1,720,953 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
Impiego di antagonisti microbici nella lotta contro i marciumi della frutta in post-raccolta nell'ambito del progetto ORTOFRULOG
Full text linkI prodotti ortofrutticoli sono caratterizzati da un’elevata deperibilità soprattutto durante la fase del post-raccolta. In questo lavoro sono state condotte delle ricerca volte a valutare l’efficacia di alcuni microrganismi antagonisti per contrastare e limitare l’insorgenza di malattie fungine che interessano la frutta durante la fase di conservazione e trasporto. Sono stati saggiati i lieviti Pichia guilliermondii ceppo CTR-2 e Pichia anomala ceppo GR-2001 ed un batterio Bacillus subtilis ceppo ET-1 contro Penicillium digitatum su frutti di mandarino e contro Botrytis cinerea su frutti di fragola ed uva. I frutti sono stati trattati con sospensioni cellulari del lievito (107 CFU/ml) e con il supernatante ottenuto dalla crescita di B. subtilis in coltura liquida agitata. In seguito, i frutti sono stati artificialmente inoculati con sospensioni conidiche dei patogeni (104 conidi/ml) e incubati a 20 °C con un’umidità relativa del 90%. Alla comparsa dei sintomi è stato rilevato il numero dei frutti con marciumi ed i dati sono stati sottoposti ad elaborazione statistica mediante analisi della varianza. Le percentuali di frutti infetti delle tesi protette con il supernatante di B. subtilis e con la sospensione cellulare di P . guilliermondii, sono state rispettivamente, su mandarino del 20% e 15%, su fragola del 34%
e 56% e su uva 15% e 40%. La percentuale di frutti infetti nelle tesi testimoni è risultata di circa il 100%. Dall’analisi HPLC del supernatante di B. subtilis ottenuto dalla coltura in High Medium broth è stata individuata una elevata quantità di iturina: noto metabolita secondario ad attività antifungina.Fruits and vegetables are afflicted by economically important postharvest diseases. In this study some antagonistic microrganisms against fungal diseases during fruits storage were evaluated. The antagonist activity of Pichia guilliermondii, Pichia anomala and Bacillus subtilis strains was tested against Penicillium digitatum on citrus fruits
and Botrytis cinerea on strawberries and grape fruits. The fruits were treated with cell suspensions of P. guilliermondii (107 CFU/ml) and with cell-free culture fluid of B. subtilis. After treatment, the fruits were artificially inoculated with conidial suspensions of the pathogens (104-105 conidia/ml). All fruits were stored at 20 °C and 90 % relative humidity and their quality was assessed daily for the development of rots. Three replicates of each treatment were done and the data were statistically analysed using analysis of va riance. For citrus fruits, strawberry and grape fruits treated with
B. subtilis supernatant it was observed a percentages of infected fruits of 20%, 34%, and 15%, respectively. Concerning the citrus fruits, namely strawberry and grape fruits treated with yeast cell suspensions, it was observed a percentages of infected fruits of 15% , 56% and 40%, respectively. The percentage of infected fruits in the control test
was 100 %. HPLC analysis of the supernatant from the B. subtilis culture indicated an high amount of iturin. It belongs to a category of bioactive compounds, biosurfactants, that are well known for a wide spectrum of antifungal activity
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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