Results 11 to 20 of about 1,726,062 (336)
The behavior of partially coherent twisted space-time beams in atmospheric turbulence
Frontiers in Physics, 2023 We study how atmospheric turbulence affects twisted space-time beams, which are non-stationary random optical fields whose space and time dimensions are coupled with a stochastic twist.
Milo W. Hyde IV
doaj +1 more source
Probability Theory and Related Fields, 2023 We study how the typical gradient and typical height of a random surface are modified by the addition of quenched disorder in the form of a random independent external field. The results provide quantitative estimates, sharp up to multiplicative constants, in the following cases.
Paul Dario, Matan Harel, Ron Peled
openaire +3 more sources
Kernel Distance Measures for Time Series, Random Fields and Other Structured Data
Frontiers in Applied Mathematics and Statistics, 2021 This paper introduces kdiff, a novel kernel-based measure for estimating distances between instances of time series, random fields and other forms of structured data.
Srinjoy Das +2 more
doaj +1 more source
On Structured Random Matrices Defined by Matrix Substitutions
Mathematics, 2023 The structure of the random matrices introduced in this work is given by deterministic matrices—the skeletons of the random matrices—built with an algorithm of matrix substitutions with entries in a finite field of integers modulo some prime number, akin
Manuel L. Esquível, Nadezhda P. Krasii
doaj +1 more source
Architecture, Civil Engineering, Environment, 2023 The paper presents a proprietary procedure for the analysis of normal stress distributions in post-tensioned cross-sections. It has a significant advantage over conventional commonly used approaches based solely on the envelope analysis as it provides ...
Owerko Piotr
doaj +1 more source
Applied Sciences, 2022 For the numerical simulation of components made of short fiber-reinforced composites, the correct prediction of the deformation including the elastic and plastic behavior and its spatial distribution is essential. When using purely deterministic modeling
Natalie Rauter
doaj +1 more source
Frontiers in Marine Science, 2023 Reservoir bank slopes with weak interlayers are common in the Three Gorges Reservoir area. Their stabilities are affected by multi-coupled factors (e.g., reservoir water fluctuations, rainfall, and earthquakes in the reservoir area).
Wengang Zhang +9 more
doaj +1 more source
Компьютерная оптика, 2022 The relevance of the tasks of detecting and recognizing objects in images and their sequences has only increased over the years. Over the past few decades, a huge number of approaches and methods for detecting both anomalies, that is, image areas whose ...
N.A. Andriyanov +2 more
doaj +1 more source
Dimensionality of random light fields
Journal of the European Optical Society-Rapid Publications, 2017 Background The spectral polarization state and dimensionality of random light are important concepts in modern optical physics and photonics. Methods By use of space-frequency domain coherence theory, we establish a rigorous classification for the ...
Andreas Norrman +3 more
doaj +1 more source
Stochastic finite elements: Where is the physics? [PDF]
Theoretical and Applied Mechanics, 2011 The micromechanics based on the Hill-Mandel condition indicates that the majority of stochastic finite element methods hinge on random field (RF) models of material properties (such as Hooke’s law) having no physical content, or even at odds with ...
Ostoja-Starzewski Martin
doaj +1 more source