LDPCbianyima

说明：  图像置乱中的仿射变换，优点是加密和解密的不需要周期迭代，图像置乱效果好(it is good for image scrambling becaus of low compute complexity)

分形方法描述了物体的粗糙度，可以结合实体造型软件使用(fractal interpolated)

SAE J1587-2002.Electronic data interchange between microcomputer systems in heavy-duty vehicle applications

说明：  一段用来做数值计算的代码，主要是做的数值模拟，用来模拟流线形态的代码()

讲述了机械故障诊断中一些理论知识，如现在常用的HHT，对初学者有帮助。(Tells the story of some mechanical fault diagnosis theory of knowledge, such as the now commonly used HHT, help for beginners.)

内容完整且每章相对独立；是一本简明的MATLAB参考书，既适用于初学者，也适用于高级MATLAB用户。对MATLAB与FORTRAN、C等语言结合的描述更是所有MATLAB书籍中少有的一大特色。(The contents of each chapter is relatively complete and independent it is a simple MATLAB reference books, both for beginners, but also to high-level MATLAB users. Of MATLAB and FORTRAN, C and other languages with a description of all MATLAB books is a major feature of the few.)

经典的拓扑优化SIMP方法，Sigmund写的(Classical SIMP topology optimization methods, Sigmund write)

1.n个节点分段Lagrange插值多项式； 2.使用格式y=lagrange(x0,y0,x,k)； 3.输入项x0为n维插值节点向量，y0为n维被插函数值向量； 4.x为m维插值点向量，k为分段插值多项式次数，不超过3，缺省为k=1； 5.输出y为插值点x处的函数值；( 1.n a sub-node Lagrange interpolation polynomial 2. The use of the format y = lagrange (x0, y0, x, k) 3. Input x0 of interpolation nodes for the n-dimensional vector, y0 for n-dimensional vector function to be inserted 4.x interpolation points for the m-dimensional vector, k is the number of sub-polynomial interpolation, not more than 3, the default for k = 1 5. output y for the interpolation points x Department of function )

VIEW3D GUI for interactive viewing of 3D Volumes in matlab

matlab实现快速傅里叶变换的原始程序，有助于理解蝶形运算(matlab realize the fast Fourier transform of the original program, help to understand the butterfly operation)