Results 31 to 40 of about 261,209 (317)

Convex relaxations of componentwise convex functions

open access: yesComputers & Chemical Engineering, 2019
Published by Elsevier Science, Amsterdam [u.a.]
Najman, Jaromil   +2 more
openaire   +4 more sources

Existence and general stabilization of the Timoshenko system of thermo-viscoelasticity of type III with frictional damping and delay terms

open access: yesAdvances in Nonlinear Analysis, 2018
In this paper, we consider the following Timoshenko system of thermo-viscoelasticity of type III with frictional damping and delay terms:
Chen Miaomiao, Liu Wenjun, Zhou Weican
doaj   +1 more source

On the Williams—Watts function of dielectric relaxation [PDF]

open access: yesProceedings of the National Academy of Sciences, 1984
It has been observed over the past 15 years that experimental frequency-dependent dielectric constants of broad classes of materials including polymeric systems and glasses may be interpreted in terms of the Williams-Watts polarization decay function [Formula: see text] The exponent α and the time constant T depend ...
Michael F. Shlesinger   +1 more
openaire   +3 more sources

General decay for weak viscoelastic Kirchhoff plate equations with delay boundary conditions

open access: yesBoundary Value Problems, 2017
We consider a weak viscoelastic Kirchhoff plate model with time-varying delay in the boundary. By using a suitable energy and Lyapunov function, we obtain a decay rate for the energy, which depends on the behavior of g and α.
Sun-Hye Park, Jum-Ran Kang
doaj   +1 more source

General and optimal decay rates for a system of wave equations with damping and a coupled source term

open access: yesAIMS Mathematics
In this article, we aim to investigate the decay characteristics of a system consisting of two viscoelastic wave equations with Dirichlet boundary conditions, where the dispersion term and nonlinear weak damping term are taken into account.
Qian Li , Yanyuan Xing
doaj   +1 more source

A note on relaxed control functions

open access: yesJournal of Mathematical Analysis and Applications, 1986
AbstractIn [2] the relaxed control functions were defined as linear functionals on some Banach space L1(I, C(S)) of integrable functions with domain I and values in the space of real valued continuous functions defined on some compact set S. The purpose of this note is to extend the range of relaxed control functions to every function φ:I×S → R jointly
openaire   +2 more sources

Stability of initial-boundary value problem for quasilinear viscoelastic equations

open access: yesElectronic Journal of Differential Equations, 2020
We investigate the stability of the initial-boundary value problem for the quasilinear viscoelastic equation $$\displaylines{ |u_t|^{\rho}u_{tt}-\Delta u_{tt}-\Delta u+\int_0^tg(t-s)\Delta u(s)ds=0, \quad \text{in }\Omega\times(0,+\infty),\cr u=0 ...
Kun-Peng Jin, Jin Liang, Ti-Jun Xiao
doaj  

Analytical representations for relaxation functions of glasses [PDF]

open access: yesJournal of Non-Crystalline Solids, 2002
Analytical representations in the time and frequency domains are derived for the most frequently used phenomenological fit functions for non-Debye relaxation processes. In the time domain the relaxation functions corresponding to the complex frequency dependent Cole-Cole, Cole-Davidson and Havriliak-Negami susceptibilities are also represented in terms
Rudolf Hilfer, Rudolf Hilfer
openaire   +4 more sources

Possible role of human ribonuclease dicer in the regulation of R loops

open access: yesFEBS Open Bio, EarlyView.
R loops play an important role in regulating key cellular processes such as replication, transcription, centromere stabilization, or control of telomere length. However, the unscheduled accumulation of R loops can cause many diseases, including cancer, and neurodegenerative or inflammatory disorders. Interestingly, accumulating data indicate a possible
Klaudia Wojcik   +2 more
wiley   +1 more source

The effect of age and initial compression on the force relaxation response of the femur in elderly women

open access: yesRoyal Society Open Science, 2022
The effect of force amount, age, body weight and bone mineral density (BMD) on the femur's force relaxation response was analysed for 12 donors (age: 56–91 years). BMD and fracture load, FL, were estimated from clinical CT images.
Saulo Martelli
doaj   +1 more source

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