用matlab提取pch文件中的刚度矩阵与质量矩阵

说明：  用的是图像处理的知识 非常实用 可以参考学习(Using a very practical knowledge of image processing can refer to learn)

声音的频谱分析 读取文件，分析频谱，画图(Read the file of the sound spectrum analysis, analysis of the spectrum, drawing)

This m file contains the code mass spring system and its constants

回归分析中，检验自变量的重要性，将变量一个一个引入引入变量的条件是其偏回归平方和经检验时显著的，在引入新变量的同时，对已入选的变量逐个检验，将不显著的变量剔除。(The importance of the independent variables of regression analysis, test, introducing variable is introduced one by one into the condition of variable is the partial regression sum of squares in significantly after inspection, and at the same time of introducing new variables, for the selected variables one by one test, will not be significant variables.)

说明：  电力系统模型，用Matlab/Simulink搭建(Power system Simulink model)

几篇关于希尔伯特黄变换的论文，最近在研究这个，和大家分享(On the Hilbert Huang transform several papers, most recently looking at this, and the U.S. share)

matlab7.0入门学习，很有用，适合初学者使用，值得收藏(matlab7.0 entry-learning, useful for beginners, worth collecting)

编程应用粒子群优化算法来优化天线，降低散射场，使天线得到优化(The programming using particle swarm optimization algorithm to optimize the antenna, reducing the scattered field, so that the antenna has been optimized)

我们对离散时间信号进行傅里叶变换和频谱分析。(We do the discrete time signal FFT and spectrum analysis )

matlab与vc联合编程 实现图形的动态显示(matlab and graphics vc joint programming to achieve the dynamic display)