1,720,986 research outputs found
Dataset del progetto UniverS-Ita
No full textIl dataset contiene il quadro complessivo dei metadati dei testi raccolti nell'ambito del Progetto PRIN 2017 UniverS-Ita. L'italiano scritto degli studenti universitari: quadro sociolinguistico, tendenze tipologiche, implicazioni didattiche. Il progetto aveva lo scopo di mappare le competenze nella scrittura formale della popolazione universitaria italiana, attraverso un campione di 2.137 studentesse e studenti di 44 atenei, rappresentativo per aree geografiche e disciplinari. I/le partecipanti hanno redatto un testo (di 250-500 parole) su una traccia comune e compilato un questionario sociobiografico di 58 domande (non tutte compaiono nel dataset in quanto alcune non hanno ottenuto un numero statisticamente rilevante di risposte). I testi prodotti sono poi stati analizzati sia quantitativamente, sia qualitativamente. Grazie a questo strumento è possibile individuare correlazioni sistematiche tra caratteristiche dei testi e profili degli e delle scriventi
Community involvement in tourism: Exploring the place image guided by the locals
Full text linkThis paper is intended as a contribution to the debate on tourism sustainability and the need to involve local communities in planning practices, key to sustainable tourism. The community-based approach has been widely theorized and used in projects of sustainable tourism development, because it tends to maximize the participation of local population from the earliest stages of development and affect tourism policies, while also responding to the changing needs of contemporary tourists, especially in terms of development of niche and special-interest tourism. The only exception is in the construction of the tourist imaginary: the involvement of the community in this fundamental sphere has always been scarce, with the result that often there is a strong imbalance - even dissonance - between the image promoted through the marketing, that continuously re-shaped by the locals and that experienced by the tourists. This contribution will explore the creation of tourism imaginary as negotiated activity
Contribution of Splenic Resistance Arteries to Splanchnic Blood Overflow in Cirrhosis
No full textBackground: In liver cirrhosis, a marked splanchnic vasodilation causes an increase in portal blood flow, contributing to the development of portal hypertension. Aim: To evaluate if, in experimental cirrhosis, a different vascular reactivity exists between splenic and mesenteric components of the splanchnic circulation. Methods: Liver cirrhosis was induced in Sprague Dawley rats by common bile duct ligation. In sections of splenic and superior mesenteric arteries, cumulative dose–response curves were obtained. mRNA expression of endothelial nitric oxide synthase (eNOS), inducible NOS (iNOS), and prostaglandin I2 synthase (PTGIS) was evaluated. Results: In cirrhotic rats, mesenteric but not splenic arteries showed a significant increase in endothelium-dependent relaxation to acetylcholine. In control and cirrhotic rats, COX inhibition alone did not significantly change the response of mesenteric arteries to acetylcholine; after inhibiting also NOS, the relaxation was completely abolished in control but only partially decreased in cirrhotic rats. After the inhibition of COX and NOS, the relaxation to acetylcholine was similarly decreased in splenic arteries from control and cirrhotic animals. The contraction induced by phenylephrine of both mesenteric and splenic arteries was decreased in cirrhotic rats. PTGIS mRNA expression did not differ in splenic and mesenteric arteries from control and cirrhotic rats; in cirrhotic rats, eNOS and iNOS mRNA expression was increased in mesenteric but not in splenic vascular bed. Conclusion: In cirrhotic rats, a decreased splenic arterial response to vasoconstrictors, rather than an increased response to vasodilators, contributes to splanchnic vasodilation, while in mesenteric arteries also an increased response to vasodilators secondary to, but not only, eNOS and iNOS overexpression, plays a role
L’italiano scritto all’università: prime elaborazioni statistiche di dati linguistici e sociobiografici
No full textIl contributo presenta alcune correlazioni statisticamente rilevanti tra le caratteristiche qualitative e quantitative dei testi prodotti da studenti e studentesse nell'ambito del progetto Univers-ITA e i dati sociobiografici, ricavati dai questionari abbinati ai testi. L'analisi mostra innazitutto come vi siano corrispondenze sistematiche tra particolari classi di studenti e sudentesse e alcune caratteristiche dei testi (es. chi legge di più usa un lessico più vario; chi ha studiato lingue classiche produce testi più prossimi all'italiano standard normativo; ecc.). Inoltre rivela come alcune delle caratteristiche dei testi stessi tendano a concorrere. Nello specifico, emerge una co-occorrenza significativa dei tratti che denotano una certa difficoltà nelle attività di pianificazione dei testi
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
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