Measuring research benefits in an imperfect market
构建了一个不完全市场模型来评估农业研究收益，发现垄断市场下社会收益和生产者份额均大于竞争市场，若忽视市场不完全性会低估收益。
In this paper, an imperfect market model is developed for evaluating agricultural research benefits.The main finding is that the increases in societal gain, and the producer's share of this gain, are larger with a monopoly than with a competitive market.The paper argues that if the market for an agricultural input or for a commodity is not competitive, then use of a competitive model for assessing research benefits could lead to understatements of both producer and total benefits.