1,720,992 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
Diagnostische Evaluation von POCT PCR Geräten zum Nachweis von SARS-CoV-2
Get PDFDie PCR-basierte Diagnostik zum Nachweis von SARS-CoV-2 war von signifikanter Bedeutung bei der weltweiten Reaktion auf die COVID-19-Pandemie. Ziel dieser wissenschaftlichen Arbeit war ein Vergleich der PCR-basierten Standarddiagnostik (qRT-PCR) mit Point-of-Care-Test (POCT) Geräten. Es wurden folgende POCT-Instrumente untersucht: Alveo be.well, BD Veritor TM Plus, Bosch Vivalytic, Chronos DX, Fluxergy und Lumira Dx. Der Mangel an unabhängigen wissenschaftlichen Daten zu diesen Testsystemen und ferner an Studien, die auch schwach-positive Proben einschließen, verhindert bislang eine vollständige Bewertung der realen diagnostischen Leistungsfähigkeit. Diese wissenschaftliche Arbeit hatte daher zum Ziel, auch Daten von schwach-positiven Proben auszuwerten, sodass reale Leistungscharakteristika in einer unabhängigen Studie beschrieben werden können.
Neben den diagnostischen Testeigenschaften wurde zudem geprüft, ob eine POCT-Diagnostik schneller und praktikabler als qRT-PCR Goldstandard ist und das Potenzial hat, diese Referenzmethodik in der Routinediagnostik zu ersetzen. SARS-CoV-2-positive- naso- und oropharyngeale Abstriche wurden aus der Biobank des Eurofins MVZ Labor Gelsenkirchen entnommen. SARS-CoV-2-negative Abstriche wurden frisch aus der Routinediagnostik entnommen. Es wurden mindestens 15 positive Proben und mindestens 10 negative Proben pro POCT-Gerät getestet und ausgewertet. Als Goldstandard galt die in der Routinediagnostik genutzte qRT-PCR unter Nutzung des NovaPrime-Workflows. Im Vergleich zum Goldstandard betrug die klinische Sensitivität bei BD Veritor 48,7%, bei Chronos DX und Fluxergy 67%, bei Lumira Dx 70%, bei Albeo be.well 73,3% und bei Bosch Vivalytic 80%. Die Sensitivität war stark abhängig vom
CT-Wert einer Probe. Bei Proben mit geringer Viruslast (CT ≥ 32) sanken die Sensitivitäten stratifiziert stark ab, wobei das Bosch Vivalytic System mit 60% und der Lumira Dx mit 50% Sensitivität am besten abschnitten. Die klinische Spezifität aller Testsysteme, außer die vom Chronos DX, lag bei 100%. Die Turnaround Zeiten waren bei Lumira Dx 15 min, bei Chronos DX und BD Veritor 19 min, bei Bosch Vivalytic 45 min, bei Alveo be.well 60 min und bei Fluxergy 80 min pro Probe. Um den Nutzen der einzelnen Geräte für den Nachweis von SARS-CoV-2 noch besser bewerten zu können, wurde ein Bewertungsscore entworfen. Dieser fasste zwei Unterkategorien zusammen: die Praktikabilität des Testes und den diagnostischen Nutzen. Jedes POCT-Gerät wurde zwischen 0 und 16 Punkten bewertet, mit einem insgesamt höheren Nutzen bei höherer Punktzahl. Das Fluxergy System schnitt mit 5 Punkten am schlechtesten ab. Die höchste Punktzahl erreichte das Bosch Vivalytic System mit 13 Punkten und das Lumira Dx System mit 12 Punkten. Jedoch erfüllte nur das Bosch Vivalytic System die Mindestanforderungen der WHO an Antigen- und POC-Teste hinsichtlich Sensitivität und Spezifität.In Bezug auf die diagnostische Leistungsfähigkeit und der Abfertigung hoher Probenvolumina kann keines der getesteten POCT-Geräte die qRT-PCR Standarddiagnostik in medizinischen Laboratorien ersetzen. In Teststellen wie Notaufnahmen und Flughäfen, wo schneller und einfach durchzuführende PCR - oder Antigen-basierte Testverfahren ohne erweiterte Laborausstattung durchgeführt werden müssen, sind die POCT-Systeme, insbesondere das Bosch Vivalytic, geeignete alternative diagnostische Verfahren
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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