1,720,975 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
Comparison of intra-articular triamcinolone hexacetonide and triamcinolone acetonide in oligoarticular juvenile idiopathic arthritis
No full textObjective. To compare the efficacy and safety of intra-articular triamcinolone hexacetonide (TH) and triamcinolone acetonide (TA) in children with oligo-articular juvenile idiopathic arthritis (JIA). Methods. One hundred and thirty joints of 85 patients undergoing intra-articular injections were randomly treated with either TH or TA depending on the availability of the drug. The efficacy of both treatments was evaluated prospectively in a blinded fashion. A good response was defined as a decrease in the articular score of ≥60% from baseline. Clinical, laboratory and immuno-logical variables were noted in order to examine possible factors, other than treatment, predictive of the result. Results. Seventy injections were performed using TH and 60 with TA. The two groups were comparable for clinical, immunological and laboratory characteristics. The rate of response was significantly higher with TH than with TA: 81.4% vs 53.3% (P = 0.001) at 6 months, 67.1 vs 43.3% (P = 0.006) at 12 months, and 60 vs 33.3% (P = 0.002) at 24 months. Conclusion. At comparable doses TH appeared to be much more effective than TA for intra-articular use, in both short- and long-term follow-up. This result was not affected by disease duration or degree of local and systemic inflammation
Analysis of the Bispectral Index during natural sleep in children
No full textThe Bispectral Index (BIS) is a system used to measure sedation levels. Some investigators recently analyzed changes in the BIS during natural sleep in adults and found that the BIS diminished considerably as sleep became deeper. No such studies have been undertaken to investigate changes in the BIS in sleeping children. The aim of this work was to assess the trend of the BIS in the various stages of sleep in a group of children, performing a descriptive analysis on a limited number of cases. We evaluated 15 children with negative clinical findings and a normal electroencephalogram (EEG) as part of their follow-up for prior episodes of epilepsy, recording the BIS and EEG in a waking state, in the various stages of sleep and on reawaking. For each stage, the mean value, the standard deviation, and the range of BIS values were calculated. The results showed that the BIS decreased progressively as sleep became deeper. The correlation between the stage of sleep and the BIS was significant. On reawaking, a slow increase was apparent in the BIS. ©2005 by the International Anesthesia Research Society
The cold pressor test: comparison between children with headache and their healthy peers
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