Deblurring-Book-by-Hansen

用于1维曲线的分形维数计算，利用的是盒维数算法(one-dimensional curve for the fractal dimension is calculated using the box dimension algorithm)

- Stone column play important role in infrastructure, improving soft soil. The behaviour of stone column, however, remains far well understood

形态学的膨胀，腐蚀，细化的MATLAB的源代码，对初学者有用(Morphological expansion, corrosion, thinning of MATLAB source code, useful for beginners)

提出了一种求解电磁场有限元 边界元混合法所生成的线性方程组的有效方法 ———内观 法结合多波前法.由于该线性方程组的系数是一个部分稀疏部分满填充的矩阵,为了加速求解,应用内观法将系数矩阵分为 2块,一块是有限元法形成的稀疏矩阵,另一块是边界元法生成的满阵,然后用多波前法求解稀疏矩阵方程,用高斯 约当消去法解满阵方程. 采用该方法,计算了二维多层介质柱体的雷达散射截面.计算结果表明,该方法的计算效率远远高于传统的高斯法.(Proposed for solving mixed finite element boundary element linear equations generated by an effective method of Vipassana--- a combination of multi wave front method. Since the coefficients of linear equations is a part of the sparsely populated part of the full matrix, in order to speed up the solution, application of Vipassana coefficient matrix is ​ ​ divided into two, one is the finite element method for the formation of the sparse matrix, the other is the boundary element method generates the full array, and then use the multifrontal method for solving sparse matrix equation Gauss Jordan elimination method with full matrix equation solution. use this method to calculate the two-dimensional multi-layer dielectric cylinder of the radar cross section. The results show the computational efficiency of this method is much higher than the traditional Gaussian law.)

矩量法分析 半波阵子天线 电流分布 方向图(mom dipole current distrubution pattern simulation )

离散系统的MATLAB实现。学习利用matlab求解系统频率响应的方法；学习利用matlab求解系统输出响应的方法； (MATLAB realization of discrete systems. Learning methods for solving systems using matlab frequency response learning methods for solving systems using matlab output response )

说明：  这是基于matlab软件编写的开发型代码(this is a program)

求矩阵特征值和特征向量的算法：QR算法。用于线性方程组的求解，和反幂法算法的设计(Matrix eigenvalues and eigenvectors of the algorithm: QR algorithm. For linear equations, and anti-power-law algorithm design)

matlab符号计算，包括符号类型的创建、使用、任意精度数学计算、微积分等等重要方法，值得借鉴！(Matlab symbolic computation, including the types of symbols to create, use, arbitrary precision arithmetic Calculus, etc. important method, which is worth learning from.)

channel flow computation