1,720,970 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
Occurrence and molecular characterization of Bacillus spp. strains isolated from gnocchi ingredients and ambient gnocchi stored at different temperatures
No full textAmbient gnocchi is a potato-based product with a shelf-life of 12 months at room temperature, due to pasteurisation and incorporation of organic acids. Aim of this study was to investigate the microbiological characteristics of ambient gnocchi and their ingredients. In addition to their industrial formulation, ambient gnocchi were analysed when lactic and sorbic acids were partially or totally removed, at different storage temperatures, to identify the main microbial groups. Floury ingredients were the most contaminated, with total mesophilic count and presumptive Bacillus spp. up to 5 log CFU/g. Industrial gnocchi were stable, while gnocchi without acids showed loads up to 7 log CFU/g after 7 day at 37 °C. Bacillus spp. were isolated and characterized through rMLST, 7-loci MLST, and kSNP3 analysis. Virulence factors and antibiotic resistance determinants were detected in isolates of the Bacillus cereus group. Bacillus subtilis was the most frequently isolated species, showing spoilage potential, as observed by reddish slime on some samples during storage, but also interesting features evidenced by bacteriocin production genes. Therefore, we demonstrated that flour ingredients were the primary sources of contamination, and that Bacillus spp. was the microbial group of greatest interest for both safety and quality of this product
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
Up-date sulla gestione del dolore del bambino in Pronto Soccorso
No full textPain is a frequent symptom in paediatric population, especially in the emergency setting; nevertheless pain is poorly managed in clinical practice. The present paper aims to give an up-to-date analysis concerning paediatric pain in emergency units, as regards epidemiology, assessment, measurement and treatment, through a detailed systematic revision of the literature and an on-going clinical trial assessment carried out by analysing the relevant data available until March 2018. Among the many paediatric pain scales for different ages and situations and according to their efficacy and efficiency, FLACC scale, Wong-Baker scale and FLACC-r or NCCPC-R scale are proposed. Moreover, pharmacological and non-pharmacological strategies should always be considered; innovative strategies, new molecules and route of administration allow adequate therapies to be performed in many clinical situations. Emerging data suggest the need to carry out more research on pain prophylaxis, increase opioid drugs prescription in case of severe pain and reduce primary analgesia time. Therefore, an adequate management of pain in paediatric population in the emergency setting is still a goal to achieve. So, innovative organisational arrangements, training strategies addressed to health professionals, information and research are the instruments to imprint a real change in paediatric pain management in emergency units
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
The first case of botulism in a donkey
Full text linkBotulism, a severe neuroparalytic disease that can affect humans, all warm-blooded animals, and some fishes, is caused by exotoxins produced by ubiquitous, obligate anaerobic, spore-forming bacteria belonging to the genus Clostridium and named botulinum neurotoxin (BoNT)-producing clostridia. This report presents the case of a 3-year-old donkey mare referred for progressive and worsening dysphagia of four days' duration. Her voluntary effort in eating and drinking was conserved, and she was able to slow chew without swallowing. A complete neurological examination was performed, and botulism was strongly suspected. The ability to swallow feed and water returned on the tenth day of hospitalization and improved progressively. The jenny was discharged from the hospital after fifteen days. During the hospitalization, the Italian National Reference Centre for Botulism confirmed the diagnosis: mare's feces were positive for BoNT/B and Clostridium botulinum type B
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