Results 31 to 40 of about 13,243,241 (294)

New approach to study the van der Pol equation for large damping [PDF]

open access: yes, 2017
We present a new approach to establish the existence of a unique limit cycle for the van der Pol equation in case of large damping. It is connected with the bifurcation of a stable hyperbolic limit cycle from a closed curve composed of two heteroclinic ...
Schneider, Klaus   +3 more
core   +2 more sources

Numerical inverse Laplace transform based on Bernoulli polynomials operational matrix for solving nonlinear differential equations

open access: yesResults in Physics, 2020
A numerical inverse Laplace transform method is established using Bernoulli polynomials operational matrix of integration. The efficiency of the method is demonstrated through some standard nonlinear differential equations: Duffing equation, Van der Pol ...
Dimple Rani, Vinod Mishra
doaj   +1 more source

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

open access: yesAdvanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

Modified Legendre Wavelets Technique for Fractional Oscillation Equations

open access: yesEntropy, 2015
Physical Phenomena’s located around us are primarily nonlinear in nature and their solutions are of highest significance for scientists and engineers.
Syed Tauseef Mohyud-Din   +2 more
doaj   +1 more source

Periodic solutions of relativistic Liénard-type equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2020
In this paper, we prove that the relativistic Liénard-type equation \begin{equation*} \begin{split} \frac{d}{dt}\left(\frac{\dot{x}\left\vert \dot{x} \right\vert ^{p-2}}{\big( 1-\left\vert \dot{x}\right\vert ^{p}\big) ^{\frac{p-1}{p}}}\right) +f\left( x ...
Mustafa Aktas
doaj   +1 more source

Controlling Stochastic Sensitivity by Feedback Regulators in Nonlinear Dynamical Systems with Incomplete Information

open access: yesMathematics, 2021
The problem of synthesis of stochastic sensitivity for equilibrium modes in nonlinear randomly forced dynamical systems with incomplete information is considered.
Irina Bashkirtseva
doaj   +1 more source

On Periodic Perturbations of Asymmetric Duffing–Van-der-Pol Equation [PDF]

open access: yesInternational Journal of Bifurcation and Chaos, 2014
Time-periodic perturbations of an asymmetric Duffing–Van-der-Pol equation close to an integrable equation with a homoclinic "figure-eight" of a saddle are considered. The behavior of solutions outside the neighborhood of "figure-eight" is studied analytically.
Albert D. Morozov, Olga S. Kostromina
openaire   +4 more sources

Computing one-dimensional global manifolds of Poincaré maps by continuation [PDF]

open access: yes, 2005
We present an algorithm to compute one-dimensional stable and unstable manifolds of saddle periodic orbits in a Poincaré section. The computation is set up as a boundary value problem by restricting the beginning and end points of orbit segments to the ...
England, James   +6 more
core   +1 more source

Enhancing Amphibious Flipper‐Based Locomotion Through Terrain‐Dependent Bayesian Optimization of Central Pattern Generator Control

open access: yesAdvanced Robotics Research, EarlyView.
A sea turtle‐inspired amphibious robot uses simulation‐guided optimization to adapt its flipper coordination to different environments. Sensitivity analysis and multiobjective Bayesian optimization identify terrain‐dependent controllers that are validated on hardware.
Nnamdi C. Chikere, Yasemin Ozkan‐Aydin
wiley   +1 more source

How Video‐Based Information Affects Farmers' Willingness to Pay for Drone Services

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT Professional service for digital technology like agricultural drones lowers transaction costs and scope thresholds for smallholders. Meanwhile, perceptual adoption barriers remain underexplored. We conduct a two‐stage choice experiment with a randomized video‐based information treatment among 384 Chinese crop farmers to measure its effect on ...
Hua Zhang   +4 more
wiley   +1 more source

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