Efficiency and Productivity of Water Utilities in Hyogo Prefecture
Efficiency and Productivity of Water Utilities in Hyogo Prefecture
复制标题
兵库县自来水公司的效率和生产力
DOI：
10.2457/srs.32.3_161
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发表时间：
2001
影响因子：
--
通讯作者：
N. Nakayama
中科院分区：
文献类型：
--
作者：
N. Nakayama
本研究测量了 1992 年至 1998 年兵库县自来水公司的生产力。首先测量了部分生产力。结果表明，劳动生产率提高，而资本生产率急剧下降。资本生产率下降的原因是资本急剧增长，而产出波动。其他生产率一直下降到1994年，并在1994年之后波动。接下来，全要素生产率用Malmquist生产率指数来衡量。为了考虑技术效率变化，本研究采用Fare等人制定的指数。他们将马尔姆奎斯特生产力指数定义为效率变化和技术变化的几何平均值。结果表明，技术效率下降，技术变化减少，TPF变化减少。然后在技术变化不减少的情况下测量Malmquist生产率指数，因为技术变化的减少不适合水务公司的情况。结果表明，由于技术效率的下降和技术变革的增加，TFP变化一直到1994年才下降，并且从1994年到1998年一直波动。
This study measures the productivity of water utilities in Hyogo Prefecture during 1992 to 1998. At first, partial productivities are measured. The results show that labor productivity increases, while capital productivity decreases dramatically. The reason of decreasing of capital productivity is that capital grows up sharply, while output fluctuates. And other productivity decreases until 1994 and fluctuates after 1994.Next, total factor productivity is measured by the Malmquist productivity index. In order to consider technical efficiency change, this study adopts the index developed by Fare et al. They define the Malmquist productivity index as the geometric mean of the efficiency change and the technical change. The results show that technical efficiency decreases and technical change decreases, and TPF change decreases.Then the Malmquist productivity index is measured in the case that technical change does not decrease, because decreasing of technical change is inappropriate for the circumstances of water utilities. The results shows that TFP change decreases until 1994 and it fluctuates from 1994 to 1998 because of decreasing of technical efficiency and increasing of technical change.