Results 31 to 40 of about 2,745 (110)

Uniform attractors for non-autonomous wave equations with nonlinear damping

, 2006
We consider dynamical behavior of non-autonomous wave-type evolutionary equations with nonlinear damping, critical nonlinearity, and time-dependent external forcing which is translation bounded but not translation compact (i.e., external forcing is not ...
Chepyzhov V. V., Chepyzhov V. V., Chepyzhov V. V., Chunyou Sun, Daomin Cao, Jinqiao Duan, Pata V.   +6 more
core   +1 more source

Influence of Velocity Feedback Time Delay on the Nonlinear Dynamic Characteristics of Maglev Trains Under Unsteady Aerodynamic Forces

International Journal of Mechanical System Dynamics, Volume 5, Issue 4, Page 707-720, December 2025.
ABSTRACT Time delays frequently arise in active control systems due to sensor sampling, signal transmission, and actuator response, making their effects on system dynamics non‐negligible. This paper investigates how velocity feedback time delay influences the nonlinear dynamic characteristics of a maglev train subjected to unsteady aerodynamic forces ...
Jia‐Xuan Li, Zhi‐Wei Liu, Xiang Liu
wiley   +1 more source

Time Dependent Saddle Node Bifurcation: Breaking Time and the Point of No Return in a Non-Autonomous Model of Critical Transitions

, 2019
There is a growing awareness that catastrophic phenomena in biology and medicine can be mathematically represented in terms of saddle-node bifurcations.
Huang, Sui, Li, Jeremiah, Qian, Hong, Ye, Felix X. -F.   +3 more
core   +1 more source

Normalized solutions of the critical Schrödinger–Bopp–Podolsky system with logarithmic nonlinearity

Transactions of the London Mathematical Society, Volume 12, Issue 1, December 2025.
Abstract In this paper, we study the following critical Schrödinger–Bopp–Podolsky system driven by the p$p$‐Laplace operator and a logarithmic nonlinearity: −Δpu+V(εx)|u|p−2u+κϕu=λ|u|p−2u+ϑ|u|p−2ulog|u|p+|u|p*−2uinR3,−Δϕ+a2Δ2ϕ=4π2u2inR3.$$\begin{equation*} {\begin{cases} -\Delta _p u+\mathcal {V}(\varepsilon x)|u|^{p-2}u+\kappa \phi u=\lambda |u|^{p-2 ...
Sihua Liang, Xueqi Sun, Shuaishuai Liang, Vicenţiu D. Rădulescu   +3 more
wiley   +1 more source

Optimized Machine Learning for Autonomous Enzymatic Reaction Intensification in a Self‐Driving Lab

Biotechnology and Bioengineering, Volume 122, Issue 11, Page 3018-3036, November 2025.
A machine learning‐powered self‐driving lab accelerates enzymatic reaction optimization by autonomously navigating complex parameter spaces. Through over 10,000 simulated campaigns, we identified an optimal algorithm for efficient, automated optimization.
Sebastian Putz, Niklas Teetz, Michael Abt, Pascal Jerono, Thomas Meurer, Matthias Franzreb   +5 more
wiley   +1 more source

On quantum averaging, quantum KAM and quantum diffusion

, 2012
For nonautonomous Hamiltonian systems and their quantisations we discuss properties of the quantised systems, related to those of the corresponding classical systems, described by the KAM-related theories: the proper KAM, the averaging theory, the ...
A. I. Neishtadt, Anatolii I Neishtadt, J. Sjöstrand, M. V. Berry, N. N. Nekhoroshev, Sergei B Kuksin, V. A. Borovikov, V. I. Arnold, А. И. Нейштадт, В. А. Боровиков, В. И. Арнольд, В. И. Арнольд, В. И. Арнольд, В. П. Маслов, Л. Д. Ландау, М. В. Карасeв, Н. Н. Нехорошев   +16 more
core   +2 more sources

Generalized φ‐Pullback Attractors in Time‐Dependent Spaces: Application to a Nonautonomous Wave Equation With Time‐Dependent Propagation Velocity

Mathematical Methods in the Applied Sciences, Volume 48, Issue 14, Page 13456-13474, 30 September 2025.
ABSTRACT We present sufficient conditions to obtain a generalized (φ,D)$$ \left(\varphi, \mathfrak{D}\right) $$‐pullback attractor for evolution processes on time‐dependent phase spaces, where φ$$ \varphi $$ is a given decay function and D$$ \mathfrak{D} $$ is a given universe.
Matheus Cheque Bortolan, Carlos Pecorari Neto, Heraclio López Lázaro, Paulo N. Seminario Huertas   +3 more
wiley   +1 more source

Dopamine D1 Receptor Contributes to Glucocorticoid‐Associated Osteonecrosis of Femoral Head Protection Through the ATF3/CHOP Axis to Inhibit Osteoblastic Apoptosis

Advanced Science, Volume 12, Issue 33, September 4, 2025.
This work identifies a novel mechanism by which dopamine D1 receptor (DRD1) contributes to the pathogenesis of glucocorticoid (GC)‐associated osteonecrosis of the femoral head (ONFH) through the regulation of osteoblastic apoptosis, indicating that DRD1 serves as a critical mediator of the crosstalk between the nervous and skeletal systems.
Kai Zheng, Wenming Li, Tianhao Wang, Gaoran Ge, Wei Zhang, Yi Qin, Wenhao Li, Zebin Wu, Zhen Wang, Gang Rui, Yaozeng Xu, Dechun Geng   +11 more
wiley   +1 more source

Zebrafish as a Versatile Model Organism: From Tanks to Treatment

MedComm – Future Medicine, Volume 4, Issue 3, September 2025.
The zebrafish, with its optical transparency and genetic tractability, serves as a versatile in vivo platform for biomedical research. This review underscores its significance in modeling a wide spectrum of human diseases—from cancer to metabolic disorders—and in leveraging cutting‐edge technologies like CRISPR and TALENs.
Rupali Srivastava, Kalyani Eswar, Sasvat Sayee Ram Ramesh, Akshit Prajapati, Tanvi Sonpipare, Apoorva Basa, Mounika Gubige, Sribala Ponnapalli, Shashidhar Thatikonda, Aravind Kumar Rengan   +9 more
wiley   +1 more source

Learning Physically Interpretable Atmospheric Models From Data With WSINDy

Journal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 3, September 2025.
Abstract The multiscale and turbulent nature of Earth's atmosphere has historically rendered accurate weather modeling a hard problem. Recently, there has been an explosion of interest surrounding data‐driven approaches to weather modeling, which in many cases show improved forecasting accuracy and computational efficiency when compared to traditional ...
Seth Minor, Daniel A. Messenger, Vanja Dukic, David M. Bortz   +3 more
wiley   +1 more source