Results 41 to 50 of about 1,034,399 (260)

Fixed-time convergent consensus algorithm of networked nonholonomic multi-agent systems [PDF]

2020 59th IEEE Conference on Decision and Control (CDC), 2020
In this paper, the problem of fixed-time leader-follower consensus problem of nonholonomic multi-agent systems is under study. Using the "desingularisation method" introduced in the seminal paper by J.M. Coron [5], new fixed-time controllers/observers for the double integrator system are designed. Following those results, a switching consensus protocol
Defoort, Michael, Floquet, Thierry, Perruquetti, Wilfrid   +2 more
openaire   +2 more sources

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

FEBS 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

Using the Logistic Map as Compared to the Cubic Map to Show the Convergence and the Relaxation of the Period–1 Fixed Point

International Journal of Mathematics and Mathematical Sciences, 2022
In this paper, we employ the logistic map and the cubic map to locate the relaxation and the convergence to the periodic fixed point of a system, specifically, the period—1 fixed point.
Patrick Akwasi Anamuah Mensah, William Obeng-Denteh, Ibrahim Issaka, Kwasi Baah Gyamfi, Joshua Kiddy K. Asamoah   +4 more
doaj   +1 more source

Density-potential mappings in quantum dynamics

, 2012
In a recent letter [Europhys. Lett. 95, 13001 (2011)] the question of whether the density of a time-dependent quantum system determines its external potential was reformulated as a fixed point problem.
A. Bielecki, A. L. Fetter, A. Zettl, C. A. Ullrich, D. H. Griffel, E. Engel, K. J. H. Giesbertz, L. C. Evans, M. Bonitz, M. Penz, M. Ruggenthaler, Ph. Blanchard, R. M. Dreizler, R. van Leeuwen, W. A. Light, W. Walter   +15 more
core   +1 more source

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

FEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

Practical Bipartite Tracking for Networked Robotic Systems via Fixed-Time Estimator-Based Control

Complexity, 2021
In this paper, the fixed-time practical bipartite tracking problem for the networked robotic systems (NRSs) with parametric uncertainties, input disturbances, and directed signed graphs is investigated.
Peng Su, Jinqiang Gan, Teng-Fei Ding, Chang-Duo Liang, Ming-Feng Ge   +4 more
doaj   +1 more source

Mechanisms of parasite‐mediated disruption of brain vessels

FEBS Letters, EarlyView.
Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira, Sílvia Arroz‐Madeira, Cláudio A. Franco, Sara Silva Pereira   +3 more
wiley   +1 more source

Error-Constrained Fixed-Time Synchronized Trajectory Tracking Control for Unmanned Airships with Disturbances

Drones
This work focuses on fixed-time synchronized trajectory tracking control for unmanned airships subject to time-varying error constraints and unknown disturbances.
Jie Chen, Jiace Yuan, Ruohan Li
doaj   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

FEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source