1,720,983 research outputs found

    Going Beyond Counting First Authors in Author Co-citation Analysis

    Get PDF
    The 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 PDF
    We 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

    Psychotic symptoms and general health in a socially disadvantaged migrant community in Bologna

    No full text
    Background and aims. Several evidences showed that social exclusion and reduced access to primary care and mental health services can lead to urgent health problems among immigrants and can explain their increasing admittance to psychiatric in-patient units and high prevalence of psychotic disturbances. The present cross-sectional study aimed to evaluate general health status, distress and prevalence of psychotic symptoms among Romanian immigrants living in very poor conditions at a neglected hotel in Bologna. In Bologna as in Italy, Romanians are one of the largest immigrant communities. Methods. The Psychosis Screening Questionnaire and General Health Questionnaire-12 were administered to all Romanian immigrants residing at the hotel during two index days, with the help of a Romanian cultural mediator. Socio-demographic, migration and health characteristics were also collected. Results. 68 subjects were evaluated. More than 80% left Romania for economic reasons. 57% of immigrants surpassed the 4-point GHQ-12 threshold of potential mental disorders cases; 21% scored positively at the PSQ. The following factors were found to predict positive PSQ: being affected by chronic illness (OR=9.2, 95%CI=2.1–39.9); taking chronic drug therapy (OR=10.4; 95%CI=1.6–64.7); the development of new health problems after migrating (OR=8.8, 95%CI=2.0–38.3). Immigrants with positive PSQ showed higher mean GHQ-12 scores (5.9±3.5, vs. 3.8±2.75; p=0.02). Conclusions. This community of immigrants living in deprived conditions showed a very high prevalence of distress and psychotic symptoms, related with chronic health problems. More attention should be paid to physical and mental health of social disadvantaged immigrants

    Dispelling the Myths Behind First-author Citation Counts

    Get PDF
    We 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
    corecore