1,721,118 research outputs found
Multilevel IRT models for the analysis of satisfaction for distance learning during the Covid-19 pandemic
No full textThe Covid-19 pandemic played a relevant role in the diffusion of distance learning alternatives to “traditional” learning based on classroom activities, to allow university students to continue attending lessons during the most severe phases of the pandemic. In such a context, investigating the students' perspective on distance learning provides useful information to stakeholders to improve effective educational strategies, which could be useful also after the end of the emergency to favor the digital transformation in the higher educational setting. Here we focus on the satisfaction in distance learning for Italian university students. We rely on data comprising students enrolled in various Italian universities, which were inquired about several aspects related to learning distance. We explicitly take into account the hierarchical nature of data (i.e., students nested in universities) and the latent nature of the variable of interest (i.e., students' learning satisfaction) through a multilevel Item Response Theory model with students' and universities' covariates. As the main results of our study, we find out that distance learning satisfaction of students: (i) depends on the University where they study; (ii) is affected by some students' socio-demographic characteristics, among which psychological factors related to Covid-19; (iii) is affected by some observable university characteristics
Commitment needed for the prevention of congenital rubella syndrome in Europe. Letter to the Editor
No full textno abstrac
Letter to the editor: commitment needed for the prevention of congenital rubella syndrome in Europe.
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IL PUNTATO, UN ALPEGGIO APUANO - Indagini geobotaniche e diacroniche per un recupero agroambientale
No full textL’alpeggio del Puntato, localizzato sul versante settentrionale delle Alpi Apuane, rappresenta un'unità di paesaggio del tutto peculiare in quanto frutto di un intenso processo di storicizzazione agraria che ne ha determinato la struttura. L’abbandono delle attività agricole silvicole e pastorali ha inciso fortemente sulla sua struttura e sulle su funzioni, determinando, in particolar modo, l’avvio di dinamiche vegetazionali che pongono l’alpeggio al centro di un quadro evolutivo piuttosto complesso ed articolato. L’indagine diacronica integrata, condotta prevalentemente mediante indagini geobotaniche, aereofotointerpretazione delle foto aeree del 1954, 1976, 1996 e lo studio storico dell’alpeggio, ha permesso di individuare nell’area di studio valenze ambientali ma soprattutto socio-culturali di estrema importanza che devono essere rivitalizzate al fine di realizzare il necessario recupero agro-ambientale che l’alpeggio richiede
Commitment needed for the prevention of congenital rubella syndrome in Europe. Letter to the Editor
No full textno abstrac
Normothermic liver perfusion ex situ: a resuscitation tool for hepatic grafts damaged by warm ischemia
No full textGoing 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
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