Weak and strong disposability vs. natural and managerial disposability in DEA environmental assessment: Comparison between Japanese electric power industry and manufacturing industries
Weak and strong disposability vs. natural and managerial disposability in DEA environmental assessment: Comparison between Japanese electric power industry and manufacturing industries
复制标题
DOI：
10.1016/j.eneco.2011.10.018
复制
发表时间：
2012-05
期刊：
影响因子：
12.8
通讯作者：
T. Sueyoshi;M. Goto
中科院分区：
文献类型：
--
作者：
T. Sueyoshi;M. Goto
长期以来，在数据包络分析（DEA）环境评价的研究中，“强、弱”的经济概念一直占据主导地位。本研究从概念上和方法上回顾了这两个可丢弃性概念。特别是，本研究对弱可处置性的概念感兴趣，因为该概念被认为具有测量“拥塞”发生的分析能力。在本研究中，生产经济学家所接受的关于一次性的两个经济概念被自然和管理一次性所取代。自然的可丢弃性意味着一种环境策略，通过这种策略，公司试图减少投入向量以减少不希望的产出向量。给定减少的输入向量，企业会尝试尽可能多地增加理想输出向量。这种类型的策略表明消极适应。相比之下，管理的可处置性通过增加投入向量表明了相反的策略。这种可处置性表达了一种环境策略，通过这种策略，公司将监管变化视为新的商业机会。公司试图通过使用新的清洁空气技术和/或新的管理来提高其统一绩效。这一策略表明了积极的适应。考虑到两组可丢弃性，本研究比较了弱/强可丢弃性和自然/管理可丢弃性在概念和方法上的差异，重点关注拥塞和技术创新的概念。此外，本研究运用自然与管理的可弃置性概念，比较日本电力企业与制造企业。研究发现，在自然可弃性条件下，制造业企业表现优于电力企业。在管理的可处置性方面，则发现了相反的结果。实证研究还发现，由于技术创新，两类日本企业都达到了理想的（良好的）拥塞。基于这些实证结果，本研究确定了两个政策含义。其中一个含义是，由于环境管制，日本工业的两个集团已经达到了高水平的技术创新。另一个原因是电力行业在减少二氧化碳排放方面比制造业更有效。
The economic concept of weak and strong disposability has long dominated studies on DEA (Data Envelopment Analysis) environmental assessment. This study reviews the two disposability concepts from their conceptual and methodological implications. In particular, this study is interested in the concept of weak disposability because the concept is believed to have an analytical capability to measure an occurrence of “congestion”. The two economic concepts on disposability, accepted by production economists, are replaced by natural and managerial disposability in this study. The natural disposability implies an environmental strategy by which a firm attempts to decrease an input vector to reduce a vector of undesirable outputs. Given the decreased input vector, a firm attempts to increase a vector of desirable outputs as much as possible. This type of strategy indicates negative adaptation. In contrast, the managerial disposability indicates an opposite strategy by increasing the input vector. This disposability expresses an environmental strategy by which a firm considers a regulation change as a new business opportunity. A firm attempts to improve its unified performance by utilizing new clean air technology and/or new management. The strategy indicates positive adaptation. Considering the two groups of disposability, this study compares between weak/strong disposability and natural/managerial disposability in terms of their conceptual and methodological differences, focusing upon the concept of congestion and technology innovation. Furthermore, using the concept of natural and managerial disposability, this study compares Japanese electric power firms with manufacturing firms. This study finds that the manufacturing firms outperform the electric power firms under natural disposability. An opposite result is found under managerial disposability. This empirical study also finds that the two groups of Japanese firms have attained desirable (good) congestion due to technology innovation. Based upon such empirical results, this study identifies two policy implications. One of the two implications is that the two groups of Japanese industries have attained a high level of technology innovation by a result of environmental regulation. The other is that the electric power industry operates more efficiently to reduce the CO2emission than the manufacturing industries.