Results 11 to 20 of about 9,926,750 (356)

β-Variational autoencoders and transformers for reduced-order modelling of fluid flows [PDF]

open access: yesNature Communications, 2023
Variational autoencoder architectures have the potential to develop reduced-order models for chaotic fluid flows. We propose a method for learning compact and near-orthogonal reduced-order models using a combination of a β-variational autoencoder and a ...
A. Solera-Rico   +6 more
semanticscholar   +1 more source

Pengaruh Metode Periodic Order Quantity (POQ) terhadap Tingkat Efisiensi Pengadaan Material Proyek di PT. Antero Makmur

open access: yes, 2020
Material costs. Some of the causes are the inaccurate estimation of the amount of material and erroneous delivery time plans. Both lead to a shortage or excess of material orders, and inefficient time of ordering.
Nita Sulistyowati   +2 more
semanticscholar   +1 more source

Generating a second-order topological insulator with multiple corner states by periodic driving [PDF]

open access: yesPhysical review B, 2019
We study the effects of periodic driving on a variant of the Bernevig-Hughes-Zhang (BHZ) model defined on a square lattice. In the absence of driving, the model has both topological and nontopological phases depending on the different parameter values ...
R. Seshadri, Anirban Dutta, D. Sen
semanticscholar   +1 more source

Periodic Ordered Permutation Groups and Cyclic Orderings

open access: yesJournal of Combinatorial Theory, Series B, 1995
It is shown that periodic ordered permutation groups satisfying certain extra conditions are very nearly simple. This is applied to several natural examples, such as the following. (i) If \(z\) denotes the map \(x \mapsto x + 1\) on \(\mathbb{R}\), and \(\text{Diff}(\mathbb{R})\) is the group of diffeomorphisms of \(\mathbb{R}\), then \(C_{\text{Diff}(\
Droste, M., Giraudet, M., Macpherson, D.
openaire   +1 more source

Periodic solutions of higher order systems [PDF]

open access: yesPacific Journal of Mathematics, 1979
where u, g, and / are Λ-vectors. We will establish the existence of T-periodic solutions to (1.1) for large classes of nonlinearities g and forcing terms /. In particular we include cases where g is bounded, sublinear, or superlinear in u9 with arbitrary growth in the other arguments of g in the latter case.
Bates, P. W., Ward, J. R.
openaire   +3 more sources

Triply periodic minimal surface (TPMS) porous structures: from multi-scale design, precise additive manufacturing to multidisciplinary applications

open access: yesInternational Journal of Extreme Manufacturing, 2022
Inspired by natural porous architectures, numerous attempts have been made to generate porous structures. Owing to the smooth surfaces, highly interconnected porous architectures, and mathematical controllable geometry features, triply periodic minimal ...
Jiawei Feng   +3 more
semanticscholar   +1 more source

Weighted Fractional-Order Transform Based on Periodic Matrix

open access: yesMathematics, 2021
Tao et al. proposed the definition of the linear summation of fractional-order matrices based on the theory of Yeh and Pei. This definition was further extended and applied to image encryption. In this paper, we propose a reformulation of the definitions
Tieyu Zhao, Yingying Chi
doaj   +1 more source

High order periodic impulsive problems

open access: yesDynamical Systems and Differential Equations, AIMS Proceedings 2015 Proceedings of the 10th AIMS International Conference (Madrid, Spain), 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Minhós, Feliz, Fialho, J
openaire   +2 more sources

THE FOURTH ORDER MIXED PERIODIC RECURRENCE FRACTIONS

open access: yesJournal of Vasyl Stefanyk Precarpathian National University, 2015
Offered economical algorithm for calculation of rational shortenings of thefourth-order mixed periodic recurrence fraction.
A.V. Semenchuk, R.A. Zatorsky
doaj   +1 more source

Periodic solutions of nonlinear second-order difference equations

open access: yesAdvances in Difference Equations, 2005
We establish conditions for the existence of periodic solutions of nonlinear, second-order difference equations of the form y(t+2)+by(t+1)+cy(t)=f(y(t)), where c≠0 and f:ℝ→ℝ is continuous.
Debra Lynn Etheridge   +1 more
doaj   +2 more sources

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