Results 101 to 110 of about 341,550 (314)

A blow-up result for a viscoelastic system in $R^n

open access: yesElectronic Journal of Differential Equations, 2007
In this paper we consider a coupled system of nonlinear viscoelastic equations. Under suitable conditions on the initial data and the relaxation functions, we prove a finite-time blow-up result.
Salim A. Messaoudi, Mohammad Kafini
doaj  

Accelerated Value Iteration for Nonlinear Zero-Sum Games with Convergence Guarantee

open access: yesGuidance, Navigation and Control
In this paper, an accelerated value iteration (VI) algorithm is established to solve the zero-sum game problem with convergence guarantee. First, inspired by the successive over relaxation theory, the convergence rate of the iterative value function ...
Yuan Wang   +3 more
doaj   +1 more source

Decay rates for solutions of semilinear wave equations with a memory condition at the boundary

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2002
In this paper, we study the stability of solutions for semilinear wave equations whoseboundary condition includes a integral that represents the memory effect.
M. L. Santos
doaj   +1 more source

Neurochemical Endpoints to Inform Early‐Stage Trials of Spinocerebellar Ataxia 2 and 3 in a Multisite Setting

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Neurochemical levels measured by brain MR spectroscopy (MRS) have been proposed as endpoints for clinical trials in early‐stage spinocerebellar ataxia (SCA) trials. We tested their trial‐readiness by quantifying neurochemicals in three affected brain regions in early‐stage cohorts of SCA2 and SCA3, examining their reproducibility in ...
James M. Joers   +19 more
wiley   +1 more source

Visualization of Minute Mechanical-Excitation/Relaxation Wave-front Propagation in Myocardial Tissue [PDF]

open access: yes, 2010
Unlike the case of skeletal muscle, the direction of myocardial contraction does not coincide with the direction of work necessary to eject the intraventricular blood, contributing to great complexity of the wall deformation sequence of cardiac ...
Hiroshi Kanai, Motonao Tanaka
core   +1 more source

Reduced relaxation function for the generalized QLV model. [PDF]

open access: yes, 2013
In each panel we plot, as a function of time, the step response of the linear part of the QLV model (Fig. 1B). Since we used the generalized QLV model there is a curve for each muscle length.
Christian Quaia (366503)   +2 more
core   +1 more source

The relaxation effect of prolonged expiratory breathing

open access: yesMental Illness, 2018
This study was performed to confirm that autonomic nervous activity is affected by breathing speed. I hypothesized that prolonged expiratory breathing would promote parasympathetic dominance, whereas rapid breathing would promote sympathetic dominance ...
Teruhisa Komori
doaj   +1 more source

T1 Over Squared Proton Density Ratio to Characterize Multiple Sclerosis Lesions

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Differentiating remyelinated from demyelinated lesions in MS remains challenging without histological confirmation. This study introduces the T1‐to‐PD2 ratio (TPR) imaging approach and evaluates its ability to characterize MS lesions alongside other quantitative MRI (qMRI) metrics. Methods Thirty individuals with MS (mean age: 47.5 ± 
Sarah J. Wright   +10 more
wiley   +1 more source

Regional left ventricular systolic function in patients with segmental early relaxation and normal coronary arteries [PDF]

open access: yes, 1984
The purpose of the study was to determine whether regional differences of left ventricular systolic function exist in patients with normal coronary arteries who manifest segmental early relaxation.
McFarland, Thomas M.   +4 more
core   +1 more source

Segmental Relaxation in Crosslinked Rubber [PDF]

open access: yes, 1995
Studies of the local segmental relaxation in rubbery networks reveal a variety of behaviors. In experiments on networks with labeled junctions, whereby the motion of the crosslink site is specifically monitored, the segmental relaxation function broadens,
C. M. Roland   +3 more
core   +3 more sources

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