保税港区物流网络系统的建模及服务性能  

Modeling and Analysis on Service Performance of Logistics Network System in Free-trade Port Areas

作　　者：金淳[1] 高鹏[1] 韩庆平 

机构地区：[1]大连理工大学系统工程研究所,辽宁大连116024 [2]美国佛罗里达州立大西洋大学计算机科学及工程系,佛罗里达州博卡拉33431

出　　处：《系统工程》2009年第8期14-20,共7页Systems Engineering

基　　金：国家自然科学基金资助项目(70571008);辽宁省自然科学基金资助项目(20062184)

摘　　要：具有海关监管特征的保税港区物流网络系统是一个随机动态服务系统。为分析其服务性能,首先,基于网络图方法描述系统的结构,进而分析了系统的服务流程;其次,建立了系统服务的随机动态排队网络模型,并分析了服务节点间的相互关系;然后,分析了系统的动态服务性能,并提出了车辆的系统逗留时间、服务节点性能、道路资源利用率等性能评估指标及计算方法;最后,通过系统仿真方法对实例系统进行分析并验证模型的有效性。结果表明,该模型可有效评估保税港区物流运作的服务性能,指出其瓶颈因素并给出改善服务性能的措施。The logistics operation network system in free-trade port areas under customs＇ supervision is attributed to a dynamic stochastic service system. In order to analyze the service performance of the logistics process, we first define the structure of system with network graph, and analyze its service process, then, establish the dynamical stochastic queuing network model and discuss the relationship between service nodes and the service performance of different service nodes, according to which the performance evaluation indexes are proposed, including truck staying time in system, operation performance of service nodes and the utilization of road. Finally, an actual example is illustrated and implemented on a simulation model. The results show that this model is effective to evaluate service performance, find the bottlenecks and propose the measures of improving service performance.

关 键 词：物流系统 建模 排队网络 保税港区 服务性能 

分 类 号：N945[自然科学总论—系统科学]