| Summary: | 碩士 === 國立交通大學 === 經營管理研究所 === 96 === This research applies proposed by Fried at el. (1999) the four-stage DEA to study the energy efficiency of twenty-three administrative regions in Taiwan. The sample period is from 1999 to 2005. The seven inputs are real local government expenditure, employment, solid waste, household electricity consumption, non-household electricity consumption, gasoline sales and diesel sales. The single output is the total real income. All nominal variables are adjusted into real variables by GDP deflators in the base year of 1999. After first-stage analyzing, we use seven environmental variables to explain input slacks, including road length, registered motorcycles, population ratio of graduates and college, the number of NPOs, the number of profit organizations, and the rates of employment in service industries or in manufacturing industries. This efficiency concept avoids environment influence and hence is more accurate. The major findings are as follows: In first-stage, Taichung City and Taipei City have the best energy efficiency. Taitung County, Yunlin County, Chiayi County and Chunghua County have worse energy efficiency. The second-stage uses Tobit regression to explore the effects of environmental variables and input slacks. Road length, registered motorcycles, the employment rate on manufacturing and service industries and the NGO number significantly increase energy input slacks, hence worsening energy efficiency. The Number of profit organizations and population of high educational ratio have significantly negative effects on energy input slacks, hence improving energy efficiency. Taipei County and Taipei City have the best environment-adjusted technical efficiency. Taitung County, Chiayi City, Penhu County Hualien County have the worst environment-adjusted technical efficiency.
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