Results 1 to 10 of about 1,540,986 (287)

Road foundation thawing at change in Ice content along the active layer depth [PDF]

E3S Web of Conferences, 2023
The seasonal temperature and humidity regime of the road foundation in the active layer of soil largely determines the reliability and safety of the automobile road use.
Galkin A.F., Zheleznyak M.N., Plotnikov N.A., Pankov V.Y.   +3 more
doaj   +1 more source

Asymptotic analysis of optimal control problems on the semiaxes for Carathéodory differential inclusions with fast oscillating coefficients

Nonlinear Analysis, 2023
We consider an optimal control problem for a differential inclusion of the Carathéodory type affine with respect to the control with a coercive cost functional on a semiaxis and with fast oscillating time-dependent coefficients.
Sergey Dashkovskiy, Oleksiy Kapustyan, Olena Kapustian, Tetyana Zhuk   +3 more
doaj   +1 more source

Substantiation of asymptotical solution of weakly nonlinear hyperbolic system

Lietuvos Matematikos Rinkinys, 2023
A hyperbolic system of first order partial differential equations with small parameter and periodical initial conditions is obtained. The uniformly valid in a long time interval asymptotical solution can be constructed using the averaging along ...
Aleksandras Krylovas
doaj   +1 more source

On the Tortuosity-Connectivity of Cement-Based Porous Materials

Applied Sciences, 2021
In this work, the transport equations of ionic species in concrete are studied. First, the equations at the porescale are considered, which are then averaged over a representative elementary volume.
Michiel Fenaux, Encarnacion Reyes, Jaime C. Gálvez, Amparo Moragues, Jesús Bernal   +4 more
doaj   +1 more source

A Novel Averaging Principle Provides Insights in the Impact of Intratumoral Heterogeneity on Tumor Progression

Mathematics, 2021
Typically stochastic differential equations (SDEs) involve an additive or multiplicative noise term. Here, we are interested in stochastic differential equations for which the white noise is nonlinearly integrated into the corresponding evolution term ...
Haralampos Hatzikirou, Nikos I. Kavallaris, Marta Leocata   +2 more
doaj   +1 more source

Sufficient conditions for the improved regular growth of entire functions in terms of their averaging

Karpatsʹkì Matematičnì Publìkacìï, 2020
Let $f$ be an entire function of order $\rho\in (0,+\infty)$ with zeros on a finite system of rays $\{z: \arg z=\psi_{j}\}$, $j\in\{1,\ldots,m\}$, $0\le ...
R.V. Khats'
doaj   +1 more source

First steps towards the averaging with respect to a part of the coordinates [PDF]

Theoretical and Applied Mechanics
The problem of averaging on an infinite time interval is considered. The classical results on averaging proved by N.N. Bogoluybov are generalized to the case in which only a part of the coordinates in the phase space remains close to the ...
Polekhin Ivan
doaj   +1 more source

Cosmology Without Averaging [PDF]

, 2010
We construct cosmological models consisting of large numbers of identical, regularly spaced masses. These models do not rely on any averaging procedures, or on the existence of a global Friedmann-Robertson-Walker (FRW) background.
Biswas T, Biswas T, Bolejko K, Bondi H, Brouzakis N, Brouzakis N, Buchert T, Buchert T, Clarkson C, Clifton T, Coxeter H S M, Ellis G F R, Ellis G F R, Etherington I M H, Lemaâitre G, Marra V, McVittie G C, Räsänen S, Sylos-Labini F, Timothy Clifton, Uzan J-P Ellis G F R Larena J, Weinberg S, Wiltshire D, Zalaletdinov R M, Zibin J   +24 more
core   +3 more sources

Revisiting the learning curve (once again)

Frontiers in Psychology, 2013
The vast majority of published work in the field of associative learning seeks to test the adequacy of various theoretical accounts of the learning process using average data.
Steven eGlautier
doaj   +1 more source

Discrete-Time Semi-Markov Random Evolutions in Asymptotic Reduced Random Media with Applications

Mathematics, 2020
This paper deals with discrete-time semi-Markov random evolutions (DTSMRE) in reduced random media. The reduction can be done for ergodic and non ergodic media.
Nikolaos Limnios, Anatoliy Swishchuk
doaj   +1 more source