Fourth-order-Runge-Kutta-method

我自己用c语言写的64点基4FFT算法，在visual c++ 6.0环境下编译通过。同matlab结果一致。(My own use C language to write the 64 based 4FFT algorithm, in visual c++ 6 compiler environment through. Results consistent with matlab.)

Fractional knapsack problem, Greedy algorithm

说明：  该LINGO程序的功能是：求出工程项目的收益的净现值和每道工序的最优开工时间，约束条件是紧前紧后约束，以及资源约束。。。(The program' s function is LINGO: the project proceeds to derive the net present value of each procedure and the optimal start time constraints are tight after the former tight constraints, and resource constraints. . .)

说明：  本实验是利用卡尔曼滤波器实现一维匀加速运动的轨迹跟踪。卡尔曼滤波是一种时域滤波方法，它采用状态空间方法描述系统，算法采用递推机制，数据存储量小，在导航领域有成功的应用。(This experiment is the use of Kalman filter to achieve a one-dimensional constant acceleration of the trajectory tracking. Kalman filter is a time-domain filtering method, which uses state-space description of systems, algorithms using recursive mechanisms, data storage a small amount of success in the navigation area of the application.)

介绍MAPLE使用方法的书籍。网上关于maple的指导书很少，这个是不错的了。对初学者来说可以迅速上手，我当时就是因为临时需要才学的，边学边用，很快就上手了。(An introductory book of MAPLE, published in 2007. Easy to understand and use. Suitable for beginners and amateurs.)

通过对钢轨和车轮的ansys有限元建模，分析在钢轨的接头处的动力学特性。(Rail and wheel ansys finite element modeling, analysis of the dynamics of the rail joints.)

合成孔径雷达（SAR)目标成像仿真，多姿态，多角度，有不同光照,小波包分析提取振动信号中的特征频率。( Synthetic Aperture Radar (SAR) imaging simulation target, Much posture, multi-angle, have different light, Wavelet packet analysis to extract vibration signal characteristic frequency.)

crackprop_modeI_lefm_xfem_cpe4，ABAQUS基于线弹性断裂力学的扩展有限元法实例。(crackprop_modeI_lefm_xfem_cpe4 ABAQUS based on linear elastic fracture mechanics extended finite element method instance.)

matlab求解变系数双曲方程，使用迎风格式(matlab solves the hypolic equation using upwind method)

传输矩阵法模拟光子晶体的模拟程序，好用，特别对于研究人员！(transfer matrix method photonic crystal simulation and the simulation and ease of use, especially for researchers!)