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A Novel Millimeter-Wave Channel Measurement Platform for 6G Intelligent Railway Scenarios

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China Communications 2022年第11期19卷 60-73页

作者： Dan Fei Chen Chen peng Zheng Dongsheng Zhang Jingya Yang haoran Chen Bo Ai School of Electronic and Information Engineering Beijing Jiaotong UniversityBeijing 100044China State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong UniversityBeijing 100044China Collaborative Innovation Center of Railway Traffic Safety Beijing Jiaotong UniversityBeijing 100044China Frontiers Science Center for Smart High-speed Railway System Beijing Jiaotong UniversityBeijing 100044China Zhengzhou Railway Vocational and Technical College Zhengzhou 451460China peng Cheng Laboratory Shenzhen 518055China

This paper presented a novel millimeterwave channel measurement platform for the 6G intelligent *** platform used phased array antenna with 64 elements and can support instant bandwidth up to 1 *** with improved multi-tone sounding signals,the platform can enhance dynamic measurement capability in high-speed railway *** performed calibration works about frequency flatness,frequency offset and proved platform reliability with channel emulator based closed-loop *** also carried out field trials in high-speed railway carriage *** on measurement results,we extracted channel characteristic parameters of path loss,power delay profile and delay spread to further verify the field measurement performance of the platform.

关键词： 6G millimeter-wave channel measurement phased array antenna high-speed railway

Tumor type classification and candidate cancer-specific biomarkers discovery via semi-supervised learning

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Biophysics Reports 2023年第2期9卷 57-66页

作者： peng Chen Zhenlei Li Zhaolin Hong haoran Zheng Rong Zeng School of Computer Science and Technology University of Science and Technology of China Anhui Key Laboratory of Software Engineering in Computing and Communication University of Science and Technology of China 3. Department of Systems Biology University of Science and Technology of China 4. CAS Key Laboratory of Systems Biology Shanghai Institute of Biochemistry and Cell Biology Center for Excellence in Molecular Cell Science Chinese Academy of Sciences School of Life Science and Technology ShanghaiTech University

Identifying cancer-related differentially expressed genes provides significant information for diagnosing tumors, predicting prognoses, and effective treatments. Recently, deep learning methods have been used to perform gene differential expression analysis using microarray-based high-throughput gene profiling and have achieved good results. In this study, we proposed a new robust multiple-datasetsbased semi-supervised learning model, MSSL, to perform tumor type classification and candidate cancer-specific biomarkers discovery across multiple tumor types and multiple datasets, which addressed the following long-lasting obstacles:(1) the data volume of the existing single dataset is not enough to fully exert the advantages of deep learning;(2) a large number of datasets from different research institutions cannot be effectively used due to inconsistent internal variances and low quality;(3) relatively uncommon cancers have limited effects on deep learning methods. In our article, we applied MSSL to The Cancer Genome Atlas(TCGA) and the Gene Expression Comprehensive Database(GEO) pan-cancer normalized-level3 RNA-seq data and got 97.6% final classification accuracy, which had a significant performance leap compared with previous approaches. Finally, we got the ranking of the importance of the corresponding genes for each cancer type based on classification results and validated that the top genes selected in this way were biologically meaningful for corresponding tumors and some of them had been used as biomarkers, which showed the efficacy of our method.

关键词： Tumor type classification Cancer-specific biomarkers MSSL Deep learning

Ground settlement and tunnel response due to twin-curved shield tunnelling in soft ground with small clear distance

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第8期16卷 3122-3135页

作者： Yao Hu haoran Tang Yinggang Xu Huayang Lei peng Zeng Kai Yao Yabo Dong State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of TechnologyChengdu610059China Research Center of Tunneling and Underground Engineering of Ministry of Education Beijing Jiaotong UniversityBeijing100044China College of Environment and Civil Engineering Chengdu University of TechnologyChengdu610059China School of Civil Engineering Tianjin UniversityTianjin300350China School of Qilu Transportation Shandong UniversityJinan250002China Power China Sinohydro Bureau 7 Co. Ltd.Chengdu610213China

Twin curved tunnels are often encountered in shield tunnelling,where significant complexities in densely exploited underground space are *** this study,the ground settlement and tunnel deformation due to twin-curved shield tunnelling in soft ground were investigated using numerical simulation and field *** curvature radii of twin curved tunnels and subsequent effects of tunnel construction were considered to reveal the tunnelling effect on ground surface settlement and tunnel *** results show that the settlement trough yields one offset towards inside of curved shield *** location of settlement trough and maximum settlement were affected by curvature radius but except for the shape and width of settlement *** parallel twin-curved shield tunnelling could increase the offset of existing settlement trough and maximum ***,an empirical prediction of surface settlement trough due to twin-curved shield tunnelling with same tunnel diameters in soft clay was proposed,which was applicable to curvature radius less than 800 ***,a minimum radius of 600 m of curvature tunnel was proposed in terms of allowable convergence deformation of *** result could provide guidance on safety evaluation for twin curved shield tunnelling construction.

