耦合映象格子冻结化随机图样模式的动力学特征

为了描述耦合映象格子的冻化随机图案模式,定义和计算了与格点位置相关的李雅普诺夫指数谱,并和由雅可比矩阵乘积计算的李雅普诺夫做了比较。     

耦合映射系统中的不均匀周期解

用数值方法讨论耦合映射系统中的不均匀周期解,得到一些标度律.由于不均匀周期解敏感地依赖初条件,因此适用统计描述.     

F 模式识别的随机方法

文章根据表达两个模糊集之间相似水平的贴近度的定义，得到了线性和正态型隶属函数时，格贴近度的计算公式，并首次利用随机方法，讨论了用格贴近度对Ｆ模式进行识别。分析表明，文章所讨论的方法具有通用、方便、简捷的特点。     

Aronson映象复杂性的研究

探索Ａｒｏｎｓｏｎ映象周期－混沌－周期运动的复杂特性。数值工作表明，参量ａ＜２．２７也有倍化周期与混沌交替出现，并用Ｌｙａｐｕｎｏｖ指数和功率谱等对混沌运动刻画，讨论了分岔图中的“网”结构。计算出倍化周期分岔的收敛速率，与一维映象的Ｆｅｉｇｅｎｂａｕｍ数作了比较。     

Collective behavior of coupled map lattices with different scales of local coupling

In this paper, I present a numerical study on the collective behavior of one-dimensional coupled map lattices with the nearest coupling to different scales for the whole system. Using the maximum Lyapunov exponent as a tool for subsystem and return mapping, I observed several basic patterns of collective behavior and investigated the contrasts between the different scales. To study the mechanism, the system under entirely random perturbations was investigated using the Monte Carlo method and the contrast with the deterministic approach is given. The results show that the response to a random input is complicated and involves the correlation of different signals and taking into consideration the dynamic properties of the system itself.