Appropriate technology in a Solovian nonlinear growth model
构建了一个包含凸-凹生产函数和国际技术溢出的索洛增长模型，分析1970年代石油冲击后的生产率放缓如何改变世界收入分配，使低收入国家陷入贫困陷阱。
We propose a Solovian growth model with a convex–concave production function and international technological spillovers. We test the empirical implications of the model, analysing the effects of the productivity slowdown that followed the oil shocks of the 1970s. We argue that this slowdown, altering the world income distribution, affected the pattern of international technological spillovers, taking the poorest countries further away from the technological leaders, and therefore unable to exploit their technologies. The result is the emergence of a poverty trap for low-income countries.