数学物理学报(英文版) ›› 2014, Vol. 34 ›› Issue (5): 1551-1570.doi: 10.1016/S0252-9602(14)60103-X

• 论文 • 上一篇    下一篇

PERSISTENCE AND EXTINCTION OF A STOCHASTIC LOGISTIC MODEL WITH DELAYS AND IMPULSIVE PERTURBATION

卢春1,2|丁效华1*   

  1. 1. Department of Mathematics, Harbin Institute of Technology, Weihai 264209, China;
    2. Department of Mathematics, Qingdao Technological University, Qingdao 266520, China
  • 收稿日期:2013-03-11 修回日期:2013-05-20 出版日期:2014-09-20 发布日期:2014-09-20
  • 通讯作者: 丁效华,mathlc@126.com; mathlc@163.com E-mail:mathlc@126.com; mathlc@163.com
  • 基金资助:

    This paper is supported by the National Natural Science Foundation of China (11271101) and the NNSF of Shandong Province (ZR2010AQ021).

PERSISTENCE AND EXTINCTION OF A STOCHASTIC LOGISTIC MODEL WITH DELAYS AND IMPULSIVE PERTURBATION

 LU Chun1,2, DING Xiao-Hua1*   

  1. 1. Department of Mathematics, Harbin Institute of Technology, Weihai 264209, China;
    2. Department of Mathematics, Qingdao Technological University, Qingdao 266520, China
  • Received:2013-03-11 Revised:2013-05-20 Online:2014-09-20 Published:2014-09-20
  • Contact: DING Xiao-Hua,mathlc@126.com; mathlc@163.com E-mail:mathlc@126.com; mathlc@163.com
  • Supported by:

    This paper is supported by the National Natural Science Foundation of China (11271101) and the NNSF of Shandong Province (ZR2010AQ021).

摘要:

A stochastic logistic model with delays and impulsive perturbation is proposed and investigated. Sufficient conditions for extinction are established as well as nonpersistence in the mean, weak persistence and stochastic permanence. The threshold between weak persistence and extinction is obtained. Furthermore, the theoretical analysis results are also
derivated with the help of numerical simulations.

关键词: logistic model, white noise, delay, persistence, impulsive perturbation

Abstract:

A stochastic logistic model with delays and impulsive perturbation is proposed and investigated. Sufficient conditions for extinction are established as well as nonpersistence in the mean, weak persistence and stochastic permanence. The threshold between weak persistence and extinction is obtained. Furthermore, the theoretical analysis results are also
derivated with the help of numerical simulations.

Key words: logistic model, white noise, delay, persistence, impulsive perturbation

中图分类号: 

  • 90B06