1,720,964 research outputs found
The importance of stress-induced cardiac wall motion abnormalities in the evaluation of drug intervention
No full textImproved Doppler detection of proximal left anterior descending coronary artery stenosis after intravenous injection of a lung-crossing contrast agent: A transesophageal Doppler echocardiographic study
No full textEvaluation of the effects of gallopamil in patients with effort angina by transesophageal atrial pacing two-dimensional echocardiography
No full text[Acute effects of propionyl-L-carnitine on anomalies of parietal kinetics of the left ventricle induced by atrial pacing in patients with ischemic heart disease. A bidimensional echocardiographic study]
No full textEvaluation of coronary-artery anatomy and physiology with the use of transesophageal echocardiography
No full text[Effectiveness and duration of the effect of gallopamil, in single-dose oral administration, in stable exertion angina. A comparison with propranolol and diltiazem]
No full text
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
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