1,721,120 research outputs found
Platimiro Fiorenza, Rosso Corallo e Arte Sacra
No full textIl catalogo "Platimiro Fiorenza, Rosso Corallo e Arte Sacra" si offre come strumento scientifico a supporto della omonima mostra tenutasi presso il Museo Diocesano di Monreale dal 6 dicembre 2014 al 18 gennaio 2015. La Mostra,a cura di R. Fiorenza e C. Costanzo, è dedicata ai manufatti in corallo di carattere sacro eseguito dal Maestro Platimiro Fiorenza e a una selezione di opere in corallo appartenenti alla collezione permanente della prestigiosa sede museale monrealese
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
Inverse opal TiO2 as visible-light driven photocatalysts
No full textSemiconductor photocatalysts have attracted a great deal of attention due to their potential application in environmental remediation. Titanium dioxide has been extensively investigated as the most promising photocatalyst. To improve the optical response of TiO2 in the visible region, Inverse Opal TiO2 has been recognized as an efficient photocatalyst due to its unique properties in terms of uniformly ordered and interconnected macroporous architecture
MRI IN DENTISTRY: AN INNOVATIVE AND ETHIC APPROACH
No full textAim: the aim of this poster is to suggest to the oral and maxillofacial
community the use of the magnetic resonance imaging
(MRI) as an alternative diagnostic exam to the conventional xray
imaging.
Methods: systematic reviews and metanalysis with high impact
factor of the last 10 years in the main scientific databases
were investigated and data were retrieved. We only included
studies with statistically significant results.
Results: 17 studies were found. The use Of MRI in dentistry
was successfully applied in conservative and endodontic procedures
(1 study), in oral surgery (1 study), in temporomandibular
disorders (1 study), in oral and maxillofacial pathology
(excluding oncology, 2 studies) and in guided dental implant
planning (1 study).
Compared to the conventional x-ray imaging, the MRI has numerous
advantages; first of all its use isn’t associated with any
ionizing radiation risk. Moreover, MRI is capable to identify areas
of suppuration, oedema, hypovascularized bone and intra
bone inflammatory infiltrate.
Conclusions: the usefulness of MRI in dentistry has been
confirmed; however, researchers pointed out that there are some
disadvantages, such as the longer scanning time, the
costs, the waiting lists and the reduced availability of MRI
scanners
Photocatalytic and Catalytic Oxidation of 2-Propanol over Au/TiO2-CeO2 Catalysts
No full textPhotocatalytic and catalytic oxidation of 2-propanol
(representative VOC’s compound) were compared over mixed
(Au)TiO2-CeO2-based catalysts. The role of support in Au
catalyzed oxidation reaction under photo and dark conditions
was studied. In the photocatalytic oxidation CeO2 had a negative
effect on the performance towards the alcohol conversion of both
TiO2-CeO2 and Au/TiO2-CeO2 catalysts, being Au/TiO2 the most
active system. On the contrary mixed TiO2-CeO2 and Au/TiO2-
CeO2 samples showed a higher catalytic oxidation efficiency for
2-propanol conversion compared to the single oxides
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