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基于灾害链情景下应急资源网络优化的配置策略 被引量:6
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作者 葛敏 陈晓平 吴凤平 《统计与决策》 CSSCI 北大核心 2017年第22期40-44,共5页
基于有限时间、空间和各类应急资源的约束,兼顾公平性和效率性,探索合理、有序和高效的应急资源分配网络优化调度和配置策略,是应急资源管理研究的重要问题。文章基于突发事件灾害链新情景,构建了一个多资源种类、多运输方式、拥有双层... 基于有限时间、空间和各类应急资源的约束,兼顾公平性和效率性,探索合理、有序和高效的应急资源分配网络优化调度和配置策略,是应急资源管理研究的重要问题。文章基于突发事件灾害链新情景,构建了一个多资源种类、多运输方式、拥有双层复杂网络拓扑结构的应急资源分配网络优化调配模型。分别以应急时间最短和运输费用最小为目标建立两个带有序关系的目标函数;其次,提出受灾点应急资源需求急迫度概念,并从应急资源供给和需求等方面建立模型约束条件。最后,提出一种改进多资源分类调度启发式算法进行求解,并通过算例验证了该模型和算法的有效和可行性。 展开更多
关键词 灾害链 多资源 多运输模式 应急资源配置 启发式算法
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Coordinated scheduling model for intermodal transit hubs based on GI/M^K/1 queuing system
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作者 贾洪飞 曹雄赳 杨丽丽 《Journal of Central South University》 SCIE EI CAS CSCD 2015年第8期3247-3256,共10页
Coordinated scheduling of multimode plays a pivotal role in the rapid gathering and dissipating of passengers in transport hubs. Based on the survey data, the whole-day reaching time distribution at transfer points of... Coordinated scheduling of multimode plays a pivotal role in the rapid gathering and dissipating of passengers in transport hubs. Based on the survey data, the whole-day reaching time distribution at transfer points of passengers from the dominant mode to the connecting mode was achieved. A GI/M K/1 bulk service queuing system was constituted by putting the passengers' reaching time distribution as the input and the connecting mode as the service institution. Through queuing theory, the relationship between average queuing length under steady-state and headway of the connecting mode was achieved. By putting the minimum total cost of system as optimization objective, the headway as decision variable, a coordinated scheduling model of multimode in intermodal transit hubs was established. At last, a dynamic scheduling strategy was generated to cope with the unexpected changes of the dominant mode. The instance analysis indicates that this model can significantly reduce passengers' queuing time by approximately 17% with no apparently increase in departure frequency, which provides a useful solution for the coordinated scheduling of different transport modes in hubs. 展开更多
关键词 traffic engineering coordinated scheduling queuing theory intermodal transit hub HEADWAY
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