检索结果-内蒙古大学图书馆

23rd COTA International Conference of transportation Professionals: Emerging Data-Driven Sustainable Technological Innovation in transportation, CICTP 2023

作者： Wang, Yong Xie, Junqing Zhang, Jingtao Li, Shu Zhang, Miao Fan, Kai Advanced Institute of Information Technology Peking Univ. Hangzhou China Hangzhou Innovation Institute Beihang Univ. Hangzhou China Center of National Railway Intelligent Transportation System Engineering and Technology Beijing China Communication Research Institute China Academy of Railway Sciences Corp. Ltd. Beijing China

ISBN: (数字)9780784485040

ISBN: (纸本)9780784485040

The development of a scalable and adaptable trackside and on-board coordinated control system (CCS+) is a top priority for the digital and automated train operations of future railways. One of the most important and reliable solutions in CCS+ is train positioning, which is called GLAT (generic location-awareness tools). The underlying technologies that GLAT can rely on many methods like GNSS. However, the GNSS precise positioning of trains in "satellite signal blind spots" such as tunnels and mountainous areas must rely on trackside equipment such as balise. For alleviating the need of trackside equipment, one way is using INS/GNSS integrated navigation scheme. However, with the development of computer vision, it is an attractive and challenging way. Therefore, we carry out the visual train positioning research in the China National Railway Test center (east suburban branch). By using ORB descriptor and monocular camera, we successfully obtain the trajectory tracking of the train. We study the relationship between the number of feature points, feature tracking, and train speed in our experiments, and find that the impact of tunnels on feature tracking is vital. Through further analysis, we draw two import conclusions. © ASCE.

关键词： Global positioning system

来源：评论

学校读者我要写书评

暂无评论

Simultaneous enhancement of sensitivity, resonant frequency, and overload capability of piezoresistive accelerometers by heavily-doped fillet structures on sensing beams

引用

IEEE Sensors Journal 2025年第11期25卷 19138-19146页

作者： Xia, Yong Wang, Tao Lv, Yang Han, Xiangguang Yu, Mingzhi Tan, Renjie Huang, Mimi Jia, Chen Zhao, Libo Sun, Lin Yang, Ping Lu, Dejiang Xi'an Jiaotong University School of Mechanical Engineering State Key Laboratory for Manufacturing Systems Engineering International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technologies Xi'an710049 China Ningbo CRRC Times Transducer Technology Co. LTD Department of Basic Research and Development Ningbo315021 China Research Institute for Intelligent Sensing Technology and System School of Instrument Science and Technology State Key Laboratory for Manufacturing Systems Engineering State Industry-Education Integration Center for Medical Innovations International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technologies Xi'an Jiaotong University Xi'an710049 China Shandong Laboratory of Advanced Materials and green Manufacturing at Yantai Yantai264000 China

High sensitivity, high natural frequency, and high overload capability are desired for accelerometers used in industrial applications, but simultaneously enhancing all is challenging. Here, via designing novel heavily-doped fillet structures, we prove the sensitivity, resonant frequency, and overload capability can be simultaneously enhanced. The enhancements are attributed to regulations of stress concentration and effective sensing regions by the heavily-doped fillets. The sensors with and without fillets are designed, fabricated, packaged, and tested. The results show a sensitivity of 0.31±0.02 mV/g@5V, a natural frequency of 37.87±2.09 kHz, and an overload of 10040.17±531.76 g for sensors with 10-μm fillets, which are superior to 0.27±0.01 mV/g@5V, 34.13±0.90 kHz, and 7368.55±843.92 g for those no-fillet counterparts. Additionally, the developed sensor further exhibited feasibility in air-bearing vibration monitoring. The proposed design is envisioned to give insights into the novel designs of high-performance stress-based sensors, including accelerometers, pressure sensors, and strain gauges. © 2001-2012 IEEE.

关键词： Strain gages

来源：评论

学校读者我要写书评

暂无评论

Publisher Correction: Mapping the protein binding site of the (pro)renin receptor using in silico 3D structural analysis (2022,10.1038/s41440-022-01094-w)

