spgl1-1.8

说明：  相变UDF，包括质量传递和热量传递，能够进行气液相变的模拟(Phase transition UDF, including mass transfer and heat transfer, gas-liquid phase transition can be simulated)

利用FFT估计正弦信号的频率,要估计一个叠加了高斯白噪声的正弦信号 的频率 ，可以通过对x(n)做傅里叶变换，得到频谱图，找出幅度的最大值对应的频率值 ，进行多次变换，求出均方误差 。改变信噪比SNR，通过仿真可以得出随着信噪比增加，均方误差减小。(Sinusoidal signal using FFT frequency estimation, to estimate a Gaussian white noise superimposed on the frequency of sinusoidal signals, can be achieved by x (n) be the Fourier transform to get spectrum to identify the magnitude of the frequency value corresponding to the maximum , several transformations, find the mean square error. Change the signal to noise ratio SNR, the simulation can be drawn as the SNR increases, the mean square error decreases.)

说明：  振动台试验数据整理和处理算法,部分代码使用了王济、胡晓编著的《MATLAB在振动信号处理中的应用》一书中的代码(Data arrangement and processing algorithm of shaking table test)

非线性微分方程的人工免疫网络数学模型，适合于高水平研究者(Nonlinear differential equation mathematical model of artificial immune network, suitable for high-level researchers)

说明：  使用牛顿迭代法求解非线性方程组，程序简单易懂，初学者都能看明白。(Newton iterative method is used to solve the nonlinear equations. The program is simple and easy to understand for beginners.)

微波仿真论坛下载的一位版主的稿子，有图有例子，手把手教你学习关于CST中的高级语言设计(CST-VBA,The CST STUDIO SUITE tools can be controlled from a Visual Basic (VBA) script. The language of the built in BASIC interpreter is almost 100% compatible with the Visual Basic for Application language. This language may be used either for creating own structure libraries or for the automation of common tasks)

只是一个课堂上做的九九乘法表，可能很多人做过(Just a class to do multiplication table, many people may have done)

这是一个3维8节点计算弹性力学有限元的MATLAB程序： 1） 生成网格的程序，可以更改模型尺寸、单元数量等参数；2）可以 计算刚度矩阵、位移、应力等，并将结果保存；3）可以后处理程序显示结果；(This is a 3-D 8-node MATLAB program for calculating finite element of elasticity:1) mesh generation program, which can change the size of the model, the number of elements and other parameters; 2) stiffness matrix, displacement, stress and so on can be calculated, and the results can be saved; 3) the results can be displayed by post-processing program.)

描述固体凝固的随机变化状态，为fortran语言，请自行下载对应编译器(describe solid phase status, as fortran lauguage, please download associated compiler)

根据当前运动模型，进行Kalman滤波。得到滤波优化后的运动轨迹(Kalman filtering is carried out according to the current motion model)