1,721,046 research outputs found
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
Economic Risks of Aflatoxin Contamination in the Production and Marketing of Peanut in Benin
Get PDFAflatoxins are naturally occurring mycotoxins that are produced by species of fungus: Aspergillus flavus and parasiticus. Aflatoxins occur in many agricultural products, in particular peanut (Arachis Hypogea L.). Many developing countries are affected by aflatoxin problem. The focus of this thesis is on farmers and market participants of peanut in Benin. We examine the risk of aflatoxin contamination on producing and marketing peanut in Benin. We, therefore, use enterprise budget and risk analysis to evaluate the effects of aflatoxin contamination on production and marketing of peanut. Data were collected in 2007 through a personal survey in three agro-ecological zones. A total of 90 farmers, 45 traders, 90 processors and 45 stockers were interviewed. Laboratory analyses show that samples collected from processors had high levels of
aflatoxin of up to 980 ppb, followed by the stockers with a maximum level of 610 ppb. Highest level for farmers was 230 ppb while for the traders, it was lower (7.3 ppb); these levels exceed the regulatory limits set by the WHO. Further, results show a decrease in net returns when farmers and market participants sort their products in an attempt to reduce aflatoxin levels. It is more profitable for producers and market participants to sell unsorted peanut immediately after harvest than to sort it before selling. Sorting peanut affects both labor cost and net returns. Unless they sell sorted peanut at a higher price there is no incentive to sort the peanut. In addition, findings indicate that aflatoxin production increases with storage length and this affects product quality and market prices. After 6 months of storage, net revenues from sale of peanut decrease due to lower peanut quality. Unless there is a policy in place for price increases for a better quality and safe product, market participants are likely to engage in cost shifting. Overall, results from enterprise budgets and risk analysis describe drying, sorting, and storage as the most important factors affecting costs and net returns. The results also show that the sorting of peanut may increase market risks of participants. Understanding the economic impacts of aflatoxin contamination may help farmers and market participants to improve product quality in the peanut sector in Benin
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
Seafood Import Demand in the Caribbean Region
Get PDFCointegration analysis and an Error Correction Model are used to estimate aggregate seafood import demand functions for selected Caribbean countries. The results show that seafood import demand is price elastic. Exchange rate has a negative effect on seafood import quantity. Income and tourist arrivals have positive impacts on seafood imports. Seafood import negatively affects domestic fishery production. Tariff and production support policies reduce seafood imports, and enhance domestic production. Both policies increase producer surplus, but a tariff reduces consumer surplus, and a production expansion policy increases consumer surplus. A production expansion subsidy is a more appropriate policy instrument than a tariff for small open economies, like the Caribbean States, to increase domestic production and generate net economic surplus.Seafood, import demand, cointegration, economic surplus, Agricultural and Food Policy, International Relations/Trade, Q17, Q22, C32,
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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