fortran

基于信任域算法求解rosenberg函数的极小值问题(Trust region algorithm for solving the rosenberg function minimum value)

这是一个用FDTD算法计算二维导体方柱散射场RCS的matlab程序.采用UPML吸收边界条件和高斯脉冲源激励,对于学习FDTD方法中的激励源加入,近-远场外推,吸收边界设置等很有帮助(This is a FDTD algorithm using two-dimensional square cylinder conductor scattering RCS of the matlab program. UPML absorbing boundary conditions used and the Gaussian pulse source excitation, the FDTD method to study the excitation source join, near- far outside the push, absorbing boundary settings, such as helpful)

计算水声传播的快速场程序，使用了有限元方法，计算速度快，精度高。(underwater acoustic propagation Fast Field Program, using Finte Element Method,fast and accurate.)

将矩阵显示成地震剖面，如果只 a 是输入，可扩展，X，Z，安姆，连接AMX自动决定，否则为“可扩展”是一个标量， ，z 的载体用于注释的偏移和时间，连接AMX振幅范围内。(The matrix shown as seismic profiles, If only a is enter, scal,x,z,amn,amx are decided automatically otherwise, scal is a scalar x, z are vectors for annotation in offset and time, amx are the amplitude range.)

该程序通过编写fortran，得到abaqus之程序usdfld，并实例分析。(The program is by writing fortran, get abaqus procedures usdfld, and case analysis.)

用于数值积分的稀疏网格高斯埃尔米特方法,可以产生积分节点和积分系数(Sparse Grids Based on Gauss-Hermite Rules)

This directory contains code implementing the K-means algorithm. Source code may be found in KMEANS.CPP. Sample data isfound in KM2.DAT. The KMEANS program accepts input consisting of vectors and calculates the given number of cluster centers using the K-means algorithm. Output is directed to the screen. Usage for KMEANS is: KMEANS SOURCEFILE <enter> The format of the source file is: NPat - Number of patterns (int) SizeVect - Size of vector (int) NClust - Number of cluster centers(int) vect[1,1] ... vect[1,SizeVect] - vector 1 (real) vect[2,1] ... vect[2,SizeVect] - vector 2 (real) . . . . . . vect[NPat,1] ... vect[NClust,SizeVector] - vector N (real) To compile: ICC KMEANS.CPP <enter> (This directory contains code implementing the K-means algorithm. Source code may be found in KMEANS.CPP. Sample data isfound in KM2.DAT. The KMEANS program accepts input consisting of vectors and calculates the given number of cluster centers using the K-means algorithm. Output is directed to the screen. Usage for KMEANS is: KMEANS SOURCEFILE <enter> The format of the source file is: NPat - Number of patterns (int) SizeVect - Size of vector (int) NClust - Number of cluster centers(int) vect[1,1] ... vect[1,SizeVect] - vector 1 (real) vect[2,1] ... vect[2,SizeVect] - vector 2 (real) . . . . . . vect[NPat,1] ... vect[NClust,SizeVector]- vector N (real) To compile: ICC KMEANS.CPP <enter> )

该函数程序用于计算大气米散射中吸收、散射、衰减、后向散射。(Computation of Mie Efficiencies extinction (qext), scattering (qsca), absorption (qabs), backscattering (qb), asymmetry parameter (asy=<costeta>) and (qratio=qb/qsca).)

说明：  可以进行平面拟合，基于matlab语言，简单易懂(It can be used for plane fitting. It is simple and easy to understand based on MATLAB language.)

说明：  关闭OFDM信号子载波，画出OFDM信号频谱图，查看旁瓣泄露情况(Close OFDM signal sub-carrier OFDM signal spectrum plot, view the situation sidelobe leakage)