1,721,021 research outputs found
Donne e uomini migranti. Storie e geografie tra breve e lunga distanza
No full textIl volume raccoglie i contributi di una ricerca finanziata dal MUR (Prin 2005) dedicata allo studio delle migrazioni interne e internazionali in e dall'Italia tra il XVII sec. e il XX sec. Quanto pesa, nelle scelte migratorie, l'idea di andare all'estero o di restare in patria? Perché in molti casi gli uomini e le donne prendono la strada delle migrazioni internazionali anziché tentare un'emigrazione interna? Il libro ricostruisce i percorsi di mobilità geografica individuale e familiare tra età moderna e contemporanea, equiparando gli itinerari interni e quelli esterni ai confini nazionali ed evidenziando il ruolo che nella decisione migratoria hanno avuto le relazioni sociali degli individui. In questo volume a più mani, opera di alcuni tra i maggiori esperti della materia, si esplorano aspetti finora trascurati nella ricostruzione delle dinamiche migratorie. A giustificarle sono infatti chiamati fattori nuovi, quali il denaro e le relazioni di credito: proprio nei migranti, nel loro ruolo di prestatori di moneta, è individuato uno degli elementi forti di radicamento nei luoghi di arrivo. Altro fenomeno poco noto è quello dell'ingresso degli stranieri in Italia durante l'Ottocento. Gli autori si interrogano sulle ragioni di queste migrazioni, sul modo in cui i migranti hanno utilizzato le risorse nazionali, etniche e religiose per negoziare spazi e privilegi. Vengono alla luce geografie della mobilità più complesse e stratificate del semplice spostamento da un luogo di partenza a uno di arrivo: spesso si tratta di una circolazione che interessa territori multipolari e percorre la linea delle generazioni
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
Pollution of Calich lagoon. Part I. Heavy metals
No full textThe concn. of Cd, Pb, Zn, Ni, Cu, Cr, and Hg in the waters, algae, and fish of Calich (Sardinia) lagoon were detd. Considering the region, the waters are not polluted by heavy metal
Total content of mercury, lead, cadmium, and chromium in samples of the fauna and flora of S. Gilla lagoon (Cagliari).
No full textIn fish, crustaceans, and mollusks from the S. Gilla lagoon, the levels of Hg, Pb, Cr, and particularly those of Cd were high. Thus, the human consumption of such specimens should be severely limited in order not to exceed the World Health Organization's max. limits for ingestion of such metals
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
Postpartum ovarian vein thrombosis: an unpredictable event: two case reports and review of the literature
No full textOvarian vein thrombosis (OVT) is a rare but serious postpartum complication that, in most cases, occurs in the right ovarian vein. Certain diagnosis, following clinical suspect because of lower quadrant tenderness and fever that alone does not respond to adequate broad-spectrum antibiotics, is now based on computed tomography (CT), although other imaging techniques, such as color Doppler ultrasonography and magnetic resonance (MR) imaging, are useful. Heparin and intravenous antibiotics are the mainstay of treatment so as to avoid laparotomy. We report on the management of two cases of postpartum OVT
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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