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AnalyticAnelastic
二维粘弹性介质中波的传播的解析形式。应用Carcione等在1988年发表的《WAVE PROPAGATION SIMULATION IN A LINEAR VISCOELASTIC MEDIUM》一文中的方法，更加详细的介绍见英文描述。该代码对于做波场模拟的同学有很好的参考价值。( MATLABScript for obtaning the analytical solution for 2D wave propagation in a viscoelastic medium, based on the Appendix B of paper of Carcione et al. (1988)(1), corrected in (2).
The source used is a Ricker wavelet in the y velocity component.
A figure of the source temporal function and its inverse Fourier transform are provided to verify the good working of the method. Also works for elastic variables by substituting the values of vp and vs by real constant ones (vp_0 & vs_0).
Attenuation is implemented by GMB-EK rheology presented in (4) and thoroughfully explained in (3).
In order to make a proper comparison with numerical data it is recommended to either use the same rheology in both the numerical and the analytical. It is also possible to get an almost constant Q value by increasing a lot the number of mechanisms used in both the numerical and the analytical solutions, thus minimizing the effects of the Q fitting in the comparison.)
- 2012-04-23 13:18:07下载
- 积分：1
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gmres
gmres 方法。视图求解线性方程组A*x=b的解x。nXn的稀疏矩阵A必须是方程且应是大型稀疏矩阵。列向量b的长度必须为n。(gmres method. View solving linear equations A* x = b the solution x. nXn sparse matrix A must be equation and should be large sparse matrix. The length of the column vector b must be to n.)
- 2013-09-13 16:29:56下载
- 积分：1
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w
说明： 任意给定一个M进制的数X，利用栈实现数值转换。(Given an arbitrary number of M band X, use the stack to achieve numerical conversion.)
- 2010-07-06 10:32:10下载
- 积分：1
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Root_Loci
根轨迹文件 多刚体动力学 方程 根分布 稳定分析 (Root locus document root distribution multibody dynamics equations stability analysis)
- 2014-09-21 21:13:28下载
- 积分：1
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code
用C++编写的大整数计算的模板，可实现加、减、乘、除、取模等运算，可以通过此源码学习高精度的实现。(Written with C++ template large integer can be realized addition, subtraction, multiplication, division, modulus and other operations, you can achieve high-precision study of this source.)
- 2011-06-05 17:19:32下载
- 积分：1
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feature standar nb
利用Python实现特征的MinMax标准化和Z-Score标准化两种特征归一化方法。并用原特征、两种归一化特征分别进行朴素贝叶斯模型训练，比较模型性能。(Two normalization methods of MinMax normalization and Z-Score standardization are implemented by Python. The naive Bayes model is trained with the original features and two normalization features respectively to compare the performance of the model.)
- 2018-06-25 11:47:44下载
- 积分：1
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pso
粒子群算法，也称粒子群优化算法或鸟群觅食算法（Particle Swarm Optimization），缩写为 PSO。它具有精度高，收敛快等优点，广泛用于系统辨识、函数优化等领域。文件pso.m是粒子群算法辨识程序，在此基础上，需要自行编写目标函数计算程序以实现不同系统的参数辨识。(Particle swarm optimization (PSO), also known as particle swarm optimization algorithm or bird swarm foraging algorithm (Particle Swarm Optimization), abbreviated as PSO. It has the advantages of high precision and fast convergence. It is widely used in system identification, function optimization and other fields. The document pso.m is a particle swarm algorithm identification program. On this basis, it is necessary to write an object function calculation program to realize the parameter identification of different systems.)
- 2017-09-29 12:52:29下载
- 积分：1
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ekfcode
Introduction to Estimation and the Kalman Filter (KC-1)
Extended Kalman Filter Navigation System Example
- 2008-03-03 15:56:52下载
- 积分：1
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3D-fdtd
三维的有限时域差分源程序，边界条件为pml(Three-dimensional FDTD source, boundary conditions for the PML)
- 2020-11-06 21:39:49下载
- 积分：1
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optimization-mathematical-methods
最优化课件用于最优化数学方法学习，包括惩罚函数，乘子法等(Optimization courseware for optimizing mathematical methods of learning, including the penalty function multiplier method)
- 2016-04-06 10:56:59下载
- 积分：1
