1,720,962 research outputs found
Consumer price sensitivity in health insurance
Full text linkThis CPB Discussion Paper presents new estimates for the price elasticity of the residual demand for health insurance. This elasticity measures the loss in market share of a health insurer as a consequence of a unilateral increase in price, assuming other firms keep their prices constant. The main findings are as follows: the price elasticity of residual demand for social health insurance by enrollees was very low during the period 1996-2002. We find small but significant effects of the price of basic insurance but no robust effect of the price of supplementary insurance. Young enrollees are more price sensitive than older enrollees. However, these findings are conditional on the limited variation in price observed in our data. At larger price differentials, the elasticity may well be higher. This Discussion Paper is based on joint work of Machiel van Dijk, Marc Pomp, Rudy Douven (all three at CPB), Trea Laske-Aldershof, Erik Schut (both Erasmus University), Willem de Boer and Anne de Boo (Vektis). We would like to thank Marieke Smit (Vektis) for her help in getting this project off the ground. We would also like to thank Katie Carman (Tilburg University) for her comments on a previous draft of this paper.
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
Technological Diffusion Patterns and their Effects on Industrial Dynamics
Full text linkBy focussing on cumulativeness and spillover effects of technological knowledge, theories on technological regimes are predominantly supply side oriented in explaining industrial dynamics. This paper introduces demand side considerations as an additional explanation for industrial dynamics. Given variations in consumer preferences over quality and network sizes of technologies, and different degrees of compatibility between succeeding technologies, we investigate how the resulting differences in the timing and frequency of new technology adoptions effect the industrial dynamics. The simulation results of the model indeed suggest a relationship between different patterns of new technology adoptions and the dynamics of the firm population.tecnological knowledge, demand, consumer preferences, industrial dynamics
Regulation of telecommunication and deployment of broadband
Full text linkThis memorandum explores the question whether regulation in telecommunications encourages or hampers the development of new technologies. Contrary to other network industries, the telecommunications industry is more and more characterized by several, competing networks, such as cable, copper, and wireless. Regulation is, however, still needed as in several components of telecommunications sources of market power remain. The key issue in the regulation of access to a network is dealing with the possible trade-off between static efficiency and dynamic efficiency. Favourable conditions for access to the network contribute to allocative efficiency and productive efficiency, but can negatively affect incentives for investments in upgrading of existing infrastructures and developing new ones. In the Netherlands, regulation of the telecommunication industry is designed to enhance competition between alternative infrastructures without affecting the technology choice of both incumbents and entrants. In the market for unbundled access to the local loop and the market for high quality wholesale access, a trade-off exists between static efficiency and dynamic efficiency. Regulated access tariffs, which are based on average costs, seem to be a good compromise between static and dynamic efficiency. Tariffs for access to the local loop reflect actual costs of the existing copper infrastructure, giving entrants incentives to make efficient make-or-buy decisions. In addition, the threat of infrastructure competition in the local loop, as well as the service-based competition between providers using different infrastructures, i.e. copper and cable, provide incentives for the incumbent to increase efficiency. Our overall conclusion is that Dutch regulation of the telecommunication industry gives efficient incentives for technological developments such as the deployment of broadband. See also: Do market failures hamper the perspectives of broadband?
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