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IEEE International Conference on Information Communication and Signal Processing (ICICSP)

作者： Zhang Jiafeng Peng Xiaodong Zhao Mengyuan Xu Peng Wu Pengzhan Gao Chen Ma Xiaoshan Key Laboratory of Electronics and Information Technology for Space System National Space Science Center Chinese Academy of Sciences Beijing China Institute of Mechanics Chinese Academy of Sciences Beijing China Institute of Engineering Thermophysics Chinese Academy of Sciences Beijing China

Simulating the detection process of a space-based gravitational wave (GW) measurement system is crucial for the task demonstration, design, operation and data processing. Gaps and glitches, which are common types of abnormal events in the detection process, are an important part of data simulation. This paper explores two gap models and three glitch models, provides a comprehensive overview of these models. The implementation of these models in Taiji Data, the simulation data of the Taiji program, is designed. Dedicated software modules were developed to incorporate the gap and glitch models into the simulation process. The impact of adding gap and glitch to the measurement is illustrated and analyzed. Finally, the time-series simulation detection data of space GWs that integrates gap and glitch models has been obtained, providing support for promoting the improvement of the detection data processing capabilities.

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Erratum to: The formation mechanism of aqueous hydrogen peroxide in a plasma-liquid system with liquid as the anode

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The European Physical Journal D 2020年第7期74卷 1-2页

作者： Lin, Jiao He, Xinyi Chen, Qiang Xiong, Qing Li, Junshuai Wang, Xin Chen, Guolong Liu, Qing Huo Ostrikov, Kostya (Ken) Institute of Electromagnetics and Acoustics Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance Department of Electronic Science Xiamen University Xiamen P.R. China State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University Chongqing P.R. China Key Laboratory of Special Function Materials & Structure Design of the Ministry of Education School of Physical Science & Technology Lanzhou University Lanzhou P.R. China Department of Electrical and Computer Engineering Duke University Durham USA Institute for Future Environments and School of Chemistry Physics and Mechanical Engineering Queensland University of Technology Brisbane Australia CSIRO-QUT Joint Sustainable Processes and Devices Laboratory Commonwealth Scientific and Industrial Research Organization Lindfield Australia

We find that we made a mistake in the estimation of the H2O2 concentration by the colorimetric method in our previous paper (J. Lin et al., Eur. Phys. J. D (2020) 74: 80) [1].

关键词： Atomic and Molecular Collisions

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HeROS: A simulation platform for heterogeneous robotic swarms

HeROS: A simulation platform for heterogeneous robotic swarm...

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第三十八届中国控制会议

作者： Shuai Li Yuanfang Wan Pengzhou He Chen Wang Jinan Sun Yanling Zhang Xuyang Li Guangming Xie The State Key Laboratory of Turbulence and Complex Systems Intelligent Biomimetic Design Lab College of Engineering Peking University School of Automation and Electrical Engineering University of Science and Technology Beijing National Engineering Research Center for Software Engineering Peking University Xi'an Bibang Intelligent Technology Co. Ltd.

This paper presents HeROS, which is a novel simulation platform for heterogeneous robotic swarms. Compared with some existing simulation platforms, our HeROS(Heterogeneous Robotic Swarms Simulation) platform is more efficient due to its special designed communication methods and framework. Besides, it's convenient for use since we provide many kinds of control functions with free API's. It also supports many external libraries, which can be used to develop different simulation tasks. Using our developed platform, a mission of target search and tracking is realized as a case study, where a UAV-UGV heterogeneous system consisting of a UAV and two UGVs is required to search for a ground target and then move close to *** implementation of the task successfully shows the effectiveness and performance of the HeROS platform.

关键词： Heterogeneous robotic swarms simulation platform UAV UGV cooperation

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An Efficient Digital Twin Based on Machine Learning Svd Autoencoder and Generalised Latent Assimilation for Nuclear reactor Physics

SSRN

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SSRN 2022年

作者： Gong, Helin Cheng, Sibo Chen, Zhang Li, Qing Quilodrán-Casas, César Xiao, Dunhui Arcucci, Rossella SJTU-ParisTech Elite Institute of Technology Shanghai 200240 China Data Science Institute Imperial College London LondonSW7 2AZ United Kingdom Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of China Chengdu610041 China Faculty of Sciences and Engineering Swansea University SwanseaSA1 8EN United Kingdom Department of Earth Science & Engineering Imperial College London LondonSW7 2AZ United Kingdom

This paper proposes an approach that combines reduced-order models with machine learning in order to create an digital twin to predict the power distribution over the core during the operation stage. The operational digital twin is designed to solve forward problems given input operation parameters, as well as to solve inverse problems given some observations of the power field. The forward model is realised using SVD autoencoder reduced order model and machine learning methods. The inverse model is based on a generalised latent assimilation method. The effectiveness in the sense of accuracy and real-time solver of the digital twin is illustrated through a real engineering problem in nuclear reactor physics - reactor core simulation in the life cycle of HPR1000 affected by control rod inserting step, burnup, power level and inlet temperature of the coolant, which shows potential applications for on-line monitoring purpose. © 2022, The Authors. All rights reserved.

