facestaginigraphy

有一学生成绩管理数据库如下表，要求建立一SAS数据集score，并输出显示 创建一个新的数据集class，新增平均成绩aver变量和等级考评grade变量，grade的值是根据aver值的大小给出A、B、C、D四个等级，并显示新数据集class(A student achievement management database as the table, called for the establishment of a SAS data set score, and output display create a new data set class, add an average score aver evaluation variables and grade level variables, grade values are based on the size of a aver value the A, B, C, D four grades, and displays the new data set of class)

本人编写的绘制离散信号在滤波前后的频谱图(I prepared by drawing discrete signal frequency spectrum before and after filtering)

数据挖掘中K均值算法的实现用MATLAB编写(data mining to the K-means algorithm to achieve prepared using MATLAB)

该算法是CHAN定位算法，运用函数的形式编写，利于初学者学校规范化的编程方法(A simple and efficient estimator for hyperbolic location)

简单数字调制编程，方便初学者学习 简单数字调制编程，方便初学者学习(Simple digital modulation program, easy for beginners to learn simple programming of digital modulation, easy for beginners to learn)

说明：  MATLAB实现的直接传输通信的统计误码率仿真。(MATLAB realization of the direct transmission of communication statistics BER simulation.)

rbf神经网络训练以及模板，matlab应用神经网络可以省去很多人工模拟的麻烦(rbf neural network training, and templates, matlab application of artificial neural network can save a lot of trouble)

说明：  parzen窗法，功能是根据样本进行概率密度函数估计。实现了对正态分布概率密度函数和均匀分布双峰概密函数进行估计(Parzen window method, function is based on a sample of the estimated probability density function. The realization of the normal distribution probability density function and uniform distribution Bimodal density function is estimated over)

在时间上使用隐式有限差分法，空间上使用后向差分法，对耦合波方程组离散化，进而对受激布里渊散射的能量反射率和产生SBS的阈值能量进行数值模拟。(Begin with the coupled wave equations which describe the interactions of the pump, the sound and the Stokes wave in the process of SBS. The equations are simplified according practical conditions, and one-dimension theoretical models are obtained aiming at unfocused pump as well as focused pump. The coupled equations are turned discrete using the method of implicit finite difference in terms of time and backward difference in terms of space.)

This is a matlab code for car license number recogniser.