1,720,995 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
Herpes simplex virus-specific human cytotoxic T-cell colonies expressing either g/d or a/b T cell receptor: role of accessory molecules on HLA-unrestricted killing virus infection targets
Get PDFPrevious studies have demonstrated that herpes simplex virus-1 (HSV-1)-infected mononuclear cells are able to stimulate autologous peripheral blood mononuclear cells (PBMC) of immune donors and to activate HSV-specific cytotoxic T lymphocytes (CTL) expressing either gamma delta or alpha beta T-cell receptors (TCR). In the present report characterization of 10 gamma delta+ and six alpha beta+ HSV-specific cytotoxic T-cell colonies (TCC) is described. Cytotoxic colonies were derived from HSV-induced cell lines of three donors who, in previous experiments, had shown a prevalence of gamma delta+ or alpha beta+ effector cells. HSV-1 induced cell lines obtained from gamma delta responders included more than 80% of cells expressing V gamma 9/delta 2 TCR V region chains. gamma delta+ TCC also expressed V gamma 9/delta 2 molecules. alpha beta+ TCC all expressed CD8 antigen, while only one of 10 gamma delta+ TCC was CD8+, the others being CD4/CD8-double negative. The cytotoxic response of HSV-specific TCC was HLA-unrestricted; nevertheless CD8+ TCC were dependent on the expression of HLA class I on the surface of target cells to mediate cytolytic activity, while CD8- TCC were not. Blocking experiments with monoclonal antibody (mAb) specific for lymphocyte function-associated antigen-1 (LFA-1), which is expressed on all TCC, demonstrated that all alpha beta+ TCC and some gamma delta+ TCC also needed the interaction between LFA-1 and its ligands to develop cytotoxic activity. Altogether our data suggest that HSV-specific CTL may represent a population selected by a high concentration of antigen with a broad range of TCR affinities, which may play an important role as a first line of defence against HSV infection
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
Infezioni da Herpes Simplex (HSV) dopo trapianto cardiaco.
No full textLibro abstract del XXIII Congresso Nazionale Associazione Microbiologi Clinici Italiani, Montecatini Terme (PT) 5-8 ottobre 1994.(Poster
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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