first_order_differ---solve

包括基本的克里金(Kriging)插值法实现代码，仅实现基本方法部分，不包含扩展克里金方法( kriging uses ordinary kriging to interpolate a variable z measured at locations with the coordinates x and y at unsampled locations xi, yi. The function requires the variable vstruct that contains all necessary information on the variogram. vstruct is the forth output argument of the function variogramfit. This is a rudimentary, but easy to use function to perform a simple kriging interpolation. I call it rudimentary since it always includes ALL observations to estimate values at unsampled locations. This may not be necessary when sample locations are not within the autocorrelation range but would require something like a k nearest neighbor search algorithm or something similar. Thus, the algorithms works best for relatively small numbers of observations (100-500). For larger numbers of observations I recommend the use of GSTAT. Note that kriging fails if there are two or more observa)

大型上用有限元软件ABAQUS的用户自定义材料子程序UMAT，用于计算材料低周疲劳极限和损伤下的应力应变关系(calculating material low cycle fatigue limit)

mumford source code........

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.)

Ⅰ层模型声波波场数值模拟源程序,对各向异性介质中的地震波进行研究，无论是进行野外施工技术研究，还是进 行岩层岩性参数与波动方程之间的关系的研究，或者是进行各向异性介质中地震波 场处理与分析的研究，都离不开各向异性的地震波场数值模拟。(Ⅰ layer model numerical simulation of acoustic wave source for seismic waves in anisotropic media research, whether in carrying out field work research, or to rock lithology parameters and the wave equation of the relationship between research, or to the anisotropy of seismic wave fields in media processing and analysis of the study, are inseparable from anisotropy of seismic wave field numerical simulation.)

The solver was mdae to solve the teat tansfrer fields with cooling and hot zone. The Gauss-seidial, ADI, Laasonnen, and Crank-Nicolson schemes are present in the code. You can handle the method you want, iteration and the level of tolerance. The code was made at the LINUX platform. Let me know if you need assistance.

使用Fortran编程，有限差分法计算雷诺方程(Reynolds equation calculated using Fortran programming, finite difference method)

一篇论文，转子动力学方面，思路独特，新颖性强。题目为叶片-转子-轴承系统的非线性动力学问题研究(Paper, rotor dynamics, the idea of ​ ​ unique, innovative and strong. Entitled blades- Rotor- bearing system of nonlinear dynamics)

用于弹塑性本构的切线刚度计算，基于塑性本构的增量理论编写(flow theory coupled with damage failure criteria of the program for the vumat ABAQUS program, functional simulation load to failure of the process of destruction)

混合高斯模型 对于给定的数据，可以自动选择最佳聚类数目和聚类中心，并根据判决规则进行收敛，运算很快，非常方便(Mixed-Gaussian model for a given data, can automatically select the best cluster number and cluster centers, and in accordance with decision rules convergence, compute very fast, very convenient)