期刊
JOURNAL OF THE OPERATIONAL RESEARCH SOCIETY
卷 63, 期 1, 页码 64-71出版社
TAYLOR & FRANCIS LTD
DOI: 10.1057/jors.2011.16
关键词
data envelopment analysis; parallel system; efficiency decomposition; network system
资金
- National Science Council, Republic of China (Taiwan) [NSC98-2410-H-006-006-MY3]
For production systems composed of parallel processes, the system efficiency will more properly represent the aggregate performance of the component processes if the operation of each process is taken into consideration. Several approaches have been proposed for measuring the efficiency of parallel production systems. By requiring the same factor to have the same virtual multiplier, the proposed method is able to calculate the system and process efficiencies at the same time. Moreover, the former can be decomposed into a weighted average of the latter. A system is efficient only if all of its component processes are efficient. Chemistry departments in the UK are used as an example, where teaching and research are two major functions of the department. The relationship between the system and process efficiencies which holds for the case of constant returns to scale can be extended to the case of variable returns to scale. Journal of the Operational Research Society (2012) 63, 64-71. doi: 10.1057/jors.2011.16 Published online 6 April 2011
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