一个灰色模型的matlab实现 gray

chebyshev滤波器，更具需要设计高通低通带通chebyshev滤波器(chebyshev滤波器)

说明：  fortran 调用matlab引擎实例(FORTRAN examples Matlab engine)

用于电力电子系统同步信号检测或故障分析的对称分量法正负序分离(Symmetrical components for the power electronics system synchronization signal detection or failure analysis of positive and negative sequence separation)

本书是学习运用SIMULINK仿真信号处理的一本好书，不仅介绍了信号处理的各模块，而且有大量的例程，介绍的非常细致，比帮助文件更加易懂。(This book is the use of SIMULINK simulation to study signal processing a good book, not only introduce the various signal processing modules, but also has a large number of routines, described in great detail, more understandable than the Help file.)

说明：  无线网络中的深度优先搜索算法,实现在无线网络中的节点的搜索(DFC in wireless network)

金融数量分析编程配套源码，各章内容全面，代码完整，不可多得的资料(Quantitative analysis of financial programming supporting source ，Each chapter is comprehensive, code integrity, a rare)

ZEMAX是美国 Radiant Zemax 公司所发展出的光学设计软件，可做光学组件设计与照明系统的照度分析，也可建立反射，折射，绕射等光学模型，并结合优化，公差等分析功能，是套可以运算sequential及Non-Sequential的软件。(ZEMAX is a wonderful too for designing light .)

实验名称:投资组合分析 实验性质：综合性和研究探索性 实验目的：熟练运用投资组合工具箱，学会构造有效前沿组合的方法，掌握最优投资组合的计算方法；给出投资组合VaR 的值。 实验任务：选择股票并从万得下载数据，计算证券的预期收益率、标准差和协方差，设定一组约束条件，构造最优投资组合并计算该组合的Var值。 实验设备：计算机 实验软件：Matlab2013 Wind数据库 选择一组股票作为投资标的，构造投资组合，通过估计收益率均值、计算方差、协方差，计算该投资组合权重、在险价值、画出有效前沿。(Experimental Name: Portfolio Analysis Experimental nature: comprehensiveness and research exploration The purpose of the experiment is to skillfully use the portfolio toolbox, learn to construct effective frontier portfolio method, grasp the best investment portfolio calculation method, and give the value of portfolio VaR. Experimental tasks: select stock and download data from Wan De, calculate the expected return, standard deviation and covariance of securities, set up a set of constraints, construct the optimal portfolio and calculate the Var value of the portfolio. Experimental equipment: computer Experimental software: Matlab2013 Wind database A group of stocks is selected as investment target, and a portfolio is constructed. By estimating the mean value, variance and covariance of the yield, we calculate the portfolio weight, value at risk and draw effective frontier.)

这个资料，集中系统的介绍了MATLAB在通信系统仿真中的应用，分享(This information, focus on the system introduced in the communication system MATLAB simulation, sharing)

说明：  将以下代码加入HEML的<body></body>之间：[第2步的下面位置] <!-- 你可以改变菜单出现的外观风格-->(following code will join the HEML)