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Efficiency evaluation of bus transit firms with and without consideration of environmental air-pollution emissions

机译:有无环境空气污染排放的公交公司的效率评估

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摘要

This study examines the technical efficiency and environmental efficiency of bus transit firms using the slack-based measures (SBM) and non-separable slack-based measures (NSSBM) models with and without considerations of desirable and undesirable outputs. A case study based on data from 12 bus transit firms for the years 2007 to 2011 was conducted. Empirical results show that technical efficiency was affected by environmental pollution constraints from 2007 to 2011. The study has more general theoretical implications for the externalities literature as well. (C) 2016 Elsevier Ltd. All rights reserved.
机译:本研究使用基于松弛的测度(SBM)和基于不可分离的基于松弛的测度(NSSBM)模型,研究了公交运输公司的技术效率和环境效率,并考虑了是否考虑了期望和不期望的产出。基于2007年至2011年12家公交公司的数据进行了案例研究。实证结果表明,从2007年到2011年,技术效率受到环境污染限制的影响。该研究对外部性文献也具有更一般的理论意义。 (C)2016 Elsevier Ltd.保留所有权利。

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