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fdtd2D
二维光子晶体的FDTD法,MATLAB 源程序(Two-dimensional photonic crystals FDTD method, MATLAB source code)
- 2010-05-08 10:05:48下载
- 积分:1
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w1
实现求圆形、三角形、矩形的面积和周长。要求和说明如下:
(一) 定义接口sharp接口
(二) 通过实现接口定义Rect、Triangle、Circle的类,并且一个构造方法,并实现求面积和周长的方法(其中三角形斜边的计算公式c=Math.sqrt (width * width + height * height ) )
(Seeking to achieve circular, triangular, rectangular area and perimeter. Requirements and are described as follows: (a) define the interface sharp interfaces (two) by implementing the interface definition Rect, Triangle, Circle of class and a constructor method, and implement methods for the area and perimeter (where the hypotenuse of the triangle formula c = Math.sqrt (width* width+ height* height) ))
- 2013-12-19 21:22:57下载
- 积分:1
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lagrange
拉格朗日插值,进行5,10,20点插值,验证插值具有振荡现象(Lagrange interpolation for 5,10,20 point interpolation, interpolation with oscillation phenomenon verification)
- 2013-11-16 22:36:42下载
- 积分:1
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Matlab_code_CCS-MMV
基于原子范降噪的线谱估计技术,内容主要高分的压缩感知线谱估计,在雷达领域有着非常广泛的用途。(Atomic norm denoising with applications to line spectral estimation for radar, sonar and wireless commmunication)
- 2020-06-29 15:00:02下载
- 积分:1
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k-meansClustering
这里的k-means聚类,是事先给出原始数据所含的类数,然后将含有相似特征的数据聚为一个类中。(Where k-means clustering, is given in advance the number of classes contained in the original data, then the data contained similar characteristics grouped into a single class.)
- 2015-01-15 15:22:59下载
- 积分:1
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emd12
编写的EMD分解程序,希望能帮助到需要的人(Preparation of EMD decomposition process, hoping to help people in need)
- 2013-11-22 17:48:20下载
- 积分:1
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MOM
说明: 利用矩量法求解hallen方程和伯克林顿方程,得到电流分布的matlab程序。(The use of moment method for solving equations and Peter Clinton Hallen equation, the current distribution of the matlab program.)
- 2008-09-02 15:37:28下载
- 积分:1
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MATLAB
一、 牛顿-拉夫逊法概要
首先对一般的牛顿-拉夫逊法作一简单说明。已知一个变量X的函数
(4-6)
解此方程式时,由适当的近似值X(0)出发,根据 (4-7)
反复进行计算,当X(n)满足适当的收敛判定条件时就是(4-6)式的根。这样的方法就是所谓的牛顿-拉夫逊法。
式(4-7)就是取第n次近似解X(n)在曲线 上的点 处的切线与X轴的交点作下一次X(n+1)值的方法。参考图4-2(a)。在这一方法中为了能收敛于真解,初值X(0)的选取及函数f(X)必须满足适当的条件,如图4-2(b)所示的那种情况就不能收敛或收敛到别的根上去。
这一方法还可以做下面的解释,设第n次迭代得到的解与真值之差,即 的误差为 时,则
(4-8)
把 在 附近对 用泰勒级数展开
(4-9)
上式略去 以下的项
(4-10)
的误差可近似由上式计算出来
图4-2
(4-11)
比较式(4-7)和(4-11),可以看出牛顿-拉夫逊法的修正量和 的误差的一次项相等。
用同样的方法考虑,给出对n个变量 (:Because of the importance and complexity of power system, better algorithm and programme language
is very important . An interior point method based on the perturbed Karush2Kuhn2Tucker (KKT) condition is pre2
sented in this paper , where the method and process for the optimal power flow is treated through the Matlab’s
symbolic math toolbox and Mfunction is also presented. Using the symbolic code , it can improve the adaptability
of the programme dramatically. The advantage is that , what we need to do is change the model expression. We
can make use of the symbolic programme to check our programme while we write the Mfunctions. Using the Mat2
lab , we find the optimal solutions and calculate quickly and efficiently. It has proposed the powerful and unique
functions of Matlab in the optimization and calculation for power system.
Key words :power system symbolic calculation optimal power flow interior point method)
- 2020-07-08 16:38:56下载
- 积分:1
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sheffield_gatbx
MATLAB遗传算法工具箱,为遗传算法的实现提供了极大的方便(MATLAB genetic algorithm toolbox for the genetic algorithm provides a great convenience)
- 2013-10-06 21:35:38下载
- 积分:1
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Lepingle_Ribemont_SDE
随机微分方程数值解! Numercal Sulution Of Stochastic Differential Equations
By Peter E.Kloeden Eckhard Platen
PC-Exercise 11.4.1
Figure 11.4.1
求解方程 11.4.1(Numercal Sulution Of Stochastic Differential Equations
By Peter E.Kloeden Eckhard Platen
PC-Exercise 11.4.1
Figure 11.4.1
)
- 2011-12-24 09:42:09下载
- 积分:1