In: Energy Economics, 2008, vol. 30, no. 2, p. 503-516
This paper uses a choice experiment to evaluate the consumers' willingness to pay for energy-saving measures in Switzerland's residential buildings. These measures include air renewal (ventilation) systems and insulation of windows and facades. Two groups of respondents consisting respectively of 163 apartment tenants and 142 house owners were asked to choose between their housing status quo...
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This paper studies a number of stochastic cost frontier models comparing their ability to distinguish unobserved heterogeneity from inefficiency variation among firms. The main focus is on the panel data models that incorporate firm-specific effects in a stochastic frontier framework, as proposed by Greene (2002, 2004). In cases where the unobserved heterogeneity is correlated with some of the...
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We analyze the technical efficiency of German and Swiss urban public transport companies by means of SFA. In transport networks we might face different network structures or complexities, not observed, but influencing the production process. The unobserved factors are typically modeled as separable factors. However, we argue that the entire production process is organized around different network...
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In: Journal of transport economics and policy, 2012, vol. 46, no. 1, p. 51-66
Efficiency measurement in public transport requires an adequate account of unobserved network characteristics that are typically modelled as factors separable from the production process. This paper proposes a panel data model that allows for non-separable firm-specific heterogeneity in an input distance function. The proposed model is applied to a sample of German and Swiss urban transit...
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In: Journal of Productivity Analysis, 2008, vol. 30, no. 2, p. 155-168
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In: Journal of Productivity Analysis, 2008, p. -
This paper uses a mixed effects model to examine the temporal variation of cost efficiency in Switzerland’s general hospitals. The variations in total costs, the number of empty beds and the length of hospital stays are analyzed using financial data from a sample of 168 hospitals operating from 1998 to 2003, as well as hospitalization records disaggregated to Diagnosis Related Groups....
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This paper examines the temporal variation of cost efficiency in Switzerland’s general hospitals. The variation of total costs and the number of empty beds has been analyzed using a sample of 168 hospitals operating from 1998 to 2003. In addition more than 100,000 observations form the inpatient data disaggregated to DRG categories have been used to analyze the variations in the length of...
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Adequate and timely application of analgesics after surgical operations is important from both clinical and economic perspectives. Administering pain relief measures requires information about development of post-operative pain and the effect of analgesics. Such information can be obtained from studying patients’ perception of pain in different periods after the operation. This paper applies an...
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In: Review of Industrial Organization, 2004, vol. 25, no. 1, p. 1-19
This paper examines the performance of panel data models in measuring cost efficiency of electricity distribution utilities. Different cost frontier models are applied to a sample of 59 utilities operating in Switzerland from 1988 to 1996. The estimated coefficients and inefficiency scores are compared across different specifications. The results indicate that while the average inefficiency is...
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This paper examines the application of different parametric methods to measure cost efficiency of electricity distribution utilities. The cost frontier model is estimated using four methods: Displaced Ordinary Least Squares, Fixed Effects, Random Effects and Maximum Likelihood Estimation. These methods are applied to a sample of 59 distribution utilities in Switzerland. The data consist of an...
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