1,720,962 research outputs found
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
Prescribing, dosing and titrating exercise in patients with hypertrophic cardiomyopathy for prevention of comorbidities: Ready for prime time
No full textThe benefits of physical activity are well established, leading to both cardiovascular and non-cardiovascular benefits, improving quality of life and reducing mortality. Despite such striking body of evidence, patients with hypertrophic cardiomyopathy are often discouraged by health professionals to practice physical activity and personalised exercise prescription is an exception rather than the rule. As a result, hypertrophic cardiomyopathy patients are on average less active and spend significantly less time at work or recreational physical activity than the general population. Exercise restriction derives from the evidence that vigorous exercise may occasionally trigger life-threatening arrhythmias and sudden cardiac death. However, while participation in competitive sports should be prudentially denied, hypertrophic cardiomyopathy patients can benefit from the positive effects of regular physical activity, aimed to reduce the risk of comorbidities and improve the quality of life. Based on this rationale, exercise should be prescribed and titrated just like a drug in hypertrophic cardiomyopathy patients, considering individual characteristics, symptoms, past medical history, objective individual response to exercise, previous training experience and stage of disease. Type, frequency, duration, and intensity should be defined on a personal basis. Yet exercise prescription in hypertrophic cardiomyopathy and its long-term effects represent major gaps in our current knowledge and require extensive research. We here review existing evidence regarding benefits and hazards of physical activity, with specific focus on viable modalities for tailored and safe exercise prescription in these patients, highlighting future developments and relevant research targets. © The European Society of Cardiology 2020
Effects of exercise training on exercise aerobic capacity and quality of life in hemodialysis patients
No full textBACKGROUND: Physical and aerobic capacity are extremely limited in dialysis patients, but it is uncertain whether or not exercise training is safe or has beneficial effects. This study aimed to assess the effects of exercise training on functional capacity and quality of life of hemodialysis patients.
METHODS: Ten hemodialysis patients (7 men, 3 women, aged 37 +/- 7 years) free from severe comorbidities were recruited. They underwent training sessions (up to 90 minutes of submaximal exercise) twice a week, on nondialysis days, for 12 months. At baseline and after the physical training program, all patients underwent biochemistry, cardiopulmonary exercise test, echocardiography and a self-rated health test (SF-36).
RESULTS: At baseline, dialysis patients showed impaired VO2 uptake (20.6 +/- 5.0 ml/kg/min vs. 34.2 +/- 6.0 ml/kg/min, p<0.001) and peak working capacity (115 +/- 36 W vs. 192 +/- 46.7 W, p<0.001) compared with normal controls. Following the training program, both peak VO2 (20.4 +/- 4.9 ml/kg/min vs. 25.1 +/- 6.5 ml/kg/min, p<0.05), VO2 at anaerobic threshold (12.8 +/- 1.9 ml/kg/min vs. 15.1 +/- 3.8 ml/kg/min, p<0.05), peak working capacity (113 +/- 33 W vs. 134 +/- 37 W, p<0.01) and SF-36 scores improved. No side effects related to intervention occurred.
CONCLUSIONS: Dialysis patients showed impaired muscular exercise capacity, but 12 months of moderate exercise training was able to improve their physical function, aerobic capacity and quality of life. Our study suggests that mild, regular physical activity should be recommended and encouraged as an important aspect of the care of selected dialysis patient
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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