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求从1到20的阶乘，并且可以推广到N阶阶乘，。(Demand from 1 to 20 factorial, and can be extended to N-order factorial,.)

听觉模型的仿真软件，很好用的ear模型，HUTear模型(Auditory model simulation software, the good ear model, HUTear model)

说明：  图像灰度变换、图像的锐化、⑴直方图均衡化（histogram equalization），⑵直方图匹配（histogram matching），⑶邻域平均（neighborhood averaging），⑷局域增强（local enhancement）， ⑸中值滤波（median filtering）。源码(Image gray-scale transformation, image sharpening, ⑴ histogram equalization (histogram equalization), ⑵ histogram matching (histogram matching), ⑶ average neighborhood (neighborhood averaging), ⑷ enhanced local (local enhancement), ⑸ Value filtering (median filtering). Source)

利用MATLAB实现的最小包围矩形算法，精简实用(MATLAB implementation of the minimum bounding rectangle algorithm)

这几个程序可以实现加窗后对信号滤波，包括凯泽窗，汉明窗，矩形窗(This several programs can realize add window to signal after filtering, including the Kaiser window, han Ming window, rectangular window )

这是一个完整的OFDM系统建模，包括主程序OFDM 调制模块，解调模块，调制解调模块中包括BPSK,QPSK,16QAM,64QAM, 主程序包括循环前缀添加，加窗处理，频谱图、PAPR计算，误码率统计等功能。(This is a complete OFDM system modeling, including main program OFDM modulation module, a demodulation module, modulation and demodulation module include BPSK, QPSK, 16QAM, 64QAM, main program includes the cyclic prefix, windowing processing, the spectrum, PAPRcalculate the error rate statistics and other functions.))

最大似然（ML）准则和最大后验概率（MAP）准则，多机电力系统仿真及其潮流计算，采用的是脉冲对消法。( Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion, Multi-machine power system simulation and flow calculation, It uses a pulse of consumer law.)

说明：  power quality improvement using dpfc...

simlink 实现 光伏电池 MPPT局部阴影模型，非常好的仿真模型。(SIMLINK realizes partial shadow model of photovoltaic cell MPPT, very good simulation model.)

YEE+FDTD原代码，非常实用，有参考价值(YEE+ FDTD source code, very useful, have reference value)