Results 21 to 30 of about 451 (136)
A Comparative Study of Low‐Dissipation Numerical Schemes for Hyperbolic Conservation Laws
Numerical Methods for Partial Differential Equations, Volume 42, Issue 5, September 2026.ABSTRACT This work provides a comparative assessment of several low‐dissipation numerical schemes for hyperbolic conservation laws, highlighting their performance relative to the classical Harten‐Lax‐van Leer (HLL) schemes. The schemes under consideration include the classical Harten‐Lax‐van Leer‐Contact (HLLC), the recently proposed TV flux splitting,
Shaoshuai Chu, Michael Herty
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Oscillations of advanced difference equations with variable arguments
Electronic Journal of Qualitative Theory of Differential Equations, 2012 Consider the first-order advanced difference equation of the form \begin{equation*} \nabla x(n)-p(n)x(\mu (n))=0\text{, }\ n\geq 1\, [\Delta x(n)-p(n)x(\nu (n))=0, n\geq 0], \end{equation*} where $\nabla $ denotes the backward difference operator ...
George Chatzarakis, Ioannis Stavroulakis
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Speech Neurophysiology in Realistic Contexts: Big Hype or Big Leap?
European Journal of Neuroscience, Volume 63, Issue 12, June 2026.Speech neurophysiology is moving from controlled listening tasks to dynamic, socially rich interactions, challenging traditional methods. This shift promises deeper insights into how the brain processes and represents speech in real‐world contexts, while introducing new analytical complexities.
Giovanni M. Di Liberto, Emily Y. J. Ip
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Oscillations of nonlinear difference equations with deviating arguments [PDF]
Mathematica Bohemica, 2018 This paper is concerned with the oscillatory behavior of first-order nonlinear difference equations with variable deviating arguments. The corresponding difference equations of both retarded and advanced type are studied.
George E. Chatzarakis, Julio G. Dix
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Local Field Aperiodic Spectral Power Modulated by Deep Brain Stimulation in Parkinson's Disease
Movement Disorders, Volume 41, Issue 5, Page 1163-1172, May 2026.Abstract Background Aperiodic spectral broadband power has been described recently as reflecting Parkinson's disease (PD) severity. It has therefore become an increasing focus of research interest in the context of the new adaptive deep brain stimulation (DBS) approach.
Martin Lamoš +6 more
wiley +1 more source
Oscillations of differential equations generated by several deviating arguments
Advances in Difference Equations, 2017 Sufficient conditions, involving limsup and liminf, for the oscillation of all solutions of differential equations with several not necessarily monotone deviating arguments and nonnegative coefficients are established.
George E Chatzarakis, Tongxing Li
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On the Nonoscillation of Second-Order Neutral Delay Differential Equation with Forcing Term
Discrete Dynamics in Nature and Society, 2008 This paper is concerned with nonoscillation of second-order neutral delay differential equation with forcing term. By using contraction mapping principle, some sufficient conditions for the existence of nonoscillatory solution are established.
Jin-Zhu Zhang +5 more
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Oscillations of differential equations with non-monotone deviating arguments
Advances in Difference Equations, 2019 The oscillatory behavior of the solutions to a differential equation with several non-monotone arguments and nonnegative coefficients is studied, and some new oscillation criteria are given.
George E. Chatzarakis +2 more
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A New Adaptive Fuzzy Logic Controller Configuration for Control Systems Design
IET Control Theory &Applications, Volume 20, Issue 1, January/December 2026.Adaptive fuzzy logic controller as a potential control scheme is introduced • Nonlinear gains based on tunable hyperbolic functions are used as input SFs • SFS algorithm is utilised for optimal design of controller parameters • Performance gained is explored on various test systems with and w/o dead time • A comparison with the cutting‐edge approaches ...
Emre Çelik
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Monotonicity conditions in oscillation to superlinear differential equations
Electronic Journal of Qualitative Theory of Differential Equations, 2016 We consider the second order differential equation \[ \bigl(a(t)|x^{\prime}|^{\alpha}\operatorname{sgn\,}x^{\prime}\bigr)^{\prime }+b(t)|x|^{\beta}\operatorname{sgn\,}x=0 \] in the super-linear case ...
Zuzana Dosla, Mauro Marini
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