(chp4)

php to my sql used to deal with bot Php and MySql

说明：  电力系统节点导纳矩阵的形成，自己编写的供大家参考，谢谢(Power system nodal admittance matrix of the form, I have written for your reference, thank you)

常用matlab的程序，对于初学者是非常有意义的。(The most commonly used MATLAB program for beginners is very meaningful.)

直流电机MATLAB仿真程序。具有多种控制方式的仿真程序。(DC MATLAB simulation program. A variety of control methods for simulation program.)

matlab源程序，用于计算数值微分，里面有很多的有关数值微分的matlab程序。(matlab source code used to calculate the numerical differentiation, which have a lot of the numerical differentiation of the matlab program.)

机械优化设计中的最速下降法通用函数，步长和初始点给定即可(The function of opt_gard.)

基本克里金算法，用于代理模型的参数计算，解决可靠性计算的通用matlab方法(Basic Kriging algorithm. The model is used to calculate the parameters of the agent model and to solve the general matlab method for reliability calculation)

说明：  拉普拉斯分解(Laplacian decomposition)

LCMV算法的零陷方向图的matlab程序(LCMV pattern nulling algorithm of matlab program)

ofdm signal to noise ratio