Results 111 to 120 of about 25,191 (172)

The AGM of Gauss, Ramanujan's corresponding theory, and spectral bounds of self-adjoint operators. [PDF]

Mon Hefte Math
Faulhuber M, Gumber A, Shafkulovska I.
europepmc   +1 more source

Efficient Nyström-type method for the solution of highly oscillatory Volterra integral equations of the second kind. [PDF]

PLoS One, 2023
Wu Q, Sun M.
europepmc   +1 more source

Geomorphic Effectiveness of an Extreme Flood in a Mountain River: Evidence From Pre‐ and Post‐Event Surveys in a Subtropical Region of Southern Brazil

Hydrological Processes, Volume 40, Issue 5, May 2026.
The extreme flooding of April 2024 caused a complete “geomorphic reset”, resulting in a 24% widening of the channel and a transition to critical or supercritical flow regimes. The energy of the event broke through the stable armouring layer, reducing the armouring ratio from 7.9 to 4.9 and intensely removing fine sediments from the subsurface.
Gabriel Augusto Feyh, Jean Paolo Gomes Minella, Eno Darci Saatkamp, Lidiane Buligon, Gustavo Henrique Merten, Felipe Bernardi, Cristiano Carvalho da Silva, Angelo Garcia Costa, Alice Prates Bisso Dambroz   +8 more
wiley   +1 more source

A chaos-based augmented image encryption scheme for satellite images using Fredkin logic. [PDF]

Sci Rep
Alexan W, Maher EA, Mamdouh E, Youssef M, Ehab N.   +4 more
europepmc   +1 more source

On generating functions in additive number theory, II: lower-order terms and applications to PDEs. [PDF]

Math Ann, 2021
Brandes J, Parsell ST, Poulias C, Shakan G, Vaughan RC.   +4 more
europepmc   +1 more source

Variable Selection in Mixed‐Effects Location‐Scale and Location‐Shift Models

Statistics in Medicine, Volume 45, Issue 10-12, May 2026.
ABSTRACT When ordinal responses to questionnaires structured on the basis of Likert scales show differing variability or heterogeneity in subgroups of the population, appropriate regression approaches that are able to take this issue into account are the location‐scale and location‐shift model.
Moritz Berger, Maria Iannario
wiley   +1 more source

Positive curvature conditions on contractible manifolds. [PDF]

Math Ann
Sweeney P.
europepmc   +1 more source

Forward and Adjoint Calculations of Gravitational Potential in Heterogeneous, Aspherical Planets

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract We have developed a computational package for the calculation of numerically exact internal and external gravitational potential, its functional derivatives and sensitivity kernels, in an aspherical, heterogeneous planet. We detail our implementation, utilizing a transformation of the Poisson equation into a spherical reference domain, as well
Alex D. C. Myhill, Matthew A. Maitra, David Al‐Attar   +2 more
wiley   +1 more source

Exploring Enceladus's Interior Structure Using Electromagnetic Induction

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Electromagnetic (EM) sounding can constrain the electrical structure of Enceladus and, in turn, the salinity of its ocean and the porosity, fluid content, and thermal state of its hydrothermally active core. Here, we assess the feasibility of EM sounding at Enceladus using both global (orbiter) and local (lander) EM induction transfer ...
Alexander Grayver, Joachim Saur
wiley   +1 more source

Optimal Choice of the Regularization Parameter for Direct Identification of Polymers Relaxation Time and Frequency Spectra. [PDF]

Polymers (Basel)
Stankiewicz A, Bojanowska M.
europepmc   +1 more source