1,720,979 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
Dimensionality of Space-Time as a Gauge-Invariance Parameter in Yang-Mills Calculations
No full textURL: http://www-spht.cea.fr/articles/T93/004 http://fr.arxiv.org/abs/hep-ph/9302310International audienceIt is described how the dimensionality of space-time can be used to check the gauge {\sl invariance\/} of perturbative calculations in pure Yang-Mills theories. The discussion is illustrated by examples drawn from quarkless QCD at finite temperature. The inclusion of quarks and the use of background field gauges is briefly discussed
Some thoughts on a nonlinear Schrödinger equation motivated by information theory
No full text10.1007/s11232-007-0085-1Theoretical and Mathematical Physics15211012-101
An approximate expression for the large angle period of a simple pendulum
No full text10.1088/0143-0807/25/1/006European Journal of Physics25137-39EJPH
Information-theoretic corrections to black hole area quantisation
No full textInternational Journal of Modern Physics A2418-193561-3563IMPA
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
Information measures for inferring quantum mechanics
No full text10.1088/0305-4470/38/27/009Journal of Physics A: Mathematical and General38276231-623
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