1,720,954 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
Efecto protector del factor de crecimiento de hepatocitos (HGF) a nivel intestinal en un modelo murino de colestasis química inducida por α-Naftilisotiocianato (ANIT)
Get PDFLa colestasis es una condición del hígado en la que el flujo de la bilis se ve interrumpido por diversos factores. Actualmente existen una serie de modelos para el estudio de esta enfermedad, como el inducido por ANIT. El daño causado por ANIT se incrementa por una producción elevada de especies reactivas de oxigeno. El factor de crecimiento de hepatocitos (HGF) ha demostrado tener propiedades reguladoras sobre la producción de ROS, y gracias a esto, se ha sugerido como una molécula protectora en enfermedades donde el estrés oxidante es determinante para el daño. El estrés oxidante es regulado por HGF ya que puede desencadenar la transcripción de genes blancos regulados por Nrf2. Lo que observamos en el presente estudio fue que HGF pudo contrarrestar el daño en el intestino inducido por ANIT, principalmente la colestasis característica del modelo. En nuestros resultados, HGF mostró proteger la obstrucción intestinal. Así mismo, se demostró que el tratamiento con HGF protegió las zonas mas susceptibles del intestino. A nivel de íleon y colon se observó el incremento del tamaño de criptas y vellosidades, como un evento de proliferación y diferenciación desencadenados por HGF. Estos eventos favorecieron la actividad y protección del íleon y colon, principalmente por el incremento de la secreción de mucinas, disminuyendo la muerte celular. De igual manera, HGF reguló la respuesta inflamatoria entre el colon y el intestino, ya que por un lado disminuyó la inflamación de íleon, y por otro lado incrementó la respuesta reparadora en el colon, principalmente a nivel de translocación de bacterias. Finalmente, HGF mostró tener regulación de ROS en los ratones tratados previamente con ANIT, fenómeno caracterizado por el incremento de proteínas antioxidantes y disminución de presencia de anión superóxido en el tejido observado por la tinción por dihidroetidio. En conclusión, los resultados demostraron que HGF ejerce protección a nivel intestinal en la enfermedad colestásica inducido por ANIT.Cholestasis is a condition of the liver in which the flow of bile is interrupted by various factors. Currently there are several models for the study of this disease, such as the one induced by ANIT. The damage caused by ANIT is increased by an explosion of reactive oxygen species. Hepatocyte growth factor has been shown to have regulatory properties of ROS and thanks to this it has been presented as a protective molecule in diseases where oxidative stress is decisive for damage. Oxidative stress is regulated by HGF as it can trigger the transcription of Nrf2 target genes. What we observed in the present study was that HGF was able to sustain the damage to the gut caused by ANITinduced cholestasis. In our results, HGF was shown to protect the jejunum from intestinal obstruction. Later it was shown that treatment with HGF protected the most susceptible areas of the intestine. At the level of the ileum and colon, the increase in the size of crypts and villi was observed as an event of proliferation and differentiation triggered by HGF. These events favored the activity and protection of the ileum and colon seen by increasing mucin secretion and decreasing cell death in A+H treatments. Similarly, HGF regulated in an interesting way the inflammatory response between the colon and the intestine, on the one hand, decreasing the inflammation of the ileum and on the other, increasing the reparative response in the colon where the translocation of bacteria could increase the damage. Finally, HGF was shown to upregulate ROS in ANIT-pretreated mice seen by increased antioxidant proteins and decreased dihydroethidium staining. In conclusion, the results demonstrated that HGF exerted protection at the intestinal level in cholestatic disease induced by ANIT
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
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