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电网同步跟踪技术，自己搭的锁相环,可以运行出来。有频率跟踪，还有正负序分离(Grid synchronization tracking technology, take their own phase-locked loop, you can run out. There is frequency tracking, there are positive and negative sequence separation)

说明：  使用LSTM算法，对北京的空气质量进行预测，得到未来的拟合。(LSTM algorithm is used to predict the air quality in Beijing and get the future fitting.)

matlab最优化程序包括 无约束一维极值问题 进退法 黄金分割法 斐波那契法 牛顿法基本牛顿法 全局牛顿法 割线法 抛物线法 三次插值法 可接受搜索法 Goidstein法 Wolfe.Powell法 单纯形搜索法 Powell法 最速下降法 共轭梯度法 牛顿法 修正牛顿法 拟牛顿法 信赖域法 显式最速下降法(matlab optimization program includes one-dimensional extremum problem without constraint advance and retreat method Fafei Bo Fibonacci golden section method the basic Newton method, global Newton method Newton secant parabola method acceptable to the three interpolation methods Wolfe.Powell search method Goidstein simplex method Searching Powell steepest descent method conjugate gradient method modified Newton method Newton Newton trust region method to be explicitly steepest descent method)

无线传感器网络定位技术中可以用卡尔曼滤波来改善定位精度(the Kalman filter can be used to improve the positioning accuracy of location in wireless sensor networks )

This is a code that allow crop an face image proportionally, two point (eyes) and obtains the result.

实现截取最小包含数字的图像，从而获得图像的特征值(acquire the smallest scope of the picture)

三次样条差值方法的说明,包括其推到过程。(Method of cubic spline description of the difference)

对一个小算法应用内点法，算法比较简单，但思路明朗。值得我们学习(Algorithm applied to a small interior-point method, the algorithm is relatively simple, but Siluminglang. We can learn)

D = DISTMAT(X,Y) for matrices X and Y returns the distance matrix where the (i,j)th entry is the d-norm distance between the ith and jth row of X and Y respectively.

仿真程序主体部分由c语言完成,改变运行的设定的参数，在相同的信道编码速率下，通过改变误码率，用Matlab软件进行画图，得出在相同编码速率不同误码率下的纠错后误码的比率，接着改变编码速率，重新可以划出另外的两条曲线；(simulation program from the main part of the completion c language, change the operation of the set parameters, the same channel coding rate, by changing the error rate using Matlab software for drawing, reached the same rate of different coding error rate after correction of the error rate, and then change the coding rate, can be re-drawn the other two curves;)