資料包絡分析法之整合式規模報酬關係—以臺灣道路維護為例

DEA-Based Integrated Relationship of Returns to Scale—An Application to Road Maintenance in Taiwan

李綱(Gang Lee)

指導教授 ： 王隆昌

國立臺北科技大學/工程學院/工程科技研究所/博士(2012年)

https://doi.org/10.6841/NTUT.2012.00394

摘要

為評估各基層道路養護單位之執行績效，進而針對養護單位的規模報酬特性比較分析，並引為組織再造檢討、預算資源分配等公路養護政策之參考。本研究發展出整合式規模報酬關係（Integrated Relationship of Returns to Scale, IRRS）；藉以比較傳統一階段與多階段資料包絡分析（Data Envelopment Analysis, DEA）評估方法在判斷各受評估決策分析單位（Decision Making Units, DMUs）規模報酬特性，以及效率分數的差異。本研究依據兩階段不同之規模報酬關係，發展出不同之二階段整合式規模報酬關係，並歸納出三種形式規模報酬組合。依據本研究所發展之整合式規模報酬關係，以台灣的31個公路總局養護工務段為實證對象，結果顯示傳統一階段之DEA分析方法，在養護工務段規模報酬特性的判斷上與多階段DEA的結果有所差異，歸類為技術效果具遞增規模報酬的有14單位，具遞減規模報酬的有4單位，固定規模報酬的有0單位，無法判定的有13單位。

關鍵字

整合式規模報酬關係 ； 資料包絡分析法 ； 道路維護

並列摘要

The efficiency of highway maintenance by the lowest level of governmental engineering branch is evaluated using an integrated relationship of returns to scale evaluation method developed in this research for comparing the returns to scale characteristics of the basic highway maintenance units. The results can be referenced for reviewing projects, allocating resource, and developing highway maintenance policies. The integrated relationship of returns to scale evaluation method developed in this study for accessing the returns to scale characteristics of decision making units （DMUs） subject to evaluation is based on a two-phase return to scale relationship; A two-stage integrated relationship of returns to scale is developed to induce three forms of returns to scale combinations. The proposed returns to scale relationship have been tested using the case studies on 31 current highway maintenance construction offices of the Directorate General of Highways. The results using the traditional one-stage DEA analysis method to evaluate the returns to scale characteristics are different from those using the multi-stage DEA method. Among the 31 units evaluated, 14 units are categorized as increasing scale of returns for technological effects, 4 has decreasing scale of returns, and no unit has fixed scale of returns; 13 units cannot be determined.

並列關鍵字

Integrated Relationship of Returns to Scale, ； Data Envelopment Analysis ； Road Maintenance.

參考文獻

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