1,720,965 research outputs found
An Economic Model of Youth Smoking: Tax and Welfare Effects
Get PDFThis paper presents a model of smoking choice in which rationality is bounded by limitations in intertemporal computational abilities. The model is applied to the youth decision to initiate smoking. Lifetime smoking paths of representative smokers indicate that youths may experience a reduction in lifetime utility and come to regret their decision to smoke. It is suggested that public policy interventions that raise the near term cost of smoking will be more effective in reducing lifetime smoking than informational campaigns that emphasize future health costs. However, youth taxes would have to be quite high to substantially reduce smoking rates among youths who have already begun to smoke. Also, low youth taxes would not prevent future smoking as an adult, although they would reduce smoking rates and lead to earlier quitting.Cigarettes, smoking, addiction, Behavioral economics
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
Import Policy Effects on the Optimal Oil Price
No full textA steady increase in oil imports leaves oil importing countries increasingly vulnerable to future oil price shocks. Using a variation of the U.S. EIA's oil market simulation model, equilibria displaying multiple price shocks is derived endogenously as a result of optimizing behavior on the part of OPEC Here we investigate the effects that an oil import tariff and a petroleum stock release policy may have on an OPEC optimal price path. It is shown that while both policies can reduce the magnitude of future price shocks neither may be politically or technically feasible.
Supply diversion, ineffective quantitative restrictions, and the nonequivalence of tariffs, quotas, and vers
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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
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