2

编写K-均值聚类算法程序，对下图所示数据进行聚类分析(选k=2)(prepare K-means clustering algorithm, the data shown in the chart below cluster analysis (EAC k = 2))

The commands to control window movement are typically communicated over a controller area network (CAN). In this model, the switches that may be located in the center console of the vehicle and that produce the commands are included

试设计一个切比雪夫I型高通数字滤波器，采样率为8000Hz,fp=1000Hz,fs=700Hz,Rp=3dB,Rs=20dB。(Try to design a type I Chebyshev high-pass digital filter sampling rate of 8000Hz, fp = 1000Hz, fs = 700Hz, Rp = 3dB, Rs = 20dB.)

说明：  关于Matlab的数字仿真及应用，用于信号分析等 (On the Matlab simulation and the number of applications for signal analysis, etc.)

电力电子电路 但相半波可控整流电路simulink仿真(Power electronic circuit but phase half wave controllable rectifier circuit simulation of Simulink)

基于ofdm信道估计的matlab源代码(Based on ofdm channel estimation matlab code)

说明：  三次样条插值，三弯矩法计算，曲线拟合，求插值点的函数值，一阶导数，二阶导数(Cubic spline interpolation, three-moment method, curve fitting, interpolation points demand function values, first-order derivative, second derivative)

通过输入时间和磁矩分量，通过一维傅里叶变换求出磁谱，主要用于OOMMF软件计算结构的后期处理。(By entering the time and the magnetic moment component, obtained by one-dimensional Fourier transform magnetic spectrum, mainly used in the the OOMMF software calculated structure post-processing.)

SkewT分布是近年来得到广泛使用的一种参数化分布。区别于传统的正太分布、学生-t分布，SkewT分布除了具有厚伟特征之外，还引入了偏斜特征。该分布对于金融领域的研究与应用具有十分重要的价值。当然，也是一个重要的统计工具。SkewT分布由Bruce E. Hansen(1994)构造，本源码包括SkewT分布的密度函数、累计概率、随机数生成、理论矩。(SkewT distribution has been widely used recently. Different from traditional Normality and Student-t distribution, SkewT parameterizes both tail-thickness and skewness. SkewT is valuable to financial applications and studies, and other statistic tool. SkewT is firstly introduced by Bruce E. Hansen(1994). This package includes M files on the density of SkewT, CDF, random number generator and theoretical moments of SkewT.)

一个直升机齿轮信号的模拟分析，通过应用小波分析，对信号进行分解，得到时频图(A helicopter gear signal simulation analysis, through the application of wavelet analysis, signal decomposition, time-frequency diagram obtained)