引用

HYPERTENSION research 2023年第4期46卷 1067-1068页

作者： Ebihara, Akio Sugihara, Daiki Matsuyama, Makoto Suzuki-Nakagawa, Chiharu Nabi, A. H. M. Nurun Nakagawa, Tsutomu Nishiyama, Akira Suzuki, Fumiaki Faculty of Applied Biological Sciences Gifu University Tokai National Higher Education and Research System 1-1 Yanagido Gifu 501-1193 Japan Center for Highly Advanced Integration of Nano and Life Sciences (G-CHAIN) Gifu University Tokai National Higher Education and Research System 1-1 Yanagido Gifu 501-1193 Japan Preemptive Food Research Center (PFRC) Gifu University Institute for Advanced Study 1-1 Yanagido Gifu 501-1193 Japan Department of Chemical Engineering Indian Institute of Technology Guwahati Guwahati Assam 781039 India Graduate School of Natural Science and Technology Gifu University Tokai National Higher Education and Research System 1-1 Yanagido Gifu 501-1193 Japan Division of Molecular Genetics Shigei Medical Research Institute Okayama Minami 701-0202 Japan Laboratory of Population Genetics Department of Biochemistry and Molecular Biology University of Dhaka Dhaka 1000 Bangladesh Department of Pharmacology Faculty of Medicine Kagawa University Miki Kagawa 761-0793 Japan

来源：评论

学校读者我要写书评

暂无评论

Virtually coupled train set control subject to space-time separation:A distributed economic MPC approach with emergency braking configuration

引用

High-Speed Railway 2024年第3期2卷 143-152页

作者： Xiaolin Luo Tao Tang Le Wang Hongjie Liu State Key Laboratory of Advanced Rail Autonomous Operation Beijing Jiaotong UniversityBeijing 100044China Department of Electrical and Computer Engineering University of CaliforniaRiversideCA 92521USA Beijing Zongheng Electro-Mechanical Technology Development Co. Ltd.Beijing 100081China School of Automation and Intelligence Beijing Jiaotong UniversityBeijing 100044China National Engineering Research Center of Rail Transportation Operation and Control System Beijing Jiaotong UniversityBeijing 100044China

The emerging virtual coupling technology aims to operate multiple train units in a Virtually Coupled Train Set(VCTS)at a minimal but safe *** guarantee collision avoidance,the safety distance should be calculated using the state-of-the-art space-time separation principle that separates the Emergency Braking(EB)trajectories of two successive units during the whole EB *** this case,the minimal safety distance is usually numerically calculated without an analytic ***,the constrained VCTS control problem is hard to address with space-time separation,which is still a gap in the existing *** solve this problem,we propose a Distributed Economic Model Predictive Control(DEMPC)approach with computation efficiency and theoretical ***,to alleviate the computation burden,we transform implicit safety constraints into explicitly linear ones,such that the optimal control problem in DEMPC is a quadratic programming problem that can be solved *** theoretical analysis,sufficient conditions are derived to guarantee the recursive feasibility and stability of DEMPC,employing compatibility constraints,tube techniques and terminal ingredient ***,we extend our approach with globally optimal and distributed online EB configuration methods to shorten the minimal distance among ***,experimental results demonstrate the performance and advantages of the proposed approaches.

关键词： Virtually coupled train set Space-time separation Economic model predictive control Distributed model predictive control Emergency braking configuration

来源：评论

学校读者我要写书评

暂无评论

Multi-Layer RIS on Edge: Communication, Computation and Wireless Power Transfer

引用

IEEE Internet of Things Magazine 2025年第3期8卷 100-108页

作者： Chen, Shuyi Jia, Junhong Zhang, Baoqing Hui, Yingzhe Qin, Yifan Meng, Weixiao Xu, Tianheng Harbin Institute of Technology Communication Research Center China-Chile ICT Belt and Road Joint Laboratory China Beijing Institute of Electronic System Engineering China Harbin Engineering University Ministry of Education Key Lab of In-fiber Integrated Optics China Shanghai Advanced Research Institute Chinese Academy of Sciences China

The rapid expansion of Internet of Things (IoT) and its integration into various applications high-light the need for advanced communication, computation, and energy transfer techniques. However, the traditional hardware-based evolution of communication systems faces challenges due to exces-sive power consumption and prohibitive hardware cost. With the rapid advancement of reconfigu-rable intelligent surface (RIS), a new approach by parallel stacking a series of RIS, i.e., multi-lay-er RIS, has been proposed. Benefiting from the characteristics of scalability, passivity, low cost, and enhanced computation capability, multi-layer RIS is a promising technology for future massive IoT scenarios. Thus, this article proposes a multi-layer RIS-based universal paradigm at the network edge, enabling three functions, i.e., multiple-input multi-ple-output (MIMO) communication, computation, and wireless power transfer (WPT). Starting by pic-turing the possible applications of multi-layer RIS, we explore the potential signal transmission links, energy transmission links, and computation pro-cesses in IoT scenarios, showing its ability to handle on-edge IoT tasks and associated green challeng-es. Then, these three key functions are analyzed respectively in detail, showing the advantages of the proposed scheme, compared with the traditional hardware-based scheme. To facilitate the implementation of this new paradigm into reality, we list the dominant future research directions at last, such as inter-layer channel modeling, resource allocation and scheduling, channel estimation, and edge training. It is anticipated that multi-layer RIS will contribute to more energy-efficient wireless networks in the future by introducing a revolution-ary paradigm shift to an all-wave-based approach. © 2018 IEEE.

