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20th Chinese National Conference on Computational Linguistics, CCL 2021

作者： San, Maocuo Cai, Zhi-Jie Dao, Jizhaxi College of Computer Science and Technology Qinghai Normal University Qinghai Xining810016 China Key Laboratory of Tibetan Informati on Processing Ministry of Education Qinghai Xining810008 China Tibetan Information Processing and Machine Translation Key Laboratory of Qinghai Province Qinghai Xining810008 China School of Computer Science and Technology Southwest Minzu University Sichuan Chengdu610041 China The State Key Laboratory of Tibetan Intelligent Information Processing and Application Qinghai Xining810008 China

Text proofreading evaluation set is the basis of spelling research, including traditional text proofreading evaluation set and standard text proofreading evaluation set. The traditional text proofreading evaluation set is a kind of evaluation set obtained by artificial forgery of the correct data set through subjective experience. It is a common text proofreading evaluation method, but it also has many defects. Standard text proofreading evaluation set is an evaluation set obtained by selecting research objects to obtain reliable real data sets. Based on the analysis of the construction methods of English and Chinese text proofreading evaluation set, combined with the characteristics of Tibetan, this paper studies the construction methods of Tibetan text proofreading evaluation set, constructs a standard text proofreading evaluation set for evaluating the performance of Tibetan text proofreading, and analyzes the error types and distribution in the evaluation set, so as to verify the effectiveness of the standard text proofreading evaluation set constructed in this paper Availability and usability. © 2021 China National Conference on Computational Linguistics Published under Creative Commons Attribution 4.0 International License

关键词： Natural language processing systems

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Design and Analysis of Robust Resilient Diffusion over Multi-Task Networks Against Byzantine Attacks

arXiv

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arXiv 2022年

作者： Yu, Tao de Lamare, Rodrigo C. Yu, Yi The School of Electrical Engineering and Information Southwest Petroleum University Chengdu610500 China The Centre for Telecommunications Studies Pontifical Catholic University of Rio de Janeiro Rio de Janeiro22451-900 Brazil The Department of Electronic Engineering University of York YorkYO10 5DD United Kingdom The School of Information Engineering Robot Technology Used for Special Environment Key Laboratory of Sichuan Province Southwest University of Science and Technology Mianyang621010 China

This paper studies distributed diffusion adaptation over clustered multi-task networks in the presence of impulsive interferences and Byzantine attacks. We develop a robust resilient diffusion least mean Geman-McClure-estimation (RDLMG) algorithm based on the cost function used by the Geman-McClure estimator, which can reduce the sensitivity to large outliers and make the algorithm robust under impulsive interferences. Moreover, the mean sub-sequence reduced method, in which each node discards the extreme value information of cost contributions received from its neighbors, can make the network resilient against Byzantine attacks. In this regard, the proposed RDLMG algorithm ensures that all normal nodes converge to their ideal states with cooperation among nodes. A statistical analysis of the RDLMG algorithm is also carried out in terms of mean and mean-square performances. Numerical results evaluate the proposed RDLMG algorithm in applications to multi-target localization and multi-task spectrum sensing. Copyright © 2022, The Authors. All rights reserved.

关键词： Diffusion

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Design and Analysis of a Spherical robot with Two Degrees of Freedom Swing

Design and Analysis of a Spherical Robot with Two Degrees of...

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Chinese Control and Decision Conference, CCDC

作者： Maotao Yang Tianping Tao Jianwen Huo Konstantin A. Neusypin Zikun Zhang Hua Zhang Mingming Guo Robot Technology Used for Special Environment Key Laboratory of Sichuan Province Southwest University of Science and Technology Mianyang China Bauman Moscow State Technical University Moscow Russia

ISBN: (数字)9781728158556

ISBN: (纸本)9781728158563

Aiming at the problem that the mechanical structure of the ordinary pendulum spherical robot is improperly designed to cause a certain degree of freedom to swing the range, this paper proposes a two-degree-of-freedom spherical robot XK-I with a swing around the X and Y axes. The design concept, mechanical principle and rolling and rotating motion characteristics of the XK-I robot are introduced. According to the characteristics of XK-I robot motion, the dynamic model of linear motion is established by Lagrangian equation and simulated. According to the kinetic model, the XK-I robot steering is implemented by controlling the number of steps of the stepping motor by the pulse signal, so that the XK-I robot can move in any direction. The linear and steering tests of the XK-I robot were carried out through real experiments to verify the feasibility of the design.

