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Your search keyword '"Qiu, Jiyun"' showing total 10 results
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10 results on '"Qiu, Jiyun"'

1. A Reinforcement Learning Based Resource Access Strategy for Satellite-Terrestrial Integrated Networks

Author

Qiu, Jiyun, Zhang, Hao, Zhou, Li, Hu, Penghui, Wang, Jian, Akan, Ozgur, Editorial Board Member, Bellavista, Paolo, Editorial Board Member, Cao, Jiannong, Editorial Board Member, Coulson, Geoffrey, Editorial Board Member, Dressler, Falko, Editorial Board Member, Ferrari, Domenico, Editorial Board Member, Gerla, Mario, Editorial Board Member, Kobayashi, Hisashi, Editorial Board Member, Palazzo, Sergio, Editorial Board Member, Sahni, Sartaj, Editorial Board Member, Shen, Xuemin, Editorial Board Member, Stan, Mircea, Editorial Board Member, Jia, Xiaohua, Editorial Board Member, Zomaya, Albert Y., Editorial Board Member, and Jiang, Xiaolin, editor

Published
2023
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3. Rydberg state dynamics and fragmentation mechanism of N,N,N′,N′-tetramethylmethylenediamine.

Author

Ling, Fengzi, Cao, Ling, Wang, Yanmei, Wei, Jie, Luo, Zhigao, Hu, Zhe, Qiu, Jiyun, Liu, Dejun, Wang, Pengfei, Song, Xinli, and Zhang, Song

Subjects
RYDBERG states, MASS spectrometry, PHOTOELECTRON spectra, DAUGHTER ions, SCISSION (Chemistry), TIME-resolved spectroscopy, PHOTOELECTRONS, COLLISION induced dissociation
Abstract

The non-adiabatic relaxation processes and the fragmentation dynamics of Rydberg-excited N,N,N′,N′-tetramethylmethylenediamine (TMMDA) are investigated using femtosecond time-resolved photoelectron imaging and time-resolved mass spectroscopy. Excitation at 208 nm populates TMMDA in a charge-localized 3p state. Rapid internal conversion (IC) to 3s produces two charge-delocalized conformers with independent time constants and distinct population ratios. As the system explores the 3s potential surface, the structural evolution continues on a 1.55 ps timescale, followed by a slower (12.1 ps) relaxation to the ground state. A thorough comparison of the time-dependent mass and photoelectron spectra suggests that ionization out of the 3p state ends up with the parent ion, the vibrational energy of which is insufficient for the bond cleavage. On the contrary, by virtue of the additional energy acquired by IC from 3p, the internal energy deposited in 3s is available to break the C–N bond, leading to the fragment ion. The fragmentation is found to occur on the ion surface instead of the Rydberg surface. [ABSTRACT FROM AUTHOR]

Published
2023
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4. Enhanced Frame Break Mechanism for ALOHA-Based RFID Anti-Collision Algorithm

Author

Zeng, Xiangjian, Qiu, Jiyun, Wang, Xijun, Chen, Xiang, Akan, Ozgur, Editorial Board Member, Bellavista, Paolo, Editorial Board Member, Cao, Jiannong, Editorial Board Member, Coulson, Geoffrey, Editorial Board Member, Dressler, Falko, Editorial Board Member, Ferrari, Domenico, Editorial Board Member, Gerla, Mario, Editorial Board Member, Kobayashi, Hisashi, Editorial Board Member, Palazzo, Sergio, Editorial Board Member, Sahni, Sartaj, Editorial Board Member, Shen, Xuemin (Sherman), Editorial Board Member, Stan, Mircea, Editorial Board Member, Jia, Xiaohua, Editorial Board Member, Zomaya, Albert Y., Editorial Board Member, Li, Bo, editor, Li, Changle, editor, Yang, Mao, editor, Yan, Zhongjiang, editor, and Zheng, Jie, editor

Published
2021
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