Results 251 to 260 of about 177,002 (308)

Ultrafast Dynamics of Spin Current and Electron Temperature in Spintronic Terahertz Emitters

Advanced Science, EarlyView.
This work quantifies optical‐pump‐induced THz transmission variations to reveal electron and lattice temperature dynamics and presents time‐resolved THz spectral maps for sub‐picosecond analysis. A 63 ± 8 fs time lag between THz emission and laser excitation is identified, serving as an intrinsic parameter limiting the upper frequency of spintronic THz
Yifan Wang, Zuanming Jin, Miao Cai, Zhiqiang Lan, Zhenjie Ge, Zheng Feng, Wei Tan, Alexei V. Balakin, Alexander P. Shkurinov, Yan Peng, Yiming Zhu   +10 more
wiley   +1 more source

A Partitioned Finite Difference Method for Heat Transfer with Moving Line and Plane Heat Sources. [PDF]

Entropy (Basel)
Li J, Jiang Y.
europepmc   +1 more source

Modification of a poroelastic model for zero porosity: finite element implementation and investigation of fluid mechanics in the perivascular space. [PDF]

Biomech Model Mechanobiol
Jannesari M, Ghitti B, Gluckman BJ, Costanzo F.   +3 more
europepmc   +1 more source

Computational analysis of a spatiotemporal model of cancer-immune-chemotherapy dynamics with nonlinear diffusive interactions using spectral technique. [PDF]

Sci Rep
Shi H, Khan SU, Khan FU, Muhammad T, Alshehri A, Nasrat MK.   +5 more
europepmc   +1 more source

Adaptive finite-time fault-tolerant control scheme of UAV against combined faults. [PDF]

Sci Rep
Yan X, Li T, Tian Y.
europepmc   +1 more source

PAC-ZNN for Robust Target Tracking in WSNs Against Complex Polynomial Noise. [PDF]

Sensors (Basel)
Zhan Z, Song Z, Huang S, Xie Q, Xiao X.
europepmc   +1 more source

Effects of attachment designs on clear aligner tooth movement: A finite element analysis. [PDF]

PLoS One
Alsharif K, Ngan P, Guan G, Mamboleo E, Ouldyerou A, Merdji A, Mukdadi OM.   +6 more
europepmc   +1 more source

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On Finite-Time Convergence of Actor-Critic Algorithm

IEEE Journal on Selected Areas in Information Theory, 2021
Actor-critic algorithm and their extensions have made great achievements in real-world decision-making problems. In contrast to its empirical success, the theoretical understanding of the actor-critic seems unsatisfactory. Most existing results only show the asymptotic convergence, which is developed mainly based on approximating the dynamic system of ...
Shuang Qiu, Zhuoran Yang, Jieping Ye, Zhaoran Wang 0001   +3 more
openaire   +1 more source

Overparameterized model parameter recovering with finite‐time convergence

International Journal of Adaptive Control and Signal Processing, 2022
SummaryIn this article, we consider the online parameter estimation problem for overparameterized linear regression models. Many estimation methods require at least the interval excitation condition, which is not always fulfilled for such models, especially in normal operation.
Alexey Ovcharov, Alexey Vedyakov, Sviatolav Kazak, Anton Pyrkin   +3 more
openaire   +2 more sources

Memory-Augmented System Identification With Finite-Time Convergence

IEEE Control Systems Letters, 2021
This letter presents a memory-augmented system identifier with finite-time convergence for continuous-time uncertain nonlinear systems. A memory of events with significant effect on the performance of the identifier is formed, and reuse of historic data is leveraged in the identifier’s update law to guarantee that the identifier’s error converges to ...
Amin Vahidi-Moghaddam, Majid Mazouchi, Hamidreza Modares   +2 more
exaly   +2 more sources