1,721,145 research outputs found
Advantages of the first-step totally laparoscopic approach in 2-staged hepatectomy for colorectal synchronous liver metastasis
No full textPreoperative detection of intrahepatic venovenous shunt treated by microwave precoagulation during right hepatectomy
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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
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
Use of BiClamp decreased the severity of hypocalcemia after total thyroidectomy compared with LigaSure: A prospective study
No full textBackground Postoperative hypocalcemia is the most common complication after thyroidectomy. New surgical devices have been propose to achieve vessel sealing and hemostasis. However, the risk of parathyroid glands damage has not been fully elucidated. This prospective study was designed to evaluate the severity of hypocalcemia after total thyroidectomy by using two different sealing devices. Methods Between January 2005 and December 2006, 86 patients underwent total thyroidectomy by using BiClamp (R) (n = 46) or LigaSure (R) (n = 40) devices in our institution. The severity of postoperative hypocalcemia was analyzed. Results No mortality or recurrent laryngeal nerve palsy was observed. Patients characteristics were similar in both groups. The mean operation time was significantly shorter in the BiClamp group (142 +/- 35 minutes versus 170 +/- 57 minutes, P = 0.023). Eleven patients had symptomatic hypocalcemia. Hypocalcemia (< 2 mmol/l) at postoperative day 1 was more frequent in the LigaSure group than in the BiClamp group (P = 0.034). Significantly more patients in the LigaSure group required oral calcium supplementation than in the BiClamp group (67.5% versus 34.7% respectively; P = 0.002). Conclusion The present prospective study suggests that total thyroidectomy can be performed safely with both surgical devices. However, BiClamp reduced the operative time and the severity of postoperative hypocalcemia
The Role of "Fatty Pancreas" and of BMI in the Occurrence of Pancreatic Fistula After Pancreaticoduodenectomy
No full textIntroduction Pancreatic fistula (PF) after pancreaticoduodenectomy (PD) is still a serious complication. We hypothesized that the amount of fatty tissue in the pancreatic parenchyma could be associated with the occurrence of PF after PD with pancreatogastrostomy. Material and methods From January 2004 to December 2006, 111 consecutive patients underwent PD with pan c reatogastrostomy. The microscopic amount of fatty tissue in the pancreas was evaluated. Results The morbidity and mortality rates were 35.1% and 1.8%, respectively. PF occurred in 10.8% (n=12). PF was of grade A in nine, grade B in two, and grade C in one patient. Univariate analysis showed that a body mass index (BMI)>25 (P=0.035), a soft pancreatic parenchyma (P=10% of pancreatic fat. Conclusions A pancreatic fatty infiltration of the pancreas over 10% constitutes a risk factor for PF after PD. Age and BMI are useful preoperative predictors of the percentage of pancreatic fat
High intensity focused ultrasound (HIFU) applied to hepato-biliopancreatic and the digestive system - current state of the art and future perspectives
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