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A new method for periodic scattering problems using 2nd kind boundary integral equations and the free-space Green s function, adding extra degrees of freedom on the unit cell walls, and imposing quasi-periodicity in an expanded linear system.(A new method for periodic scattering problems using 2nd kind boundary integral equations and the free-space Green s function, adding extra degrees of freedom on the unit cell walls, and imposing quasi-periodicity in an expanded linear system. This avoids the problems with the standard approach, namely: the quasi-periodic Green s function is slow to evaluate, it diverges at Wood s anomalies, and it does not handle large aspect ratios well. Our new approach cures all three issues, and can easily be `wrapped around an existing code (e.g. fast-multipole acceleration) for the isolated-obstacle scattering problem. It includes the latest talk slides: "A new integral representation for quasi-periodic scattering problems in two dimensions")

图论工具箱，包括图论的相关操作，求最短路径，搜索，匹配，最大流，核数等(matlab graph toolbox)

用CORDIC算法计算两点距离相当于matlab里的norm函数。经过验证，精度不错(Calculate distance between two points is equivalent to the norm in matlab function with CORDIC algorithm. After verification, the accuracy of a good)

分析了弹道仿真数学模型的特点、并以滑翔增程弹为例，详细研究了在M文件、simulink工具箱以及两者交互使用环境下建立外弹道质心运动系统仿真模型的方法和优缺点。 (Analysis of the ballistic characteristics of the mathematical model simulation and Gliding Range shells as an example, a detailed study of the M paper, simulink toolbox and use both interactive environment to establish external ballistics center of mass movement system simulation model and the advantages and disadvantages.)

扩频技术和cmda技术结合相结合进行通信系统的仿真(Cmda spread spectrum technology and communication technologies combining system simulation)

MATLAB求解转子动力学方程的状态矩阵的特征值，用在航空专业领域(Rotor dynamics equation solving state eigenvalues)

GPS单点定位程序，包括广播星历读取，计算卫星位置等功能。(GPS single point positioning procedures, including The broadcast ephemeris reading, calculate the satellite position.)

K-means聚类的matlab代码，供相关人士学习时参考(a K-means matlab source code)

谐波叠加法模拟随机风载荷，matlab写的程序，采用三角级数模拟时程风载荷(Superposition of harmonic pseudo random wind loads, matlab written procedures, when using trigonometric series simulate the way the wind load)

matlab代码大全，全面系统介绍基础matlab源代码(matlab commands of all kinds)