1,720,980 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
Psicofarmaci e polifarmacoterapia come fattori di rischio per le cadute negli anziani istituzionalizzati: uno studio trasversale in una residenza socio assistenziale lombarda
No full textAbbiamo indagato il ruolo della polifarmacoterapia e degli psicofarmaci come fattori di rischio per le cadute negli anziani lungodegenti. È stato condotto uno studio trasversale e sono stati arruolati 414 soggetti: 207 caduti, di cui 44 (21,3%) ♂ e 163 (78,7%) ♀, con un’età media di 84,16±8,3 anni. I neurolettici di prima generazione (OR1,739 CI95%1,047-2,889), le benzodiazepine (OR2,357 CI95%1,5-3,702) e gli stabilizzanti dell’umore (OR1,889 CI95%1,091-3,270) sono risultati fattori di rischio nel modello aggiustato per età, genere e comorbilità. La polifarmacoterapia (≥4 farmaci) è risultata associata ad un maggior rischio di caduta (OR 2,157 CI95%1,447-3,217) quando presente almeno un farmaco di rischio. Quanto riscontrato deve indurre ad una maggiore accortezza prescrittiva all’interno delle Residenze socio assistenziali.Aim of the study was to investigate polypharmacy and psychotropic drugs as risk factors for falls in a Long term Care Setting for elderly patients. In a cross-sectional study we investigated the characteristics of 4I4 subjects: 207 fallen patients 44 (2L3Vo) Cf e 163 (78.7Vo) Q mean age 84.16+8.3 y.o. First generation neuroleptics (ORl.739 CI95Vol.047-
2.889), benzodiazepines (OR2.357 CI95Vol.5-3.702) and mood stabilizers (OR1.889 CI95Vol.09t-3.270) were associated to falls when adjusted for age, sex and comorbidities. Polypharmacotherapy (>4drugs) was a risk factor for falls when associated to a risk medication in the daily regimen only (OR 2.157 CI957o1.447-3.217). What raised has to be taken
into account in the prescriptive activities in a Long term Care Setting for elderly patients
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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
A single case report of male genital self-mutilation in a cannabis user
No full textWe reported on a patient, without previous psychiatric diagnosis, who mutilated his own genitalia during an episode of massive and compulsive cannabis abuse which provoked an acute psychotic stat
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