关键词： Energy transfer

来源：评论

学校读者我要写书评

暂无评论

Real-Time Traffic Management of High-Speed Trains: A Novel Approach Combining Optimization with Machine Learning

Real-Time Traffic Management of High-Speed Trains: A Novel A...

引用

Chinese Automation Congress (CAC)

作者： Chong Li Jiateng Yin Lin Ma Tao Tang State Key Laboratory of Advanced Rail Autonomous Operation Beijing Jiaotong University Beijing China National Engineering Research Center of Rail Transportation Operation and Control System Beijing Jiaotong University Beijing China

ISBN: (数字)9798350368604

ISBN: (纸本)9798350368611

The real-time traffic control of high-speed trains (HSTs) is an important task in railway networks to reduce the delay time of trains in case of unexpected disruptions. Traditional approaches are based on mixed-integer programming (MILP) formulations to be solved by optimization methods such as branch-and-bound (B&B), which however require a very long time in real-world problems. Our study introduces a novel methodology that employs machine learning (ML) techniques to accelerate the optimization of MILPs. Specifically, our approach develops a feedforward network, which can be trained off-line, to predict the optimal MILP parameter configurations for the control of HSTs. Additionally, we develop a differential evolution (DE) algorithm, which fine-tunes these parameters in response to dynamic conditions. We conduct numerical experiments based on the real-world data of Beijing-Zhangjiakou high-speed railway (BZHR). The results demonstrate that our ML-accelerated approach significantly outperforms traditional optimization methods, improving the solution performance by 21.47%.

关键词： Heuristic algorithms Microscopy Optimization methods Machine learning Traffic control Programming Feature extraction Prediction algorithms Real-time systems Rail transportation

来源：评论

学校读者我要写书评

暂无评论

Modeling of self-pressurization process with low flow supply of carbon dioxide

引用

Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) 2025年第4期56卷 1628-1638页

作者： Xiong, Yu Lu, Zhaijun Gan, Ning School of Transportation Engineering Central South University Changsha410075 China Center of Advanced Scientific Research on Extreme Fluid Power Central South University Changsha410075 China Key Laboratory of Traffic Safety on the Track of Ministry of Education Central South University Changsha410075 China

To study the self-pressurization process with low flow supply of carbon dioxide, a new non-thermal equilibrium self-pressurization mathematical model based on the quality to characterize gasification rate of liquid-phase carbon dioxide was proposed. The carbon dioxide self-pressurization supply test platform was established, and three tests with different initial conditions for low flow supply of carbon dioxide were conducted. The results of the mathematical model calculations were compared with the experimental results. The effects of initial temperature(from 278.15 K to 308.15 K) and filling density (800 kg/m3 to 1000 kg/m3) on the effective supply rate of liquid-phase carbon were studied. The results indicate that the mathematical model calculations of pressure and temperature are in good agreement with the experimental results, validating the accuracy of the model. In the modeling process, the heat exchange between the storage tank and carbon dioxide should be considered, while the heat flux between liquid-phase and gas-phase carbon dioxide is relatively small and can be neglected in the modeling. Higher initial temperature of carbon dioxide and lower filling density can result in higher gasification mass during the carbon dioxide supply process, reducing the effective supply rate. © 2025 Central South University. All rights reserved.

关键词： carbon dioxide low flow supply quality self-pressurization

来源：评论

学校读者我要写书评

暂无评论

Modified Hough Transform Based Registration Method for Heavy-haul Railway Rail Profile with Intensive Environmental Noise

引用

IEEE Transactions on Instrumentation and Measurement 2025年 74卷

作者： An, Yuntong Cao, Yuan Sun, Yongkui Su, Shuai Wang, Feng Beijing Jiaotong University National Engineering Research Center of Rail Transportation Operation Control System School of Automation and Intelligent Beijing100044 China Beijing Jiaotong University Frontiers Science Center for Smart High-speed Railway System Beijing100044 China Beijing Jiaotong University State Key Laboratory of Advanced Rail Autonomous Operation Beijing100044 China

In heavy-haul railway inspections, accurate rail profile registration is essential for assessing wear and deformation of tracks. In this process, identifying the rail waist arc as key segments and determining the center of the arc as feature points are crucial steps for rough rail profile registration, often affected by noise from sensors, surface contaminants, and environmental factors. To address these challenges, a profile registration method is proposed, with the Modified Hough Transform (MHT) as a core component. The method first segments key profile sections using curvature thresholds to identify arc segments. For each point in these segments, MHT constructs circles with fixed radius and calculates their intersection points. A distance matrix based on Euclidean distances between intersection points is generated. By sorting and normalizing these distances, the method identifies local density variations and calculates density coefficients to find the circle center, without manual thresholding. Comparative experiments on simulated and field data show that the proposed method achieves high accuracy and robustness in noisy environments. The dual validation confirms its reliability, making this method effective for rail profile registration in heavy-haul railway inspections. © 1963-2012 IEEE.