关键词： Inverse problems

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Converting a two-dimensional ferromagnetic insulator into a high-temperature quantum anomalous Hall system by means of an appropriate surface modification

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Physical Review B 2019年第16期99卷 165410-165410页

作者： Huisheng Zhang Wei Qin Mingxing Chen Ping Cui Zhenyu Zhang Xiaohong Xu Key Laboratory of Magnetic Molecules and Magnetic Information Materials of the Ministry of Education Research Institute of Materials Science and College of Physics and Electronic Information Shanxi Normal University Linfen 041004 China International Center for Quantum Design of Functional Materials (ICQD) Hefei National Laboratory for Physical Sciences at Microscale (HFNL) and Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of China Hefei Anhui 230026 China School of Physics and Electronics Hunan Normal University Changsha Hunan 410081 China Key Laboratory of Strongly-Coupled Quantum Matter Physics Chinese Academy of Sciences School of Physical Sciences University of Science and Technology of China Hefei Anhui 230026 China

The recent discoveries of two-dimensional (2D) ferromagnetic insulators Cr2Ge2Te6 and CrI3 [Gong et al., Nature (London) 546, 265 (2017); Huang et al., Nature (London) 546, 270 (2017).] offer unprecedented opportunities for exploration of exotic new quantum phenomena. Here we use first-principles approaches to carry out a comparative study of the 2D heterostructures of germanene/Cr2Ge2Te6 and germanene/CrI3, resulting in a predictive design of a highly appealing high-temperature quantum anomalous Hall effect (QAHE) system. We show that germanene-passivated Cr2Ge2Te6 becomes topologically nontrivial, and can harbor the QAHE at ∼30 K; in contrast, germanene-passivated CrI3 becomes a topologically trivial ferromagnetic metal. We rationalize these results based on the different interfacial couplings in the two systems, much stronger for the former because of effective Ge-Ge and Ge-Te bondings. We further show that both silicene/Cr2Ge2Te6 and Cr2Ge2Te6/Ge(111) can also harbor QAHEs, offering broader opportunities for potential experimental realization of a high-temperature QAHE.

关键词： Edge states Ferromagnetism Quantum anomalous Hall effect Ultrathin films First-principles calculations

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Task oriented adaptive HUD human reliability analysis

Task oriented adaptive HUD human reliability analysis

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IEEE International Conference on High Performance Computing and Communications (HPCC)

作者： Liu Sichen Zhou Lei Liu Liwen Majian Key Laboratory of Avionics System Integrated Technology China Aviation Radio Electronics Research Institute Shanghai China College of Communication and Art Design University of Shanghai for Science and Technology Shanghai China School of Mechanical Engineering Southeast University Jiangning District Nanjing China Ministry of Education Engineering Research Center of New Light Sources Technology and Equipment Southeast University Jiangning District Nanjing China

In this paper, the human factors reliability of standard HUD and adaptive HUD is evaluated by comprehensively using behavioral indicators and physiological indicators. A 3-factor multi-level hybrid experiment (HUD mode mission environment repetition times) was used to explore the load difference and performance difference between adaptive HUD and traditional HUD in different flight stages and different flight duration during flight. The results show that compared with the traditional HUD, the adaptive HUD system can significantly reduce the mental load of pilots in the takeoff and approach landing phases, and in the case of long-term flight, the adaptive HUD system will not cause additional burden to the subjects. keywords: HUD, human reliability, ET, ECG, EEG

关键词： Adaptive systems Smart cities Human factors Electrocardiography Physiology Electroencephalography Behavioral sciences

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An iterative method for the solution of equilibrium position in the shaft-hole assembly based on spring contact model

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Procedia CIRP 2021年 97卷 230-234页

作者： Yuanyang Zhang Junkang Guo Xianming Gao Jun Hong School of Mechanical Engineering Xi'an Jiaotong University Xi'an Shaanxi 710049 P R China Key Laboratory for Modern Design & Rotor-Bearing System Ministry of Education Xi'an Jiaotong University Xi'an Shaanxi 710049 P R China College of Mechanical and Electrical Engineering Shaanxi University of Science and Technology Xi'an 710021 China

The traditional finite element method has the advantages of strong versatility and high calculation accuracy. Thus it is widely applied in various numerical simulation problems. Although the traditional finite element method for solving the shaft-hole assembly problem can obtain better solution accuracy, the process of modeling and calculation take a long time and thus cannot meet the engineering application requirements when the equilibrium position after the assembly needs to be obtained quickly to guide the subsequent process. In this paper, an iterative method based on the spring contact model is proposed. Firstly, the actual form error of the shaft and hole is characterized by the Fourier series expansion method; Then, in the contact surface, we established a discrete spring contact model and obtained the equivalent stiffness of the coupling spring through the discrete solid model. The balance iterative calculation based on the form errors and contact deformation force can finally determine the equilibrium position after the assembly. Compared with the calculation results of the finite element model, the equilibrium position of the shaft-hole assembly can be quickly solved under the condition of sacrificing certain precision. From this aspect it can be estimated that this method has a good potential for engineering application.

