Results 21 to 30 of about 8,505 (264)

Van der Pol Equation with a Large Feedback Delay

open access: yesMathematics, 2023
The well-known Van der Pol equation with delayed feedback is considered. It is assumed that the delay factor is large enough. In the study of the dynamics, the critical cases in the problem of the stability of the zero equilibrium state are identified ...
Sergey Kashchenko
doaj   +1 more source

Singular Perturbation of Nonlinear Systems with Regular Singularity [PDF]

open access: yesDiscrete Dynamics in Nature and Society, 2018
We extend Balser-Kostov method of studying summability properties of a singularly perturbed inhomogeneous linear system with regular singularity at origin to nonlinear systems of the form εzf′=Fε,z,f with F a Cν-valued function, holomorphic in a polydisc D-ρ×D-ρ×D-ρν.
Domingos H. U. Marchetti   +1 more
openaire   +4 more sources

Avionic Air Data Sensors Fault Detection and Isolation by means of Singular Perturbation and Geometric Approach

open access: yesSensors, 2017
Singular Perturbations represent an advantageous theory to deal with systems characterized by a two-time scale separation, such as the longitudinal dynamics of aircraft which are called phugoid and short period.
Paolo Castaldi   +2 more
doaj   +1 more source

Rotating Singular Perturbations of the Laplacian [PDF]

open access: yesAnnales Henri Poincaré, 2004
Minor changes, to appear in Ann. H.
Correggi Michele   +1 more
openaire   +5 more sources

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

open access: yesFEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho   +3 more
wiley   +1 more source

Singular Finsler Double Phase Problems with Nonlinear Boundary Condition

open access: yesAdvanced Nonlinear Studies, 2021
In this paper, we study a singular Finsler double phase problem with a nonlinear boundary condition and perturbations that have a type of critical growth, even on the boundary.
Farkas Csaba   +2 more
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Quasinormal forms for systems of two equations with large delay [PDF]

open access: yesИзвестия высших учебных заведений: Прикладная нелинейная динамика
A system of two equations with delay is considered. The purpose of this work is to study the local dynamics of this system under the assumption that the delay parameter is sufficiently large.
Kashchenko, Sergej Aleksandrovich   +1 more
doaj   +1 more source

AN INTRODUCTION TO SINGULAR PERTURBATIONS

open access: yesNatural Resource Modeling, 2000
ABSTRACT. In this article we discuss the asymptotic analysis of so‐called singularly perturbed differential equations. We begin by discussing some very simple nonmathematical examples, and then proceed to two mathematical examples, namely, the well‐known example of Friedrichs and a problem of John Mahony's.
openaire   +1 more source

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

open access: yesFEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil   +4 more
wiley   +1 more source

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