Zobrazeno 1 - 10
of 4 063
pro vyhledávání: '"LI Mengmeng"'
Publikováno v:
National Science Open, Vol 2 (2023)
The strength $ σ_{y}(D)$ of a polycrystal can decrease or increase with the grain diameter $D$, i.e., the famous Hall-Petch (HP) and inverse-Hall-Petch (IHP) behaviors, respectively. However, $ σ_{y}(D)$ under thick grain boundaries (GBs) (i.e., GB
Externí odkaz:
https://doaj.org/article/b83d98190ba242fb8a25e379dce5398d
Autor:
Ma Wanzhuo, Yin Peng, Li Mengmeng, Sui Lu, Wang Tianshu, Liu Zheqi, Du Lei, Bao Wenli, Ge Yanqi
Publikováno v:
Nanophotonics, Vol 10, Iss 16, Pp 3967-3977 (2021)
Graphdiyne has an inborn band gap energy, where the minimal band gap is about from 0.46 to 1.22 eV, which shows great potential in ultrafast laser generation. In this work, we fabricate a graphdiyne-decorated microfiber and demonstrate its saturable
Externí odkaz:
https://doaj.org/article/8f7a24c4a8e043c7be4ac7213fefd894
The strength, $\sigma_{\rm y}$, of a polycrystal decreases with mean grain diameter $D$ at $D\gtrsim50$ atoms (i.e. Hall-Petch behaviour) and increases at $D\lesssim50$ (i.e. inverse Hall-Petch behaviour). Our simulations generalise $\sigma_{\rm y}(D
Externí odkaz:
http://arxiv.org/abs/2410.18139
Follow-The-Regularized-Leader (FTRL) algorithms often enjoy optimal regret for adversarial as well as stochastic bandit problems and allow for a streamlined analysis. Nonetheless, FTRL algorithms require the solution of an optimization problem in eve
Externí odkaz:
http://arxiv.org/abs/2409.20440
Autor:
Ma, Lei, Yan, Ziyun, Li, Mengmeng, Liu, Tao, Tan, Liqin, Wang, Xuan, He, Weiqiang, Wang, Ruikun, He, Guangjun, Lu, Heng, Blaschke, Thomas
Deep learning has gained significant attention in remote sensing, especially in pixel- or patch-level applications. Despite initial attempts to integrate deep learning into object-based image analysis (OBIA), its full potential remains largely unexpl
Externí odkaz:
http://arxiv.org/abs/2408.01607
Detecting small moving objects in complex backgrounds from an overhead perspective is a highly challenging task for machine vision systems. As an inspiration from nature, the avian visual system is capable of processing motion information in various
Externí odkaz:
http://arxiv.org/abs/2404.00855
Publikováno v:
E3S Web of Conferences, Vol 360, p 01065 (2022)
A S-band miniaturized circularly polarized microstrip antenna is designed and fabricated. The curved current technique is utilized, and the effective path length of current is increased by loading the U-shaped slot on the radiating patch. Thus the an
Externí odkaz:
https://doaj.org/article/a39b7b6f0e524b36b772506f20665e04
Publikováno v:
Engineering, Construction and Architectural Management, 2023, Vol. 31, Issue 9, pp. 3679-3705.
Externí odkaz:
http://www.emeraldinsight.com/doi/10.1108/ECAM-09-2022-0820
Motivated by policy gradient methods in the context of reinforcement learning, we identify a large deviation rate function for the iterates generated by stochastic gradient descent for possibly non-convex objectives satisfying a Polyak-{\L}ojasiewicz
Externí odkaz:
http://arxiv.org/abs/2311.07411