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1,488 results on '"Zhang, Wenqi"'

63. Characteristic Analysis of Emergency Collaboration Network for Public Crisis Events : Based on the Whole Network Data Analysis of the '7 · 20' Heavy Rain in Zhengzhou, Henan Province

Author

Zhang, Wenqi, Zheng, Qinyu, Striełkowski, Wadim, Editor-in-Chief, Black, Jessica M., Series Editor, Butterfield, Stephen A., Series Editor, Chang, Chi-Cheng, Series Editor, Cheng, Jiuqing, Series Editor, Dumanig, Francisco Perlas, Series Editor, Al-Mabuk, Radhi, Series Editor, Scheper-Hughes, Nancy, Series Editor, Urban, Mathias, Series Editor, Webb, Stephen, Series Editor, Hussain, Rosila Bee Binti Mohd, editor, Parc, Jimmyn, editor, and Li, Jia, editor

Published
2023
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64. Multi-modal Natural Man–Machine Interaction Technology and Its Application for Lunar Robot

Author

Chen, Meng, Zhang, Chongfeng, Qin, Xiaofei, Ma, Jia, Zhang, Wenqi, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Haddar, Mohamed, Editorial Board Member, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Xu, Jinyang, Editorial Board Member, and Liu, Xinjun, editor

Published
2023
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65. Employee Salary Competitiveness and Enterprise Innovation: The Moderating Role of Personnel Structure and Fintech

Author

Zhang, Wenqi, Appolloni, Andrea, Series Editor, Caracciolo, Francesco, Series Editor, Ding, Zhuoqi, Series Editor, Gogas, Periklis, Series Editor, Huang, Gordon, Series Editor, Nartea, Gilbert, Series Editor, Ngo, Thanh, Series Editor, Striełkowski, Wadim, Series Editor, Jiang, Yushi, editor, Li, Guangming, editor, and Li, Wilson Xinbao, editor

Published
2023
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66. Fault Diagnosis of Large-Scale Railway Maintenance Equipment Based on GA-RBF Neural Network

Author

Wang, Hairui, Li, Yuanbo, Zhang, Wenqi, Duan, Yusu, Zhu, Guifu, 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, Phan, Cong Vinh, editor, and Nguyen, Thanh Dung, editor

Published
2023
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67. UAV Autonomous Navigation Based on Multi-modal Perception: A Deep Hierarchical Reinforcement Learning Method

Author

Kou, Kai, Yang, Gang, Zhang, Wenqi, Wang, Chenyi, Yao, Yuan, Zhou, Xingshe, Filipe, Joaquim, Editorial Board Member, Ghosh, Ashish, Editorial Board Member, Prates, Raquel Oliveira, Editorial Board Member, Zhou, Lizhu, Editorial Board Member, Yu, Zhiwen, editor, Hei, Xinhong, editor, Li, Duanling, editor, Song, Xianhua, editor, and Lu, Zeguang, editor

Published
2023
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83. Unraveling the rapid ion migration in perovskite solar cells by circuit-switched transient photoelectric technique.

Author

Wu, Ziyou, Yuan, Shuai, Miao, Shaoshuai, Li, Yiyi, Zhang, Wenqi, Cao, Dandan, Nie, Junyu, Wang, Yi, Ai, Xi-Cheng, and Zhang, Jian-Ping

Abstract

Ion migration activated by illumination is a critical factor responsible for the performance decline and stability degradation of perovskite solar cells (PSCs). While ion migration has been widely believed to be much slower than charge transport, recent research suggests that, despite the lack of understanding of the mechanism, it may also be involved in a series of rapid photoelectric responses of PSCs. Here, we report an improved circuit-switched transient photoelectric technique with nanosecond temporal resolution, which enables quantitative characterization of ion migration dynamics in PSCs across a fairly broad time window. Specifically, ion migration occurring within microseconds after illumination (corresponding to a diffusion length of ∼10−7 cm) is unambiguously identified. In conjunction with the composition engineering protocol, we justify that it arises from the short-range migration of halide anions and organic cations around the contact/perovskite interface. The rapid ion migration kinetics revealed in this work strongly complement the well-established ion migration model, which offers new insights into the mechanism of ion-carrier interaction in PSC devices. [ABSTRACT FROM AUTHOR]

Published
2024
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84. Background Segmentation for Vehicle Re-Identification

Author

Wu, Mingjie, Zhang, Yongfei, Zhang, Tianyu, and Zhang, Wenqi

Subjects
Computer Science - Computer Vision and Pattern Recognition
Abstract

Vehicle re-identification (Re-ID) is very important in intelligent transportation and video surveillance.Prior works focus on extracting discriminative features from visual appearance of vehicles or using visual-spatio-temporal information.However, background interference in vehicle re-identification have not been explored.In the actual large-scale spatio-temporal scenes, the same vehicle usually appears in different backgrounds while different vehicles might appear in the same background, which will seriously affect the re-identification performance. To the best of our knowledge, this paper is the first to consider the background interference problem in vehicle re-identification. We construct a vehicle segmentation dataset and develop a vehicle Re-ID framework with a background interference removal (BIR) mechanism to improve the vehicle Re-ID performance as well as robustness against complex background in large-scale spatio-temporal scenes. Extensive experiments demonstrate the effectiveness of our proposed framework, with an average 9% gain on mAP over state-of-the-art vehicle Re-ID algorithms.

Published
2019

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