Results 51 to 60 of about 7,200,415 (325)

Approximate Solution of a Class of Highly Oscillatory Integral Equations Using an Exponential Fitting Collocation Method

Journal of Mathematics, 2023
This paper deals with the numerical solution of a class of highly oscillatory Volterra integral equations by collocation methods based on the exponential fitting technique.
S. Khudhair Abbas, S. Sohrabi, H. Ranjbar   +2 more
doaj   +1 more source

Addressing the challenges of implementation of high-order finite volume schemes for atmospheric dynamics of unstructured meshes [PDF]

, 2016
The solution of the non-hydrostatic compressible Euler equations using Weighted Essentially Non-Oscillatory (WENO) schemes in two and three-dimensional unstructured meshes, is presented.
Drikakis, Dimitris, Tsoutsanis, Panagiotis   +1 more
core   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

Non-oscillatory behaviour of higher order functional differential equations of neutral type

Electronic Journal of Differential Equations, 2007
In this paper, we obtain sufficient conditions so that the neutral functional differential equation $$displaylines{ ig[r(t) [y(t)-p(t)y(au (t))]'ig]^{(n-1)} + q(t) G(y(h(t))) = f(t) }$$ has a bounded and positive solution.
Laxmi Narayan Padhy, Prayag Prasad Mishra, Niyati Misra, Radhanath Rath   +3 more
doaj  

Approximate solutions of Korteweg-de Vries-Benjamin-Bona-Mahony-Burgers equation with dissipative terms

Journal of Low Frequency Noise, Vibration and Active Control
In this paper, the Korteweg-de Vries-Benjamin-Bona-Mahony-Burgers (KdV-BBM-B) equation is investigated which plays an essential role in numerous subjects of engineering and science.
Chun-Yan Qin, Yao-Hong Li, Pan-Li Ma, Shou-Bo Jin   +3 more
doaj   +1 more source

Monotonicity conditions in oscillation to superlinear differential equations

Electronic Journal of Qualitative Theory of Differential Equations, 2016
We consider the second order differential equation \[ \bigl(a(t)|x^{\prime}|^{\alpha}\operatorname{sgn\,}x^{\prime}\bigr)^{\prime }+b(t)|x|^{\beta}\operatorname{sgn\,}x=0 \] in the super-linear case ...
Zuzana Dosla, Mauro Marini
doaj   +1 more source

Global Behavior of an Arbitrary-Order Nonlinear Difference Equation with a Nonnegative Function

Mathematics, 2020
Let k , l be two integers with k ≥ 0 and l ≥ 2 , c a real number greater than or equal to 1, and f a multivariable function satisfying f ( w 1 , w 2 , w 3 , ⋯ , w l ) ≥ 0 when w 1 , w 2 ≥ 0 .
Wen-Xiu Ma
doaj   +1 more source

Oscillating Friedman Cosmology

, 1995
The non-singular, oscillating Friedman cosmology within the framework of General Relativity is considered. The general oscillatory solution given in terms of elliptic functions and the conditions for its existence are discussed. It is shown that the wall-
Dabrowski, Mariusz P.
core   +2 more sources

Oscillatory behavior of solutions of Volterra summation equations

Applied Mathematics Letters, 1999
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Graef, J.R., Thandapani, E.
openaire   +2 more sources

Conserved structural motifs in PAS, LOV, and CRY proteins regulate circadian rhythms and are therapeutic targets

FEBS Letters, EarlyView.
Cryptochrome and PAS/LOV proteins play intricate roles in circadian clocks where they act as both sensors and mediators of protein–protein interactions. Their ubiquitous presence in signaling networks has positioned them as targets for small‐molecule therapeutics. This review provides a structural introduction to these protein families.
Eric D. Brinckman, Anna E. Lester, Brian D. Zoltowski   +2 more
wiley   +1 more source