dec2bin22

说明：  这是关于非线性单摆的混沌解法后期出现的庞加莱图的matlab程序 (This is a nonlinear pendulum on the latter part of the chaotic solution of the Poincare map matlab program)

FIEMAP data structures and flags.

双圆孔弗朗合肥衍射仿真，MATLAB,远场衍射。(DOUBLE FRAUHOFER )

聚类算法，不是分类算法。分类算法是给一个数据，然后判断这个数据属于已分好的类中的具体哪一类。聚类算法是给一大堆原始数据，然后通过算法将其中具有相似特征的数据聚为一类。这里的k-means聚类，是事先给出原始数据所含的类数，然后将含有相似特征的数据聚为一个类中。所有资料中还是Andrew Ng介绍的明白。首先给出原始数据{x1,x2,...,xn}，这些数据没有被标记的。初始化k个随机数据u1,u2,...,uk。这些xn和uk都是向量。根据下面两个公式迭代就能求出最终所有的u,这些u就是最终所有类的中心位置。(Clustering algorithm, not a classification algorithm. Classification algorithm is to give a figure, and then determine the data belonging to a specific class of good which category. Clustering algorithm is to give a lot of raw data, and then through the algorithm which has similar characteristics data together as a class. Here k-means clustering, is given in advance the number of classes contained in the raw data, then the data contain similar characteristics together as a class. All information presented in or Andrew Ng understand. Firstly, raw data {x1, x2, ..., xn}, the data is not labeled. K random initialization data u1, u2, ..., uk. These are the vectors xn and uk. According to the following two formulas can be obtained final iteration all u, u is the ultimate all these classes the center position.)

说明：  模糊PID和传统PID的matlab实现(Fuzzy PID and conventional PID of the matlab implementation)

matlab潮流程序 matlab潮流程序(power flow software power flow software)

本代码主要用于数字水印技术中的空间域中的最低有效位算法，用于数字产品中的版权保护问题。(This code is mainly used for the least significant bit algorithm for digital watermarking technology in the spatial domain for digital products copyright protection issues.)

很长的一个例子，说实话，我也看不懂。。这个是同学写的。(An example of a very long, I can honestly say I do not watch. . This is the Student Writing.)

OFDM(Orthogonal Frequency Division Multiplexing)即正交频分复用技术，实际上OFDM是MCM Multi-CarrierModulation，多载波调制的一种。其主要思想是：将信道分成若干正交子信道，将高速数据信号转换成并行的低速子数据流，调制到在每个子信道上进行传输。正交信号可以通过在接收端采用相关技术来分开，这样可以减少子信道之间的相互干扰 ICI 。每个子信道上的信号带宽小于信道的相关带宽，因此每个子信道上的可以看成平坦性衰落，从而可以消除符号间干扰。而且由于每个子信道的带宽仅仅是原信道带宽的一小部分，信道均衡变得相对容易。本程序实现OFDM与QPSK技术的比较(This program realization technology and the OFDM QPSK technology)

基于ORL和eigenface的一个人脸识别小程序，导师布置的作业，自己用matlab简单实现了下(Based on ORL and eigenface face recognition of a small program, the mentor assignments, they used a simple realization of the next matlab)