1,721,042 research outputs found
Point pattern analysis e selezione multi-modello per l’indagine dei sistemi insediativi nei territori di alta quota: l’occupazione mesolitica delle Dolomiti [Point pattern analysis and multi-model selection as a tool for investigating settlement patterns in highland territories: the Mesolithic occupation of the Dolomites]
No full textPoint pattern analysis and multi-model selection as a tool for investigating settlement patterns in highland territories: the Mesolithic occupation of the Dolomites
How many techniques to retouch a backed point? Assessing the reliability of backing technique recognition on the base of experimental tests
No full textBacking techniques represent one of the most relevant technical aspects involved in the manufacturing processes of backed tools. In this paper, we present results of an experimental programme focused on the manufacture of backed points, a kind of tool that has played a key role in Upper Palaeolithic technical systems. In order to identify which retouch techniques are effective to produce backed points, different combinations of retouchers (lithic vs. organic) and force application modes (percussion vs. pressure vs. abrasion) were tested. Through a morphoscopic analysis, it was possible to identify and describe numerous mesoscopic and macroscopic criteria useful for the identification of retouch techniques. The results of this experimental activity were then validated through a series of blind tests. Furthermore, these criteria were applied to an archaeological assemblage of backed points from the Late Epigravettian series of Riparo Tagliente (Verona, North-Eastern Italy). It was thus possible to determine the use of two retouch techniques: soft stone percussion on anvil and pressure by a soft stone retoucher. If percussion on anvil had already been attested in several Late Glacial sites, pressure by soft stone is here identified for the first time in an archaeological context
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
Dall’immagine di pietà alle anime come intercessori Sviluppo, resistenze e affermazione del Purgatorio nella vita religiosa italiana della prima età moderna
No full textStudio sull'affermazione del culto per le anime purganti in Italia in Eià moderna
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
Site functional variability and settlement systems in the Sauveterrian (Southern France and Northern Italy)
No full textLa tecnologia del Mesolitico antico è in genere percepita come il risultato di un basso investimento
tecnico nella produzione e uso degli strumenti litici. In questo articolo viene proposto che
tale percezione sia da imputarsi primariamente ad un problema di visibilità archeologica. Tramite
l’applicazione di un approccio tecno-funzionale combinato allo studio di due insiemi litici del Mesolitico
antico (Sauveterriano) provenienti dalla Francia meridionale e dall’Italia nord-orientale, è stato
possibile comprendere in maniera più approfondita i sistemi tecnici degli ultimi gruppi di cacciatori-
raccoglitori preistorici. Contestualizzando e confrontando questi siti con il record archeologico
regionale è stato possibile percepire la grande variabilità funzionale dei siti noti e la complessità del
sistema insediativo Sauveterriano. In questo scenario, è possibile affermare che l’insieme di siti noti
riferibile a questa fase cronologica, seppur particolamente abbondante rispetto a periodi preistorici
più antichi e a territori limitrofi, sia comunque influenzato dallo sviluppo delle attività di ricerca. Gli
scavi svolti in passato, infatti, hanno permesso di indagare un gran numero di siti specializzati nelle
attività di caccia. Questi sono sicuramente molto importanti per la ricostruzione dei modi di vita
dei gruppi mesolitici ma allo stesso tempo costituiscono solo una parte del più articolato sistema
insediativo logistico sauveterriano.Early Mesolithic technology is generally perceived as the result of a small technical investment in
lithic tool manufacture and use. In this paper, it is argued that such perception is primarily the result
of low archaeological visibility. By using a combined techno-functional approach to study two Early
Mesolithic (Sauveterrian) flaked assemblages from Southern France and North-eastern Italy, it was
possible to gain a deeper insight into the technological systems of the last European prehistoric
hunter-gatherer groups. By contextualising and comparing these two sites with available regional
evidence, it was possible to get a glimpse of the high functional variability of the known sites and
the complexity of the Sauveterrian settlement system. In this scenario, it seems that the current
Early Mesolithic evidence of the region, although relatively abundant with respect to earlier prehistoric
periods and neighbouring territories, is still partially biased by research activities. Past excavations,
in fact, mostly allowed exploring hunting-specialised sites that are undoubtedly significant
for the reconstruction of Mesolithic lifeways but, at the same time, only represent a part of the
complex Sauveterrian logistical settlement system
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