1,720,966 research outputs found
La laparoscopia nella diagnosi e nel trattamento di un raro caso di emorragia digestiva da gastrointestinal stromal tumor (GIST).
No full textLaparoscopy represents, for general surgery, the newest innovative technique: it allows diagnosis and therapy at the same time. This technique allows a wide application field in abdominal surgery both in elective and emergency settings, for the possibility to explore easily, rapidly and completely the peritoneal cavity. A case of laparoscopic diagnosis of a rare case of upper intestinal bleeding due to GIST is reported
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
[Laparoscopy in emergency: treatment of choice in acute abdomen].
No full textFrom 1992 to November 1999, 225 consecutive cases of acute abdomen were observed: 163 suspicious acute appendicitis, 7 ovarian cysts with suspect torsion, 4 intestinal occlusions, 1 digestive hemorrhage due GIST (Gastro-Intestinal Stromal Tumor), 1 case of hemoperitoneum after laparoscopic appendectomy and 49 cases of acute cholecystitis. In the 225 cases of emergency laparoscopic operations for acute abdomen the diagnostic accuracy has been of 99.5%, with only one case of conversion in to laparotomy for diagnosis. The conversion from laparoscopic to laparatomic surgical technique was registers in 2 cases (1%). The realimentation started in all the cases with a liquid diet as soon as 6 hours after the operation and with solid foods the following morning. The Authors haven't registered wound contaminations. The patients of working age rehabilitated in 8 days (between 7 and 21 days). In the athletic patients the average rehabilitation time was 15 days. On the base of the results obtained with their video-laparoscopy experience in acute abdomen emergency surgery, the Authors confirm that this technique can be advised as Emergency Surgery's first choice treatment
[A rare case of gastric bleeding due to left-sided portal hypertension].
No full textThe authors report an uncommon gastric bleeding rate due to splenic hilum compression by a pancreatic cyst. The syndrome to be brought back to some sectorial portal hypertension form (left-sided portal hypertension) is difficult to diagnose because of absence of esophageal varices and other portal hypertension signs in an unchanged liver functionality patient. To put a correct diagnosis about gastric bottom bleeding varices without hepatic origin, the authors recommend to use arteriography and CT. Surgical treatment is proved to be the election one because of useless attempt of bleeding control through hepatic artery endoscopic sclerosis or embolization
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
[Popliteal artery entrapment syndrome. Case report].
No full textPopliteal artery entrapment syndrome (PAES) is an uncommon pathological entity, due to segmental popliteal artery compression by the surrounding myofascial structures. Clinical symptoms may appear acutely, with temporary ischemic attacks, or chronically, with claudicatio intermittens of the involved calf and for 30% bilateral. Treatment, generally, is surgical by simple freeing of the popliteal artery from the surrounding myofascial structures or by autologous vein (saphenous v.) interposition grafting and patching, or bypass without vessel resection. The case of a 44-year female with left calf acute pain symptoms, cold skin at the thermotouch, hypo-paresthesia with fifth toe cyanosis and walking inability is reported. The surgical treatment, because of early diagnosis, consisted of simple cut of myofibrous bundle starting from the medial head of the left gastrocnemious muscle and compressing the popliteal artery, with clinical complete resolution
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
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