1,721,129 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
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
Twenty years of Cochrane reviews in menstrual disorders and subfertility
No full textThe past three decades have seen considerable change in the understanding of clinical research methods. There has been an acceptance that RCTs are the best way of establishing treatment effectiveness and a recognition that, while single studies are useful, pooling knowledge from a complete body of work is likely to provide the best evidence. Advances in methodology have been mirrored by the many advances in the field of reproductive medicine, such as assisted reproduction, assessment of male fertility, ovulation induction and laparoscopic surgery. Together, they have led to welcome improvements in the outcomes of fertility treatments. In particular, systematic reviews have become important tools enabling clinicians and patients to make health-care decisions based on evidence from all the available high-quality studies. The move towards identifying and aggregating the highest quality evidence has been led by the Cochrane Collaboration, which this year celebrates 20 years of preparing and publishing systematic reviews. This paper outlines the achievements, progress and challenges of this enterprise to date, with a particular focus on systematic reviews of reproductive medicine.Cindy Farquhar, Vivienne Moore, Siladitya Bhattacharya, Debbie Blake, Andy Vail, Jane Thomas, Ying Cheong, Marian Showell, Helen Nagels, Jane Marjoribanks, on behalf of the Cochrane Editorial Board of the Menstrual Disorders and Subfertility Grou
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
The growth restriction intervention trial : long-term outcomes in a randomized trial of timing of delivery in fetal growth restriction
No full textOBJECTIVE: The Growth Restriction Intervention Trial found little difference in overall mortality or 2-year outcomes associated with immediate or deferred delivery following signs of impaired fetal health in the presence of growth restriction when the obstetrician was unsure whether to deliver. Because early childhood assessments have limited predictive value, we reevaluated them.
STUDY DESIGN: Children were tested with standardized school-based evaluations of cognition, language, motor performance, and behavior. Analysis and interpretation were Bayesian.
RESULTS: Of 376 babies, 302 (80%) had known outcome: either dead or evaluated at age 6-13 years. Numbers of children dead, or with severe disability: 21 (14%) immediate and 25 (17%) deferred groups. Among survivors, the mean (SD) cognition scores were 95 (15) and 96 (14); motor scores were 8.9 (7.0) and 8.7 (6.7); and parent-assessed behavior scores were 10.5 (7.1) and 10.5 (6.9), respectively, for the 2 groups.
CONCLUSION: Clinically significant differences between immediate and deferred delivery were not found
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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