In this paper, the methods of literature, experiment and mathematical statistics are used to study.350 students of grade two in primary school affiliated to the National People's Congress and grade two students in...In this paper, the methods of literature, experiment and mathematical statistics are used to study.350 students of grade two in primary school affiliated to the National People's Congress and grade two students in Primary School of brother school were taken as experimental group and control group respectively. The students in the experimental group were given zero point physical education for 20 weeks, while the students in the control group were given routine physical education and exercises between classes to analyze the influence and improvement of zero point sports on students' physical quality.After 20 weeks, through the test to reflect the students' strength quality of 1 minute sit ups, reflect the speed quality of the 50 meter run, reflect the flexibility of the quality of sitting body forward flexion.The results show that: the experimental group students before and after the experiment results are significant differences, the control group students before and after the experiment results are not significant difference, the performance improvement is not obvious, the experimental group of students' strength quality, speed quality, flexibility quality has been significantly improved, and the speed quality improvement is very significant, reflecting the students' physical quality of the project performance is significantly better than the right According to the group.展开更多
Accelerating the convergence speed and avoiding the local optimal solution are two main goals of particle swarm optimization（PSO）. The very basic PSO model and some variants of PSO do not consider the enhancement of...Accelerating the convergence speed and avoiding the local optimal solution are two main goals of particle swarm optimization（PSO）. The very basic PSO model and some variants of PSO do not consider the enhancement of the explorative capability of each particle. Thus these methods have a slow convergence speed and may trap into a local optimal solution. To enhance the explorative capability of particles, a scheme called explorative capability enhancement in PSO（ECE-PSO） is proposed by introducing some virtual particles in random directions with random amplitude. The linearly decreasing method related to the maximum iteration and the nonlinearly decreasing method related to the fitness value of the globally best particle are employed to produce virtual particles. The above two methods are thoroughly compared with four representative advanced PSO variants on eight unimodal and multimodal benchmark problems. Experimental results indicate that the convergence speed and solution quality of ECE-PSO outperform the state-of-the-art PSO variants.展开更多
文摘In this paper, the methods of literature, experiment and mathematical statistics are used to study.350 students of grade two in primary school affiliated to the National People's Congress and grade two students in Primary School of brother school were taken as experimental group and control group respectively. The students in the experimental group were given zero point physical education for 20 weeks, while the students in the control group were given routine physical education and exercises between classes to analyze the influence and improvement of zero point sports on students' physical quality.After 20 weeks, through the test to reflect the students' strength quality of 1 minute sit ups, reflect the speed quality of the 50 meter run, reflect the flexibility of the quality of sitting body forward flexion.The results show that: the experimental group students before and after the experiment results are significant differences, the control group students before and after the experiment results are not significant difference, the performance improvement is not obvious, the experimental group of students' strength quality, speed quality, flexibility quality has been significantly improved, and the speed quality improvement is very significant, reflecting the students' physical quality of the project performance is significantly better than the right According to the group.
基金supported by the Aeronautical Science Fund of Shaanxi Province of China(20145596025)
文摘Accelerating the convergence speed and avoiding the local optimal solution are two main goals of particle swarm optimization（PSO）. The very basic PSO model and some variants of PSO do not consider the enhancement of the explorative capability of each particle. Thus these methods have a slow convergence speed and may trap into a local optimal solution. To enhance the explorative capability of particles, a scheme called explorative capability enhancement in PSO（ECE-PSO） is proposed by introducing some virtual particles in random directions with random amplitude. The linearly decreasing method related to the maximum iteration and the nonlinearly decreasing method related to the fitness value of the globally best particle are employed to produce virtual particles. The above two methods are thoroughly compared with four representative advanced PSO variants on eight unimodal and multimodal benchmark problems. Experimental results indicate that the convergence speed and solution quality of ECE-PSO outperform the state-of-the-art PSO variants.
