Results 51 to 60 of about 1,170,217 (311)

About Total Stability of a Class of Nonlinear Dynamic Systems Eventually Subject to Discrete Internal Delays

open access: yesInternational Journal of Differential Equations, 2021
This paper studies and investigates total stability results of a class of dynamic systems within a prescribed closed ball of the state space around the origin.
Manuel De la Sen
doaj   +1 more source

Generic pure quantum states as steady states of quasi-local dissipative dynamics [PDF]

open access: yes, 2017
We investigate whether a generic multipartite pure state can be the unique asymptotic steady state of locality-constrained purely dissipative Markovian dynamics. In the simplest tripartite setting, we show that the problem is equivalent to characterizing
Johnson, Peter D.   +3 more
core   +2 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Control bifurcations [PDF]

open access: yes, 2004
A parametrized nonlinear differential equation can have multiple equilibria as the parameter is varied. A local bifurcation of a parametrized differential equation occurs at an equilibrium where there is a change in the topological character of the ...
Chang, Dong Eui   +2 more
core   +2 more sources

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

On Exponential Stabilizability for a Class of Switched Nonlinear Systems with Mixed Time-Varying Delays

open access: yesDiscrete Dynamics in Nature and Society, 2014
We study the exponential stabilizability for a class of switched nonlinear systems with mixed time-varying delays. By using a new technique developed for positive systems, we design the average dwell time switching under which the switched nonlinear ...
Jie Qi, Yuangong Sun
doaj   +1 more source

Stabilizability in Impulsive Optimization Problems

open access: yesIFAC-PapersOnLine, 2019
Abstract We introduce the concepts of impulsive and of regular Sample and Euler stabilizability for impulsive control systems, where a cost is also considered. A condition guaranteeing the existence of a discontinuous stabilizing feedback such that the corresponding (impulsive or regular) sampling and Euler solutions have costs all bounded above by ...
Motta M., Lai A. C.
openaire   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

open access: yesFEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Function‐driven design of a surrogate interleukin‐2 receptor ligand

open access: yesFEBS Letters, EarlyView.
Interleukin (IL)‐2 signaling can be achieved and precisely fine‐tuned through the affinity, distance, and orientation of the heterodimeric receptors with their ligands. We designed a biased IL‐2 surrogate ligand that selectively promotes effector T and natural killer cell activation and differentiation. Interleukin (IL) receptors play a pivotal role in
Ziwei Tang   +9 more
wiley   +1 more source

Mean Square Capacity of Power Constrained Fading Channels with Causal Encoders and Decoders

open access: yes, 2015
This paper is concerned with the mean square stabilization problem of discrete-time LTI systems over a power constrained fading channel. Different from existing research works, the channel considered in this paper suffers from both fading and additive ...
Xiao, Nan, Xie, Lihua, Xu, Liang
core   +1 more source

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