1,721,083 research outputs found
New data on source characterization and exploitation of obsidian from the Chikiani area (Georgia)
No full textThe characterization of the obsidian specimens collected during the 2012 and 2014 surveys evidence the existence of at least 3 main obsidian chemical groups at Chikiani. The possible presence of different eruptive phases was already pointed out (Nomade et al. 2015). An age ranging from 2.4 Ma to 2.8 Ma being associated with the studied samples presenting respectively the lowest and highest barium content (638 ppm and 682 / 727 ppm). These datings are however still discussed (Lebedev and Vashakidze 2015).
The perfect match observed between the chemical composition patterns of the high barium artefact groups and those of groups 2, 3a and 3b, confirms the attribution of these artefacts to the Chikiani obsidian outcrops.
According to the available data, Mt. Chikiani obsidian sources were exploited throughout a long period, ranging from the Early Neolithic to the Middle Bronze Age. The supply zone covers a wide territory. Nevertheless, at present little is
still known of the modes of exploitation of the different Chikiani flows, and even less of the precise location of the exploitation zones during the different periods.
The new characterizations presented here, according to which three Chikiani obsidian groups have been identified and precisely geo referenced for the first time (fig. 9), help interpret the complexity of the role played by Caucasian
obsidian exploitation and its modes of circulation inside and outside this Caucasus
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
Claudia Antonetti - Biagi, Paolo (eds.), With Alexander in India and Central Asia: moving East and back to West. Oxford, Oxbow Books. 2017
Full text linkObra ressenyada: Claudia ANTONETTI; Paolo BIAGI (eds.), With Alexander in India and Central Asia: moving East and back to West. Oxford: Oxbow Books. 2017
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
Indian Ethnography in Alexandrian Sources: A Missed Opportunity?
No full textThe earliest Greek sources on Alexander off er a rich harvest of ethnographic
data concerning ancient India, including customs and traditions of Taxila, marriages,
castes etc. However, although belonging to the Indian traditions, the names, fi gures,
social and religious practices they mention often provide us an apparently confusing
and incomplete picture. A deeper analysis shows that Alexander’s India as depicted in
the fragments at our disposal is used to provide an exotic background to the legendary
deeds of the conqueror. In a later period, as well as in the work of many historians who
wrote about the life of Alexander, rather than being moved by a genuine interest to
discover and describe India, these seem to be moved by diff erent purposes, characteristic
of their time. The essay presents some considerations on the work of Arrian and Strabo,
with particular reference to the fragments of Aristobulus and Megasthenes
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
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