1,721,990 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
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
Regulatory roles of benzyl adenine and sucrose during wound response of the ribosomal protein gene, rpL34
No full textWe previously reported that a large subunit ribosomal protein gene, rpL34, was wound-inducible in tobacco leaves, and that benzyl adenine (BA) enhanced the wound-inducible expression of the gene. Here we report that the wound-inducible expression of the rpL34 gene is enhanced by sucrose. The regulatory roles of BA and sucrose in wound-signalling pathways were investigated using transgenic plants expressing a fusion molecule between the rpL34 promoter and the chloramphenicol acetyltransferase (cat) gene. Wounding caused a progressive increase in CAT activity; BA and sucrose enhanced the response. This indicates that regulation occurs at the transcriptional level. Diethyldithiocarbamic acid (DIECA) and other potent inhibitors of the octadecanoid pathway inhibited the rpL34 promoter, and also reduced BA inducibility of that wound response. However, inhibitors of the octadecanoid pathway did not affect the sucrose response. Protein kinase inhibitors increased BA enhancement while decreasing the sucrose effect, suggesting that protein kinases differentially regulate BA- and sucrose-signalling in the promoter's wound response. Taken together, BA and sucrose enhanced the wound response of the rpL34 promoter via different signalling pathways, although they exerted overlapping effects on wound-induction of the promoter.X112sciescopu
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Flower-preferential poly(A) binding (PAB) protein gene from rice
No full textThe Poly(A) binding (PAB) protein functions in posttranscriptional regulation by stabilizing mRNA and initiating translation. Using sequence homology to Arabidopsis PAB genes, we have identified seven members (OsPAB1 through OsPAB7) of the PAB gene family in rice. These can be divided into two groups based on sequence identity and expression pattern. The four genes in the first clade-OsPAB2, OsPAB4, OsPAB6, and OsPAB7-share strong homology with AtPAB2, and are expressed in all the organs that were examined here. The remaining three, OsPAB1, OsPAB3, and OsPAB5, show the specific expression pattern for flowering. OsPAB1 is expressed throughout floral development, although its level decreases as the flowers mature. In contrast, expression of OsPAB3 is evident in older flowers and developing seeds, while OsPAB5 transcript is present only in mature flowers. All the genes in the second clade are expressed in carpels and stamens, but not in the paleae and lemmae of spikelets. In addition, we have identified a T-DNA insertional line, in which the gus reporter gene is fused to OsPAB1 to produce the PAB1-GUS fusion protein. In those experiments, GUS staining was strong in the ovaries and anthers, demonstrating that OsPAB1 is preferentially expressed in the reproductive organs. (C) 2003 Elsevier Science Ireland Ltd. All rights reserved.X112sciescopu
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