1,721,047 research outputs found
Investment planning and appraisal issues in the privatized railway — the British experience
No full textRail privatization in Britain has led to a division of responsibility for investment between Railtrack (infrastructure) and rolling stock leasing companies and operators (rolling stock). However, public bodies — the Office of Passenger Rail Franchising (OPRAF) and the Office of the Rail Regulator (ORR) — still have a considerable influence. This paper describes the new system and offers a critical analysis of the way it is working, with particular reference to the approach to appraisal put forward by OPRAF in its recent appraisal guide
European Railway Comparisons – Company Profiles
Full text linkThis work was undertaken as part of a project sponsored by the British Railways Board entitled `European Railway Comparisons'. The aims of this project are as follows:
(i)To compare the current efficiency of European railway operators and examine recent trends at both aggregate and disaggregate levels.
(ii)To assess the effects of economies of scale and economies of density on European rail operations.
(iii)To make an exploratory assessment of the potential for further disaggregation by market type (InterCity, Commuter, Freight) in order to make detailed comparisons of market shares.
The main methods employed to carry out this study are as follows:
(i)A review of the literature on railway cost and productivity analysis. Preliminary findings are given in Working Paper 354 and a paper presented to the World Conference on Transport Research (Nash, C.A. and Preston, J.M. (1992) "Assessing the Performance of European Railways").
(ii)Collation of published data for 13 European State Railway Operators.
(iii)Face to face interviews with managers at the 13 State Railway companies in order to check our understanding of published data sources, gain more infomation at a disaggregate level (administered by a self completion questionnaire) and obtain an understanding of the institutional background.
This report summarises some of the background information that was obtained from the interviews undertaken in the summer of 1992. A company profile is developed for each operator under four main headings: Objectives and Management, Finance, the Freight Market and the Passenger Market
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Full text linkWe 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
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
Rail Policy and Performance in Australia.
Full text linkIn 1981, the current author published a review of rail policy and performance in Western Europe (Nash, 1981). A 3 month visit to Australia in the Autumn of 1982 gave the opportunity to extend this comparison to the railways of Australia. Since transport is predominantly a state function in Australia, there are five major publicly-owned rail systems to consider (Table I), each with its own distinct characteristics and each facing a different policy framework. Thus the exercise is much more like a repeat of the European study on a smaller scale than the addition of a single country to the sample
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