floyd

说明：  1.1 背包问题 有一个徒步旅行者，已知他能承受的旅行背包的重量不超过a（kg）。设有n种物品可供他选择装入背包，这n种物品分别编号为1，2，…，n。其中第i种物品每件的重量为ai（kg），其使用价值（指一件第i种物品对旅行者来说所带来的好处的一种数量指标）为ci（i＝1，2，…，n）。问这位旅行者应如何选择携带这n种物品的件数，使得总价值最大？ (1.1 knapsack problem is a hikers. he is known to travel to withstand the weight of the backpack not exceed a (kg). N Species with articles for his choice loaded backpack, n product were numbered 1, 2, ..., n. I first of which product each ai of the weight (kg), its value (i refers to a section of the types of items travelers the benefits brought by a number of indicators) for the ci (i = 1, 2, ..., n). Asked how travelers who choose to bring this product to the n pieces, making the total value of the largest?)

K-Means聚类算法 Matlab代码，内有程序注释。(K-Means Matlab)

运用西奥道生非定常气动力模型计算气动力，采用p-k法计算二元翼段的颤振临界速度(The aerodynamic force is calculated by the unsteady aerodynamic model of Theo road. The critical flutter velocity of the two element airfoil is calculated by the P-K method)

差分方程的蛛网模型，matlab的小例题，方便易懂，解释合理。(Cobweb model of the differential equation matlab example, convenient and easy to understand, explain and reasonable.)

利用3sigma法则判断并剔除粗大误差。使用matlab语言编程。(eliminate wrong data with three-sigma principle)

本源代码用来求解机床振动（时间-加速度）信号采集过后的数据，求出其平均幅值，并绘图(This source code is used to solve machine tool vibration (time)- acceleration signal after the acquisition of data, find out the average amplitude, and drawing )

说明：  一个JPA的学习资料。很适合初学者进行学习。对于初学者来说是个非常宝贵的资料。(A JPA of learning materials. Is suitable for beginners to learn. For beginners is a very valuable information.)

一个在MATLAB中实现的UKF算法用于目标追踪(tracking the target by UKF algorithm)

信号与系统实验：gibs现象、卷积、信号的运算、网络函数！(Signal and System Experiment: gibs phenomenon, convolution, signal operations, network function!)

噪声调相干扰信号的matlab仿真实现，其中包含成像的提取程序(sar jamming signal of noise moding phase)