新古典增长模型的稳态路径能否包括资本增进型技术进步?

The celebrated Uzawa(1961) theorem holds that，on the steady-growth path of neoclassical growth model，technological progress must be purely labor-augmenting rather than capital-augmenting，except the special case where the production function takes the form of Cobb-Douglas. With an augmented Ramsey model，however，we prove in this paper that，when investment has adjustment cost which correlates positively with capital-augmenting technology，the steady state growth path can also embrace capital-augmenting technological progress，even if the production function is not Cobb-Douglas. Our conclusions contribute to the study of steady-state condition of neoclassical growth model，and the understanding of the roles of capital and capital-augmenting technology progress in economic growth.