1,721,190 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
GENOMIC AND EPIGENETIC APPROACHES IN THE CLINICAL AND PROGNOSTIC STRATIFICATION OF CHRONIC LYMPHOCYTIC LEUKEMIA
No full textChronic lymphocytic leukemia (CLL) is characterized by highly clinical heterogeneity; the identification of factors that could predict the clinical course of early-stage CLL represents a crucial objective in this malignancy. The aim of the study is to identify novel biological markers that may be clinically relevant to envisage specific risk subgroups of CLL patients using both genomic (integrated FISH and microarray technology) and an epigenetic approach in highly purified B-cell populations obtained from early-stage CLLs (Binet stage A). The availability of information concerning the follow-up of the analyzed patients allowed the investigation of a potential prognostic significance associated with the biological markers identified. Genome-wide DNA profiling and FISH were used to perform a deletion-mapping analysis of 17p in a subset of 18 CLLs with TP53 deletion and in all the investigated cases, the breakpoints were scattered along the 17p10–p11.2 region. Additionally, gene expression profile (GEP) analysis revealed specific transcriptional patterns and altered molecular pathways associated with 17p aberrations. SNP-array technology and gene expression profiling data were also applied to investigate the 13q14 deletion occurring in a panel of 100 CLLs representative of the major genetics, molecular and biological features of the disease. Based on SNP-array, our study shows the presence of two different molecular groups of patients with del(13)(q14) based on the deletion size and the presence of biallelic deletions. Notably, global gene expression profiling identified a significant transcriptional deregulation specifically associated with the two groups. The genomic complexity detected by SNP-array approach indicates that a relatively high degree of genomic alterations is associated with early-stage CLLs. As regards the genomic changes, the most important and novel finding is the occurrence of 2p gain in a recurrent fraction of early-stage CLLs, which appears to represent an independent prognostic factor for treatment occurrence.
An epigenetic approach was used to investigate global DNA hypomethylation affecting repeated sequences, such as long interspersed nuclear elements-1 (LINE-1), Alu and satellite α DNA (SAT-α DNA), reported to be associated with chromosomal instability. Our analysis was performed in a panel of 77 CLLs and 7 healthy donors using robust quantitative Pyrosequencing methodology to detect the methylation status of the three repetitive elements. For the first time, we reported a significant association between Alu, LINE-1 and SAT-α hypomethylation and the occurrence of the 17p13 deletion; our data also indicate that SAT-α hypomethylation may represent an independent negative prognostic marker significantly correlated with the need of starting treatment. Overall, our data further support: i) the use of microarray technology to characterize well-known lesions for a better prognostic stratification of the disease as well as to investigate genomic changes in CLL, allowing the definition of novel aberrations with pathogenetic and prognostic implications; ii) the use of an epigenetic approach to identify the potential clinical relevance of specific repetitive elements hypomethylation, which may be used as a novel prognostic indicator of unfavorable disease progression
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
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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