Results 41 to 50 of about 31,463 (266)

On Koopman and Perron-Frobenius operators of random dynamical systems

open access: yesESAIM: Proceedings and Surveys, 2014
In this paper, we investigate the Koopman and the Perron-Frobenius operators of random dynamical systems in general setting. Moreover, we give some necessary and sufficient conditions for the existence of invariant densities for the ...
Hmissi Mohamed
doaj   +1 more source

Entanglement Membrane in Chaotic Many-Body Systems

open access: yesPhysical Review X, 2020
In certain analytically tractable quantum chaotic systems, the calculation of out-of-time-order correlation functions, entanglement entropies after a quench, and other related dynamical observables reduces to an effective theory of an “entanglement ...
Tianci Zhou, Adam Nahum
doaj   +1 more source

Dynamic properties of network motifs contribute to biological network organization. [PDF]

open access: yesPLoS Biology, 2005
Biological networks, such as those describing gene regulation, signal transduction, and neural synapses, are representations of large-scale dynamic systems. Discovery of organizing principles of biological networks can be enhanced by embracing the notion
Robert J Prill   +2 more
doaj   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

Linear stability analysis of large dynamical systems on random directed graphs

open access: yesPhysical Review Research, 2020
We present a linear stability analysis of stationary states (or fixed points) in large dynamical systems defined on random, directed graphs with a prescribed distribution of indegrees and outdegrees.
Izaak Neri, Fernando Lucas Metz
doaj   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

Random dynamical systems on time scales

open access: yesElectronic Journal of Differential Equations, 2012
The purpose of this paper is to prove the existence and uniqueness of solution for random dynamic systems on time scales.
Cristina Lungan, Vasile Lupulescu
doaj  

Theory of the Loschmidt echo and dynamical quantum phase transitions in disordered Fermi systems

open access: yesPhysical Review Research, 2023
In this work we develop the theory of the Loschmidt echo and dynamical phase transitions in noninteracting strongly disordered Fermi systems after a quench.
Tuomas I. Vanhala, Teemu Ojanen
doaj   +1 more source

Plasma extrachromosomal circular DNA as a biomarker in EGFR‐targeted therapy of non‐small cell lung cancer

open access: yesMolecular Oncology, EarlyView.
Detection of extrachromosomal circular DNA (eccDNA) in plasma samples from EGFR‐mutated non‐small cell lung cancer patients. Plasma was collected before and during treatment with the EGFR‐tyrosine kinase inhibitor osimertinib. Plasma eccDNA was detected in all cancer samples, and the presence of the EGFR gene on eccDNA serves as a potential biomarker ...
Simone Stensgaard   +5 more
wiley   +1 more source

On the Criticality of Adaptive Boolean Network Robots

open access: yesEntropy, 2022
Systems poised at a dynamical critical regime, between order and disorder, have been shown capable of exhibiting complex dynamics that balance robustness to external perturbations and rich repertoires of responses to inputs.
Michele Braccini   +3 more
doaj   +1 more source

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