关键词： robot kinematics Mathematical model Dynamics Mobile robots Turning Kinetic energy

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Design and Analysis of Joint-Assisted Exoskeleton Control System of Upper Limb in Active Spacesuit

Design and Analysis of Joint-Assisted Exoskeleton Control Sy...

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第三十九届中国控制会议

作者： Zhaoyang Li Yuehong Dai Jiejun Hu Junyao Wang Peng Tang University of Electronic Science and Technology of China Research Center of Intelligent Aircraft System Technology and Application of UESTC Aircraft Swarm Intelligent Sensing and Cooperative Control Key Laboratory of Sichuan Province

Based on joint-assisted exoskeleton technology, a concept of active spacesuit for future extraterrestrial exploration activities is presented. Firstly, we design the mechanical structure of joint-assisted exoskeleton of upper limb, and perform kinematic analysis on the upper limb to obtain the joint motion information when lifting load. We obtain the resistance torque of the spacesuit joint by the measuring equipment, and the total torque of the upper limb by the simplified two-links dynamic ***, we present the combination of adaptive impedance control and sliding mode control that based on CTC method. Finally, the prototype of joint-assisted exoskeleton robot of upper limb is fabricated and tested, and the experimental results indict that the control system can improve the trajectory tracking effect and eliminate the influences of environmental change. The research can not only help the astronauts more easily complete the task of collecting samples of the future manned space missions, but also provide a theoretical foundation for the subsequent research of active spacesuit.

关键词： Active Spacesuit Exoskeleton Adaptive Impedance Control Upper Limb Extraterrestrial Exploration

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Active noise control techniques for nonlinear systems

arXiv

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arXiv 2021年

作者： Lu, Lu Yin, Kai-Li de Lamare, Rodrigo C. Zheng, Zongsheng Yu, Yi Yang, Xiaomin Chen, Badong School of Electronics and Information Engineering Sichuan University Sichuan Chengdu610065 China School of Computer Science Sichuan University Sichuan Chengdu610065 China CETUC PUC-Rio Rio de Janeiro22451-900 Brazil School of Electrical Engineering Sichuan University Chengdu610065 China School of Information Engineering Robot Technology Used for Special Environment Key Laboratory of Sichuan Province Southwest University of Science and Technology Mianyang621010 China School of Electronic and Information Engineering Xi'an Jiaotong University Xi'An710049 China

Most of the literature focuses on the development of the linear active noise control (ANC) techniques. However, ANC systems might have to deal with some nonlinear components and the performance of linear ANC techniques may degrade in this scenario. To overcome this limitation, nonlinear ANC (NLANC) algorithms were developed. In Part II, we review the development of NLANC algorithms during the last decade. The contributions of heuristic ANC algorithms are outlined. Moreover, we emphasize recent advances of NLANC algorithms, such as spline ANC algorithms, kernel adaptive filters, and nonlinear distributed ANC algorithms. Then, we present recent applications of ANC technique including linear and nonlinear perspectives. Future research challenges regarding ANC techniques are also discussed. Copyright © 2021, The Authors. All rights reserved.

关键词： Neural networks

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A survey on active noise control techniques–Part I: Linear systems

arXiv

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arXiv 2021年

Active noise control (ANC) is an effective way for reducing the noise level in electroacoustic or electromechanical systems. Since its first introduction in 1936, this approach has been greatly developed. This paper focuses on discussing the development of ANC techniques over the past decade. Linear ANC algorithms, including the celebrated filtered-x least-mean-square (FxLMS)based algorithms and distributed ANC algorithms, are investigated and evaluated. Nonlinear ANC (NLANC) techniques, such as functional link artificial neural network (FLANN)-based algorithms, are pursued in Part II. Furthermore, some novel methods and applications of ANC emerging in the past decade are summarized. Finally, future research challenges regarding the ANC technique are discussed. Copyright © 2021, The Authors. All rights reserved.

