1,722,527 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Criminologia e prevenzione situazionale
No full textSeguendo le teorie criminologiche secondo le quali il criminale è tale per ragioni biologiche o sociali, vi è il rischio di imbrigliare in modo sterile l’analisi delle concause che portano all’evento deviante. Viceversa, un approccio decisamente innovativo è quello fornito da Ronald Clarke, che per primo getta le basi della Criminologia Situazionale, nella quale il contesto ambientale è parimenti fondamentale nel determinare l’evento criminoso rispetto alle cause psicologiche individuali ed a quelle sociali. Prendendo spunto dalla saggezza popolare per la quale “l’occasione fa l’uomo ladro”, l’Autore è riuscito ad adattare in modo scientifico le conoscenze che anche la gente comune può avere in relazione al contesto ambientale nel quale un crimine viene consumato, promuovendo una tra le più brillanti e pratiche teorie criminologiche dei nostri tempi. Fornite le dovute premesse in merito a questo innovativo filone di studi, la relazione presenterà i risultati sperimentali di una indagine preliminare sulle strategie suggerite come più adatte ai fini preventivi, nonché gli spunti di riflessione in merito all’applicazione dei principi teorici alle differenti espressioni criminose, nella consapevolezza della specificità che esse hanno in quanto la risposta ad un determinato crimine può anche avere un effetto opposto su di un altro
Multiplicity results for the supercritical Hénon equation
No full textWe study the Dirichlet problem for the Hénon equation -Δu = |x|αup-1 in the unit ball B ⊂ RN. For N ≥ 4 and a large we prove the existence of positive nonradial solutions for a range of p's including supercritical values
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe 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
Get PDFWe 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
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