Results 31 to 40 of about 1,909 (109)

Drag-free and attitude control for the GOCE satellite [PDF]

, 2008
The paper concerns Drag-Free and Attitude Control of the European satellite Gravity field and steady-state Ocean Circulation Explorer (GOCE) during the science phase.
Aguirre-Martinez, Bertotti, Canuto, Canuto, Canuto, Donati, Enrico Canuto, Fichter, Luenberger, Picone, Scheeres, Silvestrin, Touboul, Vaillon   +13 more
core   +1 more source

Instability of Vertical Constant Through Flows in Binary Mixtures in Porous Media with Large Pores

Mathematical Problems in Engineering, Volume 2019, Issue 1, 2019., 2019
A binary mixture saturating a horizontal porous layer, with large pores and uniformly heated from below, is considered. The instability of a vertical fluid motion (throughflow) when the layer is salted by one salt (either from above or from below) is analyzed.
Florinda Capone, Roberta De Luca, Isabella Torcicollo, Filippo de Monte   +3 more
wiley   +1 more source

Identification of Fully Measurable Grand Lebesgue Spaces

Journal of Function Spaces, Volume 2017, Issue 1, 2017., 2017
We consider the Banach function spaces, called fully measurable grand Lebesgue spaces, associated with the function norm ρ(f) = ess supx∈X⁡δ(x)ρp(x)(f), where ρp(x) denotes the norm of the Lebesgue space of exponent p(x), and p(·) and δ(·) are measurable functions over a measure space (X, ν), p(x)∈[1, ∞], and δ(x)∈(0,1] almost everywhere. We prove that
Giuseppina Anatriello, Ralph Chill, Alberto Fiorenza, Maria Alessandra Ragusa   +3 more
wiley   +1 more source

Bifurcation and Nodal Solutions for the Half‐Linear Problems with Nonasymptotic Nonlinearity at 0 and ∞

Discrete Dynamics in Nature and Society, Volume 2016, Issue 1, 2016., 2016
We study the existence of nodal solutions for the following problem: −x″ = αx+ + βx− + ra(t)f(x), 0 < t < 1, x(0) = x(1) = 0, where r ≠ 0 is a parameter, a(t) ∈ C([0,1], (0, ∞)) with a(t)≢0 on any subinterval of [0,1], x+ = max{x, 0}, x− = −min{x, 0}, and α, β ∈ C[0,1]; f∈C(R,R), sf(s) > 0 for s ≠ 0, and f0, f∞ ∉ (0, ∞), where f0 = lim|s|→0f(s)/s and f∞
Wenguo Shen, Gabriele Bonanno
wiley   +1 more source

Local scale-invariance in ageing phenomena

, 1999
Many materials quenched into their ordered phase undergo ageing and there show dynamical scaling. For any given dynamical exponent z, this can be extended to a new form of local scale-invariance which acts as a dynamical symmetry.
Apalkov, Vladimir M., Bichler, Max, Broocks, Kay-Birger, Chakraborty, Tapash, Heitmann, Detlef, Heyn, Christian, Schröter, Patrick, Schüller, Christian, Wegscheider, Werner   +8 more
core   +2 more sources

Comparing First‐Order Microscopic and Macroscopic Crowd Models for an Increasing Number of Massive Agents

Advances in Mathematical Physics, Volume 2016, Issue 1, 2016., 2016
A comparison between first‐order microscopic and macroscopic differential models of crowd dynamics is established for an increasing number N of pedestrians. The novelty is the fact of considering massive agents, namely, particles whose individual mass does not become infinitesimal when N grows.
Alessandro Corbetta, Andrea Tosin, Prabir Daripa   +2 more
wiley   +1 more source

Attainability of the fractional Hardy constant with nonlocal mixed boundary conditions. Applications

, 2017
The first goal of this paper is to study necessary and sufficient conditions to obtain the attainability of the \textit{fractional Hardy inequality } $$\Lambda_{N}\equiv\Lambda_{N}(\Omega):=\inf_{\{\phi\in \mathbb{E}^s(\Omega, D), \phi\neq 0\}} \dfrac ...
Abdellaoui, Boumediene, Attar, Ahmed, Dieb, Abdelrazek, Peral, Ireneo   +3 more
core   +1 more source

Bifurcation for indefinite‐weighted p$p$‐Laplacian problems with slightly subcritical nonlinearity

Mathematische Nachrichten, Volume 297, Issue 11, Page 3982-4002, November 2024.
Abstract We study a superlinear elliptic boundary value problem involving the p$p$‐Laplacian operator, with changing sign weights. The problem has positive solutions bifurcating from the trivial solution set at the two principal eigenvalues of the corresponding linear weighted boundary value problem.
Mabel Cuesta, Rosa Pardo
wiley   +1 more source

A Local Estimate for the Maximal Function in Lebesgue Spaces with EXP‐Type Exponents

Journal of Function Spaces, Volume 2015, Issue 1, 2015., 2015
It is proven that if 1 ≤ p(·) < ∞ in a bounded domain Ω⊂Rn and if p(·) ∈ EXPa(Ω) for some a > 0, then given f ∈ Lp(·)(Ω), the Hardy‐Littlewood maximal function of f, Mf, is such that p(·)log(Mf) ∈ EXPa/(a+1)(Ω). Because a/(a + 1) < 1, the thesis is slightly weaker than (Mf) λp(·) ∈ L1(Ω) for some λ > 0. The assumption that p(·) ∈ EXPa(Ω) for some a > 0
Alberto Fiorenza, Henryk Hudzik
wiley   +1 more source

Infinite first order differential systems with nonlocal initial conditions [PDF]

, 2014
We discuss the solvability of an infinite system of first order ordinary differential equations on the half line, subject to nonlocal initial conditions.
Infante, Gennaro, Jebelean, Petru, Madjidi, Fadila   +2 more
core   +2 more sources