1,720,978 research outputs found
I PREMI NOBEL 2004 PER LA FISICA E LA TEORIA DELLA LIBERTÀASINTOTICA DELLE INTERAZIONI FORTI
No full textLa comunicazione affronta il dilemma dell’attribuzione della spiegazione del fenomeno della “libertà
asintotica” nella teoria delle interazioni forti, oggetto del Premio Nobel per la Fisica 2004. Una storia
piena di controversie, errori e contraddizioni, le cui implicazioni sono ancora tutte da esplorare ed in cui
è rilevante il contributo dei fisici teorici italiani
Abdus Salam : the dream of symmetry
No full textParticle Physics in the XX century and the scientific path of Abdus Salam. In Jhang, a small town in the Punjab, one night a man dreamt that his child was climbing high up on a tree, so high that soon he seemed to disappear into the blue sky. The name of the child was Abdus Salam, that means ’Servant of Peace’, who was going to win in 1979 the Nobel Prize in Physics for his groundbreaking advances in our understanding of the laws of Nature. But not only was he a great scientist, he was also a visionary and humanitarian. With a burning concern, fired by is unhappiness at having to leave his own country for pursuing higher research, Abdus Salam always tried to find ways to make science the common and shared heritage of all mankind.
From a remote village in Pakistan to the prestigious colleges of Cambridge, from the exciting atmosphere of London to the charming seaside of Trieste, where Abdus Salam founded the International Centre for Theoretical Physics. This is the engaging story of his life and, at the same time, the fascinating account of one of the most creative and exciting periods of discovery in the history of physics: the dream of a unified theory of elementary particles and fundamental forces in Nature
La forza delle immagini (e di qualche parola): la divulgazione scientifica al cinema, alla radio e in televisione
No full textLa comunicazione visuale (tv e cinema) della scienza in italia, dalle orini al 196
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
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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