Preprocess

spectral-clustering-demo 谱聚类的matlab演示程序，是学习谱聚类的好资料，经调试通过，包含n-cut和改进的n-cut(spectral-clustering-demo demo matlab spectral clustering, spectral clustering is good information to learn by debugging through, including the n-cut and improving the n-cut)

CDMA系统仿真,非常好的东西哦，希望大家赶快下载吧(CDMA system simulation)

本子程序包含5个子程序，其主要功能是： （1） 子程序CXCY（E，L，IE，JE）的功能 用于计算各单元的杆件的长度及在结构坐标系中的倾角α的三角函数cosα、sinα。 （2） 子程序ELEA（E，L，IE，JE，A）的功能 用于计算结构坐标系下各单元刚度矩阵中的刚度系数。 （3） 子程序TOTAL（E，LNODE，KE，KZ）的功能 用于形成半带宽的结构原始刚度矩阵。 （4） 子程序FIFX（NP，FXI，FXJ，FYI，FYJ，MMI，MMJ，WL，IE，JE）的功能 它是用来计算各单元的等效节点荷载。 （5） 子程序STIFF（E，KE）的功能 (Book program consists of five sub-programs, and its main functions are: (1) subroutine CXCY (E, L, IE, JE) function The unit used to calculate the length of the bar and in the structure coordinates of the angle α of the trigonometric functions cosα, sinα. (2) subroutine ELEA (E, L, IE, JE, A) function Coordinate system used to calculate the structure of the element stiffness matrix stiffness. (3) subroutine TOTAL (E, LNODE, KE, KZ) function Used to form the structure of semi-bandwidth of the original stiffness matrix. (4) subroutine FIFX (NP, FXI, FXJ, FYI, FYJ, MMI, MMJ, WL, IE, JE) function It is used to calculate the equivalent nodal load of each unit. (5) subroutine STIFF (E, KE) function )

Mathematical methods of optimization and simulation, Development of mathematical model observation flight situation

计算小推力轨道转移时间最短优化程序，运行环境为MATLAB，最后在linux环境下运行(Calculate the shortest time low thrust orbit transfer optimization program, the operating environment for MATLAB, the final run in linux environment)

this is implementation huffman algorithm,you must try code. i think you must try.

本代码是光子晶体光纤切面的光强分布仿真程序，对搞光子晶体的同行很有帮助。(the code is photonic crystal fiber plane, the intensity distribution simulation program to engage in peer photonic crystal helpful.)

仿真SMI（DMI）算法性能，观察采样快拍数对波束图的影响，接收信号中不包含、包含信号功率逐渐加大对波束图的影响。(Simulation SMI (DMI) algorithm performance, the number of snapshots observed sampling effects on the beam diagram, the received signal does not contain, include the gradual increase in signal power diagram of the impact beam.)

This work involves in transmitting of intermediate frequency (IF) signal over fiber utilizing photonics frequency conversion.

Matlab code for computing the root(s) of a maximum likelihood function.