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说明：  说课中常见的三个问题探讨 目前中小学教师说课的问题不少。本文仅就中小学语文教师说课中常见的三个问题提出探讨(Speaking Lesson 3 Common Problems of secondary and primary teachers Speaking Lesson lot of problems. This article far as language teachers in primary and secondary schools common Talking about the class of the three issues)

说明：  《自动控制原理的matlab实现》附录MATLAB工具箱函数(&quot Matlab achieve automatic control theory,&quot Appendix MATLAB toolbox function)

使用matlab实现基于AM解调的广播声音接收，并通过GUI界面实现。(Using matlab based on AM demodulation receiving radio voice, and through the GUI interface implementation.)

OFDM(Orthogonal Frequency Division Multiplexing)即正交频分复用技术，实际上OFDM是MCM Multi-CarrierModulation，多载波调制的一种。其主要思想是：将信道分成若干正交子信道，将高速数据信号转换成并行的低速子数据流，调制到在每个子信道上进行传输。正交信号可以通过在接收端采用相关技术来分开，这样可以减少子信道之间的相互干扰 ICI 。每个子信道上的信号带宽小于信道的相关带宽，因此每个子信道上的可以看成平坦性衰落，从而可以消除符号间干扰。而且由于每个子信道的带宽仅仅是原信道带宽的一小部分，信道均衡变得相对容易。本程序实现OFDM与QPSK技术的比较(This program realization technology and the OFDM QPSK technology)

Usefull Source code

这是根据提交的亚历山大Gramfort的“MATLAB的网状到PDF与三维交互对象“。他的计划将允许网数字转换成3D PDF格式。然而，他的代码只允许一个层进行转换，并不会启用的透明度。 本意见书不创建最终的PDF。它产生的U3D文件，然后可以使用到PDF的Adobe Acrobat Pro文件插入。本文件还允许多层网格，以创建，并为每个层的透明度指定。 此代码包含一个函数（installGoogleArchive.m），它会自动下载并安装所需的中间数据格式转换（IDTF）进入最后的通用3D（U3D）文件的二进制文件。此代码还只包括转换器的Windows版本。(This submission is based on Alexandre Gramfort s "matlab-mesh-to-pdf-with-3d-interactive-object". His program allows meshes to be converted into 3D PDF figures. However, his code only allows a single layer to be converted, and does not enable transparency. The present submission does not create the final PDF. It generates the U3D file which can then be inserted into a PDF file using Adobe Acrobat Pro. This submission also allows multilayer meshes to be created, and for the transparency of each layer to be specified. This code includes a function (installGoogleArchive.m) which will automatically download and install binaries required to convert the intermediate data format (IDTF) file into the final Universal 3D (U3D) file. This code also only includes the windows version of the converter.)

matlab file for image conversion between RGB to YCbCr

this code implements a svm face recognition

正交匹配追踪法实现1-D信号压缩传感，测量数M>=K*log(N/K),K是稀疏度,N信号长度,可以近乎完全重构(Orthogonal Matching Pursuit)

压缩感知：2维压缩感知SL0重构算法，涉及两个测量矩阵，两个方向进行。是本人精心编写调试好的，请放心使用。(cs:2 dimensional compressive sensing using 2D_SL0 reconstruction algorithm, involving two measurement matrices, two directions.)