Results 21 to 30 of about 342,569 (169)

New Criteria for Oscillation of Advanced Noncanonical Nonlinear Dynamic Equations

open access: yesMathematics
In this study, novel criteria are derived to ensure the oscillation of solutions in nonlinear advanced noncanonical dynamic equations. The obtained results are reminiscent of the criteria proposed by Hille and Ohriska for canonical dynamic equations ...
Taher S. Hassan   +3 more
doaj   +1 more source

Oscillation criteria for second-order nonlinear delay dynamic equations of neutral type

open access: yesAdvances in Difference Equations, 2018
We investigate oscillatory behavior of solutions to a class of second-order nonlinear neutral delay dynamic equations with nonpositive neutral coefficients. In particular, we study the corresponding noncanonical neutral differential equations.
Ming Zhang   +5 more
doaj   +1 more source

A limit set trichotomy for order-preserving systems on time scales

open access: yesElectronic Journal of Differential Equations, 2004
In this paper we derive a limit set trichotomy for abstract order-preserving 2-parameter semiflows in normal cones of strongly ordered Banach spaces. Additionally, to provide an example, Muller's theorem is generalized to dynamic equations on arbitrary ...
Christian Poetzsche, Stefan Siegmund
doaj  

Study on the kinetics of tomato storage quality under water and fertilizer coupling

open access: yesTechnology in Horticulture
To improve the storage quality of tomatoes, an optimized water and fertilizer management scheme was developed by exploring the dynamic effects of water-fertilizer coupling on tomato quality during storage.
Yanchao Yang   +8 more
doaj   +1 more source

Exponential P-stability of stochastic $\nabla$-dynamic equations on disconnected sets

open access: yesElectronic Journal of Differential Equations, 2015
The aim of this article is to consider the existence of solutions, finiteness of moments, and exponential p-stability of stochastic $\nabla$-dynamic equations on an arbitrary closed subset of $\mathbb{R}$, via Lyapunov functions.
Huu Du Nguyen   +2 more
doaj  

ESTIMASI PARAMETER PADA SISTEM MODEL PERSAMAAN SIMULTAN DATA PANEL DINAMIS DENGAN METODE 2 SLS GMM-AB

open access: yesMedia Statistika, 2018
Single equation models ignore interdependencies or two-way relationships between response variables. The simultaneous equation model accommodates this two-way relationship form.
Arya Fendha Ibnu Shina
doaj   +1 more source

A Lyapunov Function For Logistic Equation On Time Scales

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2018
In this study we focus on the stability of dynamic logistic equation which is used in single species population dynamics. Here we have introduced a quadratic Lyapunov function for generalized dynamic logistic equation on time scales.
Veysel Fuat Hatipoğlu
doaj   +1 more source

Simplification of Galactic Dynamic equations [PDF]

open access: yesSymmetry, 2020
Most fully developed galaxies have vivid spiral structure, but the formation and evolution of spiral structure is still a mystery that is not fully understood in astrophysics. We find that the currently used equations of galactic dynamics contain some unreasonable components.
openaire   +2 more sources

Dynamic Modeling and Solution of 6-DOF Parallel Mechanism

open access: yesIEEE Access, 2022
When a parallel robot used in a scene that requires force control, rapid attitude adjustment, or precise positioning, we need to know the dynamic characteristics of the moving platform and the motion branch, so it is necessary to do the dynamic analysis ...
Xuedong Jing, Cheng Li
doaj   +1 more source

Continuum equations for stellar dynamics [PDF]

open access: yes, 2003
12 pages, 2 figures, RevTeX 4 style. To appear in Stellar Astrophysical Fluid Dynamics: Proceedings of the Chateau de Mons meeting in honour of Douglas Gough's 60th birthday (Cambridge University Press, 2003)
Spiegel, Edward A., Thiffeault, Jean-Luc
openaire   +2 more sources

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