1,721,012 research outputs found
Isolated Vaginal Agenesis Associated with Multiple Gastrointestinal Anomalies: A Case Report
No full textMore than 50% of infants with esophageal atresia have associated anomalies. We present a case report of a 46XX neonate with long-gap esophageal atresia and tracheoesophageal fistula (EA/TEF), anorectal malformation, bowel duplication and vaginal agenesis. This is an unusual association of abnormalities which had not yet described in literature
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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
Continence and quality of life with the modified Heitz-Boyer-Hovelacque rectal bladder for children with urinary incontinence following bladder exstrophy
No full textBackground Bladder exstrophy and epispadias are severe congenital anomalies associated with an open bladder and urinary sphincter. Despite modern reconstruction, there is a significant incidence of residual or recurrent urinary incontinence that impacts on quality of life (QoL) and self-esteem, which in turn limits social interaction (Figure). The present study involved 14 patients, mainly from a Middle Eastern country, and reported the early findings with a modification of the Heitz-Boyer-Hovelacque rectal bladder technique for both urinary and faecal control. Study design Fourteen children, with a median age of 8.1 years, with poor quality of life and low self-esteem because of urinary incontinence and small polypoidal open bladders of 5–15 ml volume, mostly after bladder exstrophy surgery, were managed with a modification of the Heitz-Boyer-Hovelacque rectal bladder technique keeping an intact anal sphincter. The retrorectal pulled-through colon was anastomosed to the posterior wall of the rectum just above the external sphincter complex, thereby avoiding any possible injury to the anal sphincter. All patients had a normal colon and a competent anal sphincter without lumbosacral spinal or nerve anomalies. Results Ten children had a 5- to 10-year follow-up, one child had a 15-year follow-up, and three others, that were also continent, were excluded because of a <5-year follow-up. There were no postoperative complications, and all were dry and odour-free by day within 2–4 weeks of surgery. Two children still had minor urinary loss at night. There were no UTIs and renal function remained unimpaired. Eleven years after surgery, one child underwent excision of a pedunculated benign inflammatory polyp from the tip of the left ureter because of recurrent torsion and bleeding, there was no recurrence at the 2-year follow-up. None of the rectal or ureteric biopsies from any of the children showed metaplasia or neoplasia; however, in view of the potential long-term risks, all children were placed on a lifelong ‘proctoscopy and biopsy’ protocol. Discussion The ability to be dry and odour-free, and to wear normal clothing had a striking impact on QoL and psychological well-being of the children and their families. This was reflected in their positive overall approach, voluntary school attendance, and enthusiastic participation in communal events. All agreed that their improved genital appearance markedly contributed to their better body image and increased self-esteem. Conclusion These significant benefits, at a crucial time in the child's life, outweigh the potential risk of long-term neoplasia. Therefore, the Heitz-Boyer-Hovelacque rectal bladder technique is recommended with long-term proctoscopic follow-up.[Figure presented
Correction of bladder exstrophy in adolescent: 2 case report
No full textIntroduction: bladder exstrophy is characterized by an incomplete development of anterior portion of bladder, urethra, abdominal
wall and a median separation of pubic symphysis. We describe 2 clinical cases in adolescent treated with different
surgical approach. Materials and Methods: two patients, one male and one female, respectively, 10 and 14 years old. Both
cases had relapse: the bladder plate was performed in female when she was 2 years and in male when he was 6 years old.
The male showed bladder exstrophy with epispadias; the female showed bifido clitoris, absence of minora labia with a small
vaginal orifice. In both patients ano-rectal manometric and barium enema had normal parameters. The x-Ray basin showed
diastasis of pubic bones, respectively, 7.5 cm in male and 10 cm in female. The male had closure of bladder and abdominal
wall with transformation of epispadias to peno-scrotal hypospadias. The female had rectal reservoir (about 250cc), with amputation
of the rectum with Hartmann’s method and recanalization with Duhamel’s method, anastomosis uretero rectal and
vaginoplasty. Results: clinical and laboratory follow-up to date is 6 months. The female holds the urine about 2-3 hours during
the day; in the night losses are not reported; the male shows dehiscence of abdominal and vesical wall with suprapubic
fistula and loss of urine. The urethral peno-scrotal meatus appears patent. Conclusions: our experience, although limited in
the number of cases and in the time of observation, is in agreement with the literature: we can say that the correction of
bladder exstrophy in adolescents might be a urinary diversion with creation of rectal reservoir, useful for age of the patients
and postoperative management. It is always necessary an adequate follow-up to check any complications
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