关键词： Adaptive filtering

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A joint call for actions to advance taxonomy in China

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Zoological Systematics 2022年第3期47卷 188-197页

作者： Chaodong Zhu Arong Luo Ming Bai Michael COrr Zhonge Hou Siqin Ge Jun Chen Yibo Hu Xuming Zhou Gexia Qiao Hongzhi Kong Limin Lu Xiaohua Jin Lei Cai Xinli Wei Ruilin Zhao Wei Miao Qingfeng Wang Zhongli Sha Qiang Lin Meng Qu Jianping Jiang Jiatang Li Jing Che Xuelong Jiang Xiaoyong Chen Lianming Gao Zongxin Ren Chunlei Xiang Shixiao Luo Donghui Wu Dong Liu Yanqiong Peng Tao Su Chenyang Cai Tianqi Zhu Wanzhi Cai Xingyue Liu Hu Li Huaijun Xue Zhen Ye Xuexin Chen Pu Tang Shujun Wei Hong Pang Qiang Xie Feng Zhang Feng Zhang Xianjin Peng Aibing Zhang Taiping Gao Changfa Zhou Chen Shao Libin Ma Zhaoming Wei Yunxia Luan Ziwei Yin Wu Dai Cong Wei Xiaolei Huang Jingxian Liu Xiangsheng Chen Tianci Yi Zhisheng Zhang Zhulidezi Aishan Qin Li Hongying Hu CAS Key Laboratory of Zoological Systematics and Evolution Institute of ZoologyChinese Academy of SciencesBeijing 100101China CAS Key Laboratory of Animal Ecology and Conservation Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China State Key Laboratory of Systematic and Evolutionary Botany Institute of BotanyChinese Academy of SciencesBeijing 100093China State Key Laboratory of Mycology(SKLM) Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China CAS Key Laboratory of Aquatic Biodiversity and Conservation Institute of HydrobiologyChinese Academy of SciencesWuhan 430072China Wuhan Botanical Garden Chinese Academy of SciencesWuhan 430074China Department of Marine Organism Taxonomy&Phylogeny Institute of OceanologyChinese Academy of SciencesQingdao 266071China CAS Key Laboratory of Tropical Marine Bio-resources and Ecology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization&Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province Chengdu Institute of BiologyChinese Academy of SciencesChengdu 610041China State Key Laboratory of Genetic Resources and Evolution&Yunnan Key Laboratory of Biodiversity and Ecological Security of Gaoligong Mountain Kunming Institute of ZoologyChinese Academy of SciencesKunming 650221China CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China CAS Key Laboratory of Plant Resource Conservation and Sustainable Utilization South China Botanical GardenChinese Academy of SciencesGuangzhou 510650China CAS Key Laboratory of Wetland Ecology and Environment Northeast Institute of Geography and AgroecologyChinese Academy of SciencesChangchun 130102China CAS Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMenglunMenglaYunnan 66630

Taxonomy plays an important role in understanding the origin, evolution, and ecological functionality of biodiversity. There are large number of unknown species yet to be described by taxonomists, which together with their ecosystem services cannot be effectively protected prior to description. Despite this, taxonomy has been increasingly underrated insufficient funds and permanent positions to retain young talents. Further, the impact factordriven evaluation systems in China exacerbate this downward trend, so alternative evaluation metrics are urgently necessary. When the current generation of outstanding taxonomists retires,there will be too few remaining taxonomists left to train the next generation. In light of these challenges, all co-authors worked together on this paper to analyze the current situation of taxonomy and put out a joint call for immediate actions to advance taxonomy in China.

关键词： Endangered taxonomists morphology-based taxonomy integrative taxonomy capacity building systematics

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Corrigendum to "Cell surface GRP78-directed CAR-T cells are effective at treating human pancreatic cancer in preclinical models" [Translational Oncology volume 39 (2024) 101803]

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Translational oncology 2025年 52卷 102252页

作者： Yuncang Yuan Jiawei Fan Dandan Liang Shijie Wang Xu Luo Yongjie Zhu Nan Liu Tingxiu Xiang Xudong Zhao Laboratory of Animal Tumor Models Frontiers Science Center for Disease-Related Molecular Network National Clinical Research Center for Geriatrics West China Hospital Sichuan University Chengdu 610041 Sichuan China. Development and Application of Human Major Disease Monkey Model Key Laboratory of Sichuan Province Sichuan Hengshu Bio-Technology Co. Ltd. Yibin 644600 China. Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment Chongqing University Cancer Hospital Chongqing 400030 China. Laboratory of Animal Tumor Models Frontiers Science Center for Disease-Related Molecular Network National Clinical Research Center for Geriatrics West China Hospital Sichuan University Chengdu 610041 Sichuan China. Electronic address: zhaoxudong@***.

