1,720,959 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
Role of secretin in lipid homeostasis
No full textSecretin, the first hormone commencing the field of endocrinology, has been studied for its pleiotropic role in the body inclusive of its neuroactive and body water homeostatic and gastrointestinal functions. Yet, the metabolic effect of secretin remains elusive and is being proposed recently for a revisit. Recent discovery from our lab showed an anorectic response for secretin, while its role in lipid homeostasis remains largely unexplored. Exerting functions such as exocrine pancreatic secretion and gastric motility inhibition, intestinal fatty acid induced release of secretin was recently shown to be mediated by CD36. Fasting related increase in plasma secretin concentration has been proposed to be involved in lipolysis but evidences regarding lipolytic actions of secretin remain contradictory. Recent report has suggested that secretin stimulates both lipolysis and lipogenesis in adipose cells. Thus, we hypothesize that secretin modulates lipid homeostasis, which was examined under two opposite, energy deficient and energy excess, conditions.
Under energy deficient/starved state, secretin level in circulation and secretin receptor level in epididymal adipose tissue were found to be upregulated. Using secretin receptor knockout (SCTR-/-) and secretin knockout (SCT-/-) mice as controls, it was found that secretin stimulated a dose- and time-dependent lipolysis in vitro and acute lipolysis in vivo. H-89, a protein kinase A (PKA) inhibitor, attenuated the lipolytic effects of secretin in vitro, while secretin induced an increase in cAMP dependent PKA activity in vivo. Using western blot analysis, secretin was found to phosphorylate hormone sensitive lipase (HSL) at serine residue 660. Additionally, immunofluorescent studies revealed that secretin stimulated translocation of HSL from cytosol to surface of lipid droplet subsequently leading to lipolysis.
Under excess energy condition, when SCTR-/- mice and its littermates SCTR+/+ mice were subjected to high fat diet (HFD) feeding for 3 months, it was found that SCTR-/- mice gained lesser weight. Nuclear magnetic resonance imaging revealed that SCTR-/- mice exhibited lower body fat content. Additionally, HFD-associated hyperleptinaemia was alleviated in SCTR-/- mice along with metabolic syndrome as they performed better in insulin and glucose tolerance tests. Continuous monitoring by indirect calorimetry revealed similar food intake, energy expenditure and locomotor activity between SCTR-/- and SCTR+/+ mice. Interestingly, intestinal fatty acid absorption, measured by a noninvasive method, was impaired in HFD-fed SCTR-/- mice. While postprandial triglyceride release was reduced in SCTR-/- mice, it also had a significant reduction in transcript and protein levels of CD36 and its downstream mediator MTTP. Secretin, when incubated with isolated enterocytes, upregulated the expression of CD36.
In summary, during starvation, secretin stimulates lipolysis through a HSL and PKA mediated pathway. When fed a HFD, SCTR-/- mice is resistant to diet induced obesity due to impaired intestinal lipid absorption. A novel short positive feedback pathway between CD36 and secretin, functioning to maximize lipid absorption, is also being proposed. Thus for the first time, two independent role of secretin in lipolysis and in intestinal lipid absorption were discovered along with their mechanistic insights. This study paves way for developing new therapeutic strategies against metabolic disorders associated with lipid metabolism.published_or_final_versionBiological SciencesDoctoralDoctor of Philosoph
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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