daima

自己编写的一个正弦函数频谱的估计，利用FFT函数实现，有详细注释，方便理解，附带仿真图一张(A sine function spectrum estimate their preparation, the use of FFT function implementation, detailed notes, easy to understand, with a simulation map)

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)

说明：  ARIMA的R语言实现。这是一份关于使用R统计软件进行时间序列分析的入门文档(This is a start-up document about time series analysis using R statistics software.)

文章由重力和重力梯度的基本理论出发，讨论了重力分量和重力梯度张量分量的2-D傅立叶变换 与重力位的傅立叶变换之间的关系。推导了航空重力梯度仪的测量原理，并对航空重力梯度测量的 应用做了简要的介绍(Article by gravity and gravity gradient of the basic theory, discussed the components of gravity and gravity gradient tensor component of the 2-D Fourier Transform and gravity places the relationship between the Fourier transform. Derivation of the airborne gravity gradiometer measuring principle, and airborne gravity gradient measurements application to do a brief introduction)

C语言矩阵求逆模块,输入矩阵调用此模块即可求出对应的逆矩阵(C language matrix inversion module)

建筑结构单自由度结构在地震作用下的位移响应杜哈梅积分求解(The SDOF structure of building structures under earthquake displacement response Du Hamei Integral Solution)

FFT和FIR 快速傅里叶变换和FIR滤波器实验程序(Fast Fourier Transform FFT and FIR and FIR filter experimental procedure)

使用五点差分格式计算一个微分方程在边值问题上的解(The use of a five-point difference scheme for the calculation of a differential equation in the solution of boundary value problems)

海冰密集度的matlab计算程序和分析！(The sea ice concentration matlab procedures and analysis!)

本程序可用于线性插值,Fortran源码用于插值计算。(Program for linear interpolation.)