Results 61 to 70 of about 1,245,923 (288)

Dynamical system analysis of quintom dark energy model

European Physical Journal C: Particles and Fields, 2018
The present work deals with dynamical system analysis of a quintom model of dark energy. By suitable transformation of variables the Einstein field equations are converted to an autonomous system.
Sudip Mishra, Subenoy Chakraborty
doaj   +1 more source

Synchronization of Analog Neuron Circuits With Digital Memristive Synapses: An Hybrid Approach

Advanced Electronic Materials, EarlyView.
An hybrid circuit mimicking neural units coupled using memristive synapses is introduced. The analog neurons provide flexibility and robustness, and the digital memristive coupling guarantees the full reconfigurability of the interconnection. The onset of a synchronized spiking behavior in two circuits mimicking the Izhikevich neuron is discussed from ...
Lamberto Carnazza, Francesco Maria Esposito, Carlo Famoso, Arturo Buscarino   +3 more
wiley   +1 more source

Dynamical analysis of a complex competitive two-strain epidemic network model with vaccination

Partial Differential Equations in Applied Mathematics
Developing accurate models to replicate epidemic transmission poses a significant challenge for researchers both now and in the foreseeable future.
A. Abdelkhalek, A.H. Abdel Kader, I.L. El-Kalla, A. Elsaid, Amr Elsonbaty, K.S. Nisar   +5 more
doaj   +1 more source

Complex Dynamics in an Evolutionary General Equilibrium Model

Discrete Dynamics in Nature and Society, 2018
We propose an exchange economy evolutionary model with discrete time, in which there are two utility-maximizing groups of agents which differ in the preference structure. Assuming an evolutionary mechanism based on the relative utility values realized by
Ahmad Naimzada, Marina Pireddu
doaj   +1 more source

Hopf bifurcation in a gene regulatory network model : molecular movement causes oscillations [PDF]

, 2014
M.A.J.C. and M.S. gratefully acknowledge the support of the ERC Advanced Investigator Grant 227619, “M5CGS — From Mutations to Metastases: Multiscale Mathematical Modelling of Cancer Growth and Spread”. M.S.
Ptashnyk, Mariya, Marc Sturrock, Ptashnyk, Mariya; id_orcid, Chaplain, Mark A. J., Sturrock, Marc, Mark Chaplain, Chaplain, Mark, Mariya Ptashnyk A, Mark Chaplain A, Marc Sturrock B, Mariya Ptashnyk, Ptashnyk, M, Chaplain, M, Sturrock, M, Chaplain, Mark; id_orcid   +14 more
core   +1 more source

Negative Feedback in Hf0.5Zr0.5O2 Resistive Memory: Feigenbaum Route Toward Two‐Terminal Pseudo‐Random Number Generation and Neural Network Instabilities

Advanced Electronic Materials, EarlyView.
Resistively switching TiN/Hf0.5Zr0.5/Au valance‐change memory devices show period‐doubling bifurcations, arising from competing influences of filamentary counter‐eightwise filamentary switching and eigthwise electrochemical oxygen exchange at the active electrode.
Sebastian Obernberger, Yoandris Gonzalez, Andranik Sarkissian, Christina Schindler, Andreas Ruediger   +4 more
wiley   +1 more source

Design, Control, and Clinical Applications of Magnetic Actuation Systems: Challenges and Opportunities

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This review aims to provide a broad understanding for interdisciplinary researchers in engineering and clinical applications. It addresses the development and control of magnetic actuation systems (MASs) in clinical surgeries and their revolutionary effects in multiple clinical applications.
Yingxin Huo, Lidong Yang, Tiantian Xu, Dong Sun   +3 more
wiley   +1 more source

Utility of SuperCross Microcatheter for Complex Coronary Artery Intervention

Journal of Interventional Cardiology
Conclusions: The utilization of SCM techniques offers distinct advantages in managing complex coronary anatomies, particularly when dealing with highly angulated vessels observed in bifurcation or chronic total occlusion scenarios, as well as ...
Long-Hao Yu, Zhao-Yan Song, Moo-Hyun Kim
doaj   +1 more source

Bifurcation scenarios in semiconductor lasers subject to optical injection [PDF]

, 2007
In the thesis we examine the dynamics of semiconductor lasers subject to optical injection. We study typical bifurcation scenarios, namely the saddle- node and Hopf bifurcations associated with this system. First, the system is investigated analytically,
Marilley, Rachel
core  

Thermally Drawn Bioelectric Catheters: Enabling Proprioceptive Endovascular Navigation

Advanced Intelligent Systems, EarlyView.
This work introduces a novel bioelectric navigation system eliminates the need for harmful fluoroscopy during endovascular surgeries. A bespoke 16‐electrode catheter is fabricated using rapid thermal drawing and laser micro‐machining. Paired with a real‐time tracking algorithm fusing vascular geometry detection and distance estimation, this technology ...
Alex Ranne, Heiko Maier, Jinshi Zhao, Songli Moey, Ayhan Aktas, Manik Chana, Burak Temelkuran, Nassir Navab, Ferdinando Rodriguez y Baena   +8 more
wiley   +1 more source