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FDTD 的吸收边界条件讲解，详细讲解了边界条件的推导过程。(Absorbing boundary conditions for numerical simulation of waves.)

CrossPointNo=53 ％％％输入图中节点的总数目 对已知的边进行赋值，注意：有向图的Cost(i,j)=Cost(j,i)(CrossPointNo = 53%%% imported map nodes to the total number of known side Fu value, attention : to map Cost (i, j) = Cost (j, i))

这是关于PCA主成分分析降维，文件夹里有.mat格式的数据文件，里面数据可供测试PCA降维使用。(This is about PCA principal component analysis dimension reduction, folder. Mat data file format, data available for test use PCA dimensionality reduction.)

这个matlb程序能够实现图像里面的刚兴趣区域的提取和分割(The matlab program to achieve extraction and image segmentation inside the region of interest)

验证运用频域方法进行微分和积分准确性的程序(this is a program about validating caculous)

qpsk调制 信道仿真 采用蒙特卡洛 信号和噪声随机生成，莱斯信道(qpsk modulation and channel simulation using Monte Carlo signal and noise randomly generated, Rice channel)

This Matlab script file explainns the qpsk scheme in awgn channel.

matlab实用例程百例，100个实用的MATLAB例程代码(matlab utility routines 100 cases, 100 practical routines MATLAB code)

Find indexes neighbors

Description: The function is called upon as follows: a = bemd(im1) im1 -> Image a(:,:,1) => IMF 1 a(:,:,2) => IMF 2 a(:,:,3) => IMF 3 a(:,:,4) => Residu