Results 151 to 160 of about 471,361 (266)
Dimer models and conformal structures
Communications on Pure and Applied Mathematics, Volume 79, Issue 2, Page 340-446, February 2026.Abstract Dimer models have been the focus of intense research efforts over the last years. Our paper grew out of an effort to develop new methods to study minimizers or the asymptotic height functions of general dimer models and the geometry of their frozen boundaries.
Kari Astala +3 more
wiley +1 more source
Nonlinear Amplitude Maxwell-Dirac Equations. Optical Leptons
, 2003 We apply the method of slowly-varying amplitudes of the electrical and magnet fields to integro-differential system of nonlinear Maxwell equations. The equations are reduced to system of differential Nonlinear Maxwell amplitude Equations (NME). Different orders of dispersion of the linear and nonlinear susceptibility can be estimated. This method allow
openaire +2 more sources
Magnetic Resonance in Medicine, Volume 95, Issue 2, Page 1044-1067, February 2026.Abstract Purpose Lower field strength scanners with large bore size or complex geometries, and scanners with stronger gradient systems experience increased gradient nonlinearity and concomitant fields, each of which causes distortions in EPI. Current correction approaches based on image‐domain interpolation introduce undesirable spatial blurring.
Nam G. Lee +2 more
wiley +1 more source
Semiclassical states of nonlinear Dirac equations with degenerate potential
Annali di Matematica Pura ed Applicata, 2019 Xu Zhang, Zhi-Qiang Wang
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A general approach to the linear stability of viscoelastic shear‐flows
ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Volume 106, Issue 2, February 2026.Abstract The present work provides an in‐depth analysis of the linear stability theory of viscoelastic shear‐flows, based upon a constitutive equation of the fading memory type. The particular model considered herein was introduced by Kenneth Walters through the integration of classical rate‐type fluids in a convected frame (Walters 1962).
Johannes Conrad, Martin Oberlack
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Water Resources Research, Volume 62, Issue 2, February 2026.Abstract Intermittent flow is a widely recognized phenomenon across various fields, characterized by the spatial‐temporal fluctuations of the two‐phase topology. However, its implications for solute dispersion and mixing remain insufficiently understood.
Kai Zhang +5 more
wiley +1 more source
Water Resources Research, Volume 62, Issue 2, February 2026.Abstract Groundwater drought represents one of the most pervasive and difficult‐to‐monitor forms of water scarcity, threatening the reliability of freshwater supply for over 2 billion people worldwide, agricultural productivity, and ecosystem health.
Parnian Ghaneei, Hamid Moradkhani
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Role of Dead‐End Regions and Transmitting Pores in Mixing and Reactivity in Unsaturated Porous Media
Water Resources Research, Volume 62, Issue 2, February 2026.Abstract Mixing‐limited reactions in unsaturated porous media are controlled by complex pore‐scale processes arising from air and water phases coexistence. Decreasing water saturation increases flow heterogeneity, creating preferential flow paths and dead‐end regions (DER) that alter solute distribution and reaction efficiency.
Saif Farhat +2 more
wiley +1 more source
Proceedings of the London Mathematical Society, Volume 132, Issue 2, February 2026.Abstract This paper investigates boundary‐layer solutions of the singular Keller–Segel system (proposed in Keller and Segel [J. Theor. Biol. 30 (1971), 377–380]) in multi‐dimensional domains, which describes cells' chemotactic movement toward the concentration gradient of the nutrient they consume, subject to a zero‐flux boundary condition for the cell
Jose A. Carrillo +3 more
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Stochastic Resonance Elucidates the Emergence and Periodicity Transition of Glacial Cycles
Geophysical Research Letters, Volume 53, Issue 1, 16 January 2026.Abstract Glacial cycles emerged with a 41‐kyr period after the Pliocene and later intensified with a 100‐kyr period in the mid‐Pleistocene, which were attributed to Earth's orbital variations. However, no significant changes in the orbital forcing were found at the two transitions, and the forcing was too small to drive these cycles. Here, a stochastic
Tian Xu, Gabriel Katul, Shineng Hu
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