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main-content
说明: 主成分分析很重要的例子,特别适合于中等研究人员(The example of the main content is fit for middle study student )
- 2011-02-24 21:35:56下载
- 积分:1
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chap09Mfiles
数字信号处理第九章 IIR滤波器的设计 代码实现(Digital Signal Processing Chapter IX IIR filter design code)
- 2014-01-07 22:41:09下载
- 积分:1
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LossCalculation_3Phase3LevelInverter
ANPC三电平逆变器损耗计算的Simulink仿真模型(ANPC three-level inverter loss computing Simulink models)
- 2021-03-26 14:59:13下载
- 积分:1
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LinearBPM
这是一个简单的FFT为无电位1 +1 +1 Ð 薛定谔方程的光束传播方法。如果该软件灵活,允许引入的术语(如果是极少数需要包括色散效应高阶导数)。例如,如果一个人渴望解决的一个方程的形式:
(四/ dz的+ Ð ^ 2/dx ^ 2 - 0.25 * Ð ^ 3/dx ^ 3)== 0 Ÿ
它可以解决使用以下代码:
Ž = linspace(0,1,512)
x = linspace(-5,5,1024)
psi0 =进出口(- x的。^ 2)
Ð = D_lateral1D(十,2)-0.25 * D_lateral1D(十,3)
字段= LinearBPM(psi0,有D,Z)
凡D_lateral1D是一个函数,提供“取代”的微分算子。
这个函数是在一个非线性的BPM,我曾对(分步,谱方法等),将提交给我,当我完成他们的文件和组织功能更复杂的设置非常初期阶段。
(This is a simple FFT based beam propagation method for potential-free 1+1+1D Schrodinger equation. The software if flexible and allows to introduce high-order derivatives in the term (very handful if is needed to include dispersion effects). For example, if one desires to solve an equation in the form:
(d/dz+ d^2/dx^2- 0.25*d^3/dx^3)Y == 0
It can be solved using the following code:
z=linspace(0,1,512)
x=linspace(-5,5,1024)
psi0=exp(-x.^2)
D=D_lateral1D(x,2)-0.25*D_lateral1D(x,3)
field=LinearBPM(psi0,D,z)
Where D_lateral1D is a provided function that "replaces" the derivative operator.
This function is a very early stage in a more complex set of non-linear BPM functions that I have made (split-step, spectral methods, etc.) and I will submit them when I finish their documentation and organization.
Sorry for my English, I m eager for your comments.
)
- 2010-07-05 12:02:42下载
- 积分:1
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MATLAB
主要讲述了matlab相关的数学问题的解答,很全面。(Focuses on matlab related mathematical questions, very comprehensive.)
- 2012-06-07 20:25:03下载
- 积分:1
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UMAT-fuhao-shuoming
abaqus二次开发子程序umat符号说明及实例详解,初学者必备之基础(abaqus secondary development subroutine umat symbol descriptions and examples detailed essential foundation for beginners)
- 2021-04-05 16:59:04下载
- 积分:1
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matlab_plot_gps_satellites
卫星星下点matlab程序:卫星星下点的运行轨迹代码(Matlab program for satellite subsatellite point)
- 2019-05-09 14:41:50下载
- 积分:1
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cell2num
This matlab function convert an all numeric cell array to a double precision array...
- 2010-11-28 22:54:46下载
- 积分:1
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22
说明: 基于特征点的图像拼接,但需要人工选择特征点。(Based on feature points of the image stitching, but the need to manually select feature points.)
- 2010-01-16 00:01:31下载
- 积分:1
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matlab
说明: 利用matlab相关绘图功能制作图形文件(利用matlab相 ??绘???| 能制 ????形文 ?)
- 2008-08-26 16:55:41下载
- 积分:1