gauss_sidel

说明：  基于dct的数字水印技术，能够应用于版权技术等方面，希望能与大家分享。(Dct-based digital watermarking technology can be applied to other aspects of copyright technology, hoping to share with you.)

线性四面体元的有限元分析可直接利用的函数，包括求刚度矩阵，求体积，求整体刚度矩阵等，有重要的利用价值(Linear tetrahedral element finite element analysis can be directly used for functions, including seeking stiffness matrix, the volume demand, the global stiffness matrix of such demand, there is significant value in use)

Programming communication via serial port c#

AES security algo with image processing

E=input( enter the generator voltage: ) V=input( enter the infinite bus voltage: ) Gx=input( enter the reactance of generator: ) L1x=input( enter the line reactance: ) L2x=input( enter the line reactance: ) L3x=input( enter the line reactance: ) L4x=input( enter the line reactance: ) Pi=input( enter the input power: ) X1=Gx+L1x+((L2x*L3x)/(L2x+L3x))+L4x Pm1=E*V/X1 DO=asin(Pi/Pm1) A=((L2x*L3x)/(2*(L2x+L3x))) C=A B=((L3x/2)^2)/(L2x+L3x) X2=(Gx+L1x+A)+(L4x+A)+(Gx+L1x+A)*(A+L4x)/B Pm2=(E*V)/X2 X3=Gx+L1x+L2x+L4x Pm3=(E*V)/X3 DC=input( enter the fault clearing angle: ) Dm=(3.14-asin(Pi/Pm3)) a1=quad( sin ,DO,DC) A1=(Pi*(DC-DO)-Pm2*a1) a2=quad( sin ,DC,Dm) A2=Pm3*a2-Pi*(Dm-DC) if(A2>=A1) disp( the system is stable ) else disp( the system is unstable ) end Dcc=acos((Pi*(Dm-DO)-Pm2*(cos(DO))+Pm3*(cos(Dm)))/(Pm3-Pm2)) disp( critical clearing angle: ) Dcc

说明：  matlab的学习ppt，浅显易懂，使用方便，编程的时候查阅非常有用。(learning matlab ppt, easy to understand, easy to use, when the inspection program is very useful.)

实现了RS（26,20)译码器，用Matlab实现的，可以纠正3个随机错误(Implements RS (26,20) decoder, implemented using Matlab, random errors can be corrected 3)

matlab主成分分析的几个案例 包括从协方差矩阵或相关系数矩阵出发求解主成分 从样本观测值矩阵出发求解主成分(Principal component analysis matlab several cases, including the covariance matrix or correlation matrix to solve the main ingredient of departure from the starting sample observation matrix solving the main ingredient)

可以实现开机自动在后台运行matlab，为第一次运行matlab节省时间。(Matlab can start automatically in the background, saving time for the first run matlab.)

这厮压缩感知恢复算法中L1同伦优化的算法(Zhesi restore compressed sensing algorithm Homotopy algorithm optimized L1)