聆听混沌的声音 　　本世纪70年代初，美国普林斯顿大学的生态学家R·May在研究昆虫群体繁殖规律时提出一个著名的模型： χ[n＋1]=k＊χ[n]＊(1－χ[n])-listen to the voices of the chaotic early 1970s, Princeton University ecologist R May groups in the study of insects breeding laws when a famous model : [n +1] = k * [n] * (1- [n ])