1,721,026 research outputs found

    Paradoxes des fonctions de concentration de C. Gini

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    Combessie Jean-Claude. Paradoxes des fonctions de concentration de C. Gini. In: Revue française de sociologie, 1985, 26-4. pp. 653-658

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    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

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    “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

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    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

    Dispelling the Myths Behind First-author Citation Counts

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    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

    Author Index

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    Nao informado

    koamabayili/VECTRON-author-checklist: VECTRON author checklist

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    We have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used

    Note sur quelques indicateurs globaux de l'inégalité : C. Gini, V. Pareto, P. Lévy

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    Marc Barbut : Anmerkungen zu einigen globalen Indikatoren der Ungleichheit : C. Gini, V. Pareto, P. Lévy. Diese Notiz will sich nur pädagogisch. Ihr Zweck ist, an die Effizienz, aber auch an die Grenzen zu errinern, die einige bewerte Instrumente aufzeigen zum Vergleich der wirtschaftlichen und sozialen Ungleichheiten : die Konzentrationskurve von Corrado Gini sowie, wenn die festgestellten Verteilungen richtig aufeinander abgestimmt sind, der Koeffizient β von Vilfredo Pareto. Es werden einige der einfachen mathematischen Eigenschaften und deren Interpretation angegeben. Der Aufbau dieser Indikatoren wird illustriert über Angaben zur zeitlichen Entwicklung der Schulausbildung innerhalb der Sozialkategorien.Marc Barbut : A note on a few global indicators of inequality : С. Gini, V. Pareto, P. Levy. The object of this note is merely pedagogical, to recall the effectiveness and also the limits of a few well-tested instruments used for comparing economic or social inequalities : Corrado Gini's concentration curve and, in cases where the observed distributions are fitted satisfactorily, Vilfredo Pareto's β coefficient. An indication is provided of some of their simple mathematical properties and their interpretation. Data on the temporal evolution of schooling by socio-professional categories provides an illustration of the contruction of these indicators.Marc Barbut : Note sur quelques indicateurs globaux de l'inégalité : C. Gini, V. Pareto, P. Levy. Cette note n'a d'autre visée que pédagogique. Son objet est de rappeler l'efficacité, mais aussi les limites, qu'ont, pour la comparaison des inégalités économiques ou sociales, quelques instruments éprouvés : la courbe de concentration de Corrado Gini et, lorsque les distributions observées s'ajustent convenablement, le coefficient β de Vilfredo Pareto. On indique quelques-unes de leurs propriétés mathématiques simples et l'interprétation de celles-ci. La construction de ces indicateurs est illustrée sur des données relatives à l'évolution temporelle de la scolarisation par catégories socio-professionnelles.Marc Barbut : Nota sobre algunos indicadores globales de la desigueldad : C. Gini, V. Pareto, P. Levy No tiene esta nota otro propósito sino pedagógico. Quiere recordar la eficacia pero también los limites que tienen algunos instrumentes -probados para la comparación de las desigualdades económicas y sociales : la curva de concentración de Corrado Gini, y, cuando se ajustan convenientemente las distribuciones observadas, el coeficiente β de Vilfredo Pareto. Se indican algunas de sus propiedades matemáticas simples y su interpretación. Se ilustra la construcción de esos indicadores por datos relativos con la evolución temporal de la escolarización por categorias socio-profesionales.Barbut Marc. Note sur quelques indicateurs globaux de l'inégalité : C. Gini, V. Pareto, P. Lévy. In: Revue française de sociologie, 1984, 25-4. pp. 609-622
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