disease cycle

Application research on improved cyclical virus evolution genetic algorithm;

一种改进的周期性病毒进化遗传算法应用研究

We present the epidemic model with impulsive vaccination on age interval concerning there is age-dependent severity of infection for some diseases,and get existence of an infection-free periodic solution of the system.

我们研究了模型无病周期解的存在性。

We prove the existence and global stability of the infection-free periodic solution.

建立了具有脉冲预防接种的SIQR传染病模型,利用脉冲微分方程基本理论,对模型的动力学性态进行了分析,给出了模型的基本再生数,证明了无病周期解的存在性及全局稳定性。

Nineteen cases of periodical lunacy were treated with combined Daying Decoction(达营汤) and WM.

采用中药达营汤配合小量抗精神病药治疗周期性精神病 19例 ,并设西药复方炔诺酮治疗 18例为对照组。