1,720,960 research outputs found
Virtual simulation of a late antique shipwreck at Marzamemi, Sicily: Integrated processes for 3D documentation, analysis and representation of underwater archaeological data
No full textThree‐dimensional (3D) models derived from digital survey techniques have increasingly become a
mainstay of archaeological research and cultural heritage management. The high accuracy of such
modelling makes it an attractive solution for a wide range of challenges from site recording
and interpretation to object analysis and reconstruction. The present paper focuses on a new 3D
digitization method using stereoscopic video for the documentation, analysis, and representation
of archaeological contexts as part of shipwreck investigations off southeast Sicily at Marzamemi.
This sixth‐century CE vessel sank in shallow water (7–8m) while carrying a massive cargo of largely
prefabricated architectural elements intended for the construction and decoration of a church
somewhere in the late antique west. This dynamic site presents significant challenges to the
interpretation of depositional and post‐depositional events as well the reconstruction of the
original cargo and individual architectural elements. Therefore, 3D documentation underwater at
Marzamemi has centred on new methods for stereoscopic scanning of the site, topography, and
large architectural finds, allowing not only more rapid and precise mapping but insights into site
formation processes and the organizational mechanisms behind the cargo assemblage. The
adoption of this new system based on a precise workflow and simple, inexpensive hardware
combined with readily available software allows more accurate and rapid digital recording underwater
to a high standard across scales, from the site level down to the individual artefact. This process,
named ISU3D (Integrated System for Underwater 3D Digitization), offers innovative solutions not
only for archaeological field research but for heritage management and public outreach
Vivara. From prehistory to digital information
No full textDuring the Mycenaean era, the prehistoric settlement of Vivara was a place of intense exchanges between civilizations and people traveling throughout the Mediterranean along routes that, from the Near East and Greece, skimmed the shores of North Africa and then proceeded up to land on the coasts of southern Italy. To the island of Procida, pottery and objects arrived that, like live furrows of ancient sea lanes, the archaeological excavations are returning from the earth, and in this earth, which was mud that swept over everything, signs of disastrous events are detected, signs that have severed the succession of historical events. The subjects of our research are the new methods and tools for the detection of contexts (3D laser scanner devices for the scanning of submerged heritage, image-based systems, structured light scanners) and new forms of management and representation of data for the understanding of new forms of cultural fruition. What is being proposed here is an active approach to data production, aimed both at the recording of the moments and the space of an excavation and both at the verification of forms of their use within a scalar logic that include the study of phenomena, interpolation of data for complex analysis, teaching carried out in context with a simultaneous research activity, and forms of multi-level representation of digital information. Hence the results of our research: the activation of highly specializing training; the opening at Terra Murata of the TERRA exhibition, where every year the results of the experiments are illustrated
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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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