Results 51 to 60 of about 1,514,651 (306)

A data-driven framework for continuous parameter-space categorization of nonlinear dynamical systems using discrete simulations

Engineering Science and Technology, an International Journal
Parameter space categorization in nonlinear dynamical systems is usually based on discrete data, which creates limitations because system responses are sensitive to minor changes in parameters.
Haseeba Sajjad, Adil Jhangeer, Lubomír Říha   +2 more
doaj   +1 more source

Constraints on running vacuum models with the baryon-to-photon ratio

European Physical Journal C: Particles and Fields, 2022
We study the influence of running vacuum on the baryon-to-photon ratio in running vacuum models (RVMs). The photon and baryon number densities, from photon decoupling to the present day, are obtained in the context of RVMs by assuming that photons and ...
Hao Yu, Ke Yang, Jin Li
doaj   +1 more source

The coefficient of dynamism of a nonlinear oscillator

Bulletin of the National Technical University «KhPI» Series: Dynamics and Strength of Machines, 2017
Nonlinear oscillations caused by the initial deviation of the oscillator from the equilibrium position or the initial velocity given to it in this position are considered. It is assumed that the restoring force is proportional to the sine of the displacement of the oscillatory system. There are two variants of the sine: trigonometric and hyperbolic. In
Olshanskiy, V. P., Olshanskiy, S. V.
openaire   +3 more sources

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

FEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

Monitoring the Path to the Elimination of Infectious Diseases

Tropical Medicine and Infectious Disease, 2017
During the endgame of elimination programs, parasite populations may exhibit dynamical phenomena not typical of endemic disease. Particularly, monitoring programs for tracking infection prevalence may be hampered by overall rarity, the sporadic and ...
John M. Drake, Simon I. Hay
doaj   +1 more source

Coefficients estimation in the dynamic equations of motion of an AUV

Instrumentation viewpoint, 2015
This article is about the development of the equations of the movement in 6 DOF of AUV (Autonomous Underwater Vehicle) SIRENA carried out by students of UPCT. As it is a pre-programmed submersible, one of the main targets is to model mathematically the movement of the submarine to achieve simulations of it.
Robles Carrasco, Guillermo, Viedma Robles, Antonio, Collado Toledo, Ana   +2 more
openaire   +4 more sources

Invisible but not inaccessible—Revealing transient oligomers formed by intrinsically disordered proteins with solution NMR and complementary methods

FEBS Letters, EarlyView.
Transient oligomers formed by intrinsically disordered proteins may be ‘invisible’ to direct detection yet remain accessible to solution NMR through equilibrium‐exchange measurements and pressure‐jump experiments. Complementary methods report on mass, stoichiometry, selected distance distributions, morphology, and internal packing.
Martin D. Gelenter, Ad Bax
wiley   +1 more source

USP29‐regulated noncanonical stabilization of the hypoxia‐inducible factor‐α in aggressive prostate cancer

Molecular Oncology, EarlyView.
We identify USP29 as the only DUB mirroring CA9 expression, a marker of hypoxia and HIF pathway activation associated with PCA aggressiveness. USP29 stabilizes HIF‐1α and HIF‐2α via a noncanonical mechanism that is independent of PHD/pVHL activity yet relies on proteasomal regulation, establishing USP29 as a previously unrecognized regulator of hypoxic
Amelie S Schober, Leire Moreno‐Cugnon, Laura Martínez‐Pérez, Amaia Ercilla, Amaia Zabala‐Letona, Adrián Vicente‐Barrueco, Maider Fagoaga‐Eugui, Saioa Garcia‐Longarte, Blanca Calle‐Ciborro, Encarnación Pérez‐Andrés, Onintza Carlevaris, Sara Pozo, Isabel Mendizabal, Ugo Mayor, Arkaitz Carracedo, Violaine Sée, Edurne Berra   +16 more
wiley   +1 more source

Difference in boreal winter predictability between two dynamical cores of Community Atmosphere Model 5

Environmental Research Letters, 2023
This study investigates the sensitivity of the boreal winter prediction skill of Community Atmosphere Model 5 to the choice of the dynamical core. Both finite volume (FV) and spectral element (SE) dynamical cores are tested.
Ha-Rim Kim, Baek-Min Kim, Yong-Sang Choi, Sang-Yoon Jun, Seok-Woo Son   +4 more
doaj   +1 more source

Gradient Infinite-Dimensional Random Dynamical Systems [PDF]

, 2012
In this paper we introduce the concept of a gradient random dynamical system as a random semiflow possessing a continuous random Lyapunov function which describes the asymptotic regime of the system.
Caraballo Garrido, Tomás, Langa Rosado, José Antonio, Liu, Zenxhin   +2 more
core   +1 more source