1,720,956 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
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
Transcriptional Regulation ofthe Platelet-Derived Growth Factor beta-receptor
No full textThe Platelet Derived-Growth Factor (PDGF) receptors and ligands are expressed in cells of predominantly mesenchymal origin. Binding of the ligands to the receptors stimulates cell proliferation and other cellular responses such as differentiation and cell movement. Aberrant activity of PDGF has been associated with cell proliferative diseases, for example, several types of cancer, atherosclerosis and rheumatoid arthritis. Transcription the PDGF beta-receptor (PDGFRB) gene is controlled by a promoter containing a CCAAT motif, binding the transcription factor NF-Y, which has been shown to be crucial for initiation of transcription. PDGFRB expression is cell cycle regulated and peaks in early G1. The proto-oncogene product c-Myc is induced through PDGFR and establishes a negative feedback loop via binding of NF-Y, and thereby down-regulating PDGFRB. The aim of this thesis is to further investigate the mechanisms behind the cell-cycle-dependent regulation of the PDGFRB promoter.Paper I: The ubiquitous transcription factor Sp1 up-regulated the PDGFRB promoter activity and two oligonucleotides containing sequences from an area just upstream of the CCAAT motif bound Sp1 in vitro. Sp1 increased the promoter activity independently of an intact CCAAT motif. On the other hand, removal of the Sp1 binding sites reduced NF-Y induced activation, indicating an interaction between the two transcription factors.Paper II and III: The p53 tumour suppressor family member p73alfa down-regulated PDGFRB expression whereas an oncogenic form of p73alfa, DeltaNp73alfa, which lacks the amino terminal transactivation domain, increased the promoter activity. P73alfa bound the same region of NF-Y as c-Myc, however, assays performed in c-Myc-/- fibroblasts showed that p73alfa repressed the PDGFRB promoter independently of c-Myc. The transcriptional co-activators p300 and PCAF, which harbours intrinsic histone acetyl transferase activity, up-regulated the PDGFRB promoter. Immuno-precipitation studies showed that p73alfa, but not DeltaNp73, binds histone de-acetylase HDAC1 that also affected the promoter activity negatively when over-expressed. CHIP assays further showed that DeltaNp73 binds the promoter when PDGFRB expression is high (early G1) and that binding of HDAC1 coincided with weak DeltaNp73 binding and low PDGFRB expression. Paper IV: The transforming viral protein SV40 Large T (LT) antigen bound the promoter and decreased PDGFRB transcription. Mutants of LT unable to bind the tumour suppressors p53 and retinoblastoma protein (pRb), respectively, did not repress the promoter. LT was also unable to repress the PDGFRB promoter in c-Myc-, p53- and pRb-deficient cells, respectively. In conclusion, LT mediated repression of PDGFRB requires p53, pRb and c-Myc. Furthermore, p53 was shown to interact with the PDGFRB promoter and stimulate transcription in a way that requires the Sp1 binding sites
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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