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NbC Nanoparticles Decorated Carbon Nanofibers as Highly Active and Robust Heterostructural Electrocatalysts for Ammonia Synthesis

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Angewandte Chemie 2024年第30期136卷

作者： Zhihao Zhang Aihui Niu Yaxin Lv Dr. Haoran Guo Prof. Jun Song Chen Prof. Qian Liu Kai Dong Prof. Xuping Sun Prof. Tingshuai Li School of Materials and Energy University of Electronic Science and Technology of China Chengdu 611731 Sichuan China Department of Chemistry Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education Key Laboratory for Green Organic Synthesis and Application of Hunan Province Xiangtan University Xiangtan 411105 Hunan China Institute for Advanced Study Chengdu University Chengdu 610106 Sichuan China College of Chemistry Chemical Engineering and Materials Science Shandong Normal University Jinan 250014 Shandong China

Transition-metal carbides with metallic properties have been extensively used as electrocatalysts due to their excellent conductivity and unique electronic structures. Herein, NbC nanoparticles decorated carbon nanofibers (NbC@CNFs) are proposed as an efficient and robust catalyst for electrochemical synthesis of ammonia from nitrate/nitrite reduction, which achieves a high Faradaic efficiency (FE) of 94.4 % and a large ammonia yield of 30.9 mg h −1 mg −1 cat. . In situ electrochemical tests reveal the nitrite reduction at the catalyst surface follows the *NO pathway and theoretical calculations reveal the formation of NbC@CNFs heterostructure significantly broadens density of states nearby the Fermi energy. Finite element simulations unveil that the current and electric field converge on the NbC nanoparticles along the fiber, suggesting the dispersed carbides are highly active for nitrite reduction.

关键词： ammonia synthesis transition metal carbide theoretical calculation finite element simulation

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Experimental Observation of Parity-Symmetry-Protected Phenomena in the Quantum Rabi Model with a Trapped Ion

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Physical Review Letters 2025年第19期134卷 193604-193604页

作者： Xingyu Zhao Qian Bin Waner Hou Yi Li Yue Li Yiheng Lin Xin-You Lü Jiangfeng Du CAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences University of Science and Technology of China Hefei 230026 China Anhui Province Key Laboratory of Scientific Instrument Development and Application University of Science and Technology of China Hefei 230026 China Hefei National Laboratory University of Science and Technology of China Hefei 230088 China College of Physics Sichuan University Chengdu 610065 China School of Physics and Institute for Quantum Science and Engineering Huazhong University of Science and Technology and Wuhan Institute of Quantum Technology Wuhan 430074 China Institute of Quantum Sensing and School of Physics Zhejiang University Hangzhou 310027 China

Symmetry is crucial for gaining insights into the fundamental properties of physical systems, bringing possibilities in studying exotic phenomena such as quantum phase transitions and ground-state entanglement. Here, we experimentally simulate a highly controllable extended quantum Rabi model, capable of tuning into the ultrastrong or deep coupling regime, in a spin-motion-coupled trapped ion. We observe that the phonon driven by such a model with Z2 symmetry preserved (broken) would experience double (single) excitation in the ultrastrong coupling regime. Quantum phenomena such as strong ground-state entanglement and quantum superposition in systems occur with parity symmetry, and these phenomena disappear following the symmetry breaking. We also find sensitive responses for the two-level system entropy and phonon Wigner function in the deep coupling regime, depending on the parameter across the symmetry transition point. This Letter offers the prospect of exploring symmetry-controlled quantum phenomena and their applications in high-precision quantum technologies.

关键词： Quantum entanglement

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