1,721,031 research outputs found
Mediation of beta-endorphin by ginsenoside Rh2 to lower plasma glucose in streptozotocin-induced diabetic rats.
No full textGoing 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
Nonlinear adjustments in deviations from the law of one price for wholesale hog prices
No full text[[abstract]]This article applies the Band-Threshold Autoregression (Band-TAR) model to investigate whether the law of one price (LOOP) holds in Taiwanese wholesale hog markets during the period from May 1987 through December 2003. We find evidence of a nonlinear mean reversion in deviations from the LOOP for relative hog prices. Our empirical study confirms the presence of thresholds and provides strong evidence in support of the view that the regional hog markets have been tightly integrated in Taiwan and that the wholesale hog market in Taiwan is an efficient market economy. Furthermore, the estimated half-lives from the nonlinear generalized impulse response analysis are as short as four months.[[note]]SC
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
Further evidence on property-casualty insurance premiums: Do multiple breaks and country characteristics matter?
No full text[[abstract]]This paper employs a panel data stationarity test that incorporates multiple structural breaks to investigate whether property-casualty insurance (PCI) premiums per capita among 40 countries are mean-reverting or not. The results suggest that our panel dataset is stationary after we introduce the structural breaks into the model and consider cross-sectional dependence. However, the results for the panel stationarity test vary with regard to different country characteristics. Countries in which the PCI premiums present a panel unit-root property infer that any external shocks can have a permanent effect on the insurance premiums. Accordingly, the associated insurance authorities should take possible structural breaks and cross-sectional dependence into account when implementing related policies. (C) 2012 Elsevier BM. All rights reserved.[[note]]SSC
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
The nexus between defense expenditure and economic growth: New global evidence
No full text[[abstract]]This paper applies a two-step Generalized Method of Moments (GMM) to re-examine the causality between defense burden (MB) and real GDP (RY) for 137 countries. The findings indicate that a short-run causality running from MB to RY is found in lower-middle- and high-income countries and that from RY to MB is found in low-income countries, while bidirectional short-run causality is found in Asia, Europe, Latin America & the Caribbean and the Middle East & North Africa. No causality is found in upper-middle-income, European & Central Asian and Sub-Saharan African countries. Thus, our results do not support that one size fits all. This paper contributes important implications to the countries for making their defense policy. (C) 2013 Elsevier B.V. All rights reserved.[[note]]SSC
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