Zobrazeno 1 - 10
of 161
pro vyhledávání: '"Sun Zhongwen"'
Publikováno v:
中西医结合护理, Vol 9, Iss 3, Pp 107-113 (2023)
Objective To investigate the status quo and influencing factors of psychological contract violation among ICU nurses in Guangzhou. Methods A total of 176 ICU nurses from 7 Grade III, Class A hospitals in Guangzhou were selected by convenience samplin
Externí odkaz:
https://doaj.org/article/dd09abe22f5c4edb98bcfb42163fd37f
Publikováno v:
矿业科学学报, Vol 5, Iss 1, Pp 67-75 (2020)
Aiming at the serious damage caused by the stress concentration in the isolated working face for a long time in the underground transportation roadway, the mining treatment of the isolated working face is carried out to reduce its influence on the st
Externí odkaz:
https://doaj.org/article/a7a8df0c24c443e3bbd1df03d0b61a49
Publikováno v:
矿业科学学报, Vol 4, Iss 1, Pp 50-57 (2019)
This paper study mainly on the reasonable haulage roadway position of successive panel between two adjoint panels .Relying on a mine for the project background,by the theoretical analysis,three zones in the vertical direction of the solid coal side w
Externí odkaz:
https://doaj.org/article/ff3041d3007849b681f4c634b3a3df07
Publikováno v:
矿业科学学报, Vol 3, Iss 5, Pp 470-476 (2018)
In view of the problem of the reserved width of coal pillar in the full-mechanized caving mining and the surrounding rock control technology of continuous working face in ultra-thick coal seam, the coal mining method of external-misaligned stagger ar
Externí odkaz:
https://doaj.org/article/9965bc57fbfa4a29b18c96fd7461d6c6
Publikováno v:
矿业科学学报, Vol 3, Iss 1, Pp 55-60 (2018)
By adjusting longwall top coal caving panel,gateroads on either end of the LMSG (longwall mining with split-level gateroads) panel are arranged at different levels within a coal seam,gateroads of the adjacent panels are offset spatially,unconventiona
Externí odkaz:
https://doaj.org/article/373cf65449ed48319660d2183423c1cf
Autor:
Wang, Xuehui, Shu, Feng, Wu, Yuanyuan, Shi, Weiping, Yan, Shihao, Zhao, Yifan, Cheng, Qiankun, Sun, Zhongwen, Wang, Jiangzhou
In this paper, an intelligent reflecting surface (IRS)-and-unmanned aerial vehicle (UAV)-assisted two-way amplify-and-forward (AF) relay network in maritime Internet of Things (IoT) is proposed, where ship1 ($\text{S}_1$) and ship2 ($\text{S}_2$) can
Externí odkaz:
http://arxiv.org/abs/2306.00412
Autor:
Chen, Yiwen, Shu, Feng, Jie, Qijuan, Zhan, Xichao, Wang, Xuehui, Sun, Zhongwen, Yan, Shihao, Cai, Wenlong, Zhang, Peng, Chen, Peng
To provide rapid direction finding (DF) for unmanned aerial vehicle (UAV) emitter in future wireless networks, a low-complexity direction of arrival (DOA) estimation architecture for massive multiple input multiple output (MIMO) receiver arrays is co
Externí odkaz:
http://arxiv.org/abs/2205.03269
Autor:
Dong, Rongen, Teng, Yin, Sun, Zhongwen, Zou, Jun, Huang, Mengxing, Li, Jun, Shu, Feng, Wang, Jiangzhou
Discrete phase shifters of intelligent reflecting surface (IRS) generates phase quantization error (QE) and degrades the receive performance at the receiver. To make an analysis of the performance loss caused by IRS with phase QE, based on the law of
Externí odkaz:
http://arxiv.org/abs/2204.06230
Autor:
Xia, Changbo, Jiang, Yue, Zhao, Yan, Chen, Zhuzi, Sun, Ying, Sun, Zhongwen, Cui, Ruijie, Tao, Weiwei
Publikováno v:
In International Immunopharmacology 15 November 2024 141
In this paper, with the help of an intelligent reflecting surface (IRS), the source (S) and destination (D) exchange information through the two-way decode-and-forward relay (TW-DFR). We mainly focus on the phase optimization of IRS to improve the sy
Externí odkaz:
http://arxiv.org/abs/2203.09185