Št. zadetkov: 23
Izvirni znanstveni članek
Oznake:
chaos;pseudo-random bit generator;encryption;image encryption;cryptography;fuzzy number;
This paper investigates the issue of chaos-based image encryption. Based on the z-shaped fuzzy number, the exponential function, and
the modulo operator, a 1-D chaotic map is constructed and studied. This map contains areas with constant chaotic behavior and high
Lyapunov exponent values. A statis ...
Leto:
2024
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Objavljeni znanstveni prispevek na konferenci
Oznake:
chaos;nonlinear system;path planning;UAV;area exploration;area coverage;surveillance;
This research focuses on the problem of area surveillance, using a UAV with a mounted camera that is controlled chaotically. The chaotic motion of the camera is performed by using the values of a chaotic map, to generate random rotation angles for the camera head, which periodically captures photos ...
Leto:
2021
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)
Samostojni znanstveni sestavek ali poglavje v monografski publikaciji
Oznake:
chaos;nonlinear system;bifurcation;cancer;tumors;modeling;
In this chapter, a new model of a tumor growth is dynamically investigated. The model is presented in a form of a system of three ordinary differential equations, which describe the avascular, vascular, and metastasis tumor growth, respectively. For the investigation of system's dynamics and especia ...
Leto:
2021
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Samostojni znanstveni sestavek ali poglavje v monografski publikaciji
Oznake:
chaos;nonlinear system;tumor;cancer;bifurcation;modeling;human physiology;biological systems;
In this chapter, the dynamics of a system, which describes the effect of the population of the normal cells in the procedure of avascular, vascular, and metastatic tumor growth, is studied. For this reason, a recently new system, which is acquired from a chemical network model, is utilized. The syst ...
Leto:
2022
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Izvirni znanstveni članek
Oznake:
bifurcation;chaos;cancer;immunotherapy;tumors;nonlinear system;
In the present study, the simulation of an immunotherapy effect for a known dynamical system, that describes the process for avascular, vascular, and metastasis tumor growth based on a chemical network model, has been presented. To this end, square signals of various amplitudes have been used, to mo ...
Leto:
2022
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Izvirni znanstveni članek
Oznake:
chaos;nonlinear system;pseudo-random bit generator;path planning;area exploration;robotics;
A simple, short and efficient chaotic path planning algorithm is proposed for autonomous mobile robots, with the aim of covering a given terrain using chaotic, unpredictable motion. The proposed technique utilizes the logistic map with a chaotic tactic that utilizes a modulo function to produce a se ...
Leto:
2020
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Samostojni znanstveni sestavek ali poglavje v monografski publikaciji
Oznake:
chaos;nonlinear system;fuzzy;fuzzy number;chaotification;bifurcation;
In the research on chaotic systems, which are used for cryptography and secure communication schemes, a key characteristic is the introduction of novel chaotic systems, usually by adding complexity to the existing ones in order to ensure security. In this direction, this chapter proposes novel chaot ...
Leto:
2022
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Objavljeni znanstveni prispevek na konferenci
Oznake:
chaos;nonlinear system;path planning;area coverage;area exploration;robotics;pseudo-random bit generator;
This work, presents the design and the implementation of a mobile robot that can cover given workspaces. The motion commands have been produced by a chaotic system which gives high "randomness" to its behavior. For the implementation of the robot a microcontroller has been used (Arduino Uno). Moreov ...
Leto:
2022
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Objavljeni znanstveni prispevek na konferenci
Oznake:
chaos;nonlinear system;encryption;cryptography;image encryption;pseudo-random bit generator;
This paper investigates the issue of chaos-based image encryption. A new one-dimensional piecewise chaotic map based on the z-shaped fuzzy number is proposed and investigated, exhibiting regions of constant chaos and high Lyapunov exponent values. A pseudorandom bit generator based on the novel chao ...
Leto:
2022
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)