Showing papers by "Liang Liang published in 2018"
TL;DR: This study is the first to combine NSBM with DEA window analysis to give a dynamic evaluation of the environmental efficiency of Chinese regional industrial systems, indicating that the substantial efforts China has devoted to protecting the environment have yielded benefits.
Abstract: In recent years, environmental problems caused by industries in China have drawn increasing attention to both academics and policy makers. This paper assesses the environmental efficiency of Chinese regional industrial systems to come up with some recommendations to policy makers. First, we divided each Chinese regional industrial system into a production process and a pollutant treatment process. Then, we built a scientific input–intermediate–output index system by introducing a new network slacks-based model (NSBM) model. This study is the first to combine NSBM with DEA window analysis to give a dynamic evaluation of the environmental efficiency. This enables us to assess the environmental efficiency of Chinese regional industrial systems considering their internal structure as well as China’s policies concerning resource utilization and environmental protection. Hence, the overall efficiency of each regional industrial system is decomposed into production efficiency and pollutant treatment efficiency. Our empirical results suggest: (1) 66.7% of Chinese regional industrial systems are overall inefficient. 63.3 and of 66.7% Chinese regional industrial systems are inefficient in the production process and the pollutant treatment process, respectively. (2) The efficiency scores for the overall system and both processes are all larger in the eastern area of China than those of the central and western areas. (3) Correlation analysis indicates that SO2 generation intensity (SGI), solid waste generation intensity, COD discharge intensity, and SO2 discharge intensity have significantly negative impacts on the overall efficiency. (4) The overall inefficiency is mainly due to inefficiency of the pollutant treatment process for the majority of regional industrial systems. (5) In general, the overall efficiency was trending up from 2004 to 2010, indicating that the substantial efforts China has devoted to protecting the environment have yielded benefits.
54 citations
TL;DR: The concept of closest target is introduced to determine the attractiveness and progress for each DMU, which can further improve DMUs’ performance with less wastes in inputs or underproduction in outputs.
Abstract: An important branch of data envelopment analysis (DEA) is context-dependent DEA, which evaluates efficiency by combining the attractiveness and progress for a particular decision-making unit (DMU)....
28 citations
TL;DR: This paper establishes a multiple relief materials’ storage model that aims to minimise the expected total cost of the NPO by employing the multi-product newsvendor (MPNV) approach and proposes a flexible storage policy, in which the N PO and the supplier jointly stockpile relief materials.
Abstract: Inventory pre-positioning is critical to quickly and efficiently responding to potential disasters. This paper considers a NPO (a relief agent) that requires stockpiling multiple products for respo...
21 citations
14 citations
TL;DR: A variation of the two-stage SBM model by incorporating a leader–follower structure is proposed and applied to Chinese commercial banks and the results show that the proposed approach can increase efficiencies of inefficient banks and halve the projection distance of some inefficient banks.
Abstract: The two-stage slack-based measure (SBM) model has many applications in the real world. Due to the limitations of the SBM model on which it is based, the two-stage SBM model unfortunately gives unrealistically low efficiencies and rather far projections (Tone in Eur J Oper Res 197(1):243–252, 2010) for inefficient decision-making unit. Based on the novel idea in Tone (2010), this paper proposes a variation of the two-stage SBM model by incorporating a leader–follower structure and applies the proposed approach to Chinese commercial banks. The results show that our proposed approach can increase efficiencies of inefficient banks and halve the projection distance of some inefficient banks.
11 citations