juliang

改进的GM（1，1）程序，可实现时间序列的灰色等维新息预测，采用弃旧纳新的原则。(The improved GM (1, 1) program, can realize the time series prediction using grey information renewal, discarding the old and new principles.)

说明：  matlab的adi方法求解偏微分方程，精确度较高(ADI method of MATLAB for solving partial differential equations)

说明：  MATLAB的一个使用工具箱，LINGO11汉化无限变量版。(A toolbox of MATLAB, LINGO11 Chinese Infinite Variable Edition.)

说明：  一般的最小二乘通常是一次拿到全部的数据， 对所有数据进行统一优化计算得到模型系数。递推最小二乘是以一种递推的方式计算最小二乘，每次使用最新的测量值，来不断更新模型系数。(General least squares usually get all the data at one time, and perform unified optimization calculations on all the data to get the model coefficients. Recursive least squares is to calculate the least squares in a recursive way, each time the latest measured value is used to continuously update the model coefficients.)

It checks whether the processes r working in safe mode or in Deadlock Condidion.....pls do the modifications as per ur requirement...as it is implemented static

对于abaqus子程序学习的初学者，这是一个学习umat的很好算例,(Abaqus subroutine for beginners to learn, this is a good example to learn umat,)

西安电子科技大学葛德彪教授书后所附fortran程序(Xidian University, Professor Ge Debiao book accompanying fortran program)

The only information passed from difeq to solvde is the matrix of derivatives

Mathematica计算基于力平衡变截面梁单元的质量和刚度矩阵(2D force-based finite element mathemaica)

vasp，功能强大的第一性原理计算软件，请注意版权(The Vienna Ab initio Simulation Package (VASP) is a computer program for atomic scale materials modelling, e.g. electronic structure calculations and quantum-mechanical molecular dynamics, from first principles.)