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9 results on '"Yang, Taorui"'

1. Prototyping and real-world field trials of RIS-aided wireless communications

Author

Pei, Xilong, Yin, Haifan, Tan, Li, Cao, Lin, and Yang, Taorui

Subjects
Electrical Engineering and Systems Science - Signal Processing
Abstract

Reconfigurable intelligent surface (RIS) is a promising technology that has the potential to change the way we interact with the wireless propagating environment. In this paper, we design and fabricate an RIS system that can be used in the fifth generation (5G) mobile communication networks. We also propose a practical two-step spatial-oversampling codebook algorithm for the beamforming of RIS, which is based on the spatial structure of the wireless channel. This algorithm has much lower complexity compared to the two-dimensional full-space searching-based codebook, yet with only negligible performance loss. Then, a series of experiments are conducted with the fabricated RIS systems, covering the office, corridor, and outdoor environments, in order to verified the effectiveness of RIS in both laboratory and current 5G commercial networks. In the office and corridor scenarios, the 5.8 GHz RIS provided a 10-20 dB power gain at the receiver. In the outdoor test, over 35 dB power gain was observed with RIS compared to the non-deployment case. However, in commercial 5G networks, the 2.6 GHz RIS improved indoor signal strength by only 4-7 dB. The experimental results indicate that RIS achieves higher power gain when transceivers are equipped with directional antennas instead of omni-directional antennas., Comment: 10 pages, 21 figures

Published
2023

2. BotRGA: Neighborhood-Aware Twitter Bot Detection with Relational Graph Aggregation

Author

Wang, Weiguang, Wang, Qi, Zang, Tianning, Zhang, Xiaoyu, Liu, Lu, Yang, Taorui, Wang, Yijing, Hartmanis, Juris, Founding Editor, van Leeuwen, Jan, Series Editor, Hutchison, David, Editorial Board Member, Kanade, Takeo, Editorial Board Member, Kittler, Josef, Editorial Board Member, Kleinberg, Jon M., Editorial Board Member, Kobsa, Alfred, Series Editor, Mattern, Friedemann, Editorial Board Member, Mitchell, John C., Editorial Board Member, Naor, Moni, Editorial Board Member, Nierstrasz, Oscar, Series Editor, Pandu Rangan, C., Editorial Board Member, Sudan, Madhu, Series Editor, Terzopoulos, Demetri, Editorial Board Member, Tygar, Doug, Editorial Board Member, Weikum, Gerhard, Series Editor, Vardi, Moshe Y, Series Editor, Goos, Gerhard, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Franco, Leonardo, editor, de Mulatier, Clélia, editor, Paszynski, Maciej, editor, Krzhizhanovskaya, Valeria V., editor, Dongarra, Jack J., editor, and Sloot, Peter M. A., editor

Published
2024
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8. A selenide-based coumarin fluorescent probe for fluorescence imaging of hypochlorous acid in cells and zebrafish.

Author

He, Yan, Yang, Taorui, Lin, Bin, Fan, Jiaxin, and Han, Yifeng

Subjects
*COUMARINS, *HYPOCHLORITES, *FLUORESCENT probes, *FLUORESCENCE, *BRACHYDANIO, *STOKES shift
Abstract

Hypochlorous acid (HOCl) is widely recognized as a reactive oxygen species of considerable importance in biological systems, and its abnormal metabolism is closely related to various diseases. Therefore, accurately tracking and detecting the concentration levels of HOCl in living organisms hold significant importance in exploring its biological functionalities and related pathological mechanisms. In this work, a coumarin-based fluorescent probe, Cse, containing a selenide group has been developed for fluorescence imaging intracellular and zebrafish HOCl levels. On the basis of the specific oxidation reaction between hypochlorous acid and phenyl selenide, Cse displayed a remarkable fluorescence turn-on response to hypochlorous acid (over 30-fold increase) with a notable Stokes shift (approximately 112 nm), rapid response kinetics (Kobs = 0.389 min−1), and a low detection limit (10.5 nM). Moreover, biological imaging experiments demonstrated that probe Cse enables the visualization of HOCl in real-time through fluorescence imaging techniques, both in living HeLa cells and zebrafish specimens. The successful advancement of this probe provides a novel fluorescence imaging tool to investigate the biological mechanisms associated with diseases related to HOCl. [ABSTRACT FROM AUTHOR]

Published
2024
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