Results 61 to 70 of about 10,261,192 (285)

Discrete prey-predator model with fear effect and strong Allee effect

Xi'an Gongcheng Daxue xuebao, 2023
The rich dynamic properties of a discrete prey-predator model with fear effect and strong Allee effect are studied. The piecewise constant argument method of differential equation is used to discretize the system, and the existence of equilibrium point ...
HU Xinli, LI Hanghang
doaj   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Strong Stability Preserving Two-Derivative Two-Step Runge-Kutta Methods

Mathematics
In this study, we introduce the explicit strong stability preserving (SSP) two-derivative two-step Runge-Kutta (TDTSRK) methods. We propose the order conditions using Albrecht’s approach, comparing to the order conditions expressed in terms of rooted ...
Xueyu Qin, Zhenhua Jiang, Chao Yan
doaj   +1 more source

Uniform stability of a strong time-delayed viscoelastic system with Balakrishnan–Taylor damping

Boundary Value Problems, 2023
This paper studies a Balakrishnan–Taylor viscoelastic wave equation with strong time-dependent delay. Under suitable assumptions on the coefficients of the delay term, we establish a generalized stability result, which improve some earlier results in the
Haiyan Li
doaj   +1 more source

Finite-Time Stability of a Second-Order Bang–Bang Sliding Control Type

Mathematics, 2022
This paper presents the double chain–integrator finite-time convergence in a closed loop with a second-order bang–bang sliding control. The direct Lyapunov method carried out the stability analysis and the reaching time estimation using a suitable non ...
Carlos Aguilar-Ibanez, Ivan J. Salgado Ramos, Miguel S. Suarez-Castanon, Jose de Jesus Rubio, Jesus A. Meda-Campana   +4 more
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

Fixed-Time Stability, Uniform Strong Dissipativity, and Stability of Nonlinear Feedback Systems

Mathematics
In this paper, we develop new necessary and sufficient Lyapunov conditions for fixed-time stability that refine the classical fixed-time stability results presented in the literature by providing an optimized estimate of the settling time bound that is ...
Wassim M. Haddad, Kriti Verma, Vijaysekhar Chellaboina   +2 more
doaj   +1 more source

Strong Stability Preserving Two-step Runge–Kutta Methods [PDF]

SIAM Journal on Numerical Analysis, 2011
We investigate the strong stability preserving (SSP) property of two-step Runge-Kutta (TSRK) methods. We prove that all SSP TSRK methods belong to a particularly simple subclass of TSRK methods, in which stages from the previous step are not used. We derive simple order conditions for this subclass.
Ketcheson, David I., Gottlieb, Sigal, Macdonald, Colin B.   +2 more
openaire   +5 more sources

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Strong Stability Preserving Explicit Linear Multistep Methods with Variable Step Size [PDF]

SIAM Journal on Numerical Analysis, 2015
Strong stability preserving (SSP) methods are designed primarily for time integration of nonlinear hyperbolic PDEs, for which the permissible SSP step size varies from one step to the next.
Yiannis Hadjimichael, D. Ketcheson, Lajos Lóczi, A. Németh   +3 more
semanticscholar   +1 more source