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901.
V. G. Alekseev 《Journal of Mathematical Sciences》1991,53(1):1-5
Estimates are given for the bispectral densities of stationary random processes. Two models of stationary random processes with discrete time are considered. It is shown that for both models conditions hold under which one can construct a consistent estimate of the bispectral density.Translated fromTeoriya Sluchaínykh Protsessov, Vol. 14, pp. 3–7, 1986. 相似文献
902.
V. K. Mel'nikov 《Communications in Mathematical Physics》1991,137(2):359-381
It is shown that the nonlinear Schroedinger equation with a self-consistent source admits investigation by the inverse scattering method for the Dirac operator. The conditions are found under which the solutions of the nonlinear Schroedinger equation with a self-consistent source describe the creation and annihilation of solitons. 相似文献
903.
904.
All the symmetries and conservation laws of Navier-Stokes equations are calculated. 相似文献
905.
V. A. Shlyk 《Ukrainian Mathematical Journal》1989,41(3):361-364
Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 41, No. 3, pp. 408–412, March, 1989. 相似文献
906.
907.
Yu. V. Vandakurov 《Technical Physics》2003,48(3):298-302
In rotating stellar convective zones, heat transfer is shown to be associated with unbalanced azimuth forces arising in the
radially ascending (heated) or descending (cold) matter. The presence of a longitude-dependent magnetic field generates additional
azimuth forces, hence, new ways of compensating for the unbalanced forces. Generally speaking, this magnetic field is variable
but may be nearly static in layers where convective equilibrium is replaced by radiative equilibrium. The condition for the
coexistence of the static and usual fields is derived. To this end, an axisymmetric azimuth magnetic field of energy comparable
to the energy of rotation should be introduced into models under consideration. In such configurations, conditions for magnetic
field generation, as in the Sun, may appear. 相似文献
908.
V. Shatokhin T. Wellens C. A. Müller A. Buchleitner 《The European physical journal. Special topics》2007,151(1):51-57
We survey recent progress achieved in understanding the
impact of inelastic processes on coherent backscattering of light
from cold atoms that are saturated by a powerful laser field. 相似文献
909.
Makarov V. V. Ksandopulo G. I. Potekhin V. M. 《Russian Journal of Applied Chemistry》2003,76(1):132-136
The parameters of fuel oil pyrolysis initiated by propane-butane-oxygen flame were studied as influenced by the temperature in the pyrolysis zone, time of the fuel oil contact with the initiating flame, and fuel oil feed rate. The experimental data on thermal and flame-initiated fuel oil pyrolysis were compared. 相似文献
910.
T. V. Ramakrishnan H. R. Krishnamurthy S. R. Hassan G. Venketeswara Pai 《Journal of Chemical Sciences》2003,115(5-6):767-774
Manganites of the LA1−x
Ca
x
MnO3 family show a variety of new and poorly understood electronic, magnetic and structural effects. Here we outline a new approach
recently proposed by us, where we argue that due to strong Jahn-Teller (JT) coupling with phonons the twofold degeneratee
g
states at the Mn sites dynamically reorganize themselves into localised, JT polaronsl with exponentially small inter-site hopping, and band-like, nonpolaronic statesb, leading to anew 2-band model for manganites which includes strong Coulomb and Hund’s couplings. We also discuss some results from a dynamical mean-field theory treatment
of the model which explains quantitatively a wide variety of experimental results, including insulator-metal transitions and
CMR, in terms of the influence of physical conditions on the relative energies and occupation of thel andb states. We argue that this microscopic coexistence of the two types of electronic states, and their relative occupation and
spatial correlation is the key to manganite physics.
Dedicated to Professor C N R Rao on his 70th birthday 相似文献