1,720,955 research outputs found
Otimização matemática na decisão do planejamento da expansão de um sistema de 8 barras
Get PDFFil: Copetti Lima, Diomar Adonis. Universidade Federal de Santa Maria. Centro de Excelência em Engenharia e Sistemas de Potência; Brasil.Fil: Fabrin, Francisco Gasparin. Universidade Federal de Santa Maria. Centro de Excelência em Engenharia e Sistemas de Potência; Brasil.Fil: Bernardon, Daniel P. Universidade Federal de Santa Maria. Centro de Excelência em Engenharia e Sistemas de Potência; Brasil.Fil: Cabral, Roberto José. Universidad Nacional de Misiones. Facultad de Ingeniería; Argentina.Fil: Oliveira, Mario Orlando. Universidad Nacional de Misiones. Facultad de Ingeniería; Argentina.A necessidade de distribuir energia elétrica e manter a sua qualidade, faz com que empresas do setor elétrico estejam constantemente preocupadas com a configuração e expansão do Sistema Elétrico de Potência (SEP). Este trabalho visa apresentar uma metodologia para tomada de decisões, no que se refere a expansão do SEP, utilizando a otimização matemática. Será empregado para a simulação do SEP o software ANAREDE e o software Otimiza para a busca da
melhor decisão.The Necessity to distribute electrical energy and maintain its quality makes companies in the electric power industry constantly concerned about the Electric Power System(EPS)configuration and expansion.This work aims present decision making methodology, regarding the expansion of SEP,using mathematical optimization.The software ANAREDE will be used for SEP simulation and the software Otimiza Will Be used to search for the best decision
Despacho de geração com aplicação do método programação dinâmica
Get PDFUm dos grandes desafios das empresas distribuidoras de energia é manter o atendimento da demanda solicitadas por seus clientes. Desta forma o Operador Nacional do Sistema necessita realizar estudos complexos para atender a demanda de todo o sistema elétrico brasileiro. Desta forma se faz necessário o uso de ferramentas computacionais para auxiliar na tomada de decisão sobre o despacho de geração. Neste trabalho será utilizado o Método de Programação Dinâmica Determinística para ilustrar o comportamento das centrais geradoras frente a uma demanda (carga) solicitada pela rede.One of the great challenges that electricity distribution companies face is to constantly meet the demand of their customers. Thus, the National Electric System Operator (ONS) must carry out complex studies in order to satisfy the demand of the entire Brazilian electrical system, which requires the use of computational tools to assist in the decision making when it comes to the generation dispatch. In this work, the Deterministic Dynamic Programming (DDP) method is used to illustrate the behavior of generating plants in response to a certain demand (load) generated by the electrical network.Fil: Copetti Lima, Diomar Adonis. Universidade Federal de Santa Maria; BrasilFil: Fabrin, Francisco G.. Universidade Federal de Santa Maria; BrasilFil: Bernardon, Daniel P.. Universidade Federal de Santa Maria; BrasilFil: Oliveira, Mario Orlando. Universidad Nacional de Misiones; ArgentinaFil: Cabral, Roberto José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina. Universidad Nacional de Misiones; Argentin
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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