ofdm

15名基督教徒和15名异教徒同乘一船航行，途中风浪大作，危机万分，领航者告诉大家，只要将全船的一半人投入海中，其余人就能幸免。大家都同意这个办法，并协定者30人围成一圈；由第一个人起报数，每数至第9人便把他投入海中，下一个接着从1开始报数，第9人又被投入海中，依次循环，直至剩下15人为止。问题是如何排法使投入海中的人全为异教徒？(15 Christians and pagans 15 vessels with one by the way, big waves, extreme crisis, leader told everyone that as long as will be half the person boat into the sea, and the remaining person will be able to escape. We all agree that this approach, and agreements were 30 form a circle from the first reported from a few individuals, the number to 9 for each person put him into the sea, then from the next one to start off, 9 people have been invested in the sea, followed by cycle, until the remaining 15 people so far. The question is how to row Act so that the person into the sea all infidels?)

说明：  二阶系统的最小二乘一次完成算法辨识程序，图形的横坐标是采样时刻i, 纵坐标是输出观测值z, 图形格式为连续曲线(second-order system of least-squares algorithm for a complete identification procedures, graphics abscissa is the sampling time i, longitudinal coordinates of the output value of observation z, graphical format for continuous curve)

说明：  Matlab入门，适合初学者，非常实用！(Matlab Introduction for beginners, very useful!)

说明：  根据Gadner公式编制的密度拟合程序，适合地震解释中没有密度只有速度的情况下自动生成密度(Prepared according to the density of the formula Gadner fitting procedure for seismic interpretation in the case of no density is only under the automatic generation of speed-density)

this file contains a ppt on feature selection for regression problem

从入门要精通PID控制,主要针对的初学PI(From entry to master PID control, mainly for the beginner PI)

RLS算法去除加噪声音乐程序，效果比较好，有图为证。(RLS algorithm to remove noise adding music program, the effect is better, has a license to the graph. )

基于互功率谱的时延估计，esprit算法对有干扰的信号频率进行估计,包括 MUSIC算法，ESPRIT算法 ROOT-MUSIC算法。( Based on the time delay estimation of power spectrum, esprit algorithm signal frequency interference can be assessed Including the MUSIC algorithm, ESPRIT algorithm ROOT-MUSIC algorithm.)

说明：  支持向量机分类，选用肺癌的例子，分类的效果较好。初学者可以根据数据特点自行改动部分参数即可。(Support Vector machine classification, using the example of lung cancer, classification effect is better. Beginners can change some parameters according to the characteristics of the data)

说明：  同态滤波使图像亮度较暗的区域变得可见，而高亮区也变得更加清晰，对比度增强，图像可视化程度增加。(homomorphic filtering )