检索结果-内蒙古大学图书馆

arXiv 2021年

作者： Jin, Yu Zhang, Jiayi Huang, Chongwen Yang, Liang Xiao, Huahua Ai, Bo Wang, Zhiqin The School of Electronic and Information Engineering Beijing Jiaotong University Beijing100044 China The Frontiers Science Center for Smart High-speed Railway System Beijing Jiaotong University Beijing100044 China Zhejiang Provincial Key Lab of Information Processing Communication and Networking Zhejiang University Hangzhou310007 China College of Computer Science and Electronic Engineering Hunan University Changsha410082 China ZTE Corporation State Key Laboratory of Mobile Network Mobile Multimedia Technology Shenzhen518057 China State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University Beijing100044 China Henan Joint International Research Laboratory of Intelligent Networking and Data Analysis Zhengzhou University Zhengzhou450001 China Research Center of Networks and Communications Peng Cheng Laboratory Shenzhen518055 China China Academy of Information and Communications Technology Beijing100191 China

Reconfigurable intelligent surface (RIS) constitutes an essential and promising paradigm that relies programmable wireless environment and provides capability for space-intensive communications, due to the use of low-cost massive reflecting elements over the entire surfaces of man-made structures. However, accurate channel estimation is a fundamental technical prerequisite to achieve the huge performance gains from RIS. By leveraging the low rank structure of RIS channels, three practical residual neural networks, named convolutional blind denoising network, convolutional denoising generative adversarial networks and multiple residual dense network, are proposed to obtain accurate channel state information, which can reflect the impact of different methods on the estimation performance. Simulation results reveal the evolution direction of these three methods and reveal their superior performance compared with existing benchmark schemes. Copyright © 2021, The Authors. All rights reserved.

关键词： Channel estimation

来源：评论

学校读者我要写书评

暂无评论

Piezoelectric thermoelastic dissipation research of piezoelectric harvester under different vibration 2

Piezoelectric thermoelastic dissipation research of piezoele...

引用

2nd International Conference on Electronic Information technology and Computer engineering, EITCE 2018

作者： Liu, Yuting Deng, Jiahao Ye, Yong Hou, Zhuo Duan, Zuodong Xu, Sha School of Mechatronical Engineering Beijing Institute of Technology Beijing100081 China Science and Technology on Electromechanical Dynamic Control Laboratory Beijing Institute of Technology Beijing100081 China College of Information Engineering Shenzhen University Shenzhen518060 China National Key Laboratory of Electronic Measurement Technology North University of China Taiyuan030051 China

Piezoelectric materials are widely used to form piezoelectric energy harvesters. Also, the thermoelastic dissipation always influences the energy harvesting efficiency, during the energy harvest process. Therefore, in this paper, we discuss the effect of thermoelastic dissipation on the piezoelectric harvester through numerical calculation, simulation and experiment. The piezoelectric thermoelastic coupling governing equations under different vibration are derived, which are based on the Euler-Bernoulli beam theory, thermal conduction model and piezoelectric field model. Then, the structure frequency shift and thermoelastic damping are studied via numerical calculation and simulation. Meanwhile, we show the influence of the temperature field on the piezoelectric structure under different vibration modes. Furth more, we research the variations of piezoelectric structure thermoelastic dissipation characteristics under different structure geometry sizes. Based on these analyses, the effect of piezoelectric thermoelastic dissipation on the piezoelectric harvester is researched © The Authors, published by EDP Sciences, 2018.

关键词： Energy harvesting

来源：评论

学校读者我要写书评

暂无评论

Transparency effect based on hybridization interaction in individual metamaterial resonator

Transparency effect based on hybridization interaction in in...

引用

2018 IEEE MTT-S International Wireless Symposium, IWS 2018

作者： Zhu, Lei Guo, Jing Dong, Liang Wu, TianHao Meng, FanYi Wu, Qun Communication and Electronics Engineering Institute Qiqihar University Qiqihar161006 China College of Information and Communication Engineering Harbin Engineering University Harbin150001 China Science and Technology on Electronic Test and Measurement Laboratory North University of China Taiyuan030051 China School of Electronic Engineering Beijing University of Posts and Telecommunications Beijing100876 China Electronics and Information Institute Harbin Institute of Technology Harbin150001 China

ISBN: (纸本)9781538663462

In this paper, we demonstrate that the transparency effect based on the hybridization interaction can be achieved in individual three-gap split ring resonator (SRR). When the symmetry of the SRR metamaterial is broken, a pronounced transparency window appears in transmission spectrum. The resonance nature of the transparency effect is analyzed by employing the plasmonic hybridization. Numerical simulations also validate the strong dispersion property and the slow light property of the plasmonic metamaterial, which results in our plasmonic metamaterial that can be exploited to design terahertz slow light devices. © 2018 IEEE.

