1,720,974 research outputs found
Surgical retrieval of a degenerated Sapien 3 valve after 29 months.
No full textA 70-year-old man developed heart failure due to severe mixed disease of a degenerated transcatheter aortic valve prosthesis. The patient underwent retrieval of the transcatheter aortic valve and implantation of a 25-mm bioprosthesis through a redo sternotomy
COVID-19: Il difficile equiliobrio tra infodemia, fake news e corretta informazione
No full textIl web sebbene abbia allargato la platea del mondo dell’informazione allo stesso tempo ha ridotto i controlli sulla
qualità e la veridicità delle news, una vera e propria “infodemia”.
Una corretta informazione, o al contrario false notizie, possono influenzare i comportamenti quotidiani con ripercussioni sulle condizioni di salute future, ancora di più oggi in relazione all’attuale pandemia. L’obiettivo della nostra indagine è stato quello di dimostrare come una corretta informazione, o al contrario le false notizie, possono
influenzare i comportamenti quotidiani con ripercussione sugli atteggiamenti da adottare in tempi di pandemia.
Ai fini dell’indagine è stato somministrato un questionario ad un campione di 872 persone, strutturato in sei sezioni, riguardanti le fonti di informazione relative alla pandemia attuale, modalità di trasmissione e comportamenti
utili per tenere lontana l’infezione, gli stati d’animo durante i periodi di “chiusura”, la fiducia nel vaccino. Il questionario, distribuito online, è stato costruito utilizzando la piattaforma Google forms ed era composto di 33 items,
molti dei quali proposti dalla Survey questionnaire del WHO sul tema “Health information on COVID-19” ed è stato
distribuito online.
I dati delle risposte sono stati elaborati e analizzati statisticamente mediante test del χ2, per p<0.05.
Nello specifico è stato possibile affermare, con un valore di significatività p<0,05, che il livello di istruzione degli
intervistati non ha influenzato la risposta data alla domanda relativa alla conoscenza di una serie di affermazioni
generali riguardanti il COVID-19, né la conoscenza di quelli che sono i suoi principali sintomi. Il livello di istruzione
e l’età non sono inoltre correlati alla conoscenza delle modalità con cui prevenire la malattia in questione. Il grado
di istruzione risulta invece essere correlato (p<0.05) alle risposte date alla domanda relativa alle modalità con cui
si diffonde il COVID-19, ed influenza sia la propensione ad informarsi e sia a fare il vaccino appena possibile. L’età,
infine, non influenza il parere espresso in merito ai comportamenti messi in atto per non ammalarsi di COVID-19
con un valore di χ2 = 166.69 (χ2 = 36.42, α = 0.05, ν = 24).
Risulta fondamentale ed urgente, dunque, una regolazione dei principali mass-media, in attesa di precise norme
legislative, che filtrino l’enorme massa di cattive informazioni che mai come in questa pandemia hanno diffuso e
diffondono notizie che allontanano il comune cittadino dalla verità scientifica, ritardando la lotta al nemico invisibile che continua a mietere un elevato numero di vittime
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
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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