Evaluating the effects of price and trade liberalisation on the technical efficiency of agricultural production in a transition economy: The case of Russia
利用1990-1995年俄罗斯75个地区的数据，估计随机生产函数并计算技术效率得分，发现短期效率提升主要源于投入收缩而非技术进步，价格管制和补贴地区效率反而下降。
A stochastic production function is estimated, using data on agricultural output and inputs for 75 Russian regions for 1990-95. Regional technical efficiency scores are calculated as the ratio of actual to potential output. The average efficiency score improved from 0.77 to 0.92 in 1991-93 and then declined to 0.78 by 1995. Losses from technical inefficiency in terms of under-production were cut by more than 20 per cent during 1991-95. Short-run overall improvements in technical efficiency were achieved primarily through contraction of input use relative to output. The role of technological change in improving efficiency was negligible. Additional capital investments in new technologies and management training will probably be needed to achieve further efficiency gains. Investments could be quite profitable, since real returns to capital increased substantially during the reforms. Progress in reducing technical inefficiency was uneven across the regions. Regions that still employ price controls and subsidise production are experiencing increases in technical inefficiency. Copyright 1998 by Oxford University Press.