1,721,045 research outputs found
Letter by Santoro et al Regarding Articles, "Duct Stenting Versus Modified Blalock-Taussig Shunt in Neonates With Duct-Dependent Pulmonary Blood Flow: Associations With Clinical Outcomes in a Multicenter National Study" and "Comparison Between Patent Ductus Arteriosus Stent and Modified Blalock-Taussig Shunt as Palliation for Infants With Ductal-Dependent Pulmonary Blood Flow: Insights From the Congenital Catheterization Research Collaborative"
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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
Transcatheter Closure of Symptomatic Arterial Duct in Infants Younger Than 1 Year Old.
No full textTranscatheter closure is currently considered the first-choice therapeutic option in patent arterial duct (AD), although this approach remains challenging in younger patients. To evaluate feasibility, safety, and mid-term efficacy of percutaneous AD closure using different devices in symptomatic infants <12 months old. Among the 483 patients who underwent transcatheter AD closure at our institution from April 2000 to January 2012, 69 were <12 months old. All patients showed cardiac overload at echocardiography, and 72 % of them were on anticongestive therapy. Based on ductal morphology and local anatomy, AD closure was attempted using detachable coils in 24 cases (group A) or the Amplatzer Duct Occluder (AGA Medical, Golden Valley, MN) device in 45 cases (group B). Procedural feasibility was 95.7 % without any difference between groups (95.8 % vs. 95.6 %, p = NS) as were fluoroscopy and procedural times. AD size was 2.5 ± 0.9 mm, and QP/QS ratio was 2.2 ± 1.1, with both being significantly higher in group B [2.1 ± 0.9 vs. 2.6 ± 0.9 mm (p = 0.04) and 1.7 ± 0.8 vs. 2.5 ± 1.2 (p = 0.009), respectively]. Overall complication rate was 1.5 %, without any difference between groups, as was the occlusion rate at hospital discharge (86 %) and over midterm follow-up (55 ± 36 months) (98.5 %). Percutaneous closure of symptomatic AD might be considered effective and safe in very young infants by tailoring the device choice to ductal morphology and local anatomy. In this setting, the controlled-release coil option was shown to be as effective as the ADO device during midterm follow-up
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
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