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dcccccc
电磁场
向量分析与场论基础
《向量分析与场论基础》就是关于场的数学刻画、描述以及场特征的一般分析。在本概要中，为简明区分向量与标量起见，向量一律采用黑、斜体。
(vector analysis and electromagnetic field theory based "vector analysis and field theory foundation" is on the mathematical characterization. and the description of the general characteristics of the market analysis. In the outline for concise distinction between vector and scalar sake, vector will be used black, in italics.)
- 2007-03-12 21:21:12下载
- 积分：1
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arithmetic
arithemetic code on visual c++
- 2009-12-20 18:53:54下载
- 积分：1
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共轭梯度法
说明： 共轭梯度法（Conjugate Gradient）是介于最速下降法与牛顿法之间的一个方法，它仅需利用一阶导数信息，但克服了最速下降法收敛慢的缺点，又避免了牛顿法需要存储和计算Hesse矩阵并求逆的缺点，共轭梯度法不仅是解决大型线性方程组最有用的方法之一，也是解大型非线性最优化最有效的算法之一。 在各种优化算法中，共轭梯度法是非常重要的一种。其优点是所需存储量小，具有步收敛性，稳定性高，而且不需要任何外来参数。(Conjugate gradient method Gradient) is a method between the steepest descent method and Newton's method. It only uses the first derivative information, but overcomes the disadvantage of slow convergence of steepest descent method, and avoids the disadvantage of storing and calculating Hesse matrix and solving inverse of Newton's method. Conjugate gradient method is not only one of the most useful methods to solve large-scale linear equations, but also the most effective method to solve large-scale nonlinear optimization One of the algorithms of. Among all kinds of optimization algorithms, conjugate gradient method is very important. It has the advantages of small storage, step convergence, high stability and no external parameters.)
- 2020-06-27 15:46:08下载
- 积分：1
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COMSOLMultiphysics(1)
COMSOL_Multiphysics基本操作指南和常见问题解答，非常有助于帮助使用有限元建模的朋友！(COMSOL_Multiphysics basic instructions and FAQs, very helpful in helping friends using finite element modeling!)
- 2013-06-09 11:32:35下载
- 积分：1
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SwarmOpsMatlab1_1
说明： 该蠕变子程序能够进行高温长时间应力下的应力应变分析以及松弛行为(The creep subroutine can be used for stress-strain analysis and relaxation behavior under high temperature and long time stress)
- 2020-02-28 10:07:57下载
- 积分：1
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TEST
基于matlab的对光学设计里像差测量和校正的程序(Matlab aberration measurement of the optical design and calibration procedures)
- 2020-10-28 17:39:57下载
- 积分：1
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fdtd3D_UPML
学习如何设置UPML吸收边界的3-D FDTD程序.对于初学者很有帮助(Learn how to set up UPML absorbing boundary of the 3-D FDTD procedure. Very helpful for beginners)
- 2008-04-11 22:20:36下载
- 积分：1
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Learn R for Applied Statistics
说明： Do you need to gain confidence with handling numbers and formulae? Do you want a clear, step-by-step guide to the key concepts and principles of statistics? Nearly all aspects of our lives can be subject to statistical analysis. Statistics: An Introduction shows you how to interpret, analyze and present figures.
Assuming minimal knowledge of maths and using examples from a wide variety of everyday contexts, this book makes often complex concepts and techniques easy to get to grips with. This new edition has been fully updated.
Whether you want to understand the statistics that you are bombarded with every day or are a student or professional coming to statistics from a wide range of disciplines, Statistics: An Introduction covers it all.
- 2020-06-22 22:20:01下载
- 积分：1
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Usermat
说明： umat abaqus plasticity
- 2020-06-20 02:20:02下载
- 积分：1
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cvf_rter
Compaq Visual Fortran Error Messages，对于利用CVF编程的programmer是本很好的对照手册。(Compaq Visual Fortran Error Messages, programming, programmer for the use of CVF is a very good control of the manual.)
- 2011-05-23 11:52:50下载
- 积分：1
