1,721,000 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
Auswirkungen von wirkstoffhaltigem Guttationswasser auf die Honigbiene (Apis mellifera L.) unter besonderer Betrachtung der Brutentwicklung und der Wassersammler
No full textIn Halbfreilandversuchen mit Clothianidin gebeiztem Mais sollte das von der Guttation ausgehende Risiko für die Honigbiene untersucht werden. Unter „Worst- Case„ Bedingungen sollen die Auswirkungen auf die Mortalität der Biene sowie die möglichen Veränderungen in der Brutentwicklung untersucht werden.Die Zeltversuche wurden in Braunschweig (Niedersachsen), in gebeiztem- und ungebeiztem Mais durchgeführt. Die Flugzelte (96 m2) waren mit einer bienendichten Gaze bespannt. Der Versuch wurde zweimal wiederholt; einmal (BBCH 13-15) mit zwei Varianten (mit je einer Wiederholung und Kontrolle), eine mit und eine ohne zusätzliche Wasserquelle mit herkömmlichem Leitungswasser. Im zweiten Versuch (BBCH 15-19) hatten alle Varianten (4 Wiederholungen und 2 Kontrollen) eine künstliche Wasserquelle. Der Totenfall, auf Bodengazen und in vor dem Flugloch angebrachten Totenfallen sowie die Flugaktivität, am Flugloch und im Bestand, wurden einmal täglich bestimmt. Die Beobachtungszeit der Völker (ca. 10.000 Bienen) in den Zelten betrug 11 bzw. 10 Tage, die Brutbeobachtung erfolgte über vier Wochen. Im Versuchszeitraum wurde das Auftreten von Guttation täglich dokumentiert und beprobt.Im Versuch I guttierte der Mais wetterbedingt nur an einem Tag, im Versuch II hingegen an 6 von 11 Tagen. Im Versuch I zeichnete sich die Variante, ohne zusätzliche Wasserquelle, durch eine hohe Mortalität der Flugbienen und eine hohe Ausräumrate in der Brut bis zu 100 % aus. Dies zeigt, wie empfindlich die Bienen auf das wirkstoffhaltige Guttationswasser reagieren, stellt aber auch ein unrealistisches, extremes Szenario dar. Zudem wurde im Versuch I auch in der Kontrollvariante die beobachtete Brut ausgeräumt, daher war die Interpretation des kausalen Zusammenhangs der Brutausräumrate mit Guttation im ersten Versuchsdurchlauf nicht möglich. Die Variante mit künstlicher Wasserquelle, sowie die Kontrollen aus beiden Versuchen, zeigen keine auffälligen Effekte in der Mortalität und der Brut (Versuch II). Der Totenfall aller Varianten (Versuch II) war über die ganze Zeit vergleichbar im normalen Bereich. Der Anteil an ausgeräumter Brut lag zwischen 16-43 %.In a semi-field study with maize seed treated with Clothianidin the possible risk of guttation for bees was investigated. Therefore in a worst- case scenario effects on bee mortality with special consideration of the brood development of the honey bee were assessed. The tent study was performed in Braunschweig (north Germany), in treated and untreated maize. The tents (4 treatment and 2 control) had an area of 96 m2 each and were covered with a gauze impenetrable for bees. The study was repeated twice, in the first run (BBCH 13-15) with two variants, one with and one without artificial water source containing uncontaminated tap water. In the second run (BBCH 15-19) all variants had an artificial water source. Bee colonies used were of similar size with approximately 10.000 bees. The mortality of bees was assessed in dead bee traps and on linen sheets in the crop. The flight activity and behavior of bees at the entrance of the hives and in three flight squares in the crop were determined once daily. The observation time in the tents was 11 (1st run) and 10 (2nd run) days, the observation of brood development for 100 brood cells per hive was conducted for four weeks. The occurrence of guttation was documented and, if guttation occurred, guttation droplets were sampled daily. Due to the weather conditions in the first repetition guttation occurred only once, which caused a high mortality in the waterless variation as well as a brood-termination rate of up to 100 %. In the second run guttation of the corn occurred on 6 of 11 days. The mortality in treated and control variants was on a similar level and within normal range. The brood-termination rate was in the control below 16 %, in the treatment from 16 to 43 %. In the first run of the study, in the artificial extreme situation without any additional water supply a high impact on mortality and also on the brood development was observed, indicating the sensitivity of the test system but representing an unrealistic worst case scenario. In variants with treated maize and additional water supply, no effects on adult mortality and brood were observed. The results of the second run are also with no effects on adult mortality or brood development
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
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
- …
