1,721,031 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
Wireless capsule endoscopy in a case of small bowell obstruction: not always contraindicated.
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Endoscopic placement of videocapsule in a pediatric population. (I.F.3.923)
No full textIn regard to the article “Endoscopic capsule delivery for patients with dysphagia, anatomical abnormalities, or gastroparesis,”1 we would like to report the procedure that we have used to introduce the video capsule in a pediatric population.
From December 2003 to present, we have positioned the video capsule in 15 pediatric patients (age range 18 months to 11 years) by using the following technique. A Roth net for foreign-body extraction is first introduced into the operative channel of a pediatric endoscope. Some of the net's mesh then is broken to better release the capsule in the stomach. The video capsule, already activated, is placed into the net (Fig. 1), with the distal metallic end of the net not protruding from the top of the capsule. To avoid posterior pharyngeal damage during the introduction of the endoscope, the net with the video capsule has to be kept as straight on the axis of the endoscope as possible. General anesthesia of the patient is required, and the endoscopist is positioned behind the patient's head
Gastro-oesophageal reflux and endoscopic antireflux technique: personal experience with endocich
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