Results 61 to 70 of about 54,244 (231)
Pattern Formation and Nonlinear Waves Close to a 1:1 Resonant Turing and Turing–Hopf Instability
Studies in Applied Mathematics, Volume 155, Issue 5, November 2025.ABSTRACT In this paper, we analyze the dynamics of a pattern‐forming system close to simultaneous Turing and Turing–Hopf instabilities, which have a 1:1 spatial resonance, that is, they have the same critical wave number. For this, we consider a system of coupled Swift–Hohenberg equations with dispersive terms and general, smooth nonlinearities.
Bastian Hilder, Christian Kuehn
wiley +1 more source
Axiomatic Approach in the Analytic Theory of Singular Perturbations
Axioms, 2020 Introduced by S.A. Lomov, the concept of a pseudoanalytic (pseudoholomorphic) solution laid the foundation for the development of the singular perturbation analytical theory.
Margarita Besova, Vasiliy Kachalov
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Current Practices for Analyzing Soils and Sediments via Mössbauer Spectroscopy
Journal of Plant Nutrition and Soil Science, Volume 188, Issue 5, Page 742-773, October 2025.ABSTRACT Environmental scientists are increasingly returning to Mössbauer spectroscopy (MBS) to reveal details about iron (Fe)‐bearing phases in soils and sediments. MBS is particularly powerful at distinguishing between Fe(II) and Fe(III) and, given appropriate background information, can offer exceptionally precise information on Fe speciation in ...
Aaron Thompson +9 more
wiley +1 more source
Business Ethics, the Environment &Responsibility, Volume 34, Issue 4, Page 1412-1431, October 2025.Abstract Constructive Deviant Behavior (CDB) raises an ethical dilemma that poses a significant challenge within the realm of business ethics. This ethical dilemma is the extent to which individuals should be allowed, or even encouraged, to challenge established norms in the name of organizational and stakeholder well‐being before compromising ethical ...
Irina‐Alina Popescu +2 more
wiley +1 more source
Abstract and Applied Analysis, 2020 In this paper, a class of linear second-order singularly perturbed differential-difference turning point problems with mixed shifts exhibiting two exponential boundary layers is considered. For the numerical treatment of these problems, first we employ a
Wondwosen Gebeyaw Melesse +2 more
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A Numerical Slow Manifold Approach to Model Reduction for Optimal Control of Multiple Time Scale ODE [PDF]
, 2013 Time scale separation is a natural property of many control systems that can be ex- ploited, theoretically and numerically. We present a numerical scheme to solve optimal control problems with considerable time scale separation that is based on a model ...
Lebiedz, Dirk, Rehberg, Marcel
core
Disentangling the effects of climate change in a mountain lake through community structure analysis
Limnology and Oceanography, Volume 70, Issue 8, Page 2142-2157, August 2025.Abstract Pressures of climate change may trigger regime shifts in ecosystems. Identifying signs of these pressures before the critical transition remains challenging, and it could be useful to anticipate the regime shift. In this research, while exploiting the case of a lacustrine ecosystem, which passed from an unvegetated, phytoplankton‐dominated ...
Giulia Bertoletti +3 more
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Non-Polynomial Spline for Singularly Perturbed Differential-Difference Equation with Mixed Shifts and Layer Behavior [PDF]
International Journal of Mathematical, Engineering and Management SciencesVarious physical phenomena give rise to singularly perturbed differential equations with mixed shifts. Due to multiple parameters, singularly perturbed mixed delay boundary value problems are challenging to solve.
Shilpa Malge , Ram Kishun Lodhi
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Singularly perturbed hyperbolic problems on metric graphs: asymptotics of solutions
, 2017 We are interested in evolution phenomena on star-like networks composed of several branches which vary considerably in physical properties. The initial boundary value problem for singularly perturbed hyperbolic differential equation on a metric graph is ...
Flyud, Volodymyr, Golovaty, Yuriy
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Parametrized Singularly Perturbed Boundary Value Problems
Journal of Mathematical Analysis and Applications, 1994 Boundary value problems for some \((\varepsilon,\lambda)\)-families of singularly perturbed higher order ordinary differential equations are considered. The author applies an approach of his paper [J. Differ. Equation 106, 312-331 (1993)] to give the lower estimates for the number of parameters \(\lambda\in \mathbb{R}^ m\) for which those equations ...
openaire +2 more sources