numerical-integration-for-structural-dynamics

Sample ppt for action of a class teacher

利用递推最小二乘法对参数进行辨识，有作图结果(Using the recursive least squares method to identify the parameters, there are mapping results)

采用的是脉冲对消法，自己编的5种调制信号，有井曲线作为输入可计算其地震波的衰减。( It uses a pulse of consumer law, Own five modulation signal, There is a well attenuation curve as input to calculate its seismic waves.)

一种常用的插值计算方法，普通克里金法，采用球状模型的半变异函数。(A common interpolation methods, ordinary kriging method using spherical model semivariogram.)

这是地面数字电视国标的三种H矩阵生成程序，只要把标准附录B里的数据根据MATLAB的格式要求输入，就可以根据这些程序生成完整的H矩阵，稍后还有生成好了的H矩阵(This is a terrestrial digital TV National H matrix generate three procedures, as long as the criteria in Appendix B the data format in accordance with the requirements MATLAB input, on the basis of these procedures can generate a complete H matrix, also generate good will of the H matrix)

说明：  通过编程实现通过共轭梯度法和Gauss-Seidel迭代法两种方法求解方程组(By programming through the conjugate gradient method and Gauss-Seidel iteration method for solving equations of two)

this file is about risk managment in marketing....

差异演化算法的MATLAB程序，程序说明非常详尽，AI研究者必备(Differential evolution algorithm, Matlab)

This M Code simulate the effects of clipping and filtering on PAPR PAPR reduction in OFDM-based wireless standard.Also the performance of BER versus SNR of original OFDM signals with PAPR reduction based on clipping and filtering schemes over AWGN channel is evaluated. The simplest and most widely used technique of PAPR reduction is to basically clip the part of signals that are outside the allowed region.Clipping methode introduces both in band distortion and out of band radiation into OFDM signals which degrades the performance including the BER and spectral efficiency.Filtering can reduce out of band radiation after clipping although it can not reduce in-band radiation distortion.However, clipping may cause some peak regrowth so that the signal after clipping and filtering will exceed the clipping level at some point.To reduce peak regrowth a repeated filtering and clipping operation can be used to obtain a desirable PAPR at a cost of computational complexity increase.

m、W序列的产生及仿真，扩频复合系统的源程序(m and W sequence generation and simulation, source of spread spectrum composite systems)