Abaqus-to-Matlab-software

this is simmulation QPSK modulation in AWGN channel

一次完成算法的最小二乘法的过程辨识代码。以m序列为输入量，用其lsim响应，作为辨识依据(One of the least squares algorithm to complete the process of identification code. To m for the input sequence with its lsim response, as a basis for identification)

matlab 模拟ldpc系统，包括BER和SNR，BER和迭代次数的关系(matlab simulation ldpc system, including the BER and SNR, BER and the relationship of the number of iterations)

人工网络的原理及应用讲义。讲得很详细，包括matlab仿真方法(Principles of artificial network and application notes. Very detailed, including the matlab simulation method)

this book has description of introduction to algorithms.

表情识别：Matlab程序+PDF说明文档。适合初学者(Expression recognition：Matlab sources+ PDF document.It s suitable for the beginners. )

matlab中的蚂蚁算法又叫蚁群算法。主要解决函数优化，寻最优值问题(In matlab ，the ants can revolosion the problem about chath the rightes answer .)

灰色模型的背景值和求导过程的联合优化，效果非常不错(Joint optimization model and gray background value derivation process, the effect is very good)

DistMesh giving a singular FEM matrix?(Hi Anyone here with some experience of using DistMesh in finite element code? I m solving the scalar Helmoltz equation in an annular region in 2D: rho_1 < rho < rho_2 where rho_1 is the radius of a Perfect Electric Conducting cylinder and rho_2 is where the mesh is truncated using an Absorbing Boundary condition. Now, I ve written code to mesh the region myself (by dividing the region into annular rings and picking a fixed number of points on each ring) and I ve written another program which uses DistMesh to mesh the region. I get a nice solution using my own meshing code but the FEM matrix becomes singular when I use DistMesh. This is the DistMesh Code I used: Circle with hole rABC=1.5 rCyl=0.5 fdstring=sprintf( ddiff(dcircle(p,0,0, f),dcircle(p,0,0, f)) ,rABC,rCyl) fd=inline(fdstring, p ) box=[-2,-2 2,2] [p,N]=distmesh2d(fd,@huniform,0.04,box,[]) I tried changing box and the 0.04 value (initial edge length). But every time, the matrix becomes sin)

Hanning window filter