1,720,958 research outputs found

    Database Archive Roman Bricks off the Wall

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    This is the dataset linked to the article submitted to the American Journal of Archaeology (AJA), currently under review

    Data from “Ceramic Technology and Cultural Change in Sicily from the 6th to the 11th Century AD.” PhD Thesis

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    This dataset presents the results of the petrographic and SEM-EDS analysis of 516 ceramic artefacts sampled from four early medieval sites across Sicily. The full database archive as well as the raw data are stored in the University of Sheffield repository. Petrographic descriptions can be found in Testolini’s thesis from page 94 to 142. These data shed new light into the ceramic provenance and technological choices in Sicily in a time of shifting power between Byzantine and Islamic rulers. The Dataset can be reused to identify other ceramic production centres and technological traditions in Sicily across time and space, as well as to challenge cultural labelling of ceramic artefacts

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

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    “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

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    We 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

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    We 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

    Author Index

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    Ceramic Technology and Cultural Change in Sicily from the 6th to the 11th century AD.

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    This thesis addresses issues of the technology and provenance of pottery from medieval Sicily (6th-11th century A.D.). The reconstruction of pottery production and consumption is undertaken in order to illuminate the social and economic effects of the influx of population and the introduction of new technologies in Sicily, in the time of transition between Byzantine and Islamic rulers. The research applies a technological interpretative framework to the study of ceramic upon material culture evidence, based up similar successful analytical approaches elsewhere in the Mediterranean. The chaîne opératoire approach was employed to reconstruct changes and continuity in Sicilian ceramic craft, while consumption patterns were studied through the characterisation of the pottery sets in Sicilian Byzantine contexts and successive phases, to identify innovation perhaps linked to the arrival of new settlers. Petrographic analysis of entire assemblages was carried out to identify those products manufactured in Sicily as well as imported vessels. Macroscopic observation, thin section petrography, optical microscopy and SEM-EDS analysis were combined to reconstruct Sicilian production sequences. The thesis presents the characterisation of raw material choice and processing, forming methods, finishing techniques, and firing procedures of cooking pots, table wares, storage and transport containers, manufactured in Sicily from the 6th-7th to the 11th century. Taking an assemblage-based approach, rather than only considering glazed wares, strong evidence is presented for both continuity and some distinct changes in technology from the Byzantine period to Islamic period in Sicily. Comparisons of the results with other cognate studies from contemporary contexts within the Byzantine Empire and the Islamic Caliphate makes it possible to suggest the movement of new settlers to Sicily from North Africa (perhaps both Christians and Muslims); and also, revealed some changes but also continuity in the consumption habits in Sicily at the dawn of the early medieval Mediterranean

    Cencelle ceramic petrography database- zip

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    This folder contains the database archive linked to the article Archaeological Science and Experimental Archaeology Can Inform Sustainable Innovative Craft https://www.mdpi.com/2513624.This dataset displays a selection of ceramic samples from the medieval settlement of Cencelle, in association to their macroscopic fabric, the petrographic group and photomicrographs.</p
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