By considering the Caputo fractional derivative and Riemann-Liouville integral, in the
present work, we are concerned with a nonlinear sequential fractional differential system of …

In this work, we investigate a new sequential coupled differential system of Duffing type. The
considered system involves Caputo Hadamard derivatives. Based on both Banach …

This study presents a new weak signal detection method based on the van der Pol–Duffing
oscillator. The principle of the proposed method is described. A weak signal is detected …

The type of symmetry exhibited by a travelling wave can have important implications for its
behaviour and properties, such as its polarization, dispersion, and interactions with other …

In this paper, we study a new nonlinear sequential fractional differential problem of Duffing
oscillator type. The considered problem involves two fractional order operators: Riemann …

Second-order oscillatory problems have been found to be applicable in studying various
phenomena in science and engineering; this is because these problems have the …

The subject of this paper is the existence, uniqueness and stability of solutions for a new
sequential Van der Pol–Duffing (VdPD) jerk fractional differential oscillator with Caputo …

In this paper, weak periodic signals detected in the EEG signals were analyzed for each
region of the brain, and its relationships with postsynaptic potentials were investigated. For …

This paper presents a novel methodology to estimate the frequency shift in chirp signals with
SNRs as low as− 17 dB through the use of an adaptive array of Duffing oscillators. The …

We study a new problem of nonlinear integrodifferential equations with nonlocal integral
conditions. The considered problem is singular at the origin of the time axis and it involves …