1,721,006 research outputs found
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
Clinical Outcomes of Three Different Crown Systems using CAD/CAM Technology
Full text linkCAD/CAM technology has opened many doors for dental restoration fabrication. Improvements in intraoral scanning technology and the use of newer esthetic materials have brought many questions to the forefront. Concerns over restoration fit and quality have been expressed, as well as accuracy of digital methods involved for crown fabrication. This clinical study examined three different crown materials for posterior teeth in need of full coverage restoration. Crown preparations were scanned intraorally using the E4D or iTero scanner and crowns digitally designed and fabricated. Teeth received porcelain fused to metal, lithium disilicate or monolithic zirconia restorations. Gingival parameters and modified USPHS criteria were recorded for each crown and marginal integrity was examined using micro-CT analysis. An 18.8% rejection rate was noted for crowns due to poor marginal adaptation. Overall, acceptable results were obtained for all three systems.Master of Scienc
Evaluating the efficacy of grafting the facial gap at immediately placed implants in the anterior maxilla: a systematic review and randomized controlled trial
Full text linkImmediate implant placement is an accepted and widely utilized treatment modality for tooth replacement following extraction. Survival and success are comparable to implant placement in healed ridges. However, the best methods for achieving predictable soft tissue esthetics are still up for debate. Contemporary surgical strategy often leaves a facial gap anterior to the implant, between it and the buccal plate. The ideal management of this gap--with regards to grafting or not--has not been clearly defined. There are two general aims to this thesis: to review immediate implant literature that examines esthetic outcomes based on facial gap grafting status, and to carry out a randomized, controlled trial evaluating whether grafting the facial gap between the implant and buccal bone at the time of immediate implant placement will improve tissue preservation when compared to a no-grafting protocol.Master of Scienc
Complications and Patient Centered Outcomes with a Monolithic Zirconia Implant Supported Fixed Prosthesis
Full text linkObjectives: To quantify the number and type of complications that occur with a monolithic zirconia implant supported fixed prosthesis (MZISFP) and to examine change in oral health quality of life over the course of six months. Methods: Fifteen edentulous patients were enrolled. Each patient was provided conventional dentures, four mandibular implants, and a mandibular MZISFP. Complication data were recorded over 6 months. The 49-item Oral Health Impact Profile was administered on three occasions: at enrollment, at implant surgery, and at 6-month recall. Results: Seven complications occurred during the MZISFP observation period. Implant survival was 93% and 98% from the patient and implant perspectives respectively. Prosthesis survival was 93%. OHIP-49 severity and extent scores decreased significantly over the course of the study (p<0.001). Conclusions: Complications were infrequent and patient centered outcomes were significantly improved with a MZISFP
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