BarekengThis research develops a mathematical model of a natural phenomenon, namely sea snails that can release toxins (allelopathy) so that non-toxic sea snails become afraid. In addition, toxic and non-toxic sea snails share biotic resources.
Mifta Kharisma Dewi +2 more
doaj +1 more source
Fluid‐Structure Interaction Simulation of Mitral Valve Structures in a Left Ventricle Model
International Journal for Numerical Methods in Engineering, Volume 126, Issue 8, 30 April 2025.ABSTRACT Simulations of blood flow in patient‐specific models of heart ventricles is a rapidly developing field of research, showing promise to improve future treatment of heart diseases. Fluid‐structure interaction simulation of the mitral valve, with its complex structure including leaflets, chordae tendineae, and papillary muscles, provides ...
Joel Kronborg, Johan Hoffman
wiley +1 more source
Codimension two and three bifurcations of a predator–prey system with group defense and prey refuge
Nonlinear Analysis, 2015 A predator–prey system with nonmonotonic functional response and prey refuge is considered. We mainly obtain that the system has the bifurcations of cusp-type codimension two and three, these illustrate that the dynamic behaviors of the model with prey ...
Xia Liu, Jinling Wang
doaj +1 more source
“Assessing Predictability of Environmental Time Series With Statistical and Machine Learning Models”
Environmetrics, Volume 36, Issue 2, March 2025.ABSTRACT The relative merits of machine learning and statistical methods are discussed recently by Bonas et al. 2004, who raise important open questions for the statistical community regarding the value‐added benefits of data science and the future role of environmental statistics. Specifically, they identify three major knowledge gaps where statistics
Nathaniel K. Newlands +1 more
wiley +1 more source
Using Nyquist or Nyquist-Like Plot to Predict Three Typical Instabilities in DC-DC Converters
, 2012 By transforming an exact stability condition, a new Nyquist-like plot is proposed to predict occurrences of three typical instabilities in DC-DC converters.
Al-Mothafar +24 more
core +1 more source
Bifurcation analysis of a discrete SIS model with bilinear incidence depending on new infection
Mathematical Biosciences and Engineering, 2013 A discrete SIS epidemic model with the bilinear incidence depending on the new infection is formulated and studied.The condition for the global stability of the disease free equilibrium is obtained.The existence of the endemic equilibrium and its ...
Hui Cao, Yicang Zhou, Zhien Ma
doaj +1 more source
Coulomb-actuated microbeams revisited: experimental and numerical modal decomposition of the saddle-node bifurcation. [PDF]
Microsyst Nanoeng, 2021 Melnikov A +7 more
europepmc +1 more source
, 1993 Voltage collapse and blackout can occur in an electric power system when load powers vary so that the system loses stability in a saddle node bifurcation.
I. Dobson, L. Lu
semanticscholar +1 more source
Chaos in driven Alfvén systems: unstable periodic orbits and chaotic saddles [PDF]
Nonlinear Processes in Geophysics, 2007 The chaotic dynamics of Alfvén waves in space plasmas governed by the derivative nonlinear Schrödinger equation, in the low-dimensional limit described by stationary spatial solutions, is studied.
A. C.-L. Chian +5 more
doaj
Complex Dynamics in a Singular Delayed Bioeconomic Model with and without Stochastic Fluctuation
Discrete Dynamics in Nature and Society, 2015 A singular delayed biological economic predator-prey system with and without stochastic fluctuation is proposed. The conditions of singularity induced bifurcation are gained, and a state feedback controller is designed to eliminate such bifurcation ...
Xinyou Meng, Qingling Zhang
doaj +1 more source