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The Chaotic Behavior of the Spread of Infection During the COVID-19 Pandemic in the United States and Globally [PDF]

open access: yesIEEE Access, 2021
In December 2019, China announced the breakout of a new virus identified as coronavirus SARS-CoV-2 (COVID-19), which soon grew exponentially and resulted in a global pandemic.
Nabin Sapkota   +7 more
doaj   +2 more sources

Dynamic Analysis and Control of a Financial System with Chaotic Behavior Including Fractional Order

open access: yesFractal and Fractional, 2023
This paper presents the results of investigating the dynamics of an economic system with chaotic behavior and a suboptimal control proposal to suppress the chaotic behavior.
Angelo M. Tusset   +4 more
doaj   +3 more sources

An Improved Absolute-Cosine Chaotification Model and Its Simple Application in PRNG

open access: yesIEEE Access, 2023
Chaotic systems are widely used in various aspects such as information security, signal processing, and synchronous control. The structural complexity and the chaotic behavior of chaotic systems are two significant factors affecting their practical ...
Feng Zhang   +4 more
doaj   +1 more source

New evidence of transient complex oscillations in a closed, well-stirred belousov-zhabotinsky system [PDF]

open access: yesJournal of the Serbian Chemical Society, 2006
Some new experimental evidence of complex irregular oscillations in the Belousov-Zhabotinsky reaction realized in a batch reactor is presented. The results were obtained under relatively low cerium and malonic acid concentrations.
Kolar-Anić Ljiljana   +5 more
doaj   +3 more sources

Non-Linear Models in Economic and Social Research

open access: yesВестник Российского экономического университета имени Г. В. Плеханова, 2022
The article shows differences of presented models from models used in exact science. It analyzes the reasons why for mathematic models of economic and social systems we cannot reach the quantitative correlation of modeling results with indicators of real
L. F. Petrov
doaj   +1 more source

Dynamical Complexity Transitions During High‐Intensity Long Duration Continuous Auroral Activities (HILDCAA) Events: Feature Analysis Based on Neural Network Entropy

open access: yesSpace Weather, 2023
In this study, we examine the dynamical complexity transitions during HILDCAA events. HILDCAA preceded by an Interplanetary Coronal Mass Ejection (ICME) storm recovery phase, HILDCAA preceded by a Corotating Interaction Region (CIR) storm recovery phase,
I. A. Oludehinwa   +4 more
doaj   +1 more source

Research on the Dynamical Behavior of Public Opinion Triggered by Rumor Based on a Nonlinear Oscillator Model

open access: yesEntropy, 2023
In public opinion triggered by rumors, the authenticity of the information remains uncertain, and the main topic oscillates between diverse opinions. In this paper, a nonlinear oscillator model is proposed to demonstrate the public opinion triggered by ...
Wanglai Li   +3 more
doaj   +1 more source

Chaotic behavior in Casimir oscillators: A case study for phase change materials [PDF]

open access: yes, 2017
Casimir forces between material surfaces at close proximity of less than 200 nm can lead to increased chaotic behavior of actuating devices depending on the strength of the Casimir interaction. We investigate these phenomena for phase change materials in
Khorrami, Mohammad   +4 more
core   +2 more sources

NATIONAL FINANCIAL SYSTEM ANALYSIS IN TERMS OF THE COMPLEX SYSTEMS THEORY

open access: yesInternational Journal of Innovative Technologies in Economy, 2020
The recession caused by the pandemic and the vulnerabilities faced by the entire international monetary system and the national financial systems requires a particular approach to analyzing the current situation and the design of new developments.
Viorica Lopotenco
doaj   +1 more source

The Role of Elasticity on Chaotic Dynamics: Insights from Mechanics, Immunology, Ecology, and Rheology

open access: yesMathematics, 2023
Elasticity is commonly associated with regular oscillations, which are prevalent in various systems at different scales. However, chaotic oscillations are rarely connected to elasticity.
Ángela Jiménez-Casas   +2 more
doaj   +1 more source

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