watermaking

This program calculate the conductivity of cylindrical metal nanowire using the phonon approximation in a core-shell structure, in this code, the diameter, and the metal can be changed to simulated other metals. the calculated dispersion relation of the resistivity of a single band is saved as data file. to use the program, run g_E2.m(This program calculate the conductivity of cylindrical metal nanowire using the phonon approximation in a core-shell structure, in this code, the diameter, and the metal can be changed to simulated other metals. The calculated dispersion relation of the resistivity of a single band is saved as data file. to use the program, run g_E2.m)

数值分析里面的高斯消元法利用全主元消去的程序(Numerical analysis method which use the Gaussian elimination procedure all main element elimination)

It s toolbox in determining the crime pattern analysis using SOM (Self-Organizing Maps). It s using SOM clusters and K-means clusters.

光纤光栅反射谱曲线，用以描述光栅反射谱特性(FBG reflection spectrum curve, which describes the grating reflection spectrum)

非线性光学中光纤材料色散随波长变化的曲线仿真 matlab(Nonlinear optical fiber material dispersion versus wavelength curve simulation matlab)

说明：  PM system payment e-voucher automatic.

运用MATLAB语言，对于给定的图片，做DFT,DCT等各种变换，并进行压缩(The use of MATLAB language, for a given picture, do DFT, DCT and other transforms, and compression)

Load Flow of 3-Bus System, (Newton-Raphson)

高斯投影 用于GPS投影到高斯平面，GPS经纬度转换成 米(Gauss projection)

说明：  对简单闭环系统的PID控制参数进行优化，得到最佳的控制效果。使用时将该文件夹设为matlab默认文件夹，用simulink打开.mdl文件，在命令行窗口输入.txt文档中命令，可以得到优化后的P、I和D参数。(The PID control parameters of the simple closed-loop system are optimized to obtain the best control effect. With using these codes, the folder must be set as the default folder of matlab, then open the. MDL file, and input the commands of . TXT document in the command line window. The optimized P, I and D parameters will be obtained.)