1,720,956 research outputs found
Archeometric and archeological characteristics of glazed pottery in the islamic era at palermo (End of the 9th century-mid-11th century). new data and open issues
No full textIn this article we will examine a series of problems that emerged during two systematic campaigns of archeometric analysis using optical and electronic microscopes to study the clays and, in particular, the glazes pertaining to 41 pottery samples datable to between the end of the 9th to the end of the 11th century which came from the stratigraphic sequences discovered in some excavations conducted in Palermo from the 1980s until 2000 (Castello-San Pietro; Gancia; Palazzo Bonagia). Despite the many archeometric studies focused on the petrographic definition of Palermitan pottery, no project has yet been directed to the systematic identification of the types of glazes used for this production, although in reality the specific study of these latter opens a whole new series of research possibilities that have important effects on the economic, social and methodological aspects. The technological definition of Palermitan pottery products is part of a wider context of the problems related to glazed ceramics in the Mediterranean area, consequently it is important to deal with them on an innovative basis which compares them with imports from North Africa and other contexts in the eastern areas. The technological characterization also requires a revision of the criteria used for classification which combines a chronological-typological approach with the archeometric data
Islamic Ceramics and rural economy in the Trapani mountains during the 11th century
No full textLocated in the Trapani Mountains of North-West Sicily, the hilltop site of Pizzo Monaco has formed the focus of systematic excavation and an innovative, integrated study of the total ceramic assemblage, as part of the MEMOLA FP7 project. The date, provenance and production technology of the varied types of pottery are investigated by macroscopic, morphological and decorative analysis, in combination with petrography and scanning electron microscopy in order to assess social, technological and economic ties of this rural site and its environs with the early Islamic capital of Sicily at Palermo, the wider island and North Africa. Local production of cooking vessels is compared with glazed and plain storage pottery, serving and consumption vessels from Palermo, in a region where the new relationship between coastal centre and nearby mountain economies was being forged. Correlation of the properties of the pottery assemblage with the unusual architecture suggests the storage of a repeated ceramic set, perhaps on a household basis, in a site which may be a fortified storage facility, rather than sustaining more permanent occupation. The typological study provides new information on the range of ceramics circulating in Sicily during the mid-11th century CE, revealing the full spectrum of ceramics consumed at this time. This approach contrasts with work that privileges a view of simple transmission of glazing technologies across the Islamic Mediterranean. Indeed a comparison of production sequences in the crafting of similar glazed bowls at Palermo demonstrates the co-existence of different communities of practice and cautions against over-simplified reconstructions of the transmission of glazing technologies in the early medieval Mediterranean. The range of pottery available from a variety of sources highlights the consumption choices made by these communities in the medieval period
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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