In this paper, the effect of population dispersal and nonlinear incidence rate on the spread of a disease is investigated.
本文主要讨论了种群迁移和非线性发病率对流行病流行情况的影响。
In this paper, we have studied a SIS epidemiological model with a nonlinear incidence rate and population dynamics in susceptible class.
本文研究了具有非线性接触率和易感类中具有种群动力学的SIS传染病模型的正不变集、平衡位置以及平衡位置的稳定性。
Affected by many factors, the epidemic incidence samples are difficult to collect, and always present irregular, chaotic and other nonlinear characteristics.
受多种因素的影响，传染病发病率样本不仅采集困难，而且总是呈现出不规则、混沌等非线性特征。
Weighted harmonic means combination forecasting based on degree of reciprocal grey incidence is a new kind of nonlinear combination forecasting method.
基于倒数灰色关联度的加权调和平均组合预测模型是一种新的非线性组合预测模型。
The system transmission characteristics of the nonlinear optical fibre channel with the incidence of the Gaussian light pulse is studied in this paper.
本文主要研究了存在非线性效应光纤信道中高斯型光脉冲入射下的系统传输特性。
Weighted geometric means combination forecasting based on degree of logarithm grey incidence is a new kind of nonlinear combination forecasting method.
基于倒数灰色关联度的加权调和平均组合预测模型是一种新的非线性组合预测模型。
Objective: To explore the prospect of predicting disease incidence of the predictive model of nonlinear time series by BP neural network.
目的：探讨ANN时间序列预测模型在疾病发病率或死亡率预测上的应用前景。
Objective: To explore the prospect of predicting disease incidence of the predictive model of nonlinear time series by BP neural network.
目的：探讨ANN时间序列预测模型在疾病发病率或死亡率预测上的应用前景。
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