1,720,964 research outputs found
MATERIALS AND ARTISTIC TECHNIQUES OF THE FLEMISH WOODEN ALTAR FROM DEPOSITS OF ABATELLIS PALACE MUSEUM (PALERMO, ITALY)
No full textIn the frame of the restoration intervention on a 16th century wooden altar performed by the experts
of the Gallery of Art for the Sicilian Region ‘Palazzo Abatellis’, a deep scientific investigation of the
artwork has been made by a scientific team in order to individuate the constitutive materials and
techniques. The outcomes from the multi-analytical analyses supported the scheduling and monitoring
of the conservation treatments and revealed the pictorial materials and underdrawing techniques
typical of the artistic production for this typology of work of art widespread between the 15th and 16th
centuries in central and northern Europe
Microclimatic Monitoring for Archeological Shelters Across Indoor Comfort and Conservation: The Case Study of the Villa del Casale in Piazza Armerina (Sicily, Italy)
No full textConservation and use raise priority and complementary needs in the archeological built heritage and, within the contemporary paradigm, they are no longer conflictual activities. The minimum intervention principle and compatibility are key objectives to avoid altering the values of the heritage. However, the musealization process also requires a double focus: on the one hand, the conservation of the material asset; on the other, the well-being of the users. The influence of environmental parameters on material decay is a well-known item: this occurs through chemical, physical, and biological processes, which contribute to reducing the expected life of archeologi- cal finds. Furthermore, the conditions of thermo-hygrometric comfort are necessary to guarantee the correct use of the site. The paper focuses on the thermo-hygrometric well-being in archeological sites and, in particular, on the case of Villa Romana del Casale, in Piazza Armerina, Sicily, which is a UNESCO site. A complex restoration project was performed on this site a few decades ago, aimed at improving the conservation of the mosaic apparatuses and users’ well-being, through the redesign and consequent replacement of the shelter system. The microclimate monitoring, aimed to verify the environmental conditions created by the new covering system, has been focused on sample room, on which the new covering system has been completed, and rooms that still are covered by the methacrylate old system. The comparison between the environmental parameters related to the old covering system, which caused undesired effects both for use and conservation, and the data related to the new covering system, allowed verifying the improvement in microclimatic conditions after the intervention. Data have demonstrated that the new one has reduced temperature inside the rooms and has increased humidity values. These analytical data demonstrate that the conservative intervention provided a positive impact on microclimatic conditions. Indeed, the comparison also showed the absence of the dangerous greenhouse effect. The conclusion of the paper will propose a comparative analysis of these results and other general aspects of the quality of the intervention, which cannot be measured or can only be measured indirectly
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
A polychrome Mukozuke (1624–1644) porcelain offers a new hypothesis on the introduction of European enameling technology in Japan
No full textThis study was carried out in an attempt to resolve the issue of the introduction of overglaze enameling in Japan through non-destructive analysis of the overglaze enamels that decorate the only known polychrome mukozuke dish (to be used in the tea ceremony) bearing the early Japanese date mark ‘Kan'ei Nen Sei’ (made in the Kan'ei period) (1624–1644). The investigation focused specifically on the overglaze yellow enamel and the underglaze blue pigment, for they could provide valuable information on the production workshop and geographical area of origin. Owing to the extraordinary importance and extreme rarity of this newly-discovered dish, it was mandatory not to sample it. Therefore, Energy-Dispersive X-Ray Fluorescence (ED-XRF) and Raman spectroscopy were used to obtain, in a non-destructive way, both elemental and molecular information about the coloring agent present in the yellow overglaze enamel. The underglaze-blue pigment at the base mark was also investigated. Besides a detailed literature research, a comparison was made with the chemical composition of fully identified and dated polychrome decorated Chinese and Japanese porcelains, and the results are reported in this work. The obtained analytical evidence has proved to be crucial in identifying the first use of Naples Yellow in Japan, and in resolving the issue of the origin of overglaze enameling, providing the missing step that actually led to the first development of the technique in Arita in the 1630s. Furthermore, it has shown that the Raman shift of the Pb mode of the A2O’ lattice is greatly affected by the firing temperature for enamel decoration, and that this specific characteristic of Naples Yellow, along with its elemental composition, can help determine its area of origin and period of manufacture
Protecting archaeological collections in Capua Archaeological Museum (Italy): The importance of microclimatic monitoring and non-invasive diagnostic investigations
No full textDispelling 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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