| 초록 |
The aim of this paper is to obtain robust time series estimates of the efficiency of each area to employ DEA/window. A stochastic frontier production function that incorporates a model for technical inefficiency effects is used to investigate the industrial production of livestock industries. Parameters considered in the model for inefficiency effects include size, floating-fixed capital ratios, wages-variable expenses ratios, import liberalization and time. The results indicate that the time tredn of efficiency among regions shows a rising pattern and the gap of efficiency among regions diminishes in hog sector, while the time trend of efficiency among regions is fixed and unchangeable in cattle sector since 1989. The technical efficiency generally increases with size in all sectors when size is defined as breeding number. The relationship between floating-fixed capital ratios and efficiency is positive in hog model and negative in cattle model. The relationship between wages-variable expenses ratios and efficiency is negative in all model. The import liberalization has negative impact on technical efficiency.
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