Node-admittance-matrix

Fourie Crypt. Encrypt and decrypt programs

拉东正变换与反变换，很好用的可逆变换，可用于面波反演。(Radon transformation and inverse transform, a reversible transformation well used, can be used for surface wave inversion.)

说明：  梯度下降法是一個一階最佳化算法，通常也稱為最速下降法。 要使用梯度下降法找到一個函數的局部極小值，必須向函數上當前點對應梯度（或者是近似梯度）的反方向的規定步長距離點進行疊代搜索。如果相反地向梯度正方向疊代進行搜索，則會接近函數的局部極大值點；這個過程則被稱為梯度上升法。(The gradient descent method is a first-order optimization algorithm, also commonly referred to as the steepest descent method. To find the local minimum of a function using the gradient descent method, an iterative search must be performed to the specified step distance point in the opposite direction of the gradient (or approximate gradient) of the current point on the function. If the search is reversed in the opposite direction to the positive direction of the gradient, it will approach the local maximum point of the function; this process is called the gradient ascent method.)

在matlab环境下在信道下实现bpsk仿真，有调制程序，解调程序，误码率分析等等。(Code to achieve BPSK simulation)

Walsh Hadamard codes algorithm

数值分析篇，拉个朗日插值，三次样条插值法，NEWTON插值等32个程序(Numerical Analysis Section, pull a Long Day interpolation, cubic spline interpolation, NEWTON 32 interpolation program)

吴受章老师的《最优控制理论与应用》一书的MATLAB程序集与图集，很实用(By the teacher, Miss Zhang, " Optimal Control Theory and Applications," a book set and atlas of the MATLAB program is very useful)

基于matlab的模拟调制系统仿真 matlab源程序代码(Based the matlab simulation modulation system simulation matlab source code)

MATLAB R2008接口技术程序设计实例教程源程序(MATLAB R2008 interface programming examples tutorial source code)

潮流计算MATLAB 潮流计算MATLAB 潮流计算MATLAB 潮流计算MATLAB 潮流计算MATLAB(power flow matlab power flow matlab power flow matlab power flow matlab power flow matlab power flow matlab power flow matlab power flow matlab power flow matlab )