1,720,960 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
Interaction of JLP with PLK1 recruits FoxK1 to form a ternary complex during mitosis
Full text linkJLP (JNK associated Leucine zipper protein) is a scaffolding protein that has been shown to interact with and activate the JNK/p38MAPK pathway. Its interaction with various signaling proteins is associated with coordinated regulation of cellular processes such as endocytosis, motility, neurite outgrowth, cell proliferation and apoptosis. Here, we undertook a mass spectrometric approach to identify novel interaction partners of JLP and identified the mitotic Ser/Thr kinase, Polo like Kinase 1 (PLK1) and the Fox transcription factor, Forkhead box protein K1 (FoxK1), as proteins that interact with and form a ternary complex with JLP during mitosis. Domain mapping studies showed that the N-terminal domain of JLP interacts with the polo-box domain (PBD) of PLK1 in a phosphorylation-dependent manner. Our results indicate that, JLP is phospho-primed on Thr351, which is recognized by the PBD of PLK1 and leads to phosphorylation of JLP at additional sites. Moreover, treatment of cells with the PLK1 inhibitor BI2536 affects this interaction, demonstrating the importance of PLK1 kinase activity in this process. Because JLP is a scaffolding protein that recruits proteins to mediate specific cell signaling events, the interaction of JLP with PLK1 likely results in the recruitment of other proteins to this complex. To test this hypothesis, we carried out SILAC labeling of proteins in mitotic cells in the presence or absence of BI2536. Through mass-spectrometry, we identified the FoxK1 transcription factor as a PLK1-dependent JLP-interacting protein. Furthermore, we show that JLP, PLK1 and FoxK1 form a ternary complex that is present only during mitosis. Knockdown of PLK1 and not JLP affected the interaction between JLP and FoxK1, indicating that the formation of the ternary complex is PLK1-dependent. FoxK1 is a known transcriptional repressor of the cyclin dependent kinase inhibitor, p21/WAF1. Knockdown of JLP in U2OS cells resulted in increased FoxK1 protein levels and a reduction of p21 expression. Moreover, immunofluorescence studies in asynchronous cells showed that FoxK1 is excluded from the nucleus during mitosis and that a fraction of FoxK1 localizes to the midbody region during cytokinesis. Analysis of FoxK1 protein in cells exiting S-phase suggests that FoxK1 is post-translationally modified during mitosis. In this study we characterized the ternary complex formed between JLP, PLK1 and FoxK1 during mitosis. Based on our observations, we propose that formation of the JLP/PLK1/FoxK1 ternary complex regulates the stability and/or transcriptional activity of FoxK1.Molecular Biology and Genetic
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
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