Št. zadetkov: 77
Izvirni znanstveni članek
Oznake:
chaos;chaotic map;bifurcation diagram;density diagram;distribution;histogram;nonlinear system;bifurcation;
This work presents a numerical method to color the bifurcation diagram of any discrete map, based on the distribution of the map’s values in its domain. This density-colored diagram reveals information on the uniformity of the map’s value distribution across its domain set, as a bifurcation paramete ...
Leto:
2023
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Izvirni znanstveni članek
Oznake:
chaos;discrete map;hidden attractor;fixed point;equilibrium;chaotification;nonlinear system;pseudo-random bit generator;
In this work, a family of piecewise chaotic maps is proposed. This family of maps is parameterized by the nonlinear functions used for each piece of the mapping, which can be either symmetric or non-symmetric. Applying a constraint on the shape of each piece, the generated maps have no equilibria an ...
Leto:
2023
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Izvirni znanstveni članek
Oznake:
chaos;sine map;eqapproximation;Taylor expansion;chaotification;pseudo-random bit generator;nonlinear system;
In this work, we consider polynomial approximations of the sine map, which is known to be chaotic. The dynamics of the maps obtained for different orders of approximations are studied using classical tools. Comparison of the behavior is made through common bifurcation diagrams, 0–1 test results, Lya ...
Leto:
2023
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Izvirni znanstveni članek
Oznake:
chaos;cryptography;image encryption;text encryption;compression;encryption;nonlinear system;
Currently, chaotic cryptography is mainly concentrated on image encryption. Once-popular stream-encryption algorithms, e.g., textual data, are now rarely considered. This article studies how chaotic image-encryption algorithms can be used to encrypt text. The proposed approach to this problem consis ...
Leto:
2022
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Objavljeni povzetek znanstvenega prispevka na konferenci
Oznake:
chaos;chaotification;nonlinear system;attractor;pseudo-random bit generator;PRBG;
In a recent work by Rezende, Leys & Bouali (2022), the authors proposed the technique of rearranging the time series of chaotic trajectories, in order to generate visually stunning new attractors. These attractors were termed ‘false’, as they do not correspond to a solution of a chaotic system, but ...
Leto:
2023
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Izvirni znanstveni članek
Oznake:
chaos;pseudo-random bit generator;nonlinear system;encryption;
In this work the study and use of a continuous chaotic dynamical system with no equilibria is presented. In more details the proposed 3-D system has two hyperbolic tangent terms and it has both self excited and hidden attractors. The behavior of the system is studied numerically through phase portra ...
Leto:
2024
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Izvirni znanstveni članek
Oznake:
chaos;chaotification;nonlinear system;encryption;
Many drawbacks in chaos-based applications emerge from the chaotic maps' poor dynamic properties. To address this problem, in this paper a chaotification model based on modulo operator and secant functions to augment the dynamic properties of existing chaotic maps is proposed. It is demonstrated tha ...
Leto:
2022
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Izvirni znanstveni članek
Oznake:
chaos;nonlinear system;memristor;nonlinear circuit;circuit implementation;
In this paper, a new chaotic memristor system is developed based on a well-known nonlinear circuit. By replacing the nonlinear positive conductance of Shinriki's circuit with a memristor emulator, the new simple chaotic circuit can reduce the number of active elements and reduce power consumption. A ...
Leto:
2023
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Izvirni znanstveni članek
Oznake:
synchronization;passivity control;sliding mode control, control;uncertainties;perturbation;disturbances;chaos;nonlinear system;microcontroller;
The problem of passivity-based sliding mode control is considered, for the unified chaotic system having uncertainties and perturbations. Using a combination between sliding mode method and the passivity method, an appropriate switching surface for the uncertain and perturbed system is designed, and ...
Leto:
2021
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Izvirni znanstveni članek
Oznake:
chaos;pseudo-random bit generator;PRBG;encryption;cryptography;nonlinear system;
This work presents a simple method of designing pseudo-random bit generator by generating multiple bits per iteration from the decimal part of a chaotic map. This is done by extracting the decimal part of the state in each iteration and comparing each digit separately to a threshold value. This way, ...
Leto:
2020
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)