Results 91 to 100 of about 4,323 (217)
A New No-Equilibrium Chaotic System and Its Topological Horseshoe Chaos
Advances in Mathematical Physics, 2016 A new no-equilibrium chaotic system is reported in this paper. Numerical simulation techniques, including phase portraits and Lyapunov exponents, are used to investigate its basic dynamical behavior.
Chunmei Wang +3 more
doaj +1 more source
The Journal of Physiology, EarlyView.Abstract figure legend Time‐resolved estimation of cardiac rhythmicity parameters. A pipeline is shown for the estimation of the fluctuating cardiac parameters, based on the Poincaré plot. The Poincaré plot illustrates the successive changes in interbeat intervals (IBI).
Diego Candia‐Rivera +3 more
wiley +1 more source
Cannabinoid exposure during pregnancy: Cardiorespiratory effects and offspring outcomes
The Journal of Physiology, EarlyView.Abstract figure legend Prenatal exposure to cannabinoids has been investigated across human and animal studies to understand its impact on physiological development. Evidence suggests that early‐life cannabinoid exposure influence multiple developmental processes, extending beyond neurodevelopmental outcomes to potentially affect placental function ...
Luis Gustavo A. Patrone +1 more
wiley +1 more source
Breathing irregularities and postnatal hypoxaemia in an experimental model of essential hypertension
The Journal of Physiology, EarlyView.Abstract figure legend Neonatal spontaneously hypertensive rats (SHRs) exhibit inherent respiratory dysfunction in early life, including oscillatory breathing patterns and apnoeic events that cause oxygen desaturation and brain hypoxia, in addition to an impaired hypoxic ventilatory response.
Beatriz N. Vieira +7 more
wiley +1 more source
Towards Noncommutative Linking Numbers via the Seiberg-Witten Map
Advances in Mathematical Physics, 2015 Some geometric and topological implications of noncommutative Wilson loops are explored via the Seiberg-Witten map. In the abelian Chern-Simons theory on a three-dimensional manifold, it is shown that the effect of noncommutativity is the appearance of ...
H. García-Compeán +2 more
doaj +1 more source
Stability analysis of second-order sliding mode control systems with input-delay using Poincaré map [PDF]
, 2013 This note discusses the stability of dynamical systems with input-delay under the second-order sliding mode control algorithm. Poincaré Map is constructed to analyze the switching dynamics and to derive the stability conditions.
Xinghuo Yu (18029455) +2 more
core
Limit Cycle Bifurcations from a Nilpotent Focus or Center of Planar Systems
Abstract and Applied Analysis, 2012 We study analytic properties of the Poincaré return map and generalized focal values of analytic planar systems with a nilpotent focus or center. We use the focal values and the map to study the number of limit cycles of this kind of systems and obtain ...
Maoan Han, Valery G. Romanovski
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Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.ABSTRACT Stochastic Galerkin methods offer unexplored potential for the numerical simulation of parabolic problems with random variables, in particular if they are combined with variational discretizations of the space and time variables. Due to the high dimensionality, the solution of the arising algebraic systems do not become feasible without ...
Moataz Dawor +2 more
wiley +1 more source
Chattering analysis of time-delayed second-order sliding mode control systems using poincaré map [PDF]
, 2010 In this paper, chattering in a time-delayed second order sliding mode control (2-SMC) system is analyzed using the Poincaré map method. Convergence of the system under arbitrary time-delay is proved. The switching patterns are explored. The existence and
Yu, Xing Huo. +5 more
core
Infinitely Many Periodic Solutions of Duffing Equations with Singularities via Time Map
Abstract and Applied Analysis, 2014 We study the periodic solutions of Duffing equations with singularities x′′+g(x)=p(t). By using Poincaré-Birkhoff twist theorem, we prove that the given equation possesses infinitely many positive periodic solutions provided that g satisfies the singular
Tiantian Ma, Zaihong Wang
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