PFM变频

奇异值分解的matlab程序，可以利用此svd程序对一维信号进行除噪运算。(Singular Value Decomposition matlab procedures, SVD can use this procedure in addition to one-dimensional signal-noise computing.)

说明：  一款超炫酷CSS3鼠标悬停动画特效。该特效中，通过CSS圆形渐变来制作圆点(A super cool CSS3 mouse hover animation special effects. In this effect, circle hovering is made by CSS circle gradient.)

this is a guidle for cnc machine

测绘领域，该程序为一个边角网平差的程序，能够进行近似计算、间接平差计算，同时能够绘制出测量的网图，进行精度测评。(The field of surveying and mapping, the program for a corner net adjustment procedures can be approximately calculated, indirect adjustment calculation, at the same time able to draw a network diagram, measurement accuracy evaluation.)

说明：  直接数字式频率合成器DDS设计、Verilog。 产生的信号可以是正弦波或方波、三角波、锯齿波等，自选。 采用DDS技术，将所需生成的波形写入ROM中，按照相位累加原理合成任意波形。 此方案得到的波形稳定，精度高，产生波形频率范围大，容易产生高频。 本实验在设计的模块中，包含以下功能： （1）通过 freq 信号输入需要的频率的值； （2）通过 wave_sel 信号选择所需的波形； （3）通过 amp_adj 信号选择波形放大的倍数。(DDS design of direct digital frequency synthesizer, Verilog. The generated signal can be sinusoidal or square wave, triangular wave, sawtooth wave and so on, optional. By using DDS technology, the required waveforms are written into ROM, and arbitrary waveforms are synthesized according to the principle of phase accumulation. The waveform obtained by this scheme is stable, accurate and easy to generate high frequency waveform. This experiment includes the following functions in the designed module: (1) Input the required frequency value through freq signal; (2) Choosing the required waveform by wave_sel signal; (3) Select the multiplier of waveform amplification by amp_adj signal.)

说明：  icem模型文件，ansys icem网格划分技术实例详解(geometry files,you can use the files to help you learn icem)

说明：  心电波形的QRS检测算法，在心率检测仪中实现过，能过YY1079(QRS detection algorithm of ECG waveform has been implemented in heart rate detector and can meet YY1079.)

该程序基于labview编写而成，可以在Word文档中插入各种曲线图。(The program is based on labview compiled from a variety of graph can be inserted in a Word document.)

说明：  2DPCA是一个图像特征提取的算法。本代码中使用的分类器是最近邻分类器，最后得到的是一个图片识别率与特征矩阵维数的散点图，符合论文《Two-Dimensional PCA: A New Approach to Appearance-BasedFace Representation and Recognition》的预期结果。(2DPCA is an algorithm for image feature extraction. The classifier used in this code is nearest neighbor classifier, and the final result is a scatter diagram of image recognition rate and feature matrix dimensions, which conforms to the expected results of "Two-dimensional PCA: A New Approach to Appearance-BasedFace Representation and Recognition".)

说明：  计算图像各种分割性能指标，最终结果保存在data里，有精确度、精准度、召回率、F1-score等指标。(The final results are stored in data, including accuracy, accuracy, recall rate, F1-score and so on.)