状态模式-工作状态03

说明：  简单的爬虫实例,通过各种方式从商品网站上爬取各种不同的信息，主要用于练习爬虫的应用，更加熟悉爬虫的应用(A simple crawler instance that crawls a variety of different information from a product website in a variety of ways, mainly for practicing reptile applications and more familiar with reptile applications.)

2019强网杯write up（难度较大）.doc

最简单获取主板,cpu型号的方法-access to the most simple motherboard, cpu type of method

产生一个高斯信号的脉冲成型的matlab程序(A pulse shaping matlab program that generates a Gauss signal)

单级齿轮传动系统非线性动力学分析相关程序，分叉图、庞加莱图(Nonlinear dynamics analysis of single stage gear drive system related procedures, bifurcation diagram, poincare diagram)

说明：  i2c module，有i2c主机和从机模块(i2c module verilog VHDL base on i2c protocol)

使用空间光调制器调制高斯光场的matlab程序(Modulation of Gauss light field using spatial light modulator)

说明：  实现大型轴系的扭转振动频率测量，可以很好的实现监控与预警(Realize the torsional vibration frequency measurement of large shafting, which can realize monitoring and early warning.)

采用CG法求解稀疏对称奇异矩阵得到的Ax=b(Implementation of a conjugate-gradient type method for solving sparse linear equations: Solve Ax = b or (A- sI)x = b. The matrix A- sI must be symmetric but it may be definite or indefinite or singular. The scalar s is a shifting parameter – it may be any number. The method is based on Lanczos tridiagonalization. You may provide a preconditioner, but it must be positive definite. )

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