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首页> 外文会议>Proceedings of the 2008 spring simulation multiconference >Simulation of Operating Procedures and Infrastructure Changes in the Upper Mississippi Navigation System
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Simulation of Operating Procedures and Infrastructure Changes in the Upper Mississippi Navigation System

机译：密西西比河上空导航系统的操作程序和基础设施变化的仿真

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We use discrete-event simulation to investigate the effects of proposed operational policies and infrastructure changes for a series of locks that create a seasonal bottleneck for commercial barge operations. Traffic scheduling rules derived from a nonlinear integer programming model are tested over highly time-varying traffic mixes and traffic intensities in the shipping season. With the simulation model, we show the impact of alternative priority shifting rules and identify traffic levels at which major infrastructural improvements are required. We identify self-regulating behavior of the system when it is under stress and see how stochastic phenomena mute the benefits of scheduling strategies inferred from deterministic optimizing models. Finally, we compare the benefits derived from infrastructure investments with highly different capital costs. The results are relevant to other transportation or service systems involving series of separated servers with bi-directional traffic flows, several classes of user or customer, random itineraries, and random transit time between servers.
机译：我们使用离散事件模拟来研究提议的操作策略和基础设施更改对一系列锁定的影响，这些锁定会造成商业驳船操作的季节性瓶颈。从非线性整数规划模型得出的交通调度规则将在运输季节的高度时变交通混合和交通强度下进行测试。通过仿真模型，我们可以显示替代性优先级转移规则的影响，并确定需要重大基础设施改进的流量水平。我们确定了系统在压力下的自我调节行为，并观察了随机现象如何使确定性优化模型所推导的调度策略的收益静音。最后，我们将基础设施投资带来的收益与资本成本差异很大进行了比较。结果与其他运输或服务系统有关，这些系统涉及一系列具有双向业务流的分离服务器，几类用户或客户，随机行程以及服务器之间的随机运输时间。

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