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Is exponential stability achievable in singular perturbed delayed systems with time-varying parameters? A comprehensive analysis [PDF]

open access: yesHeliyon
The present article conducts an investigation into the phenomenon of exponential stability within singular perturbed delayed systems, incorporating time-varying parameters.
Ran Chen   +3 more
doaj   +2 more sources

Time-varying parameters of Croatian import demand [PDF]

open access: yesZbornik radova Ekonomskog fakulteta u Rijeci : časopis za ekonomsku teoriju i praksu, 2019
The paper aims to examine Croatian import demand elasticities to changes in income and relative prices while allowing time variation in parameters of import demand.
Mile Bošnjak   +2 more
doaj   +1 more source

Advances in estimating the Phillips curve

open access: yesJournal of Applied Economics, 2022
Many studies have documented the missing relationship between PCE inflation and the labor market slack in the last 20 years. This paper first presents evidence of a strong sensitivity of price inflation to labor market tightness once we remove the late ...
Hany Guirguis, Tin Shan (Michael) Suen
doaj   +1 more source

Online System Identification Method Using Modified Regularized Exponential Forgetting [PDF]

open access: yesTransactions of the VŠB-Technical University of Ostrava, Mechanical Series, 2013
The paper deals with the use of regularized exponential forgetting (REF) in the process of online system identification. The deployment of this type of forgetting strategy is advantageous for very long runs with small changes in the identified input ...
Ján VACHÁLEK, Michal BARTKO
doaj   +1 more source

The Dynamic Spillover Effects of Macroeconomic and Financial Uncertainty on Commodity Markets Uncertainties

open access: yesEconomies, 2021
The present paper has two main objectives: first, to accurately estimate commodity price uncertainty; and second to analyze the uncertainty connectedness among commodity markets and the macroeconomic uncertainty, using the time-varying vector ...
Hedi Ben Haddad   +2 more
doaj   +1 more source

Parameter Observer Useable for the Condition Monitoring of a Capacitor

open access: yesApplied Sciences, 2022
Monitoring the condition of electrolytic capacitors in practical applications is a topic that has been and remains the subject of much research. This article is part of research in this area. It develops a parameter observer (PO) and proposes its use for
Corneliu Bărbulescu   +2 more
doaj   +1 more source

Dynamics of the COVID-19 epidemic in Ireland under mitigation

open access: yesBMC Infectious Diseases, 2021
Background In Ireland and across the European Union the COVID-19 epidemic waves, driven mainly by the emergence of new variants of the SARS-CoV-2 have continued their course, despite various interventions from governments.
Bernard Cazelles   +3 more
doaj   +1 more source

Generic Advertising Wearout: The Case of the New York City Fluid Milk Campaign

open access: yesJournal of Agricultural and Resource Economics, 1996
This article examines two major generic fluid milk advertising campaigns in New York City during the 1986-92 period. Estimates from a time-varying parameter model show that the evolution of the impact of generic advertising on fluid milk sales over each ...
J. Carlos Reberte   +3 more
doaj   +1 more source

Stability Analysis of Markovian Jump System With Multi-Time-Varying Disturbances Based on Improved Interactive Convex Inequality and Positive Definite Condition

open access: yesIEEE Access, 2019
Time-varying disturbances not only exist in the external delay of Markovian jump system but also may exist in the transfer rate of internal probability transfer.
Liankun Sun, Nuo Xu
doaj   +1 more source

Stability analysis of fractional-order systems with randomly time-varying parameters

open access: yesNonlinear Analysis, 2021
This paper is concerned with the stability of fractional-order systems with randomly timevarying parameters. Two approaches are provided to check the stability of such systems in mean sense. The first approach is based on suitable Lyapunov functionals to
Dehua Wang, Xiao-Li Ding, Juan J. Nieto
doaj   +1 more source

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