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This function calculates the RND from a cross-section of put prices using the PCA method as described in O. Bondarenko. ``Recovering Risk-Neutral Densities: A New Nonparametric Approach, UIC working paper, September 2000. (This function calculates the RND from a cross-section of put prices using the PCA method as described in O. Bondarenko. ``Recovering Risk-Neutral Densities: A New Nonparametric Approach, UIC working paper, September 2000. )

用七元线形天线阵（ULA） 已知：信号中心波长为2,天线阵元的间距为1米,快拍数为2000，空中有四个 源信号,假设它们的频率：0.015, 0.05, 0.02, 0.035 四个源信号的方向分别为：pi/4 pi/3 pi/6 3pi/4 求： 1）在不加入噪声的情况下,画出传统波束形成法、Bartlett波束 形成法、Capon波束形成法的空间谱图； 2）在加入高斯白噪声的情况下,假设信噪比为10dB，画出传统波束 形成法、Bartlett波束形成法、Capon波束形成法的空间谱图。(7-element linear antenna array (ULA) Known: the signal center wavelength is 2, the antenna element spacing of 1 m, the number of snapshots for 2000, the air there are four Source signal, assuming that their frequency: 0.015, 0.05, 0.02, 0.035 The direction of the four source signals: pi/4 pi/3 pi/6 3pi/4 Requirements: 1) not to join the noise, to draw the traditional beam-forming method, Bartlett, beam Formation method, Capon beamforming method of the space spectrum 2) by adding Gaussian white noise, assuming that the SNR is 10dB, to draw the traditional beam Formation method, Bartlett, beamforming, Capon beamforming method of the space spectrum.)

风力发电PSCAD仿真用得，在正转DQ坐标下，负序变换到正序模块(PSCAD simulation used wind power in the forward DQ coordinates, the negative sequence to positive sequence module transforms)

说明：  Matlab笔记本自带摄像头人脸识别.使用matlab打开笔记本自带的摄像头进行实时人脸识别。修改了matlab示例程序，具有较好的实时性和鲁棒性，能够在光线充足的环境下稳定识别并跟踪。(Matlab notebook comes with camera face recognition. Use matlab to open the camera that comes with the notebook for real-time face recognition. Modified the matlab example program, which has good real-time and robustness, and can be stably identified and tracked in a well-lit environment.)

Fuzzy C Means For Clustering

此MATLAB程序用于自相关函数的估计（包括直接法和FFT法），信号的频率估计（包括MUSIC, ROOTMUSIC，ESPRIT和MVDR）和功率谱的估计（包括LevinsonDurbin迭代法，BT法和周期图法），并附带相应的仿真图以便于对比(MATLAB for correlation estimate :direct and FFT transform frequency estimate of signals:MUSIC, ROOTMUSIC，ESPRIT和MVDR power spectrum estimate : LevinsonDurbin and BT,corresponding figures are accompanied to compare)

一篇很好的介绍11n物理层技术的文章，建议做相关工作的可以看看(ieee_circuits_systems wireless LAN Comes of Age Understanding the IEEE 802.11n Amendment)

MATLAB Signal Processing Toolbox 文档 (MATLAB Signal Processing Toolbox )

人脸识别的最基本的算法PCA，主要是描述了特征值法的基本原理，内容很详细。(Most basic algorithm for PCA Face RecognitionFace recognition algorithm is the most basic PCA, mainly describes the basic principles of characteristic value method, content, very detailed.)

等高线绘制 -以换取下载的基金会-赶紧下载啊啊(Contour drawing- in exchange for the foundations of the download- quickly download ah ah)