1,723,441 research outputs found
Potamogeton pectinatus is constitutively incapable of synthesizing ethylene and lacks 1-aminocyclopropane-1-carboxylic acid oxidase
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6661.pdf (Publisher’s version ) (Open Access
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
Alejandro RABINOVICH, Ignacio ZUBIZARRETA y Leonardo CANCIANI (eds.): Caseros. La batalla por la organización nacional, Buenos Aires, Sudamericana, 2022, 288 pp., ISBN: 978-950-07-6661-6.
Get PDFReview of Alejandro RABINOVICH, Ignacio ZUBIZARRETA y Leonardo CANCIANI (eds.): Caseros. La batalla por la organización nacional, Buenos Aires, Sudamericana, 2022, 288 pp., ISBN: 978-950-07-6661-6.Reseña de Alejandro RABINOVICH, Ignacio ZUBIZARRETA y Leonardo CANCIANI (eds.): Caseros. La batalla por la organización nacional, Buenos Aires, Sudamericana, 2022, 288 pp., ISBN: 978-950-07-6661-6
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
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
Regulating hedge funds.
Get PDFDue to the ever-increasing amounts under management and their unregulated and opaque nature, hedge funds have emerged as a key concern for policymakers. While until now, hedge funds have been left essentially unregulated, we are seeing increasing calls for regulation for both microprudential and macroprudential reasons. In our view, most calls for the regulation of hedge funds are based on a misperception of the effectiveness of financial regulations, perhaps coupled with a lack of understanding of the positive contribution of hedge funds to the financial system. There are real concerns about consumer protection following from the expansion of the consumer base. However, it would be misguided to relax accreditation criteria. A more important issue is the investment of regulated institutions, in particular pension funds, in hedge funds. Since such institutions to enjoy direct or indirect government protection, the investment in hedge funds has to be regulated. However, such regulations are best implemented on the demand side by the pension fund regulator, rather than by directly regulating the hedge fund advisors themselves. Hedge funds provide considerable benefits, not only to their investors and advisors, but more importantly to the economy at large by facilitating price discovery, market efficiency, diversifi cation, and by being potentially able to put a floor under a crisis, a function not easily implemented by regulated institutions due to a minimum capital ratios, relative performance evaluation and other considerations. It would however be imprudent to leave hedge fund advisors completely unregulated since the failure of a systematically important hedge fund has the potential to create such uncertainty as to impede trading and in a worst case scenario cause significant damage to the real economy. These issues cannot be addressed by standard regulatory methodology such as disclosure and activity restrictions. Indeed, supervisors would be well advised to leave the hedge fund sector unregulated in their normal day-to-day activities. However, the regulator needs to have the power to resolve the informational uncertainty caused by the failure of a systematically important hedge funds. Prime brokers and other client banks would in such a scenario have a de facto or a de jure obligation to participate in the expedient removal of the uncertainty. To this end targeted consultation and contingency planning is essential.
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