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一类含分布时滞革新传播模型的稳定性
引用本文:赵宏伟,焉波. 一类含分布时滞革新传播模型的稳定性[J]. 生物数学学报, 2008, 23(1): 107-115
作者姓名:赵宏伟  焉波
作者单位:北华大学,数学学院,吉林,吉林132021
摘    要:建立了一类含分布时滞的革新传播模型dU(t)/dt=-(α+βA(t))U(t)-pU(t)+p,dA(t)/dt=∫+∞ 0 αE(τ)U(t-τ)dτ+βU(t)A(t)-(p+k)A(t)。研究了分布时滞对传播过程的影响,讨论了正平衡点的存在性和唯一性及其局部与全局的渐近稳定性,当分布时滞的核函数取δe^-δτ时,证明了正平衡点是绝对渐近稳定的。

关 键 词:革新传播模型  分布时滞  正平衡点  渐近稳定性
文章编号:1001-9626(2008)01-0107-09
修稿时间:2006-02-20

The Stability of an Innovation Diffusion Model with Delay
ZHAO Hong-wei,YAN Bo. The Stability of an Innovation Diffusion Model with Delay[J]. Journal of Biomathematics, 2008, 23(1): 107-115
Authors:ZHAO Hong-wei  YAN Bo
Affiliation:(Department of Mathematics, Beihua University, Jilin Jilin 132021 China)
Abstract:In this paper, an innovation diffusion model with distributed time delay is proposed and its effect on the diffusion process is studied. The existence and uniqueness of a positive equilibrium is proven and the sufl:icient conditions for its locally and globally asymptotic stability are obtained. When the kernel function of the distributed time delay takes the form δe^-δτ, it is proved that the positive equilibrium is absolutely asymptotically stable.
Keywords:Innovation diffusion model  Distributed time delay  Positive equilibrium  Asymptotic stability
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