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Your search keyword '"Li, Dafei"' showing total 25 results
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25 results on '"Li, Dafei"'

1. Application of Computer Vision Technology in Collaborative Control of the 'Zhurong' Mars Rover

Author

Wang, Jia, Hu, Guolin, Li, Dafei, Wang, Saijin, Han, Shaojin, Li, Xin, Liu, Xiaohui, Cheng, Ziqing, Zhang, Hui, Huang, Zhao, He, Ximing, Wang, Xiaoxue, Filipe, Joaquim, Editorial Board Member, Ghosh, Ashish, Editorial Board Member, Prates, Raquel Oliveira, Editorial Board Member, Zhou, Lizhu, Editorial Board Member, Yongtian, Wang, editor, and Lifang, Wu, editor

Published
2023
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15. Z-Source-Converter-Based Power Conditioning System for Superconducting Magnetic Energy Storage System

Author

Liye Xiao, Chuang Zhao, Li Dafei, Wenyong Guo, and Cai Fuyu

Subjects
Computer science, 020208 electrical & electronic engineering, Magnetic storage, Topology (electrical circuits), 02 engineering and technology, Superconducting magnetic energy storage, AC power, Power (physics), law.invention, Duty cycle, law, 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Equivalent circuit, Electrical and Electronic Engineering, Power control
Abstract

Power conditioning system (PCS) is the crucial component of superconducting magnetic storage system (SMES), which determines its power control performance and ability. This paper investigates the feasibility of applying Z source converter (ZSC) as the PCS for SMES. A ZSC-based PCS (ZSC-PCS) for SMES is presented, parameter design methods are analyzed, and a novel minimum power losses control scheme is proposed. By dynamically regulating open zero vector duty ratio to its minimum required level, the ZSC-PCS can enlarge both active and reactive power capability of SMES with lowest power losses. The feasibility of the proposed approach is verified by the experimental results on a kVA scale prototype.

Published
2019

22. New findings in a retrospective study on the efficacy of precision sound therapy of 156 tinnitus: "Drift" of tinnitus sites.

Author

Xu, Piao, Lin, Qiongping, Li, Dafei, Yang, Jingya, Zhao, Haiyan, Zhang, Shanshan, and Tian, Guangyong

Subjects
SOUND therapy, TINNITUS, HEARING levels, LOUDNESS, AUDIOMETRY
Abstract

The purpose of this study was to explore the role of the newly emerging concept that involves "shifting" the tinnitus pitch and loudness in relation to the efficacy of precision sound therapy. In the case of children, the prevalence rate of tinnitus is difficult to estimate because even if children have tinnitus symptoms that are similar to those of adults, they may not be able to perceive them or to adequately express how they feel.5,6 Since the mechanisms of tinnitus are different, the related treatment should also vary in differently affected participants. The follow-up treatment should continue to retest the tinnitus matching including tinnitus frequency, tinnitus loudness. After treatment, the tinnitus intensity did not change, but the tinnitus frequency changed to the frequency that would make the tinnitus less unbearable, and the THI score decreased. [Extracted from the article]

Published
2021
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24. Biodiversity Risk and Opportunity Assessment in BAT Cooperative Tobacco-growing Areas

Author

XU, Long, WANG, Jingming, FENG, Kun, CAI, Yanfa, LI, Bin, YIN, Honghui, LI, Dafei, ZHOU, Lianchuan, MA, Ying, WANG, Gang, LIU, Pengcheng, LI, Runtao, ZHOU, Changhua, YANG, Ke, and CHEN, Jian

Subjects
Cooperative tobacco-growing area, BAT, Agribusiness, Biodiversity, Risk and opportunity assessment
Abstract

Using the method in Biodiversity Risk and Opportunity Assessment Handbook of British American Tobacco Biodiversity Partnership, we assess biodiversity risks and opportunities in BAT and China's cooperative tobacco-growing areas. The assessment results indicate that there are 8 risks and 1 opportunity. Action and monitoring plans have been made for medium and high risks as well as opportunity, to reduce impact on biodiversity.

Published
2016
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