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Order-disorder
有序无序转变的计算机模拟——MC算法
一个样品做实验，从低温有序相，逐渐升温，到高温无序相。
模型假设：
1 模拟三维简单斜方，AB型合金，共有M*N*L个原子；
2 最邻近假设，即只考虑最邻近原子之间的相互作用，次邻近和更远的原子之间的作用忽略（误差较大），
，在简单斜方中，最邻近原子数z=6；
3 只考虑势能的作用，AA，BB，AB原子间的作用用Eaa,Ebb,Eab=Eba表示 且忽略振动能（原则上，温度很高时，不能忽略）等；
4 各原子之间的相互作用独立，即各化学键相互独立；
5 边界原子任然周期排列，只不过，邻近原子数减小，能量较高；边界面上的原子z=5；线
上的原子z=4，顶点上的原子z=3；由于顶点上只有四个原子，算法中不考虑这种情况；
6 其它假设。( Order-disorder transition of computer simulation- MC algorithm a sample experiment, from the low-temperature ordered phase, gradually warming up to a high temperature disordered phase. Model assumes that: 1 of three-dimensional rhombic, AB-type alloy, a total of M* N* L atoms 2 nearest the assumption that only consider the interaction between the neighboring atoms, and further sub-adjacent atoms ignore the interaction between the (larger error), , in the simple oblique Fang, nearest neighbor atoms, z = 6 3 only consider the potential role, AA, BB, AB interatomic with Eaa, Ebb, Eab = Eba representation and ignore the vibration energy (principle, the temperature is high, it can not be ignored), etc. 4 each atom interactions between independent, which means that each bond independently 5 boundary periodic arrangement of atoms in any course, but , adjacent atoms decreases, the higher energy boundary atomic plane z = 5 atoms on line z = 4, the vertex atoms z = 3 only four)
- 2013-05-23 20:17:12下载
- 积分：1
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bpsk
BPSK基于平方谱和四次方谱的载频估计，可以用于BPSK 16QAM MSK信号的载频估计。(BPSK carrier frequency estimation based on square spectrum and fourth power spectrum, can be used for 16 qam MSK BPSK signal carrier frequency estimation)
- 2014-11-07 13:52:32下载
- 积分：1
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model10b
数学建模清华数模讲义\model10b (Mathematical modeling Qinghua digital-analog handouts model10b)
- 2010-01-13 23:25:57下载
- 积分：1
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example1.
编写Matlab程序统计“钢筋图片.bmp”文件中钢筋的数量,形态学的具体应用之一.(prepared Matlab statistical procedures "reinforced pictures. Bmp "document reinforced the quantity, Morphology of one specific application.)
- 2006-12-15 13:20:55下载
- 积分：1
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dss
DS扩频信号抑制正弦干扰性能仿真程序(DSSS signal sinusoidal interference suppression performance simulation program)
- 2007-04-21 10:35:47下载
- 积分：1
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matlab_function
此文档收录matlab中的常用函数，方便查阅(This is a PDF file including various useful functions of matlab.)
- 2010-09-20 02:40:41下载
- 积分：1
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tuto
some basic tutorial for matlab programming easy to understand
- 2011-06-13 18:55:55下载
- 积分：1
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multipath-fading
matlab code for multipath rayleigh fading
- 2011-07-06 02:04:52下载
- 积分：1
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psk
PHASE SHIFT KEING MODULATION TECHNIQUE FOR COMMUNICATION
- 2011-08-28 10:55:49下载
- 积分：1
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zongtizuixiaoercheng
本程序具体介绍了利用总体二乘算法对含有两个正弦信号和高斯白噪声信号的AR参数估计和其功率谱的估计。(This procedure introduced by overall two multiplication algorithm for containing two sinusoidal signal and the Gauss white noise signal AR parameter estimation and its power spectrum estimation.
)
- 2012-11-26 21:05:05下载
- 积分：1
