1,720,964 research outputs found
Spontaneous Pseudoaneurysm of the Superficial Femoral Artery in Behcet's Disease—Endovascular Stent-Graft Treatment Combined with Percutaneous Drainage: A Case Report
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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
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
Permanent hemodialysis catheters: How long lasting are they?
No full textAmaç: Bu çalışmada kalıcı hemodiyaliz kateterlerinin takılmasında en uygun ve güvenilir yöntemler, bu yöntemlerin komplikasyonları ve kateterlerin açıklık oranları değerlendirildi. Çal ışm a planı: Ocak 2008 - Haziran 2012 tarihleri arasında kliniğimizde kalıcı hemodiyaliz kateteri takılan ve halen hastanemiz hemodiyaliz ünitesinde hemodiyaliz programında olan 127 hasta (72 erkek, 55 kadın; ort. yaş 65.0±14.7 yıl; dağılım 17-85 yıl) retrospektif olarak değerlendirildi. Hastaların yaşı ve cinsiyeti, kateterlerin takılma endikasyonları, takılma yerleri, çıkarılma nedenleri, kullanım süreleri ve katetere bağlı komplikasyonlar kaydedildi. Kateter ömrü, kateterin takıldığı tarihten katetere bağlı gelişen komplikasyonlardan dolayı çıkarıldığı tarihe kadar geçen süre olarak tanımlandı. Bulgular: Yüz yirmi yedi hastaya toplam 155 adet kalıcı hemodiyaliz kateteri yerleştirildi. Kateterlerin 79u sağ juguler ven, 22si sol juguler ven, 13ü sağ subklaviyan ven, sekizi sol subklaviyan ven, beşi sağ femoral venden yerleştirildi. Kateterler yedi hastada enfeksiyon, 13 hastada kateter içi tromboz, beş hastada kateter malpozisyonu, üç hastada ise diğer nedenlerle yeni bir kalıcı kateter ile değiştirildi. Sonuç: Kalıcı hemodiyaliz kateterlerinin kullanım süresi uygun kateter seçimi, uygun kateter giriş yeri, klinisyenin deneyimi ve işlemin ultrasonografi veya floroskopi kılavuzluğunda yapılması ile doğrudan iliş- kilidir.Background: In this article, we evaluated the most appropriate and safest methods to insert permanent hemodialysis catheters, the complications of these methods and catheter patency rates. Methods: Between January 2008 and June 2012, 127 patients (72 males, 55 females; mean age 65.0±14.7 years; range, 17 to 85 years) in whom a permanent hemodialysis catheter was inserted in our clinic and who continued to undergo hemodialysis program in the hemodialysis unit of our hospital were retrospectively analyzed. Age and sex of the patients, indication for catheter insertion, the localization, reasons for catheter removal, duration of use and catheter-related complications were recorded. Life of the catheter was defined as the period of time from the date in which the catheter was inserted to the date in which the catheter was removed due to catheter-related complications. Results: A total of 155 permanent hemodialysis catheters were inserted to 127 patients. Seventy-nine were inserted via the right jugular vein, 22 via the left jugular vein, 13 via the right subclavian vein, eight via the left subclavian vein, five via right femoral vein. A new permanent catheter was inserted due to infection in seven patients, due to catheter thrombosis in 13 patients, catheter malposition in five patients, and other complications in three patients. Conclusion: The duration of use of a permanent hemodialysis catheter is directly related to an appropriate catheter choice, appropriate localization for insertion, experience of the clinician and with the guidance of ultrasonography or fluoroscopy
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