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24 Results Found

  • Article
  • Open Access
1 Citations
1,681 Views
21 Pages

23 June 2022

Our purpose in this article is to study the asymptotic behavior of undamped evolution equations with fading memory on time-dependent spaces. By means of the theory of processes on time-dependent spaces, asymptotic a priori estimate and the technique...

  • Article
  • Open Access
11 Citations
4,822 Views
18 Pages

17 August 2018

We report the time-evolution of Probability Density Functions (PDFs) in a toy model of self-organised shear flows, where the formation of shear flows is induced by a finite memory time of a stochastic forcing, manifested by the emergence of a bimodal...

  • Article
  • Open Access
1 Citations
2,005 Views
21 Pages

In this paper, we consider the backward asymptotically autonomous dynamical behavior for fractional non-autonomous nonclassical diffusion equations driven by a Wong–Zakai approximations process in Hs(Rn) with s∈(0,1). We first prove the ex...

  • Article
  • Open Access
50 Citations
5,194 Views
11 Pages

3 August 2018

Stochastic processes are ubiquitous in nature and laboratories, and play a major role across traditional disciplinary boundaries. These stochastic processes are described by different variables and are thus very system-specific. In order to elucidate...

  • Article
  • Open Access
1 Citations
1,339 Views
13 Pages

Dynamic Time Warping as Elementary Effects Metric for Morris-Based Global Sensitivity Analysis of High-Dimension Dynamical Models

  • Dhan Lord B. Fortela,
  • Ashley P. Mikolajczyk,
  • Rafael Hernandez,
  • Emmanuel Revellame,
  • Wayne Sharp,
  • William Holmes,
  • Daniel Gang and
  • Mark E. Zappi

27 November 2024

This work focused on demonstrating the use of dynamic time warping (DTW) as a metric for the elementary effects computation in Morris-based global sensitivity analysis (GSA) of model parameters in multivariate dynamical systems. One of the challenges...

  • Article
  • Open Access
5 Citations
1,242 Views
15 Pages

This study explores the novel dynamics of the (3+1)-dimensional generalized Korteweg–de Vries–Zakharov–Kuznetsov (KdV-ZK) equation. A Galilean transformation is employed to derive the associated system of equations. Perturbing this...

  • Article
  • Open Access
7 Citations
2,496 Views
11 Pages

On (n,1) Wave Attractors: Coordinates and Saturation Time

  • Ilias Sibgatullin,
  • Alexandr Petrov,
  • Xiulin Xu and
  • Leo Maas

4 February 2022

The simplest geometry of the domain, for which internal wave attractors were for the first time investigated both experimentally and numerically, has the shape of a trapezium with one vertical wall and one inclined lateral wall, characterized by two...

  • Article
  • Open Access
5 Citations
1,675 Views
13 Pages

Local and Network Dynamics of a Non-Integer Order Resistor–Capacitor Shunted Josephson Junction Oscillators

  • Sathiyadevi Kanagaraj,
  • Premraj Durairaj,
  • A. Amalin Prince and
  • Karthikeyan Rajagopal

6 September 2022

Spiral waves are an intriguing phenomenon that can be found in a variety of chemical and biological systems. We consider the fractional-order resistor–capacitor shunted Josephson junction chaotic oscillator to investigate the spiral wave patter...

  • Article
  • Open Access
11 Citations
6,250 Views
21 Pages

Entropy Increase in Switching Systems

  • José M. Amigó,
  • Peter E. Kloeden and
  • Ángel Giménez

7 June 2013

The relation between the complexity of a time-switched dynamics and the complexity of its control sequence depends critically on the concept of a non-autonomous pullback attractor. For instance, the switched dynamics associated with scalar dissipativ...

  • Article
  • Open Access
6 Citations
3,908 Views
15 Pages

11 May 2020

Brain dynamics can exhibit narrow-band nonlinear oscillations and multistability. For a subset of disorders of consciousness and motor control, we hypothesized that some symptoms originate from the inability to spontaneously transition from one attra...

  • Article
  • Open Access
3 Citations
1,951 Views
19 Pages

Deep Gene Networks and Response to Stress

  • Sergey Vakulenko and
  • Dmitry Grigoriev

26 November 2021

We consider systems of differential equations with polynomial and rational nonlinearities and with a dependence on a discrete parameter. Such systems arise in biological and ecological applications, where the discrete parameter can be interpreted as...

  • Article
  • Open Access
16 Citations
4,041 Views
13 Pages

4 July 2019

When chaotic systems are used in different practical applications, such as chaotic secure communication and chaotic pseudorandom sequence generators, a large number of chaotic systems are strongly required. However, for a lack of a systematic constru...

