1,720,956 research outputs found
The Augustan Bridge at Narni: Documentation and Analysis by Laser Survey and 3D Modeling
No full textThe Augustan Bridge at Narni, so-called following its renovation under Augustus in 27 BCE, is an important point on the Via Flaminia (220 BCE) connecting Rome to Rimini, and embodies all the characteristics of an imposing military structure. Though having collapsed several times it retains its arches on the south side, as well as part of the central and northern pillars. Mentioned in classical sources, and described by many artists and travelers, the bridge became the subject of numerous studies from the second half of the Seventeenth century. Following an earthquake in 2000, the surviving arch was the subject of restoration work completed in 2005. However, many technical aspects of the structure are still not fully understood: the number of arches - three or four, though most scholars argue four -, the absence of a breakwater, the shape of the collapsed arches, its slope and physical connection with the Via Flaminia at both mountain and valley level, as well as the causes of its collapse. Laser scanning techniques created a 3D digital clone of the bridge, providing comprehensive measurements for reconstructing the bridge’s original form and overall size. Today, such precise quantitative data programs along with their resulting point cloud of 3D measurements, combined with CAD technology and the possibility of three-dimensional printing, significantly improve the virtual reconstruction of surfaces and their textures. These techniques can be utilised by both the scientific and academic communities
Fouilles de la section Moyen Âge
No full textLatini Francesca, Moscioni Dina, Scaia Flora. Fouilles de la section Moyen Âge. In: Mélanges de l'École française de Rome. Moyen-Age, tome 109, n°2. 1997. pp. 645-664
Fouilles de la section Moyen Âge
No full textLatini Francesca, Moscioni Dina, Scaia Flora. Fouilles de la section Moyen Âge. In: Mélanges de l'École française de Rome. Moyen-Age, tome 109, n°2. 1997. pp. 645-664
The Augustan Bridge at Narni: From laser survey to FEM seismic analysis
No full textThe Augustan Bridge of Narni represents one of the greatest transit infrastructure realized by the Romans. Mentioned in classical sources, partly collapsed on several occasions, the bridge has kept his strategic military role until the definitive collapse in 1053, being the obligatory transit from Rome to the North. Although subject to many studies however many technical aspects of the structure are still not fully understood: from which quarry the travertine blocks came from, the original number of arches, the absence of breakwater, the shape of the collapsed arches, its slope and physical connection to the Via Flaminia at both mountain and valley level, as well as the causes of its collapse. Recently an entire laser survey was carried out, today updated, providing comprehensive measurements for reconstructing the bridge’s original shape and overall size. Finally from FEM models was carried out a series of structural analysis
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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