senar (Brazilian National Rural Learning Service) and universities. The results show that, as in the literature analyzed, both farmers and micro and small businesses have in common the difficulty in management, development of strategies and management practices. At the same time, there is an increased demand for support services / As Micro e Pequenas Empresas (MPEs) assim como os Empreendimentos Rurais têm grande relevância no cenário regional. A pesquisa objetivou analisar o perfil dos 121 participantes paranaenses do Prêmio MPE Brasil - Prêmio de Competitividade para Micro e Pequenas Empresas, do segmento agronegócio sendo a população representada por 32% empresas e 82% produtores rurais. Por meio de uma análise exploratória foi possível identificar um panorama global dos critérios e os seus respectivos desempenhos (Liderança (45%), Estratégias e Planos (33%), Clientes (37%), Sociedade (42%), Informação e conhecimento (44%), Pessoas (35%), Processos (45%) e Resultado (3%)). Após, foram utilizadas técnicas de data mining (mineração de dados) para uma análise por agrupamentos, sendo os participantes agrupados em quatro clusters por apresentarem características semelhantes, destacando-se os critérios de Liderança e Processos com as maiores médias entre os critérios. Por fim, uma análise detalhada por critério de excelência foi realizada como forma de aprofundar os resultados e diagnosticar os principais fatores que influenciam no resultado. Destacaram-se alguns fatores críticos como a definição da missão e visão, definição de funções, padronização de processos, disponibilidade de informações, ausência de avaliação de satisfação de clientes, controle e por fim atuação no âmbito social por parte dos empreendedores. Para esses fatores críticos foi proposto um plano de ação para que os resultados sejam melhorados. Entre as ações estão a realização de cursos e oficinas, desenvolvimento de ferramentas de gestão, divulgação de boas práticas, entre outros. Sugere-se o apoio de órgãos como exemplo o Sebrae, Senar e Universidades. Os resultados demonstram que, assim como na literatura analisada, os produtores rurais e as micro e pequenas empresas, possuem como característica comum a dificuldade na gestão, na elaboração de estratégias e a práticas administrativas. Ao mesmo tempo ocorre uma procura crescente dos pequenos empreendimentos aos órgãos de apoio.

Submitted by MARIA CRISTINA DOS SANTOS ESTEVES FRAGA (cristinafraga@bb.com.br) on 2017-08-25T21:33:54Z No. of bitstreams: 1 Dissertação Maria Cristina dos Santos Esteves Fraga.pdf: 1656388 bytes, checksum: 37cfc45da00c15f85cfd1f078b01014d (MD5) / Approved for entry into archive by Janete de Oliveira Feitosa (janete.feitosa@fgv.br) on 2017-08-30T18:33:45Z (GMT) No. of bitstreams: 1 Dissertação Maria Cristina dos Santos Esteves Fraga.pdf: 1656388 bytes, checksum: 37cfc45da00c15f85cfd1f078b01014d (MD5) / Made available in DSpace on 2017-08-30T20:43:15Z (GMT). No. of bitstreams: 1 Dissertação Maria Cristina dos Santos Esteves Fraga.pdf: 1656388 bytes, checksum: 37cfc45da00c15f85cfd1f078b01014d (MD5) Previous issue date: 2013-11-28 / A proposta deste trabalho foi realizar um estudo de caso de uma empresa do setor bancário brasileiro, que buscou evidenciar o alinhamento das ações de responsabilidade social corporativa (RSC) do Banco do Brasil com o referencial teórico sobre o tema, a partir da observação do crescente interesse por este assunto por investidores, empresas, governos e academia, pelo desenvolvimento de indicadores de desempenho relacionados à sustentabilidade, bem como pela maior valorização nas Bolsas de Valores das ações das empresas que têm consciência da importância e incluem em seus negócios a RSC. Após análise da literatura específica e dos documentos públicos do Banco, o estudo revelou que as iniciativas do Banco do Brasil, ratificadas pela adesão a tratados e acordos nacionais e internacionais, fazem parte de seu posicionamento estratégico e estabeleceram um novo modelo de gestão, baseado na sustentabilidade dos negócios e das relações com todos os públicos de relacionamento, indicando o alinhamento do Banco com a teoria. / The purpose of this study was to conduct a case study of a company of the Brazilian banking sector, which sought to highlight the alignment of corporate social responsibility (CSR) actions of Banco do Brasil with the theoretical framework on the subject, based on the observation of increasing interest by investors, companies, governments and academia on the subject, the development of performance indices related to sustainability, as well as a greater valuation on the Stock Exchanges of companies that are aware of the importance and include CSR in their business. After analyzing the literature and the public documents of the Bank, the study revealed that the initiatives of Banco do Brasil, ratified by adherence to national and international treaties and agreements, are part of its strategic position and established a new management model, based on sustainability of business and relationships with all stakeholders, indicating the alignment of the Bank with the theory.