afsa

设有离散无记忆信源X,P(X)．二进制费诺编码为：1.将信源符号按概率从大到小的顺序排列2.将信源分成两组――按两组概率之差为最小分．3.上面一组编码为0，下面一组编码为1，一直分到一组只有一个信源为止．4.将一个信源分组得到的0和1全部连接起来，组成该信源的码字，信源即得到自己的费诺编码．(There be no X remembering the message source in case that having being scattered, binary Feinuo of P (X) code is: 1. Will believe that the source sign orders 2 according to probability is minor from arriving at greatly sequence. Will believe that the source divides into two part being allotted 3 according to two set of bad of probability for the minimum. A group of code is 0 above , a group of code is 1 underneath, till dividing till a group only when one believes a source 4. Get up with a 0 and 1 all connection believing that the source is divided into groups and , be composed of the codon owing message a source , believe that the source is to get self Feinuo code Powered )

基于蚁群算法的图像边缘检测，包含四种核函数，下载之后可直接运行(Image edge detection based on ant colony algorithm, including four kernel functions, which can run directly after downloading)

QAM 调制完整代码，MATLAB实现，通俗易懂，适合初学者学习参考。(QAM Modem Demo)

matlab关于鲁棒控制的例子，设计一个Rocket，有源代码，和设计过程详解。是入门的好资料(matlab on the examples of robust control, the design of a Rocket, active code, and explain the design process. Is a good data entry)

MATLAB教案，一些MATLAB的命令。比较全面。(MATLAB)

参考Matlab提供的模块建立简化的三相锁相环的仿真模型，只保留必要的步骤，如abc-dqz只计算Vq，去除频率反馈模块和自动参数调整模块等。 建立单相锁相环的计算模型  简化单相锁相环的系统结构，保留必要的PI控制器等模块  验证并讨论输入信号频率在45-65Hz变化时设计的锁相环的动静态性能  仿真并分析三相输入信号包含谐波、不平衡和直流偏移时锁相环的锁相结果(Reference Matlab provides three-phase PLL module to establish a simplified simulation model, retaining only the necessary steps, such as abc-dqz counting only Vq, remove frequency feedback module and automatic parameter adjustment module.  simulation and analysis of the three-phase input signal contains harmonics, unbalance and DC offset PLL phase-locked Results)

迹线法实现轮轨接触，是轮轨接触力及垂向力的基础内容，需要轮轨接触角及型面数据作为初始 内容(Trace method to achieve the wheel-rail contact, is wheel-rail contact force and the vertical force base, you need a wheel-rail contact angle and surface data as the initial content type)

GEM (graphical environment manager) is a graphic user inteface written for DOS (now public domain)

这是我自己写的knn的算法，实现了聚类，比较简单(This is what I wrote it myself knn algorithm implements clustering, relatively simple)

The objectives of Partial Differential Equation Toolbox™ software are to provide you with tools that: • Define a PDE problem, e.g., define 2-D regions, boundary conditions, and PDE coefficients. • Numerically solve the PDE problem, e.g., generate unstructured meshes, discretize the equations, and produce an approximation to the solution. • Visualize the results.