1,721,070 research outputs found
Kiri M. V. G. Malacarne'le
Full text linkEgle-Eglanea, Franco Francesca, krahvinnaMalacarne, Michele Vincenzo Giacinto, 1744-1816, itaalia meedik, anatoomia ja kirurgia professo
Introducción a Memory Matters: navegando por la historia del arte de los medios, la ciencia y la tecnología
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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
Corporate diversification and the cost of debt: the role of segment disclosures
No full textPrevious theoretical arguments suggest that industrial diversification provides a co-insurance effect that decreases the firm's default risk. In this paper, we endogenously estimate a firm's segment disclosure quality and investigate whether the quality of segment disclosures significantly affects bond investors' assessment of the coinsurance effect of diversification. We document that bonds issued by industrially diversified firms with high-quality segment disclosures have significantly lower yields than bonds issued by diversified firms with low-quality segment disclosures. We also find that the negative relation between industrial diversification and bond yields becomes stronger when firms improve segment disclosures as a result of FAS 131. Finally, we show that high-quality segment disclosures are associated with lower syndicated loan spreads for a subsample of loans issued by large bank syndicates, which are more likely to rely on publicly reported segment information
Executive Deferral Plans and Insider Trading†
No full textWe study executive equity contributions to nonqualified deferred compensation plans, which consist of the election to defer part or all of the executive's annual base salary and other cash pay into the company's stock. These transactions provide executives with an alternative channel to purchase shares in the firm while benefiting from an affirmative defense against illegal insider-trading allegations. Using a large sample of executive equity deferrals over 2000-2014, we find evidence that executives use these transactions as a means to acquire the company's stock during blackout windows. Consistent with the conjecture that deferrals can benefit from lower litigation costs that inhibit insider trades before the release of corporate news, we also find that the deferred amounts are significantly higher (lower) before the disclosure of good (bad) earnings news. These results suggest that executives can use equity deferrals to circumvent Rule 10b5 trading restrictions and generate significant returns through the timing and content of corporate disclosures around these transactions. Together, our evidence supports the recent concerns that executives might be engaging in strategic information releases around Rule 10b5 transactions
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
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