Results 61 to 70 of about 9,050,649 (204)

Control of singularly perturbed hybrid stochastic systems [PDF]

Proceedings of 35th IEEE Conference on Decision and Control, 2001
Summary: We study a class of optimal stochastic control problems involving two different time scales. The fast mode of the system is represented by deterministic state equations whereas the slow mode of the system corresponds to a jump disturbance process.
Jerzy A. Filar, Vladimir Gaitsgory, Alain Haurie   +2 more
openaire   +3 more sources

Chiral Acoustic Phonon and Conservation of Pseudoangular Momentum in α‐Quartz

Advanced Materials, Volume 38, Issue 16, 17 March 2026.
Chiral acoustic phonons in α‐quartz are probed via Brillouin light scattering, exploiting the photon's helicity and the crystal's handedness. The interaction obeys a selection rule arising from pseudoangular momentum conservation, enabling direct optical access to phonon chirality in nonsymmorphic crystals.
Changsoo Kim, In‐Kook Hwang, Kyoung‐Woong Moon, Kyongmo An, Kyung‐Jin Lee, Jae‐Hyeon Ko, Byong‐Guk Park, Kwang‐Yong Choi, Chanyong Hwang   +8 more
wiley   +1 more source

On singularly perturbed Filippov systems

European Journal of Applied Mathematics, 2013
In this paper, we study singularly perturbed Filippov systems. More specifically, our main question is to know how the dynamics of Filippov systems is affected by singular perturbations. We extend the Fenichel theory developed in Fenichel (J. Differ. Equ., 1979, Vol. 31, pp. 53–98) to these systems.
Cardin, Pedro T., Da Silva, Paulo R., Teixeira, Marco A.   +2 more
openaire   +3 more sources

Laterally Oriented Dendritic Passivation via In Situ Zn Reconstruction for Stabilizing NiMo Catalysts under Dynamic Electrolysis

Advanced Science, Volume 13, Issue 16, 18 March 2026.
This study highlights the effectiveness of Zn‐induced dendrite layers in enhancing the durability of NiMo HER catalysts under dynamic electrochemical conditions. Through in situ dendritic passivation, the Zn‐NiMo catalyst preserves catalytic active sites and mitigates irreversible Ni oxidation/hydroxylation during repeated load fluctuation.
Taeyoung Jeong, Hyun‐Jae Park, Myeongjin Kim   +2 more
wiley   +1 more source

Degeneracy Sensing Light Detection and Ranging‐Inertial Simultaneous Localization and Mapping with Dual‐Layer Resistant Odometry and Scan‐Context Loop‐Closure Detection Backend in Diverse Environments

Advanced Intelligent Systems, Volume 8, Issue 3, March 2026.
This paper presents a degeneracy‐aware light detection and ranging (LiDAR)‐inertial framework that enhances LiDAR simultaneous localization and mapping performance in challenging environments. The proposed system integrates a dual‐layer robust odometry frontend with a Scan‐Context‐based loop‐closure detection backend.
Haoming Yang, Liye Zhao, Xukai Ding, Wenjun Li, Kehao Qi   +4 more
wiley   +1 more source

Securing the Unseen: A Comprehensive Exploration Review of AI‐Powered Models for Zero‐Day Attack Detection

Expert Systems, Volume 43, Issue 3, March 2026.
ABSTRACT Zero‐day exploits remain challenging to detect because they often appear in unknown distributions of signatures and rules. The article entails a systematic review and cross‐sectional synthesis of four fundamental model families for identifying zero‐day intrusions, namely, convolutional neural networks (CNN), deep neural networks (DNN ...
Abdullah Al Siam, Nuruzzaman Faruqui, Akm Azad, Mohammad Ali Moni   +3 more
wiley   +1 more source

Attenuation of arsenic trioxide‐induced endothelial injury: unveiling the protective role of ginkgolic acid through inhibition of TRPM4 SUMOylation: Evidence from Raman cellular imaging

VIEW, Volume 7, Issue 1, February 2026.
Inhibiting the SUMOylation modification of TRPM4 can prevent the vascular endothelial damage caused by ATO. Inhibition of TRPM4 SUMOylation, either pharmacologically by GA or genetically by the K618R mutation, protects against ATO‐induced vascular endothelial damage.
Ting‐Ting Tong, Ya‐Dong Xue, Yu‐Yao Zhang, Chun‐Xiao Yu, Xin‐Yu Yao, Yu‐Xuan Han, Kai Zhang, Mei‐Mei Shen, Yu Zhao, Yun‐Feng Cui, Zi‐Yue Ma, Yu‐Yang Fu, Yong‐Zhen Wang, Jing Jin, Ke Tang, Yang Liu, Yang Li, Rong Huo, Tao Ban   +18 more
wiley   +1 more source

Existence and rigorous asymptotics of the solutions of a class of singularly perturbed delay-differential equations

上海师范大学学报. 自然科学版, 2016
We consider the singularly perturbed delayed systems of Tichonov′s type with fast and slow variables in a fast bimolecular reaction model. By means of the boundary layer function method, sewing connection and the implicit function theorem, we prove the ...
WANG Na
doaj   +1 more source

Automatic Adaptive and Targeted Localized Refinement in Transient Structural Dynamic Simulations Using the Multiresolution Finite Wavelet Domain Method

International Journal for Numerical Methods in Engineering, Volume 127, Issue 1, 15 January 2026.
ABSTRACT The multiresolution finite wavelet domain method has been meticulously studied in numerous wave propagation simulations, showing excellent convergence properties and very fast computing times. The multiresolution procedure always starts with the coarse solution, and then finer solutions can be superimposed on the coarse solution until ...
Dimitris Dimitriou, Katerina Samara, Dimitris Saravanos   +2 more
wiley   +1 more source

Optimal Control of Linear Singularly Perturbed Systems via Eigenvalue Assignment [PDF]

Control and Optimization in Applied Mathematics
Optimal control of certain singularly perturbed systems, with slow and fast dynamics, presents notable challenges, including ill-conditioning, high dimensionality, and ill-posed algebraic Riccati equations.
Mehrnoosh Salehi Chegeni, Majid Yarahmadi   +1 more
doaj   +1 more source