1,721,136 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Monitoramento da condição de unidades motogeradoras em usinas termelétricas usando regras de Nelson
No full textThe physical structure of Thermoelectric Power Plants is made up of several components,
among which the internal combustion engines (MCI) stand out. Fundamentally, in this
type of engine, as the name suggests, energy is produced by burning the fuel inside. As
this generation of thermoelectric energy remains constant during the plant’s operating
period, these engines are constantly subject to stress, due to different factors such as
number of starts, average load, load variation and ambient temperature. However, most
of the time, these existing monitoring systems only indicate whether the monitored parameters
are non-compliant after a failure has occurred – not allowing an early analysis of
the machine’s operating conditions. Knowing this, in this work, a methodology for early
analysis of failures in the internal combustion engine, based on the Statistical Control
Process and Nelson’s Rules, is proposed in an unprecedented way to analyze, in a predictive
manner, the operating conditions of the machine based on in historical data from the
UTE supervisory system. In order to give a practical appeal to the analyzes carried out in
this work, the operational data used are the real records of the year 2019, of the internal
combustion engine model 18V46 (from the manufacturer Wärtsilä), which constitute the
thermoelectric plant in question. The analysis mechanism is validated through two case
studies, the first being a comparison between the degree of severity of the operational
condition of generating unit 5 and the shutdown event of this same generating unit on
08/01/19 and the second case study statistical notes on the degree of severity of generating
unit 5, when it returns from post-shutdown maintenance. It is demonstrated that the
results obtained with the proposed methodology adequately corresponded to the entries
in the shift record, namely the degradation of certain subsystems of the motor generating
unit 5 until its stop in August 2019 - which makes it a promising tool both for making
early decisions about plant maintenance and for helping machine operators check whether
machines that have returned from maintenance are in good condition.A estrutura física das Usinas Termelétricas é formada por vários componentes, dentre eles
se destacam os motores de combustão interna (MCI). Fundamentalmente, neste tipo de
motor, como o próprio nome sugere, a energia é produzida através da queima do combustível
no seu interior. Como essa geração de energia termelétrica se mantém constante
durante o período de operação da usina, estes motores estão constantemente sujeitos a
estresses, devido a diferentes fatores como por exemplo, número de partidas, carga média,
variação de carga e temperatura ambiente. Consequentemente, isso ocasiona várias
falhas como desgaste, vibração excessiva, aumento da temperatura, diminuição da eficiência
energética, entre outras falhas. Devido a este contexto, sabe-se que esses motores
podem não trabalhar em seu melhor rendimento e, consequentemente, existe a necessidade
de um sistema de monitoramento contínuo para verificar as condições de funcionamento.
Porém, na maioria das vezes, esses sistemas de monitoramento existentes apenas indicam
se os parâmetros monitorados estão em não conformidade após a ocorrência de uma falha
- não permitindo uma análise antecipada das condições de operação da máquina. Tendo
conhecimento disso, neste trabalho, uma metodologia de análise preditiva de falhas no
motor de combustão interna, baseada no Processo de Controle Estatístico e Regras de
Nelson, é proposta de forma inédita para analisar, de maneira preditiva, as condições
operacionais da máquina com base nos dados históricos do sistema supervisório da UTE.
Com a finalidade de dar um apelo prático às análises realizadas neste trabalho, os dados
operacionais utilizados são os históricos reais do ano de 2019, do motor de combustão
interna modelo 18V46 (do fabricante Wärtsilä), que constituem a usina termelétrica em
pauta. O mecanismo de análise é validado por meio de dois estudos de caso, sendo o
primeiro uma comparação entre o grau de severidade da condição operacional da unidade
geradora 5 e o evento de parada desta mesma unidade geradora no dia 01/08/19
e o segundo estudo de caso os apontamentos estatísticos do grau de severidade da unidade
geradora 5, quando ela retorna da manutenção pós parada. Demonstra-se que os
resultados obtidos com a metodologia proposta corresponderam adequadamente aos lançamentos
do registro de turno, sendo eles a degradação de certos subsistemas da unidade
motogeradora 5 até a ocorrência da sua parada em Agosto de 2019 - o que a torna uma
ferramenta promissora tanto para a tomada de decisões sobre manutenções na planta de
forma precoce, quanto para ajudar os operadores das máquinas a verificar se as máquinas
que voltaram de manutenção estão em condições boas
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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