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111.
王芳华 《数学的实践与认识》2007,37(10):102-106
通过对单纯形法的分析和研究,提出了一种简易的单纯形表,并利用矩形法则进行计算而得到一种改进的单纯形法.结果表明该法简单易行,并减少了计算量和存储量. 相似文献
112.
M. A. Grechkoseeva 《Siberian Mathematical Journal》2007,48(1):73-75
We prove that the nonisomorphic simple groups B
n
(q) and C
n
(q) have different sets of element orders.
Original Russian Text Copyright ? 2007 Grechkoseeva M. A.
__________
Translated from Sibirskiĭ Matematicheskiĭ Zhurnal, Vol. 48, No. 1, pp. 89–92, January–February, 2007. 相似文献
113.
Klaus DENECKE 《中国科学A辑(英文版)》2007,50(5):715-726
Let G be a finite group and S be a finite simple group. In this paper, we prove that if G and S have the same sets of all orders of solvable subgroups, then G is isomorphic to S, or G and S are isomorphic to Bn(q), Cn(q), where n≥3 and q is odd. This gives a positive answer to the problem put forward by Abe and Iiyori. 相似文献
114.
三线摆振动周期与角振幅的关系 总被引:2,自引:0,他引:2
本根据机械能守恒定律推出了三线摆的振动周期和角振幅的关系,并据该关系式讨论了角振幅对周期的影响以及角振幅的确定。 相似文献
115.
It is proved that if L is one of the simple groups 3D4(q) or F4(q), where q is odd, and G is a finite group with the set of element orders as in L, then the derived subgroup of G/F(G) is
isomorphic to L and the factor group G/G′ is a cyclic {2, 3}-group.
__________
Translated from Algebra i Logika, Vol. 44, No. 5, pp. 517–539, September–October, 2005.
Supported by RFBR grant No. 04-01-00463. 相似文献
116.
We investigate the effects of temperature and density on the single-particle and many-particle coefficients as well as on
the structures of homogenous systems in which the particles are assumed to interact via a continuous soft sphere potential
in the microcanonical ensemble. The pair distribution function and therefore the structures of the systems studied are affected
by temperature close to and above the melting point through migrations of atoms from the first shell in the pair distribution
function.
The dynamics of atomic pairs in the short-time regime in liquid aluminium may be said to be governed by the potential of mean
force, which depends on the static structure of liquid Al at all investigated temperatures. A polynomial dependence ofD on density and temperature was observed in contradiction to Arrhenius law. The shear viscosities of the systems studied are
largely nonlinear. It was observed that the soft sphere potential used in our calculations overestimates the Stoke-Einstein
relation. 相似文献
119.
The effect of the type of springs on the equilibrium states of an inverted pendulum is examined. The angular and linear eccentricities
of the follower force are taken into account
__________
Translated from Prikladnaya Mekhanika, Vol. 43, No. 6, pp. 126–137, June 2007. 相似文献
120.
L. G. Lobas 《International Applied Mechanics》2005,41(6):587-613
The results from studies of the dynamic behavior of a double pendulum under the action of a follower force are analyzed. It
is pointed out that bifurcations and catastrophes of equilibrium states may occur at some values of the parameters. Differential
equations are presented which describe the plane-parallel motion of a pendulum with an arbitrary number of links and angular
and linear eccentricities of the follower force whose orientation depends on one parameter. The basic problems of dynamics
of pendulums with different number of links are formulated
__________
Translated from Prikladnaya Mekhanika, Vol. 41, No. 6, pp. 3–35, June 2005. 相似文献