Results 81 to 90 of about 2,221 (187)
Nonlinear Dynamic Analysis on Dual‐Rotor‐Bearing‐Casing System for Marine Gas Turbine
Complexity, Volume 2024, Issue 1, 2024.Taking the marine gas turbine as a research background, a dual‐rotor‐bearing‐casing system model was established considering the bearing nonlinearities and unbalanced excitation. Based on Lagrange’s equation of motion and rotor dynamics theory, the effects of key parameters such as radial clearance of intershaft bearing, rotor mass eccentricity, and ...
Zhikai Xing +5 more
wiley +1 more source
Stability and Cycles in a Cobweb Model with Heterogeneous Expectations [PDF]
We investigate the dynamics of a cobweb model with heterogeneous beliefs, generalizing the example of Brock and Hommes (1997). We examine situations where the agents form expectations by using either rational expectations, or a type of adaptive ...
Clem Tisdell +2 more
core
Complexity, Volume 2024, Issue 1, 2024.This study examines the discrete prey‐predator model in the sense of Caputo fractional derivative by incorporating harvesting on the predator population and immigration on the prey population. We establish the topological categories of the model’s fixed points.
Md. Jasim Uddin +2 more
wiley +1 more source
Stability and Bifurcation of a Class of Discrete-Time Cohen-Grossberg Neural Networks with Delays
Discrete Dynamics in Nature and Society, 2011 A class of discrete-time Cohen-Grossberg neural networks with delays is investigated in this paper. By analyzing the corresponding characteristic equations, the asymptotical stability of the null solution and the existence of Neimark-Sacker bifurcations ...
Qiming Liu, Rui Xu, Zhiping Wang
doaj +1 more source
Shrinking Point Bifurcations of Resonance Tongues for Piecewise-Smooth, Continuous Maps
, 2008 Resonance tongues are mode-locking regions of parameter space in which stable periodic solutions occur; they commonly occur, for example, near Neimark-Sacker bifurcations.
Banerjee S +11 more
core +1 more source
STABILITY AND NEIMARK-SACKER BIFURCATION OF A SEMI-DISCRETE POPULATION MODEL
Journal of Applied Analysis & Computation, 2014 Summary: In this paper, a semi-discrete model is derived for a nonlinear simple population model, and its stability and bifurcation are investigated by invoking a key lemma we present. Our results display that a Neimark-Sacker bifurcation occurs in the positive fixed point of this system under certain parametric conditions. By using the center manifold
Wang, Cheng, Li, Xianyi
openaire +2 more sources
Analysis of the Dynamical Properties of Discrete Predator‐Prey Systems with Fear Effects and Refuges
Discrete Dynamics in Nature and Society, Volume 2024, Issue 1, 2024.This paper examines the dynamic behavior of a particular category of discrete predator‐prey system that feature both fear effect and refuge, using both analytical and numerical methods. The critical coefficients and properties of bifurcating periodic solutions for Flip and Hopf bifurcations are computed using the center manifold theorem and bifurcation
Wei Li +3 more
wiley +1 more source
Dynamic Analysis of a Simple Cournot Duopoly Model Based on a Computed Cost
Discrete Dynamics in Nature and Society, Volume 2024, Issue 1, 2024.The paper is organized to study some mathematical properties and dynamics of a simple Cournot duopoly game based on a computed quadratic cost. The time evolution of this game is described by a two‐dimensional noninvertible discrete time map using the bounded rationality mechanism.
S. S. Askar +2 more
wiley +1 more source
Discontinuity induced bifurcations of non-hyperbolic cycles in nonsmooth systems
, 2009 We analyse three codimension-two bifurcations occurring in nonsmooth systems, when a non-hyperbolic cycle (fold, flip, and Neimark-Sacker cases, both in continuous- and discrete-time) interacts with one of the discontinuity boundaries characterising the ...
Alessandro Colombo +3 more
core +1 more source
Cooperative hunting in a discrete predator-prey system
, 2018 We propose and investigate a discrete-time predator-prey system with cooperative hunting in the predator population. The model is constructed from the classical Nicholson-Bailey host-parasitoid system with density dependent growth rate.
Chow, Yunshyong +2 more
core +1 more source