Results 51 to 60 of about 13,882 (205)

The Bifurcation of Two Invariant Closed Curves in a Discrete Model

open access: yesDiscrete Dynamics in Nature and Society, 2018
A discrete population model integrated using the forward Euler method is investigated. The qualitative bifurcation analysis indicates that the model exhibits rich dynamical behaviors including the existence of the equilibrium state, the flip bifurcation,
Yingying Zhang, Yicang Zhou
doaj   +1 more source

Laser Mode Bifurcations Induced by $\mathcal{PT}$-Breaking Exceptional Points

open access: yes, 2018
A laser consisting of two independently-pumped resonators can exhibit mode bifurcations that evolve out of the exceptional points (EPs) of the linear system at threshold.
Chong, Y. D., Wang, Q. J., Zhu, B. F.
core   +1 more source

Comparison of Signal‐ and Volume‐Based Ventilation‐Weighted Assessment Using 3D FLORET UTE MRI in Patients With Various Pulmonary Disease

open access: yesMagnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose 3D free‐breathing, proton, contrast‐agent‐free MR methods are increasingly used for pulmonary ventilation‐weighted measurements. The methods are split between: (1) signal‐based, which rely on lung parenchyma signal changes during respiration, and (2) volume‐based that utilize the Jacobian determinant of deformation fields from the ...
Filip Klimeš   +12 more
wiley   +1 more source

Chaos Control, Codimension-One and Codimension-Two 1 : 2 Strong Resonance Bifurcation Analysis of a Predator-Prey Model with Holling Types I and III Functional Responses

open access: yesComplexity
We study the existence of fixed points, local stability analysis, bifurcation sets at fixed points, codimension-one and codimension-two bifurcation analysis, and chaos control in a predator-prey model with Holling types I and III functional responses. It
Abdul Qadeer Khan   +3 more
doaj   +1 more source

Chaotic dynamics of the fractional order Schnakenberg model and its control

open access: yesMathematics in Applied Sciences and Engineering, 2023
The Schnakenberg model is thought to be the Caputo fractional derivative. In order to create caputo fractional differential equations for the Schnakenberg model, a discretization process is first used.
Md. Jasim Uddin, S. M. Sohel Rana
doaj   +1 more source

Connecting period-doubling cascades to chaos [PDF]

open access: yes, 2010
The appearance of infinitely-many period-doubling cascades is one of the most prominent features observed in the study of maps depending on a parameter. They are associated with chaotic behavior, since bifurcation diagrams of a map with a parameter often
Sander, Evelyn, Yorke, James A.
core  

Classical and Quantum Gravity in 1+1 Dimensions, Part III: Solutions of Arbitrary Topology

open access: yes, 1996
All global solutions of arbitrary topology of the most general 1+1 dimensional dilaton gravity models are obtained. We show that for a generic model there are globally smooth solutions on any non-compact 2-surface.
Ashtekar A   +23 more
core   +1 more source

Bilateral Transcranial Doppler Monitoring During Neonatal Cardiac Surgery; Guidance for Clinical and Scientific Use

open access: yesPediatric Anesthesia, EarlyView.
ABSTRACT Introduction Neonates undergoing cardiac surgery face a high risk of neurological injury and neurodevelopmental complications. Transcranial Doppler monitoring is used and validated in adults to measure cerebral blood flow and can provide valuable insights into cerebral perfusion in neonates.
B. V. Martherus   +11 more
wiley   +1 more source

Empirical assessment of bifurcation regions within new Keynesian models [PDF]

open access: yes
As is well known in systems theory, the parameter space of most dynamic models is stratified into subsets, each of which supports a different kind of dynamic solution.
Barnett, William A., Duzhak, Evgeniya A.
core   +4 more sources

Some Bifurcations of Codimensions 1 and 2 in a Discrete Predator–Prey Model with Non-Linear Harvesting

open access: yesMathematics
This paper delves into the dynamics of a discrete-time predator–prey system. Initially, it presents the existence and stability conditions of the fixed points.
Ming Liu, Linyi Ma, Dongpo Hu
doaj   +1 more source

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