newton_method

ICA梯度下降算法，里面包含了数据用来验证梯度下降算法的实现过程。对ICA的具体算法有清楚的了解。(ICA gradient descent algorithm, which contains the data used to verify the gradient descent algorithm implementation process. Have a clear understanding of the specific algorithms of ICA.)

This is a toolbox for computing ODEs or PDEs in BVPs using FEM in 1D, 2D and 3D.( This is a toolbox for computing ODEs or PDEs in BVPs using FEM in 1D, 2D and 3D. * FEM1)

tutorial to mathcad 15

来波信号入射角度对于MIMO天线接收信号空域相关性的影响(the effect of space correlations on MIMO accepting attenna signal for coming signal angle)

将数字信号转换为模拟信号的电路称为数模转换器（d/a转换器或dac）(digital to analog converter)

这是一个使用背靠背式PWM转换器提供隔离负载的变速翼式涡轮双馈感应发电机(This is a back-to-back PWM converter provides isolation load variable speed wing turbine doubly fed induction generator)

使用MATLAB对MIMO系统进行辨识，其中有各种算法仿真算例，N4SID，针对多变量系统的一种识别算法(MOESP (Multivariable Output-Error State sPace) is a deterministic method to identify linear time invariant systems. The MOESP method developed by M. Verhaegen and P. Dewilde is based on the LQ decomposition of Hankel matrix formed from input-output data, where L is lower triangular and Q is orthogonal. A Singular Value Decomposition (SVD) can be performed on a block from the L (L22) matrix to obtain the system order and the extended observability matrix. From this matrix it is possible to estimate the matrices C and A of state-space model. The final step is to solve overdetermined linear equations using the least-squares method to calculate matrices B and D.)

有效观察OAM的相位模式，可自由设定拓扑荷数(Observing the phase mode of OAM effectively, the topological charge can be set freely.)

SAP2000软件的源程序，带有实例，可以进行静力分析、振型分析、反应谱分析、时程分析、曲屈分析、移动荷载分析、稳态分析、功能谱密度分析、静力Pushover分析、施工顺序加载分析等。(SAP2000 software source code, with examples, can be static analysis, modal analysis, response spectrum analysis and time history analysis, buckling analysis, moving load analysis, steady-state analysis, spectral density function analysis, static Pushover analysis, construction sequence load analysis.)

线形阵列天线的自适应波束形成SMI SLC LMS 圆环形阵列的三维方向图(Adaptive beam forming a three-dimensional linear array antenna pattern SMI SLC LMS annular array)