Results 81 to 90 of about 39,096 (194)

A General System of Euler–Lagrange-Type Quadratic Functional Equations in Menger Probabilistic Non-Archimedean 2-Normed Spaces

open access: yesAbstract and Applied Analysis, 2011
We prove the generalized Hyers-Ulam-Rassias stability of a general system of Euler-Lagrange-type quadratic functional equations in non-Archimedean 2-normed spaces and Menger probabilistic non-Archimedean-normed spaces.
M. Eshaghi Gordji   +3 more
doaj   +1 more source

Pole‐To‐Pole 3D Radial Trajectory Designs Improve Image Quality and Quantitative Parametric Mapping in the Brain and Heart

open access: yesMagnetic Resonance in Medicine, Volume 95, Issue 5, Page 2627-2643, May 2026.
ABSTRACT Purpose To design 3D radial spiral phyllotaxis trajectories aimed at removing phase inconsistencies, improving image quality, and enhancing parametric mapping accuracy by acquiring nearly opposing spokes starting from both hemispheres in 3D radial k‐space. Methods Two 3D radial trajectories, pole‐to‐pole and continuous spiral phyllotaxis, were
Eva S. Peper   +12 more
wiley   +1 more source

Interaction of an Archimedean spiral structure with orbital angular momentum light

open access: yesNew Journal of Physics, 2018
Complementing the research of surface plasmon polariton vortices for Archimedean spiral structures grooved in gold platelets, we here study the analogous positive structure of an Archimedean spiral consisting of bent gold nanorods. We consider spirals of
R M Kerber   +6 more
doaj   +1 more source

A remark on stationary fuzzy metric spaces

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2013
The main result states that the category of stationary fuzzy metric spaces (with respect to an archimedean $t$-norm) and nonexpanding maps is isomorphic to a full subcategory of the category of metric spaces and nonexpanding maps.
A. Savchenko
doaj   +1 more source

Risk Times in Mission‐Oriented Systems

open access: yesQuality and Reliability Engineering International, Volume 42, Issue 3, Page 1380-1398, April 2026.
ABSTRACT This article assesses risk times in mission‐oriented systems with high safety standards. We examine critical times under two safety policies. The first requires that the system's reliability function, known the first failure of the components, must exceed a reliability level throughout the mission.
Antonio Arriaza   +2 more
wiley   +1 more source

Stochastic antiderivational equations on non-Archimedean Banach spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2003
Stochastic antiderivational equations on Banach spaces over local non-Archimedean fields are investigated. Theorems about existence and uniqueness of the solutions are proved under definite conditions.
S. V. Ludkovsky
doaj   +1 more source

Scaling of Latitude‐Dependent Heat Transport in Geostrophic Convection

open access: yesGeophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract Latitudinal variations in heat transport shape the thermal and magnetic evolution of rapidly rotating planets, stars, and icy moons. Although global simulations have revealed strong equatorial–polar contrasts, a predictive scaling theory has been lacking.
Veeraraghavan Kannan   +2 more
wiley   +1 more source

ON GENERATING MULTIVARIATE SAMPLES WITH ARCHIMEDEAN COPULAS [PDF]

open access: yes, 2014
Archimedean copulas are one of the most known classes of copulas. They allow modeling the dependencies between variables with small number of parameters.
Stelmach, Jacek
core   +1 more source

Majority-vote model on (3,4,6,4) and (3^4,6) Archimedean lattices

open access: yes, 2006
On Archimedean lattices, the Ising model exhibits spontaneous ordering. Two examples of these lattices of the majority-vote model with noise are considered and studied through extensive Monte Carlo simulations.
Albert R.   +3 more
core   +1 more source

Patterning the Void: Combining L‐Systems with Archimedean Tessellations as a Perspective for Tissue Engineering Scaffolds

open access: yesAdvanced Functional Materials, Volume 36, Issue 23, 19 March 2026.
This study introduces a novel multi‐scale scaffold design using L‐fractals arranged in Archimedean tessellations for tissue regeneration. Despite similar porosity, tiles display vastly different tensile responses (1–100 MPa) and deformation modes. In vitro experiments with hMSCs show geometry‐dependent growth and activity. Over 55 000 tile combinations
Maria Kalogeropoulou   +4 more
wiley   +1 more source

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