Results 21 to 30 of about 241 (122)

A Novel Autonomous 5-D Hyperjerk RC Circuit with Hyperbolic Sine Function. [PDF]

ScientificWorldJournal, 2018
A novel autonomous 5‐D hyperjerk RC circuit with hyperbolic sine function is proposed in this paper. Compared to some existing 5‐D systems like the 5‐D Sprott B system, the 5‐D Lorentz, and the Lorentz‐like systems, the new system is the simplest 5‐D system with complex dynamics reported to date. Its simplicity mainly relies on its nonlinear part which
Tsafack N, Kengne J.
europepmc   +2 more sources

Dynamical Analysis and Offset Boosting in a 4‐Dimensional Quintic Chaotic Oscillator with Circulant Connection of Space Variables

Complexity, Volume 2023, Issue 1, 2023., 2023
In recent years, much energy has been devoted to the study of chaotic models with specific features particularly those with cyclic connection of the variables. Previous ones provide multistability, amplitude control, and so on. Concerning the first phenomenon, models with ring connection of variables presented a coexistence of up to twelve disconnected
Nzoulewa Dountsop Sandrine, Kengne Jacques, Atila Bueno   +2 more
wiley   +1 more source

Four‐Scroll Hyperchaotic Attractor in a Five‐Dimensional Memristive Wien Bridge Oscillator: Analysis and Digital Electronic Implementation

Mathematical Problems in Engineering, Volume 2021, Issue 1, 2021., 2021
An electronic implementation of a novel Wien bridge oscillation with antiparallel diodes is proposed in this paper. As a result, we show by using classical nonlinear dynamic tools like bifurcation diagrams, Lyapunov exponent plots, phase portraits, power density spectra graphs, time series, and basin of attraction that the oscillator transition to ...
Gabin Jeatsa Kitio, Cyrille Ainamon, Karthikeyan Rajagopal, Léandre Kamdjeu Kengne, Sifeu Takougang Kingni, Justin Roger Mboupda Pone, Giuseppe Grassi   +6 more
wiley   +1 more source

Antimonotonicity: Concurrent Creation and Annihilation of Periodic Orbits [PDF]

The Annals of Mathematics, 1992
It is well-known that periodic orbits of the logistic family of one- dimensional maps \(f_ \lambda=\lambda-x^ 2\) are created monotonically as the parameter \(\lambda\) is increased. An antimonotonicity in the creation and annihilation of periodic orbits is indeed reflected in numerical simulations of the Hénon family \(H_ \lambda(x,y)=(\lambda- x^ 2+0.
Kan, Ittai, Koçak, Hüseyin, Yorke, James A.   +2 more
openaire   +2 more sources

Electronically Tunable 3D Autonomous Chaotic Oscillator Employing Single CCCFA and Its Extension to 4D

IEEE Access, 2022
This work presents the realization of a novel electronically tuneable third-order autonomous chaotic oscillator using a current-controlled current conveyor feedback amplifier (CCCFA).
Garima Shukla, Sajal K. Paul
doaj   +1 more source

Chaotic Dynamics of a Mixed Rayleigh–Liénard Oscillator Driven by Parametric Periodic Damping and External Excitations

Complexity, Volume 2021, Issue 1, 2021., 2021
In this paper, chaotic dynamics of a mixed Rayleigh–Liénard oscillator driven by parametric periodic damping and external excitations is investigated analytically and numerically. The equilibrium points and their stability evolutions are analytically analyzed, and the transitions of dynamical behaviors are explored in detail.
Yélomè Judicaël Fernando Kpomahou, Laurent Amoussou Hinvi, Joseph Adébiyi Adéchinan, Clément Hodévèwan Miwadinou, Chong Fu   +4 more
wiley   +1 more source

Efficient Utility Tree‐Based Algorithm to Mine High Utility Patterns Having Strong Correlation

Complexity, Volume 2021, Issue 1, 2021., 2021
High Utility Itemset Mining (HUIM) is one of the most investigated tasks of data mining. It has broad applications in domains such as product recommendation, market basket analysis, e‐learning, text mining, bioinformatics, and web click stream analysis.
Rashad Saeed, Azhar Rauf, Fahmi H. Quradaa, Syed Muhammad Asim, Dan Selişteanu   +4 more
wiley   +1 more source

A Simple Chaotic Wien Bridge Oscillator with a Fractional‐Order Memristor and Its Combination Synchronization for Efficient Antiattack Capability

Complexity, Volume 2021, Issue 1, 2021., 2021
Memristor‐based oscillators are of recent interest, and hence, in this paper, we introduce a new Wien bridge oscillator with a fractional‐order memristor. The novelty of the proposed oscillator is the multistability feature and the wide range of fractional orders for which the system shows chaos. We have investigated the various dynamical properties of
Anitha Karthikeyan, Karthikeyan Rajagopal, Victor Kamdoum Tamba, Girma Adam, Ashokkumar Srinivasan, Chun-Biao Li   +5 more
wiley   +1 more source

Milnor’s Conjecture on Monotonicity of Topological Entropy: results and questions [PDF]

, 2014
02.08.13 KB. Author has recieved permission from publisher to add the submitted version to Spiral.This note discusses Milnor’s conjecture on monotonicity of entropy and gives a short exposition of the ideas used in its proof which was obtained in joint ...
van Strien, S, Sebastian van Strien
core   +1 more source

Completely inapproximable monotone and antimonotone parameterized problems [PDF]

Journal of Computer and System Sciences, 2010
We prove that weighted circuit satisfiability for monotone or antimonotone circuits has no fixed-parameter tractable approximation algorithm with any approximation ratio function $ρ$, unless $FPT\neq W[1]$. In particular, not having such an fpt-approximation algorithm implies that these problems have no polynomial-time approximation algorithms with ...
openaire   +3 more sources