1,721,152 research outputs found
Niche_change_affects_SDM_transferability
No full textChunlong Liu, Christian Wolter, Franck Courchamp, Núria Roura-Pascual, and Jonathan M. Jeschke (2022) “Biological invasions reveal how niche change affects the transferability of species distribution models.” Ecology.The code used for conducting all analyses, and producing the corresponding figures and tables in the main manuscript. All data supporting the results are available in Dataset S1 (Ecology_Liu_Dataset_AllData.xlsx). For more information see readme file (readme_NicheTrans.txt
Revue des blogs (15/05/2020)
No full text« Les virus sont une des forces majeures qui façonnent la biosphère ». Entretien avec Franck Courchamp, directeur de recherche CNRS au laboratoire Écologie, systématique et évolution, CNRS le journal, 13/05/2020 Omniprésents dans le vivant, tous les virus ne déclenchent pas une pandémie. Pour l'écologue Franck Courchamp, l'humain favorise lui-même ce genre de catastrophe en appauvrissant les ressources et en dégradant la biodiversité dont les parasites font partie intégrante... lire ..
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
Financer la conservation par le paiement de droits à l'image des animaux?
No full textUne étude publiée par Franck Courchamp et ses collègues dans la prestigieuse revue Plos biology et reprise dans Le Journal du CNRS arrive à la conclusion suivante : le fait d’utiliser à outrance des espèces emblématiques dans les films d’animations, les publicités ou les logos nuit d’une certaine manière à leur conservation car cette abondance dans les médias fausse les représentations. En effet, le public en les voyant tous les jours en vient à croire qu’elles se portent bien alors que leurs..
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
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