Results 11 to 20 of about 19,330,588 (265)

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

Adaptive myriad filter with time-varying noise- and signal-dependent parameters

open access: yesРадіоелектронні і комп'ютерні системи, 2022
The research subject of this article is the methods of locally adaptive filtering of non-stationary signals. The goal is to develop a locally-adaptive algorithm for non-stationary noise (from the viewpoint of its time-varying variance) suppression in ...
Nataliya Tulyakova, Oleksandr Trofymchuk
doaj   +1 more source

Estimating time-varying treatment effects in longitudinal studies

open access: yes, 2023
Longitudinal study designs are frequently used to investigate the effects of a naturally observed predictor (treatment) on an outcome over time. Because the treatment at each time point or wave is not randomly assigned, valid inferences of its causal ...
Dongning Ren, Wen Wei Loh
core   +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

Credit Risk Theoretical Model on the Base of DCC-GARCH in Time-Varying Parameters Framework

open access: yesMathematics, 2021
The research paper is devoted to developing a mathematical approach for dealing with time-varying parameters in rolling window logit models for credit risk assessment.
Nikita Moiseev   +5 more
doaj   +1 more source

State estimation for discrete-time neural networks with Markov-mode-dependent lower and upper bounds on the distributed delays [PDF]

open access: yes, 2012
Copyright @ 2012 Springer VerlagThis paper is concerned with the state estimation problem for a new class of discrete-time neural networks with Markovian jumping parameters and mixed time-delays.
Liu, Y, Liu, X, Wang, Z
core   +1 more source

Probability-guaranteed H∞ finite-horizon filtering for a class of nonlinear time-varying systems with sensor saturations [PDF]

open access: yes, 2012
This is the Post-Print version of the Article. The official published version can be accessed from the link below - Copyright @ 2012 ElsevierIn this paper, the probability-guaranteed H∞ finite-horizon filtering problem is investigated for a class of ...
Wang, Z, Stergioulas, LK, Hu, J, Gao, H
core   +1 more source

Prediction of Modal Parameters of Linear Time-Varying Systems

open access: yesShock and Vibration, 2010
Many engineering structures, such as cranes, traffic-excited bridges, flexible mechanisms and robotic devices exhibit characteristics that vary with time and are referred to as time-varying or nonstationary.
S. Marchesiello   +2 more
doaj   +1 more source

songjun-wu/Time-varying-SSA: Source codes for time-varying SSA

open access: yes, 2021
This release includes the source codes for time-varying spatial sensitivity analysis.
songjun-wu
core   +1 more source

GPI-repetitive control for linear systems with parameter uncertainty / variation

open access: yesTecnoLógicas, 2015
Robust repetitive control problems for uncertain linear systems have been considered by different approaches. This article proposes the use of Repetitive Control and Generalized Proportional Integral (GPI) Control in a complementary fashion.
John A. Cortés-Romero   +1 more
doaj   +1 more source

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