1,720,966 research outputs found
DECAY PROCESSES AND THREE-DIMENSIONAL DIGITAL MODELLING FOR GEOMETRIC-SPATIAL RECONSTRUCTION OF THE VOLCANIC STONE CALLED “THE ELEPHANT” OF NEOLITHIC “DOMUS DE JANAS” (SARDINIA, ITALY): INVESTIGATION
No full textThis research is based on the preliminary physical and petrographic characterization applied with the support of advanced 3D modeling developed from laser scanner survey data. The subject of the investigation is a volcanic rock engraved with a group of ancient tombs carved within a great zoomorphic stone which shape recall the one of an elephant. The research about this "domus de janas" (the named used to indicate certain ancient sepulchral monuments quite common in the Anglona area, North-west of Sardinia) started gathering the 3D digital models with a high level of details and developing this virtual model with its great accuracy within its geographical -virtual- environment. The further steps were aimed at providing a first set of information about its petrophysical characteristics, decay state (from petrographic composition to their alteration processes and their causes), and the evidences of the missing parts fallen during the ancient collapse which gave the stone its special shape. All the informations were composed according to a detailed 3D representation, based on the original laser scanner survey. The main task is to show how to put together the 3D survey of this monument with all the data about its degradation. The further development of the gathered data will be aimed to the definition of a searchable model with all these informations linked in it. At the same time a set of specific digital models will be developed, to cover different tasks, from the virtual exploration to the 3D printing (from the scaled representation to the creation of "spare parts"). This research will be aimed to produce 2 main benefits: a complete reconstruction of the original structure of the Neolithic tombs, including the collapsed parts; a correct definition of the decay state and of the potential threats on the future of this natural/human monument conservation
Petro-physical characterization and 3D digital modeling for geometric reconstruction of the Neolithic “domus de janas” of Sedini field (North-Sardinia, Italy)
No full textThe subject of the investigation is a volcanic rock in which a
group of Neolithic tombs named "domus de janas" have been
excavated. this operation is quite common in Sardinia, even if in
this specific case it assumes some even more interesting
characteristics. The research started gathering the 3D digital
models with a high level of details and developing this virtual
model with its great accuracy within its geographical -virtualenvironment.
The further steps were aimed at providing the
information about its petrophysical characteristics, alteration
processes and the evidences of the missing parts fallen during an
ancient collapse. The main task is showing how to put together
the 3D survey of this monument with all the data about its decay.
The further development of this research will be aimed to: the
definition of a searchable model with all these information linked
in it, to produce a complete reconstruction of the original
structure of the tombs, the definition of the potential threats on
the future for this monument conservation
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
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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