1,720,981 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
Distribution of SGI1 among clinical multidrug-resistant strains of Salmonella entericaserotype thyphimurium from Southern Italy, 2006/2008
No full textGenetics basis of antomicrobial resistance in clinical multidrug-resistant strains of Salmonella typhimurium, southern Italy
No full textVariations 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
Analisi del processo invasivo di mutanti di Shigella flexneri alterati nella circolazione del calcio.
No full textGenetics basis of antimicrobial resistance strains of Salmonella typhimurium, southern Italy
No full textAppropriate 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
Phenotypic and genetic traits of Salmonella enterica subsp. serovar Typhimurium strains causing salmonellosis foci in rabbit farms from Southern Italy in 1999-2003.
No full textIn this study, we characterised the Salmonella Typhimurium strains responsible for four outbreaks which
occurred in distinct rabbit farms (Southern Italy) from 1999 to 2003. Strains were typed by Pulsed Field
Gel Electrophoresis (PFGE) and the genetic basis of antimicrobial resistance was established. A major
group of clonally related isolates, pulsotype STYMXB.0061, accounted for three of the salmonellosis foci.
Strains were resistant to streptomycin, chloramphenicol, tetracycline, ampicillin and sulphonamides
encoded respectively by the aadA2, floR, tetG, blaPSE-1, sul1 gene cluster harboured by a Salmonella Genomic
Island 1. The clonally related group of isolates included strains phage type DT104, DT12 or undefined
type (NT). The fourth salmonellosis focus was caused by a strain pulsotype STYMXB.0147, resistant to sulphonamides
(encoded by sul2) and phage type U302. Results provided first molecular characterisation of
S. Typhimurium strains isolated from rabbit farms in Italy and highlighted the presence of the pulsotype
STYMXB.0061 even before its wide detection among human clinical isolates collected in Italy in the mid
2000s from clinical case
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