bamu

基于Python编写的用于曲线拟合，最小二乘法(Based on Python for curve fitting, least squares method.)

说明：  模糊C均值聚类，matlab程序，FCM(Fuzzy c-means clustering, matlab program, FCM)

微波仿真论坛下载的一位版主的稿子，有图有例子，手把手教你学习关于CST中的高级语言设计(CST-VBA,The CST STUDIO SUITE tools can be controlled from a Visual Basic (VBA) script. The language of the built in BASIC interpreter is almost 100% compatible with the Visual Basic for Application language. This language may be used either for creating own structure libraries or for the automation of common tasks)

ABAQUS中用户材料子程序UMAT的开发主要解决两方面的问题：本构模型的建立和积分算法的选择。 本文主要研究非线性材料的UMAT实现方法，并重点研究其迭代算法部分，目前，用户材料子程序UMAT的迭代算法主要是常刚度法，常刚度法的优点在于算法原理较简单，程序编写较方便，缺点是当遇到复杂非线性材料时，其迭代次数较多，收敛速度也较慢，在这个情况下，本文采取的是一种迭代次数较少且收敛速度较快的切线刚度法，具体就是采用FORTRAN语言编制了基于Von-Mises模型的接口程序,并采用切线刚度算法，通过与ABAQUS自带本构关系计算的结果相比较，验证其正确性。(This paper studies the user subroutine UMAT of ABAQUS development methods, the use of FORTRAN language isotropic hardening material model of the interface program, studied the effects of such material is extremely elastic-plastic constitutive relation method. This article UMAT tightly around the secondary development of technology, the first principle of its interface detail, and then for the theory of nonlinear finite element incremental stiffness of the regular tangent stiffness method and the theory of algorithms to do an in-depth analysis of deduced a regular tangent stiffness and rigidity of the law of the specific expression of algorithm theory, and then the preparation of the two algorithms, respectively, of the UMAT program, and finally the establishment of a specific model checking, bringing with ABAQUS elasto-plastic constitutive relation of the calculated results compared to verify the correctness of the two.)

电容层析成像的landweber算法演示程序，并有详细的说明。(The capacitive tomography of the landweber algorithm demonstrates the program and has a detailed description.)

网上看到很多关于矩阵求逆运算的代码，都很杂很乱，我把代码重新真理了一边，可以直接编译运行(See a lot of online matrix inversion code, very complex mess, I put the code back to the side of truth, you can directly compile and run)

计算由样本矩阵X及其标签列向量label得到的csp投影矩阵 (calculate csp matrix )

fft变换后求出主频，FFT transform to calculate frequency

莱斯大学一位大牛的带l1范数的目标函数求解的程序，包含多种比较方法， 非常适合优化计算研究，与图形图像优化求解问题等。(Rice University with a large cattle l1 norm objective function to solve the program contains multiple comparison method is very suitable for optimum calculation of the graphic image optimization problem.)

最新的关于贝叶斯聚焦算法IEEE文章。该算法通过利用信号DOA概率密度函数实现加权的阵列波前差值法，能实现宽带相干信号的DOA估计，并能减小阵列聚焦误差，提高宽带阵列频域波束形成鲁棒性。(In this paper, we present and study a Bayesian focusing transformation (BFT) for coherent wideband array processing, which takes into account the uncertainty of the direction of arrivals (DOAs). The Bayesian focusing method minimizes the mean-square error of the transformation over the probability densityfunctions(pdfs)oftheDOAs,thusachievingimprovedfocusing accuracy over the entire bandwidth)