1,721,609 research outputs found
Education during the COVID-19 pandemic: the perception of Italian dental and medical students
No full textBACKGROUND: During COVID-19 pandemic many dental and medical students continued their education from home. From several studies it emerges that students prefer face-to-face teaching, due to the better interaction with teachers, the least number of distractions and due to the negative effect of social isolation on the psychological aspect. The aim of this study was to evaluate the perception of Italian dentistry and medicine students about teaching and training in this scenario.METHODS: Two online questionnaires were sent to medical and dental students of all Italian universities to investigate the limits and advantages of distance learning and the experience regarding the internship. A chi-square test was used to assess the association between gender, year of the course and region of residence (P<0.05). RESULTS: One thousand one hundred thirty-eight students answered the first survey, and 292 the second one. Most students preferred face-to-face teaching due to the difficult to maintain attention during online lessons. Many students reported that the online internship was not adequate for their education.CONCLUSIONS: Distance learning disadvantages are the greater number of sources of distraction, low level of interac-tion, and absence of the relationship with the patient during the practical training. Furthermore, isolation has strongly affected psychosocial balance of the students. The advantages are the greater comfort, the reduction of transport costs, the decrease in pollution, and the possibility of reviewing the lessons. Most Italian students considered appropriate to provide distance learning during the pandemic but believed that the best teaching method was teaching in presence. (Cite this article as: Spirito F, Amato A, Scelza G, Pisano M, Caponio VCA, Martina S. Education during the COVID-19 pandemic: the perception of Italian dental and medical students. Minerva Dent Oral Sc 2022;71:277-86. DOI: 10.23736/ S2724-6329.22.04712-X
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
FUNCTIONAL-AESTHETIC GUIDED IMPLANT PLACEMENT WITH DOUBLE TEMPLATE IN ASSOCIATION WITH ONE-STAGE COMPUTER-GUIDED BONE REGENERATION PROCEDURE FOR AESTHETIC PURPOSES: 18-MONTH OUTCOMES IN A PROSPECTIVE CASE SERIES
No full textPURPOSE. To evaluate the outcomes of a new computer-guided surgical approach for prosthetically-and aesthetically-driven implant insertion in horizontally atrophic ridges using a double template concept and one-stage guided bone regeneration (GBR) procedure at 1 year and half after loading. MATERIALS AND METHODS. This study was designed as a prospective case series. Patients in need of rehabilitation with an implant-supported restoration between the up-per premolars, Cawood-Howell Class III defects and residual horizontal bone width of less than 6 mm and more than 4 mm were treated with computer-guided implant placement using two templates and simultaneous GBR, and, in cases of bone fenestration with autologous bone, anorganic bovine bone arranged in layers, or in cases of thin buccal bone, using a mix of 20% autologous bone and 80% anorganic bovine bone pro-tected with a resorbable collagen membrane. After 6 months of healing, implants were fitted with temporary screw-retained acrylic resin crowns, and 6 months later perma-nent screw-retained zirconia-ceramic crowns were delivered. Outcome measures were: implant and prosthesis failures, complications, marginal bone level (MBL) changes, periodontal parameters, and pink aesthetic score (PES). RESULTS. Twenty-one consecutive patients (mean age 39.2 years) received one compu-ter-guided GBR procedure each, with contemporary placement of 25 conical-connection implants. No patient dropped-out, no implants or prostheses failed, and only two minor complications were observed. Mean marginal bone loss from implant placement up to 18 months after loading was 0.71±0.23 mm (95% CI 0.59 to 0.83 mm), mean BoP was 2.37±5.95 (95% CI-0.17 to 4.92)percent of sites, mean PPD was 2.54±0.49 mm (95% CI 2.35 to 2.73 mm), and mean PES was 11.2±1.2 (95% CI 10.3 to 12.1). CONCLUSIONS. Acknowledging the limitations of this study, the high survival rate and PES seem to validate the use of a double-template approach in association with one-stage GBR and implant placement in atrophic aesthetic areas. Randomised controlled trials are needed to properly evaluate the utility of this technique versus simple free-hand implant placement with no augmentation procedures
COMPUTER-GUIDED VERTICAL AND HORIZONTAL BONE REGENERATION WITH RESORBABLE CUSTOMIZED BONE LAMINAS FILLED WITH 100% PARTICULATE AUTOLOGOUS BONE: A CASE REPORT
No full textPURPOSE. To describe a case of novel computer-guided bone regeneration (CGBR) tech-nique used for vertical and horizontal reconstruction of atrophic edentulous maxilla with customized rigid bone laminas filled with 100% particulate bone. MATERIALS AND METHODS. A healthy female requested an implant-supported fixed prosthesis for rehabilitation of a completely edentulous maxilla. The patient reported pain and discomfort with her complete removable denture, due to severe bone atrophy, and presented a horizontal and vertical bone defect. After virtual prosthetic planning, a 3D bone augmentation procedure was planned. Bone reconstruction was performed using two separate customized bone laminas filled with 100% autologous bone. Nine months after healing, six implants were installed, and three months later a full gingival graft was performed on the maxilla. A titanium resin screw-retained prosthesis was then fitted, and bone volume and linear dimensional changes were measured. RESULTS. Seven months after augmentation, part of the left lamina had become exposed, albeit with no graft infection. However, one year after loading no implant had failed and the prosthesis was deemed successful. The mean volumetric bone augmentation was 1.583 cm3. Mean horizontal bone augmentation was 6.3 mm, while mean vertical bone augmentation was 5.5 mm. CONCLUSIONS. The stable results one year after loading should prompt randomized controlled trials to verify the potential clinical advantages of the approach described
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
The emerging field of human endogenous retroviruses: Understanding their physiological role and contribution to diseases
Full text link- …
