1,721,235 research outputs found
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
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
Chert Acquisition through Final Upper Palaeolithic and Mesolithic: A territory contraction in southwestern France?
No full textInternational audienc
Chert acquisition in the final Upper Palaeolithic and Mesolithic: Territory contraction in southwestern France?
No full textInternational audienceOur study has been performed on several assemblages from several sites located in the Quercy region in the South of France (Murat, Peyrazet, Mirande 2, Cuzoul de Gramat and Fontfaurès) and attributed to the Badegoulian, Magdalenian, Azilian, Laborian and Mesolithic periods. The analysis carried out on a diachronic perspective allowed us to highlight several specific techno-cultural aspects (such as the size and exploitation of the territory) from Late Glacial to Mesolithic groups.This work analyses the modifications of the territorial borders of these five different techno-complexes through the acquisition and diffusion of raw materials with the main objective being an understanding of the variations of the territory size and the rhythms of the increases and decreases of its limits.We observe very small acquisition territories for the Badegoulian with few long-distance acquisitions. Medium- and long-distance acquisitions increase during the Upper Magdalenian and Early Azilian before decreasing during the Laborian. Long-distance materials disappeared completely during the Mesolithic period
Tri d'un tamis 2mm sur la fouille archéologique des Jonquilles
No full textTamisage de sédiments par des étudiantes bénévoles sur la fouille mésolithique de la grotte des Jonquilles, située dans la forêt de la Braunhie (Caniac-du-causse, Lot). Le tamisage, ici à 2mm, permet de récupérer les fragments d'os et de silex
Fouille de la grotte mésolithique des Jonquilles, à Caniac-du-Causse, Lot (46), vue de l’entrée depuis l’extérieur de la cavité
No full textExcavation of the mesolithic site of the Jonquilles cave, commune of Caniac-du-Causse, Lot (46). This operation is led by the team of Guilhem CONSTANS since 2021. This small cavity is located in the bottom of a doline and sheltered occupations of hunter-gatherers of the Mesolithic.Fouille du site mésolithique de la grotte des Jonquilles, commune de Caniac-du-Causse, Lot (46). Cette opération est menée par les équipes de Guilhem CONSTANS depuis 2021. Cette petite cavité se situe dans le fond d’une doline et a abrité des occupations de chasseurs-collecteurs du Mésolithique
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