Results 31 to 40 of about 8,453 (266)

A fractionally loaded boundary value problem two-dimensional in the spatial variable

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2023
In the paper, the boundary value problem for the loaded heat equation is solved, and the loaded term is represented as the Riemann-Liouville derivative with respect to the time variable. The domain of the unknown function is the cone.
M.T. Kosmakova   +2 more
doaj   +1 more source

Study of isotropy of mechanical properties of the TPMS-based cellular structures [PDF]

open access: yesE3S Web of Conferences, 2022
The study of isotropy of mechanical properties of cellular structures was carried out. The studied objects are based on triply periodic minimal surfaces (“Schwarz primitive”) with various cell size parameter t.
Balabanov Sergey   +4 more
doaj   +1 more source

Deduction of Electric Field Module in a Multilayer of Isotropic Materials to Detect Surface Plasmons with a Graphical User Interface

open access: yesJournal of Microwaves, Optoelectronics and Electromagnetic Applications, 2021
Electric field module for any isotropic multilayer thin film structure, is presented as analytical deduction. Analytic expressions for the electric field distribution are developed initially for a monolayer isotropic system based on Airy's formulae and ...
B. Garibello, Y. Martín
doaj   +1 more source

The Structure Modeling of Material Composed of the Orthotropic Crystals

open access: yesNonlinear Analysis, 2004
In this paper the model of a elastic composite medium which consists of a matrix containing a set of orthotropic crystals with the random orientation of the anisotropy axes is presented. The axes orientation is described by the Gauss distribution.
J. Dabulytė   +3 more
doaj   +1 more source

On the Power of Some Nonparametric Isotropy Tests

open access: yesActa Universitatis Lodziensis. Folia Oeconomica, 2020
In this paper, properties of nonparametric significance tests verifying the random field isotropy hypothesis are discussed. In particular, the subject of the conducted analysis is the probability of rejecting the null hypothesis when it is true.
Krzysztof Szymoniak-Książek
doaj   +1 more source

Wave Propagation in Periodic Metallic Structures with Equilateral Triangular Holes

open access: yesApplied Sciences, 2020
This paper studies wave propagation in a periodic parallel-plate waveguide with equilateral triangular holes. A mode-matching method is implemented to analyze the dispersion diagram of the structure possessing glide and mirror symmetries. Both structures
Antonio Alex-Amor   +6 more
doaj   +1 more source

Isotropy of Algebraic Theories

open access: yesElectronic Notes in Theoretical Computer Science, 2018
Abstract To every small category or topos one may associate its isotropy group, which is an algebraic invariant capturing information about the behaviour of automorphisms. We investigate this invariant in the particular situation of algebraic theories, thus obtaining a group-theoretic invariant of algebraic theories.
Pieter J. W. Hofstra   +2 more
openaire   +1 more source

Isotropy and Combination Problems

open access: yesCoRR, 2020
In a previous paper, the author and his collaborators studied the phenomenon of isotropy in the context of single-sorted equational theories, and showed that the isotropy group of the category of models of any such theory encodes a notion of inner automorphism for the theory.
openaire   +2 more sources

Isotropy and Crossed Toposes

open access: yesTheory and Applications of Categories, 2012
Summary: Motivated by constructions in the theory of inverse semigroups and étale groupoids, we define and investigate the concept of isotropy from a topos-theoretic perspective. Our main conceptual tool is a monad on the category of grouped toposes. Its algebras correspond to a generalized notion of crossed module, which we call a crossed topos. As an
Funk, Jonathon   +2 more
openaire   +2 more sources

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

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