1,721,033 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
Aortic Luminal Remodeling After Intravascular Stent Therapy for Coarctation: Intermediate Results
Get PDFIt is perceived that repaired aortic coarctation no longer requires surveillance. Furthermore, it is unknown what happens to the aorta post-stent therapy. To understand whether and how the aorta remodels, we analyzed paired serial imaging of patients post-stent therapy against baseline data. A total of 135 patients underwent coarctation stenting. Mean follow-up time was 3.98 years, where 5% of patients underwent re-intervention due to complications, 3% developed aneurysms and 3% had stent fractures. There was significant reduction in aortic diameter immediately proximal to the left carotid artery, left subclavian artery, and the aorta distal to the stenosis (pM.Sc
Aortic Luminal Remodeling After Intravascular Stent Therapy for Coarctation: Intermediate Results
No full textIt is perceived that repaired aortic coarctation no longer requires surveillance. Furthermore, it is unknown what happens to the aorta post-stent therapy. To understand whether and how the aorta remodels, we analyzed paired serial imaging of patients post-stent therapy against baseline data. A total of 135 patients underwent coarctation stenting. Mean follow-up time was 3.98 years, where 5% of patients underwent re-intervention due to complications, 3% developed aneurysms and 3% had stent fractures. There was significant reduction in aortic diameter immediately proximal to the left carotid artery, left subclavian artery, and the aorta distal to the stenosis (pM.Sc
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
Functional Moderate to Severe Tricuspid Regurgitation in Adults undergoing Transcatheter Atrial Septal Defect Closure
No full textBackground: A large proportion of patients continues to have moderate to severe tricuspid regurgitation (TR) after transcatheter atrial septal defect (ASD) closure.
Objective: To determine the clinical significance of functional TR in ASD patients and identify the baseline predictors of persistent TR after ASD closure.
Methods: Clinical data were collected from hard-copy and electronic records at the University Health Network (UHN), Toronto, Canada. The clinical registry was linked to Ontario population-based health administrative databases.
Results: Age ≥65 years, severe TR, and right ventricular systolic pressure (RVSP) were independent baseline predictors of persistent TR. ICES analyses showed patients with baseline moderate to severe TR (n=750) were not associated with higher cardiovascular mortality compared to patients with baseline mild/no TR (n=199) after adjust for cardiovascular co-morbidities.
Conclusions: Perhaps offering early ASD closure or concomitant tricuspid valve intervention may be of benefit to patients at risk for persistent TR.M.Sc
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
Functional Moderate to Severe Tricuspid Regurgitation in Adults undergoing Transcatheter Atrial Septal Defect Closure
Get PDFBackground: A large proportion of patients continues to have moderate to severe tricuspid regurgitation (TR) after transcatheter atrial septal defect (ASD) closure.
Objective: To determine the clinical significance of functional TR in ASD patients and identify the baseline predictors of persistent TR after ASD closure.
Methods: Clinical data were collected from hard-copy and electronic records at the University Health Network (UHN), Toronto, Canada. The clinical registry was linked to Ontario population-based health administrative databases.
Results: Age ≥65 years, severe TR, and right ventricular systolic pressure (RVSP) were independent baseline predictors of persistent TR. ICES analyses showed patients with baseline moderate to severe TR (n=750) were not associated with higher cardiovascular mortality compared to patients with baseline mild/no TR (n=199) after adjust for cardiovascular co-morbidities.
Conclusions: Perhaps offering early ASD closure or concomitant tricuspid valve intervention may be of benefit to patients at risk for persistent TR.M.Sc
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