In chapter one, firstly, we summarize the work that have been done by researchs at hame and abroad about some nonlinear system induced by noise, subsequently, we describe work that we will do.

• 在第一章中,我们叙述了近年来国内外科研人员对噪声诱导的非线性系统中各种现象的研究概况以及我们将要做的工作。