关键词： Transparency

来源：评论

学校读者我要写书评

暂无评论

Generation and storage of spin squeezing via learning-assisted optimal control

arXiv

引用

arXiv 2020年

作者： Tan, Qing-Shou Zhang, Mao Chen, Yu Liao, Jie-Qiao Liu, Jing Key Laboratory of Hunan Province on Information Photonics and Freespace Optical Communication College of Physics and Electronics Hunan Institute of Science and Technology Yueyang414000 China MOE Key Laboratory of Fundamental Physical Quantities Measurement Hubei Key Laboratory of Gravitation and Quantum Physics PGMF and School of Physics Huazhong University of Science and Technology Wuhan430074 China Tencent Lightspeed & Quantum Studios Shenzhen China Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education Key Laboratory for Matter Microstructure and Function of Hunan Province Department of Physics Synergetic Innovation Center for Quantum Effects and Applications Hunan Normal University Changsha410081 China

The generation and storage of spin squeezing is an attractive topic in quantum metrology and the foundations of quantum mechanics. The major models to realize the spin squeezing are the one- and two-axis twisting models. Here, we consider a collective spin system coupled to a bosonic field, and show that proper constant-value controls in this model can simulate the dynamical behavior of these two models. More interestingly, a better performance of squeezing can be obtained when the control is time-varying, which is generated via a reinforcement learning algorithm. However, this advantage becomes limited if the collective noise is involved. To deal with it, we propose a four-step strategy for the construction of a new type of combined controls, which include both constant-value and time-varying controls, but performed at different time intervals. Compared to the full time-varying controls, the combined controls not only give a comparable minimum value of the squeezing parameter over time, but also provides a better lifetime and larger full amount of squeezing. Moreover, the amplitude form of a combined control is simpler and more stable than the full time-varying control. Therefore, our scheme is very promising to be applied in practice to improve the generation and storage performance of squeezing. © 2020, CC BY-NC-SA.

关键词： Reinforcement learning

来源：评论

学校读者我要写书评

暂无评论

Design of Trajectory Planning System for River Crab Farming with Automatic Feeding Boat

引用

Journal of Physics: Conference Series 2020年第1期1575卷

作者： Xiaoyu Wang Jianqing Hong Yueping Sun Dean Zhao School of Electrical and Information Engineering Jiangsu University Zhenjiang 212013 China School of Modern Equipment Manufacturing Zhenjiang College Zhenjiang 212028 China School Key Laboratory of Facility Agriculture Measurement and Control Technology and Equipment of Machinery Industry Jiangsu University Zhenjiang 212013 China

The bait feeding of river crab farming needs to be covered evenly on the whole pond. At present, feeding is mainly carried out by manual driving or remote control ship-borne feeding machine on the pond. The feeding accuracy and efficiency are relatively low, and it is difficult to guarantee feeding effect. In view of the above situation, based on the mobile automatic feeding boat equipped with GPS, this paper proposes a complete coverage trajectory planning method with irregular quadrilateral pond, and a trajectory planning system based on SuperMap Objects is designed to generate reciprocating traverse feeding trajectory automatically. The simulation is performed to verify the feasibility of the trajectory planning method. The results show that the trajectory planning system can meet the requirements of automatic and uniform feeding on the crab pond.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Regional path moving horizon tracking controller design for autonomous ground vehicles

引用

Science China(Information Sciences) 2017年第1期60卷 201-207页

作者： Hongyan GUO Feng LIU Ru YU Zhenping SUN Hong CHEN State Key Laboratory of Automotive Simulation and Control Jilin University(Campus Nanling) College of Communication Engineering Jilin University (Campus Nanling) School of Mechatronic Engineering and Automation National University of Defense Technology

A novel regional path tracking description is presented in this manuscript, and the moving horizon control method that is model predictive control(MPC) is proposed to discuss the regional path tracking issue which could avoid colliding road boundary when tracking a more complex road effectively. The feasible region for autonomous ground vehicles(AGVs) running is determined first according to the detected road ***, in order to keep the actual trajectory of AGVs in the region and satisfy the safety requirements, MPC method is employed to design the path tracking controller considering actuator and road boundary *** order to verify the effectiveness of the proposed method, experiments based on Hongqi AGV HQ430 are carried out, and the results illustrate that the presented method could be successfully applied to Hongqi AGV vehicle HQ 430.

