Results 71 to 80 of about 5,483 (218)

COHERENCE RESONANCE–INDUCED STOCHASTIC NEURAL FIRING AT A SADDLE-NODE BIFURCATION

, 2011
Coherence resonance at a saddle-node bifurcation point and the corresponding stochastic firing patterns are simulated in a theoretical neuronal model. The characteristics of noise-induced neural firing pattern, such as exponential decay in histogram of ...
CHUNLING WEI, ZHIQIANG LIU, MINGHAO YANG, HUAGUANG GU, WEI REN, HUIMIN ZHANG   +5 more
core   +1 more source

Morphological and molecular evidence reveals a new species of Characidium from the Ucayali‐Urubamba Piedmont, Peru, and novel molecular clades are proposed within the genus

Journal of Fish Biology, Volume 108, Issue 2, Page 584-595, February 2026.
Abstract A new species of Characidium is described from the Urubamba River basin, within the Ucayali‐Urubamba Piedmont ecoregion, Peru. The new species can be readily distinguished from all congeners, except Characidium cacah, Characidium chicoi, Characidium helmeri, Characidium mirim, Characidium nana, Characidium nupelia, Characidium sterbai ...
Leonardo Oliveira‐Silva, Ricardo Britzke, Vanessa Meza‐Vargas, Max H. Hidalgo, Dario Faustino‐Fuster, Claudio Oliveira, Angela Maria Zanata   +6 more
wiley   +1 more source

A New Chaotic System With Two Stable Node-Foci Equilibria and an Unstable Saddle-Focus Equilibrium: Bifurcation and Multistability Analysis, Circuit Design, Voice Cryptosystem Application, and FPGA Implementation

IEEE Access
In the recent years, significant research interest has been devoted in the modelling and applications of chaotic systems with stable equilibria. In this research study, we propose a new 3-D chaotic system with two stable node-foci equilibria and an ...
Talal Bonny, Sundarapandian Vaidyanathan, Wafaa Al Nassan, Fareh Hannachi, Aceng Sambas   +4 more
doaj   +1 more source

Mathematical Modeling of Forest Biomass Dynamics: A Focus on Seedling Contribution in Case of Wonsho Woreda (Kileye and Gishere), Sidama Regional State, Ethiopia

Natural Resource Modeling, Volume 39, Issue 1, February 2026.
ABSTRACT In this study, we introduce a mathematical ecology model that describes the interactions among forest biomass, the human population, various development activities, and seedlings. The study applies modified Leslie‐Gower and Holling type II functional responses to capture these interactions.
Shegena Geshele Donka, Mohammed Yiha Dawed, Kiros Gebrearegawi Kebedow   +2 more
wiley   +1 more source

Memristive Chaotic Circuit for Information Processing Through Time

Advanced Intelligent Systems, Volume 8, Issue 1, January 2026.
A chaotic circuit that exploits the nonlinear characteristics of a memristive device is realized in hardware. The circuit response evolves through simple periodic, multiperiod, and chaotic regimes. The circuit also displays fading memory property. Finally, the circuit is used in a reservoir computing architecture to demonstrate nonlinear classification
Manuel Escudero, Sabina Spiga, Stefano Brivio   +2 more
wiley   +1 more source

Backward bifurcation and saddle-node bifurcation in virus-immune dynamics

, 2021
Recently, Wang and Xu [ Appl. Math. Lett. 78 (2018) 105-111] studied thresholds and bi-stability in virus-immune dynamics. In this paper, we show there also exist backward bifurcation and saddle node bifurcation in this model. Our investigation demonstrates the existence of post-bifurcation phenomenon in the system when the immune strength was selected
Wang, Tengfei, Wang, Shaoli, Xu, Fei
openaire   +2 more sources

Towards global models near homoclinic tangencies of dissipative diffeomorphisms [PDF]

, 1998
A representative model of a return map near homoclinic bifurcation is studied. This model is the so-called fattened Arnold map, a diffeomorphism of the annulus. The dynamics is extremely rich, involving periodicity, quasiperiodicity and chaos. The method
Broer, H; id_orcid, Simó, Carles,, Simo, C, Tatjer, JC, Broer, Henk,, Broer, H, Tatjer, Joan Carles,   +6 more
core   +1 more source

The Effect of Electroosmosis on the Peristaltic Transport of Eyring Powell Fluid: Bifurcation Analysis of the Non‐Linear Dynamical System

Engineering Reports, Volume 8, Issue 1, January 2026.
The mathematical investigation aims to study the physiological flow inside the channel with an electric double layer (EDL) of zeta potential. The flow is assumed to be in a horizontal two‐dimensional channel containing Eyring Powell fluid like blood at a specific temperature.
Aiman Mushtaq, Sohail Nadeem, Jehad Alzabut, Salman Saleem, B. Zigta   +4 more
wiley   +1 more source

Saddle-node bifurcations of multiple homoclinic solutions in ODES

Discrete and Continuous Dynamical Systems - B, 2017
The authors study periodic perturbations of differential equations possessing a homoclinic orbit along which the tangent spaces of the corresponding stable and unstable manifolds intersect in a three-dimensional space. This paper can be seen as a continuation of the work ``Multiple transverse homoclinic solutions near a degenerate homoclinic orbit ...
Lin, Xiao-Biao, Zhu, Changrong
openaire   +1 more source

Near Saddle-Node Bifurcation Behavior as Dynamics in Working Memory for Goal-Directed Behavior

, 1998
In consideration of working memory as a means for goal-directed behavior in nonstationary environments, we argue that the dynamics of working memory should satisfy 3 Current correspondence: RIKEN, Frontier Research Program, Lab.
Hiroyuki Nakahara, Kenji Doya
core   +2 more sources