...疫病流行 [gap=9297]Key words: the Wei and Jin Dynasties; the Sixteen States; the Northern Dynasty; epidemic disease spreading ...
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The characteristics of epidemic disease were analyzed and a differential equation model for epidemic disease spreading was set.
分析了传染病的传播扩散特点，建立了传染病传播扩散的微分方程模型。
In further details, this paper discussed the epidemic threshold for disease spreading using SIR model with piecewise linear infectivity on scale-free networks.
具体讨论了具有分片线性传染力的SIR模型在无标度网络上的流行病传播阈值，并运用分片线性传染力得到了传播阈值为正的条件。
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