1,720,969 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
A comparison of strategies for working capital management of listed food companies from Northern Europe
Get PDFThe research presents the application of fuzzy logic for synthetic evaluation of strategies for working capital management of twelve food companies from Northern Europe in 2005-2015. A set of financial ratios formed an aggregated indicator reflecting the complexity of relationships between the level and structure of current assets and liabilities of a firm. Based on the proposed indicator, four types of strategies for working capital management were identified and characterized in terms of risk and return preferences. Only a few companies from the sample demonstrated a direct orientation on liquidity or value within their strategies for working capital management. To retain flexibility in short-term financial management, most firms applied moderate policies for current assets and liabilities that helped them in maintaining liquidity and reducing the cost of financing. The integrity of the proposed method for the synthetic evaluation of working capital management makes it a convenient managerial tool suitable for use in firms operating in a turbulent business environment.Peer reviewe
Opportunity Costs of Providing Crop Diversity in Organic and Conventional Farming: Would Targeted Environmental Policies Make Economic Sense?
Get PDFTargeted environmental policies for farmlands may improve the cost-efficiency of conservation
programs if one can identify the farms that produce public goods, or environmental outputs, with
the least cost. We derive shadow values of producing crop diversity on conventional and organic
crop farms to examine their opportunity costs of conservation. Non-parametric distance functions
are estimated by applying data envelopment analysis to a sample of Finnish crop farms for the
period 1994 – 2002. Our results show that there is variation in the shadow values between farms
and the technologies adopted. The extent of cost heterogeneity and farms’ potential for
specialization in the production of environmental outputs determine whether voluntary programs
such as auctions for conservation payments are economically reasonable
Opportunity Costs of Providing Crop Diversity in Organic and Conventional Farming
Get PDFTargeted environmental policies for farmlands may improve the cost-efficiency of conservation
programs if one can identify those farms that produce public goods with the least cost. We derive
shadow values of producing crop diversity for a sample of Finnish conventional and organic crop
farms in the period 1994-2002 in order to examine their opportunity costs of conservation. Our
results of Data Envelopment Analysis show that there is variation in the shadow values between
farms and between the technologies adopted. The degree of cost heterogeneity and farms’ potential
for specialization in the production of environmental outputs determine whether voluntary programs
such as auctions for conservation payments are economically reasonable
Measuring productivity differentials – An application to milk production in Nordic countries
Get PDFThe aim of this paper is to analyse the regional productivity differentials on dairy farms in Denmark, Finland and Sweden. Several methods have been suggested for analysing productivity differentials in agriculture between groups of farms or countries. Hayami [5] and Hayami and Ruttan [7] suggested the meta-production function approach. This idea has been further developed by Lau and Yotopoulos [9] and Fulginity and Perrin [13]. Battese and Rao [2] suggested the meta-frontier analysis for these comparisons. One of the advantages of meta-frontiers with respect to metaproduction functions is that they are able to separate technological differences from the differences in technical efficiency. Battese et al. [5] and O’Donnell et al. [16] have extended this idea and developed both parametric and nonparametric approaches. In this paper, we extend the metafrontier analysis to the concave nonparametric least squares estimation of the production function suggested by Kuosmanen [18,19]. In addition, we compare the results with the approach where the estimation of meta-frontier can be avoided. The reference can also be the maximum output providing technology that is the one that yields the maximum estimated output, given inputs [21]. In this case the estimation can be based either on average or frontier production functions. The farm level data is obtained from the EU’s Farm Accountancy Data Network data set for Denmark, Finland and Sweden. They cover 954 dairy farms in 2003. The results suggest that different method provide slightly different results but in all approaches productivity differentials are considerable in favour of Danish farms. In addition, the Danish technology is not only dominating at the mean but also at most of the data points.productivity, technical efficiency, meta-frontier, Productivity 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
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