Results 11 to 20 of about 98 (89)

Holmstedt's formula for the K‐functional: the limit case θ0=θ1$\theta _0=\theta _1$

open access: yesMathematische Nachrichten, Volume 296, Issue 12, Page 5474-5492, December 2023., 2023
Abstract We consider K‐interpolation spaces involving slowly varying functions, and derive necessary and sufficient conditions for a Holmstedt‐type formula to be held in the limiting case θ0=θ1∈{0,1}$\theta _0=\theta _1\in \lbrace 0,1\rbrace$. We also study the case θ0=θ1∈(0,1)$\theta _0=\theta _1\in (0,1)$.
Irshaad Ahmed   +2 more
wiley   +1 more source

The resource constrained clustered shortest path tree problem: Mathematical formulation and Branch&Price solution algorithm

open access: yesNetworks, Volume 81, Issue 2, Page 204-219, March 2023., 2023
Abstract In this article, the Resource Constrained Clustered Shortest Path Tree Problem is defined. It generalizes the classic Resource Constrained Shortest Path Tree Problem since it is defined on an undirected, complete and weighted graph whose set of nodes is partitioned into clusters.
Daniele Ferone   +3 more
wiley   +1 more source

30 Years of space–time covariance functions

open access: yesWIREs Computational Statistics, Volume 13, Issue 2, March/April 2021., 2021
A separable covariance function (left) and a space‐time covariance function with dynamical compact support. Abstract In this article, we provide a comprehensive review of space–time covariance functions. As for the spatial domain, we focus on either the d‐dimensional Euclidean space or on the unit d‐dimensional sphere.
Emilio Porcu   +2 more
wiley   +1 more source

An efficient numerical model for the simulation of coupled heat, air, and moisture transfer in porous media

open access: yesEngineering Reports, Volume 2, Issue 2, February 2020., 2020
An efficient explicit numerical model is proposed for the simulation of heat, air, and moisture transfer in porous material. The combination of innovative approaches enables to relax the numerical stability condition to reduce the computational time. Abstract This article proposes an efficient explicit numerical model with a relaxed stability condition
Julien Berger   +3 more
wiley   +1 more source

Weak Comparison Principle for Weighted Fractional p‐Laplacian Equation

open access: yesJournal of Function Spaces, Volume 2020, Issue 1, 2020., 2020
The aim of this paper is to establish a weak comparison principle for a class fractional p‐Laplacian equation with weight. The nonlinear term f(x, s) > 0 is a Carathéodory function which is possibly unbounded both at the origin and at infinity and such that f(x, s)s1−p decreases with respect to s for a.e. x ∈ Ω.
Jin Xie, Jiabin Zuo
wiley   +1 more source

A generalized nonlinear Picone identity for the p-biharmonic operator and its applications

open access: yesJournal of Inequalities and Applications, 2019
A generalized nonlinear Picone identity for the p-biharmonic operator is established in this paper. As applications, a Sturmian comparison principle to the p-biharmonic equation with singular term, a Liouville’s theorem to the p-biharmonic system, and a ...
Tingfu Feng
doaj   +1 more source

A Network Coding‐Based Braided Multipath Routing Protocol for Wireless Sensor Networks

open access: yesWireless Communications and Mobile Computing, Volume 2019, Issue 1, 2019., 2019
In wireless sensor networks (WSNs), energy efficiency can simultaneously guarantee robustness to link loss and node failure and is a key design goal of routing protocols because WSNs are strongly constrained in terms of transmission reliability, transmission delay, and energy consumption.
Zhihua Li   +4 more
wiley   +1 more source

Bifurcation and Nodal Solutions for the Half‐Linear Problems with Nonasymptotic Nonlinearity at 0 and ∞

open access: yesDiscrete Dynamics in Nature and Society, Volume 2016, Issue 1, 2016., 2016
We study the existence of nodal solutions for the following problem: −x″ = αx+ + βx− + ra(t)f(x), 0 < t < 1, x(0) = x(1) = 0, where r ≠ 0 is a parameter, a(t) ∈ C([0,1], (0, ∞)) with a(t)≢0 on any subinterval of [0,1], x+ = max{x, 0}, x− = −min{x, 0}, and α, β ∈ C[0,1]; f∈C(R,R), sf(s) > 0 for s ≠ 0, and f0, f∞ ∉ (0, ∞), where f0 = lim|s|→0f(s)/s and f∞
Wenguo Shen, Gabriele Bonanno
wiley   +1 more source

Comparing First‐Order Microscopic and Macroscopic Crowd Models for an Increasing Number of Massive Agents

open access: yesAdvances in Mathematical Physics, Volume 2016, Issue 1, 2016., 2016
A comparison between first‐order microscopic and macroscopic differential models of crowd dynamics is established for an increasing number N of pedestrians. The novelty is the fact of considering massive agents, namely, particles whose individual mass does not become infinitesimal when N grows.
Alessandro Corbetta   +2 more
wiley   +1 more source

Cross‐Prudence and Optimal Prevention

open access: yesInternational Economic Review, EarlyView.
ABSTRACT In this paper, we study optimal prevention in the presence of a correlated nonfinancial background risk. Under positive correlation, cross‐prudence in the nonfinancial attribute reduces optimal prevention. We establish this result in the most direct extension of the standard prevention problem with binary marginal distributions and show that ...
Jingyuan Li, Richard Peter, Lin Zhou
wiley   +1 more source

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