hhspectrum

利用FDTD算法简单计算波导耦合环的M文件。( M-file of using FDTD approach simulation the waveguide coupling ring)

1、 写出此两点边值问题的积分形式； 2、 构造有限元方程； 3、 编程计算显示计算结果。(1, write the two-point boundary value of the integral form 2, structural finite element equation 3, programming calculations show the results.)

根据已知的邻接矩阵画出对应的网络图，节点用蓝点表示，连接用线表示(According to the adjacency matrix of the known draw the corresponding network diagram, the node with the blue dot, and connected with lines)

金属表面反射模型算法，用于计算不同金属的偏振反射参数。(Metal surface reflectance model algorithm used to calculate the different metal polarized reflectance parameters.)

程序用Fortran95标准，给出了双共轭梯度法求解超大型稀疏矩阵的子程序。还给出了一个例子，例子的数据用索引存储了维数将近10万的对称稀疏正定矩阵。(Using Fortran95, a method of Biconjugate gradient for super linear sysem is provied. In addition, a example with the storage type of row-column index is also provide for test these subroutines. )

利用楚列斯基分解法和平方根法分解对称矩阵，较为实用(use the Cholesky method and esquare-root method to solve the problem of Triangle decomposition of matrix)

数值分析中用C 语言验证验证Gauss列主元消去法。(Numerical analysis using the C language to verify verify the Gauss column principal component elimination.)

格子玻尔兹曼模型DnQm系列模型中应用较为广泛的D2Q7模型源代码，用于模拟流体的流动。(The D2Q7 model source code of the the Lattice Boltzmann the model DnQm series model is widely used to simulate fluid flow.)

fft变换后求出主频，FFT transform to calculate frequency

PLS计算 Cross-Validation模型计算(PLS calculated Cross-Validation model)