1,721,180 research outputs found
The contribution of the Italian Epidemiology to the European research on drugs and alcohol
No full textIs there an immigrant-gender gap in education? An empirical investigation based on PISA data from Italy.
Full text linkGender and origin background are widely accepted in the economics of education literature as factors that highly correlate with educational outcomes. However, little attention has been devoted so far to the interaction of these two dimensions. We use Italian data from PISA 2015 to investigate potential immigrant-gender gaps in education. We find that, as expected, girls outperform boys in reading and are outperformed by them in math and science. In addition, immigrant students’ scores are persistently below those of natives. However, interestingly, we find that being immigrant and female does not imply a double disadvantage in math and science. On the contrary, immigrant girls slightly compensate for the immigrant gap in all disciplines. Moreover, the wider gap we find is that of immigrant boys in reading: it ranges from to 0.66 to 2 school years with respect to native boys. Language spoken at home is one of the main cofactors affecting immigrant boy’s scores. Targeted policies should therefore be implemented
Una (non) conclusione
No full textIl contributo porta a sintesi alcuni nodi del volume: i bambini, principali protagonisti di questa narrazione, paiono restituire agli adulti quel modo di stare in relazione col mondo che è di coloro che sanno vivere ogni incontro con sensibilità e intuizioni non gravate dal peso di idee preordinate o pregiudizi e mostrano come ogni “relazione con” rappresenti la possibilità di un nuovo inizio, di un diverso “poter essere”
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
Design of low-cost synchronous machine to prevent demagnetization
Full text linkThe request for high efficiency motor paves the way for the replacement of induction motors with permanent magnet synchronous motors. Although the efficiency is increased, for medium and high power, the current ripple causes significant additional losses in the magnet and lamination; and, high temperature can lead to demagnetization. In this paper, a new rotor topology is proposed and compared to a traditional surface permanent magnet rotor to reduce the magnet losses and protect them from demagnetization. A reference surface permanent magnet machine is compared with the proposed one in terms of performance and magnet losses. Both analytical and experimental analysis are carried out and 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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