1,720,982 research outputs found
Stili di vita e patologie cronico-degenerative nella popolazione >= 65 anni iscritta nell'osservatorio epidemiologico dell'Area Vasta Nord Ovest della Regione Toscana
No full textDalle District Health Authority ai Primary Care Trust: i fattori di una complessa evoluzione
No full textQualità delle acque nelle strutture sanitarie: normative nazionali e linee guida comunitarie
No full textL’associazione tra la mutazione V600E del gene BRAF e la presenza di invasioni extratiroidee del PTC:revisione della letteratura e meta-analisi
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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
Progetto “Alimenti con health claim ex Reg. 1924/2006”: epidemiologia della scelta, comprensione dell’etichetta e percezione degli effetti sulla salute
No full textApplicazione di un piano integrato di gestione del rischio idrico da Legionella in un’Azienda Ospedaliera Universitaria e verifica dell’efficacia a lungo termine delle misure di controllo
No full textThe WHO Guideline for Legionella and the Prevention of Legionellosis advocate that a water safety plan has to be established in the health care settings for the water risk management. Elements of the risk management plan are active surveillance for infections caused by waterborne pathogens, standard operating procedures for sanitization, maintenance and operation of water systems, and scheduled controls on water samples collected from significant environmental sources.
This paper describes the results of a five-year monitoring programme applied to the water-distribution system of the University Hospital of Pisa (Italy) to evaluate the efficacy of an integrated water safety plan in controlling Legionella spp. colonization of the potable water system. Moreover, the impact of the safety plan on the ecology of Legionella in the water network was evaluated by studying the genetic variability of the strains isolated prior to and throughout the application of continuous chlorine-dioxide treatment.
After 45 months of water hyperchlorination, Legionella spp. was still present but the positive supply points were reduced by 53%, the samples exceeding 103 CFU/L were cut down by 44% and the mean counts showed a decrease of 95%. The majority of the isolates belonged to Legionella pneumophila serogroup 1 (160/161: 99%). Molecular typing, carried out on 63 isolates (39% of the positive samples) selected on space and temporal criteria, indicated the circulation and the persistence in the hospital environment of three prevalent clones of L. pneumophila Wadsworth. Two clones were predominant and pre-existing sanitation, the other was isolated only after three years of water treatment. Despite the ineffectiveness of chlorine dioxide in eradicating L. pneumophila, the risk management plan adopted was effective in preventing any further case of nosocomial legionellosis
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