1,721,691 research outputs found
A clinical case report on indirect, posterior three-unit resin-bonded FRC FPD.
No full textAbstract: Purpose: This paper describes a clinical, conservative approach and the details of cavity preparation for the replacement of a maxillary first premolar using a minimally invasive preparation combined with the adhesive approach.
Material and Methods: A patient with a missing first premolar was treated with a 3-unit indirect fiber-reinforced composite (FRC) fixed dental prosthesis (FDP). The preparation on the canine was a slot combined with modified wing to increase the amount of fiber in the restoration. Glass fiber (Vectris; Ivoclar Vivadent) was used in an anatomical shape for the framework and incrementally veneered with resin composite (Adoro; Ivoclar Vivadent). The cavities were prepared by etching enamel and dentin with orthophosphoric acid, priming the dentin, and applying a three-step adhesive system and dual-cured luting resin (Variolink II, Ivoclar Vivadent). Finally, the indirect FRC FDP was finished and polished with 15-mu m diamond burs (Composhape, Intensiv) and a polishing kit.
Results: The patient was satisfied with the esthetics and function of the restoration, which has served without repair for 5 years. At the 5-year clinical follow-up, the restoration was found to be clinically successfull. Conclusion: The correct cavity-preparation technique in combination with the FRC system could enhance the long-term survival of an inlay FDP
Die Meisterbilder von Andrea Orcagna (1308 (?) -1368), Lorenzo Monaco (c. 1370-1425) und Masolino (1384 - nach 1435)
No full textDIE MEISTERBILDER VON ANDREA ORCAGNA (1308 (?) -1368), LORENZO MONACO (C. 1370-1425) UND MASOLINO (1384 - NACH 1435)
Die Meisterbilder der Florentinischen Maler (-)
Die Meisterbilder von Andrea Orcagna (1308 (?) -1368), Lorenzo Monaco (c. 1370-1425) und Masolino (1384 - nach 1435) (2) ( - )
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Karstic caves and submerged paleo-shorelines in the coastal area between Capo Santa Panagia and Ognina (Siracusa, south-eastern Sicily)
No full textThe aim of this work is the detailed survey of the submerged area in front of the shoreline between Capo S. Panagia e Ognina (Siracusa), in order to reconstruct the lateral extension and the continuity of the submerged morphological elements and to define their genesis and temporal evolution. This coastal stretch is characterized by the occurrence of several raised paleo-shorelines, related to Late Quaternary high-stands. They are represented by cliffs and abrasion platforms carved on a Miocene-Pleistocene carbonatic succession and are often linked to karstic levels (caves, channels, siphons, etc.). Several speleothems, such as stalagmites, stalactites, columns, cave pearls, have been found in the caves. The submerged area is characterized by the same morphological features. The sea-bottom is, in fact, characterized by at least two palaeo-cliffs of marine origin, the shallower one located at depths between -9÷12 m and -20÷22 m, the deeper one located at depths between -20÷25 m and -40÷45 m. The scarp located between -9÷12 m and - 20÷22 m is well preserved and shows a continuity of about 20 km. The scarp located between -20÷25 m and -40÷45 m is more discontinuous and steeper. Several caves, channels and siphons, characterized by the occurrence of continental fossilized speleothems, have been found along these scarps, probably linked to palaeo-karstic levels. The detailed topographic survey of two caves has been carried out and a stalagmite has been sampled in order to determine its age and to reconstruct the relationships between sea-level rise and vertical tectonic motion of the area. The morphological analysis and the first dating results suggest that the two submerged palaeo-shorelines can be interpreted as the effect of Late Pleistocene sea level stands. At present they are submerged as a consequence of the sudden Holocene sea-level rise
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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