1,720,996 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
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
The EGF Receptor controls osteoblast differentiation by negatively regulating IGF 1/mTOR signalling
No full textMäuse, bei denen der epidermale Wachstumsfaktor Rezeptor (EGF-Rezeptor) deletiert wurde sterben innerhalb eines Monates nach ihrer Geburt und bleiben kleiner als Wildtyp-Mäuse, in Folge eines Wachstumsdefekts ihrer Röhrenknochen. Die molekulare Wirkung des EGF-Rezeptors auf die Knochenentwicklung ist aber unklar. Im Rahmen meiner PhD Arbeit habe ich den Knochenphänotyp von EGF-Rezeptor Knock-out Mäusen zu unterschiedlichen Zeitpunkten vor dem 25. Lebenstag untersucht. Die Resultate dieser Arbeit zeigten, dass der Wachstumsdefekt in den Knochen von EGF-Rezeptor Knock-out Mäusen durch eine Interaktion des EGF-Rezeptors mit dem Insulin Wachstumsfaktor 1 (IGF1)/mammalian Target of Rapamycin (mTOR)-Signaltransduktionswegs zustande kommt. Osteoblasten, welche aus EGF-Rezeptor Knock-out Mäusen isoliert wurden proliferierten in der Zellkultur weniger stark als die Wildtyp-Osteoblasten, waren aber gleichzeitig hyperdifferenziert, wobei sie höhere Konzentrationen von Proteinen des mTOR-Signaltransduktionsweges, unter anderem 4EBP und IGF1R, aufwiesen. Die pharmakologische Hemmung von mTOR verringerte die Osteoblasten-Differenzierung in EGF-Rezeptor Knock-out Osteoblasten, bis auf ein ähnliches Niveau wie bei Wildtyp-Zellen, was darauf schliessen liess, dass die Überaktivierung von mTOR für die beobachtete Hyperdifferenzierung verantwortlich war. Die Stimulierung von Wildtyp Osteoblasten mit IGF1 verstärkte die Differenzierung, wohingegen EGF die Differenzierung drastisch verminderte. In der Histologie imponierten die EGF-Rezeptor Knock-out Mäuse osteopenisch, und ihre Röhrenknochen wiesen dysorganisierte, ungerichtete Mineralisierung auf. Kokultur-Experimente mit Osteoblasten und Osteoklasten deuteten darauf hin, dass dies die Folge eines Osteoblasten-Defekts war, nicht eines Osteoklasten-Defekts. In Summe zeigen die vorgelegten Daten einen wahrscheinlichen Mechanismus für den Knochenphänotyp in EGF-Rezeptor Knock-out Mäusen auf, wobei der IGF1/mTOR-Signalweg durch den EGF-Rezeptor gehemmt wird. Diese Hemmung scheint in der normalen Knochenentwicklung dafür notwendig zu sein, eine balancierte Osteoblasten-Proliferation und Osteobasten-Differenzierung zu gewährleisten.Epidermal growth factor receptor knock-out (EGFR-/-) mice die within one month after birth and remain smaller than their wild type littermates, as a consequence of a growth defect which also affects their long bones. The molecular effect of the EGFR on osteodevelopment, however, has remained unclear. During my PhD thesis work, I analyzed the skeletal phenotype of EGFR-/- mice at various time-points before postnatal day 25. The results of this work showed that the growth defect which was observed in the bones of EGFR-/- mice may depend upon an interaction between the EGFR and the insulin-like growth factor-1 (IGF1)/mammalian target of rapamycin (mTOR)-pathway. Osteoblasts isolated from EGFR-/- mice in cell culture proliferated less than wild type osteoblasts, but were hyperdifferentiated and overexpressed several mTOR-pathway proteins, such as 4EBP and the IGF1-receptor (IGF1R). Pharmacological inhibition of mTOR decreased osteoblast differentiation in EGFR-/- osteoblasts to similar levels as in wild type, suggesting that mTOR-overactivation was responsible for the observed hyperdifferentiation. Additionally, stimulation of wild type osteoblasts with IGF1 enhanced, whereas stimulation with EGF reduced differentiation. At the histological level, EGFR-/- mice were osteopenic with bones exhibiting disorganized and irregular mineralization. Experiments with osteoblasts and osteoclasts in co-culture additionally revealed that the in vivo pattern represented an osteoblastic rather than an osteoclastic defect. In summary, the present data provide a likely mechanism for the complex bone phenotype of EGFR-/- mice, by suggesting that the IGF1R/mTOR-pathway is down-regulated through the EGFR, and that this process is necessary for maintaining an adequate equilibrium between osteoblast proliferation and differentiation.Abweichender Titel laut Übersetzung der Verfasserin/des VerfassersArbeit an der Bibliothek noch nicht eingelangt - Daten nicht geprüftMedizinische Universität Wien, Diss., 2018(VLID)346243
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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