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建立一个矩阵，进行一些运算，求得XA=B中X的值(matrix caculation)

主成分分析pca算法matlab程序代码：pca标准化、协方差、特征根特征向量、方差贡献率。。。(Principal component analysis pca algorithm matlab code: pca standardized covariance, eigenvalues ​ ​ eigenvectors, the variance contribution rate. . .)

说明：  读取MIT BI心电数据库文件，使用matlab编程，(MIT BI read ECG database file, use the matlab programming,)

基于元胞自动机模型对于交通事故下的高速公路交通流仿真，在不同大小车比例和交通流条件下，输出交通冲突数，评价道路是否安全。(Whether based on cellular automata model for highway traffic flow simulation in the accidents, the proportion of different sizes of vehicles and traffic flow conditions, the output number of traffic conflict,to evaluate of road safety.)

说明：  一种基于稀疏信号恢复的DOA估计方法，CS采用L1SVD方法进行信号恢复(A DOA estimation method based on sparse signal recovery is proposed. CS uses L1SVD method for signal recovery.)

Plot the periodograms of the random data line codes and to multiply fft output with sampling time to make it similar to the analog counterpart. task 1 and 2 are about quantization

利用相关分析法对系统进行辨识，使用matlab,能够成功辨识出系统传递函数(Correlation analysis method using the system identification, the use of matlab, can successfully identify the system transfer function)

常规声波波动方程正演程序，可动画演示,未做边界处理(acoustic equation wave forward modeling based on convention grid)

this file contains the matlab source code for distinguishable colours. i love you

有限内存BFGS约束优化算法Fortran程序及其说明(Limited memory BFGS Algorithm for Constrained Optimization Fortran program and its description)