chap7

Wigner-Ville Distribuition - WVD

matlab粒子分析算法工具箱，这是最新的希望对有需要的人有用，这个是源代码(matlab particle analysis algorithm toolbox, which is the latest hope useful for people in need, this is the source code)

Implementation moments

使用了plot_hht程序包，其使用了三个终止条件，驻留分量的单调性，极值点与零点的个数相差不超过1，还有黄锷1998经典文献提出的 (matlab hht)

泊松方程的中心差分求解，可以直接画出图。(Central difference solving the Poisson equation, can be directly drawn map.)

说明：  计算多自由度体系振动反应分析时的威尔逊法的实现(Realization of Wilson's Method in the Analysis of Vibration Response of Multi-degree-of-freedom System)

说明：  这是一个用于数值分析的MATLAB程序集合，里面包含了一些常用的数值分析程序。(There are many programs about numerical analysis written in Matlab language.)

frequency expander. Matlab code for expander.When x is a vector, this function adds L-1 after each element of x. When x is a matrix, each column of it treated as vector and expanded L fold. SQUARE-ROOT RAISED-COSINE PULSE: h=sr_cos_p(N,L,alpha) This function generates a square-root raised-cosine pulse of length N+1. There are L samples per symbol period. alpha is the roll-off factor.

C均值模糊聚类，适用于图像分类，此为MATLAB 程序代码。(C mean fuzzy clustering for image classification, this is MATLAB code.)

输入某一点的应力值（6个），可以求出其主应力、主应力方向以及切应力值(Enter a point of stress (6), can find the principal stresses, principal stress direction and the shear stress)