1,721,083 research outputs found
L’ossidiana delle tombe 3 e 32 di Ispiluncas – Sedilo (Or). Un approccio tecnologico
No full textIl ritrovamento di strumenti litici in contesti funerari costituisce un dato ricorrente legato alle varie composizioni dei corredi, che contenevano oggetti di uso comune, ma anche di particolare prestigio e valenza simbolica. Tuttavia la presenza di altri elementi legati sequenza operativa apre nuove problematiche, riconducibili alla lavorazione parziale dell’ossidiana nella stessa tomba e quindi a gesti più complessi della semplice deposizione di offerte e della composizione dei corredi funebri. Partendo dai dati di scavo e dall’analisi tecnologica dei reperti in ossidiana provenienti dalle domus de janas 3 e 32 di Ispiluncas, prevalentemente riconducibili ad un orizzonte finale del Neolitico, si proporrà una discussione sulle dinamiche dei rituali funerari.The presence of stone tools in graves is recurrent with other common use object or very prestigious and symbolic things that made up an outfit. But new problems are stressed by the presence of some step of the reduction sequence for the obsidian flintknapping. This, found next to the ipogeum, is connected with a more complex deeds than of simple giving offering and outfit composition. A discussion of funeral rituals dynamics is proposed with the combined excavation dates and technological analysis of lithic assemblage of late Neolithic domus de janas 3 and 32 of Ispilunca
L’uso dell’ossidiana nell’insediamento preistorico di Craviole Paderi – Sestu (CA)
No full textIn Castelli P., Cauli B., Di Gregorio F., Lugliè C., Tanda G., Usai C. (eds.) L’ossidiana del Monte Arci nel Mediterraneo: recupero dei valori di un territori
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
L’uso dell’ossidiana nell’insediamento preistorico di Craviole Paderi – Sestu
No full textUna vasta area insediativa ricca di materiali litici, fittili e ossei, fu scoperta negli anni '90 circa 1.5 Km a nord-ovest di Sestu (CA). Lo studio delle ceramiche ha permesso di individuare una frequentazione nella fase Ozieri del tardo Neolitico, nel Sub-Ozieri del primo Eneolitico e nell'ambito della cultura di Monte Claro dell'Eneolitico evoluto.
Scopo del presente lavoro è approfondire l'analisi dell'uso dell'ossidiana (circa 1500 elementi) mediante il metodo dell’analisi tecnologica, con la ricostruzione della "sequenza operativa", dall'approvvigionamento, alla lavorazione, all'abbandono della materia prima.
Si è potuto ipotizzare che l'ossidiana giungesse sotto forma di piccoli blocchi -probabilmente risultato di una raccolta di superficie- che venivano poi lavorati direttamente nel sito. Sono infatti presenti in gran quantità schegge di messa in forma e di vero e proprio decorticamento del nucleo, schegge di ravvivamento, molto materiale di pieno débitage e residui di nucleo. Questi ultimi sono stati intensamente sfruttati e ridotti a dimensioni esigue, a testimonianza forse di difficoltà nell’approvvigionamento della materia. Di grande interesse è lo studio dei pezzi scagliati, finora mal documentati in Sardegna, e presenti in altissima percentuale.Potsherds, lithic material and bones, were collected from a field at some 1.5 km north-west of Sestu (CA). Pottery refers to the Ozieri culture (Late Neolithic), to the Sub-Ozieri culture (Early Chacolithic), and to the Monte Claro culture (Late Chalcolithic).
Obsidian remains (c. 1500 flakes, blades and chips) were analyzed in order to reconstruct the chaine opératoire, from raw material procurement, to tool production and discard.
Obsidian was apparently introduced as little pebbles – probably collected from the surface of alluvial expanses – then reduced on site. There are many cortical flakes, resharpening flakes, unretouched fragments and exhausted cores, suggesting difficulty in raw material procurement. Scaled pieces were also retrieved in great numbers, and analyzed into some detail, as they are not well documented at other Sardinian sites
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
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