1,720,960 research outputs found
Oltre la seconda modernità. La teoria sociologica di fronte alla digitalizzazione, il cambiamento climatico e i nuovi rapporti sud/nord del mondo
No full textViviamo in un’epoca di profondi cambiamenti che stanno rimettendo in discussione la struttura stessa delle nostre società cresciute sulla spinta della globalizzazione e sull’eredità politica della caduta del Muro di Berlino. Se nonostante alcuni eventi di rottura come l’11 settembre 2001 o la grande crisi economica del 2007-2009, fino a qualche anno fa si poteva ancora affermare che le nostre società vivessero in una condizione post-apocalittica e post-storica – nel senso che il ripetersi delle grandi tragedie del passato sembrava ai più ormai impossibile – questo giudizio oggi non è più valido. Annunciata dalla pandemia di Covid-19, la nuova era rimette al centro drammatici processi di mutamento come il cambiamento climatico, lo spettro della guerra mondiale o le conseguenze di un’incontrollata transizione digitale. Le contraddizioni messe in moto dalla globalizzazione esplodono mettendo l’umanità di fronte ad una scelta decisiva: cambiare radicalmente oppure perire. Il presente volume intende riflettere su questo scenario interrogandosi sul modo in cui la teoria sociologica può offrire un contributo nel fronteggiare queste sfide. Al centro del volume si pone quindi l’analisi critica di una categoria chiave del dibattito delle scienze sociali: quella di modernità – o meglio di seconda modernità – sulla base della quale le donne e gli uomini del mondo globale hanno continuato a pensare la loro esperienza sociale e organizzato la società e che, oggi, appare di nuovo il punto di partenza per immaginare e costruire il futuro
La modernità di Harriet Martineau. La società in America, la prima ricerca empirica sulla democrazia americana
No full textL'Altro come "oggetto d'odio": meccanismi di rifiuto e strategie di espulsione sociale nelle metropoli contemporanee
No full textIl filosofo sudcoreano Byung-Chul Han ha scritto, in un recente volume,
che “il tempo in cui c’era l’Altro è passato”. Tale affermazione sintetizza perfettamente le trasformazioni che hanno caratterizzato i complessi meccanismi alla base della costruzione del legame sociale nella società
contemporanea. Il nostro modo di vivere, di osservare e rappresentare la
realtà che ci circonda, ha assunto un carattere puramente conservativo e
difensivo a tal punto che, come “cittadini globali”, privilegiamo, ormai
da tempo, un’immagine della città composta per lo più da quegli spazi
che rimuovono la minaccia di qualsiasi contatto sociale. Tutto ciò ha generato inediti meccanismi di espulsione dell’Altro soprattutto quando
quest’ultimo assume le fattezze dello straniero, del povero e del diverso
Prevention of deep venous thrombosis by a new low molecular weight heparin (Fluxum) in cardiac surgery
No full textThe prophylactic deep venous antithrombotic efficacy of a low molecular weight heparin (LMWH) was compared with traditional unfractionated calcium heparin in 39 patients submitted to cardiac surgery. The patients were allocated at random to receive either LMWH-Fluxum 3200 IUaXa daily (Group A: 20 patients) or calcium heparin 5000 IU three times daily (Group B: 19 patients). Both treatments were started on the first day after surgery and continued over the fourth postoperative days. One or more risk factors for deep venous thrombosis in addition to the cardiac pathology were present in all the patients of group A and in 13 (72.2%) of group B. Mean times of surgery, blood loss during the perioperative period and number of blood units transfused in both groups were not statistically significant. The deep venous system was investigated by continuous wave Doppler and real time colour Echotomography. No evidence of thrombosis was detected in the two groups. Side effects and subcutaneous hematomas were present in only four patients of group B. Both drugs showed good tolerance, provoking no variations of the main laboratory parameters. We conclude that Fluxum (LMWH) for the efficacy and convenience given by a single daily dose, could represent an alternative choice in the prevention of deep venous thrombosis in cardiac surgery
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
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