Results 21 to 30 of about 7,181,331 (93)
Sturmian comparison and oscillation theorems for quasilinear elliptic equations with mixed nonlinearities via Picone-type inequality [PDF]
application/pdfA Picone-type inequality is established for quasilinear elliptic operators with mixed nonlinearities, and Sturmian comparison and oscillation theorems for quasilinear elliptic equations are derived by using the Picone-type inequality ...
Yoshida, Norio
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Discrete 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
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Cross‐Prudence and Optimal Prevention
International 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
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Advances 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
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The roles of multinational enterprises in governing the sustainability of global supply chains
International Journal of Management Reviews, Volume 28, Issue 3, July 2026.Abstract An extensive but fragmented body of research shows that multinational enterprises (MNEs) engage with multiple sustainability rules in global supply chains (GSCs) spanning the private, social and public governance sectors. MNEs perform diverse roles by either shaping or complying with these rules.
Cristina Leone +2 more
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A Local Estimate for the Maximal Function in Lebesgue Spaces with EXP‐Type Exponents
Journal of Function Spaces, Volume 2015, Issue 1, 2015., 2015 It is proven that if 1 ≤ p(·) < ∞ in a bounded domain Ω⊂Rn and if p(·) ∈ EXPa(Ω) for some a > 0, then given f ∈ Lp(·)(Ω), the Hardy‐Littlewood maximal function of f, Mf, is such that p(·)log(Mf) ∈ EXPa/(a+1)(Ω). Because a/(a + 1) < 1, the thesis is slightly weaker than (Mf) λp(·) ∈ L1(Ω) for some λ > 0. The assumption that p(·) ∈ EXPa(Ω) for some a > 0
Alberto Fiorenza, Henryk Hudzik
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Transactions of the Institute of British Geographers, Volume 51, Issue 1, March 2026.Abstract This article develops a cultural political ecology approach to disarticulations and labour unrest. The reference point for analysis is a struggle at a Whirlpool factory in Naples that the company announced would close in 2019, six months after signing an agreement with the Italian government, including a multi‐million investment plan.
Carlo Inverardi‐Ferri
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Stability and Convergence of Solutions to Volterra Integral Equations on Time Scales
Discrete Dynamics in Nature and Society, Volume 2015, Issue 1, 2015., 2015 We consider Volterra integral equations on time scales and present our study about the long time behavior of their solutions. We provide sufficient conditions for the stability and investigate the convergence properties when the kernel of the equations vanishes at infinity.
Eleonora Messina +2 more
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Bifurcation for indefinite‐weighted p$p$‐Laplacian problems with slightly subcritical nonlinearity
Mathematische Nachrichten, Volume 297, Issue 11, Page 3982-4002, November 2024.Abstract We study a superlinear elliptic boundary value problem involving the p$p$‐Laplacian operator, with changing sign weights. The problem has positive solutions bifurcating from the trivial solution set at the two principal eigenvalues of the corresponding linear weighted boundary value problem.
Mabel Cuesta, Rosa Pardo
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Maximum Principles for Discrete and Semidiscrete Reaction‐Diffusion Equation
Discrete Dynamics in Nature and Society, Volume 2015, Issue 1, 2015., 2015 We study reaction‐diffusion equations with a general reaction function f on one‐dimensional lattices with continuous or discrete time ux′ (or Δtux)=k(ux-1-2ux+ux+1)+f(ux), x∈Z. We prove weak and strong maximum and minimum principles for corresponding initial‐boundary value problems.
Petr Stehlík +2 more
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