Results 51 to 60 of about 436 (179)

Improvements on the Leighton‐type oscillation criteria for impulsive differential equations and extension to non‐canonical case

open access: yesMathematical Methods in the Applied Sciences, Volume 48, Issue 4, Page 5315-5324, 15 March 2025.
We investigate the oscillatory behavior of solutions of second‐order linear differential equations with impulses. These equations can be categorized into two types: canonical and non‐canonical. This study examines the canonical and non‐canonical impulsive differential equations in connection with the famous Leighton‐type oscillation theorem.
A. Zafer, S. Doğru Akgöl
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 Eulerian formulation for the computational modeling of phase‐contrast MRI

open access: yesMagnetic Resonance in Medicine, Volume 93, Issue 2, Page 828-841, February 2025.
Abstract Purpose Computational simulation of phase‐contrast MRI (PC‐MRI) is an attractive way to physically interpret properties and errors in MRI‐reconstructed flow velocity fields. Recent studies have developed PC‐MRI simulators that solve the Bloch equation, with the magnetization transport being modeled using a Lagrangian approach.
Tomohiro Otani   +4 more
wiley   +1 more source

NONOSCILLATORY SOLUTIONS OF DELAY DIFFERENCE EQUATIONS WITH OSCILLATING COEFFICIENTS

open access: yesDemonstratio Mathematica, 2003
Using the analogy with differential equations with deviated argument the authors study non-oscillatory solutions of the scalar equation \[ \Delta y_k = P^o_ky_k + \sum_1^nP^i_ky_{k-K^i_k} \] with bounded coefficients satisfying an oscillation condition.
Bolat, Yaşar, Akin, Ömer
openaire   +2 more sources

A Generalised Power Synchronisation Loop Design for Performance Enhancement of Grid‐Forming Converter

open access: yesIET Smart Grid, Volume 8, Issue 1, January/December 2025.
A generalised power synchronisation loop (GPSL) is proposed to enable the adjustment of the inertia, the damping and stiffness characteristics of the GFM converter simultaneously. The flexibility and stability of GPSL in a single GFM converter system and multiple GFM converter system is analysed.
Yifeng Li   +3 more
wiley   +1 more source

Oscillation and nonoscillation theorems for some mixed difference equations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1992
In this paper we investigate the oscillatory and nonoscillatory behavior of solutions of certain mixed third and fourth order difference equations. Specific results are also obtained for the constant coefficient cases.
B. Smith, W. E. Taylor
doaj   +1 more source

A Review on High‐Speed Electromagnetic Flow Control and Applications Considering Numerical Methods, Simulations, and Experimental Research Data

open access: yesInternational Journal of Aerospace Engineering, Volume 2025, Issue 1, 2025.
Background: Electromagnetic flow control is crucial in hypersonic gas dynamics, with key aspects of boundary layer electromagnetic flow control reviewed, focusing on numerical methods, simulations, and experimental research. Numerical Methods: Challenges such as numerical stiffness and instability arise from the coupling of electromagnetic fields with ...
Yang Du, Jun Liu, Hao Chen
wiley   +1 more source

Oscillation of solutions to second-order nonlinear differential equations of generalized Euler type

open access: yesElectronic Journal of Differential Equations, 2013
We are concerned with the oscillatory behavior of the solutions of a generalized Euler differential equation where the nonlinearities satisfy smoothness conditions which guarantee the uniqueness of solutions of initial value problems, however, no ...
Asadollah Aghajani   +2 more
doaj  

Home - About - Disclaimer - Privacy