1,721,013 research outputs found
Flint raw material transfers in the prehistoric Lower Danube Basin: An integrated analytical approach
No full textThe paper presents results of a research programme focused on the provenancing of flint raw materials used in the prehistory of the Lower Danube Basin of the Balkans. Field survey encompassed two adjacent regions connected by the Danube River. First, northern Bulgaria where rich flint-bearing Cretaceous deposits are known along with numerous Neolithic sites but with limited pre-Neolithic presence apart from several well-known Middle to Upper Palaeolithic sequences. Second, the Danube Gorges area on the southern, Serbian side of the river, characterized by relatively scarce deposits of flint, but with one of the best preserved concentrations of Mesolithic, transitional and Early Neolithic sites in the wider region of southeastern Europe. Focusing on both of the two selected regions allows one to follow diachronic dynamics in supply and circulation of local and non-local flint raw materials along the examined stretch of the Lower Danube Basin. In order to connect surveyed flint outcrops and different types of raw material used in archaeological contexts, an integrated approach was employed using both petrographic thin sections and LA-ICP-MS trace element chemical finger-printing analyses
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
Underwater archaeological excavations in the bay in front of the mouth of the Ropotamo river
No full textThe main task in the 2020 was to complete the excavation of the EBA layer in grid-square T4 (fig. 1). The EBA layer was investigated at a depth from –4.2/4.5 m to –5.2/5.5 m from the sea surface and consists of marine sediments with EBA archaeological materials. Under the EBA strata, there is a flat layer of homogeneous gray clay, about 0.8 – 0.10 m thick. This sterile sediment is deposited on top of hard sandy brown-yellow soil, which has the character of ancient dry land (figs. 2-3). The section of the EBA settlement excavated in grid-square T4 was built on dry land, at the level of the gray mud, –5.2/5.6 m below the present-day sea surface. The buildings in T4 are pile dwellings with habitation platforms. Stratigraphic observations show that the settlement was flooded by the sea during its existence, and the space between the piles was relatively quickly blocked by sea sediment. During the subsequent destruction of the platforms, they collapsed and formed a level with abundant EBA archaeological materials at a depth from –4.4/4.7 m to –4.8/5.1 m. In 2020, for the first time in the Black Sea, at a depth between –5.3/5.6 m and –5.8/6.1 m, materials from the Late Neolithic were discovered. They are dated to Aşağı Pınar 3, Karanovo III/IV or the beginning of Karanovo IV (fig. 4). Probably the Neolithic finds originate from a settlement that was entirely on dry land and should be sought to the north (towards the coast) from grid-squares T1, T2 – T3 and T4
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
Етнографски и археологически дикани: трансрегионална перспектива: Ethnographic and archaeological tribula: transregional perspective
No full textThe paper presents an important evidence of ethnographic tribula from the south-eastern Balkans, which inserts are commented as a referential corpus to a series of archaeological tribulum inserts identified by the author and coming from a Late Chalcolithic site in Bulgarian Thrace. Archaeological tribulum inserts from Bulgaria can be recognized because of their striking similarity to ethnographic examples in morphology and shape, and especially in microscopic wear features.
The paper also presents the results of a micro-wear analysis, made by the author, of a series of Canaanean blades assemblages from different areas in Israel (from the Negev to the North Mediterranean zone and Galilee). The study aimed to verify the concept of Canaanean blades used as tribulum and not as sickle inserts. Ultimately, the results have been tested in resolving one of the crucial problems in the theoretical background of use-wear studies: that of the establishment of reliable patterns for distinguishing the micro-wear characteristics (polishes and accompanied striations) of sickle and tribulum inserts
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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