1,720,967 research outputs found
Capitolo VI - Raffronto storico-artistico e diagnostico-analitico con una testimonianza pittorica affine
No full textRaffronto storico-artistico e diagnostico-analitico tra il "Ritratto di Gentildonna" e il "Ritratto di giovane donna con una catena con scorpioni", conservato presso il Columbia Museum of Art (South Carolina)
V Capitolo - Saggi Tecnici
No full textAl fine di avvalorare e supportare con argomentazioni oggettive le teorie esposte nei precedenti capitoli, sono presentate le indagini diagnostico-analitiche svolte sul dipinto e supportate dall'occhio esperto del restauratore. Le analisi, invasive e non ed inerenti tanto al supporto quanto alla pellicola pittorica, permettono di comprendere ancora più a fondo la messa in opera di questo piccolo ritratto di Gentildonna. L'obiettivo sarà quello di evidenziare come tale opera possa essere annoverata, a buon diritto, tra le emblematiche esercitazioni della bottega di Leonardo
Learning from the past, intervening in the present: the role of conservation science in the challenging restoration of the wall painting Marriage at Cana by Luca Longhi (Ravenna, Italy)
Full text linkThe paper discusses the case study of the Marriage at Cana, a sixteenth century wall painting located in Ravenna and
executed by Luca Longhi. A multi-analytical approach based upon OM, SEM–EDS, μ-Raman, μ-FTIR and biological
analyses was selected to investigate the painting technique and the state of preservation of the artwork, compromised by a severe alteration. Data demonstrated that the artwork was executed with a dry painting technique: a
siccative oil was used as binder, while indigo, lead white, carbon black, ochres, vermilion and red lead were identifed as pigments. Biological analyses clearly allowed identifying Eurotium halophilicum as the fungus responsible for
the white patina compromising the painted surface and, according to this result, Biotin T was selected as the most
efective biocide to stop the biological attack. The precarious conditions in which the painting was, attributable to
previously performed interventions and to the conservation environment, laid the groundwork for a challenging
restoration conducted in 2016. Scientifc analyses better clarifed the kind of materials employed in the execution on
the artwork, as well as how the previous restoration was carried out; furthermore, analytical data methodologically
supported phases of the intervention like cleaning, flling of the lacunae and pictorial retouching, as products were
selected on the basis of their afnity to original materials and painting technique. This study will hopefully encourage
refections on how a synergic dialogue between conservation science and restoration can represent an important
reference point for interventions to be conducted with scientifc criteria and suitable methodology, in the light of the
shared vision and common goal of transferring patrimony to future generation
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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