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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Mean-field equations and stable behaviour in an epidemic model of mobile individuals
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Mean-field equations and stable behaviour in an epidemic model of mobile individuals

机译:流动个体流行模型中的均值场方程和稳定行为

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摘要

Epidemic propagation within socially interacting mobile individuals is investigated on a two-dimensional (2D) square lattice. The influence of these parameters (the automata density d, the jumping probability p, etc) on epidemic spreading is studied, and the critical jumping probability pc and the critical population density delta(c) are observed. Moreover, we establish the mean-field (MF) equations which are in good agreement with our network model. Here the efficient contact rate lambda is not a constant but a function of the population density delta, the point is different with conventional MF equations. Through an approximate equivalence relation between network model and MF equations, the concrete form lambda = f (delta) is obtained.
机译:在二维(2D)方格上研究了社交互动的移动个体中的流行病传播。研究了这些参数(自动机密度d,跳跃概率p等)对流行的影响,并观察了临界跳跃概率pc和临界种群密度delta(c)。此外,我们建立了与我们的网络模型非常吻合的平均场(MF)方程。在这里,有效接触率λ不是一个常数,而是人口密度增量的函数,这一点与常规MF方程不同。通过网络模型和MF方程之间的近似等价关系,可以得出具体形式为lambda = f(delta)。

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