BreakXAxis

串的一些基本运算，删除一段子串，置换，求s串中从start位置开始长度为len的子串等等(Some of the basic string operations, delete a substring, replacement, seeking s string starting from the start position of the sub-string of length len, etc.)

In the 80′s most companies did not improve their service level because of the Economy Model in exercise and because of financial reasons. In this brief paper i try to demonstrate this statement.

FIR滤波器的设计代码，这是最后一部分，所有的都已上传(FIR filter design code, which is the last part, all have been uploaded)

预测函数控制MATLAB程序 阶跃 正弦 随机输入信号下的情况(Predictive functional control procedures step MATLAB random sinusoidal input signal under the circumstances)

对数据进行EMD分析时，如果数据不是纯的白噪声,则分析过程中一些尺度将会丢失,出现模态混叠现象。EEMD通过附加均匀分布 在整个时频空间的白噪声，可有效抑制这种现象的发生。(EEMD is insufficient for the EMD method, we propose a noise-assisted data analysis methods. EEMD decomposition principle is: when the additional white noise uniformly distributed throughout the time-frequency space, the time-frequency space is carved up by the filter component of the composition at different scales.-)

Duda《模式分类》第二版第1、3、5章部分课后习题和上机题的解答和程序代码(Duda pattern classification, the second edition of the first chapter 1,3,5 some after-school exercises and answers questions on the machine and program code)

logistics分岔图和其迭代过程中的迭代值的分布图(To draw the logistics iterative process map, can see the visual and iterative convergence.)

从曲线中检测到其峰值：先利用二次求导得到所有凸点，设置门限，去除过低的凸点，然后利用滑动窗的方法，在凸点中求得满足峰值要求的点(Detected from the curve to its peak: the first use of the second derivative method to get all the bumps, set the threshold too low to remove the bumps, and then use a sliding window, obtained in a bump to meet peak requirements of point)

说明：  关于LFM信号的匹配滤波器，程序和文献都有。(Matched filter on the LFM signal, procedures and documentation have.)

This file contains the e-book "The introductions to pattern recognition"