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141.
In the Reznitskaya transform combining the solutions of some general linear partial differential equations of hyperbolic type and parabolic type, isometrical identities and inversion formulas are established. Furthermore, stability of Lipschitz type in the determination of initial heat distribution is given as an application. 相似文献
142.
This article was processed by the author using the Springer-Verlag TEX QPMZGHB macro package 1991. 相似文献
143.
144.
In this paper we prove that, ifK is a closed subset ofW
0
1,p
(Ω,R
m
) with 1<p<+∞ andm≥1, thenK is stable under convex combinations withC
1 coefficients if and only if there exists a closed and convex valued multifunction from Ω toR
m
such that
The casem=1 has already been studied by using truncation arguments which rely on the order structure ofR (see [2]). In the casem>1 a different approach is needed, and new techniques involving suitable Lipschitz projections onto convex sets are developed.
Our results are used to prove the stability, with respect to the convergence in the sense of Mosco, of the class of convex
sets of the form (*); this property may be useful in the study of the limit behaviour of a sequence of variational problems
of obstacle type.
This article was processed by the author using the Springer-Verlag TEX mamath macro package 1990 相似文献
145.
146.
147.
Gianni Dal Maso 《Annali di Matematica Pura ed Applicata》1981,129(1):327-366
Summary In this paper we study the asymptotic behaviour (as h) of the solutions of minimum problems for the functional [¦Du¦2+g(x, u)]dx with bilateral obstacles of the type huh, where h and h are sequences of arbitrary functions fromR
n into ¯R. 相似文献
148.
Giovanni Giambene Iago Gomez Tomaso de Cola Roshith Sebastian MD Saifur Rahman 《International Journal of Satellite Communications and Networking》2023,41(2):102-121
VHF data exchange system (VDES) is an emerging maritime communications standard that is meant to provide ship-to-shore, shore-to-ship, and ship-to-ship information services. VDES also includes a satellite component to extend the service coverage also to the high sea. Ships can receive important information via VDES and access this service via satellite when they are far from the shore. This paper uses data taken during a measurement campaign to develop an ON-OFF model for the VDE-SAT downlink channel taking the multipath effects caused by sea reflections into account. This model has been used to evaluate the impact of packet-level forward error correction (FEC) schemes (i.e., ideal codes, RaptorQ codes, and 2-Dimension Reed-Solomon codes) to further protect transmissions from deep fading events and to evaluate the impact at the transport level considering the possibility to adopt the transmission control protocol (TCP) for a file map delivery service. 相似文献
149.
150.
This paper is devoted to the autonomous Lagrange problem of the calculus of variations with a discontinuous Lagrangian. We
prove that every minimizer is Lipschitz continuous if the Lagrangian is coercive and locally bounded. The main difference
with respect to the previous works in the literature is that we do not assume that the Lagrangian is convex in the velocity.
We also show that, under some additional assumptions, the DuBois—Reymond necessary condition still holds in the discontinuous
case. Finally, we apply these results to deduce that the value function of the Bolza problem is locally Lipschitz and satisfies
(in a generalized sense) a Hamilton—Jacobi equation. 相似文献