1,720,962 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
Search for supersymmetry in p-p collisions at 13 TeV using the variable with the CMS detector
No full textThe thesis describes a search for new physics in form of supersymmetry in hadronic final states and missing transverse energy () using a data set of 35.9 fb−1 collected during the 2016 proton-proton runs by the Compact Muon Solenoid (CMS) detector at the Large Hadron Collider (LHC). The search uses robust kinematic variables to suppress backgrounds while maintaining good acceptance to a broad range of signal models and employs data-driven techniques to accurately determine backgrounds and systematic uncertainties. No evidence for Beyond Standard Model (BSM) physics is observed and simplified models are used to interpret the results. For gluino mediated models, the gluino mass up to 1850 GeV and the lightest symmetric particle (LSP) up to 1100 GeV are excluded. For light squark mediated models, the light squark mass up to 1350 GeV (700 GeV) and the LSP up to 650 GeV (400 GeV), assuming no degeneracy in the light squark masses (a degeneracy in light squark masses). For sbottom mediated models, the sbottom mass is excluded to 1075 GeV and the LSP mass up to 550 GeV. For stop mediated models, the stop mass is excluded up to 1075 GeV with the LSP mass up to 400 GeV
Activation of signal transducer and activator of transcription 3 (STAT3) by G[alpha]16 and G[alpha]14 via a c-Src/JAK- and ERK-dependent mechanism
No full textThe hematopoietic-specific Gα16 and Gα14 link a variety of G protein-coupled receptors (GPCRs) to phospholipase Cβ (PLCβ) stimulation. Recent studies reveal that several Gα subunits are capable of activating signal transducer and activator of transcription (STAT) proteins. In the present study, we investigated the mechanism by which Gα16 and Gα14 mediate the stimulation of STAT3. In HEK 293 cells, constitutively active mutants of Gα16 (Gα16QL) and Gα14 (Gα14QL) stimulated STAT3-dependent luciferase activity as well as the phosphorylation of STAT3 at both Tyrosine705 and Serine727. Gα16QL- and Gα14QL-induced STAT3 activation was inhibited by U0126, a Raf-1 inhibitor, and coexpression of the dominant negative mutants of Ras and Rac1. Gα16 and Gα14 were capable of interacting with tetratricopeptide repeat 1 (TPR1) by coimmunoprecipitation. In particular, Gα16QL and Gα14QL appeared to be more tightly associated with TPR1. Inhibition of PLCβ, protein kinase C (PKC), and calmodulin-dependent kinase II (CaMKII) by their respective inhibitors also suppressed Gα16QL- and Gα14QL-induced STAT3 activation. The involvement of tyrosine kinases such as c-Src and Janus kinase 2 and 3 (JAK2 and JAK3) in Gα16QL- and Gα14QL-induced activation of STAT3 was illustrated by the combined use of selective inhibitors and dominant negative mutants, but no physical association between Gα14QL and c-Src could be detected by coimmunoprecipitation. PLCβ, PKC and CaMKII were shown to be involved in Gα14QL-mediated c-Src phosphorylation. c-Jun N-terminal kinase, p38 MAPK, RhoA, Cdc42 and phosphatidylinositol-3 kinase did not appear to be required for Gα16QL- and Gα14QL-induced STAT3 activation. Similar observations were obtained with human erythroleukemia (HEL) cells, where STAT3 phosphorylation was stimulated by C5a or DPDPE in a PTX-insensitive manner. Collectively, these results highlight the important regulatory roles of the PLCβ/CaMKII/PKC, Ras/Raf/MEK/ERK and c-Src/JAK pathways on the stimulation of STAT3 by activated Gα16 and Gα14. Demonstration of the involvement of different kinases in Gα16QL- and Gα14QL-induced STAT3 activation supports the involvement of multiple signaling pathways in the regulation of transcription by G proteins.</p
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
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