关键词： Hough transforms

来源：评论

学校读者我要写书评

暂无评论

High-Performance Spiro Bifluoren-Based Charge Generation Layer for the Efficient and Thermal-Stability Organic Light-Emitting Diodes

SSRN

引用

SSRN 2025年

作者： Xu, Yachen Zhou, Qi Li, Chunya Wu, Ranghui Shi, Wei Lin, Yang Lan, Weixia Wei, Bin School of Mechatronic Engineering and Automation Shanghai University Shanghai200444 China Shanghai Engineering Research Center for Integrated Circuits and Advanced Display Materials Shanghai University Shanghai200072 China Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai University Shanghai200072 China

We have designed and synthesized 2-(9,9'-spirobi[fluoren]-2-yl)-1,10-phenanthroline (SBFPA) and investigated its optoelectrical and thermal characteristics to apply it as a charge generation layer (CGL). The SBFPA-engaged CGL in tandem organic light-emitting diodes (OLEDs) could efficiently generate and balance the injection of carriers. The current efficiency of the tandem red phosphorous OLED reached 31.2 cd/A at a luminance of 10,000 cd/m², which is 2.7 times that of the single OLED (11.6 cd/A). The decomposition temperature of SBFPA was as high as 342 ℃, which guaranteed the thermal stability of the tandem OLED. Moreover, the T95 lifetime (time to 95% of the initial luminance) of the tandem OLED reached 229 h. The charge generation ability of CGL was confirmed through a p-i-n-CGL-structured OLED, where CGL was inserted between the electron injection layer and the cathode to work as the source of electron generation. The maximum power efficiency of the OLED increased 30.9% to 10.46 lm/W, and the maximum luminescence enhanced 41.5% to 23925 cd/m2 compared to the OLED without CGL. The results highlight the promising application of the developed CGL in tandem OLED, offering new possibilities for development of reliable electronics. © 2025, The Authors. All rights reserved.

关键词： Organic light emitting diodes (OLED)

来源：评论

学校读者我要写书评

暂无评论

Double Side Interfacial Optimization for Low-Temperature Stable CsPbI_(2)Br Perovskite Solar Cells with High Efficiency Beyond 16%

引用

Energy & Environmental Materials 2022年第2期5卷 637-644页

作者： Jing Ma Jie Su Zhenhua Lin Jian He Long Zhou Tao Li Jincheng Zhang Shengzhong Liu Jingjing Chang Yue Hao State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology Shaanxi Joint Key Laboratory of GrapheneSchool of MicroelectronicsXidian UniversityXi’an 710071China Advanced Interdisciplinary Research Center for Flexible Electronics Xidian UniversityXi’an 710071China Centre for Spintronics and Quantum System State Key Laboratory for Mechanical Behavior of MaterialsSchool of Materials Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China Key Laboratory of Applied Surface and Colloid Chemistry National Ministry of Education Shaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710119China

CsPbI_(2)Br perovskite solar cells have achieved rapid development owing to their exceptional optoelectronic properties and relatively outstanding ***,open-circuit voltage(Voc)loss caused by band mismatch and charge recombination between perovskite and charge transporting layer is one of the crucial obstacles to further improve the device ***,we proposed a bilayer electron transport layer ZnO(bottom)/SnO_(2)(top)to reduce the Voc loss(Eloss)and promote device Voc by ZnO insert layer thickness modulation,which could improve the efficiency of charge carrier extraction/transfer and suppress the charge carrier *** addition,guanidinium iodide top surface treatment is used to further reduce the trap density,stabilize the perovskite film and align the energy levels,which promotes the fill factor,short-circuit current density(Jsc),and stability of the *** a result,the champion cell of double-side optimized CsPbI_(2)Br perovskite solar cells exhibits an extraordinary efficiency of 16.25%with the best Voc as high as 1.27 V and excellent thermal and storage stability.

关键词： CsPbI_(2)Br dual interfacial optimization high performance low temperature perovskite solar cells

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：