Results 41 to 50 of about 32,538 (166)

Influence of Thermoelastic Phenomena on the Energy Conservation in Non-Contacting Face Seals

open access: yesEnergies, 2020
The purpose of this study was to develop a mathematical model for non-contacting face seals to analyze how their performance is affected by thermoelastic phenomena. The model was used to solve thermal conductivity and thermoelasticity problems.
Slawomir Blasiak
doaj   +1 more source

Moduli space of filtered λ-ringstructures over a filtered ring

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2004
Motivated in part by recent works on the genus of classifying spaces of compact Lie groups, here we study the set of filtered λ-ring structures over a filtered ring from a purely algebraic point of view. From a global perspective, we first show that this
Donald Yau
doaj   +1 more source

The buckling strength of a steel containment vessel with discontinuous stiffening rings of a nuclear power plant

open access: yesNihon Kikai Gakkai ronbunshu, 2020
A steel containment vessel of PWR (Pressurized Water Reactor) has a circular cylindrical body and a hemispherical head. Since the containment vessel is a thin-walled shell structure, shear and bending buckling might occur in the cylindrical part under ...
Kazuhiro MIURA   +6 more
doaj   +1 more source

Double and Square Bessel–Gaussian Beams

open access: yesMicromachines, 2023
We obtain a transform that relates the standard Bessel–Gaussian (BG) beams with BG beams described by the Bessel function of a half-integer order and quadratic radial dependence in the argument.
Eugeny G. Abramochkin   +2 more
doaj   +1 more source

Multiplicative Structure and Hecke Rings of Generator Matrices for Codes over Quotient Rings of Euclidean Domains

open access: yesMathematics, 2017
In this study, we consider codes over Euclidean domains modulo their ideals. In the first half of the study, we deal with arbitrary Euclidean domains.
Hajime Matsui
doaj   +1 more source

Noetherian rings of composite generalized power series

open access: yesOpen Mathematics
Let A⊆BA\subseteq B be an extension of commutative rings with identity, (S,≤)\left(S,\le ) a nonzero strictly ordered monoid, and S*=S\{0}{S}^{* }\left=S\backslash \left\{0\right\}.
Oh Dong Yeol
doaj   +1 more source

On λ-rings and topological realization

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
It is shown that most possibly truncated power series rings admit uncountably many filtered λ-ring structures. The question of how many of these filtered λ-ring structures are topologically realizable by the K-theory of torsion-free spaces is also ...
Donald Yau
doaj   +1 more source

Right Gaussian rings and skew power series rings

open access: yesJournal of Algebra, 2011
The authors extend the notion of a Gaussian ring to a noncommutative setting by introducing right Gaussian rings. For a ring \(R\) and a polynomial \(f\in R[x]\), let \(c_r(f)\) be the right ideal of \(R\) generated by the coefficients of \(f\). If \(c_r(fg)=c_r(f)c_r(g)\) for any \(f,g\in R[x]\), the ring \(R\) is called `right Gaussian'.
Mazurek, Ryszard, Ziembowski, Michał
openaire   +2 more sources

Localizations and completions of skew power series rings

open access: yesAmerican Journal of Mathematics, 2010
This paper is a natural continuation of the study of skew power series rings $A=R[[t;\sigma,\delta]]$ initiated in an earlier work. We construct skew Laurent series rings $B$ and show the existence of some canonical Ore sets $S$ for the skew power series rings $A$ such that a certain completion of the localization $A_S$ is isomorphic to $B.$ This
P. Schneider, O. Venjakob
openaire   +2 more sources

ALMOST right (left) SEMICLEAN RINGS of SKEW GENERALIZED POWER SERIES

open access: yesJournal of Scientific Research in Science
We extend the notions of almost clean, n-almost clean, and almost semiclean to the non-commutative setting. Then, we demonstrate that under specific conditions that the skew generalized power series rings S[[T,w]] is almost right (left) semiclean if ...
Dina Abdelhakim   +2 more
doaj   +1 more source

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