1,720,977 research outputs found
Applicazione del protocollo NM-PCI allo studio delle produzioni litiche e circolazione delle materie prime alle pendici degli Zagros tra VI-III millennio a.C.
No full textNew research in the North-western Kurdistan Region of Iraq allowed investigating, for first time in the area, the process of supply, production and distribution of Canaanean blades during the 5th to 3rd millennia BC. The area was, by far, essentially unknown since the resumption of the archaeological research in 2012. The present project contributed new and significative data to understand the increasing social complexity and landscape exploitation during the later stages of the Prehistory.
By combining the lithic technological approach and a multi-parametric protocol of chert characterization – the NM-PCI – the present work investigated the evidence of local production and distribution of large blades departing from the knapping workshops of the Jebel Zawa chert source, that were active from the 4th to the 3rd millennia BC. The discovery of this previously unknown raw material source allowed to trace the circulation of the products following a regional perspective, by analysing the huge dataset of blades, resulting from the LoNAP survey.
A specific sampling was performed to build a geological reference collection. The chert samples were studied following a three-step procedure: macroscopic (cortex, structure, colour) and microscopic descriptions (translucence, texture, micropalaeontology), and geochemical analyses (pXRF, Raman micro-spectroscopy). The application of the NM-PCI protocol outlined the compositional variability of the Zawa chert and highlighted the provenance markers which were adopted into the study of the artefacts provenance.
The study focused also on the lithic assemblages from Tell Helawa (Erbil Plain), far distant about 150 km from the previous area, which was occupied from 6th to 4th millennia BC. Here, the almost exclusive exploitation of local raw materials (alluvial pebbles and cobbles) became to be integrated by the supply of Canaanean blades, around the half of the 4th millennium BC.
The results from the application of the NM-PCI protocol on the archaeological artefacts and data comparison with the geological reference collection highlighted the existence of several regional networks, as well as long-distance circulation of Canaanean blades at Helawa, indicating complex systems of production and distribution, as well as relationships between the settlements established along the Zagros piedmont. This new picture, despite being partial, represents a pilot study and the starting point for future research on the subject,
implementing the geological reference collection as a powerful tool to investigate these cultural dynamics
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
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
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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