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FEM_Eq2
to solve the ordinary differential equation given as
x^2 u - 2x u - 4u = x^2, 10 < x < 20
u(10) = 0 and u(20) = 100
using 10 linear elements
- 2010-10-28 18:50:14下载
- 积分:1
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矩形件下料问题
“模拟退火”算法是源于对热力学中退火过程的模拟,在某一给定初温下,通过缓慢下降温度参数,使算法能够在多项式时间内给出一个近似最优解。利用模拟退火算法,基于最优下料编码方式,对矩形件进行下料处理。("Simulated annealing" algorithm is derived from the simulation of the annealing process in thermodynamics. At a given initial temperature, the algorithm can give an approximate optimal solution in polynomial time by slowly decreasing the temperature parameter. Based on optimal blanking coding method, simulated annealing algorithm is used to blanking rectangular parts.)
- 2021-04-17 17:58:52下载
- 积分:1
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04 图论模型-Dijkstra算法
说明: 依据图论原理,使用matlab编写,用以进行图论相关的研究,可以用来理解Dijstra算法,并在此基础上做相关改进(According to the principle of graph theory, using MATLAB to write, for graph theory related research, can be used to understand Dijstra algorithm, and on this basis to make related improvements)
- 2021-01-25 16:40:01下载
- 积分:1
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lzxec
matlab中编程实现的线性最小二乘拟合函数:
lzxec:功能:离散试验数据点的线性最小二乘拟合(matlab programming in a linear least-squares fitting function: lzxec: Function: discrete experimental data points, the linear least-squares fitting)
- 2009-11-02 14:56:30下载
- 积分:1
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task3
递推最小二乘法和递推阻尼最小二乘法仿真,系统模型如下:
y(t) - 1.6 * y(t - 1) + 0.7 *y (t - 2) = u(t - 1) + 5.5 * u(t – 2) + e(t),试用递推最小二乘法和递推阻尼最小二乘法进行参数识别,并进行比较
(Damped recursive least squares method and recursive least squares method simulation, the system model is as follows: y (t)- 1.6* y (t- 1)+ 0.7* y (t- 2) = u (t- 1)+ 5.5* u (t- 2)+ e (t), the trial damped recursive least squares method and recursive least squares method for parameter identification, and comparison)
- 2011-12-01 00:09:15下载
- 积分:1
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applyfading
function thah simulates a fading channel without gaussien nose
- 2015-04-22 01:26:04下载
- 积分:1
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matlab
说明: 很好用的小波算法,具有良好的尺度不变形,对初学者有用。(Nice wavelet algorithm, have good deformation, the scale of beginners useful)
- 2011-03-23 10:22:18下载
- 积分:1
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adaptivemedian
adaptive median filter for image
- 2015-02-20 17:55:51下载
- 积分:1
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decim.m
Matlab function o decimate an image
- 2009-09-18 22:24:27下载
- 积分:1
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IDW
IDW插值法,距离倒数乘方格网化方法是一个加权平均插值法,可以进行确切的或者圆滑的方式插值。方次参数控制着权系数如何随着离开一个格网结点距离的增加而下降。对于一个较大的方次,较近的数据点被给定一个较高的权重份额,对于一个较小的方次,权重比较均匀地分配给各数据点。 计算一个格网结点时给予一个特定数据点的权值与指定方次的从结点到观测点的该结点被赋予距离倒数成比例。当计算一个格网结点时,配给的权重是一个分数,所有权重的总和等于1.0。当一个观测点与一个格网结点重合时,该观测点被给予一个实际为 1.0 的权重,所有其它观测点被给予一个几乎为 0.0 的权重。换言之,该结点被赋给与观测点一致的值。这就是一个准确插值。 距离倒数法的特征之一是要在格网区域内产生围绕观测点位置的"牛眼"。用距离倒数格网化时可以指定一个圆滑参数。大于零的圆滑参数保证,对于一个特定的结点,没有哪个观测点被赋予全部的权值,即使观测点与该结点重合也是如此。圆滑参数通过修匀已被插值的格网来降低"牛眼"影响。 (Inverse Distance to a Power)
- 2010-12-20 16:08:08下载
- 积分:1