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数值微分通过matlab实现，对于初学者非常有用。从书上下载的源代码。(Achieved by numerical differentiation matlab, very useful for beginners. Downloaded from the book source code.)

在数值微积分中讨论并比较了没有初等函数解析式情况下的 定积分数值逼近的(Discussed in the numerical integration and compared the analytic situation is not under the primary function of integral numerical approximation of the rectangular method, trapezoidal method, Simpson' s method and Coates law)

SIFT算法（尺度不变特征变换）Matlab 程序代码(SIFT algorithm (Scale Invariant Feature Transform) Matlab code)

非参数化直接法估计双谱，bispecd输出一个向量的双谱，bispecdx输出多个向量的互双谱(The non parametric direct method to estimate bispectrum, bispecd the output a vector bispectrum, bispecdx output multiple vectors Bispectrum)

本算法为粒子群优化算法，适用于初学者，压缩包中附带了一个基本函数用于实践。(This algorithm is a particle swarm optimization algorithm, which is suitable for beginners. A basic function is attached to the compression package for practice.)

Guion de trabajo para mi tesis de master de la universidad

说明：  matpower 学习手册-----------(matpower manual-----------)

直升机模拟仿真,建模，仿真，源代码，有待改进。(Helicopter simulation, modeling, simulation, source code, to be improved.)

DSP.蚁群算法来解决最短路径问题,在电力系统优化问题 (algorithm to solve the shortest path problem, the optimization problems in power system )

Question 1 Question 2 Question 3 3-a) Gaussian filtering with different values ​ ​ ecrats types of noise Gaussian 3-b) Gaussian filtering with different values ​ ​ ecrats types of noise pulse Question 4 4 - a) Median filtering with different window sizes of a noise Gaussian 4-b) median filtering with different window sizes of a noise pulse Question5 5-a) sigma filter applied to a Gaussian noise 5-b) sigma filter applied to an impulse noise 6 - Conclusion