1,720,988 research outputs found
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
Liver cancer in European children, 1978-1997. Report from the Automated Childhood Cancer Information System project.
No full textAbstract
Data on 849 children diagnosed with malignant hepatic tumours (International Classification of Childhood Cancer, Group VII) before the age of 15 years during 1978-1997 in Europe were extracted from the ACCIS database. Age-standardised incidence during 1988-1997 was 1.5 per million overall, 1.2 per million for hepatoblastoma and 0.2 per million for hepatic carcinoma. Over 90% of cases of hepatoblastoma occurred before age 5 years, whereas hepatic carcinoma had a fairly flat age distribution. Both tumours had an incidence in boys of 1.5-1.6 times that in girls. There were no significant time trends in incidence during 1978-1997. Five-year survival from hepatoblastoma diagnosed during 1988-1997 was 63% overall, and ranged from 52% in Eastern Europe to 84% in the North. Survival from hepatic carcinoma was much lower (37%). Between 1978-1982 and 1993-1997, 5-year survival (95% confidence interval (95% CI)) increased from 28% (95% CI 18-39) to 66% (95% CI 55-74) for hepatoblastoma and from 17% (95% CI 6-33) to 50% (95% CI 26-70) for hepatic carcinoma. These increases reflect the impact of advances in treatment of childhood liver cancer at a population level
Bone tumours in European children and adolescents, 1978-1997. Report from the Automated Childhood Cancer Information System project.
No full textAbstract
Data on 5572 children and adolescents diagnosed with malignant bone tumours (International Classification of Childhood Cancer, Group VIII) before the age of 20 years during 1978-1997 in Europe were extracted from the Automated Childhood Cancer Information System (ACCIS) database. Age-standardised incidence among children during the period 1988-1997 was similar for boys and girls aged 0-14 years (5.5-5.6 per million). Among adolescents aged 15-19 years, males had higher incidence (19.3 per million) than females (10.7 per million). Among children, osteosarcoma accounted for 51% of registrations and Ewing's sarcoma for 41%. Among adolescents, 55% of registrations were osteosarcoma and 28% Ewing's sarcoma. Both tumours had their highest incidence in late childhood or early adolescence. There were no significant time trends in incidence during 1978-1997. Five-year survival estimates for patients diagnosed during 1988-1997 were, respectively, 59% and 51% among children and adolescents with osteosarcoma and 62% and 30% among children and adolescents with Ewing's sarcoma. Between 1978-1982 and 1993-1997, survival increased for both children and adolescents with osteosarcoma, and for children with Ewing's sarcoma
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
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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