1,720,968 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
Les troubles des conduites alimentaires : tentative de restaurer les besoins psychologiques fondamentaux?
No full textLes troubles des conduites alimentaires (TCA) sont des problématiques prévalentes et complexes, causées généralement par l'interaction entre plusieurs facteurs. Or, certains auteurs proposent que le coeur du problème prendrait sa source dans des difficultés au plan de l'autonomie et du sentiment de compétence. Pour vérifier cette proposition, la théorie de l'autodétermination (TAD) offre un cadre conceptuel intéressant car elle postule que l'être humain possède trois besoins fondamentaux, soit les besoins d'autonomie, de compétence et d'appartenance sociale qui doivent être satisfaits pour permettre à l'individu de développer une motivation autodéterminée et s'actualiser. En effet, ce type de motivation est associé à des conséquences psychologiques, cognitives et comportementales positives. À l'inverse, les individus dont les besoins sont insatisfaits risquent de développer une motivation non autodéterminée et ils auront plutôt tendance à agir pour répondre aux pressions de l'entourage, pour plaire ou pour éviter des conséquences désagréables. À ce sujet, Ryan (2005) suggère que la motivation non autodéterminée se retrouverait davantage chez ceux qui souffrent de psychopathologie. Dans cette optique, certains auteurs proposent que les personnes souffrant de TCA fourniraient un exemple de motivation non autodéterminée engendrée par une frustration chronique des besoins ainsi qu'une internalisation rigide des exigences. La personne développerait donc un fort besoin d'autocontrôlé et d'autorégulation comme besoin substitut aux besoins psychologiques fondamentaux. Ce besoin d'autocontrôlé et d'autorégulation s'exprimerait à travers des attitudes et des comportements alimentaires dysfonctionnels, tels l'insatisfaction corporelle, la poursuite de la minceur, la restriction alimentaire, les crises de boulimie, etc. Ainsi, cette recherche vise à comprendre les processus motivationnels sous-jacents aux attitudes et comportements alimentaires dysfonctionnels. Pour ce faire, elle propose de vérifier un modèle basé sur la TAD, auprès d'un échantillon de 239 femmes issues de la population générale et de vérifier si ce même modèle s'applique à un échantillon clinique de 55 femmes souffrant de TCA. Des analyses de cheminement ont été effectuées afin de tester le modèle initial, qui propose une trajectoire reliant directement la satisfaction des besoins psychologiques fondamentaux, la motivation générale, la régulation des comportements alimentaires, les attitudes et comportements alimentaires dysfonctionnels, de même que la satisfaction dans la vie en général et la détresse psychologique. Les résultats des analyses révèlent que l'ajustement du modèle initial est inadéquat, v^(7, N = 294) = 148.71, /? = .000, NFI = 0.66, CFI = 0.66, RMSEA = 0.23 et qu'il pourrait bénéficier de certaines améliorations. Ainsi, le modèle amélioré suggère que la satisfaction des besoins psychologiques fondamentaux est liée à toutes les variables du modèle. Ce modèle amélioré représente adéquatement les données observées auprès du groupe témoin (%2= 2.80, /?= 0.73; NFI= 0.99; CFI= 1.00; RMSEA= 0.00) et clinique (%2= 6.82, /?= 0.23; NFI= 0.94; CFI= 0.98; RMSEA= 0.08). Néanmoins, pour l'échantillon clinique, certains liens se révèlent non significatifs, soit le lien entre la satisfaction des besoins psychologiques et le type de régulation des comportements alimentaires (/?> .05) et le lien entre la motivation globale et le type de régulation des comportements alimentaires (/?> .05). Les résultats de la présente étude soutiennent donc la validité de ce modèle auprès de la population générale mais révèlent certaines distinctions lorsque le modèle est appliqué à une population clinique
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
The effect of donor-specific transfusion 24 hours pre-transplant and cyclosporin on allograft survival : a clinically relevant induction protocol for cadaveric small bowel transplantation
No full textThe combination of pretransplant donor specific transfusion (DST) and cyclosporin (Cys) has proven to be an effective mode of immunomodulation in numerous allograft models. Our experiments were designed to study the effect of clinically applicable protocols using DST and low-dose cyclosporin in an heterotopic, fully allogenic model of small bowel transplantation in the rat.A 1 ml systemic DST 24 hours pretransplant with Cys (10 mg/kg day 1, 5 mg/kg POD 0 to 7, 2.5 mg/kg POD 8 to 14) was shown to be more effective than DST or Cys alone in prolonging graft survival (p 0.05). Adding successive post-transplant DST (POD 7,14,21) had no effect on graft survival. Portal transfusion and Cys was the most effective mode of antigen presentation (p = 0.01 vs systemic DST), with 33% of the animals having prolonged survival. Adding successive post-transplant DST was deleterious to the portal DST effect. The adjunct of anti-lymphocyte serum to the DST-Cys combination was ineffective
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