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
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
Post-radiotherapy bone fragility: investigating osteoclast activity and novel preventative treatments
Full text linkIntroduction: Post-radiotherapy bone fragility is a complex disorder that often results in fragility fractures. These fractures are difficult to predict and often result in complications such as nonunion. Currently no preventative treatments are available to prevent fragility and subsequent fractures following irradiation. One of the main drivers that has stalled development of treatments is a lack of understanding of the cellular mechanisms that drive this condition. Murine model data has identified a short-term increase in osteoclast activity followed by a long-term loss of osteoclasts after radiotherapy. However, the mechanisms that underly this osteoclast dysregulation are unknown. We hypothesized that irradiation directly contributes to the short-term increase in osteoclast activation following irradiation. The overall aim of this dissertation is to identify the cellular mechanisms of post-radiotherapy bone fragility to identify druggable targets for the design of preventative treatments.
Methods: Both in vitro and in vivo methods were used in this dissertation. Osteoclast in vitro studies used a combination of primary murine cells isolated from the bone marrow and the well-established pre-osteoclast like murine RAW 264.7 cell line. Techniques such as qRT-PCR, microscopy, and resorption pit assays were used to understand the transcriptional and functional activity of bone cells following radiotherapy. In vivo studies used female Balb/c mice which received 4 consecutive daily doses of 5 Gy irradiation to the right hindlimb only. Histology, μCT and mechanical testing, among other techniques, were utilized to analyze in vivo samples.
Results: Data from in vitro analysis of osteoclasts showed that osteoclast activation following irradiation is dependent on RANK-L. Irradiated osteocytes significantly increased osteoclast differentiation however osteocytes did not increase RANK-L transcription. In vitro, quercetin decreased osteoclastogenesis in a dose-dependent manner. However, quercetin food supplements did little to attenuate markers of bone fragility in our in vivo mouse model. Caloric restriction attenuated some markers of bone fragility following irradiation in our mouse model, however our preliminary caloric restriction protocol induced signs of stress in mice. Our updated caloric restriction protocol using a cage divider system eliminated signs of stress seen in the preliminary protocol. The updated caloric restriction model was most effective in attenuating short-term markers of bone fragility.
Conclusion: The data presented in this study suggest that short-term osteoclast activation is reliant on RANK-L signaling. Based on in vitro data, osteocytes may play a role in osteoclast activation through secretion of factors that activate RANK/RANK-L signaling cascade. Quercetin showed promise in attenuating the short-term increase in osteoclast activation based on in vitro data, however quercetin supplementation in our murine model did not have a large effect on bone fragility. Improved delivery methods of quercetin may improve efficacy in future studies. Caloric restriction is a promising therapeutic option for post-radiotherapy bone fragility. In vivo data demonstrated improvement in short-term fragility markers. More study is needed to better understand the long-term effects of caloric restriction on bone.NAUpstate Medical UniversityCell & Developmental BiologyPhDOest, Mega
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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