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说明：  用fortran 70实现数值积分，并实例计算了三个函数，导出了积分值和误差(The numerical integration is realized by FORTRAN 70, and three functions are calculated with examples. The integral values and errors are derived.)

说明：  非线性有限元程序，NONSAP is a general finite element program for the nonlinear static and dynamic analysis of complex structures. The program is very flexible and was designed to be extended and modified by the user. In particular the program can easily be modified to use a different formulation of the equations of motions, different time integration operators and other additional options. (Nonlinear finite element program, NONSAP is a general finite element program for the nonlinear static and dynamic analysis of complex structures. The program is very flexible and was designed to be extended and modified by the user. In particular the program can easily be modified to use a different formulation of the equations of motions, different time integration operators and other additional options.)

fortran code for LINEAR_WAVE PROPAGATION by forward time forward spase method.

复合材料破坏失效vumat子程序，使用hsshin准则判断失效，具有刚度缩减，(The VUMAT subroutine for failure of composite materials is judged by hsshin criterion, and stiffness is reduced.)

UMAT for Abaqus,程序由Fortran语言写成，用于计算一般弹塑性材料的应力应变关系。(UMAT for Abaqus, written in Fortran language, is used to calculate the stress strain relationship of general elastoplastic materials.)

地球物理中的G-S变换，电磁场频率域变换到时间域。(Geophysics in the GS transformation, electromagnetic frequency domain transform to the time domain.)

利用abaqus二次开发平台，利用for语言编写的混凝土弹性本构(Use abaqus secondary development platform, the use of language for concrete elastic constitutive)

Abaqus UMAT code 适用于平面应变，轴对称弹塑性本构关系，也适用于大应变情况，使用显示积分算法。(Abaqus UMAT code applies to plane strain, axisymmetric elastoplastic constitutive relation, also applicable to large strain, using the integration algorithm.)

利用Mathematica实现数值分析，包括Gauss-Seidel迭代，Jacobi迭代法，SOR法，牛顿迭代法等(Mathematica is used to realize numerical analysis, including Gauss-Seidel iteration, Jacobi iteration, SOR method, Newton iteration method, etc.)

多目标跟踪的粒子滤波器，各种kalman滤波器的设计，采用加权网络中节点强度和权重都是幂率分布的模型。( Multi-target tracking particle filter, Various kalman filter design, Using weighted model nodes in the network strength and weight are power law distribution.)