1,720,961 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
Eyewitness identification confidence
Get PDFThe production has been staged many times over the last decade. Although the plot and cast of characters have often varied, the story always involves a crime, a number of unsuspecting eyewitnesses, and an attempt to identify the criminal. Despite these variations, the ending usually remains the same: Some eyewitnesses feel certain they have identified the perpetrator; others lack that certainty. The accuracy of a witness's testimony cannot, however, necessarily be garnered from the certainty he or she expresses. Eyewitness confidence has been found to account for less than 10 percent of the variance in eyewitness identification accuracy (Wells & Murray, 1984).
Eyewitness confidence and eyewitness accuracy are often poorly calibrated (for example, Bothwell, Deffenbacher, & Brigham, 1987; Deffenbacher, 1980; Leippe, 1980; Wells & Murray, 1983, 1984). However, jurors tend to rely heavily on eyewitness confidence to infer witness accuracy (for example, Cutler, Penrod, & Stuve, 1988; Lindsay, Wells, & Rumpel, 1981; Wells, Lindsay, & Ferguson, 1979). For example, Wells, Lindsay, and Ferguson found that subject-jurors’ ascriptions of eyewitness confidence accounted for 50 percent of the variance in their assessments of eyewitness accuracy. Furthermore, the United States judiciary recognizes confidence as a key factor to be considered in deciding the accuracy of eyewitness testimony (Neil v. Biggers, 1972). Given the persuasive power that eyewitness confidence can have in the criminal justice system, it is important to understand the factors that influence eyewitness confidence, particularly those factors that can weaken or destroy an existing confidence-accuracy relationship.This is a chapter from Luus, C. A. E., & Wells, G. L. (1994). Eyewitness identification confidence. In D. F. Ross, J. D. Read, & M. P. Toglia (Eds.), Adult eyewitness testimony: Current trends and developments, pp. 348-361. New York: Cambridge University Press. doi: 10.1017/CBO9780511759192.017. Posted with permission.</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
Evidence for Complex Binding Profiles and Species Differences at the Translocator Protein (TSPO) (18 kDa).
No full textThe translocator protein (TSPO) (18 kDa) is an emerging drug target for the treatment of numerous pathologies including cancer and neurodegenerative disease. However, our limited knowledge of TSPO binding site(s) has hindered the development of TSPO ligands with potential therapeutic effects. We have synthesized a series of pyrrolobenzoxazepines (1-10) to better characterize the interaction of ligands with the TSPO across species, and to determine their functional profiles. All ligands 1-10 displaced the binding of [3H]PK 11195 to the TSPO at nanomolar concentrations, with discrepancies in binding affinity between rat and human TSPO. Interestingly, non-linear regression analysis revealed that some ligands bound to the protein with a Hill slope not equal to 1.0, suggesting possible additional TSPO binding sites with allosteric effects. However, this trend was not conserved between rat and human. When tested for their effects on pregnenolone production in rat C6 glioma cells, nitric oxide release in murine microglia, and cell proliferation in human MCF-7 breast cancer cells, the pyrrolobenzoxazepines (40 μM) displayed functional effects which did not correlate to the binding trend observed in competition assays. We propose that consideration of species differences and binding site cooperativity, plus optimization of currently accepted functional assays, will aid in the development of drugs targeting TSPO that can be used as therapeutics for human disease
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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