1,720,966 research outputs found
Centi et al. 2022. To err is human: Knapping expertise and technological variability at the Middle Palaeolithic site of Nesher Ramla, Israel. Journal of Archaeological Method and Theory. Replication data for the 3D-based EPA measurement
No full text3D models of an assemblage of Middle Palaeolithic flint cores with traces (hammermarks) of failed attempts at removing blanks and/or rejuvenating the striking platform. The artifacts are from Nesher Ramla open-air site, in central Israel. The raw material is good-quality, fine.grained Mishash flint. Original files are in .wrl format
Small mammals from Mondeval de Sora (San Vito di Cadore, Belluno): paleoenvironmental differences between early and late Holocene
No full textI resti fossili di micromammiferi provenienti da Mondeval de Sora (VF1, settore I e III) sono stati studiati allo scopo di ottenere una ricostruzione dell’ambiente nelle immediate vicinanze del sito durante l’Olocene. Lo studio tassonomico ha portato all’identificazione di 14 specie, mentre stru- menti statistici come l’indice di Simpson e il metodo dell’Habitat Weighting sono stati impiegati per esaminare l’insieme faunistico dal punto di vista biologico ed ecologico. Il settore I ha restituito un basso numero di resti (N.I. totale 24), mentre il settore III si è dimostrato più ricco (N.I. totale 148) permettendo di osservare attraverso la sequenza i cambiamenti ambientali avvenuti tra l’inizio e la fine dell’Olocene. In particolare, le variazioni nell’associazione di micromammiferi indicano il pas- saggio da un ambiente prativo con buona copertura del terreno durante l’inizio dell’Olocene (ma- cro-unità mesolitica) ad uno con scarsa copertura e rocce esposte durante la fine dell’Olocene (macro-unità protostorica e storica). Inoltre, la presenza di Sciurus vulgaris testimonia la vicinanza al sito di aree boschive, suggerendo un limite degli alberi probabilmente ad altitudine più elevata rispetto all’attuale
The Mesolithic lithic assemblage of VF1, sector III, of Mondeval de Sora (BL, Italy). Economy, technology and typology
No full textVF1 site (2150 m a.s.l.) is located at the centre of the wide Mondeval basin, protected by a boulder. The extraordinary conservation of the deposit has allowed to recover not only a rich lithic assemblage, but also organic remains, and to identify dwelling structures. From sector I, on the south-western side of the boulder, comes a thick layer rich in organic and lithic material laying on a pavement structure which has been dated to the Sauveterrian period and a Castelnovian burial. Sector III, located on the North face of the boulder, is characterized by a well preserved stratigraphic sequence, attesting Mesolithic, Bronze Age and Middle Age frequentation. Radiocarbon dates are available for SU 10 (8.445 ± 50 BP; 7.587 – 7.370 cal. BC) and SU 32 (9.160 ± 90 BP; 8.613 – 8.243 cal. BC), supporting the archaeological attribution of these layers to the Sauveterrian.
The work consists in the identification of the lithic raw material outcrops exploited, the reconstruction of the reduction sequences
and the typological analysis of the retouched elements and focuses on the Mesolithic layers (SU 10-20-30, SU 21 and SU 32). Besides an analysis on the whole Mesolithic assemblage, a comparison among the layers was done, aimed at the identification of chronological trends in the Sauveterrian frequentation
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
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