1,721,023 research outputs found
Découverte d'un nouveau gisement d'Athérines (poissons Téléostéens. Atherinomorpha) dans le Paléogène de Mormoiron (Vaucluse)
No full textOccurence of fossil atherine fishes is reported from the upper part of the main quarry of Mormoiron (Vaucluse), which is excavated in Caenozoic strata belonging to the Mammal-zone of Montmartre. A new genus, Palaeoatherina, is erected with the new species P. rhodanica as type-species. Is underlined the interest of this new species for the interpretation of Atherinid fishes evolution. Geographical and ecological distributions of recent Atherinidae agree with modern ideas concerning deposit conditions of gypsum in Mormoiron area.La présence d'Athérines fossiles est signalée dans la partie supérieure de la grande carrière de Mormoiron (Vaucluse) ouverte dans des couches cénozoïques rapportées à la zone mammalogique de Montmartre. Un nouveau genre, Palaeo-atherina, représenté par l'espèce nouvelle P. rhodanica est créé. L'intérêt présenté par cette espèce pour l'interprétation de l'évolution des Atherinidae est souligné. On remarque la concordance existant entre la répartition géographique et écologique des Atherinidae et les idées récentes relatives au mode de dépôt du gypse de Mormoiron.Maurel-Ferrandini Michelle, Ferrandini Jean, Gaudant Jean. Découverte d'un nouveau gisement d'Athérines (poissons Téléostéens. Atherinomorpha) dans le Paléogène de Mormoiron (Vaucluse). In: Géologie Méditerranéenne. Tome 3, numéro 2, 1976. pp. 115-126
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
Paléoenvironnements du Messinien (Miocène) de la plaine orientale de Corse
No full textLes terrains rapportés au Messinien affleurent entre la marina de Bravona au nord et le pénitencier de Casabianda au sud. Au nord il s’agit de corps conglomératiques à scléractiniaires et microfaune infralittorale, reposant en discordance sur le Tortonien inférieur marin néritique. Au sud, le Messinien surmonte le Tortonien supérieur marin ouvert et est constitué par une série conglomératique associée à des diatomites ou des lentilles renfermant des mollusques de milieu saumâtre. La microflore diatomique, riche d’une cinquantaine d’espèces, est dominée par la forme planctonique Aulacoseira granulata. Les centriques sont surtout des formes planctoniques d’eau douce tandis que les pennées, très diversifiés, essentiellement benthiques ou épiphytes, présentent un spectre de salinité assez large : taxons marins, saumâtres et d’eau douce. L’ensemble des données suggère que le Messinien de l’Est corse s’est mis en place dans un contexte margino-littoral, sous influence deltaïque.Maurel-Ferrandini Michelle, Saint-Martin Simone, Ferrandini Jean, Saint Martin Jean-Paul, Cornée Jean-Jacques. Paléoenvironnements du Messinien (Miocène) de la plaine orientale de Corse. In: La Méditerranée autour de ses îles. Actes du 128e Congrès national des sociétés historiques et scientifiques, « Relations, échanges et coopération en Méditerranée », Bastia, 2003. Paris : Editions du CTHS, 2008. pp. 53-56. (Actes des congrès nationaux des sociétés historiques et scientifiques, 128-18
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
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
Correlation of messinian carbonate platforms
No full textEsteban M., Clauzon Georges, Cornée Jean-Jacques, Cunningham K., Ferrandini Jean, Franseen E., Görür Naci, Guieu Gérard, Grasso M., Hôffling R., Meyers N., Muller J., Pedley Martyn, Plaziat J.-Cl., Suballyuva A., Suc Jean-Pierre, Valleri G., Van buchem Frans S. P. Correlation of messinian carbonate platforms. In: Géologie Méditerranéenne. Tome 21, numéro 1-2, 1994. Récifs et plates-formes carbonatées miocènes de Méditerranée / Miocene reefs and carbonate platforms of the Mediterranean. Interim colloquium R.C.M.N.S. (Marseille 3-6 mai 1994) sous la direction de Jean-Paul Saint-Martin et Jean-Jacques Cornée. pp. 159-163
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