This study discussed the contradiction and reform experience of multi-plan integration in Sihui from the perspective of spatial governance.The research found:in terms of contradictions,the right and responsibility of ...This study discussed the contradiction and reform experience of multi-plan integration in Sihui from the perspective of spatial governance.The research found:in terms of contradictions,the right and responsibility of management departments in the county area of Sihui were crosscutting,the township governance responsibilities needed urgent improvement,the urban-rural governance problems were different,the spatial governance elements were not unified,and the contradiction in the implementation mechanism was the implementation of projects.Through the multi-plan integration reform,Sihui reconstructed the right and responsibility relationship of the spatial governance departments,unified the elements of spatial governance,and refactored the implementation mechanism by reconstructing the transmission mechanism of the spatial planning system and the project approval mechanism and establishing the dynamic evaluation and adjustment mechanism.展开更多
针对大规模、不规则的多色服装裁剪分床计划(multi-color cut order planning,MCOP)问题,提出了基于深度强化学习和多目标粒子群的复合优化算法.首先,以生产误差和生产成本为优化目标,结合设备数量、铺布层数等约束条件,建立了MCOP多目...针对大规模、不规则的多色服装裁剪分床计划(multi-color cut order planning,MCOP)问题,提出了基于深度强化学习和多目标粒子群的复合优化算法.首先,以生产误差和生产成本为优化目标,结合设备数量、铺布层数等约束条件,建立了MCOP多目标优化模型.其次,设计了基于双延迟深度确定性策略梯度(twin delayed deep deterministic policy gradient,TD3)的裁剪分床全局优化求解策略,构建了TD3算法的马尔可夫决策过程,并设计了基于误差和成本的奖励函数求解得到全局解.再者,提出了基于线性解耦的多目标粒子群裁剪分床局部优化算法,设计线性规划解耦策略实现尺码组合矩阵与铺布层数矩阵的快速解耦计算,有效提高求解精度和速度;同时,通过精英档案策略得到MCOP问题的Pareto最优解.最后,通过实际案例和算法对比实验验证了所提方法的可行性和优越性,可为服装企业提供良好的参考价值.展开更多
One of the hot issues to realize the multi-planning system integration is to explore the inter-planning coordination mechanism breaking current technical and system restrictions. The essence of planning disintegration...One of the hot issues to realize the multi-planning system integration is to explore the inter-planning coordination mechanism breaking current technical and system restrictions. The essence of planning disintegration is the disconnection of their objective system, indicator system, and spatial coordinate system. Few studies have been conducted on this issue. This paper analyzes the manifestations and causes of the "three-system dissociation," and proposes to establish a new objective system. In addition, it proposes to strengthen the connection design, aiming to explore effective ways to realize inter-planning connection and coordination.展开更多
The nonuniform sampling method in hologram plane is proposed to reconstruct objects on multi-plane simultaneously. The hologram is nonuniformly sampled by decomposing it into several parts with various sampling rates....The nonuniform sampling method in hologram plane is proposed to reconstruct objects on multi-plane simultaneously. The hologram is nonuniformly sampled by decomposing it into several parts with various sampling rates. The hologram is calculated based on the nonuniform fast Fourier transform （NUFFT） algorithm. In the experiment, we load this nonuniformly sampled hologram on phases-only spatial light modulator （SLM）, and by illumination with collimated light objects with different sampling rates are reconstructed at different distant planes simultaneously. Both of the numerically simulation and optical experiments are performed to demonstrate the feasibility of our method. The experiment also shows that our proposed nonuniform sampled hologram for multi-plane objects is calculated by only one step, better than conventional method that needs several steps of calculation proportional to the numbers of object planes.展开更多
基金Sponsored by Natural Science Fund of Guangdong Province(2015A030310521)
文摘This study discussed the contradiction and reform experience of multi-plan integration in Sihui from the perspective of spatial governance.The research found:in terms of contradictions,the right and responsibility of management departments in the county area of Sihui were crosscutting,the township governance responsibilities needed urgent improvement,the urban-rural governance problems were different,the spatial governance elements were not unified,and the contradiction in the implementation mechanism was the implementation of projects.Through the multi-plan integration reform,Sihui reconstructed the right and responsibility relationship of the spatial governance departments,unified the elements of spatial governance,and refactored the implementation mechanism by reconstructing the transmission mechanism of the spatial planning system and the project approval mechanism and establishing the dynamic evaluation and adjustment mechanism.
文摘针对大规模、不规则的多色服装裁剪分床计划(multi-color cut order planning,MCOP)问题,提出了基于深度强化学习和多目标粒子群的复合优化算法.首先,以生产误差和生产成本为优化目标,结合设备数量、铺布层数等约束条件,建立了MCOP多目标优化模型.其次,设计了基于双延迟深度确定性策略梯度(twin delayed deep deterministic policy gradient,TD3)的裁剪分床全局优化求解策略,构建了TD3算法的马尔可夫决策过程,并设计了基于误差和成本的奖励函数求解得到全局解.再者,提出了基于线性解耦的多目标粒子群裁剪分床局部优化算法,设计线性规划解耦策略实现尺码组合矩阵与铺布层数矩阵的快速解耦计算,有效提高求解精度和速度;同时,通过精英档案策略得到MCOP问题的Pareto最优解.最后,通过实际案例和算法对比实验验证了所提方法的可行性和优越性,可为服装企业提供良好的参考价值.
文摘One of the hot issues to realize the multi-planning system integration is to explore the inter-planning coordination mechanism breaking current technical and system restrictions. The essence of planning disintegration is the disconnection of their objective system, indicator system, and spatial coordinate system. Few studies have been conducted on this issue. This paper analyzes the manifestations and causes of the "three-system dissociation," and proposes to establish a new objective system. In addition, it proposes to strengthen the connection design, aiming to explore effective ways to realize inter-planning connection and coordination.
基金supported by the National"973"Program of China(Nos.2013CB328803 and 2013CB328804)the National"863"Program of China (Nos.2012AA03A302 and 2013AA013904)the Aeronautical Science Foundation of China(No.20125169021)
文摘The nonuniform sampling method in hologram plane is proposed to reconstruct objects on multi-plane simultaneously. The hologram is nonuniformly sampled by decomposing it into several parts with various sampling rates. The hologram is calculated based on the nonuniform fast Fourier transform （NUFFT） algorithm. In the experiment, we load this nonuniformly sampled hologram on phases-only spatial light modulator （SLM）, and by illumination with collimated light objects with different sampling rates are reconstructed at different distant planes simultaneously. Both of the numerically simulation and optical experiments are performed to demonstrate the feasibility of our method. The experiment also shows that our proposed nonuniform sampled hologram for multi-plane objects is calculated by only one step, better than conventional method that needs several steps of calculation proportional to the numbers of object planes.
