Why_use_fftshift

张量的模式展开是一个基本的技术，已有各种代码展开结果不尽相同，本代码是根据张量研究领域权威文献“Tensor Deco们positions and Applications”中的公式编写，并经过多次实例验证，与理论描述相符。文件包括两个m文件，一个是按模n展开，而另一个是逆变换，即按模n叠合。(unfolding of the tensor mode is a basic technology, there are a variety of code to make different result. However this code is written by referring to the authority of the tensor field of research literature Tensor Deco their positions and Applications and after several instances verification, is consistent with the theoretical description. The documents include two m-files, one is unfold.m, and the other is the inverse transformation, that is refold.m.)

说明：  用FDFD模拟光子晶体光纤的色散的程序，主程序为FDFD.m，计算色散的为dispersion.m(FDFD simulation of photonic crystal fibers with a dispersion of the process, the main program for the FDFD.m, calculated dispersion for dispersion.m)

用于公司锁相环程序，已经通过样机验证，需要的朋友请下载(Phase-locked loop procedure used in the company, has been through prototype validation, need friends please download)

上传一个解方程的matlab主程序mw文件，变的不好请谅解(To solve differential equations )

总结了一些常用的matlab源代码，可以用来参考作用，总结得很好。适合查阅。(Summarizes some of the commonly used Matlab source code, can be used to reference, summed it up well. Suitable for inspection)

本代码为Matlab英语字母和数字识别代码，使用autocorrelation算法.代码在Matlab7.0中运行成功,对于字体单一的情况，处理效果较好。(OCR for English & number based on Autocorrelation.)

本程序为汽车理论第五版课后习题程序，采用matlab编程，经测试均为正确结果(The procedures for the car the theoretical fifth edition of the after-school exercise program, using matlab programming, has been tested and are the correct results)

说明：  精通MATLAB优化计算算法，无约束的一维极值算法。共9个程序。(Proficient in MATLAB optimization calculation algorithm, non-binding one-dimensional extremum algorithm. A total of nine procedures.)

this code is solution of optimal control

Automatic Histogram Threshold Using Fuzzy Measures This is the IEEE paper of image processing useful for further research