1,721,169 research outputs found
I Metasedimenti della Zona Ivrea-Verbano nell'area di Premosello (Val d'Ossola).
No full textIn the Ossola Valley the exposed lower continental crust (i.e. the Ivrea Zone) is made of a metasedimentary sequence intruded by sills of mafic and ultramafic rocks. The metasediments studied here are located in the westernmost part of the Ivrea Zone, close to the Insubric line. They are metapelites, with minor meta-arenites and meta-greywackes, metamorphosed under granulite facies conditions. In the granulites five types of mineral assemblages can be distinguished. Whole-rock chemistry indicate that associations with very abundant grt+sil are strongly SiO2-depleted and enriched in relatively refractory elements (Mg, Fe, Al, Ti) and garnet-compatible elements (Y, Nb). These rocks are believed to be the residue left after the extraction of large amount of granitoid melts. Recent experimental results are used to constrain our residual mineral assemblages
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
Insegnare le lingue ad allievi con plusdotazione: una nuova frontiera tra ricerca e didassi
No full textCrossed Beams Measurements of the Differential Collision Cross Section of Heavy Rare Gases: Ar and Kr.
No full textCompetenze digitali trasversali e traduzione cooperativa. Esperienze didattiche innovative fra università e scuola
No full textNell’ambito degli studi sulla didattica della traduzione, alcuni contributi recenti si sono soffermati a lungo sulle interconnessioni fra teoria della traduzione, approcci e metodi didattici, e teoria della complessità. In particolare, sulla scia degli studi di Kiraly (2006, 2015), Calzada Perez sottolinea la necessità approccio basato su una epistemologia positivista che ispirandosi ad un costruttivismo di stampo Vygotskiano che rimandi alla triade “autonomy, experience and expertise” (Kiraly 2000; Perez 2019) con una apertura nei confronti dell’’emergentismo’ - il riconoscimento cioè di aspetti di ‘complessità’ nell’ambito dell’apprendimento, che sfuggono a qualsiasi concezione lineare e trasmissionista della conoscenza (Calzada Perez 2019).
Questa visione della didattica e dell’apprendimento nel campo della traduzione ha portato sempre più a ipotizzare la necessità di adottare attività complesse, basate su progetti autentici.
È sulla base di questi presupposti che il presente contributo si propone di illustrare alcune esperienze di didattica innovativa basate sull’interazione con i progetti Wikimedia sia all’interno dei corsi universitari, sia in collaborazione con scuole: per quanto riguarda l’università verranno prese ad esempio le Translatathon, le maratone di traduzione svoltesi presso l’Università degli Studi di Bari Aldo Moro, e per la scuola un progetto di PCTO svolto presso l’ITIS Pitagora di Taranto
Composizione dei Granati in esperimenti di anatessi di rocce crostali.
No full textAn experimental study on melting of pelitic rocks shows that garnet is an important residual phase coexisting with peraluminous granitic liquid. At 0.5 GPa garnet is present, but it is less abundant than cordierite. At 0.7 and 0.9 GPa garnet is the prevailing ferromagnesian phase and coexists with biotite and/or spinel, depending on temperature. Garnet compositions vary markedly with temperature and to a smaller extent with pressure. The almandine content decreases with increasing temperature, while pyrope content decreases. The grossular content changes little with temperature and pressure. The spessartine content is pressure-dependent, increasing with pressure decrease. As a consequence, spessartine rich-garnet is stable at 0.5 GPa, within the cordierite stability field. In coexisting garnets and cordierites, XMg of the two phases [XMg = Mg/(Mg+ Fe2+) molar) increases with increasing temperature and pressure, being XMgCordierite > XMgGarnet. Moreover, XMgGarnet is constantly higher than XMgLiquid, with the increasing temperature. This is in contrast with the observation of Ellis D.J. (1986), who finds XMgGarnet < XMgLiquid
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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