Results 211 to 220 of about 296,009 (261)

Nonstationary Spatial Correlation of Earthquake Ground Motions in California

Earthquake Spectra, Volume 42, Issue 3, August 2026.
Assessing seismic risk to spatially distributed infrastructure systems requires realistic representations of spatially correlated ground motions. Existing models for the spatial correlations of ground motions rely on strong second‐order stationarity assumptions, under which the correlation structure is assumed to be invariant across space, potentially ...
Pengfei Wang, Busra Bocekli, Junhui Yang, Scott J. Brandenberg, Jonathan P. Stewart   +4 more
wiley   +1 more source

Weak, Strong and Mixed Extensions of Relations to Spaces of Ultrafilters

Mathematical Logic Quarterly, Volume 72, Issue 3, August 2026.
ABSTRACT The use of nonstandard methods to characterize properties of weak, strong and mixed extensions of congruences to ultrafilters has been the main topic of several recent papers, focused mostly on congruences and divisions. We show that similar methods can be used to extend these characterizations to arbitrary relations and their interplay.
Leonardo Raffaello Maximilian Gasparro, Lorenzo Luperi Baglini   +1 more
wiley   +1 more source

Stability of a Fully Discrete Local Discontinuous Galerkin Method for the Generalized Benjamin–Ono Equation

Numerical Methods for Partial Differential Equations, Volume 42, Issue 4, July 2026.
ABSTRACT The main purpose of this paper is to design a fully discrete local discontinuous Galerkin (LDG) scheme for the generalized Benjamin–Ono equation. First, we prove the L2$$ {L}^2 $$‐stability for the proposed semi‐discrete LDG scheme and obtained a suboptimal order of convergence for power nonlinear flux.
Mukul Dwivedi, Tanmay Sarkar
wiley   +1 more source

Sections and projections of the outer and inner regularizations of a convex body

Mathematika, Volume 72, Issue 3, July 2026.
Abstract We establish new geometric inequalities comparing the volumes of sections and projections of a convex body, whose barycenter or Santaló point is at the origin, with those of its inner and outer regularizations. We also provide functional extensions of these inequalities to the setting of log‐concave functions. Our approach relies on the recent
Natalia Tziotziou
wiley   +1 more source

Absolutely closed semigroups. [PDF]

Rev R Acad Cienc Exactas Fis Nat A Mat
Banakh T, Bardyla S.
europepmc   +1 more source

Low Reynolds Number Flow in a Packed Bed of Rotated Bars

Chemical Engineering &Technology, Volume 49, Issue 6, June 2026.
Research Article: This study examines gas flow in a modular packed‐bed reactor with square bars arranged in rotated layers, creating complex void spaces. Using particle image velocimetry, measurements were taken at Reynolds numbers of 100 and 200. These results validated two particle‐resolved numerical simulations employing boundary‐conforming meshing ...
Wojciech Sadowski, Christin Velten, Maximilian Brömmer, Hakan Demir, Kerstin Hülz, Francesca di Mare, Katharina Zähringer, Viktor Scherer   +7 more
wiley   +1 more source

Advanced control of non‐isothermal axial dispersion tubular reactors with recycle‐induced state delay

The Canadian Journal of Chemical Engineering, Volume 104, Issue 6, Page 3018-3037, June 2026.
Abstract We develop a delay‐aware estimation and control framework for a non‐isothermal axial dispersion tubular reactor modelled as a coupled parabolic‐hyperbolic PDE system with recycle‐induced state delay. The infinite‐dimensional dynamics are preserved without spatial discretization by representing the delay as a transport PDE and adopting a late ...
Behrad Moadeli, Stevan Dubljevic
wiley   +1 more source

Computational workflows for natural and biomedical image processing based on hypercomplex algebras. [PDF]

Patterns (N Y)
Valous NA, Hitzer E, Duşe D, Moraleda RR, Popp F, Suarez-Carmona M, Berthel A, Papageorgiou I, Fremd C, Rölle A, Westhoff CC, Lenoir B, Halama N, Zörnig I, Jäger D.   +14 more
europepmc   +1 more source

A novel study on the structure of left almost hypermodules. [PDF]

Heliyon
Abughazalah N, Kanwal SS, Mehdi M, Yaqoob N.   +3 more
europepmc   +1 more source

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Cryptanalysis of an MOR cryptosystem based on a finite associative algebra

Science China Information Sciences, 2016
The Shor algorithm is effective for public-key cryptosystems based on an abelian group. At CRYPTO 2001, Paeng (2001) presented a MOR cryptosystem using a non-abelian group, which can be considered as a candidate scheme for post-quantum attack. This paper analyses the security of a MOR cryptosystem based on a finite associative algebra using a quantum ...
Wanqing Wu, Huanguo Zhang, Houzhen Wang, Shaowu Mao, Shuomei Wu, Haiqing Han   +5 more
semanticscholar   +2 more sources