China's spatial planning system has a tradition of prioritizing vertical control over horizontal coordination, which leads to conflicts among various plans for one area. This has brought many problems to the spati...China's spatial planning system has a tradition of prioritizing vertical control over horizontal coordination, which leads to conflicts among various plans for one area. This has brought many problems to the spatial management of Chinese cities. Since socio-economic development plan, urban-rural plan, and land use plan are the three major elements of China's spatial planning system, conflicts among them can be taken as an intensified case of the system's problems, and the practice of three-plan integration should focus on bridging the gaps and solving conflicts among them, so as to eventually eliminate predicaments to China's spatial planning. Currently, due to influences of the actual law and governance systems, threeplan integration is largely a sort of government-led planning coordination dedicated to urban-rural spatial development. In the context of China's constantly deepened political and economic system reforms, three-plan integration, together with the extended multi-plan integration, will surely play an important role in the construction and exploration of China's spatial planning system.展开更多
为更好地完成大面积区域的全覆盖扫描,提出一种多车多无人机协同区域搜索模式。构建考虑卡车行驶路程限制与无人机总量限制的多车多无人机协同区域搜索模型,设计一种融合退火机制、禁忌策略与自适应大邻域搜索的三阶段优化算法(a three ...为更好地完成大面积区域的全覆盖扫描,提出一种多车多无人机协同区域搜索模式。构建考虑卡车行驶路程限制与无人机总量限制的多车多无人机协同区域搜索模型,设计一种融合退火机制、禁忌策略与自适应大邻域搜索的三阶段优化算法(a three stage optimization algorithm integrating annealing mechanism,tabu strategy,and adaptive large neighborhood search,ALNSAWPT),通过区域划分、车辆路径规划、无人机路径规划来求解该问题。在第一阶段,设计基于网格的区域划分方法将大面积区域划分为多个搜索任务。在第二阶段,将搜索任务分配给卡车并生成卡车的路径规划方案。由此,原问题简化为多组单车多无人机协同区域搜索问题。在第三阶段,为每个卡车上的无人机分派搜索任务并生成搜索路径规划方案。实验结果表明,ALNSAWPT明显优于其他5种对比算法,且多车多无人机协同区域搜索模式的效率明显优于单车多无人机区域搜索模式,证明了所提算法的有效性。展开更多
文摘China's spatial planning system has a tradition of prioritizing vertical control over horizontal coordination, which leads to conflicts among various plans for one area. This has brought many problems to the spatial management of Chinese cities. Since socio-economic development plan, urban-rural plan, and land use plan are the three major elements of China's spatial planning system, conflicts among them can be taken as an intensified case of the system's problems, and the practice of three-plan integration should focus on bridging the gaps and solving conflicts among them, so as to eventually eliminate predicaments to China's spatial planning. Currently, due to influences of the actual law and governance systems, threeplan integration is largely a sort of government-led planning coordination dedicated to urban-rural spatial development. In the context of China's constantly deepened political and economic system reforms, three-plan integration, together with the extended multi-plan integration, will surely play an important role in the construction and exploration of China's spatial planning system.