关键词： autonomous ground vehicles regional path tracking model predictive control road boundaries experimental validation

来源：评论

学校读者我要写书评

暂无评论

Initial ASEAN digital security and interoperability standard proposal

引用

AIP Conference Proceedings 2023年第1期2739卷

作者： Sangsuree Vasupongayya Gunawan Hutagalung Obrina Candra Chalee Vorakulpipat Doni Purnomo Parinda Wattanasri Eko Supriyanto Shukor Abd Razak Othman Ibrahim Anazida Zainal Sri Devi Ravana Hiep Cong Pham Tharith Sriv Daw Khin Myo Su Mora Hertanto Agus Winarno Prabaswari Raden Muhammad Taufik Yuniantoro Badrus Zaman Fatmawati Retna Apsari Yutika Amelia Effendi Norjihan Abdul Ghani Zarina Shukur Hamidah Ibrahim Nur Izura Udzir Marnel Peradilla Jude Michael Teves Nestor Michael Tiglao Cenon Alfonso Pg Emeroylariffion Abas Mueen Uddin Agustin Kusumayati Brian Sri Prahastuti Department of Computer Engineering Faculty of Engineering Prince of Songkla University Hatyai Songkhla 90110 THAILAND Directorate General of Post and Information Technology Ministry of Communication and Information Technology Jakarta INDONESIA Politeknik Siber dan Sandi Negara National Cyber & Crypto Agency (BSSN) Depok West Java INDONESIA Information Security Research Team at National Electronics and Computer Technology Center Bangkok THAILAND National Standardization Agency of Indonesia Jakarta INDONESIA Department of Disease Control Ministry of Public Health Mueang Nonthaburi Nonthaburi THAILAND School of Biomedical Engineering and Health Sciences Faculty of Engineering Universiti Teknologi Malaysia Johor Bahru Johor MALAYSIA IJN-UTM Cardiovascular Engineering Center Institute of Human Centered Engineering Universiti Teknologi Malaysia Johor Bahru Johor MALAYSIA School of Computing Faculty of Engineering Universiti Teknologi Malaysia Johor Bahru Johor MALAYSIA Faculty of Computer Science & Information Technology Universiti Malaya Kuala Lumpur MALAYSIA RMIT University Vietnam Ho Chi Minh City VIETNAM Royal University of Phnom Penh Phnom Penh CAMBODIA Yangon University of Economics Yangon MYANMAR Agency for the Assessment and Application of Technology (BPPT) Jakarta INDONESIA Faculty of Science and Technology Universitas Airlangga Surabaya East Java INDONESIA Faculty of Advanced Technology and Multidiscipline Universitas Airlangga Surabaya East Java INDONESIA Centre for Cyber Security Universiti Kebangsaan Malaysia Bangi Selangor MALAYSIA Faculty of Computer Science and Information Technology Universiti Putra Malaysia Serdang Selangor MALAYSIA Computer Technology Department College of Computer Studies De La Salle University Manila PHILIPPINES Software Technology Department College of Computer Studies De La Salle University Manila PHILIPPINES Electrical and Electronics Engineering Institute University of the Philippines Diliman Quezon City P

In this work, the result of the initial attempt to propose an Association of Southeast Asian Nations (ASEAN) digital security and interoperability standard to support the mobility among ASEAN countries is presented. Literature reviews on existing coronavirus disease 2019 (COVID-19) related digital technologies of six ASEAN member countries are conducted. Several concerns related to creating/implementing the ASEAN digital security and interoperability standard are discussed including the technology accessing concern, the data security and privacy concern, and the data interoperability and availability concern. The proposed solution toward creating an ASEAN digital security and interoperability standard is then presented. To evaluate the proposed solution, a survey has been conducted on representatives of nine ASEAN countries on four main issues including the security standards and requirements, the interoperability standard and requirements, the certifications, and the implementation challenges. According to the survey and the discussion, seven recommendations were proposed toward creating an ASEAN digital security and interoperability standard. First, each country collects and maintains the data of its own citizens and also provides a method to authenticate and access the data by authorized requests. Second, QR code standard or ASEAN QR code standard must be agreed upon so that it can be authenticated and verified by ASEAN countries. Third, health risk assessment must be agreed upon to be used. Forth, the security standard, the data, the data format and the exchange protocol must be agreed upon at the ASEAN policy level while adoption of international standards as an implementation guideline will ease of the process and neutralize different requirements from various countries. Fifth, any accountability of incidents must be agreed upon at the ASEAN policy level. Sixth, certification might be extended to certification of risk assessment for organizations, products or

