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| 1 | Efficiency improvement of ant colony optimization in solving the moderate LTSP显示文摘In solving small- to medium-scale travelling salesman problems(TSPs) of both symmetric and asymmetric types, the traditional ant colony optimization(ACO) algorithm could work well, providing high accuracy and satisfactory efficiency. However,when the scale of the TSP increases, ACO, a heuristic algorithm,is greatly challenged with respect to accuracy and efficiency. A novel pheromone-trail updating strategy that moderately reduces the iteration time required in real optimization problem-solving is proposed. In comparison with the traditional strategy of the ACO in several experiments, the proposed strategy shows advantages in performance. Therefore, this strategy of pheromone-trail updating is proposed as a valuable approach that reduces the time-complexity and increases its efficiency with less iteration time in real optimization applications. Moreover, this strategy is especially applicable in solving the moderate large-scale TSPs based on ACO. | Munan Li | 2015 | Journal of Systems Engineering and Electronics2015，26，6： | 1 |
| 2 | Optimization of core-shell structure distribution in sintered Nd-Fe-B magnets by titanium addition显示文摘In view of the uneven distribution of the core-shell structure of sintered Nd-Fe-B magnets after grain boundary diffusion,this study proposes to use high-melting-point and reactive element titanium(Ti)as an additive to increase the diffusion channels and to enhance the diffusion of heavy rare earth elements along the grain boundary phase.By adding Ti element,the diffusion depth and hence the intrinsic coercivity of magnets are increased significantly.The addition of Ti increases the coercivity at two stages:initially from 16.07 to 16.29 kOe by addition effect,and then from 16.29 to 25.16 kOe by facilitating the diffusion of Tb element.The formation of TiB_(2) phase improves the periodic arrangement of the crystal structure in the surroundings of the grain boundary phase and enhances its activity.The improved grain boundary diffusion and better core-shell structure distribution provide a theoretical guidance fo r solving the problem of diffusion depth in bulk magnets. | Shuwei Zhong Munan Yang Sajjad Ur Rehman Sangen Luo Longgui Li Chao Li Jiajie Li Shuhua Xiong Ihor Bulyk Bin Yang | 2023 | Journal of Rare Earths2023，41，7： | 1 |
| 3 | Caregiving and the stress process: an overview of concepts and their measures显示文摘 | Pearlin LI Munan JT Semple SJ | 1990 | Gerontologist1990，30，5： | 1 |
| 4 | Research on modeling and description of software architecture of cooperation- oriented system 显示文摘 | Li Munan Peng Hong Hu Jin-song | 2006 | Lecture Notes in Artificial Intelli-gence (LNA1)2006，4088，： | 1 |
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