1,721,259 research outputs found
Scientific Production in Dentistry: The National Panorama through a Bibliometric Study of Italian Academies
Full text linkBackground. The academic scientific research in the field of dentistry has rapidly increased in the last 20 years under the pressure of the multidisciplinary technological advancements and the growing demand for new predictable and cost-effective techniques and materials. The aim of the present investigation was to analyze the academic scientific production conducted by Italian Academies and Dental Schools. Methods. The list of MED/28 academic researchers, associate and full professors, and academic affiliations was collected from the national database of CINECA to evaluate the scientific output of the Italian Universities. The complete list of scientific contributions and the bibliometric parameters were recorded in the Scopus database. Results. The scientific production of 37 Italian Universities, 416 researchers, and 23689 papers was evaluated. The measurement of total academic papers, citations, h-index, and relative citation ratio (RCR) was calculated. The study data showed an increase of the academic scientific production over the last 5 years. Conclusions. The results presented show how scientific research is increasingly pursued by dental clinicians
Recurrent ossifying fibroma of the maxillary sinus in an adult patient.
No full textIn some aspects, the terminology of fibro-osseous lesions of the head remain equivocal. The WHO classification suggested to group cemento-ossifying fibroma and ossifying fibroma under the term "ossifying fibroma". Based on the different age of onset, localization and risk of recurrence, two types have been described: "juvenile ossifying fibroma", with early age of onset, which needs to be treated with wide surgical resection due to the high risk of recurrence; and "adult ossifying fibroma", arising in adult patients, with low recurrence rate, properly treated by conservative surgery. We describe a case of an "adult ossifying fibroma" of a 57-yearold woman with several relapses, for whom conservative therapy was inadequate. We think that the "early" age of onset should not be included among the essential characteristics of ossifying fibroma with a high risk of recurrenc
The impact of COVID-19 on the scientific production spread: A five-month bibliometric report of the worldwide research community
Full text linkIntroduction: The recent COVID-19 pandemic has gained recently a deep increasing of research interest in all fields of the human knowledge due to prevention of the Sars-Cov-2 infection and disease treatment The present investigation evaluated the topic publications and the citation network analysis during the early phases of COVID-19 pandemic spread.
Methods: the Boolean search was performed according to the Pubmed Mesh terms by by Scopus Elsevier database. The papers, co-authors, number of citations obtained and scientific journals were recorded.
Results: a total of 164 scientific journals were assessed in the present research with a mean impact factor value of 4.612±8.705 (range: 70.67-0; median: 2,687, Q1: 0,701; Q3: 4,928).
Conclusions: The studies selected showed The bibliometric research showed an early representation of the research orientation of the research activity about COVID 19. The most represented scientific fields concerned with healthcare and medicine, while for the social and economic fields are gaining interests due to the pandemic spread
Bone Response to Two Dental Implants with Different Sandblasted/Acid-Etched Implant Surfaces: A Histological and Histomorphometrical Study in Rabbits
Full text linkBackground. Scientific evidence in the field of implant dentistry of the past 20 years established that titanium rough surfaces have shown improved osseointegration rates. In a majority of dental implants, the surface microroughness was obtained by grit blasting and/or acid etching. The aim of the study was to evaluatein vivotwo different highly hydrophilic surfaces at different experimental times.Methods. Calcium-modified (CA) and SLActive surfaces were evaluated and a total of 18 implants for each type of surface were positioned into the rabbit articular femoral knee-joint in a split model experiment, and they were evaluated histologically and histomorphometrically at 15, 30, and 60 days of healing.Results. Bone-implant contact (BIC) at the two-implant surfaces was significantly different in favor of the CA surface at 15 days(p=0.027), while SLActive displayed not significantly higher values at 30(p=0.51)and 60 days(p=0.061).Conclusion. Both implant surfaces show an intimate interaction with newly formed bone.</jats:p
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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