1,720,953 research outputs found
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
Value of multiparametric magnetic resonance imaging and targeted biopsy for risk stratification in patients with prostate cancer considered for active surveillance
No full textIntrodução e objetivo: A avaliação da gravidade da neoplasia em pacientes com câncer de próstata tem como propósito identificar e tratar somente os pacientes com doença clinicamente significativa. Os parâmetros clínicos e histopatológicos tradicionalmente utilizados na estratificação de risco classificam erroneamente uma parcela importante dos pacientes. O objetivo deste estudo foi avaliar o papel da ressonância nuclear multiparamétrica de próstata (RNMMP) e da biópsia transretal realizada com fusão de imagem e estimativa visual na estratificação precoce dos pacientes em vigilância ativa. Métodos: Foram incluídos prospectivamente pacientes com câncer de próstata de baixo risco candidatos a vigilância ativa: biópsia inicial convencional com no mínimo 12 fragmentos; escore de Gleason = 7, > 3 fragmentos positivos ou >= 50% de envolvimento de qualquer fragmento. A performance da RNMMP em prever os resultados da biópsia confirmatória foi estudada. Análise uni e multivariada mediante regressão logística avaliou a relação entre idade, PSA, densidade de PSA, número de fragmentos positivos na biópsia inicial e o escore da RNMMP e a chance de reclassificação na biópsia confirmatória. Resultados: Cento e cinco pacientes estiveram disponíveis para análise final. Quarenta e dois (40%) pacientes apresentaram PI-RADS 1,2 ou 3 e 63 (60%) PI-RADS 4 ou 5. No geral, 87 pacientes foram submetidos à biópsia guiada com fusão. A taxa de reclassificação entre pacientes com PI-RADS 1,2,3,4 e 5 foi de 0%, 23.1%, 9.1%, 74.5% e 100%, respectivamente. No geral, a sensibilidade, especificidade, valor preditivo positivo (VPP) e valor preditivos negativo (VPN) da RNMMP para predição de reclassificação foi de 92.5%, 76%, 81% e 90.5%, respectivamente. Daqueles reclassificados, 47 (44.8%) tinham escore de Gleason >= 7 e 11 apresentavam (10.4%) >= 3 fragmentos positivos e >= 50% de envolvimento de qualquer fragmento individualmente. Na análise multivariada, somente a densidade de PSA e a RNMMP permaneceram como fatores preditivos significativos para reclassificação (p = 7, > 3 positive fragments or >= 50% involvement of any core. The performance of mp- MRI on predicting CB results was assessed. Univariate and multivariate logistic regression were performed to study relationships between age, PSA, PSA density, number of positive cores in the initial biopsy and mpMRI grade on CB reclassification. Results: 105 patients were available for analysis. 42 (40%) patients had PIRADS 1,2 or 3 lesions and 63 (60%) had only grades 4 or 5 lesions. Overall, 87 patients underwent visual estimation TRUS-Bx. Reclassification among patients with PI-RADS 1,2,3,4 and 5 was 0%, 23.1%, 9.1%, 74.5% and 100%, respectively. Overall, mpMRI sensitivity, specificity, PPV and NPV for disease reclassification were 92.5%, 76%, 81% and 90.5%, respectively. Of men reclassified 47 (44.8%) were upstaged because of Gleason >= 7, 11 (10.4%) because of >= 3 positive fragments plus >= 50% involvement. On multivariate analysis, only PSA density and mpMRI remained significant for reclassification (p < 0,05). On cross-tabulation SB would have missed 15 significant cases detected by targeted biopsy. On the other hand SB detected 5 cases of significant cancer not detected by targeted biopsy alone. Conclusions: Multiparametric magnetic resonance imaging is a significant tool for predicting cancer severity reclassification on CBx among AS candidates. The reclassification rate on CBx is particularly high in the group of patients who have PI-RADS grades 4 or 5 lesions. Despite the usefulness of visual-guided biopsy, it still remains highly recommended to retrieve standard fragments during CBx in order to avoid missing significant tumor
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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