Results 81 to 90 of about 24,150 (220)

Mantle Structure Beneath the Greater Alpine Region From Teleseismic Full P‐Waveform Inversion

open access: yesJournal of Geophysical Research: Solid Earth, Volume 130, Issue 11, November 2025.
Abstract AlpArray data were employed to infer a new mantle model of the Alps from teleseismic full P‐waveform inversion. It features hybrid numerical forward modeling in the time domain, compression of wavefields by Fourier transform at selected frequencies, the use of frequency domain waveform sensitivity kernels and a multi‐scale approach by ...
W. Friederich   +5 more
wiley   +1 more source

Existence and Multiplicity Results of Homoclinic Solutions for the DNLS Equations with Unbounded Potentials

open access: yesAbstract and Applied Analysis, 2012
A class of difference equations which include discrete nonlinear Schrödinger equations as special cases are considered. New sufficient conditions of the existence and multiplicity results of homoclinic solutions for the difference equations are obtained ...
Defang Ma, Zhan Zhou
doaj   +1 more source

Deformation Lemma, Ljusternik-Schnirellmann Theory and Mountain Pass Theorem on C1-Finsler Manifolds [PDF]

open access: yes, 1995
∗Partially supported by Grant MM409/94 Of the Ministy of Science and Education, Bulgaria. ∗∗Partially supported by Grant MM442/94 of the Ministy of Science and Education, Bulgaria.Let M be a complete C1−Finsler manifold without boundary and f : M → R be ...
Krastanov, Mikhail   +2 more
core  

Denoising Autoencoder for Reconstructing Sensor Observation Data and Predicting Evapotranspiration: Noisy and Missing Values Repair and Uncertainty Quantification

open access: yesWater Resources Research, Volume 61, Issue 10, October 2025.
Abstract Machine learning (ML) methods applied in scientific research often deal with interrelated features in high‐dimensional data. Reducing data noise and redundancy is needed to increase prediction accuracy and efficiency especially when dealing with data from field sensors.
Timothy K. Johnsen   +6 more
wiley   +1 more source

Uncovering Price Patterns in the Raw Milk Markets of Central and Southeast European Countries: Implications for Farm Economic Resilience

open access: yesAustralian Journal of Agricultural and Resource Economics, Volume 69, Issue 4, Page 947-959, October 2025.
ABSTRACT We employ state‐space models to analyse the trend, seasonal component and cycle of farmgate milk prices in Balkan countries, namely Greece, Bulgaria and Slovenia, and in Hungary. We split the time span in 2016 to assess whether the dairy policies undertaken until the abolition of the milk quota system have affected the price cycles.
Andreas Rokopanos   +2 more
wiley   +1 more source

Three nontrivial solutions for nonlinear fractional Laplacian equations

open access: yesAdvances in Nonlinear Analysis, 2018
We study a Dirichlet-type boundary value problem for a pseudodifferential equation driven by the fractional Laplacian, proving the existence of three non-zero solutions.
Düzgün Fatma Gamze   +1 more
doaj   +1 more source

Environmental infringement and sag estimation for power transmission lines with unmanned aerial vehicles and multi‐modal sensors

open access: yesComputer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 25, Page 4342-4363, 20 October 2025.
Abstract This paper proposes an advanced unmanned aerial vehicle‐based framework that integrates three‐dimensional LiDAR and infrared camera measurements for environmental infringement assessment. The proposed framework features three characteristics. First, multi‐sensor measurements are fused for environmental infringement.
Siheon Jeong   +3 more
wiley   +1 more source

Existence of nontrivial solutions for a class of elliptic systems

open access: yesElectronic Journal of Differential Equations, 2013
Using a version of the generalized mountain pass theorem, we obtain the existence of nontrivial solutions for a class of superquadratic elliptic systems.
Chun Li, Zeng-Qi Ou, Chun-Lei Tang
doaj  

Existence of Multiple Solutions for a Class of Biharmonic Equations

open access: yesDiscrete Dynamics in Nature and Society, 2013
By a symmetric Mountain Pass Theorem, a class of biharmonic equations with Navier type boundary value at the resonant and nonresonant case are discussed, and infinitely many solutions of the equations are obtained.
Chunhan Liu, Jianguo Wang
doaj   +1 more source

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