1,720,969 research outputs found
Lessons learned from the first 100 laparoscopic liver resections: not delaying conversion may allow reduced blood loss and operative time.
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
LESSONS LEARNT FROM THE FIRST 100 LAPAROSCOPIC LIVER RESECTIONS: NOT DELAYING CONVERSION MAY ALLOW REDUCING BLOOD LOSS AND OPERATIVE TIME.
No full textVariations 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
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Simultaneous arterial and biliary repair after liver transplantation
No full textThe presence of hepatic arterial stenosis (HAS) in patients with biliary
strictures (BS) following liver transplantation is common. The treatment
of these biliary complications remains diffi cult. The aim of this study is to
report 7 patients with BS associated with HAS treated by simultaneous artery
and biliary surgical repair.
Among 787 OLT performed from 1991 to 2005, 12 patients (1.5%) experienced
BS associated with HAS. Retransplantation was indicated in 5 patients with
intrahepatic biliary stenosis. In seven cases, with exclusive extrahepatic BS
and HAS, simultaneous biliary and arterial repair were considered. Patients,
aged from 31 to 60 years, underwent liver transplantation and experienced
BS 42 days and HAS 66 days after transplantation. Simultaneous biliary and
arterial repair was indicated in the presence of biliary duct to duct stenosis in
6 cases and after Roux-en-Y choledochojejunostomy in one case. All arterial
stenosis were more than 50% of the arterial diameter. Six patients had had
BS previously treated by plastic prothesis and two had had HAS previously
treated by endovascular stent or pneumatic dilation.
Arterial repair was the fi rst step of the procedure with a complete resection of
the arterial stricture followed by a termino-terminal arterial anastomosis. No
graft interposition was needed. In one case stenosis involved only the right
hepatic artery while in the 6 other cases the stenosis was located at the site
of the anastomosis. In all cases resistance index was > 0.5 on intra-operative
doppler ultrasound after reconstruction. Biliary repair included in all cases
a Roux-en-Y biliaryjejunostomy. There were no postoperative deaths and
morbidity was observed in only one patient. No postoperative biliary fi stulas
were observed and the mean hospital length of stay was 16 days. With a mean
follow up of 67 months, all patients are alive without graft loss. Recurrent
arterial stenosis was discovered in one patient and although successfully
treated by endovascular stent, he developed biliary strictures 13 months later
and was treated by iterative Roux-en-Y hepaticojejunostomy.
Results of our series demonstrated that simultaneous biliary and arterial
surgical repair is safe and effi cient in patients with extrahepatic biliary stenosis
associated with arterial stenosis complicating liver transplantation
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