1,721,085 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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
Outcomes, rates and predictors of transition of isolated Raynaud's phenomenon: a systematic review and meta-analysis
Get PDFPublished studies lack clear indicators of risk and predictors of transition from Raynaud's phenomenon (Rp) to connective tissue diseases (CTDs). Therefore, we aimed to study the outcomes, rates and predictors of transition to CTDs in patients with Rp
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
Qualitative and quantitative analysis of gingival microvessels by capillaroscopy in healthy subjects
Get PDFGingiva is composed by attached gingiva and free gingiva that are separated by free gingi-val line. Attached gingiva covers the alveolar bone and adheres to the bone and root surface by fibres. Free gingiva ends with the gingival margin and in clinical practice it can be displaced from the tooth surface to locate the prosthetic margin. Capillaroscopy allows to take micropho-tographs of the microvessels and to observe their abnormalities in autoimmune rheumatic dis-eases (1). Aim of this study was to analyse microvessels of the attached gingiva, free gingiva line and free gingiva by means of capillaroscopy. In correspondence of upper incisors of 12 young healthy volunteers, after placement of liquid vaseline, microphotographs (x200) were taken at level of the free gingiva and 2-3 mm more apically within the attached gingiva. Capil-laries structure and organization were evaluated in the three areas of interest. In 10 randomly selected microphotographs of the attached gingiva, the amount and percentage of mi-crovessels per mm2 were also calculated. For each subject, two analyses were performed at 3 weeks of distance for repeatability assessment. At the observation, in attached gingiva ves-sels appeared as tortuous capillary loops perpendicular to the epithelial surface. At level of free gingival line vessels get linear and parallel to the arch of gingival margin. In free gingiva capillaries run superficially and parallel to the epithelial surface, toward the margin and fell back with a loop on the tooth side. At the quantitative analysis, the method resulted repeatable (Wilcoxon signed-rank test, p>0.05). A mean of 49.8 (± 9.5) microvessels for mm2 was found. Capillaries represented the 10.3% (±3.5) of the attached gingiva. Capillaroscopy is a non-invasive repeatable method to observe gingival capillaries. This method may be proposed in clinical practice to detect and monitor changes or abnormalities after placement of prosthetic margins.
[1] Cutoloet al. (2008) Capillaroscopy. Best Pract Res Clin Rheumatol 22:1093-108. doi: 10.1016/j.berh.2008.09.001
Incidence of COVID‐19 in Patients With Rheumatic Diseases Treated With Targeted Immunosuppressive Drugs: What Can We Learn From Observational Data?
No full textTo describe the incidence and severity of coronavirus disease 2019 (COVID-19) in rheumatic patients treated with targeted synthetic or biological anti-rheumatic drugs (ts/bDMARDs) compared with the general population living in the same Italian region
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