1,721,001 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
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
Localization of the CHIP28 water channel in reabsorptive segments of the rat male reproductive tract
No full textAbstract: The water channel protein CHIP28 is responsible for the high constitutive plasma membrane permeability to water of erythrocytes, renal proximal tubule, and thin descending limb of Henle. The male reproductive tract is embryologically related to kidney and some segments, particularly the efferent ducts, exhibit a high rate of solute flux-dependent reabsorption of luminal fluid. To determine whether this could occur through water channels in the plasma membrane of reproductive tract epithelial cells, we used anti-CHIP28 antibodies to localize this protein by Western blotting and immunocytochemistry. Western blotting of proteins from efferent duct homogenate indicated the presence of CHIP28 in the efferent duct cells. By indirect immunofluorescence and protein A-gold immunolabeling, CHIP28 was localized to the brush-border and basolateral membranes of nonciliated cells. Ciliated cells in the same epithelium showed no plasma membrane staining for CHIP28. In accord with immunocytochemical findings, freeze-fracture of nonciliated efferent duct cells revealed a plasma membrane organization resembling that of renal proximal tubule cells that are rich in CHIP28. The anti-CHIP28 antibodies also stained plasma membranes of epithelial cells in the ampulla of the vas deferens, seminal vesicles, and prostate, but not the cells in seminiferous tubules, epididymis, and proximal parts of the vas deferens. Therefore, CHIP28 may be a principal mediator of the transmembrane water transport in absorptive epithelial cells of efferent ducts, as well as in epithelia of several other segments of the male reproductive tract that show both secretory and reabsorptive functions
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
Esenţa filosofiei în viziunea lui B. Russell şi M. Heidegger
Full text linkÎn articol se analizează punctele de vedere a lui B. Russell şi M. Heidegger referitor la importanţa filosofiei. Fiind reprezentanţi remarcabili a unor curente filosofice contemporane, fiecare dintre ei au poziţii destul de diferite despre esenţa filosofiei şi importanţa ei în societate, dar mai ales, în procesul cunoaşterii realităţii. B. Russell, de altfel ca şi alţi reprezentanţi ai neopozitivismului, subapreciază rolul filosofiei în cunoaştere, pe când M. Heidegger, dimpotrivă consideră că doar filosofia poate genera o înţelegere adecvată a realităţii
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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