Results 21 to 30 of about 76,325 (307)

On anisotropic tensile mechanical behavior of Al–Cu–Li AA2198 alloy under different ageing conditions

open access: yesJournal of Materials Research and Technology, 2023
The anisotropic mechanical behavior of Al–Cu–Li (AA2198) alloy under different artificial ageing conditions as well as for different thicknesses of the material was examined in the present investigation.
Theano N. Examilioti   +6 more
doaj   +1 more source

Diagonal Scaling of Ill-Conditioned Matrixes by Genetic Algorithm [PDF]

open access: yesJournal of Applied Mathematics, Statistics and Informatics, 2012
Diagonal Scaling of Ill-Conditioned Matrixes by Genetic AlgorithmThe purpose of this article is to use genetic algorithm for finding two invertible diagonal matricesD1andD2such that the scaled matrixD1AD2approaches to minimum condition number.
Vajargah, Behrouz Fathi, Moradi, Mojtaba
openaire   +1 more source

In situ evidence of breaking the ion frozen-in condition via the non-gyrotropic pressure effect in magnetic reconnection [PDF]

open access: yesAnnales Geophysicae, 2015
For magnetic reconnection to proceed, the frozen-in condition for both ion fluid and electron fluid in a localized diffusion region must be violated by inertial effects, thermal pressure effects, or inter-species collisions.
L. Dai   +4 more
doaj   +1 more source

Bulk matter and the boundary quantum null energy condition

open access: yesJournal of High Energy Physics, 2018
We investigate the quantum null energy condition (QNEC) in holographic CFTs, focusing on half-spaces and particular classes of states. We present direct, and in certain cases nonperturbative, calculations for both the diagonal and off-diagonal ...
Zuhair U. Khandker   +2 more
doaj   +1 more source

Study on Sloshing Characteristics in a Liquid Cargo Tank under Combination Excitation

open access: yesJournal of Marine Science and Engineering, 2022
Sloshing is a common flow phenomenon in liquid cargo tanks and has a great negative impact on the stability and safety of ship navigation. It is important to understand the sloshing process of tanks under the excitation of complex external conditions for
Qiong Zhang, Bo Shui, Hanhua Zhu
doaj   +1 more source

Regularity of fuzzy convergence spaces

open access: yesOpen Mathematics, 2018
(Fuzzy) convergence spaces are extensions of (fuzzy) topological spaces. ⊤-convergence spaces are one of important fuzzy convergence spaces. In this paper, we present an extending dual Fischer diagonal condition, and making use of this we discuss a ...
Li Lingqiang, Jin Qiu, Yao Bingxue
doaj   +1 more source

Gorenstein tiled orders

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2014
The aim of this article is to describe exponent matrices of Gorenstein tiled orders. The necessary and sufficient condition for possibility such to construct a Gorenstein tiled order which has given orders over some discrete valuation ring (the unique ...
V. Kiricenko   +4 more
doaj   +1 more source

Bounded real lemmas for positive descriptor systems [PDF]

open access: yes, 2015
A well known result in the theory of linear positive systems is the existence of positive definite diagonal matrix (PDDM) solutions to some well known linear matrix inequalities (LMIs).
Yan, Xinggang   +3 more
core   +1 more source

Convergence spaces and diagonal conditions

open access: yesTopology and its Applications, 1996
The authors study and compare several diagonal axioms which can be imposed on convergence spaces. These conditions were first introduced by \textit{H.-J. Kowalsky} [Math. Nachr. 12, 301-340 (1954; Zbl 0056.41403)] and by \textit{C. H. Cook} and \textit{H. R. Fischer} [Math. Ann. 174, 1-7 (1967; Zbl 0152.39603)].
Kent, D. C., Richardson, G. D.
openaire   +3 more sources

Common diagonal solutions to the Lyapunov inequalities for interval systems

open access: yesJournal of Inequalities and Applications, 2016
In this paper for interval systems we consider the problem of existence and evaluation of common diagonal solutions to the Lyapunov inequalities. For second order systems, we give necessary and sufficient conditions and exact solutions, that is, complete
Bengi Yıldız   +2 more
doaj   +1 more source

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