仿真

说明：  （1）心电信号预处理 心电信号是一种低频且含有众多噪声干扰的信号。针对心电信号存在的 噪声干扰问题，本文采用了平稳小波变换结合双变量阈值的方法对其进行去 噪处理。通过对心电信号进行八层平稳小波变换，得到不同的小波系数，采 用双变量阈值函数表达式对其进行处理得到新的小波系数，最后进行逆平稳 小波变换实现小波重构，完成心电信号去噪。Matlab 仿真结果显示，本文算 法的准确率较高，信噪比达到 84.5934dB。 （2）心电信号波形识别 反映心电信号的特征部分往往是信号的突变点，因此需要对心电信号的 突变点进行识别检测。本文通过采用二次 B 样条小波对去噪后的心电信号 进行四层平稳小波变换，在第四尺度上对心电信号的 R 波进行波形检测。 在第二尺度上以正确检测 R 波为基础，实现 Q 波和 S 波的波峰、起始点及 终止点检测。为了保证检测精度，本文设置了误检漏检机制。最后在第五尺 度实现了 P 波和 T 波波峰、起始点及终止点检测。仿真结果表明本文的算 法检测精度较高，准确率达到 99.81%。(This paper proposes an efficient method of ECG signal denoising using the adaptive dualthreshold filter (ADTF) and the discrete wavelet transform (DWT). The aim of this method isto bring together the advantages ofthese methods in order to improve the filtering ofthe ECGsignal. The aim of the proposed method is to deal with the EMG noises, the power lineinterferences and the high frequency noises that could perturb the ECG signal. This algorithm is based on three steps of denoising,)

说明：  人工势场的matlab编程；添加简单跳出算法，解决目标不可达等问题；初学者(Matlab'programming of artificial potential field)

基于MSP430F5的液晶显示及RTC程序(Based on the liquid crystal display, and RTC MSP430F5 procedures)

TOPMODEL是分布式水文模型，这里为开发者的程序，以供参考学习。版本为9701(Background to TOPMODEL This program is intended as a demonstration version of TOPMODEL for PC-Windows and has been developed from versions used for teaching purposes over a number of years in the Environmental Science degree course at Lancaster University, including TOPT9502 which is also available at the TOPMODEL Web site (see below) as a DOS program and FORTRAN source code.)

三星S3C2410X ARM芯片手册，其中包括：存储器控制器、 Nand Flash控制器、DMA控制器、LCD控制器、S3C2410 的ADC 和触摸屏接口等几个主要章节。

读取两日期，并算两个日期间的天数。示范日期类型的操作。　(read two dates, and count the period of two days. Model date type of operation.)

使用一个变量实现线性回归，以预测餐馆的利润。 使用梯度下降法，假设 h (x) 由线性模型给出 ，定义代价函数为 。线性回归的目标就是要最小化这个代价函数。(To get started with the exercise, you will need to download the starter code and unzip its contents to the directory where you wish to complete the exercise. If needed, use the cd command in Octave/MATLAB to change to this directory before starting this exercise.)

可用于捷联惯导结算的程序，代入数据就可以运行，有助于对惯导原理的理解(The program that can be used for Strapdown Inertial Navigation settlement can be operated by substituting data, which is helpful to understand the principle of inertial navigation.)

matlab应用实例。如：FIR、IIR数字滤波器设计等。-the example for degining FIR、IIR filter and so on.

翼型气动特性分析程序，可直观显示翼型外形和压力分布(Airfoil aerodynamic analysis program)