Results 81 to 90 of about 4,205,835 (294)

A remark on Bony maximum principle

open access: yes, 1983
We extend a result due to J. M. Bony concerning a form of the classical maximum principle adapted to Sobolev spaces. We treat the case of the limiting exponent and show that the result is optimal.
P.-L. Lions
core   +1 more source

MAXIMUM PRINCIPLE AND THE FOURTH ORDER BOUNDARY VALUE PROBLEM [PDF]

open access: yes, 2011
This paper is devoted to the study the nonlinear boundary value problem . We state a maximum principle related with the operator and apply it to prove the existence and approximation of solutions to the problem (i), (ii), in presence of properly ordered ...
Yermachenko, Inara, Inara Yermachenko
core   +1 more source

A Nonlinear Organic Low‐Frequency Sound Sensor Based on Electrochemical Coupling in a Solidified Gel Membrane

open access: yesAdvanced Functional Materials, EarlyView.
A novel nonlinear infrasound sensor concept based on a free‐standing ion conductive gel membrane is introduced. Acoustic signals are directly transduced into an electrical signal using an internal application mechanisms (gating). The nonlinearity might be used for neuromorphic in‐sensor computing. ABSTRACT Measuring low‐frequency or infrasound acoustic
Maarten Mittmann   +6 more
wiley   +1 more source

Efficient Magnetization Switching Driven by Orbital Torque in Light 3d Transition‐Metal Nitrides

open access: yesAdvanced Functional Materials, EarlyView.
Efficient magnetization switching is demonstrated through orbital torque generated from light 3d transition‐metal nitride. Transition‐metal nitrides are established as effective sources of orbital angular momentum for current‐induced switching, highlighting their potential for low‐power next‐generation orbitronic devices beyond conventional heavy‐metal‐
Gaurav K. Shukla   +3 more
wiley   +1 more source

Maximum Principle and Existence of Weak Solutions for Nonlinear System Involving Singular (p,q)-Laplacian Operators [PDF]

open access: yes, 2016
We investigate in this work necessary and sufficient conditions for having the maximum principle for nonlinear system involving singular (p,q)-Laplacian operators on bounded domain Ω of Rn.
Khafagy, Salah
core   +2 more sources

Localization of singularities for nonlinear parabolic equations with a potential

open access: yes, 2017
We consider nonlinear parabolic equations of the form $$u_t= \Delta u+V(x)f(u),$$ where $V\ge 0$ is a potential and $f$ is a nonlinearity which can be either of blow-up or of quenching type, typically $$f(u)=(1+u)^p\quad (p>1) \quad\hbox{ or }\quad f(u)
Souplet, Philippe
core   +1 more source

Parameter estimation in nonlinear AR–GARCH models [PDF]

open access: yes
This paper develops an asymptotic estimation theory for nonlinear autoregressive models with conditionally heteroskedastic errors. We consider a general nonlinear autoregression of order p (AR(p)) with the conditional variance specified as a general ...
Mika Meitz, Pentti Saikkonen
core  

Material Coupling in Hybrid Neuromorphic Devices: From Fundamentals to System‐Level Applications

open access: yesAdvanced Functional Materials, EarlyView.
Hybrid neuromorphic devices utilize heterointerfaces between emerging semiconductors, where charge transfer and trapping, ion or defect modulation, and photogating are translated into synaptic functions. This paper discusses coupling strategies that tailor interfacial electronic and ionic properties in organic semiconductors, metal oxides, two ...
Minsu So   +5 more
wiley   +1 more source

Bioprinted Stiffness‑Tunable Pancreatic Microniches to Decode Early Tumor Initiation Mechanisms

open access: yesAdvanced Healthcare Materials, EarlyView.
Stiffness‐tunable GelMA microniches generated by microvalve bioprinting preserve wild‐type acinar identity while revealing a nonlinear, Kras‐dependent response to matrix mechanics. Intermediate stiffness promotes acinar‐to‐ductal metaplasia and proliferation, defining a permissive mechanical window.
Aurelien Mazet   +11 more
wiley   +1 more source

AN ALGORITHM FOR COMPUTING BOUNDARY POINTS OF REACHABLE SETS OF CONTROL SYSTEMS UNDER INTEGRAL CONSTRAINTS

open access: yesUral Mathematical Journal, 2017
In this paper we consider a reachability problem for a nonlinear affine-control system  with  integral constraints, which assumed to be quadratic in the control variables.  Under  controllability assumptions it was  proved [8] that any admissible control,
Mikhail I. Gusev
doaj   +1 more source

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