【摘要】 就患病治愈后有很长免疫期的一般传染病传播过程进行研究,建立了该类疾病传播过程的动态微分方程模型.通过模型求解和数据实验测试,在假设传染强度为10-5并且恢复系数是0.2的条件下,得到结论:人类要战胜相应类别的传染病,应该尽可能把城市生活区规划成不超过2万人口的小区.更多还原

【Abstract】 We discuss the propagating process of epidemic diseases which makes people acquire strong immune abilities to them after recovering. A dynamical difFerentiable equation is built about the propagating process and an approximate part solution is obtained by solving this equation. Under the conditions of both that infectious strength is 10-5 and that convalescent cofficient is 0.2, we obtain the conclusion: Mankind ought to build his towns into small ones in which population is not more than 20 thousands in order to triumph over this kind of infectious diseases.更多还原