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Refereed essays Web of Science
In January 2009, the German Federal Network Agency introduced incentive regulation for the electricity distribution sector based on results obtained from econometric and nonparametric benchmarking analysis. One main problem for the regulator in assigning the relative efficiency scores is unobserved firm-specific factors such as network and technological differences. Comparing the efficiency of different ...
In:
Empirical Economics
42 (2012), 1, S. 147-169
| Astrid Cullmann
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Refereed essays Web of Science
In this paper, we provide a comprehensive multivariate cointegration analysis of three parts of the steam coal value chain - export, transport and import prices. The analysis is based on a rich dataset of international coal prices; in particular, we combine data on steam coal prices with freight rates, covering the period December 2001 until August 2009 at weekly frequency. We then test whether the ...
In:
Energy Economics
34 (2012), 1, S. 105-116
| Aleksandar Zaklan, Astrid Cullmann, Anne Neumann, Christian von Hirschhausen
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Refereed essays Web of Science
This paper assesses the relative efficiency of knowledge production in the OECD using a nonparametric DEA approach. In general, resources allocated to R&D are limited and therefore must be used efficiently, given the institutional and legal constraints. The efficiency scores presented are based on an intertemporal frontier estimation for the period 1995 to 2004. We analyse the impact of the regulatory ...
In:
Oxford Economic Papers
64 (2012), 1, S. 176-196
| Astrid Cullmann, Jens Schmidt-Ehmcke, Petra Zloczysti
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Refereed essays Web of Science
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 companies ...
In:
Journal of Transport Economics and Policy
46 (2012), 1, S. 51-66
| Astrid Cullmann, Mehdi Farsi, Massimo Filippini
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Refereed essays Web of Science
Several German states recently introduced tuition fees for university education. We investigate whether these tuition fees influence the mobility of university applicants. Based on administrative data of applicants for medical schools in Germany, we estimate the effect of tuition fees on the probability of applying for a university in the home state. We find a small but significant reaction: The probability ...
In:
Economics of Education Review
31 (2012), 1, S. 155-167
| Nadja Dwenger, Johanna Storck, Katharina Wrohlich
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Refereed essays Web of Science
Means-tested student aid might affect enrollment in higher education. To derive the potential influence of student aid, we use a tax-benefit microsimulation model. The effect is a non-linear function of parental income, with variation as a result of bracket creeping and various reforms. Therefore, the effect of student aid on enrollment can be separated from the effects of income and other family characteristics. ...
In:
The Scandinavian Journal of Economics
114 (2012), 1, S. 124-147
| Viktor Steiner, Katharina Wrohlich
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Refereed essays Web of Science
Photovoltaic (PV) technologies have demonstrated significant price reductions, but large-scale global application of PV requires further technology improvements and cost reductions along the value chain. We survey policies in Germany and China and the industrial actors they can encourage to pursue innovation, including deployment support, investment support for manufacturing plants and R&D support ...
In:
Energy Policy
51 (2012), S. 20-37
| Thilo Grau, Molin Huo, Karsten Neuhoff
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Refereed essays Web of Science
In:
| Olaf Groh-Samberg, Ariane Jossin, Carsten Keller, Ingrid Tucci
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Refereed essays Web of Science
In:
| Monika Jungbauer-Gans, C. Katharina Spieß, Henning Lohmann
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Refereed essays Web of Science
Questions about the future availability of inexpensive coal supplies are rising. In this paper a numerical model is developed to investigate the evolution of the international market for steam coal used for electricity generation. The "COALMOD-World" model is an equilibrium model that computes future trade flows, infrastructure investments and prices until 2030. The model includes the major domestic ...
In:
Fuel
102 (2012), S. 305-325
| Clemens Haftendorn, Franziska Holz, Christian von Hirschhausen