1,723,433 research outputs found
Les réunions scientifiques de l’UMR 7194 UMR 7194 academic meetings
No full textLes RS (réunions scientifiques) de l’UMR 7194 permettent d’échanger des informations, de discuter de questions scientifiques variées et de présenter des activités de recherche de l’UMR ou d’autres laboratoires en lien avec nos thématiques : missions, colloques, articles récemment publiés, projets..
Palynothèque de l’UMR 7194 HNHP
No full textPinus nigra. Vue de profil. Quercus petraea. Vues équatoriale et polaire. La palynothèque déposée au laboratoire de palynologie de l’UMR 7194 HNHP est constituée d’échantillons actuels de grains de pollen du continent européen et du pourtour méditerranéen. Cette collection de comparaison rassemble un fonds d’environ 3000 échantillons montés en lames microscopiques. Pour les échantillons les plus récents, les étamines ayant servi aux préparations des lames de référence sont archivées. Les ..
Linked collectors and determiners for: Two new species of Erythromelana Townsend, 1919 (Diptera: Tachinidae) from Area de Conservación Guanacaste in northwestern Costa Rica.
No full textNatural history specimen data linked to collectors and determiners held within, "Two new species of Erythromelana Townsend, 1919 (Diptera: Tachinidae) from Area de Conservación Guanacaste in northwestern Costa Rica". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="http://bionomia.net/dataset/a9d9de68-7194-4bbe-8996-911e6f942944">https://bionomia.net/dataset/a9d9de68-7194-4bbe-8996-911e6f942944</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/a9d9de68-7194-4bbe-8996-911e6f942944">https://gbif.org/dataset/a9d9de68-7194-4bbe-8996-911e6f942944</a>. Formatted as a Frictionless Data package
Discovery of a large-scale H I plume in the NGC 7194 Group
Get PDFWe present the discovery of a new H I structure in the NGC 7194 group from
the observations using the Karl G. Jansky Very Large Array. NGC 7194 group is a
nearby (z ~ 0.027) small galaxy group with five quiescent members. The
observations reveal a 200 kpc-long H I plume that spans the entire group with a
total mass of M = 3.4 x 10 M. The line-of-sight
velocity of the H I gas gradually increases from south (7200 km s) to
north (8200 km ), and the local velocity dispersion is up to 70 km
s. The structure is not spatially coincident with any member galaxies
but it shows close associations with a number of blue star-forming knots.
Intragroup H I gas is not rare, but this particular structure is still one of
the unusual cases in the sense that it does not show any clear connection with
sizable galaxies in the group. We discuss the potential origins of this
large-scale H I gas in the NGC 7194 group and its relation with the
intergalactic star-forming knots. We propose that this HI feature could have
originated from tidal interactions among group members or the infall of a
late-type galaxy into the group. Alternatively, it might be leftover gas from
flyby intruders.Comment: 9 pages, 3 figure
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
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