Results 51 to 60 of about 437 (174)

Dynamics of Downdrafts Around a Growing Convective Cloud: A Numerical Study

open access: yesJournal of Geophysical Research: Atmospheres, Volume 130, Issue 22, 28 November 2025.
Abstract We examine the dynamics of cloud‐edge downdrafts over the growth phase of isolated cumuli, combining Eulerian and Lagrangian analyses. As in previous studies, our results show that growing cumuli are surrounded by downdrafts linked to cloud‐scale quasi‐toroidal circulations at all times at middle and upper cloud levels consistent with the ...
Lianet Hernández Pardo   +2 more
wiley   +1 more source

Nonoscillatory solutions of higher order delay equations

open access: yesJournal of Mathematical Analysis and Applications, 1980
where f is a continuous real valued function for f > 0 and x E R such that f(t, x) is nondecreasing in x for fixed t, and xf(t, x) > 0 if x # 0. The delay function g(t) is continuous and satisfies g(t) to in that it satisfies for r>, t, x(t)x”‘(t) > 0 for i = 0, l,..., I, and (-1)“’ ‘x(t)x”‘(t) < 0, i = 1 + 1, I + 2 ,..., n.
Foster, K.E, Grimmer, R.C
openaire   +2 more sources

Computational Fluid Dynamics of the Flow of the Deformable Toroidal Embolic Agents Within Straight and Stenotic Pipes by Full Eulerian FSI Method

open access: yesInternational Journal for Numerical Methods in Biomedical Engineering, Volume 41, Issue 9, September 2025.
We numerically analyzed the flow and deformation of a toroidal embolic agent in straight and stenotic pipes with full Eulerian fluid‐structure interaction. The fluid passes through the hole of the torus, and the deformation is categorized into three deformation modes such as bending, rotation, and elongation.
Kazuki Matsumiya   +4 more
wiley   +1 more source

Quasi-adjoint third order difference equations: oscillatory and asymptotic behavior

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1986
In this paper, asymptotic properties of solutions ofΔ3Vn+Pn−1Vn+1=0          (E+)are investigated via the quasi-adjoint equationΔ3Un+PnUn+2=0.             (E−)A necessary and sufficient condition for the existence of oscillatory solutions of (E+) is ...
B. Smith
doaj   +1 more source

Oscillation of the per capita growth rate

open access: yesمجلة بغداد للعلوم, 2005
in this paper cquations of the per capita growth rate are considered sufficient conditions for oscillation of all solutions are obtained the asymptotie behavior of the nonoscillatory solution of all souliotions are ...
Baghdad Science Journal
doaj   +1 more source

Existence of nonoscillatory solutions tending to zero of third-order neutral dynamic equations on time scales

open access: yesAdvances in Difference Equations, 2020
We study the existence of nonoscillatory solutions tending to zero of a class of third-order nonlinear neutral dynamic equations on time scales by employing Krasnoselskii’s fixed point theorem. Two examples are given to illustrate the significance of the
Yang-Cong Qiu   +3 more
doaj   +1 more source

An Explicit Factorization of the Green's Function for an Acoustic Half‐Space Problem with Impedance Boundary Conditions into an Oscillatory Exponential and a Slowly Varying Function

open access: yesMathematical Methods in the Applied Sciences, Volume 48, Issue 13, Page 12807-12812, September 2025.
ABSTRACT In this paper, new representations of the Green's function for an acoustic d$$ d $$‐dimensional half‐space problem with impedance boundary conditions are presented. The main features of the new representation are in addition to additive terms that appear also in the case of Dirichlet or Neumann boundary conditions, the remaining part of the ...
C. Lin, J. M. Melenk, S. Sauter
wiley   +1 more source

A Review of Green's Function Methods for Tracer Timescales and Pathways in Ocean Models

open access: yesJournal of Advances in Modeling Earth Systems, Volume 17, Issue 7, July 2025.
Abstract Understanding advective‐diffusive dispersal of trace substances in environmental fluids like the global ocean is a ubiquitous challenge in geophysics. Since the turn of the millennium, substantial progress has been made in the theory, implementation in models, and application of such tracers in oceanography.
Thomas W. N. Haine   +3 more
wiley   +1 more source

Nonlinear oscillations in disconjugate forced functional equations with deviating arguments

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1983
For the equation Lnv(t)+a(t)h(y(g(t)))=f(t) where Lny(t)=pn(t)(pn−1(t)(…(p1(t)(po(t)y(t))′)′…)′)′ sufficient conditions have been found for all of its solutions to be oscillatory.
Bhagat Singh
doaj   +1 more source

New Oscillation Criteria for H‐Difference Equation With Oscillatory Periodic Coefficients

open access: yesMathematical Methods in the Applied Sciences, Volume 48, Issue 8, Page 8696-8701, 30 May 2025.
ABSTRACT In this manuscript, new oscillation criteria are given for solutions of h‐order delay difference equation in the equation (1.1). There, four cases of p$$ p $$ are considered: for α∈ℕ$$ \alpha \in \mathbb{N} $$, as oscillatory periodic sequences with periods 2α,(2α+1)$$ 2\alpha, \left(2\alpha +1\right) $$ and (α+1)$$ \left(\alpha +1\right ...
Yasar Bolat, Reyhan Gokteke
wiley   +1 more source

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