Results 131 to 140 of about 2,924,633 (320)

On the approximation of some nonlinear equations [PDF]

open access: yesAequationes Mathematicae, 1987
We approximate the solutions of a polynomial equation in a Banach space using the solutions of finite rank polynomial equations.
openaire   +1 more source

Multi‐Pathway Upconversion Emission in Symmetry‐Broken Nanocavities: Broadband Multiresonant Enhancement and Anti‐Correlated Interfacial Sensitivity

open access: yesAdvanced Functional Materials, EarlyView.
Symmetry‐broken plasmonic nanoantenna arrays achieve broadband multiresonant enhancement of second harmonic generation (SHG), third harmonic generation (THG), and upconversion photoluminescence (UCPL), under femtosecond laser excitation across the near‐infrared range (1000–1600 nm).
Elieser Mejia   +9 more
wiley   +1 more source

Composite model of radio-frequency path nonlinearity for discrete analysis of electromagnetic compatibility

open access: yesDoklady Belorusskogo gosudarstvennogo universiteta informatiki i radioèlektroniki, 2019
Nonlinearity model synthesis techniques used in the framework of the discrete technology of electromagnetic compatibility analysis are compared by an example of the UHF amplifier: the models synthesized by the different techniques are collated according ...
E. V. Sinkevich
doaj  

Parameter Estimation of Population Pharmacokinetic Models with Stochastic Differential Equations: Implementation of an Estimation Algorithm

open access: yesJournal of Probability and Statistics, 2014
Population pharmacokinetic (PPK) models play a pivotal role in quantitative pharmacology study, which are classically analyzed by nonlinear mixed-effects models based on ordinary differential equations.
Fang-Rong Yan   +6 more
doaj   +1 more source

Discovery of an Intrinsic Antiferromagnetic Semiconductor EuSc2Te4 With Magnetism‐Driven Nonlinear Transport

open access: yesAdvanced Functional Materials, EarlyView.
EuSc₂Te₄, an antiferromagnetic semiconductor, exhibits a nonlinear Hall effect (NLHE) characterized by quadratic current–voltage behavior. Combined experimental and theoretical studies reveal that this NLHE is linked to its antiferromagnetism and involves contributions from the quantum metric.
Seng Huat Lee   +15 more
wiley   +1 more source

Nonlinear Ritz approximation for Fredholm functionals

open access: yesElectronic Journal of Differential Equations, 2015
In this article we use the modify Lyapunov-Schmidt reduction to find nonlinear Ritz approximation for a Fredholm functional. This functional corresponds to a nonlinear Fredholm operator defined by a nonlinear fourth-order differential equation.
Mudhir A. Abdul Hussain
doaj  

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