1,720,969 research outputs found
Nascita di un nome. Esercizi di memoria sul patrimonio immateriale della dieta mediterranea
Full text linkL’autrice riscostruisce la genealogia del termine “dieta mediterranea” e la sua introduzione nel lessico scientifico e nel senso comune occidentali. Questa espressione, infatti, risale solo alla seconda metà del Novecento. Attraverso una serie di testimonianze dirette e un’analisi delle fonti, Moro mette in evidenza il fatto che ad inventare questa fortunata espressione sono stati Ancel Keys e Margaret Haney Keys, scopritori di questo stile di vita, che attraverso il Seven Countries Study (1958) ne hanno dimostrato per primi i benefici sulla salute. Con il libro How to Eat Well and Stay Well. The Mediterranean Way (USA 1975) i Keys introducono nel lessico occidentale il nome dieta mediterranea. Tale termine entra invece ufficialmente nel lessico scientifico grazie ad una ricerca sul rapporto tra dieta e colesterolo, fortemente voluta da Ancel Keys, condotta da Anna Ferro-Luzzi et all. in Cilento-Italia (oggi comunità UNESCO della dieta mediterranea) e pubblicata nel 1984 sul prestigioso American Journal of Clinical Nutrition AJCN.The author reconstructs the genealogy of the term “Mediterranean diet” and its introduction into the scientific lexicon and in the western general sense. Indeed, this expression dates back only to the second half of the twentieth century. After collecting witnesses and analyzing the sources, Moro points out that Ancel Keys and Margaret Haney Keys, the discoverers of this way of life, invented this successful expression. They showed the health benefits of the Mediterranean Diet through the Seven Countries Study (1958). Thanks to the book How to Eat Well and Stay Well. The Mediterranean Way (USA 1975) the Keys introduced the expression “Mediterranean diet” into the western lexicon. However, this term officially enters into the scientific lexicon thanks to research carried out on the relationship between diet and cholesterol. The study was strongly desired by Ancel Keys and performed by Anna Ferro-Luzzi et all. in Cilento-Italy (today one of the UNESCO communities of the Mediterranean diet). This research was published in 1984 in the prestigious American Journal of Clinical Nutrition AJCN
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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