1,721,061 research outputs found
Frozen Elephant Trunk: Clinical or Personal Equipoise
No full textFilmed at the 2018 EACTS Annual Meeting in Milan, Italy, Mohamad Bashir of the Barts Heart Centre in London, UK, moderates a discussion on the frozen elephant trunk procedure. Dr Bashir is joined by Malakh Shrestha of Hannover Medical School in Germany, Konstantinos Tsagakis of the University of Essen in Germany, Jorge Mascaro of Queen Elizabeth Medical Center in Birmingham, UK, and Davide Pacini of S. Orsola-Malpighi Hospital in Bologna, Italy. They discuss the used of this procedure, details of the technique, and evidence around its application
When imperfections in labour market meet imperfections in product market. A model with firm-specific monopoly unions and vertical product differentiation
No full textQuality differentiation is a well-known strategy that firms use to increase their
market power. Indeed, there is a vast literature on vertical differentiation studying
firms’ incentives to differentiate in terms of quality. We thus wonder how imperfections in the labour market affect firms’ quality competition and, in turn, the average quality, as well as consumer welfare in the market. We gather the following results. Product differentiation affects competition between firms in the product market as well as between unions in the wage setting. In particular, while the wage set to produce the high quality good is always increasing in its quality level, the wage set to produce the low quality good is non-monotone in its quality: as the low quality increases, initially, its sales increase because of a stealing effect from the rival high quality firm and, by increasing employment and reducing wage elasticity of labour demand, this leads to higher wages. When low quality becomes sufficiently close to the high quality, however,
the effect of tough competition in product market also translates to the wage
setting process, which makes the wage of the low-quality firm decreasing in its
quality. The effects of quality differentiation on wages, in turn, affects quality competition. In particular, although wages, ceteris paribus, are increasing in the
quality of the high-quality firm, the latter chooses to improve its quality as much
as possible. Regarding the choice of the low quality, instead, the presence of firm-specific unions makes the overall effect of increasing quality on the price-wage margin stronger than in a perfectly competitive (non-unionized) labour market leading
the low-quality firm to increase its quality level. As a result, average quality in the
market is greater than with perfectly competitive labour markets
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
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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