1,720,973 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
Antidepressant therapy may offer benefit in COPD
No full textWe share Barnes’ concern [1] about the neglect of this common and burdensome condition. As treatment to alter the progression of COPD is still lacking, current clinical management focuses on palliation of breathlessness, treatment of infections, and optimisation of function. The latter goal has been modestly but successfully achieved with pulmonary rehabilitation [2], which improves clinical outcomes without affecting the underlying disease mechanism. Another approach to improving the dismal quality of life of COPD sufferers is suggested by their high rates of anxiety and depression. These psychological symptoms exacerbate the misery of COPD and, if present before lung damage, may contribute to its usual aetiology by fostering nicotine dependence and impairing attempts to quit. We thus became interested in examining the usefulness of antidepressant treatment in COPD patients with co-morbid anxiety or depression. Limited trial evidence indicates that selective serotonin reuptake inhibitor (SSRI) treatment may be of benefit [3]. The North East Wales Local Research Ethics Committee approved our double-blind, randomized controlled trial of three months treatment with the SSRI citalopram (10-20 mg/day) v placebo. The St Georges Respiratory Questionnaire (SGRQ), used to measure health status in airways disease, was our primary outcome; reductions of four points or more are considered clinically significant. Of 22 patients screened, 8 were randomised, and 7 completed the three month trial. Of 5 patients randomised to citalopram, one withdrew due to insomnia and restlessness (‘activation syndrome’), 3 had striking improvements in health status as measured by reductions in SGRQ total score [11, 12.6, 8.2, 0.5]; the fourth experienced psychological symptom relief according to our secondary measures, the Hospital Anxiety and Depression Scale and the Depression in Medical Illness scale. None of the 3 patients completing three months of placebo showed changes in SGRQ [0.8, 1, 2.3] or the other two measures. Neither treatment affected spirometry. Our small trial indicates dramatic changes in health status are possible for COPD patients with prominent psychological symptoms. The magnitude of health status gains with successful antidepressant treatment appears more striking than that typically observed with optimised conventional therapy for COPD [3,4]. Although a difficult population to study, focused treatment of psychological disturbance in COPD warrants a carefully-designed, large-scale trial
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
"Bigger Is Better?" What Drives Outcomes in Management of Acute Exacerbations of Chronic Obstructive Pulmonary Disease?
No full textkoamabayili/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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