1,721,272 research outputs found
Sulle antiche teorie indiane della musica. Un problema a confronto con altre culture
No full textNei rituali dei {\it Veda} e nelle meditazioni delle {\it Upanisad}, la musica rivestiva un ruolo essenziale, soprattutto nel {\it Samaveda}. La musica quindi veniva coltivata con interesse ed attenzione nella
cultura indiana antica.
Tra i {\it Vedanga}, le {\it Sulbsutra} davano le regole per costruire gli altari. Da esse, emergevano
ragionamenti sulle figure e calcoli coi numeri attraverso i quali possiamo osservare nascere
le scienze matematiche indiane pi\`u antiche. Niente tra le {\it Sulbasutra}, n\'e tra i {\it Vedanga},
trattava invece la musica, per rendere altrettanto preciso lo svolgimento del rituale. Perch\'e il canto fosse corretto e valido, al rito religioso non rimaneva che ricorrere alla trasmissione orale diretta
dal maestro all'allievo. In questo caso, ci si fidava quindi pi\`u delle orecchie che delle parole e dei numeri scritti.
Sono molto scarsi od inesistenti i casi nei quali numeri potessero guidare intonazioni od accordature.
Poich\'e, scritti sia come lettere che come quei simboli particolari i quali diventeranno i nostri
indo-arabi, i numeri trovavano invece altrimenti largo uso, la loro assenza nella musica rende la
cultura indiana diversa e caratteristica. A confronto, in quella cinese ed araba, come nella greca, troviamo trattazioni matematiche della musica.
Il problema merita attenzione perch\'e getta una diversa luce sulle varie e controversie questioni di relazione
(ed eventuale trasmissione) tra l'indiana e le altre culture. In particolare, tenendo nel debito conto la
suddetta caratteristica della musica indiana, si viene ad indebolire molto qualsiasi ipotesi di influenza
col pitagorismo greco (in ambedue le direzioni). Infatti \`e ben nota la teoria pitagorica della musica basata sui numeri interi.
Esisterebbero altre caratteristiche religiose, filosofiche e culturali capaci di suggerirci qualche ragione
sull'assenza di una teoria matematica indiana per la musica? Altrimenti, come alternativa, resterebbe
solo ipotizzare che i testi relativi non siano sopravvissuti alle drammatiche vicende storiche delle
invasioni e del colonialismo, oppure che essi aspettino di venir dissepolti dagli archivi indiani
dimenticati ed in attesa degli studiosi interessati
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
Nascere, rinascere, ricominciare. Atti del convegno internazionale di studi L'Aquila, 18 e 18 giugno 2015.
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
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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