中文摘要：

分析国际快递业在区域内运输网络结构及干、支线的运输方式,并据此构建国际快递区域运输网络基本模式.基于快递业时间阈值的特点以及干线和支线运输的运价折扣因素,建立区域性快递网络优化的混合整数规划模型,设计了基于LINGO的求解算法.算例分析揭示了时间和成本这对快递业的永恒矛盾,有助于量化权衡快递业的广义成本,进而为区域性快递网络优化提供决策支持.

英文摘要：

This paper analyzes the regional transportation network architecture and the mode of transport of link and extension in in- ternational express industry, and accordingly a basic model of re- gional transportation network of international express is built. Then, the paper establishes a mixed integer programming model of regional express network optimization based on the feature of the time threshold in express delivery industry and the freight transport discount factor of link and extension each, and a solver algorithm based on LINGO is designed. The analysis of example reveales the eternal contradiction between time and cost in ex- press delivery industry, which can help to quantify the general- ized cost of express delivery industry, and then provide decision support for regional express network optimization.