Results 51 to 60 of about 5,695,240 (285)
Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.Quadrotor unmanned aerial vehicle control is critical to maintain flight safety and efficiency, especially when facing external disturbances and model uncertainties. This article presents a robust reinforcement learning control scheme to deal with these challenges.
Yu Cai +3 more
wiley +1 more source
Nonlinear eigenvalue problems with semipositone structure
Electronic Journal of Differential Equations, 2000 In this paper we summarize the developments of semipositone problems to date, including very recent results on semipositone systems. We also discuss applications and open problems.
Alfonso Castro, C. Maya, R. Shivaji
doaj
Existence Theorems for Some Classes of Boundary Value Problems Involving the P(X)-Laplacian
Nonlinear Analysis, 2008 We prove an alternative for a nonlinear eigenvalue problem involving the p(x)-Laplacian and study a subcritical boundary value problem for the same operator.
Ionica Andrei
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Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.Magnetic soft robots offer promise in biomedicine due to their wireless actuation and rapid response, but current fabrication methods are complex and have limited cellular compatibility. A new, contactless bioassembly strategy using hydrodynamic instabilities is introduced, enabling customizable, centimeter‐scale robots.
Wei Gao +5 more
wiley +1 more source
Eigenvalue problems for degenerate nonlinear elliptic equations in anisotropic media
Boundary Value Problems, 2005 We study nonlinear eigenvalue problems of the type −div(a(x)∇u)=g(λ,x,u) in â„ÂN, where a(x) is a degenerate nonnegative weight. We establish the existence of solutions and we obtain information on qualitative properties as multiplicity ...
Vicenţiu RăDulescu +1 more
doaj +2 more sources
Hybrid TE-TE-wave propagation in closed plane waveguide filled with nonlinear medium
Известия высших учебных заведений. Поволжский регион: Физико-математические науки, 2022 Background. Analysis of new modes of wave propagation in planar nonlinear waveguide structures constitutes an important class of electromagnetic problems and leads to the emergence of new problem statements.
V.Yu. Martynova
doaj +1 more source
Eigenvalue problem for nonlinear elastic beam equation of fractional order [PDF]
, 2017 In this study, under some suitable assumptions, we determine an explicit eigenvalue interval for the existence of positive solution of singular fractional-order nonlinear elastic beam equation with bending term.
Khodabakhshi, Neda +1 more
core +1 more source
Quantum‐Mechanical Wave Functions in Singular Potentials: Linear and Nonlinear States
Advanced Physics Research, EarlyView.The attractive singular potential −1/r2$-1/r^2$ gives rise to the quantum collapse in the 3D linear Schroedinger equation. The article summarizes theoretical results demonstrating suppression of the collapse and creation of the missing ground state (GS) in a gas of bosonic particles, carrying an electric dipole moment, which are pulled to the central ...
Hidetsugu Sakaguchi, Boris A. Malomed
wiley +1 more source
Nonlinear eigenvalue problems in Sobolev spaces with variable exponent
Journal of Function Spaces and Applications, 2006 We study the boundary value problem -div((|∇u|p1(x)-2+|∇u|p2(x)-2)∇u)=f(x,u) in Ω, u=0 on ∂Ω, where Ω is a smooth bounded domain in ℝN. We focus on the cases when f±(x, u)=±(-λ|u|m(x)-2u+|u|q(x)-2u), where m(x)≔max{p1(x),p2(x)}
Teodora-Liliana Dinu
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Modeling and parameter estimation for fractional large‐scale interconnected Hammerstein systems
Asian Journal of Control, EarlyView.Abstract This paper addresses the challenge of modeling and identifying large‐scale interconnected systems exhibiting memory effects, hereditary properties, and non‐local interactions. We propose a fractional‐order extension of the Hammerstein architecture that incorporates Grünwald–Letnikov operators to capture complex dynamics through multiple ...
Mourad Elloumi +2 more
wiley +1 more source