搜索结果: 1-11 共查到“物理学 MEI”相关记录11条 . 查询时间(0.125 秒)
非完整系统Tzénoff方程的Mei对称性所对应的一种新守恒量
非完整系统 Tzénoff方程 Mei对称性 新守恒量
2012/11/6
研究了非完整力学系统Tzénoff方程Mei对称性所对应的一种新守恒量,给出了这种守恒量的函数表达式和导致这种守恒量的判据方程.利用该方法比以往更易找到守恒量,最后举例说明了新结果的应用.
研究准坐标下一般完整系统Nielsen方程的Mei对称性导致的Mei守恒量.给出一般完整系统Nielsen方程的Mei对称性的定义和判据,讨论一般完整系统Nielsen方程Mei对称性直接导致的Mei守恒量的条件及Mei守恒量的形式,并举例说明结果的应用.
用MEI方法研究脉冲线源辐射问题
脉冲辐射 FDTD方法 MEI方法
2009/1/8
脉冲线电流源的辐射问题是研究高功率微波辐射、传播和散射问题的基础。用时域有限差分方法结合时域MEI吸收边界条件来对该问题进行求解，通过与不同种类边界条件配合得出的数值解的比较可以证明，利用时域MEI方法的一阶吸收边界条件对线源辐射问题进行处理时，可以使截断边界离源更近，从而减少了计算量，并达到提高计算精度的目的。
完整系统Appell方程Mei对称性的结构方程和Mei守恒量
Appell方程 Mei对称性 结构方程 Mei守恒量
2012/11/8
研究完整系统Appell方程Mei对称性的结构方程和Mei守恒量.建立完整系统的Appell方程和系统的运动微分方程;在群的无限小变换下,给出完整系统Appell方程Mei对称性的定义和判据;得到用Appell函数表示的完整系统Appell方程Mei对称性的结构方程和Mei守恒量的表达式.举例说明结果的应用.
Perturbation and Adiabatic Invariants of Mei Symmetry for
Nonholonomic Mechanical Systems
Mei symmetry perturbation adiabatic invariant nonholonomic mechanical system
2007/8/15
2007Vol.47No.4pp.594-596DOI:
Perturbation and Adiabatic Invariants of Mei Symmetry for
Nonholonomic Mechanical Systems
DING Ning, FANG Jian-Hui, and WANG Peng
College of...
Noether-Mei Symmetry of Mechanical System in Phase Space
Noether-Mei symmetry conserved quantity mechanical system phase space
2007/8/15
2006Vol.45No.5pp.882-884DOI:
Noether-Mei Symmetry of Mechanical System in Phase Space
FANG Jian-Hui, WANG Peng, and DING Ning
College of Physical Science and Technology...
Mei Symmetry and Lie Symmetry of the Rotational Relativistic
Variable Mass System
rotational relativity variable mass system Mei symmetry Lie
symmetry conserved quantity
2007/8/15
2003Vol.40No.3pp.269-272DOI:
Mei Symmetry and Lie Symmetry of the Rotational Relativistic
Variable Mass System
FANG Jian-Hui
Department of Applied Physics, University o...
A New Conservation Law Derived from Mei Symmetry for the System
of Generalized Classical Mechanics
system of generalized classical mechanics Mei symmetry conservation law
2007/8/15
2004Vol.42No.6pp.899-902DOI:
A New Conservation Law Derived from Mei Symmetry for the System
of Generalized Classical Mechanics
ZHANG Yi
Department of Civil Engineering,...
Mei Symmetry and Lie Symmetry of Relativistic
Hamiltonian System
relativity Hamiltonian system Mei symmetry Lie
symmetry conserved quantity
2007/8/15
2004Vol.42No.1pp.19-22DOI:
Mei Symmetry and Lie Symmetry of Relativistic
Hamiltonian System
FANG Jian-Hui, YAN Xiang-Hong, LI Hong, and CHEN Pei-Sheng
College of Phys...
Mei Symmetry and Noether Symmetry of the Relativistic Variable Mass System
relativity variable mass system Mei symmetry Noether
symmetry conserved quantity relativistic variable mass system
2007/8/15
2004Vol.41No.3pp.349-352DOI:
Mei Symmetry and Noether Symmetry of the Relativistic Variable Mass System
FANG Jian-Hui
Department of Applied Physics, University of Petrol...
研究Chetaev型约束力学系统Appell方程的Mei对称性和Mei守恒量.建立Chetaev型约束力学系统的Appell方程和系统的运动微分方程;分析Lagrange函数和A函数的关系;讨论Chetaev型约束力学系统Appell方程的Mei对称性和Mei守恒量的一般研究方法;在群的无限小变换下,给出Appell方程Mei对称性的定义和判据;得到Mei对称性的结构方程以及Mei守恒量的表达式....