Results 71 to 80 of about 241,396 (287)
Forbidden Configurations: Finding the number predicted by the Anstee-Sali Conjecture is NP-hard [PDF]
, 2013 Let F be a hypergraph and let forb(m,F) denote the maximum number of edges a hypergraph with m vertices can have if it doesn't contain F as a subhypergraph. A conjecture of Anstee and Sali predicts the asymptotic behaviour of forb(m,F) for fixed F.
Raggi, Miguel
core
Advanced Materials, EarlyView.Multiphase printable organohydrogels with tunable microstructures are developed to control molecular transport pathways for immiscible cargo. The tortuosity and domain size of the colloidal phases are tuned by adjusting temperature and shear during processing, which enables the tailoring of diffusion kinetics due to different transport pathways.
Riley E. Dowdy‐Green +4 more
wiley +1 more source
Toward an asymptotic behaviour of the ABC dynamo
, 2015 The ABC flow was originally introduced by Arnol'd to investigate Lagrangian chaos. It soon became the prototype example to illustrate magnetic-field amplification via fast dynamo action, i.e.
Bouya, Ismaël, Dormy, Emmanuel
core +3 more sources
Asymptotic behaviour in linear viscoelasticity [PDF]
Quarterly of Applied Mathematics, 1994 We study the asymptotic behaviour of the solution of the viscoelastic equation, and we prove for a bounded domain that the energy associated to this system approaches zero exponentially as time goes to infinity. Moreover, for the whole space R n {\mathbb {R}^n} we will prove that
openaire +2 more sources
Spectral Tuning of Hyperbolic Shear Polaritons in Monoclinic Gallium Oxide via Isotopic Substitution
Advanced Materials, EarlyView.Spectral tuning of highly directional hyperbolic shear polaritons is realized via isotopic substitution of 16O to 18O in monoclinic β$\beta$‐phase gallium oxide. A red‐shift of almost 40 cm−1 is experimentally demonstrated with near‐field imaging, corroborated by the permittivity change extracted from far‐field experiments and density functional theory.
Giulia Carini +28 more
wiley +1 more source
On asymptotic behaviour of oscillatory solutions for fourth order differential equations
Electronic Journal of Differential Equations, 2007 We establish sufficient conditions for the linear differential equations of fourth order $$ (r(t)y'''(t))' =a(t)y(t)+b(t)y'(t)+c(t)y''(t)+f(t) $$ so that all oscillatory solutions of the equation satisfy $$ lim_{toinfty}y(t)=lim_{toinfty}y'(t)=lim_ ...
Seshadev Padhi, Chuanxi Qian
doaj
Advanced Materials Interfaces, EarlyView.Using femtosecond ablation, we show that an ordered, stoichiometric crystalline PdSe2 target can be controllably converted into a stable, disordered, non‐stoichiometric, and highly functional amorphous nanomaterial, PdSe2−x${\rm PdSe}_{2-x}$. The obtained nanoparticles offer significant advantages over conventional planar plasmon‐free substrates due to
Andrei Ushkov +18 more
wiley +1 more source
Flexible, Integrated‐Porous Microneedle Sensor for Biofluid Sampling and On‐Site Biomarker Detection
Advanced Materials Technologies, EarlyView.A paper‐integrated porous PGA microneedle array patch capable of both high strength and absorption capacity is proposed. With an image‐processing system, an optimized colorimetric sensor achieves a low limit of detection of 0.09 mm in cholesterol.
Haitao Deng +3 more
wiley +1 more source
Electronic Journal of Differential Equations, 1998 In this article, we study the hyperbolic problem $$ K(x,t)u_{tt} - sum_{j=1}^nleft(a(x,t)u_{x_j} ight) + F(x,t,u,abla u) = 0 $$ coupled with boundary conditions $$u=0,quadhbox{on }Gamma_1,, quad {partial u overpartialu} + Beta(x)u_t =0quadhbox{ on ...
Marcelo M. Cavalcanti +2 more
doaj