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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
Rôle des informations visuelles dans la production de lettres cursives chez l’enfant et l’adulte
No full textThe role of visual information in the production of cursive letters in children and adults
The present experiment aims at studying the evolution with age of the role of visual information in the production of isolated cursive letters. Children aged 8, 9 and 10 year-old and adults were asked to write different cursive letters (a, o, l, m and p) under three experimental conditions: with a normal vision, under an opaque open box that prevented vision from the hand and the trace, or without any visual information. The partial or complete withdrawal of visual information had a much greater effect on the children’s performances than on those of adults. Only an increase of pressure was observed in adults following the removal of visual information, while children compensated for the absence of visual feedback by increasing movement length, movement velocity, and pressure. By contrast, they maintained movement duration constant throughout the conditions. However, a non monotone development with age of some of these kinematic parameters was revealed. Moreover, the effect of visual information withdrawal on movement parameters differed as a function of the type of letter produced. Globally, these results showed that children relied much more than adults on visual feedback when they wrote, even for the simple production of isolated letters.Notre recherche a pour objectif l’étude du développement du rôle des informations visuelles sur la production de lettres cursives. Des enfants de 8, 9, 10 ans et des adultes ont pour tâche d’écrire différentes lettres cursives (a, o, l, m et p) dans 3 conditions: normale (informations visuelles disponibles), la main placée sous un cache, avec les yeux fermés. L’absence de feedback visuel entraîne une modification des caractéristiques des mouvements plus importante chez les enfants que chez les adultes. Seule une augmentation de la pression est observée chez les adultes, alors que les productions des enfants subissent une augmentation de la vitesse, de la longueur des trajectoires formant les lettres, de la fluidité et de la pression. Un développement non monotone avec l’âge de certains indices est toutefois révélé.Chartrel Estelle, Vinter Annie. Rôle des informations visuelles dans la production de lettres cursives chez l’enfant et l’adulte. In: L'année psychologique. 2006 vol. 106, n°1. pp. 43-63
Imposer des contraintes de taille ou de vitesse sur l’écriture chez l’enfant : des bénéfices ou non ?
No full textIntroduction La maîtrise des habiletés élémentaires d’écriture, à savoir la réalisation des mouvements de formation des lettres, est un élément important de la réussite scolaire. Fayol et Miret (2005) ont, par exemple, montré que les enfants ayant une moindre maîtrise graphique sont moins performants à une épreuve de dictée. Ainsi, l’échec dans l’apprentissage de la production des lettres a des répercussions sur les processus de plus haut niveau impliqués dans la production de textes (Berning..
Imposer des contraintes de taille ou de vitesse sur l’écriture chez l’enfant: Des bénéfices ou non?
No full textInternational audienc
Rôle des informations visuelles dans la production de lettres cursives chez l’enfant et l’adulte
No full textThe role of visual information in the production of cursive letters in children and adults
The present experiment aims at studying the evolution with age of the role of visual information in the production of isolated cursive letters. Children aged 8, 9 and 10 year-old and adults were asked to write different cursive letters (a, o, l, m and p) under three experimental conditions: with a normal vision, under an opaque open box that prevented vision from the hand and the trace, or without any visual information. The partial or complete withdrawal of visual information had a much greater effect on the children’s performances than on those of adults. Only an increase of pressure was observed in adults following the removal of visual information, while children compensated for the absence of visual feedback by increasing movement length, movement velocity, and pressure. By contrast, they maintained movement duration constant throughout the conditions. However, a non monotone development with age of some of these kinematic parameters was revealed. Moreover, the effect of visual information withdrawal on movement parameters differed as a function of the type of letter produced. Globally, these results showed that children relied much more than adults on visual feedback when they wrote, even for the simple production of isolated letters.Notre recherche a pour objectif l’étude du développement du rôle des informations visuelles sur la production de lettres cursives. Des enfants de 8, 9, 10 ans et des adultes ont pour tâche d’écrire différentes lettres cursives (a, o, l, m et p) dans 3 conditions: normale (informations visuelles disponibles), la main placée sous un cache, avec les yeux fermés. L’absence de feedback visuel entraîne une modification des caractéristiques des mouvements plus importante chez les enfants que chez les adultes. Seule une augmentation de la pression est observée chez les adultes, alors que les productions des enfants subissent une augmentation de la vitesse, de la longueur des trajectoires formant les lettres, de la fluidité et de la pression. Un développement non monotone avec l’âge de certains indices est toutefois révélé.Chartrel Estelle, Vinter Annie. Rôle des informations visuelles dans la production de lettres cursives chez l’enfant et l’adulte. In: L'année psychologique. 2006 vol. 106, n°1. pp. 43-63
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