Results 71 to 80 of about 260,310 (201)
Water Resources Research, Volume 62, Issue 8, August 2026.Abstract Accurate identification of nonaqueous phase liquid (NAPL) contamination sources is critical in pollution management. However, the joint inversion of source characteristics and heterogeneous hydrogeological parameters faces two major challenges.
Jiannan Luo +6 more
wiley +1 more source
Evans Functions, Jost Functions, and Fredholm Determinants [PDF]
Archive for Rational Mechanics and Analysis, 2007 53 ...
Gesztesy, Fritz +2 more
openaire +3 more sources
Bulk‐Surface Coupled PDE With an Open Boundary
Studies in Applied Mathematics, Volume 157, Issue 2, August 2026.ABSTRACT We study a bulk‐surface coupled Laplace system involving an embedded open boundary. The problem is reformulated as an integro‐differential equation using boundary integral representations, for which we establish existence and uniqueness of the solution.
Charles L. Epstein +2 more
wiley +1 more source
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2012 We consider a model operator H associated to a system of three particles interacting via nonlocal pair potentials on a three dimensional lattice. The existence conditions of the eigenvalues of a corresponding Friedrichs model are found and the structure ...
Tulkin Kh Rasulov
doaj
Bregman Wave Distribution Function Method
Radio Science, Volume 61, Issue 7, July 2026.Abstract This study proposes a wave distribution function (WDF) estimation method based on minimizing the Bregman divergence in the function space. The proposed method is entirely data‐driven and requires no hyperparameter tuning during the estimation process. It can be regarded as an extension of the maximum entropy method.
Ryosei Nakazawa +2 more
wiley +1 more source
The One Dimensional Focusing Nonlinear Schrödinger Equation and Their Regular Solutions
MathematicsWe consider the classical one-dimensional focusing nonlinear Schrödinger equation (NLS). We give a brief overview of the techniques used to solve it since its formulation. Then we present various results obtained by the author in recent years.
Pierre Gaillard
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Frontiers in Physics, 2019 In this note we consider a quantum mechanical particle moving inside an infinitesimally thin layer constrained by a parabolic well in the x-direction and, moreover, in the presence of an impurity modeled by an attractive Gaussian potential.
Sergio Albeverio +7 more
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On the Fredholm determinant of a piecewise linear transformation
Theoretical Computer Science, 1989 The author considers a piecewise linear map F of a bounded interval into itself and studies the Perron-Frobenius operator P of F restricted on the space of functions with bounded variation. He introduces a matrix \(\Phi\) (z) describing the spectrum of P and computes the zeta-function for F in terms of \(\Phi\) (z).
openaire +3 more sources
International Journal of Social Welfare, Volume 35, Issue 3, July 2026.Abstract Previous research has reported mental health disparities between truant and non‐truant adolescents. However, it remains unclear how social support is associated with mental health outcomes across different levels of truancy. We investigate whether social support has similar mental health benefits for all truant adolescents or whether it plays ...
Gökhan Kaya, Miia Bask
wiley +1 more source
Some spectral properties of a generalized Friedrichs model
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2011 We consider self-adjoint generalized Friedrichs model h(p), p ∈ T3 (T3 is the threedimensional torus), in the case where the parameter functions w1 and w2 of this operator has the special forms.
Tulkin Kh Rasulov, Khalim Kh Turdiev
doaj