1,721,951 research outputs found
Leonardo E Romero
No full textThe anniversary [the 75th anniversary of the arrival of Southern Pacific rail service to Tucson] had special significance for Tucsonan Leonardo E Romero. As a boy of 12, he watched the first train arrive in 1880, then he worked for the SP from 1899 until his retirement in 1931. When this photo was taken, he was 87. [Chapter 1 Page 17
Leonardo e la matematica.
No full textGli innumerevoli studi dedicati a Leonardo da Vinci hanno consegnato alla società una figura quasi leggendaria di scienziato e di artista. Questa relazione è dedicata alla matematica e ai matematici ai tempi di Leonardo e all'interesse che il genio di Vinci dimostrò per questa disciplina (anche se non sempre con risultati apprezzabili) che , tra il XV e il XVI secolo, stava vivendo un'importante stagione della propria storia
I dipinti di Leonardo e dei leonardeschi
No full textIntroduzione ai dipinti di Leonardo e della sua scuola conservati in Ambrosiana. Seguono schede relative a disegni del maestro e degli allievi, tra i quali si segnala il De Divina Proportione di Luca Paciol
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
Leonardo e la taranta
Full text linkEnThe presence of the "tarantula" (taranta) in Leonardo da Vinci's writings, more precisely in his "bestiary", was noted for the first time by Ernesto De Martino in "La terra del rimorso" (1961). However, the anthropologist had not been able to identify the source of the quotation, which is fully reproduced in this essay. After framing the phenomenon in the culture of the time, with appropriate references to De Ardoynis, Ponzetti and Antonio De Ferrariis Galateo, the author focuses on Leon Battista Alberti, anticipator of Leonardo and possible secondary source his as being informed on the subject. The inclusion of two 20th century classics, Italo Calvino and Thomas Mann, draws its justification on the literary level as a key to the complexity of Leonardo's thought.ItLa presenza della taranta negli scritti di Leonardo da Vinci, più esattamente nel suo "bestiario", fu notata per la prima volta da Ernesto De Martino ne "La terra del rimorso" (1961). L'antropologo però non aveva potuto individuare la fonte della citazione, che in questo saggio viene riproposta integralmente. Dopo aver inquadrato il fenomeno nella cultura del tempo, con opportuni riferimenti a De Ardoynis, Ponzetti e Antonio De Ferrariis Galateo, l'autore si sofferma su Leon Battista Alberti, anticipatore di Leonardo e sua possibile fonte secondaria in quanto informato sull'argomento. L'inclusione di due classici del '900, Italo Calvino e Thomas Mann, trae la sua giustificazione sul piano letterario come chiave d'accesso alla complessità del pensiero di Leonardo
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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