1,721,097 research outputs found
Mineiros e sindicalistas na cidade do carvão: Criciúma (1952-1964)
Get PDFDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Filosofia e Ciências Humanas. Programa de Pós-Graduação em História.Análise das estratégias de luta e negociação dos mineiros do carvão de Criciúma, nas décadas de 1950 e 1960, com foco principal no sindicato da categoria. Estudo das lideranças sindicais e suas formas de legitimar-se perante os operários que representavam. Mapa político das vilas operárias da cidade, e as relações dos mineiros com a política formal e sindical, empresários e governo
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
The Last Exile and A Cuban in Mayberry
No full textPresentation by Cuban-born author Gustavo Perez Firmat on his two recent books A Cuban in Mayberry and The Last Exile , which deal with this personal recollections of exile. Dr. Perez Firmat is the David Feinson Professor in the Humanities at Columbia University.https://digitalcommons.fiu.edu/cri_events/1295/thumbnail.jp
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
Dimensionamento e valoração da capacidade de reserva operativa em ambientes competitivos, utilizando técnicas probabilísticas
Get PDFThis thesis presents a new probabilistic technique to evaluate the operating reserve
needs of power systems in a competitive environment. The main objectives are: the capacity
assessment for different reserve markets (regulation, spinning, non-spinning and
replacement), the needs of these capacities to increase supply reliability and the cost
evaluation of the capacity amounts associated with the operating reserve. It is not necessary
the prior establishment of a risk index as a reference criterion in order to determine the
operating reserve needs of a power system.
The developed algorithm is mainly based on the integration of the Loss of Load Cost
(LOLC) index with the reserve capacity bid prices, for the assessment of the capacity needs
considering different markets. The technique will also suggest the maximum acceptable bid
price (cap) in a competitive environment, eliminating the possibility of speculations. Thus, the
methodology simply inhibits the purchase of reserve capacity, signaling that it is more
advantageous to assume customer economic losses due to energy interruption than to allow
highly undesired costs.
The new technique, if compared to the behavior of the Rational Buyer’s method used
by the California ISO (Independent System Operator) for the determining the reserve capacity
needs, offers a significant advantage for it allows the selection of the reserve units through the
simultaneous evaluation of system reliability and capacity bid prices. The method proposed in
this thesis ensures the minimum quality standard in energy supply in competitive
environments with the establishment of the minimum amount of reserve (AGC regulation),
the determination of the maximum offer value allowed in the reserve markets and the
achievement of results that represent the minimum overall cost for these ancillary services
procurement. The results of several studies using the IEEE Reliability Test System and the
Brazilian Southeastern System are presented and discussed.Esta tese apresenta uma nova técnica probabilística para avaliação das necessidades
de reserva operativa de um sistema elétrico de potência num ambiente competitivo. Os
principais objetivos são a determinação das capacidades para os diferentes mercados de
reserva (regulação, girante, não-girante e reposição), a avaliação das necessidades dessas
capacidades para aumentar a confiabilidade no fornecimento e a determinação dos custos
correspondentes. A metodologia proposta prescinde do estabelecimento prévio de um índice
risco como critério de referência para a avaliação dos montantes de reserva operativa.
O algoritmo desenvolvido fundamenta-se principalmente na integração do custo de
perda de carga LOLC (Loss of Load Cost) e dos custos de oferta da capacidade para a
determinação das necessidades dos diferentes mercados de reserva operativa. Consegue-se,
desta forma, estabelecer um balanço entre custos e confiabilidade. A técnica sugere também o
máximo custo de oferta para as capacidades de cada mercado de reserva num ambiente
competitivo, eliminando a possibilidade do surgimento de situações de especulação. Desta
forma, a metodologia simplesmente inibe a compra de capacidade de reserva, sinalizando que
é mais vantajoso assumir o prejuízo econômico causado aos usuários pela interrupção de
energia que permitir custos extremamente indesejáveis.
A nova técnica, se comparada com o comportamento do método Rational Buyer
utilizado pelo sistema da Califórnia nos EUA para a determinação das necessidades de
capacidade de reserva, oferece uma vantagem bastante significativa, pois permite selecionar
as unidades de reserva através da avaliação simultânea da confiabilidade do sistema e dos
custos de oferta dessa capacidade. O método proposto nesta tese também garante padrões
mínimos de qualidade no fornecimento de energia em ambientes competitivos como o estabe lecimento do montante mínimo de reserva (regulação), determinação do valor máximo de
oferta permitido nos mercados de reserva e obtenção de resultados que representam o mínimo
custo para o montante total de reserva. Resultados de estudos utilizando os sistemas teste de
confiabilidade do IEEE (IEEE Reliability Test System) e o sistema Sudeste Brasileiro são
apresentados e discutidos
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