Effect of Time-Delay in the Logistic Growth Model Driven by Weak Signal and White Noise

作     者：周玉荣 

作者机构：School of Information and Electric Engineering Panzhihua University Panzhihua 617000 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2010年第27卷第8期

页      面：31-34页

核心收录：

学科分类：0711[理学-系统科学] 07[理学] 08[工学] 081203[工学-计算机应用技术] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 080402[工学-测试计量技术及仪器] 0805[工学-材料科学与工程（可授工学、理学学位）] 0835[工学-软件工程] 0704[理学-天文学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

主　　题：TIME delay systems FUNCTIONS (Mathematics) MATHEMATICAL models SIGNAL processing WHITE noise theory APPROXIMATION theory SIGNAL-to-noise ratio CORRELATION (Statistics) 

摘      要：Effect of delayed time in the logistic growth model subject to weak periodic signal and correlated multiplicative and additive white noise is investigated. Using small time delay approximation, we obtain the expression of the signal-to-noise ratio （SNR）. It is found that the SNR is non-monotonic functions of the delayed times, the system parameters, the intensities of the multiplicative and additive noise, as well as the correlation strength of the two noises.