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better unstanstanding of dfig model without controllers

SparseArrays map integers to Objects. Unlike a normal array of Objects, there can be gaps in the indices. It is intended to be more efficient than using a HashMap to map Integers to Objects.

读取水平单层介质单炮记录进行p-sv转换波动校正，并输出动校正之后的结果(Reading level single medium shot record the results of p-sv conversion fluctuation correction and output after NMO)

为对细管中的细胞作图像分析，所以就先作了一个管道区域分割的程序，用的的竖直直线和水平直线腐蚀的方法，比较基础和大家分享讨论^_^ 其中autothreshold是一个自动阈值分割的程序 (For the pairs of thin tube of cells for image analysis, so we made a first pipe region segmentation process, using the vertical and horizontal straight line method of corrosion, compare the basis and share the discussion ^ _ ^ One autothreshold is an automatic thresholding procedure )

这是最新的粒子群优化工具箱，可以作为标准子函数来使用。(This is the latest of the particle swarm optimization toolbox, Functions can be used as a standard.)

MATLAB® is a high-level technical computing language and interactive environment for algorithm development, data visualization, data analysis, and numeric computation. Using the MATLAB product, you can solve technical computing problems faster than with traditional programming languages, such as C, C++, and Fortran. You can use MATLAB in a wide range of applications, including signal and image processing, communications, control design, test and measurement, financial modeling and analysis, and computational biology. Add-on toolboxes (collections of special-purpose MATLAB functions, available separately) extend the MATLAB environment to solve particular classes of problems in these application areas. MATLAB provides a number of features for documenting and sharing your work. You can integrate your MATLAB code with other languages and applications, and distribute your MATLAB algorithms and applications.

说明：  MATLAB和QuartusⅡ的FIR滤波器设计与仿真(MATLAB and the Quartus Ⅱ FIR filter design and simulation of)

说明：  近完美重构多相滤波器组实例，包含分析滤波器，综合滤波器，其中原型滤波器系数可调整，以及重构错误的仿真。(Near perfect reconstruction polyphase filter example, contains analysis filters, synthesis filters, which can adjust the prototype filter coefficients, and the reconstruction error is simulated.)

视频：关于Matlab java，C++,C#的混合编程视频教学2(Video: on the Matlab java, C++, C# Mixed programming video teaching 2)

Matlab Codding for Solar PV panel