1,720,958 research outputs found
Esthetic-functional rehabilitation: Orthodontics and restorative approach. A clinical case
No full textObjectives Aim of this paper was to bring the attention to the feasibility of using unconventional and customized dental treatment helped by composite materials for direct restorations. In this particular case a multidisciplinary dental approach was taken to restore the upper dental arch of a young female with high esthetical demand, specifically an orthodontic nontraditional procedure was carried out to avoid traditional orthodontic appliance before to restorations. Materials and methods A 25 years old patient came to our attention – at the Section of Dentistry and Maxillofacial Surgery of University of Verona – asking for the alignment of the upper central incisors and closure of the diastemas present between all the anterior teeth of the upper arch. An alginate dental impression of both arches was taken and the intraoral and extraoral photographs required for planning the clinical case were captured. Esthetical parameters and occlusal relationship were registered. All records were evaluated and a treatment plan was developed in agreement with functional and esthetical parameters, thereafter the treatment plan was submitted to patient in order to obtain her approval. With her informed written consent, the treatment began. Misalignment of upper central incisors was solved by using two palatal buttons positioned on elements 1.1 and 2.1 and applying a rotational force by means of metallic ligatures activated weekly for three months. After orthodontics, a diagnostic wax-up was made to better understand proportion and reshaping of restorations. A digital previsualization of final result was therefore performed using Keynote software (iWork, Apple, Cupertino, California, USA) in order to face the esthetical requirements of our young patient. Moreover a silicon index was built, based on diagnostic wax-up, to help the direct restoration phase performed using Ceram.x composite resin (Ceram.x duo, Dentsply Sirona, Konstanz, Germany), as a result all the diastemas were closed and reshaping of elements from first left premolar to first right premolar was performed. Results and conclusions The patient was immediately pleased with the final result both from esthetic and functional point of view. She reported to be satisfied that it was possible to avoid the traditional orthodontic treatment and the removal of natural dental tissue. With this in mind it could be advisable to remind that new composite resins, thanks to their high esthetical performances, allow to respect biological tissues and to perform mimetic changes of smile. With this perspective, a clinician could manage each case with a wider approach including different disciplines in order to guarantee the best results to his patients, also in challenging situations. In this particular case it was possible to restore the upper arch in a young girl avoiding all invasive and nonreversible procedures. Clinical significance This clinical case aimed to bring to the attention the possibility to achieve high-standards oral rehabilitations in patients with high esthetical and functional requirements. This could be possible avoiding invasive procedures, dental tissue removal and prosthetic definitive rehabilitations. Moreover, this case could be of interest because highlights the feasibility to use orthodontics in a nonconventional and individualized way, especially when the patient does not cooperate and does not accept the traditional treatment. Furthermore, the economic cost of a short-term orthodontic procedure and of direct composite resin restorations make more appealing the treatment proposed
VisuaLayered: Combined Visual Analysis of MA-XRF and RIS Data
No full textIn this work, we present VisuaLayered, the implementation of a combined analysis workflow for pigment identification. VisuaLayered is an integrated, interactive system that focuses on the combined visual analysis of Macro X-Ray Fluorescence (MA-XRF) and Reflectance Imaging Spectroscopy (RIS) data.Analysing paintings for pigment identification is relevant for many applications in the cultural heritage domain, such as conservation and restoration.Domain experts use non-invasive scanning techniques as an initial step in their analysis. Two such techniques are MA-XRF and RIS. They provide hyperspectral data on the elemental and molecular composition of pigments, respectively. Domain experts analyse these two complementary data modalities in order to determine the pigments present in the different paint layers of a painting. However, due to the size and high-dimensionality of these datasets, experts have problems with efficiently analysing the data. In general, they examine the two data modalities separately in the analysis workflow and use their knowledge to unify all the information without additional software support, as there is no integrated system that is designed specifically for the combined analysis of MA-XRF and RIS data.We worked in collaboration with domain experts from the Rijksmuseum, Amsterdam in order to design and implement VisuaLayered based on current domain practices. We use t-SNE for projecting the high-dimensional data into a two dimensional space, which the user can interactively explore in combination with other linked views in order to find connections between the two data modalities. With our system, experts can explore the spatial distribution and the correlation between pixels that have similar molecular and/or elemental compositions. Additionally, for the RIS data, we support endmember identification and analysis based on the pigments' spectral profiles. We tested the efficiency of our system with respect to the designed workflow in a case study evaluation with our collaborator. They successfully used VisuaLayered for the analysis of one painting and found the views combining the two data modalities very useful for better understanding the relation between them. Moreover, they were able to identify new pigments, that they missed when using existing software.Computer Science | Software Technolog
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
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
- …
