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981.
Vertical product differentiation and two-sided markets 总被引:1,自引:0,他引:1
We model platform competition in a market where products are characterized by cross network externalities. Consumers differ in their valuation of these externalities. Although the exogenous set-up is entirely symmetric, we show that platform competition induces a vertical differentiation structure that allows for the co-existence of asymmetric platforms in equilibrium. We establish this result in two set-ups: in the first one platforms commit to prices, in the second one they commit to network sizes. 相似文献
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Progress ratios (PRs) derived from historical data in experience curves are used for forecasting development of many technologies as a means to model endogenous technical change in for instance climate–economy models. These forecasts are highly sensitive to uncertainties in the progress ratio. As a progress ratio is determined from fitting data, a coefficient of determination R2 is frequently used to show the quality of the fit and accuracy of PR. Although this is instructive, we recommend using the error σPR in PR, which can be directly determined from fitting the data. In this paper we illustrate this approach for three renewable energy technologies, i.e., wind energy, bio-ethanol, and photovoltaics. 相似文献
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This article was prepared by Dr L. V. Defris and J. S. McDonnell of the Institute research staff. The authors wish to thank Professor R. F. Henderson and Dr P. J. Sheehan for their helpful comments. 相似文献
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Summary The use of general equilibrium models in applied research imposes a discipline in which model structures can easily be compared and contrasted and model results can be interpreted using a well understood and rigorously developed theoretical framework. These features allow researchers to compare results across modeling efforts and to build on the experience of others in deriving results and formulating questions. This paper first presents a brief critical history of applied general equilibrium analysis. It then summarizes the contributions of eight other papers in this issue.We are grateful to Gary Hansen, Ellen McGrattan, and Richard Rogerson for helpful discussions of this paper. We also want to thank the members of the Applied Theory Workshop at the University of Minnesota, who helped referee and edit the papers in this issue: Fernando Alvarez, Raphael Bergoeing, Betsy Caucutt, Ricardo Cavalcanti, Antonia Diaz, Ron Edwards, Andres Erosa, Terry Fitzgerald, Ron Gecan, Doug Gollin, Karine Moe, François Ortalo-Magne, and Marcelo Veracierto. The views expressed herein are those of the authors and not necessarily those of the Federal Reserve Bank of Minneapolis or the Federal Reserve System. 相似文献
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