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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)

说明：  matlab实现的arnold置乱变换,很好用(matlab implementation arnold scrambling transformation, useful)

DQM法matlab代码，用于求解输液管道的失稳问题，在边界弹簧刚度变化的情况下，给出了临界失稳流速。(DQM method matlab code for solving the instability problem pipes conveying fluid, the spring stiffness in the border cases, given the critical buckling velocity.)

MATLAB的语音工具箱的附加文件，和VOICEBOX一起使用(MATLAB toolbox add voice files, and use VOICEBOX)

Some matlab source matlab(Some Matlab the source Matlab)

眼睛图像虹膜区域提取，内附简单说明。采用粗精双重定位。(iris recognize)

基于GMM的说话人识别程序，提取梅尔倒谱特征进行训练(voice detection based on GMM)

介绍matlab中guide基本控件的使用方法的程序(introduce the basic idea of how to use guide in matlab)

量化投资——以Matlab为工具第十章：高级篇-基于MATLAB的支持向量机（SVM）在量化投资中的应用(Quantitative trading)

玻璃切割项目最低水平线算法MATLAB源码，已通过调试(Glass cutting project MATLAB source code, has passed the commissioning)