混沌

To improve the performance of ABC algorithm, this paper proposed an improved ABC algorithm called self-adapting search space chaos artificial bee colony algorithm.

针对人工蜂群算法的不足，以种群收敛程度为依据，结合混沌优化的思想，提出一种改进的人工蜂群算法－自适应搜索空间的混沌蜂群算法。

The cascade of FIR digital filter and PPSV is used to control chaos and hyperchaos in nonlinear continuous system.

利用数字FIR滤波器和正比于系统变量的脉冲反馈法的级联控制非线性连续系统中的混沌和超混沌。

Over a special range of parameters, the chaotic feature of the system with clearance joint is shown to exist by time domain curve, frequency domain curve or Poincare map and so on. Moreover the kinds of routes to chaos are found as the clearance size or crank speed change.

用多种方法证明了此类机构满足一定条件时存在混沌运动；并以机构运行时间、间隙大小、曲柄转速等作为控制参数，分析了机构周期运动和混沌运动之间的转化路径。

The state adjustors with given stability improve thesynchronization dynamic performance.(2) Adaptive synchronization and variable structure Backstepping synchronizationmethods are proposed for Liu chaotic system with uncertain parameters.

2提出了含不确定参数的Liu混沌系统的自适应同步和变结构Backstepping同步两种方法通过研究Liu混沌系统的单变量驱动和状态观测器两种同步方法，深入分析了Liu系统的结构特点。

This paper studies the characteristics of chaos time sequence attractors, which consist of 3 constant variables, i, e.

基于自相似性与混沌现象的本质联系，本文研究了混沌时间序列吸引子的特性。

Because of chaotic time series internal certain regularity, its reconstructing chaotic attractors space has high precision short-term forecast.

由于混沌时间序列内部确定的规律性，其重构的混沌吸引子的相空间具有高精度短期预测性。

Because of chaotic time series internal certain regularity, its reconstructing chaotic attractors space has high precision short-term forecast.

由于混沌时间序列内部确定的规律性，其重构出混沌吸引子的相空间具有高精度短期预测性。

Firstly,two chaotic maps are suggested and their statistic characteristics are also analyzed.Secondly,to accomplish a controllable visual effect of encrypted image,a visual quality control model is presented,and on the basis of which,a chaotic image encryption scheme is constructed by chaotically adjusting the randomly selected approximate coefficients at the coarsest level in wavelet domain.Then,the security and efficiency of the algorithm are analyzed.

首先给出了两个混沌映射，并分析了其统计特性；为实现基于质量可控的图像加密，构建了加密的视觉质量控制模型；在此基础上，通过对随机选取的最粗级小波近似系数进行深度可控的混沌调节，实现了图像加密；最后，对加密算法进行了有效性分析。

The paper described the basic methods of chaos synchronization and theoretical criterions of it .

本文简述了实现混沌同步的基本方法和判断混沌同步的基本理论。

The character of this new method is that the mechanism of the GA is not changed but the search space and the coefficient of the adjustment of th e optimization parameter are reduced continually, which leads to generation evolution to the next generation in order to produce better optimization indivi duals so as to improve the performance of the GA and get over the disadvantage o f the GA.

提出一种新的混合算法--变尺度混沌遗传算法，该算法把遗传算法和混沌算法混合在一起，在不改变GA搜索机制的同时，根据搜索进程，不断缩小优化变量的搜索空间及调节系数，引导种群进行新一轮进化，从而产生更优的最优个体，改善了GA的性能，有效地克服了GA存在的问题。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。