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Fractal and Fractional, Volume 6, Issue 8

August 2022 - 58 articles

Cover Story: This paper enhances chaotic systems using fractional orders, multi-scroll grid, dynamic rotation angles, and translational parameters. The rotated system is successfully utilized as a pseudo-random number generator (PRNG) in an image encryption scheme. For hardware realization, the coordinate rotation digital computer (CORDIC) algorithm is used to implement rotation, and the Grünwald–Letnikov (GL) technique is used for solving the fractional-order system. The proposed hardware architectures are realized on a field-programmable gate array (FPGA) using the Xilinx ISE 14.7 on Artix 7 XC7A100T kit. The achieved throughputs are 821.92 Mbits/s and 520.768 Mbits/s for two- and three-dimensional rotating chaotic systems, respectively. View this paper
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Articles (58)

  • Article
  • Open Access
8 Citations
1,993 Views
17 Pages

This paper initiates a study on the existence and approximate controllability for a type of non-instantaneous impulsive stochastic evolution equation (ISEE) excited by fractional Brownian motion (fBm) with Hurst index 0<H<1/2. First, to overcom...

  • Article
  • Open Access
4 Citations
2,646 Views
17 Pages

We present a finite difference/spectral method for the two-dimensional generalized time fractional cable equation by combining the second-order backward difference method in time and the Galerkin spectral method in space with Legendre polynomials. Th...

  • Article
  • Open Access
10 Citations
2,672 Views
15 Pages

The time-fractional Cattaneo equation is an equation where the fractional order α∈(1,2) has the capacity to model the anomalous dynamics of physical diffusion processes. In this paper, we consider an efficient scheme for solving such an eq...

  • Article
  • Open Access
8 Citations
2,103 Views
15 Pages

On Sharp Estimate of Third Hankel Determinant for a Subclass of Starlike Functions

  • Lei Shi,
  • Muhammad Arif,
  • Khalil Ullah,
  • Nasser Alreshidi and
  • Meshal Shutaywi

In our present investigation, a subclass of starlike function Sn−1,L* connected with a domain bounded by an epicycloid with n−1 cusps was considered. The main work is to investigate some coefficient inequalities, and second and third Hankel determina...

  • Article
  • Open Access
1 Citations
2,205 Views
16 Pages

Solutions of Initial Value Problems with Non-Singular, Caputo Type and Riemann-Liouville Type, Integro-Differential Operators

  • Christopher N. Angstmann,
  • Stuart-James M. Burney,
  • Bruce I. Henry and
  • Byron A. Jacobs

Motivated by the recent interest in generalized fractional order operators and their applications, we consider some classes of integro-differential initial value problems based on derivatives of the Riemann–Liouville and Caputo form, but with n...

  • Article
  • Open Access
4 Citations
1,787 Views
18 Pages

(q1,q2)-Trapezium-Like Inequalities Involving Twice Differentiable Generalized m-Convex Functions and Applications

  • Muhammad Uzair Awan,
  • Muhammad Zakria Javed,
  • Ibrahim Slimane,
  • Artion Kashuri,
  • Clemente Cesarano and
  • Kamsing Nonlaopon

A new auxiliary result pertaining to twice (q1,q2)-differentiable functions is derived. Using this new auxiliary result, some new versions of Hermite–Hadamard’s inequality involving the class of generalized m-convex functions are obtained. Finally, t...

  • Article
  • Open Access
2 Citations
1,929 Views
11 Pages

We study a class of nonlinear fractional differential equations with multiple delays, which is represented by the Voigt creep fractional model of viscoelasticity. We discuss two Voigt models, the first being linear and the second being nonlinear. The...

  • Article
  • Open Access
3 Citations
2,496 Views
13 Pages

This paper mainly considers the parameter estimation problem for several types of differential equations controlled by linear operators, which may be partial differential, integro-differential and fractional order operators. Under the idea of data-dr...

  • Article
  • Open Access
13 Citations
2,911 Views
17 Pages

CORDIC-Based FPGA Realization of a Spatially Rotating Translational Fractional-Order Multi-Scroll Grid Chaotic System

  • Wafaa S. Sayed,
  • Merna Roshdy,
  • Lobna A. Said,
  • Norbert Herencsar and
  • Ahmed G. Radwan

This paper proposes an algorithm and hardware realization of generalized chaotic systems using fractional calculus and rotation algorithms. Enhanced chaotic properties, flexibility, and controllability are achieved using fractional orders, a multi-sc...

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Fractal Fract. - ISSN 2504-3110