1,720,967 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
Ανταπόκριση στη θεραπεία καρδιακού επανασυγχρονισμού σε ασθενείς με καρδιακή ανεπάρκεια που πληρούν τα κριτήρια Strauss
No full textΕισαγωγή: Η θεραπεία καρδιακού επανασυγχρονισμού (CRT) αποδείχθηκε πολύ αποτελεσματική στη βελτίωση της νοσηρότητας και της θνησιμότητας σε ασθενείς που πάσχουν από σοβαρή καρδιακή ανεπάρκεια. Η αποτελεσματικότητά της έχει αποδειχθεί ότι είναι μεγαλύτερη σε ασθενείς με αποκλεισμό αριστερού σκέλους (LBBB). Στόχος της μελέτης μας ήταν να διερευνήσουμε εάν τα προτεινόμενα κριτήρια για το LBBB από τον Strauss εντοπίζουν ασθενείς με καλύτερη κλινική και υπερηχογραφική ανταπόκριση στη CRT. Μέθοδος: Αξιολογήσαμε μια ομάδα 48 ασθενών με συμπτωματική καρδιακή ανεπάρκεια (ισχαιμικής ή μη ισχαιμικής αιτιολογίας), παρά τη βέλτιστη φαρμακευτική θεραπεία. Τα κριτήρια ένταξης στη μελέτη ήταν LVEF ≤35% και η παρουσία LBBB με QRS ≥130 msec στο ΗΚΓ πριν από την εμφύτευση. Οι υπό μελέτη ασθενείς υποβλήθηκαν σε εμφύτευση CRT-D στο ηλεκτροφυσιολογικό μας κέντρο από τον Ιανουάριο του 2013 έως τον Δεκέμβριο του 2017.Οι ασθενείς χωρίστηκαν σε 2 ομάδες ανάλογα με το εάν εμφάνιζαν LΒΒΒ κατά Strauss ή όχι. Αποτελέσματα: Από τους 22 ασθενείς με Strauss LBBB, 20 (90,9%) ανταποκρίθηκαν στη θεραπεία με συσκευές CRT ενώ οι υπόλοιποι 2 (9,1%) ασθενείς δεν ανταποκρίθηκαν (p <0,01). Η ομάδα που δεν ανταποκρίθηκε είχε σημαντικά υψηλότερο κίνδυνο νοσηλείας (p <0,01) και κοιλιακών αρρυθμιών (p = 0,03) κατά τη διάρκεια της παρακολούθησης σε σύγκριση με τους ανταποκρινόμενους. Είναι αξιοσημείωτο ότι, ενώ η επίπτωση θνησιμότητας κατά τη διάρκεια της παρακολούθησης ήταν χαμηλή (0,04%), οι 2 ασθενείς που απεβίωσαν δεν είχαν ανταποκριθεί στη θεραπεία με CRT. Στο τέλος της παρακολούθησης, παρατηρήθηκε σημαντική αύξηση στο κλάσμα εξώθησης (αύξηση κατά 18%) και σημαντική μείωση του LVESV (74,1mm) στους ασθενείς με Strauss LBBB (p <0,001), ενώ μια σημαντική, αλλά ηπιότερη, αύξηση στο κλάσμα εξώθησης (κατά 5%) και η μείωση στο LVESV (27,6mm) παρατηρήθηκε στην ομάδα με non Strauss LBBB (p <0,001). Τέλος, στους ασθενείς με διατατική μυοκαρδιοπάθεια και Strauss LBBB παρατηρήθηκε βελτίωση στο κλάσμα εξωθήσεως κατά 22% έναντι βελτίωσης 6% στους ασθενείς με συμβατικό LBBB (p <0,001). Συμπέρασμα: Οι ασθενείς με Strauss LBBB έχουν καλύτερη κλινική και ηχοκαρδιογραφική ανταπόκριση σε σχέση με τους ασθενείς με LBBB με τη CRT και ιδίως αυτοί που πάσχουν από διατατική μυοκαρδιοπάθεια.Background: Cardiac resynchronization therapy (CRT) has proved to be effective in improving morbidity and mortality in patients suffering from severe congestive heart failure. Its efficacy has been shown to be greater in patients with left bundle branch block (LBBB). The aim of our study was to investigate whether the proposed LBBB criteria by Strauss identify patients with a better response to CRT. Methods: We evaluated a group of 48 patients with symptomatic heart failure (ischemic or non-ischemic etiology), despite optimal drug therapy. The study inclusion criteria were LVEF ≤35% and the presence of LBBB with QRS ≥130 msec in the ECG prior to implantation. The patients under study were subjected to CRT-D implantation in our electrophysiology center from January 2013 until December 2017. Patients were divided into 2 groups depending on whether they presented Strauss LBBB or not. Results: Of the 22 Strauss LBBB patients, 20 (90.9%) responded to CRT device therapy while the remaining 2 (9.1%) patients were non-responders (p <0.01). The non-responding group had a significantly higher risk of hospitalizations (p <0.01) and ventricular arrhythmias (p =0.03) during follow-up compared to responders. Interestingly, while the incidence of mortality during follow-up was low (0.04%), the 2 patients who died were non-responders to CRT therapy. At the end of follow-up, a significant increase in ejection fraction (18% increase) and a significant decrease in LVESV (74.1) were noticed in Strauss LBBB patients (p <0.001) while a significant but quiet lower increase in ejection fraction (5%) and decrease in LVESV (27,6) were noticed in non strauss group (p <0.001). Finally, in patients with dilated cardiomyopathy and Strauss LBBB, an improvement of the ejection fraction by 22% versus 6% in patients with conventional LBBB was observed (p <0.001). Conclusion: The Strauss LBBB patients have better clinical and echocardiographic response than LBBB patients, particularly in those with dilated cardiomyopath
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
- …
