1,721,065 research outputs found
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
Jihad e Violenza Armata: la grande menzogna
No full textÈ fondamentale considerare che ogni «religione» per diventare tale
abbia bisogno di una fase formativa durante la quale: rivelazione, tradizione,
ortodossia, teologia, giurisprudenza e credo (‘aqida) più in generale,
trovino una corrispondenza di continuità sia riflettendo sulle differenze
emergenti con le altre religioni, che sulla relazione tra geografia,
proselitismo, universalità-settarismo (Afsaruddin 2013; Gleave, Istvan
Kristo-Nagy 2015-2016). Attribuire quindi all’Islam l’esistenza di un
concetto di «guerra santa», dhimma (popoli del Libro), jizya (capitolazione
in riferimento ai non musulmani) ecc. in relazione agli eventi
di pochi anni o decenni successivi alla morte del profeta Muḥammad
(m. 632): in particolare le conquiste arabe, è non solo erroneo, ma inconsistente
proprio in riferimento a quelle fonti religiose, numismatico
archeologiche e storiche nelle quali l’identificazione della prima comunità
di credenti come già musulmana è alquanto dubbia
Postfazione. Alla ricerca di un po' di swing
No full textAlcune considerazioni sulle trasformazioni dell'islam italiano, in particolare rispetto alle forme di rappresentanz
I musulmani e i loro cappellani. Soggettività, organizzazione della preghiera e assistenza religiosa nelle carceri italiane
No full textVariations 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
Change of E-selectin serum levels in rheumatoid arthritis during treatment with etanercept
No full textBackground: Rheumatoid arthritis (RA) is characterised by a local and systemic chronic inflammation with the activation of the vascular endothelium. The most important initiators of vascular adhesion expressed on endothelial cells are the P and E-selectins (von Andrian), that have been detected on the inflamed synovium (McMurray) and in the peripheral blood of RA patients (Littler, McMurray). Moreover, E-selectin, expressed on endothelium, is up-regulated after exposure to TNF-alpha (McMurray). Objectives: Aim of the study was the detection of soluble E-selectin and P-selectin serum levels during anti-tumor necrosis factor (TNF) alpha therapy. Methods: We studied 18 patients with RA [M/F=2/16; mean age=49.5 (range: 22-70) yrs; mean disease duration=109 (range:18-240) months], during a 24-week-treatment of etanercept (25 mg s.c. twice weekly), evaluating the main clinical and laboratory parameters of disease activity. In each RA patient we determined soluble E-selectin and P-selectin serum levels by ELISA before and after 4 and 24-weeks. Results: Respect to baseline, the number of painful (p < 0.0003) and swollen (p < 0.0003) joints, visual analog scale of pain (p < 0.0004), HAQ (p < 0.0003), ESR (p < 0.009) and CRP (p < 0.008) were significantly reduced after etanercept 24-week-treatment. At baseline sE-Selectin levels were significantly increased in patients with RA (p < 0.00005) as compared to 15 healthy controls, matched for sex and age. We observed that sE-selectin levels were significantly reduced, respect to baseline, at 4 (p< 0.01) and 24 (p < 0.005) week-treatment with etanercept. These levels were also decreased at 24 weeks as compared with 4 weeks of anti-TNF therapy (p < 0.01). P-selectin serum levels didn't change during etanercept treatment. Conclusion: Our results suggest that TNF-alpha blockers could play a role in the inhibition of some pathways of adhesion molecule cascade in RA. In particular, etanercept seems to down-regulate serum levels of sE-selectin, that represents a specific marker of endothelial cell activation during systemic inflammation.1. von Andrian UH, Mackay CR: T-cell function and migration. N Eng J Med 5: 1020-1034, 2000.; 2. Littler AJ, Buckley CD, Wordsworth P, Collins I, Martinson J, Simmons DL: A distinct profile of six soluble adhesion molecules (ICAM-1, ICAM-3, VCAM-1, E-selectin, L-selectin and P-selectin) in rheumatoid arthritis. Br J Rheumatol 36: 164-169, 1997.; 3. McMurray RW: Adhesion molecules in autoimmune diseases. Sem Arthritis Rheum 25: 215-233, 1996
- …
