Results 141 to 150 of about 4,205,835 (294)
Maximum Principle and generalized principal eigenvalue for degenerate elliptic operators
, 2013 We characterize the validity of the Maximum Principle in bounded domains for fully nonlinear degenerate elliptic operators in terms of the sign of a suitably defined generalized principal eigenvalue.
Henri Berestycki +3 more
core
Micromachined Double‐Membrane Mechanically Tunable Metamaterial for Thermal Infrared Filtering
Advanced Photonics Research, Volume 6, Issue 5, May 2025.Herein, a mechanically tunable double‐layer plasmonic metamaterial leveraging the extraordinary optical transmission effect observed in subwavelength arrays of openings within thin metal layers is presented. The concept is experimentally validated by integrating the proposed metamaterial structure into an electrostatic parallel‐plate actuator to create
Oleg Bannik +7 more
wiley +1 more source
From Rigid to Soft Robotic Approaches for Neuroendoscopy
Advanced Robotics Research, EarlyView.Robotic assistance has had minimal impact on deep intraventricular surgeries, where small‐scale, precision, and reduced invasiveness can contribute to improved patient outcomes. Emerging technologies in rigid, soft, and hybrid robotics are reviewed to identify the most promising mechanisms for deep brain navigation in addition to an attempt to identify
Kieran Gilday +3 more
wiley +1 more source
A radially symmetric anti-maximum principle and applications to fishery management models
Electronic Journal of Differential Equations, 2004 For a boundary-value problem of an ordinary differential equation, we prove that the anti-maximum principle holds when the forcing term satisfies an integral inequality.
Junping Shi
doaj
Advanced Robotics Research, EarlyView.A codesign multiobjective optimization framework was developed to enhance the morphology and controller of a snake‐like robot driven by artificial muscles. It improved planar locomotion, agility, and power efficiency. The approach optimized link geometry and controller gains, revealing that shorter muscles near joints and longer linkages maximize ...
Ayla Valles, Mahdi Haghshenas‐Jaryani
wiley +1 more source
Constant sign and nodal solutions for parametric (p, 2)-equations
Advances in Nonlinear Analysis, 2019 Papageorgiou Nikolaos S. +1 more
doaj +1 more source
Nonlocomotory Robotic Strategies for Dynamic Rotation Control in Terrestrial Robots: A Review
Advanced Robotics Research, EarlyView.Terrestrial robots increasingly require rapid body rotation to maintain stability and agility in complex environments. This review shows nonlocomotory rotational control strategies that operate without ground contact, including reaction wheels, tails, bars, limbs, and thrusters.
Y. Liang +14 more
wiley +1 more source
Le Matematiche, 1993 Global solvability and uniqueness results are established for Dirichlet's problem for a class of nonlinear differential equations on a convex domain in the plane, where the nonlinear operator is elliptic in sense of Campanato. We prove existence by means
Dian K. Palagachev
doaj
Strong maximum principle for weakly nonlinear parabolic equations
, 1965 Die Verff. kündigen zwei Resultate an: 1. Die Gültigkeit des strengen Maximumprinzips (im Sinne von L. Nirenberg) für schwache Lösungen \(u\) von \[ D_tu - \sum_{i,j=1}^n D_i(a_{ij} D_ju) + f(u,u_{x_i}) = 0 \] mit \(u\in W_2^{(1,1/2)}(K)\) für jede kompakte Teilmenge \(K\) des Gebietes \(\omega\subset\mathbb R^{n+1}\), in welchem der ...
Kadlec, J., Vyborny, R.
openaire +1 more source
Advanced Robotics Research, EarlyView.Visual teach‐and‐repeat (VTR) navigation allows robots to learn and follow routes without building a full metric map. We show that navigation accuracy for VTR can be improved by integrating a topological map with error‐drift correction based on stereo vision.
Fuhai Ling, Ze Huang, Tony J. Prescott
wiley +1 more source