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118nodes
大规模配电网118节点的潮流计算程序,辐射状网络,含原始数据。(Large-scale distribution network 118 nodes of the power flow calculation procedures, radial network, with the original data.)
- 2021-02-01 15:50:00下载
- 积分:1
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Mohr-Coulomb
fortran 写的摩尔库伦本构模型,供写材料umat的人参考(fortran write the molar Coulomb constitutive model for people to write reference materials umat)
- 2021-04-15 19:38:54下载
- 积分:1
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matinv
说明: 矩阵求逆,使用fortran语言编写,希望能对有需要的朋友有所帮助(Matrix inversion, written in FORTRAN language, hoping to help friends in need)
- 2020-12-11 17:49:18下载
- 积分:1
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w
说明: 任意给定一个M进制的数X,利用栈实现数值转换。(Given an arbitrary number of M band X, use the stack to achieve numerical conversion.)
- 2010-07-06 10:32:10下载
- 积分:1
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ooptest
C++实现的FFT,详细,简单,内含多个测试类(using C++ implements fft,including serials class)
- 2013-12-12 23:22:05下载
- 积分:1
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PCA算法程序 pca
PCA算法程序设计步骤:
1、去均值
2、计算协方差矩阵及其特征值和特征向量
3、计算协方差矩阵的特征值大于阈值的个数
4、降序排列特征值
5、去掉较小的特征值
6、去掉较大的特征值(一般没有这一步)
7、合并选择的特征值
8、选择相应的特征值和特征向量
9、计算白化矩阵
10、提取主分量
(PCA algorithm programming steps: 1 to mean 2, calculation of covariance matrix and its eigenvalues and eigenvectors 3, the calculation of covariance matrix eigenvalues greater than the threshold number of 4, in descending order of eigenvalue 5, remove the smaller eigenvalue 6, remove the larger eigenvalue (usually not this step) 7, the combined choice of eigenvalues 8, select the appropriate eigenvalues and eigenvectors 9, computing whitening matrix 10, principal component extraction)
- 2021-03-09 13:09:27下载
- 积分:1
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稀疏矩阵标准答案
经典矩阵运算问题求解(classic problem solving matrix operations)
- 2005-03-10 14:05:21下载
- 积分:1
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Neandla
计算牛顿和拉格朗日插值方法,用户输入插值结点(calculated Newton and Lagrange interpolation methods, user input interpolation nodes)
- 2007-05-13 12:33:16下载
- 积分:1
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poly
求两个多项式的最大公约式,多项式按照如下格式输入,如果输入
3 //次数
1 2 3 4 //系数
则表示
1+2x+3x^2+4x^3(For two of the largest convention-type polynomials, polynomial input in accordance with the following format, if you type 3// number 1 2 3 4// coefficient express 1+ 2x+ 3x ^ 2+ 4x ^ 3)
- 2008-05-16 18:44:14下载
- 积分:1
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pdesolve
偏微分方程数值解法的程序包,包括拉普拉斯方程、对流方程和扩散方程的各种解法(Numerical Solution of Partial Differential Equations package, including the Laplace equation, convection-diffusion equation equation and the various solution)
- 2009-03-22 19:39:32下载
- 积分:1