Article: Coastal ports efficiency evaluation and analysis when considering undesirable output Journal: International Journal of Information and Decision Sciences (IJIDS) 2017 Vol.9 No.1 pp.27 - 44 Abstract: With the rapid development of China's economy, port pollution problems become serious in China. Port efficiency evaluations which take undesirable environmental outputs into consideration tend particularly important. Based on this observation, in this paper, we take pollution emissions as undesirable outputs and employ generalised directional distance function (GDDF) to evaluate the technical efficiency (TE) and comprehensive efficiency (CE) for the 21 coastal ports in China. Results show that: 1) for each of the ports, its CE value is higher than its TE value after considering undesirable output in efficiency evaluation during 2008-2012; 2) TE and CE values of the five port groups differ significantly, and 'strong north and weak south' phenomenon appears; 3) efficiency gaps among ports are obvious; 4) in order to achieve higher CE values, the southeast coastal port group, the southwest coastal port group and the pearl river delta port group need to reduce investment greatly. Inderscience Publishers - linking academia, business and industry through research

Title: Coastal ports efficiency evaluation and analysis when considering undesirable output

Authors: Jie Wu; Jing Liu; Dong Guo

Addresses: School of Management, University of Science and Technology of China, Hefei, 230026, Anhui, China ' School of Management, University of Science and Technology of China, Hefei, 230026, Anhui, China ' School of Management, University of Science and Technology of China, Hefei, 230026, Anhui, China

Abstract: With the rapid development of China's economy, port pollution problems become serious in China. Port efficiency evaluations which take undesirable environmental outputs into consideration tend particularly important. Based on this observation, in this paper, we take pollution emissions as undesirable outputs and employ generalised directional distance function (GDDF) to evaluate the technical efficiency (TE) and comprehensive efficiency (CE) for the 21 coastal ports in China. Results show that: 1) for each of the ports, its CE value is higher than its TE value after considering undesirable output in efficiency evaluation during 2008-2012; 2) TE and CE values of the five port groups differ significantly, and 'strong north and weak south' phenomenon appears; 3) efficiency gaps among ports are obvious; 4) in order to achieve higher CE values, the southeast coastal port group, the southwest coastal port group and the pearl river delta port group need to reduce investment greatly.

Keywords: generalised directional distance function; GDDF; data envelopment analysis; DEA; emissions evaluation; undesirable outputs; port efficiency; coastal ports; China; port pollution; port emissions; technical efficiency; comprehensive efficiency; efficiency evaluation; air pollution; environmental pollution.

DOI: 10.1504/IJIDS.2017.082402

International Journal of Information and Decision Sciences, 2017 Vol.9 No.1, pp.27 - 44

Received: 20 Mar 2015
Accepted: 04 May 2015
Published online: 23 Feb 2017 *

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Title: Coastal ports efficiency evaluation and analysis when considering undesirable output

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