1,720,999 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
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
Short-term administration of dark chocolate is followed by a significant increase in insulin sensitivity and a decrease in blood pressure in healthy persons
No full textBackground: Numerous studies indicate that flavanols may exert
significant vascular protection because of their antioxidant properties
and increased nitric oxide bioavailability. In turn, nitric oxide
bioavailability deeply influences insulin-stimulated glucose uptake
and vascular tone. Thus, flavanols may also exert positive metabolic
and pressor effects.
Objective: The objective was to compare the effects of either dark
or white chocolate bars on blood pressure and glucose and insulin
responses to an oral-glucose-tolerance test in healthy subjects.
Design: After a 7-d cocoa-free run-in phase, 15 healthy subjects
were randomly assigned to receive for 15 d either 100 g dark chocolate
bars, which contained 500 mg polyphenols, or 90 g white
chocolate bars, which presumably contained no polyphenols. Successively,
subjects entered a further cocoa-free washout phase of 7 d
and then were crossed over to the other condition. Oral-glucosetolerance
tests were performed at the end of each period to calculate
the homeostasis model assessment of insulin resistance (HOMA-IR)
and the quantitative insulin sensitivity check index (QUICKI); blood
pressure was measured daily.
Results: HOMA-IR was significantly lower after dark than after
white chocolate ingestion (0.940.42 compared with 1.720.62;
P 0.001), and QUICKI was significantly higher after dark than
after white chocolate ingestion (0.398 0.039 compared with
03560.023; P0.001). Although within normal values, systolic
blood pressure was lower after dark than after white chocolate ingestion
(107.58.6 compared with 113.98.4mmHg; P0.05).
Conclusion: Dark, but not white, chocolate decreases blood pressure
and improves insulin sensitivity in healthy persons
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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