  • Article
  • Open Access
1 Citations
2,017 Views
24 Pages

5 August 2024

In this paper, we define fractal synchronization (FS) based on the idea of stochastic synchronization and propose a mathematical apparatus for estimating FS. One major advantage of our proposed approach is that fractal synchronization makes it possib...

  • Article
  • Open Access
803 Views
18 Pages

The chaotic dynamics observed in mathematical models of cancer can correspond to the unpredictable tumor growth and treatment responses seen in clinical settings. Suppressing this chaos is a significant challenge in theoretical oncology. This paper i...

  • Article
  • Open Access
4 Citations
2,691 Views
16 Pages

30 October 2020

This paper investigates the chaotic behavior of a modified jerk circuit with Chua’s diode. The Chua’s diode considered here is a nonlinear resistor having a symmetric piecewise linear voltage-current characteristic. To describe the system...

  • Article
  • Open Access
45 Citations
6,524 Views
13 Pages

Selection of Embedding Dimension and Delay Time in Phase Space Reconstruction via Symbolic Dynamics

  • Mariano Matilla-García,
  • Isidro Morales,
  • Jose Miguel Rodríguez and
  • Manuel Ruiz Marín

11 February 2021

The modeling and prediction of chaotic time series require proper reconstruction of the state space from the available data in order to successfully estimate invariant properties of the embedded attractor. Thus, one must choose appropriate time delay...

  • Article
  • Open Access
96 Citations
5,561 Views
23 Pages

A Multidimensional Hyperjerk Oscillator: Dynamics Analysis, Analogue and Embedded Systems Implementation, and Its Application as a Cryptosystem

  • Tsafack Nestor,
  • Nkapkop Jean De Dieu,
  • Kengne Jacques,
  • Effa Joseph Yves,
  • Abdullah M. Iliyasu and
  • Ahmed A. Abd El-Latif

21 December 2019

A lightweight image encryption algorithm is presented based on chaos induction via a 5-dimensional hyperjerk oscillator (5DHO) network. First, the dynamics of our 5DHO network is investigated and shown to exhibit up to five coexisting hidden attracto...

  • Feature Paper
  • Article
  • Open Access
18 Citations
6,587 Views
23 Pages

27 March 2022

The model of two species competing for a resource proposed by R. May and A.P. Shapiro has not yet been fully explored. We study its dynamic modes. The model reveals complex dynamics: multistable in-phase and out-of-phase cycles, and their bifurcation...

  • Article
  • Open Access
243 Views
19 Pages

13 November 2025

In this paper, we first used a Modified Numerical Approximation Method (NAM) and then a fractional Laplace Decomposition Method (LDM) to find the solution to the symmetric Rössler attractor. The newly proposed NAM is obtained through a nuanced d...

  • Article
  • Open Access
487 Views
35 Pages

21 October 2025

This paper presents Rain-Cloud Condensation Optimizer (RCCO), a nature-inspired metaheuristic that maps cloud microphysics to population-based search. Candidate solutions (“droplets”) evolve under a dual-attractor dynamic toward both a gl...

  • Article
  • Open Access
612 Views
25 Pages

Fractal Neural Dynamics and Memory Encoding Through Scale Relativity

  • Călin Gheorghe Buzea,
  • Valentin Nedeff,
  • Florin Nedeff,
  • Mirela Panaite Lehăduș,
  • Lăcrămioara Ochiuz,
  • Dragoș Ioan Rusu,
  • Maricel Agop and
  • Dragoș Teodor Iancu

24 September 2025

Background/Objectives: Synaptic plasticity is fundamental to learning and memory, yet classical models such as Hebbian learning and spike-timing-dependent plasticity often overlook the distributed and wave-like nature of neural activity. We present a...

  • Article
  • Open Access
1,340 Views
14 Pages

Magnetic Filaments: Formation, Stability, and Feedback

  • Evgeny A. Kuznetsov and
  • Evgeny A. Mikhailov

26 February 2024

As is well known, magnetic fields in space are distributed very inhomogeneously. Sometimes, field distributions have forms of filaments with high magnetic field values. As many observations show, such a filamentation takes place in convective cells i...

  • Article
  • Open Access
1 Citations
824 Views
20 Pages

In this article, we investigate the fractional soliton solutions as well as the chaotic analysis of the fourth-order nonlinear Ablowitz–Kaup–Newell–Segur wave equation. This model is considered an intriguing high-order nonlinear par...