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161.
A new model shift mapping was given in bilateral symbol space. It istopologically conjugate with the traditional shift mapping. Similar to Smale Horseshoe, amodel was constructed correspondent to the model shift mapping, i. e., a class of mappingon Mobius strip was given. Its attractors' structure and dynamical behaviour weredescribed. 相似文献
162.
近年来,由于激光及微波技术的迅速发展,汤姆逊散射已日益广泛地用于等离子体的诊断,辐射散射理论也日益引起广泛的兴趣。 试探粒子模型用于计算等离子体散射谱时可以引入两个假设:试探粒子在背景粒子作 相似文献
163.
Ilya Ya. Goldsheid 《Probability Theory and Related Fields》2008,141(3-4):471-511
The main goal of this work is to study the asymptotic behaviour of hitting times of a random walk (RW) in a quenched random
environment (RE) on a strip. We introduce enlarged random environments in which the traditional hitting time can be presented as a sum of independent random variables whose distribution functions
form a stationary random sequence. This allows us to obtain conditions (stated in terms of properties of random environments)
for a linear growth of hitting times of relevant random walks. In some important cases (e.g. independent random environments)
these conditions are also necessary for this type of behaviour. We also prove the quenched Central Limit Theorem (CLT) for
hitting times in the general ergodic setting. A particular feature of these (ballistic) laws in random environment is that,
whenever they hold under standard normalization, the convergence is a convergence with a speed. The latter is due to certain
properties of moments of hitting times which are also studied in this paper. The asymptotic properties of the position of
the walk are stated but are not proved in this work since this has been done in Goldhseid (Probab. Theory Relat. Fields 139(1):41–64,
2007).
相似文献
164.
This paper considers a flexible class of omnibus affine invariant tests for the hypothesis that a multivariate distribution is symmetric about an unspecified point. The test statistics are weighted integrals involving the imaginary part of the empirical characteristic function of suitably standardized given data, and they have an alternative representation in terms of an L2-distance of nonparametric kernel density estimators. Moreover, there is a connection with two measures of multivariate skewness. The tests are performed via a permutational procedure that conditions on the data. 相似文献
165.
166.
Kuan-Ju Chen 《Journal of Mathematical Analysis and Applications》2006,319(2):841-862
In this paper, we study the existence of positive solutions of some nonlinear elliptic problems in unbounded domains. The existence is affected by the properties of the geometry and the topology of the domain. 相似文献
167.
168.
G. S. Balashova 《Mathematical Notes》1997,62(6):688-696
In the Sobolev infinite-order space on a multidimensional strip region we obtain conditions for the existence of a function
that, together with all its derivatives, assumes prescribed values on the boundary. An example shows that the sufficient conditions
for the trace continuation obtained in the present paper have a significant advantage over those obtained earlier. Furthermore,
for spaces of some special type our conditions for trace continuation are both sufficient and necessary.
Translated fromMatematicheskie Zametki, Vol. 62, No 6, pp. 820–830, December, 1997
Translated by M. A. Shishkova 相似文献
169.
170.
土壤-水稻系统中砷污染表征与相关性校验 总被引:3,自引:0,他引:3
研究了青紫泥田、黄筋泥田和红砂田中水溶性砷、酸溶性砷和总砷与水稻生物产量和砷积累的关系,探讨了它们之间的相关性,为表征和校验土壤水稻系统中砷污染提供依据。 相似文献