1,720,957 research outputs found
Diversified production of red figured pottery in Apulia (Southern Italy) in the late period
No full textLate Apulian red figured pottery [1] from Egnatia (Fasano, Brindisi, ITALY) was studied in
order to widen the view on this ceramic class in Southern Italy. Inductively Coupled Plasma Mass
Spectroscopy (ICP-MS) provided the samples elemental composition that allowed to make provenance
hypotheses. Optical Microscopy (OM) and Scanning Electron Microscopy (SEM) with Energy Dispersive
Spectrometry (EDS), supplied information about the minero-petrographic features of the objectsto
better understand their production technology. The set of results highlighted the contemporary
presence in the Apulian land in the late 4th century b.C. of both local and imported finds and showed
the existence of two different kinds of local production, the "classic" Attic and a peculiar one,
characterized by the application of an engobe layer before the black gloss. Our previous studies
resulted in the discovery that an engobe layer, with similar chemical and minero-petrographic
characteristics, was found in finds from another site in central Apulia (Monte Sannace). So the
discovery of red engobe on fragments from Egnatia, proves that its use was not an isolated occurrence,
but was quite common in the production of red figured in Apulia during the Late period, appearing as a
peculiar technological mark of Apulian potters
Late red figured pottery from Egnatia (Southern Italy): attic tradition and apulian technological innovation
No full text
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
Technological features of ‘gnathia’ pottery
No full text‘Gnathia’ pottery samples, dating back to themid-fourth and third century BC, from the archaeological site of Egnazia (Fasano - Brindisi – Italy) have been characterised from the physical-chemical, mineralogical and morphological points of view. Optical and scanning electron microscopy, X-ray energy-dispersive spectroscopy and X-ray diffraction analyses have been carried out on the ceramic body, black gloss, white, yellow and red over-paintings of fragments, with the aim of outlining technological features and defining the nature of coatings and decorations. Analytical results confirm from both a technological and morphological/decorative point of view the close relationship between ‘Gnathia’ pottery and red figured pottery, particularly with the Apulian red figured from which it takes its inspiration. At the same time the experimental results highlight shared characteristics and differences with both Attic and Apulian red figured productions. The biggest difference is in the utilisation of the ‘ingobbio rosso’ layer that covers the ceramic body. This does not seem to be based on aesthetic grounds, as in the case of Apulian red figured pottery, but on application of acquired production processes, since ‘Gnathia’ pottery was made in the same workshops as red figured pottery
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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