1,720,977 research outputs found
Recherches sur les bioconstructions à lithophyllum lichenoïdes en Méditerranée occidentale
No full textMorhange Christophe, Laborel-Deguen Françoise, Sartoretto Stéphane, Laborel Jacques. Recherches sur les bioconstructions à lithophyllum lichenoïdes en Méditerranée occidentale. In: Méditerranée, tome 76, 3-4-1992. pp. 67-71
Quand la Grotte Cosquer a-t-elle été fermée par la montée des eaux ?
No full textSartoretto Stéphane, Collina-Girard Jacques, Laborel Jacques, Morhange Christophe. Quand la Grotte Cosquer a-t-elle été fermée par la montée des eaux ? . In: Méditerranée, tome 82, 3-4-1995. Les origines de Marseille. Environnement et archéologie, sous la direction de Christophe Morhange . pp. 21-24
Déplacement des lignes de rivage et mobilité du plan d'eau sur la rive nord du Lacydon de Marseille
No full textMorhange Christophe, Hesnard Antoinette, Laborel Jacques, Prone André. Déplacement des lignes de rivage et mobilité du plan d'eau sur la rive nord du Lacydon de Marseille . In: Méditerranée, tome 82, 3-4-1995. Les origines de Marseille. Environnement et archéologie, sous la direction de Christophe Morhange . pp. 71-76
Montée relative du niveau de la mer et mouvements du sol à l'Holocène en basse Provence (France, Méditerranée)
No full textThe sites of Berre, Fos, La Ciotat and Marseilles show different relative sea level rises during the last 6 000 years. At Fos, a negative tectonic mobility, in connection with Salon-Cavaillon fault, can explain the difference. At Berre, the difference is linked to relative uplift, related to the La Fare shearing fault. At Marseilles and La Ciotat, equal results plead for relative tectonic stability east of the Durance fault. Berre and Fos recorded deformations might be linked to Holocene tectonic mobility in relation to major structures at these sites.En basse Provence, les quatre sites littoraux de Berre, Fos, La Ciotat et Marseille, montrent des différences de mobilité relative du niveau marin importantes depuis 6 000 ans. A Fos, on retient la probabilité de mouvements tectoniques négatifs, en relation avec la faille de Salon-Cavaillon. A Berre, le décalage suggère un soulèvement associé à un basculement de la plaine de l'Arc, vers le nord, en direction de l'accident chevauchant de la Fore. Des résultats identiques à Marseille et à La Ciotat plaident en faveur d'une stabilité tectonique relative à l'est de la faille de la Durance. Les déformations enregistrées à Fos et à Berre pourraient donc traduire une activité tectonique holocène liée aux accidents majeurs de ce secteur.Morhange Christophe, Provansal Mireille, Vella Claude, Arnaud Patrick, Bourcier Michel, Laborel Jacques. Montée relative du niveau de la mer et mouvements du sol à l'Holocène en basse Provence (France, Méditerranée) . In: Annales de Géographie, t. 107, n°600, 1998. pp. 139-159
Indicateur biologique et variations relatives du niveau de la mer sur les côtes rocheuses de Provence depuis 4 500 ans
No full textBiological evidence of relative sea level rise, during the last 4 500 years, on the rocky coasts of Provence.
On the rocky coasts of Provence, biogenic littoral rims develop, built by the coralline Rhodophyte Lithophyllum lichenoides. Remains may be preserved for millenia when submersed in a rising sea environment. These remains can be used as biological indicators of relative sea level variations. The studied stations indicate constant decrease in global speed of relative sea level rise for the last 5 000 years. The Holocene marine transgression seems to stop in Provence around 500 A. D.Les corniches médiolittorales à Lithophyllum lichenoides se développent sur les côtes rocheuses de Provence. Les vestiges de ces bioconstructions peuvent se conserver pendant des milliers d'années. Ils constituent alors des indicateurs biologiques précis des variations relatives du niveau marin. Les stations étudiées indiquent des ralentissements constants des vitesses globales de montée relative du plan d'eau depuis environ S 000 ans. La transgression marine holocène semble s'achever vers 500 ans après J.-C. Nous insistons sur l'absence d'indice de stationnement marin historique supérieur au niveau actuel sur les côtes de Provence.Morhange Christophe, Laborel Jacques, Laborel-Deguen F., Lounnas V., Verrecchia Eric. Indicateur biologique et variations relatives du niveau de la mer sur les côtes rocheuses de Provence depuis 4 500 ans. In: Géologie Méditerranéenne. Tome 20, numéro 2, 1993. pp. 89-100
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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