Matlab2012-new-course

基于信息熵的改进型遗传算法，并加入了基于群体浓度更新的操作算子。(based on information entropy IAGA, and to join groups based on the concentration updated Operator.)

MATLAB正割法求非线性方程，为一个函数的通用形式(Secant method for solving nonlinear equations MATLAB)

说明：  经典的有限元入门程序之beam，希望对你有用。(Introduction to classical finite element procedures beam, hope useful for you.)

Check Lower eye lids on an eye image

说明：  matlab/simulink仿真，改变光照强度和温度来实现最大功率追踪的功能，可以实现目标，波形良好(Matlab / Simulink simulation, changing the light intensity and temperature to achieve the maximum power tracking function, can achieve the goal, good waveform)

2d fdtd pec with gaussian source

delay and sum beamforming algorithm

电磁场程序设计 ——采用有限差分法计算屏蔽微带传输线的电位及其电容(Electromagnetic field programming- using the finite difference method shielded microstrip transmission line potential and its capacitance)

M=512 原图像长度 N=64 K=8 I=zeros(M,M) J=zeros(N,N) BLOCK=zeros(K,K) 显示原图像 I=imread( f:ceshiyuanshitu.bmp ) figure imshow(I) xlabel( 原始图像 ) 显示水印图像 J=imread( f:ceshilogistic_nuaa64.bmp ) figure imshow(J) xlabel( 水印图像 ) 嵌入水印 tem=1 for p=1:N for q=1:N x=(p-1)*K+1 y=(q-1)*K+1 BLOCK=I(x:x+K-1,y:y+K-1) BLOCK=dct2(BLOCK) if J(p,q)==0 a=-1 else a=1 end BLOCK(2,1)=BLOCK(2,1)*(1+a*0.01) BLOCK=idct2(BLOCK) I(x:x+K-1,y:y+K-1)=BLOCK end end 显示嵌入水印后的图像 figure imshow(I) xlabel( 嵌入水印后的图像 ) imwrite(I, f:ceshiembedded.bmp )

generate simple random fractals recursively