Results 11 to 20 of about 285,369 (255)

On Discrete Time Wilson Systems [PDF]

open access: yesJournal of Mathematics, 2020
In this paper, we define the discrete time Wilson frame (DTW frame) for l2ℤ and discuss some properties of discrete time Wilson frames. Also, we give an interplay between DTW frames and discrete time Gabor frames.
Teena Kohli, Suman Panwar, S. K. Kaushik
doaj   +2 more sources

Controlling hopf bifurcations: Discrete-time systems [PDF]

open access: yesDiscrete Dynamics in Nature and Society, 2000
Bifurcation control has attracted increasing attention in recent years. A simple and unified state-feedback methodology is developed in this paper for Hopf bifurcation control for discrete-time systems. The control task can be either shifting an existing
Guanrong Chen   +3 more
doaj   +2 more sources

Discrete time model of sexual systems

open access: yesHeliyon, 2023
Small factors are the biggest contributors to the biggest changes in an ecosystem which may lead to its demise. Simple things such as tweaking the humidity or tampering with the temperature can be the downfall of the habitants and the ecosystem itself ...
Uygun Jamilov   +2 more
doaj   +1 more source

Stability Criterion for Discrete-Time Systems

open access: yesJournal of Inequalities and Applications, 2010
This paper is concerned with the problem of delay-dependent stability analysis for discrete-time systems with interval-like time-varying delays. The problem is solved by applying a novel Lyapunov functional, and an improved delay-dependent stability ...
K. Ratchagit, Vu N. Phat
doaj   +2 more sources

Finite-time stability of discrete-time systems with time-varying delay [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2012
Finite-time stability can be used in all applications where large values of the state are not acceptable. In this paper, finite-time stability problem for a class of linear time-varying delay systems is studied. Based on Lyapunov-like functions method
Stojanović Sreten B.   +2 more
doaj   +1 more source

Approximate Controllability of Abstract Discrete-Time Systems

open access: yesAdvances in Difference Equations, 2010
Approximate controllability for semilinear abstract discrete-time systems is considered. Specifically, we consider the semilinear discrete-time system , , where are bounded linear operators acting on a Hilbert space , are -valued bounded linear ...
Hernán R. Henríquez   +1 more
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Discrete–Time Output Observers for Boundary Control Systems

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2021
The paper studies the output observer design problem for a linear infinite-dimensional control plant modelled as an abstract boundary input/output control system.
Emirsajłow Zbigniew
doaj   +1 more source

Some results on cascade discrete-time systems

open access: yesDiscrete Dynamics in Nature and Society, 2006
We present sufficient conditions for global asymptotic stability of cascade discrete-time systems. Considering failure of the global asymptotic stability in some cascade systems, we give an estimate of the region of attraction of the systems.
Xiao-Ming Bai   +2 more
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Optimal Finite-time Control of Positive Linear Discrete-time Systems [PDF]

open access: yesJournal of Electrical and Computer Engineering Innovations, 2016
This paper considers solving optimization problem for linear discrete time systems such that closed-loop discrete-time system is positive (i.e., all of its state variables have non-negative values) and also finite-time stable.
Gholam Reza Rezaei   +2 more
doaj   +1 more source

Discrete mechanics, “time machines” and hybrid systems

open access: yesEPJ Web of Conferences, 2013
Modifying the discrete mechanics proposed by T.D. Lee, we construct a class of discrete classical Hamiltonian systems, in which time is one of the dynamical variables.
Elze Hans-Thomas
doaj   +1 more source

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