1,720,968 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
Services écosystémiques et biodiversité dans les paysages forestiers du nord de Bornéo
Full text linkD'importants changements d'occupation et d'utilisation des sols se poursuivent dans les tropiques humides, où les paysages forestiers sont particulièrement impactés. Un aménagement avisé du territoire requiert des informations sur les services écosystémiques produits dans ces paysages ainsi que sur la biodiversité qu'ils abritent. Cette thèse porte sur l'étude de la diversité d'espèces ligneuses et l'évaluation de la production de services écosystémiques (contrôle de l'érosion des sols, et atténuation du changement climatique via stockage de carbone) dans les paysages forestiers du nord de Bornéo à différentes échelles et à l'aide de données mesurées sur le terrain. A l'échelle locale, l'étude de la distribution de la diversité d'espèces ligneuses et de la production de services écosystémiques au sein de la mosaïque paysagère entourant un village traditionnel du nord de Bornéo a souligné le rôle important des forêts naturelles, des forêts post-exploitation et des jachères liées à l'agriculture itinérante sur brûlis dans la production de services et la conservation de la diversité d'espèces ligneuses. A l'échelle régionale, l'analyse des relations spatiales entre carbone et diversité d'espèces ligneuses sur une région du nord de Bornéo encore largement couverte de forêts a montré que le carbone de la biomasse aérienne et la diversité d'espèces ligneuse sont fortement positivement corrélés. Inversement, les corrélations entre carbone du sol et carbone de la biomasse aérienne ou diversité d'espèces ligneuses se sont révélées négatives. Des recommandations en matière de conservation et d'opportunités de développement ont été formulées. A l'échelle globale, l'analyse quantitative de plus de 3600 mesures de pertes de sol collectées par le biais d'une revue systématique de la littérature a révélé que l'érosion des sols dans les tropiques humides est très nettement concentrée dans l'espace (au niveau des éléments de sol nu présents dans le paysage) et dans le temps (par exemple, durant la rotation des cultures). Nous avons de plus confirmé que la mise en oeuvre de bonnes pratiques de gestion des sols et de la végétation pouvait permettre jusqu'à 99% de réduction des pertes de sol. Nos travaux permettent d'avoir une meilleure compréhension de la distribution spatiale de la diversité d'espèces ligneuses et de services écosystémiques dans les paysages forestiers tropicaux encore peu étudiés, et contribueront à une approche intégrée de l'aménagement du territoire fondée sur la prise en compte des services écosystémiques, approche qui reste anecdotique dans ces régions
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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