关键词： Assembly design Form error Spring contact model Finite element method

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3D Modeling and Finite-Element Full-wave Simulation of TSV for Stack up SIP Integration Applications

3D Modeling and Finite-Element Full-wave Simulation of TSV f...

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2010 11th International Conference on Electronic Packaging technology & High Density Packaging(2010 电子封装技术与高密度封装国际会议)

作者： Lei Liang Min Miao Zhensong Li Bo Han Xin Sun Yufeng Jin Information Microsystem Institute Beijing Information Science and Technology University.No.35 Nort System & Standard Department Datang Mobile Communications Equipment Co. Ltd.No.29 Xueyuan Road H National Key Laboratory of Micro/Nano Fabrication Technology Peking University＃ 5 Yiheyuan Rd Ha

The modeling and simulation of via's effect on the data transferring or high frequency signal path and device performance have been one of the major concerns in the designing and testing of multilayered electric interconnects in applications like highly integrated system-in-package (SIP)[1] and high-speed circuitry design[2]. The authors of this paper explore the 3D full-wave modeling of through Si vias (TSV) in multilayered SIP and simulate their effects on spectral performance and signal integrity with the help of finite element methodologies. The emphasis of the research is on the revealing of 3D electromagnetic field distribution on fundamental single and differential TSV interlayer interconnects, so that more detailed parasitic effects may be found and equivalent model closer to the reality can be obtained, compared with the methodology based on purely circuit analysis. And the effect of the variations in the TSV diameter and height and the effect of grounded TSV are revealed. Additionally, S21 performance and field distribution of two sort of paired vias are displayed. Waveports are adopted for the full-wave modeling and all the cases are in 0～10GHz range.

关键词： Through-silicon vias Integrated circuit modeling Solid modeling Three dimensional displays Finite element methods Couplings Circuit simulation

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Digital-Based Inverse design for Ultra-Compact Power Splitter on LNOI

Digital-Based Inverse Design for Ultra-Compact Power Splitte...

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Asia Communications and Photonics Conference and Exhibition (ACP)

作者： Lingjun Zhou Hansi Ma Xiaomin Nie Yunchen Li Zhixue He Lei Wang Ke Li Fan Zhang Peng Cheng Laboratory Shenzhen China School of Electronic and Computer Engineering Peking University Shenzhen China Center of Material Science National University of Defense Technology Changsha China State Key Laboratory of Advanced Optical Communication System and Networks School of Electronics Peking University Beijing China

We propose and experimentally demonstrate an ultra-compact and efficient power splitter on LNOI. The device is realized through the inverse design of a digital meta-structure and occupies a small footprint of only 4.8×4.8μm 2 . The measured results show that the insertion losses are below 2.5dB across the wavelength band of 1500–1560 nm, and the power imbalance between the two output ports is within 0.3 dB.

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Attention-Guided Multi-scale Interaction Network for Face Super-Resolution

arXiv

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arXiv 2024年

作者： Wan, Xujie Li, Wenjie Gao, Guangwei Lu, Huimin Yang, Jian Lin, Chia-Wen The Institute of Advanced Technology Nanjing University of Posts and Telecommunications Nanjing210046 China Key Laboratory of Artificial Intelligence Ministry of Education Shanghai200240 China The Provincial Key Laboratory for Computer Information Processing Technology Soochow University Suzhou215006 China The Pattern Recognition and Intelligent System Laboratory School of Artificial Intelligence Beijing University of Posts and Telecommunications Beijing100080 China The School of Automation Southeast University Nanjing210096 China The School of Computer Science and Technology Nanjing University of Science and Technology Nanjing210094 China The Department of Electrical Engineering National Tsing Hua University Hsinchu30013 Taiwan

Recently, CNN and Transformer hybrid networks demonstrated excellent performance in face super-resolution (FSR) tasks. Since numerous features at different scales in hybrid networks, how to fuse these multi-scale features and promote their complementarity is crucial for enhancing FSR. However, existing hybrid network-based FSR methods ignore this, only simply combining the Transformer and CNN. To address this issue, we propose an attention-guided Multi-scale interaction network (AMINet), which contains local and global feature interactions as well as encoder-decoder phases feature interactions. Specifically, we propose a Local and Global Feature Interaction Module (LGFI) to promote fusions of global features and different receptive fields' local features extracted by our Residual Depth Feature Extraction Module (RDFE). Additionally, we propose a Selective Kernel Attention Fusion Module (SKAF) to adaptively select fusions of different features within LGFI and encoder-decoder phases. Our above design allows the free flow of multi-scale features from within modules and between encoder and decoder, which can promote the complementarity of different scale features to enhance FSR. Comprehensive experiments confirm that our method consistently performs well with less computational consumption and faster inference. Copyright © 2024, The Authors. All rights reserved.

关键词： Decoding

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