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DP8579 Industries at the World Technology Frontier: Measuring R&D Efficiency in a Non-Parametric DEA Framework 智库出版物
2011
作者:  Jens Schmidt-Ehmcke;  Petra Zloczysti
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R&d efficiency  Data envelopment analysis  Manufacturing  Patents  Technology frontier  
DP8047 R&D Efficiency and Barriers to Entry: A Two Stage Semi-Parametric DEA Approach 智库出版物
2010
作者:  Jens Schmidt-Ehmcke;  Astrid Cullmann;  Petra Zloczysti
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R&d efficiency  Data envelopment analysis  Truncated regulation  
DP7865 Innovative Activity in Wind and Solar Technology: Empirical Evidence on Knowledge Spillovers Using Patent Data 智库出版物
2010
作者:  Jens Schmidt-Ehmcke;  Petra Zloczysti;  Frauke G Braun
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Technological change  Renewable energy  Patents  Knowledge spillover  Climate change  Innovation