关键词：

来源：评论

学校读者我要写书评

暂无评论

High-resolution noise source focusing localization based on combination array in dock environment

引用

Harbin Gongcheng Daxue Xuebao/Journal of Harbin engineering University 2018年第7期39卷 1191-1197页

作者： Yu, Shuhua Shi, Shengguo Shi, Jie Han, Chuang College of Underwater Acoustic Engineering Harbin Engineering University Harbin150001 China Southwest China Institute of Electronic Technology Chengdu610036 China Acoustic Science and Technology Laboratory Harbin Engineering University Harbin150001 China School of Measurement and Communication Harbin University of Science and Technology Harbin150080 China

The localization of a noise source is influenced by the multipath effect in a wharf test;hence, a high-resolution noise source localization method based on a combination array is proposed for measurement in a environment. This method applies an array form that provides a vector sensor in an even sound pressure array. Multipath information is utilized to generate a space-focusing wave beam matching actual wharf channel sound propagation properties. In combination with the passive time reversal technology, a sharper focusing peak and a more powerful background constraint ability are obtained. Meanwhile, the worst performance optimization is introduced to reduce the performance decline of the high-resolution focusing positioning method caused by various mismatch errors. The simulation and water-tank experiment results show that the method can realize a high-resolution focusing positioning of a noise source in a complex sound field environment of wharf. In addition, the robustness is excellent. © 2018, Editorial Department of Journal of HEU. All right reserved.

关键词： Focusing

来源：评论

学校读者我要写书评

暂无评论

A New Chaotic Plant with Torso-Like Rest Points

A New Chaotic Plant with Torso-Like Rest Points

引用

2018 International Conference on Circuits and Systems in Digital Enterprise technology, ICCSDET 2018

作者： Vaidyanathan, Sundarapandian Godwin, R. Krishna Priya Godwin Anand, P.S. Sambas, Aceng School of Electrical and Communication Engineering Vel Tech University Chennai T.N.600 062 India Instrumentation and Control Engineering National University of Science and Technology Oman Department of Interdisciplinary Engineering Saintgits College of Engineering Kottayam Kerala686 532 India Department of Mechanical Engineering Universitas Muhammadiyah Tasikmalaya Tasikmalaya46196 Indonesia

ISBN: (纸本)9781538605769

A new dynamical system exhibiting chaos and a torso-like set of rest points is reported in this research work. In more detail, the rest points of the new chaotic nonlinear plant are a pair of open curves of rest points that are symmetric about the coordinate axes. Qualitative dynamical properties shedding more light on the dynamical texture of the system are displayed with phase plots. The new chaotic plant displays hidden attractor as it features infinite number of rest points. Using integral sliding mode control, we have also discussed the regulation of the states of the new nonlinear plant to set-point controls. © 2018 IEEE.

关键词： Chaotic systems

来源：评论

学校读者我要写书评

暂无评论

Humidity Error Compensating of MEMS Gyros Based on A daptive Threshold Denoising and RBF Neural Network

Humidity Error Compensating of MEMS Gyros Based on A daptive...

引用

第37届中国控制会议

作者： Wang Xin-wang Shen Xiao-lin Cao Hui-liang Deng Bo-wen School of Electrical and Control Engineering North University of China IEEE Science and Technology on Electronic Test & Measurement Laboratory North University of China School of Information and Communication Engineering North University of China

The large random errors in a typical MEMS gyros under the ranges of relative humidity *** order to solve the large random error under the ranges of relative humidity,a method based on adaptive threshold denoising and neural net work is proposed in this *** relative humidity experiment is carried to test LSM6DS3 MEMS *** the adaptive threshold denoising is used to separate the drift error and drift data modeled with RBF neural *** experimental res ults show the effectiveness of the method,and it is of great significance in improving the performance of MEMS gyros.

关键词： MEMS gyroscopes relative humidity adaptive threshold function random error model error compensations radial basis function neural network

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：