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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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jueceshu
从网络上搜集的决策树源码，包括C4_5、ID3、CART_iris三个源码，供大家一起学习研究。(Decision tree collected from the network source, including C4_5, ID3, CART_iris 3 source for study and research with everyone.)
- 2020-10-29 14:39:56下载
- 积分：1
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MSK
MSK的调制算法和解调算法,大家有需要的可以看一看，参考一下。(MSK modulate/demodulate)
- 2009-12-14 19:15:57下载
- 积分：1
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fhtree1
huffmann code..........................................
- 2011-05-13 03:58:01下载
- 积分：1
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hart
HART协议文本，很难找到的，对开发HART协议相关特别有用。(HART text of the agreement, it is difficult to find, on the development of HART protocol related particularly useful.)
- 2020-11-25 15:29:32下载
- 积分：1
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vblast-mimo
Vertical – Bell – Laboratories –Layered –Space - Time for MIMO matlab
- 2011-05-24 18:40:05下载
- 积分：1
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imm4813
一篇国外的风力机非线性控制文章，很有参考意义。(A foreign wind turbine nonlinear control article, very useful.)
- 2013-12-30 18:10:25下载
- 积分：1
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1-Dmatrix
一维光子晶体电场分布，可以修改模型及其参数(1-Dmatrix code with electric-field distribution)
- 2021-03-06 14:49:30下载
- 积分：1
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classification
This is the world matlab code for the classification of Pattern recognition, with the random and NN method
- 2013-02-02 02:51:24下载
- 积分：1
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parabolic_equation_ADI
求解抛物型方程的交替隐方向P-R差分格式的matlab程序实现。不过大家在用的时候要用到原函数f.m和精确解函数uexact.m，应用程序的时候只要修改精确解和右端项就可以了。(Solving Parabolic Equations PR alternating direction implicit difference scheme of matlab program. But we can use the time to use the original function fm and the exact solution function uexact.m, whenever an application to amend the exact solution and the right side of it.)
- 2008-12-13 19:46:57下载
- 积分：1
