Zobrazeno 1 - 10
of 2 440
pro vyhledávání: '"MENG Ke"'
Autor:
Jing Cheng Liang, Lei Zhang, Zhangjie Luo, Rui Zhe Jiang, Zhang Wen Cheng, Si Ran Wang, Meng Ke Sun, Shi Jin, Qiang Cheng, Tie Jun Cui
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-12 (2024)
Abstract The powerful capability of reconfigurable intelligent surfaces (RISs) in tailoring electromagnetic waves and fields has put them under the spotlight in wireless communications. However, the current designs are criticized due to their poor fr
Externí odkaz:
https://doaj.org/article/26b949d753244b53a4123778aef02d0b
Autor:
Si Ran Wang, Jun Yan Dai, Jun Chen Ke, Zhan Ye Chen, Qun Yan Zhou, Zhen Jie Qi, Ying Juan Lu, Yan Huang, Meng Ke Sun, Qiang Cheng, Tie Jun Cui
Publikováno v:
Advanced Science, Vol 11, Iss 19, Pp n/a-n/a (2024)
Abstract Micro‐Doppler effect is a vital feature of a target that reflects its oscillatory motions apart from bulk motion and provides an important evidence for target recognition with radars. However, establishing the micro‐Doppler database pose
Externí odkaz:
https://doaj.org/article/1a07ea98cac446e69966addd27295095
Autor:
Yuanhao Zhang, Min Zhou, Jingyi Hou, Jinming Zhang, Chuanhai Zhou, Yi Long, Meng Ke, Yiyong Tang, Rui Yang
Publikováno v:
Orthopaedic Surgery, Vol 15, Iss 8, Pp 2157-2166 (2023)
Objective Patch technology has been the new technique in the treatment of partial thickness of the rotator cuff tear (PTRCTs) to address the limitation of traditional techniques. Compared with allogeneic patches and artificial materials, coracoacromi
Externí odkaz:
https://doaj.org/article/5b6b79a74b16484a9f034f66eb8ca270
Publikováno v:
IEEE Photonics Journal, Vol 14, Iss 6, Pp 1-5 (2022)
We propose and demonstrate a broadband and low-random-phase-errors 2 × 2 optical switch on thin-film lithium niobate platform. The proposed switch is based on a typical Mach-Zehnder interferometer constructed with two 2 × 2 3-dB multimode interfero
Externí odkaz:
https://doaj.org/article/a273bdeeefea417e90e0c07c439d87fb
Publikováno v:
IEEE Photonics Journal, Vol 14, Iss 2, Pp 1-5 (2022)
We propose a spot-size converter (SSC) by exploiting the high-efficiency mode conversion capability that a long-period grating (LPG) possesses. Our proof-of-concept LPG-based SSC, fabricated with optical polymer material on silicon nitride (Si3N4) pl
Externí odkaz:
https://doaj.org/article/b360e4d417e14cec8b00df178fe96c08
Publikováno v:
Frontiers in Pediatrics, Vol 11 (2023)
BackgroundCholedochal cyst (CDC) increases the risk (2.5%–30%) of malignancy. Metaplasia and dysplasia have been recognized as premalignant lesions among CDCs. This study aimed to evaluate the risk factors of metaplasia and dysplasia in CDC childre
Externí odkaz:
https://doaj.org/article/b8cad0bbcdc34db7ab7809e4a97b0c28
Publikováno v:
BMC Cancer, Vol 21, Iss 1, Pp 1-13 (2021)
Abstract Background Shear wave elastography can evaluate tissue stiffness. Previous studies showed that the elasticity characteristics of breast lesions were related to the components of extracellular matrix which was regulated by transforming growth
Externí odkaz:
https://doaj.org/article/2bc3f1d24ca94a37b0e83fdab6551ca3
Autor:
Chang, Chen-Ming, Wei, Jun-Jie, Meng, Ke-Lai, Zhang, Song-Bo, Gao, Hao-Xuan, Geng, Jin-Jun, Wu, Xue-Feng
The gravitational time delays of macro-lenses can be used to constrain the rest mass of the photon with high accuracy. Assuming a point-mass $+$ external shear lens model, we prove that an upper limit of the photon mass can be derived directly from t
Externí odkaz:
http://arxiv.org/abs/2412.09806
Let $\mu$ be a compactly supported positive finite Borel measure on $\R^{d}$. Let $0<\lambda_{1}\leq\lambda_{2}\leq\ldots$ be eigenvalues of the Kre$\breve{{\i}}$n-Feller operator $\Delta_{\mu}$. We prove that, on a bounded domain, the nodal set of a
Externí odkaz:
http://arxiv.org/abs/2411.14173
Autor:
Wang, Si Ran, Chen, Zhan Ye, Chen, Shao Nan, Dai, Jun Yan, Zhang, Jun Wei, Qi, Zhen Jie, Wu, Li Jie, Sun, Meng Ke, Zhou, Qun Yan, Li, Hui Dong, Luo, Zhang Jie, Cheng, Qiang, Cui, Tie Jun
Modern radar typically employs a chain architecture that consists of radio-frequency (RF) and intermediate frequency (IF) units, baseband digital signal processor, and information display. However, this architecture often results in high costs, signi
Externí odkaz:
http://arxiv.org/abs/2410.07576