Results 31 to 40 of about 787,654 (231)

Discrete- vs. Continuous-Time Modeling of Unequally Spaced Experience Sampling Method Data

open access: yesFrontiers in Psychology, 2017
The Experience Sampling Method is a common approach in psychological research for collecting intensive longitudinal data with high ecological validity. One characteristic of ESM data is that it is often unequally spaced, because the measurement intervals
Silvia de Haan-Rietdijk   +5 more
doaj   +1 more source

Global stability of discrete-time non-linear systems with descriptor standard and fractional positive linear parts and scalar feedbacks [PDF]

open access: yesArchives of Control Sciences, 2020
The global stability of discrete-time nonlinear systems with descriptor positive linear parts and positive scalar feedbacks is addressed. Sufficient conditions for the global stability of standard and fractional nonlinear systems are established.
Tadeusz, Kaczorek, Andrzej, Ruszewski
doaj   +1 more source

Analysis and comparison of the stability of discrete-time and continuous-time linear systems

open access: yesArchives of Control Sciences, 2016
The asymptotic stability of discrete-time and continuous-time linear systems described by the equations xi+1 = Ākxi and x(t) = Akx(t) for k being integers and rational numbers is addressed. Necessary and sufficient conditions for the asymptotic stability
Kaczorek Tadeusz
doaj   +1 more source

Geometry of discrete-time spin systems

open access: yes, 2015
Classical Hamiltonian spin systems are continuous dynamical systems on the symplectic phase space $(S^2)^n$. In this paper we investigate the underlying geometry of a time discretization scheme for classical Hamiltonian spin systems called the spherical ...
McLachlan, Robert I.   +2 more
core   +1 more source

A 90.9 dB SNDR 95.3 dB DR Audio Delta–Sigma Modulator with FIA-Assisted OTA

open access: yesSensors
This paper presents a low-power, high-gain integrator design that uses a cascode operational transconductance amplifier (OTA) with floating inverter–amplifier (FIA) assistance. Compared to a traditional cascode, the proposed integrator can achieve a gain
Gongxing Huang, Cong Wei, Rongshan Wei
doaj   +1 more source

Complex Dynamic Behaviors of a Modified Discrete Leslie–Gower Predator–Prey System with Fear Effect on Prey Species

open access: yesAxioms, 2022
A discrete modified Leslie–Gower prey-predator model considering the effect of fear on prey species is proposed and studied in this paper. First, we discuss the existence of equilibria and the local stability of the model.
Sijia Lin   +3 more
doaj   +1 more source

Intrinsic noise and discrete-time processes

open access: yes, 2013
A general formalism is developed to construct a Markov chain model that converges to a one-dimensional map in the infinite population limit. Stochastic fluctuations are therefore internal to the system and not externally specified. For finite populations
Alan J. McKane   +7 more
core   +1 more source

Discrete time quantum walks on percolation graphs [PDF]

open access: yes, 2014
Randomly breaking connections in a graph alters its transport properties, a model used to describe percolation. In the case of quantum walks, dynamic percolation graphs represent a special type of imperfections, where the connections appear and disappear
Jex, Igor   +3 more
core   +2 more sources

Interplay between circadian and other transcription factors—Implications for cycling transcriptome reprogramming

open access: yesFEBS Letters, EarlyView.
This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley   +1 more source

Formation Coordination Control of Leaderless Multi-AUV System with Double Independent Communication Topology and Nonconvex Control Input Constraints

open access: yesJournal of Marine Science and Engineering, 2023
In this paper, the formation coordination control of discrete-time distributed leaderless multiple autonomous underwater vehicle (AUV) system with double independent position–velocity communication topology and control inputs on a nonconvex set is ...
Zheping Yan   +4 more
doaj   +1 more source

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