KAPPA

用stm32和mq-5传感器测量天然气浓度并可以用串口助手显示出来(Measure the natural gas concentration with the stm32 and mq-5 sensors and display it with the serial assistant)

make design mode win form by c sharp

说明：  这是一个语音识别提取特征参数的例子，提取lpcc和lpc特征参数并且计算了短时能量，这个是用来检测哭声可以使用的lpc-lpcc-short-time-energy(This is an example of speech recognition extraction feature parameters, extracting lpcc and lpc feature parameters and calculating short-term energy, which is used to detect the use of crying sounds.)

地表的fishn额头-surface fishn forehead

说明：  虽然 AdaBoost 算法的检测速度快，误识率低，但是在样本的权重更新过程中，对于分类错误样本中的正、负样本没有加以区分，不利于提高正样本的识别率。本文提出一种新的权重更新方法，对于分类错误的样本，对判断错误的正样本给更高的权重，使得算法在下一轮迭代时，更加关注对分类错误的正样本的学习，从而提高对正样本（人眼）的检测率。采用基于最小二乘法对眼部的外轮廓进行椭圆拟合，根据拟合椭圆的参数来判断眼睛的睁闭状态；采用结合 PERCLOS 和眨眼频率的方法，对疲劳状态进行检测。(Although AdaBoost algorithm has fast detection speed and low false recognition rate, in the process of sample weight updating, there is no distinction between positive and negative samples in classification error samples, which is not conducive to improving the recognition rate of positive samples. In this paper, a new weight updating method is proposed, which gives higher weight to the positive samples of classification errors, so that the algorithm pays more attention to the learning of the positive samples of classification errors in the next iteration, so as to improve the detection rate of the positive samples (human eyes). Based on the least square method, the eye contour is fitted with ellipse, and the opening and closing state of eyes is judged according to the parameters of fitting ellipse; the fatigue state is detected by combining PERCLOS and blinking frequency..)

对于网络安全知识的浅析，对做网络安全方面的同学有帮助。-for network security knowledge of the job of network security is to help the students.

探讨并总结了面试中关于指针与数组名的一个隐含问题，对此进行了延伸拓展。-Explored and summed up the interview on the pointer and array name an implicit problem, which have been extended to expand.

在Matlab实现了对PD雷达算法的仿真，最后达到测速测距效果(In Matlab, the simulation of PD radar algorithm is realized, and the speed ranging effect is achieved.)

i2c eeprom library for avr

DELPHI C/S结构网络在线考试程序，先运行服务端后再启动客户端，若对Delphi比较熟悉，你可以此源码为基础，完整出一个完整的在线考试系统。