1,721,103 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
Controle adaptativo de D-SSSC por MRAC
Full text linkIn recent years, numerous environmental, technical, and economic factors have enabled the
increased penetration of distributed generation (DG) based on renewable sources in distribution
systems. Along with the benefits brought by this new approach to the power system,
it has become more challenging to maintain power quality standards within acceptable
limits for delivery to consumers. To address these new challenges, power electronicsbased
devices, known as RACDS, have shown great potential for mitigating these issues
in an intelligent, flexible, and dynamic manner. Within this context, this work aims to
analyze the operational performance of a series-type RACDS device, known as a Distribution
Static Synchronous Series Compensator (D-SSSC). This equipment is intended to
interconnect distribution feeders to balance the load between them, thus providing better
voltage regulation, loss reduction, and postponing infrastructure investments to meet
higher energy demands in these systems. The analysis of the D-SSSC’s operational points
allowed for the establishment of essential requirements for the controller to be used. Due
to the high number of uncertainties and events that distribution systems are subject to,
such as load variations, the connection and disconnection of distributed generation, and
network maneuvers, the controller must be robust and agile to prevent critical transient
deviations. In this context, the work proposes the use of a Model Reference Adaptive
Control (MRAC). This controller stands out for its adaptive profile, adjusting parameters
in real-time to cope with the fast dynamics and uncertainties of the distribution system.
Based on the analysis of test results conducted both in a simulated environment and
in a medium-voltage laboratory setting, MRAC has shown promise for controlling the
D-SSSC.Nos últimos anos, inúmeros fatores ambientais, técnicos e econômicos têm viabilizado
o aumento da penetração de geração distribuída (GD) baseada em fontes renováveis no
sistema de distribuição. Juntamente com os benefícios proporcionados por esta nova abordagem
do sistema elétrico, tornou-se mais desafiador manter os padrões de qualidade de
energia dentro de limites aceitáveis a serem entregues ao consumidor. Como forma de
lidar com estes novos desafios, dispositivos baseados em eletrônica de potência conhecidos
como RACDS têm apresentado grande potencial para a mitigação desses problemas de
forma inteligente, flexível e dinâmica. Dentro deste cenário, este trabalho visa à análise
operacional de um dispositivo RACDS do tipo série, conhecido como Compensador série
estático síncrono de distribuição (D-SSSC, do inglês: Distribution static synchronous series
compensator). Este equipamento tem como finalidade a interconexão entre ramais de
distribuição para efetuar o balanceamento de carga entre eles, oferecendo, assim, melhor
regulação de tensão, redução de perdas e postergação de investimentos em infraestrutura
para atender às maiores demandas de energia nestes sistemas. A análise dos pontos operacionais
do D-SSSC permitiu estabelecer os requisitos essenciais para o controlador a ser
utilizado. Devido ao elevado número de incertezas e eventos a que os sistemas de distribuição
estão sujeitos, como variação de cargas, entrada e saída de geração distribuída e
manobras na rede, o controlador deve ser robusto e ágil para evitar desvios transitórios
críticos. Neste contexto, o trabalho propõe o uso do controlador adaptativo com modelo
de referência (MRAC, do inglês: Model Reference Adaptive Control). Esse controlador se
destaca por seu perfil adaptativo, ajustando parâmetros em tempo real para lidar com as
dinâmicas rápidas e incertezas do sistema de distribuição. A partir da análise dos resultados
de testes realizados tanto em ambiente simulado quanto em ambiente laboratorial de
média tensão, indicaram que o MRAC se mostrou promissor para o controle do D-SSSC
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
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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