海上通道关键节点安全保障效率及应急效率评价研究

Evaluating the Safety Efficiency and Emergency Efficiency of the Key Nodes of Sea-lanes

为了能够全面系统地评价海上通道关键节点的安全保障效率及应急效率,在两阶段DEA模型的基础上,考虑负投入产出变量、决策者对于2种不同效率的偏好差异及效率分解,构建了海上通道关键节点安全保障效率与应急效率评价模型,并将其应用到16个海上通道关键节点的安全保障效率及应急效率评价中.研究结果显示,龙目海峡和霍尔木兹海峡的效率始终是非有效的,且随着α值的增加,曼德海峡、苏伊士运河和望加锡海峡也会转变成非有效单元.除此之外,朝鲜海峡,霍尔木兹海峡和英吉利海峡3个关键节点的子系统效率值波动不明显,安全保障系统占据主体,而马六甲海峡和龙目海峡2个单元的子系统效率值存在部分不规律的变化.

In order to evaluate the safety efficiencies and emergencies efficiency of the key nodes of sealanes, this paper constructs a model which is based on a two-stage DEA considering the negative inputoutput variables, preference difference and decomposition efficiency. The proposed model is used to evaluate the safety efficiencies and emergency efficiencies of 16 key nodes of sea-lanes. The results show that the efficiencies of Lombok Strait and Hormuz Strait are always inefficient. Increase with the value of α, Mandeb Strait, Suez Canal and Makassar Strait will become inefficient DMUs. Analysis found that the efficiency values of subsystems are not fluctuant, and the safety subsystem is dominated. The efficiencies of the Strait of Malacca and Lombok Strait are irregular.