1,721,346 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
Variation of structural and functional metrics in macrophyte communities within two habitats of eastern Mediterranean coastal lagoons: natural versus human effects
Get PDF1. The variation of structural (multi-dimensional scaling plot of Bray–Curtis similarity, species number, Shannon–Weaver index, percentage coverage) and functional (Ecological State Group (ESG) I percentage coverage, ESG II percentage coverage, Ecological Evaluation Index (EEI)) metrics in benthic macrophyte communities was studied in two different habitats: (a) mud with submerged angiosperms (MA), and (b) mud with macroalgae (MM), in three eastern Mediterranean coastal lagoons. One lagoon was in northern Greece (Agiasma, Nestos Delta, Eastern Macedonia region) and two in south-eastern Italy (Cesine and Margherita of Savoia, Apulian region).
2. The aim was to differentiate metric variation caused by human or natural processes and thereby to (1) select reliable metrics and (2) develop user-friendly protocols for cost-effective monitoring programmes for coastal lagoon water quality.
3. Eight different sites dominated by macrophyte communities characterized by two angiosperms (Ruppia cirrhosa and R. maritima), two opportunistic macroalgae (Ulva sp. and Chaetomorpha linum), and Cyanobacteria colonies were quantitatively and destructively sampled twice.
4. Structural metrics showed highest heterogeneity at a local site-specific scale, while functional metrics showed highest heterogeneity at the scale of habitat. As a result the structural metrics appeared inappropriate as indicators of lagoon water quality changes. By contrast shifts of habitat dominated by angiosperms to opportunistic macroalgae owing to nutrient excess, especially nitrogen, can be identified by functional metrics, especially with EEI
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
Les actions en responsabilité civile dans la survenance des préjudices nés des effets néfastes des changements climatiques devant les juridictions américaines
No full textThe actions in responsibility against the companies involved in greenhouse gas emissions for compensation of climate change damages are growing before the American jurisdictions. However, these damages are uncertain, indefinite. The liability of those companies engaged further to the occurrence of such damages is elusive, and varied, as well as the chain of the responsibilities concerned is indistinct and long. The admissibility of these damages and actions, as well as the liability of those companies is finally settled by an audacious renewal of the legal and political mechanisms of reduction of greenhouse gas emissions. Furthermore, this judicial movement underlies a logic of overtaking the reticence of States about imposing thresholds in order to reduce the greenhouse gases emissions.Les actions en responsabilité contre les entreprises émettrices de gaz à effet de serre pour obtenir réparation des préjudices causés par les changements climatiques prennent de l’ampleur devant les juridictions américaines. Pourtant, ces préjudices présentent un caractère à la fois incertain et indéterminé. La cause de leur apparition est elle-même diffuse, variée, de même que la chaîne des responsabilités y afférente est imprécise et longue. La recevabilité de ces préjudices et l’engagement de la responsabilité de certaines entreprises se sont opérés finalement au moyen d’un renouvellement audacieux des mécanismes juridiques et politiques de limitation des émissions de gaz à effet de serre. Au demeurant, ce mouvement judiciaire permet le dépassement de la résistance des Etats à imposer des seuils chiffrés de limitation des émissions des gaz à effet de serre.Agbéko Nakou Fogan. Les actions en responsabilité civile dans la survenance des préjudices nés des effets néfastes des changements climatiques devant les juridictions américaines. In: Revue Juridique de l'Environnement, n°3, 2011. pp. 317-326
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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