산업경영시스템학회지 (Journal of Korean Society of Industrial and Systems Engineering)

  • 제42권3호
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  • Pages.8-14
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  • 2019
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  • 2005-0461(pISSN)
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  • 2287-7975(eISSN)
한국산업경영시스템학회 (Society of Korea Industrial and System Engineering)
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일관된 지연 효과를 고려한 다기간 DEA 모형

A Multi-Period Input DEA Model with Consistent Time Lag Effects

  • 정병호 (전북대학교 산업정보시스템공학과) ;
  • 장연상 (절강공상대학교 항주대학) ;
  • 이태한 (전북대학교 산업정보시스템공학과)
  • Jeong, Byungho (Dept. of Industrial and Information Systems Engineering, Chonbuk National University) ;
  • Zhang, Yanshuang (Hangzhou College of Commerce, Zhejiang Gongshang University) ;
  • Lee, Taehan (Dept. of Industrial and Information Systems Engineering, Chonbuk National University)
  • 투고 : 2019.05.08
  • 심사 : 2019.08.02
  • 발행 : 2019.09.30
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초록

Most of the data envelopment analysis (DEA) models evaluate the relative efficiency of a decision making unit (DMU) based on the assumption that inputs in a specific period are consumed to produce the output in the same period of time. However, there may be some time lag between the consumption of input resources and the production of outputs. A few models to handle the concept of the time lag effect have been proposed. This paper suggests a new multi-period input DEA model considering the consistent time lag effects. Consistency of time lag effect means that the time delay for the same input factor or output factor are consistent throughout the periods. It is more realistic than the time lag effect for the same output or input factor can vary over the periods. The suggested model is an output-oriented model in order to adopt the consistent time lag effect. We analyze the results of the suggested model and the existing multi period input model with a sample data set from a long-term national research and development program in Korea. We show that the suggested model may have the better discrimination power than existing model while the ranking of DMUs is not different by two nonparametric tests.

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참고문헌

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