Results 111 to 120 of about 1,300,489 (353)
An oscillation theorem for a second order nonlinear differential equations with variable potential
Electronic Journal of Differential Equations, 2009 We obtain a new oscillation theorem for the nonlinear second-order differential equation $$ (a(t)x'(t))' + p(t)f(t, x(t), x'(t))+ q(t)g(x(t))=0,quad tin [0,infty), $$ via the generalization of Leighton's variational theorem.
Jagmohan Tyagi
doaj
Cosmological implications of baryon acoustic oscillation measurements [PDF]
, 2014 We derive constraints on cosmological parameters and tests of dark energy models from the combination of baryon acoustic oscillation (BAO) measurements with cosmic microwave background (CMB) data and a recent reanalysis of Type Ia supernova (SN) data. In
E. Aubourg +94 more
semanticscholar +1 more source
Mechanisms of De‐icing by Surface Rayleigh and Plate Lamb Acoustic Waves
Advanced Engineering Materials, EarlyView.Ice accretion impacts daily life, renewable energy generation, maintenance, and security in industries and aeronautics. Acoustic waves (AW) are a promising method for ice removal, although de‐icing mechanisms require further investigation to optimize energy efficiency.
Shilpi Pandey +15 more
wiley +1 more source
Advanced impulsive differential equations with piecewise constant arguments
Mathematical Modelling and Analysis, 2010 We prove the existence and uniqueness of the solutions of a class of first order nonhomogeneous advanced impulsive differential equations with piecewise constant arguments.
Hüseyin Bereketoglu +2 more
doaj +1 more source
Oscillation Criteria of Higher-order Neutral Differential Equations with Several Deviating Arguments
Mathematics, 2020 This work is concerned with the oscillatory behavior of solutions of even-order neutral differential equations. By using the technique of Riccati transformation and comparison principles with the second-order differential equations, we obtain a new ...
Osama Moaaz +2 more
doaj +1 more source
Thermodynamic constraints on the amplitude of quantum oscillations
, 2017 Magneto-quantum oscillation experiments in high temperature superconductors show a strong thermally-induced suppression of the oscillation amplitude approaching critical dopings---in support of a quantum critical origin of their phase diagrams.
McDonald, R. D. +3 more
core +1 more source
Advanced Engineering Materials, EarlyView.Hybrid materials enable high‐performance components but are challenging to process. This study explores an inductive heating concept with spray cooling for steel–aluminum specimens in a two‐step process including friction welding and cup backward extrusion.
Armin Piwek +7 more
wiley +1 more source
Portugaliae Mathematica, 2016 We study a singular one-dimensional parabolic problem with initial data in the BV space, i.e. the energy space, for various boundary data. We pay special attention to Dirichlet conditions, which need not be satisfied in a pointwise manner.
Milena Matusik, Piotr Rybka
openaire +2 more sources
The collective oscillation period of inter-coupled Goodwin oscillators [PDF]
arXiv, 2012 Many biological oscillators are arranged in networks composed of many inter-coupled cellular oscillators. However, results are still lacking on the collective oscillation period of inter-coupled gene regulatory oscillators, which, as has been reported, may be different from the oscillation period of an autonomous cellular oscillator.
arxiv
Gamma (40-100 Hz) oscillation in the hippocampus of the behaving rat
Journal of Neuroscience, 1995 The cellular generation and spatial distribution of gamma frequency (40– 100 Hz) activity was examined in the hippocampus of the awake rat. Field potentials and unit activity were recorded by multiple site silicon probes (5- and 16-site shanks) and wire ...
A. Bragin +5 more
semanticscholar +1 more source