Results 31 to 40 of about 65,659 (224)
Rigorous verification of Hopf bifurcations via desingularization and continuation [PDF]
, 2021 In this paper we present a general approach to rigorously validate Hopf bifurcations as well as saddlenode bifurcations of periodic orbits in systems of ODEs.
Queirolo, Elena +7 more
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Global Hopf Bifurcation Analysis for a Time-Delayed Model of Asset Prices
Discrete Dynamics in Nature and Society, 2010 A time-delayed model of speculative asset markets is investigated to discuss the effect of time delay and market fraction of the fundamentalists on the dynamics of asset prices.
Ying Qu, Junjie Wei
doaj +1 more source
HOPF BIFURCATIONS AND THEIR DEGENERACIES IN CHUA'S EQUATION
, 2011 We perform an analytical study of the Hopf bifurcations and their degeneracies in Chua's equation. In the case of the equilibrium at the origin only codimension-two Hopf bifurcations appear.
MANUEL MERINO +3 more
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MathematicsThis paper is devoted to the study of the dynamical behaviors of a socioeconomic mathematical model with a discrete time delay. The model includes economic growth, corruption, and unemployment, which are some of the main factors driving the economy of a ...
Ogochukwu Ifeacho +1 more
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Hopf Bifurcation of a Differential-Algebraic Bioeconomic Model with Time Delay
Journal of Applied Mathematics, 2012 We investigate the dynamics of a differential-algebraic bioeconomic model with two time delays. Regarding time delay as a bifurcation parameter, we show that a sequence of Hopf bifurcations occur at the positive equilibrium as the delay increases.
Xiaojian Zhou, Xin Chen, Yongzhong Song
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Advanced Science, EarlyView.Organic electrochemical transistors bridge biological ionic signaling and neuromorphic computation through volumetric electrochemical gating. This review connects Organic mixed ionic–electronic conductor materials, device architectures, and manufacturing technologies to show how geometry, ion transport, and fabrication strategies program plasticity ...
Hyunjin Lee +5 more
wiley +1 more source
Subcritical Hopf bifurcations in a car-following model with reaction-time delay [PDF]
, 2005 A nonlinear car-following model of highway traffic is considered, which includes the reaction-time delay of drivers. Linear stability analysis shows that the uniform flow equilibrium of the system loses its stability via Hopf bifurcations and thus ...
Orosz, G, Stepan, G
core
Hopf bifurcations in dynamics of excitable systems
, 2023 A general FitzHugh–Rinzel model, able to describe several neuronal phenomena, is considered. Linear stability and Hopf bifurcations are investigated by means of the spectral equation for the ternary autonomous dynamical system and the analysis is ...
Monica De Angelis, De Angelis, Monica
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Dynamical analysis of a competition and cooperation system with multiple delays
Boundary Value Problems, 2018 This paper is concerned with a competition and cooperation system with multiple constant delays relating to economic enterprise. The stability of the unique positive equilibrium is investigated and the existence of Hopf bifurcations is demonstrated by ...
Xin Zhang, Zizhen Zhang, Matthew J. Wade
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Demulsifying agent simplified model for offshore oil wells
The Canadian Journal of Chemical Engineering, EarlyView.Abstract This article addresses key challenges in offshore petroleum production caused by multiphase flow instabilities, such as slug flow and emulsion formation. Traditionally, severe slugging is mitigated by increasing wellhead backpressure through partial choke valve closure. In this context, a simplified dynamic model—the fast offshore wells model (
Fernanda Bernardi de Souza +5 more
wiley +1 more source