系统仿真学报 ›› 2021, Vol. 33 ›› Issue (10): 2449-2459.doi: 10.16182/j.issn1004731x.joss.21-0131

• 仿真建模理论与方法 • 上一篇    下一篇

基于元胞自动机的病毒传播和系统仿真模型

张丽娟1,2, 王福昌1,2, 李振刚3   

  1. 1.防灾科技学院,河北 三河 065201;
    2.中国地震局 建筑物破坏机理与防御重点实验室,河北 三河 065201;
    3.中国社会科学院 社会学研究所,北京 100732
  • 收稿日期:2021-02-19 修回日期:2021-05-30 出版日期:2021-10-18 发布日期:2021-10-18
  • 作者简介:张丽娟(1983-),女,硕士,副教授,研究方向为微分方程与动力系统。E-mail:Lijuan262658@126.com
  • 基金资助:
    国家自然科学基金(41674055); 中央高校基本科研专项(ZY20215155); 防灾科技学院教学教研教改项目(JY2021B22); 防灾科技学院高等数学金课建设项目(JK201912); 防灾科技学院大学生创新创业项目(S202111775086)

Virus Propagation and System Simulation Based on Cellular Automata Model

Zhang Lijuan1,2, Wang Fuchang1,2, Li Zhengang3   

  1. 1. Institute of Disaster Prevention, Sanhe 065201, China;
    2. Key Laboratory of Building Collapse Mechanism and Disaster Prevention, Sanhe 065201, China;
    3. Chinese Academy of Social Sciences Institute of Sociology, Beijing 100732, China
  • Received:2021-02-19 Revised:2021-05-30 Online:2021-10-18 Published:2021-10-18

摘要: 根据病毒传播特点及城市空间地图模式,建立了一类易感者,潜伏者,患病者,治愈者,免疫者,病毒传播模型,将环境中的个体看作Agent智能体,根据元胞自动机原理构建病毒传播机制。依据病毒的不同传播特点、不同防控策略对病毒的时空传播进行了仿真,讨论了关键因素对病毒扩散的影响,并以石家庄新冠疫情为例对模型进行了验证。研究结果表明:初始潜伏者人数、感染力、随机游走、疫苗接种比例等因素在病毒传播时空分布中起重要作用。仿真结果显示,在政策比较严格控制的情况下,易感人群10%的疫苗接种比率可初步筑起防疫屏障,较为有效控制疫情传播。模型能比较准确刻画疫情数据随时间的变化规律,也可以展示疫情在真实空间的分布特点,为采取有效防控策略提供决策依据。

关键词: 疫情传播, 智能体, 城市地图, 个体环境交互, 传播动力学

Abstract: A susceptible-latent-infected-cured-immune virus spreading model is established according to the characteristics of epidemic transmission and the actual urban spatial map model. Individuals in the environment are regarded as agents, and the spreading mechanism is established according to the principle of cellular. The effects of different strategies and different characteristics of virus spreading on epidemic have been studied. The role and effect of important factors on epidemic prevention and control method are discussed, and the model is validated taking Shijiazhuang epidemic as an example . The results show that the number of initial latent, the infectivity of disease, vaccination proportion are very important in the spatial and temporal distribution of epidemic transmission. Results show that 10% vaccination rate of susceptible population can build an epidemic prevention barrier and effectively control the spread of the epidemic when the prevention and control measures are relatively strict. The model can accurately describe the change rule of epidemic data over time, and it can clearly describe the spatial distribution characteristics. It is helpful to grasp the temporal and spatial characteristics of virus transmission, providing the basis for more effective and accurate policy implementation.

Key words: epidemic spreading, agent, city map, individual environment interaction, spreading dynamics

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