柔性制造系统在运行中经常受到偶发性事件的影响，因此调度必须适应运行环境的变化。
Flexible manufacture system is influenced by accidental incidents in running, So dispatch must be fit for changing of running environment.
为评估计算网格上并行作业的无中心式调度，设计了基于离散事件的模拟系统J3S。
To evaluate decentralized scheduling of parallel jobs on computational grids, the discrete event-based simulation system J3S is designed.
在分析城市道路网络最短路径算法和地理信息系统（GIS）特点的基础上，提出城市紧急事件发生后，应急调度中最佳路径算法。
Based on the analysis of the shortest path algorithm in urban traffic network and the characteristics of GIS, the algorithm of optimal dispatch path when emergency incident occurs is put forward.
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