1,722,187 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
Special techniques for the estimation of the ACF of spherically invariant random processes
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The Genomics of Multiple Myeloma and Its Relevance in the Molecular Classification and Risk Stratification of The Disease
No full textAppropriate 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
Incidenti nucleari, responsabilità e protezione della salute dell'uomo
No full textAbstract
Il 26/4/1986, in uno dei reattori della centrale nucleare di
Chernobyl, nelle vicinanze di Kiev, in Ucraina, si verificò un
grave incidente: evento di straordinaria importanza sia per le
conseguenze avutesi in termini di danni sia per l'effetto monitorio che ne scaturì. Per la prima volta, infatti, risultarono drammaticamente evidenti significative lacune nella normativa internazionale in tema di risarcimento dei danni, nonché l'intrinseca insufficienza degli strumenti giuridici esistenti: i limiti risarcitori previsti nelle Convenzioni internazionali e nei vari sistemi nazionali vigenti apparvero del tutto inadeguati di fronte alle vaste proporzioni dei danni di entità complessiva incalcolabile. L'enorme preoccupazione che l'incidente destò, anche a causa della formazione di una nube radioattiva che sospinta dai venti venne ad interessare molti Paesi europei, determinò una grande spinta verso la ricerca di soluzioni sul piano internazionale, essendosi ormai compreso che il profilo della sicurezza e della prevenzione dei danni trascendeva l'ambito dello Stato in cui sorge
l'impianto interessato dall' incidente e che il problema della re-
sponsabilità in caso di incidente nucleare coincide sostanzial-
mente con quello dell'esistenza di Convenzioni di portata universale che garantiscano alle vittime la possibilità di un risarcimento sicuro e di facile ottenimento
Affine warping using H263 overlapped motion compensation with proper weighting coefficients
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