1,720,999 research outputs found
Transient Astronomical Events as Inspiration Sources of Medieval and Renaissance Art
No full textIt is known long since that a number of exceptional and highly impressive astronomical events have been represented in Medieval artworks. We just remember the Bayeux Tapestry and Giotto’s The Adoration of Magi in the Cappella degli Scrovegni in Padua, representing the P/Halley comet transits of 1067 and 1301, respectively, while The Apparition of Star to Magi fresco in the San Pietro in Valle Abbey in Ferentillo (1182) has been suggested to represent the 1181 Supernova. However, no systematic survey of figurative Medieval and Renaissance art has been performed to date, in order to analyzing the role of transient astronomical events as inspiration sources of artworks in these epochs. In this work, we analyze a significant number of artworks, dated between the 9th and 16th century and representing figurative elements in some way connected with astronomy, in order to evaluate if they have been influenced by coeval extraordinary astronomical events
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
Thiazolyl and isothiazolyl azomethine derivatives with anti-inflammatory and antioxidant activities
No full textSeveral thiazolyl/benzothiazolyl/benzo[d] isothiazolyl Schiff bases and hydrazones have been tested as anti-inflammatory agents and five new compounds have been synthesized. The anti-inflammatory activity was examined in vivo using the carrageenin induced mice paw edema test (inhibition 16.3-64 %). The compounds were tested for antioxidant activity as hydroxyl scavengers and for their ability to interact with the stable free radical 1,1-diphenyl-2-picryl- hydrazyl (DPPH). Both anti-inflammatory and antioxidant activities depended on some structural characteristics of the synthesized compounds
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
Scomporre la complessità: una lettura visiva del soffitto vasariano a Sant'Anna dei Lombardi
No full textLa ricerca indaga il complesso e intricato programma decorativo realizzato da Giorgio Vasari sul soffitto voltato del refettorio del monastero di Maria di Monteoliveto a Napoli, oggi inglobato nella Chiesa di Sant'Anna dei Lombardi. La pluralità degli elementi che compongono l'apparato decorativo, induce alla costruzione di tre livelli di lettura separati, ciascuno di essi analizzato nelle sue proprietà geometriche, iconografiche e simboliche. La progettazione di schemi grafici delle volte a crociera funge, inoltre, da supporto nella comprensione della decorazione e delle sue fasi di lettura
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