1,720,956 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
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
Etablierung eines automatisierten Verfahrens zur Quantifizierung von Plasmakonzentrationen direkter oraler Antikoagulantien
No full textÜber ein Jahrzehnt nach Erstzulassung stellt die Abbildbarkeit der direkten oralen Antikoagulantien (DOAKs) Labore weltweit noch immer vor Herausforderungen. Kalibrator- und matrixabhängige chromogene Tests sind inzwischen zwar durchaus verbreitet, stoßen jedoch insbesondere in Notfallsituationen mit limitierten Informationen zum eingenommenen Wirkstoff an ihre Grenzen. Potenzial bieten LCMS-basierte Messmethoden, die in der DOAK-Bestimmung dem Goldstandard entsprechen. Durch den Bedarf an geschultem Personal, lange Laufzeiten und die begrenzte Verfügbarkeit ist ihr Einsatz derzeit jedoch hauptsächlich auf wissenschaftliche Fragestellungen beschränkt. Wir haben eine LCMS-basierte DOAK-Bestimmung an ein automatisiertes Probenvorbereitungsmodul (CLAM-2030, Shimadzu) gekoppelt und die Praktikabilität der 24/7-Routine in dieser Konstellation evaluiert. Hauptziele: (1) Vergleich gemessener Plasmakonzentrationen mit dem an das CLAM-2030 gekoppelte LCMS-8050 System (beide Shimadzu) mit Ergebnissen gängiger chromogener Test-Assays (DTI-Assay und Anti-Xa-Assay, HemosIL) (2) Bewertung der Praktikabilität der automatisierten Messmethodik unter Abwägung des Informationsgewinns. Methodik: Quantifizierung von DOAKs in 56 Patientenproben auf einem LCMS-System mit einem automatischen Probenvorbereitungsmodul. Durchführung der Messung separiert nach Wirkstoff (Apixaban, Rivaroxaban und Dabigatran). Automatisierte Proteinausfällung und -trennung der Proben durch Filtration mittels CLAM-2030, die auch als Autosampler für das angeschlossene LCMS fungiert. Vergleich der Plasmakonzentrationen mit den Ergebnissen von Anti-Xa (Apixaban, Rivaroxaban) und DTI-Assay (Dabigatran). Ergebnisse: (1) Gute Korrelation im Methodenvergleich für alle drei Analyten (Apixaban r=0,984, Rivaroxaban r=0,986, Dabigatran r=0,988). Einhaltung der vom Hersteller vorgegebenen Präzision bei Kalibrierungen und Kontrollmessungen (Konzentrationsbereiche von etwa 10 bis 500ng/ml). (2) Einfache Handhabung des automatisierten Systems nach kurzer Einarbeitungszeit. Durchschnittliche Messzeit von ca. 6 Minuten. Nur geringe Interferenzen zwischen den einzelnen Parametern, die einem technischen Rauschen eindeutig zugeordnet werden konnten. Fazit: Die beschriebene Kombination von LCMS und automatisiertem Probenvorbereitungsmodul überzeugt durch eine einfache Handhabbarkeit und schnelle Probenlaufzeiten. Der Übergang von LCMS-basierter DOAK-Bestimmung aus rein wissenschaftlichen Fragestellungen zum Einsatz in (24/7-)Routinemessungen wird hierdurch denkbar. Im Vergleich zu bisherigen Messmethoden bietet das beschriebene Verfahren die Möglichkeit, in einem einzigen Messdurchgang alle DOACs zu quantifizieren. Hieraus leitet sich bedeutendes Potenzial ab, die Gerinnung von Patienten in verschiedenen klinischen (Notfall-)Settings besser einschätzen zu können.More than a decade after their first approval, the imageability of direct oral anticoagulants (DOACs) still poses challenges to laboratories worldwide. Even though calibrator- and matrix-dependent chromogenic tests are now quite common, they reach their limits especially in emergency situations with limited information on the ingested drug. LCMS-based measurement methods, the current gold standard in DOAC determination, bear potential in this regard. However, due to the need for trained personnel, long runtimes and limited availability, their use today is mainly limited to scientific questions. We coupled an LCMS-based DOAC determination to an automated sample preparation module (CLAM-2030, Shimadzu) and evaluated the practicality of the 24/7 routine in this constellation. Main objectives: (1) to compare measured plasma concentrations with the LCMS-8050 system coupled to the CLAM-2030 (both Shimadzu) with results of commonly used chromogenic assays (DTI assay and anti-Xa assay, HemosIL) (2) to evaluate the practicability of the automated measurement methodology, considering the information gain. Methodology: Quantification of DOACs in 56 patient samples on an LCMS system with an automated sample preparation module. Performance of the measurement separated according to the active ingredients (apixaban, rivaroxaban and dabigatran). Automated protein precipitation and separation of samples by filtration using CLAM-2030, which also functions as an autosampler for the connected LCMS. Comparison of plasma concentrations with the results of Anti-Xa (apixaban, rivaroxaban) and DTI assay (dabigatran). Results: (1) Good correlation in method comparison for all three analytes (apixaban r=0.984, rivaroxaban r=0.986, dabigatran r=0.988). Compliance with the precision specified by the manufacturer for calibrations and control measurements (concentration ranges from about 10 to 500ng/ml). (2) Easy handling of the automated system after a short training period. Average measurement time of about 6 minutes. Only minor interferences between the individual parameters, which could be clearly assigned to technical noise. Conclusion: The described combination of LCMS and an automated sample preparation module convinces with easy handling and fast sample run times. The transition of use cases for LCMS-based DOAC determination from purely scientific questions to the use in (24/7) routine measurements becomes conceivable. Compared to previous measurement methods, the procedure described offers the possibility of quantifying all DOACs in a single measurement run. This bears enormous potential for better assessing the coagulation of patients in different clinical (emergency) settings.unknow
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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