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| Oehmke, James F.; Wolf, Christopher A.; Weatherspoon, Dave D.; Naseem, Anwar; Maredia, Mywish K.; Raper, Kellie Curry; Hightower, Amie L.. |
| Several characteristics of biotech industry structure follow cyclical patterns. Mergers and acquisitions activity shows cyclical behavior, with peaks from 1988-92 and 1996-97 and a valley from 1993-95. The ratio of large-firm to small-firm field trials, and the Herfindahl-Hirshmann concentration index, move pro-cyclically with M&A activity. This paper develops a formal, dynamic, neo-Schumpeterian model of endogenous R&D and innovation. The model generalizes and extends the literature on biotech industry concentration. For specified parameter values, the out-of-steady-state dynamics are examined, and shown to generate model behavior which is consistent with empirical descriptions of biotech concentration and R&D-activity cycles. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Research and Development/Tech Change/Emerging Technologies. |
| Ano: 1999 |
URL: http://purl.umn.edu/11792 |
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| Weatherspoon, Dave D.; Oehmke, James F.; Wolf, Christopher A.; Naseem, Anwar; Maredia, Mywish K.; Hightower, Amie L.. |
| The emergence of agricultural biotechnology and policy responses to is altering global agricultural trade patterns. This paper models the effects of restrictive policies concerning the production and consumption of genetically modified agricultural products. The model relies on a Hecksher-Ohlin-Samuelson framework, adapted to include neo-Schumpeterian research and innovation. The model includes two 'North' countries, the United States (US) and the European Union (EU), and the 'South'. The EU is represented as prohibiting the production and consumption of biotech products, but not restricting biotech research relative to NA. Model results include implications for economic growth, welfare, and trade patterns for the EU, US and S, given the restrictive... |
| Tipo: Working or Discussion Paper |
Palavras-chave: International Relations/Trade; Research and Development/Tech Change/Emerging Technologies. |
| Ano: 1999 |
URL: http://purl.umn.edu/11566 |
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| Oehmke, James F.; Wolf, Christopher A.; Weatherspoon, Dave D.; Naseem, Anwar; Maredia, Mywish K.; Raper, Kellie Curry; Hightower, Amie L.. |
| Over the past fifteen years, the agricultural biotechnology industry has exhibited cyclical behavior in concentration and consolidation. This paper provides a theoretical model of endogenous R&D, in which industry concentration exhibits cyclical behavior. The model also generates additional testable hypotheses, and policy implications. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Industrial Organization; Research and Development/Tech Change/Emerging Technologies. |
| Ano: 1999 |
URL: http://purl.umn.edu/11812 |
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