1,721,136 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
Sammenhenger mellom alkoholbruk og suicidal atferd på individnivå: en oversikt
No full textAlkoholmisbruk er en viktig risikofaktor for selvmord og annen villet egenskade. Denne artikkelen gir en oversikt over empirisk forskning som har belyst sammenhenger mellom alkoholmisbruk og suicidal atferd på individnivå og viser at de observerte sammenhengene er både betydelige, men også varierende mellom studier. Ved selvmord finner man at mellom 15 og 61 % hadde et alkoholmisbruk, og blant personer med alkoholmisbruk er risikoen for selvmord om lag 10 ganger høyere enn i befolkningen ellers. Også alkoholberuselse er en viktig risikofaktor for suicidal atferd; ved selvmord finner man at mellom 10 og 69 % var alkoholpåvirket. Artikkelen drøfter mulighetene for at en persons alkoholmisbruk eller alkoholberuselse kan ha betydning for suicidal atferd hos andre, som for eksempel barn eller andre nære pårørende. Artikkelen diskuterer også ulike underliggende mekanismer som kan forklare de observerte sammenhengene. Alcohol abuse is a major risk factor for suicide and other deliberate self harm. This article provides an overview of empirical research that has examined the relationship between alcohol abuse and suicidal behavior at the individual level and shows that the observed correlations are not only significant, but also varying between studies. Among suicides, it is found that 15 to 69 % of the deceased had alcohol abuse and among alcohol abusers the suicide risk is about ten times that of the general population. Also alcohol intoxication is an important risk factor for suicidal behavior; among suicides it is found that 10 to 69 % were under the influence of alcohol at the time of death. The article discusses the possibility that a person's alcohol abuse and alcohol intoxication may affect suicidal behavior in others, such as in children or other close relatives. Finally, the article discusses different underlying mechanisms that can explain the observed correlations
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