Results 81 to 90 of about 2,439,766 (250)

Impulsive Delayed Lasota–Wazewska Fractional Models: Global Stability of Integral Manifolds [PDF]

open access: yes, 2019
In this paper we deal with the problems of existence, boundedness and global stability of integral manifolds for impulsive Lasota–Wazewska equations of fractional order with time-varying delays and variable impulsive perturbations. The main results
Gani Stamov   +3 more
core   +1 more source

Assessing the Impact of Promotions on Consumer Purchasing Behavior During Crises

open access: yesAgribusiness, EarlyView.
ABSTRACT Understanding how households modify their food expenditure decisions during times of crisis is essential because consumer purchasing behavior frequently changes during these times. This study looks at these behavioral shifts during the COVID‐19 pandemic, concentrating on how price sensitivity and response to sales promotions changed over the ...
Wafa Mehaba, José María Gil
wiley   +1 more source

Model predictive control with inline parameter adaptation for direct crystal growth rate regulation

open access: yesAIChE Journal, EarlyView.
Abstract In batch cooling crystallization, many interactive factors, including supersaturation, reactor dimensions, and operating conditions, govern crystal growth and significantly influence product properties. Variables such as temperature or refractive index are used as surrogate control variables but have limitations in capturing growth rate ...
Huitian Yu, Jiewen Zhao, Heiko Briesen
wiley   +1 more source

On exponential stability of functional differential equations with variable impulse perturbations

open access: yes, 2014
We consider a class of functional differential equations subject to perturbations, which vary in time, and we study the exponential stability of solutions of these equations using the theory of generalized ordinary differential equations and Lyapunov ...
Bonotto, E. M.   +2 more
core   +1 more source

Asymptotic properties of a stochastic nonautonomous competitive system with impulsive perturbations

open access: yesAdvances in Difference Equations, 2017
In this paper, a generalized nonautonomous stochastic competitive system with impulsive perturbations is studied. By the theories of impulsive differential equations and stochastic differential equations, we have established some asymptotic properties of
Liu Yang, Baodan Tian
doaj   +1 more source

On the oscillation of some impulsive parabolic equations with several delays [PDF]

open access: yes, 2011
summary:In this paper, several oscillation criteria are established for some nonlinear impulsive functional parabolic equations with several delays subject to boundary conditions.
Mazouzi, S., Atmania, R.
core   +1 more source

A stress‐balance‐based critical Weber number for droplets and bubbles

open access: yesAIChE Journal, EarlyView.
Abstract Predicting droplet and bubble breakup in turbulent flows is critical for optimizing multiphase flow processes such as emulsification and atomization. Traditional models based on a fixed critical Weber number (Wec$$ {We}_c $$) may not capture interfacial‐stress dominance in low‐viscosity fluids or viscous resistance in high‐viscosity droplets ...
Supratim S. Dipta   +4 more
wiley   +1 more source

Practical Stability in terms of Two Measures for Impulsive Differential Equations with “Supremum”

open access: yesInternational Journal of Differential Equations, 2011
The object of investigations is a system of impulsive differential equations with “supremum.” These equations are not widely studied yet, and at the same time they are adequate mathematical model of many real world processes in which the present state ...
S. G. Hristova, A. Georgieva
doaj   +1 more source

Experimental and numerical study of liquid–liquid systems using the Euler–Lagrange/VOF approach

open access: yesAIChE Journal, EarlyView.
Abstract Achieving stable liquid–liquid dispersions with controlled droplet size remains a challenge due to the complex interplay of dispersed phase viscosity, hydrodynamic conditions and interfacial interactions. This work presents a validated computational framework for droplet breakage and coalescence in liquid–liquid dispersions with variable ...
Pavel Krýsa   +3 more
wiley   +1 more source

Oscillation of impulsive conformable fractional differential equations

open access: yes, 2016
In this paper, we investigate oscillation results for the solutions of impulsive conformable fractional differential equations of the ...
Tariboon Jessada, Ntouyas Sotiris K.
core   +1 more source

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