1,720,966 research outputs found
Visible materials, invisible meanings: colour-based hierarchies in the Middle Ages
No full textThe decision that oversaw the choices of pigments used in medieval artworks was based on multiple criteria. Among these was their economic value, often linked to the greater rarity of the raw material from which the pigments were derived, or to the lower availability on the market. Alongside the economic value, there was also the symbolic value attributed to materials and pigments from a symbolism often rooted in references found in the Holy Scriptures, in exegetical, theological, encyclopedic, or other texts. The case studies presented in this paper, based on works created with different media whose pigments underwent specific archaeometric analyses, show that throughout the Middle Ages, sometimes precise hierarchies were employed in the choice of pigments, and the most precious ones were reserved for the most important figures or the most significant details
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
Chemical-physical decay of volcanic stone from Santa Maria Church in Tergu (Anglona, Italy)
No full textThe Church of Santa Maria di Tergu is located by the Island’s Northern coast, the Gulf of Asinara, a short drive from Castelsardo, in the historical region of Anglona. At the Age of the Giudici the Church was the place of a Montecassino priory, mentioned in 1122 under the title of “Sancta Maria de Therco”. Situated over an area where recent archaeological excavations have revealed traces of a thriving late Byzantine domus, the Church features a single nave and a transept, a gabled front and a characteristic deep red bulk counterbalanced by the white arches and the white panels with black inlays in the façade wall surface. In post-Medieval times it was built a cover with a barrel vault (probably in the second half of the nineteenth century, as in many other similar cases dating the same moment) which caused severe static problems to the monument, since nobody had apparently considered the static requirements of the building and the load on the side walls, not large enough to support such a heavy load. The stone vault was later eliminated in favour of a new cover in wooden trusses.
The Church was build using in duotone two main different stones: reddish volcanic stones and whitish limestones. The macroscopic and petrographic analysis showed that the volcanic rock are Oligo-Miocenic pyroclastites (i.e., rhyolites and rhyodacites). The volcanic stone show a petrographic affinity with samples coming from a local historic quarry, already mentioned in the restoration work documents of the 1940s.
The limestone materials taken from the monument show a variable chemical-physical decay, due to dissolution and decohesion processes of the carbonate matrix.
Also pyroclastic rocks show decay problems, consisting of chemical-mineralogical transformations on the outer stone surface, with devitrification of glassy groundmass and formation of secondary phases
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
- …
