1,721,004 research outputs found
Postoperative radiotherapy with or without elective irradiation of paraortic nodes and liver in rectal cancer patients. A controlled clinical trial of the EORTC Radiotherapy Group
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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
Incidence, prevalence and survival of patients with rare epithelial digestive cancers diagnosed in Europe in 1995-2002.
No full textBACKGROUND AND AIMS: Little is known about the epidemiology of rare epithelial digestive cancers. The aim of this study was to report on their incidence, prevalence and survival across Europe.
METHODS: The analysis was carried out on 50,646 cases diagnosedfrom 1995 to 2002 within a population of 162,000,000 in 21 European countries. Age-standardised incidencerates were computed using the European standard population. Prevalence rates, relative survival and period survivalindicators for the years 2000-2002 were calculated. The expected number of new cases per year and of prevalent cases in Europe was estimated.
RESULTS: There were large variations in gallbladder epithelial cancer incidencerates: the incidence in Eastern Europewas 7 times higher than in the UK & Ireland. Differences between incidencerates were smaller for the other sites. The estimated number of new epithelial cancersarising in the EU each year was estimated to be 11,050 for extrahepatic bile duct cancer, 10,713 for gallbladder cancer, 5427 for anal cancer and 3595 for small intestine cancer. The corresponding estimated number of total prevalent cases was 18,483, 15,620, 40,589 and 13,276. There was also a large variation in the 5-year relative survival rate. For epithelialcancer of the anal canal, this varied between 66% (Central Europe) and 44% (Eastern Europe). The corresponding rates for small intestine cancers were 33% and 20%, for extrahepatic bile duct cancers, 17% and 12% and for gallbladder cancer 13% and 10%.
CONCLUSION: There are large variations within Europein the incidence and survival of rare digestive cancersaccording to geographic area
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
Radiochimiothérapie préopératoire du cancer rectal, nouveau standard ?
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The Besancon experience in preoperative ± chemotherapy for rectal cancer.
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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
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