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针对风电场短期风速的预测提出一种基于小波变换的组合预测方法。首先利用Mallat 算法对短期风速时间序列进行db3 小波三层分解与重构，得到短期风速时间序列的近似分量和细节分量。针对近似分量和细节分量的不同特性，对近似分量利用粒子群算法优化的最小二乘支持向量机进行预测，对细节分量利用自回归求和滑动平均模型进行预测。最后各预测模型预测值组合叠加得到最终的短期风速预测值。仿真结果表明该方法具有较高的预测准确度。(In order to improve short-term wind speed prediction accuracy of wind farms，a combined prediction method based on the wavelet transform is proposed. Firstly，the db3 wavelet is used for three-layer decomposition and reconstruction for short-term wind speed time series through Mallat algorithm. The approximation components and the detail components of the short-term wind speed are then obtained. Next，according to the different characteristics of these components，the least square support vector machine optimized by particle swarm algorithm and the autoregressive integrated moving average model are adopted as the predictivemodels for the approximate components and the detail components respectively. Then，the final predictive value of the short-term wind speed is obtained by the combination of the two components. The simulation results indicate that higher accuracy can be obtained in this prediction method.)

说明：  matlab编程学习经典材料！！！！！！！！！！！！！！！！！！(Matlab programming learning classical materials!!!!!!!!!!!!!!!!!!)

matlab程序设计之记忆力测试程序源码matlab programming the memory test program source code(matlab programming the memory test program source code matlab programming the memory test program source code)

数值分析中几个基础的matlab程序，包括选主元的高斯消去，矩阵的LU分解以及Jacobi迭代(Numerical analysis of several matlab-based procedures, including the election of the principal Gaussian elimination, LU decomposition of matrices and Jacobi iteration)

zig-zag顺序扫描，从而达到实现图片压缩量化编码(zig-zag scan order to achieve the realization of image compression quantization coding)

Analize UNRZ, NRZ, Manchester coding.

脉冲激光器输出表达式的仿真实验，可以研究脉冲激光器的脉冲(the matlab of the out put of the pulse laser is used for the studied by the user)

求多项式的值y=ployval(p,x)：计算x点处多项式值 有理多项式 有理多项式求导：[q,r]=polyder(a,b)(matlab DESIGN)

详细的汉明码讲解及编程，本程序只适用传送语音信号等N*1维的矩阵数据，要是想传送灰度或者彩色图片，需要修改一下。(Hamming code in detail to explain and programming, this procedure applies only to transmission of voice signals, such as N* 1-dimensional matrix of data, if would like to send grayscale or color images, the need to make some corrections.)

A SIMPLE BUT USFUL 2D FDTD MATLAB CODE4(USFUL 2D FDTD MATLAB CODE4)