1,720,989 research outputs found
Tight binding dopamine reuptake inhibitors as cocaine antagonists. A strategy for drug development.
No full text
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
Effect of the selective CRF-1 receptor antagonist R121919 in an animal model of binge eating.
No full textEpisodes of binge eating (BE) in humans are characterized by compulsive, non-homeostatic consumption of an unusually large quantity of highly palatable food (HPF) in a short period of time. Considerable evidence suggests that BE may be caused by a unique interaction between dieting and stress. The present study evaluated the effect of the corticotrophin releasing factor 1 receptor (CRF-1R) antagonist R121919 in female rats, in which BE for HPF was evoked by stress and repeated food restrictions (Cifani et al. (2009) Psychopharmacology 204:113-25). The model employs female rats in relation to the higher prevalence of binge eating disorders in women than in men. Four groups of female Sprague-Dawley rats were used: NR+NS was normally fed and not stressed on the test day (d25); NR+S was fed as NR+NS and stressed on d25; R+NS was exposed to 3 cycles of yo-yo dieting (8-day cycles of food restriction/refeeding (4d 66% of the standard chow food intake, 4d food ad libitum) but not stressed; R+S was fed as R+NS and stressed on d25. All groups were fed HPF for 2 h on day 5-6 and 13-14. Stress was induced by preventing access to HPF for 15 min, while rats were able to see and smell it. After the stressful procedure the rats had free access to HPF and standard chow. R121919 was injected subcutaneously 1 h before access to HPF. BE was selectively observed in R+S, that showed a marked increase in HPF intake in comparison to NR+NS. Intake of standard chow pellets was not significantly modified. HPF intake in R+NS and NR+S was not significantly different from that of NR+NS. R121919 (10-20 mg/kg) significantly reduced HPF intake in R+S, but had no effect in the other 3 groups. After the stressful procedure, rats showed increased serum corticosterone (CORT) levels. To asses whether CORT is involved in the BE response, R+S and NR+NS were treated with metyrapone, a CORT synthesis inhibitor at the doses of 50 and 100 mg/kg. It failed to prevent BE. Lastly, CORT injection (2.5 and 10 mg/kg) did not induce BE in R+NS, in comparison to NR+NS. These findings suggest that CRF-1R mechanisms are involved in the BE response following stress and food restrictions; this effect is likely related to its extrahypothalamic functions rather than to its regulatory role in HPA axis activity
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
- …
