Results 61 to 70 of about 626,225 (308)

Classical stability of BTZ black hole in new massive gravity

, 2011
We study the stability of the BTZ black hole in the new massive gravity. This is a nontrivial task because the linearized equation around the BTZ black hole background is a fourth order differential equation. Away from the critical point of $m^2 l^2=1/2$,
Kim, Yong-Wan, Moon, Taeyoon, Myung, Yun Soo, Park, Young-Jai   +3 more
core   +1 more source

Sharp oscillation theorem for fourth-order linear delay differential equations

Journal of Inequalities and Applications, 2022
In this paper, we present a single-condition sharp criterion for the oscillation of the fourth-order linear delay differential equation x ( 4 ) ( t ) + p ( t ) x ( τ ( t ) ) = 0 $$ x^{(4)}(t) + p(t)x\bigl(\tau (t)\bigr) = 0 $$ by employing a novel method
I. Jadlovská, J. Džurina, J. Graef, S. Grace   +3 more
semanticscholar   +1 more source

Predicting and Comparing the Subjective Health Experience of Older Cancer Survivors and Non‐Cancer Survivors: A Modeling Approach

Aging and Cancer, EarlyView.
This study underscores the significant influence of frailty and vitality on the subjective health experience of older cancer survivors with acceptance and control emerging as salient mediators. These findings affirm the conceptual and empirical robustness of the model highlighting its potential utility in shaping future interventions for older cancer ...
Damien S. E. Broekharst, Sjaak Bloem, Eline J. Mertens, Nathascha Hanzen, Michel van Agthoven   +4 more
wiley   +1 more source

Lessons Learned From a Delayed‐Start Trial of Modafinil for Freezing of Gait in Parkinson's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Freezing of gait (FOG) in people with Parkinson's disease (PwPD) is debilitating and has limited treatments. Modafinil modulates beta/gamma band activity in the pedunculopontine nucleus (PPN), like PPN deep brain stimulation. We therefore tested the hypothesis that Modafinil would improve FOG in PwPD.
Tuhin Virmani, Lakshmi Pillai, Reid D. Landes, Aliyah Glover, Shannon Doerhoff, Jennifer Kleiner, Mitesh Lotia, Rohit Dhall, Edgar Garcia‐Rill   +8 more
wiley   +1 more source

The compact eighth-order of approximation difference schemes for fourth-order differential equation

Қарағанды университетінің хабаршысы. Математика сериясы
Local and nonlocal boundary value problems (LNBVPs) related to fourth-order differential equations (FODEs) were explored. To tackle these problems numerically, we introduce novel compact four-step difference schemes (DSs) that achieve eighth-order of ...
A. Ashyralyev, I.M. Ibrahim
doaj   +1 more source

The Solution of Nonlinear Fourth-Order Differential Equation with Integral Boundary Conditions

Journal of Function Spaces, 2014
An iterative algorithm is proposed for solving the solution of a nonlinear fourth-order differential equation with integral boundary conditions. Its approximate solution un(x) is represented in the reproducing kernel space.
Yanli Fu, Huanmin Yao
doaj   +1 more source

Multiplicity of positive solutions for a fourth-order quasilinear singular differential equation

Electronic Journal of Qualitative Theory of Differential Equations, 2010
This paper is concerned with the multiplicity of positive solutions of boundary value problem for the fourth-order quasilinear singular differential equation $$ (|u''|^{p-2}u'')''=\lambda g(t)f(u),\quad 00$.
Zhichang Guo, Jingxue Yin, Yuanyuan Ke
doaj   +1 more source

Critical gravity on AdS2 spacetimes

, 2011
We study the critical gravity in two dimensional AdS (AdS$_2$) spacetimes, which was obtained from the cosmological topologically massive gravity (TMG$_\Lambda$) in three dimensions by using the Kaluza-Klein dimensional reduction.
M. Abramowitz, S. Deser, Yong-Wan Kim, Young-Jai Park, Yun Soo Myung   +4 more
core   +1 more source

Effect of Foot Orthoses on Midfoot Pain and the Volume of Bone Marrow Lesions in the Midfoot: A Randomized Mechanism of Action Study

Arthritis Care &Research, EarlyView.
Objective Foot orthoses are thought to improve pain by potentially modifying internal mechanical forces. To test this, we explored whether foot orthoses can modify patterns of bone marrow lesions (BMLs) in people with midfoot pain. Methods Forty‐two people were recruited with midfoot pain, and magnetic resonance imaging–confirmed midfoot BMLs ...
Jill Halstead, Anne‐Maree Keenan, Philip G. Conaghan, Dennis McGonagle, Anthony C. Redmond   +4 more
wiley   +1 more source

An Improved Criterion for the Oscillation of Fourth-Order Differential Equations

Mathematics, 2020
The main purpose of this manuscript is to show asymptotic properties of a class of differential equations with variable coefficients r ν w ‴ ν β ′ + ∑ i = 1 j q i ν y κ g i ν = 0 , where ν ≥ ν 0 and w ν : = y ν + p ν y σ ν .
O. Bazighifan, M. Ruggieri, A. Scapellato   +2 more
semanticscholar   +1 more source