1,721,535 research outputs found
Preliminary experience with laparoscopic Foley′s YV plasty for ureteropelvic junction obstruction in children
No full textIntroduction: Laparoscopic dismembered pyeloplasty is an acceptable option for ureteropelvic junction (UPJ) obstruction in the paediatric population. We compared our results of laparoscopic dismembered and non-dismembered Foley′s YV pyeloplasty. Materials and Methods: Children presenting with hydronephrosis secondary to UPJ obstruction formed the study group. Foley′s YV plasty was planned whenever it was observed that a tension free dismembered pyeloplasty was not possible in spite of all possible manoeuvres. Children were followed up for urinary infection, and renogram was repeated after 3 months. Results: During the study period, 108 children (63 male and 45 female) with a mean age of 4.94 ± 2.78 years underwent laparoscopic dismembered pyeloplasty and the remaining 11 children (5 male and 6 female) with a mean age of 4.00 ± 1.776 years underwent laparoscopic Foley′s YV plasty. There were no major peri-operative complications noted and conversion to open was not necessary in any child. Renogram done at 3 months post-operatively showed good drainage and improvement of renal function. Conclusions: Laparoscopic Foley′s YV pyeloplasty is a safe and effective technique in appropriately selected cases of primary UPJ obstruction in children
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
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
A Hierarchy of Knowledge for the Formal Analysis of Security-Sensitive Business Processes
No full textSecurity-sensitive business processes are business processes that must comply with security requirements such as authorization constraints or separation or binding of duty. As such, they are difficult to design and notoriously prone to error, and a number of approaches have been proposed to formalizing and reasoning about models of such processes to detect potential vulnerabilities. In this paper, we present an approach that introduces the notion of knowledge for the formal analysis of security-sensitive business processes. We structure knowledge hierarchically, in different levels that can interact with each other in order to derive new information, which allows us to specify at different levels information about sets of critical tasks and thereby control the process execution and enforce security properties
Silicone Foley′s catheter: A useful splint in ear surgeries
No full textMaintenance of ear projection and post auricular sulcus in staged ear reconstruction in microtia is a trying problem. So also is the maintenance of the patency of the external auditory meatus following recanalization and meatoplasty. Numerous splints and dressing techniques have been described for the above situations. Some of the problems encountered include the availability of the materials, cost, expertise in fabrication and compliance.Aims: To devise a simple, reliable, inexpensive and readily available splint for the maintenance of post auricular sulcus and external auditory meatus opening. Settings and Design: A silicone catheter is made out of a soft and inert material that doesn′t cause tissue necrosis or any loss of skin graft. The basic design is that of a simple, self-retaining type of splint that doesn′t dislodge and can be prepared within minutes on the operating table.Materials and Methods: This splint has been used in four cases of microtia reconstruction and one case of congenital external auditory meatus stenosis between June 2006 and August 2007. A 14 or 16 Fr silicone Foley′s catheter was used. The proximal end of a catheter of required length was retained and the distal part was cut off. The catheter was looped into a circle around the base of the reconstructed ear and secured in position with a suture. A similar construct was used in cases of external auditory meatus reconstruction or recanalization. The funnel-shaped distal drainage end was sutured to the circular frame near the region of the tragus. This funnel was inserted into the external auditory canal.Results: The catheter was found to sit snugly in the newly created sulcus, thereby maintaining the sulcus and ear projection. It aided in maintaining the meatal opening of a satisfactory diameter in the case of external auditory canal recanalization. It was never found to slip or get dislodged in any of the cases. There was no skin graft loss or tissue necrosis due to the use of the splint.Conclusions: The silicone Foley′s catheter is found to be a simple, readily available, inexpensive and reliable self-retaining splint following ear elevation in microtia and external auditory meatus recanalization. The catheter is easily constructed and applied intraoperatively. The results following its usage have been uniformly good in all cases without causing any adverse events at the operated site or discomfort to the patient ensuring good compliance
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
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