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分析一个文件夹及其子文件夹下所有的html文档，并查找文档中加载的png图片文件，通过urlwrite函数下载并保存png类型的图片文件到硬盘上。 此matlab代码用到了网络连接，下载，并且通过多线程技术，增加了下载的速度。 可以通过这个方法，下载网页中的内容，可以说想怎么下，就怎么下。(Analysis all the files of type html in a folder, find the documents that load png image file.Then download and save the png file to harddisk through urlwrite function .)

用matlab编写的TVD格式一维激波管问题，包含黎曼问题精确解，Hll格式和Roe格式，采用minmod，vanleer等多种限制器(TVD scheme using matlab one-dimensional shock tube problems, including Riemann problem exact solution, Hll formats and Roe format using minmod, vanleer other limiters)

该算法是多层递阶预报算法，可以实现时间序列的有效预测！(The algorithm is a multi-recursive prediction algorithm can be implemented effectively predict time series!)

说明：  关于SAR回波仿真的模拟和RD成像算法。(Simulation of SAR echo simulation and RD imaging algorithm.)

随机信号的一些基本MATLAB程序，对初学者很有帮助(random signals in the MATLAB some of the basic procedures, helpful for beginners)

很少见的六角阵波束形成的相关仿真及其相关的各种图形(Rare hexagonal array beamformed related simulation and its associated various graphics)

维特比译码，采用软件的方法实现维特比译码，仿真效果很好。(Viterbi decoding using the software Viterbi decoding, the simulation results is very good.)

sources of matlab for finite element method

Good paper for a research about the field of medical.

it is about npc inverter