摘要
应用混沌、分形理论,从相空间重构出发,通过计算关联维数和Lyapunov指数来研究犬的颈动脉、头臂干、腹主动脉各处血流量时间序列的混沌现象。结果表明,犬动脉血流量信号的确具有混沌特性,且体外反搏使犬动脉血流系统更加复杂,各处的混沌性有所加强。
A study to the chaotic phenomena of blood flow in dog＇s arteries was presented with reconstructing phase space, estimating Lyapunov exponents and calculating correlation dimension of the chaos theory. It was found that there is chaotic phenomenon in this kind of signals, and its chaos degree was augmented and the system of blood flow in dog＇s arteries was more complex due to external counterpulsation.
出处
《微计算机信息》
北大核心
2007年第22期280-281,277,共3页
Control & Automation
基金
国家自然科学基金(30127001)