关键词： Shield tunnelling Curvature radius Ground settlement Tunnel deformation Numerical simulation

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孔隙率对YSZ涂层性能的影响

热喷涂技术 2023年第1期15卷 45-51,37页

作者：胡晓蕾郭丹刘建明卢晓亮彭浩然黄兆晖矿冶科技集团有限公司北京100160 北京市工业部件表面强化与修复工程技术研究中心北京102206 特种涂层材料与技术北京市重点实验室北京102206 北京飞机维修工程有限公司北京100621

本文采用高能等离子喷涂方法制备了孔隙率为14.03%~28.22%的多孔YSZ涂层,研究了喷涂工艺参数对涂层孔隙率以及涂层基本性能的影响。结果表明:随孔隙率的增加,涂层的硬度和结合强度整体呈现下降的趋势,孔隙率14.03%时硬度为92.4 HR15Y,... 详细信息

本文采用高能等离子喷涂方法制备了孔隙率为14.03%~28.22%的多孔YSZ涂层,研究了喷涂工艺参数对涂层孔隙率以及涂层基本性能的影响。结果表明:随孔隙率的增加,涂层的硬度和结合强度整体呈现下降的趋势,孔隙率14.03%时硬度为92.4 HR15Y,孔隙率26.04%时硬度降低到84.2 HR15Y,强度则由9.62 MPa降低到5.03MPa;涂层在1060℃下抗热震次数呈现先明显增加后降低的趋势,当孔隙率为26.04%时,涂层在464次水冷热震后保持完好,涂层抗热震性能最优。

关键词： YSZ涂层孔隙率硬度结合强度抗热震性

Analysis on the development status of intelligent and connected vehicle test site

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Intelligent and Converged Networks 2021年第4期2卷 320-333页

作者： peng Zhi Rui Zhao haoran Zhou Yanwu Zhou Nam Ling Qingguo Zhou School of Information and Engineering Lanzhou UniversityLanzhou 730000China Beijing Zuosi Information Consulting Co. Ltd.Beijing 100085China Department of Computer Science and Engineering Santa Clara UniversitySanta ClaraCA 95053USA

With the development of automobile intelligence and connectivity,Intelligent and Connected Vehicle(ICV)is an inevitable trend in the transformation and upgrading of the automotive *** maturity of any advanced technology is inseparable from a large number of test verifications,especially the research and application of automotive technology require a large number of reliable tests for evaluation and ***,the ICV Test Site(ICVTS)will become a key deployment *** this paper,we analyze the development status of ICVTS outside and within China,summarize the shortcomings of the existing test sites,and put forward some targeted suggestions,in an effort to guide the development and construction of ICVTS towards the path that seems to be most promising.

关键词： Intelligent and Connected Vehicle(ICV) automatic driving Internet of Vehicles(IoV) test site

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钛合金固相渗硼-稀土渗硼机理研究

热喷涂技术 2020年第4期12卷 37-44页

作者：许贞元原慷张思源彭浩然张鑫周恒衣晓红矿冶科技集团有限公司北京100160 北京市工业部件表面强化与修复工程技术研究中心北京102206 北矿新材科技有限公司北京102206

表面强化处理可以大幅提升钛合金的耐磨性,也有利于钛合金在高温环境中应用。钛合金高温固相渗硼是重要的表面强化方式,添加稀土提高渗硼效率是重要技术手段。为深入研究稀土的渗硼催化机制,本文开展了900~1050℃渗硼试验,重点分析了渗... 详细信息

表面强化处理可以大幅提升钛合金的耐磨性,也有利于钛合金在高温环境中应用。钛合金高温固相渗硼是重要的表面强化方式,添加稀土提高渗硼效率是重要技术手段。为深入研究稀土的渗硼催化机制,本文开展了900~1050℃渗硼试验,重点分析了渗硼剂在试验后的相组成变化。结果表明,稀土可通过与硼源、氧发生化学反应,生成熔点较低的稀土硼酸盐。本文对该硼酸盐发挥的作用进行了解释,论述了稀土在渗硼反应过程中的作用。经过渗硼的钛合金表面形成了TiB/TiB2双相渗层,显微组织分析表明该渗层与基材结合紧密、无孔洞缺陷。本文还对渗硼钛合金的拉伸性能、表面摩擦系数、维氏硬度、高温洛氏硬度、结合力等基础力学性能进行了测试,结果表明,渗硼钛合金具有优良的综合力学性能。

关键词：钛合金固相渗硼稀土催化力学性能

High ammonia sensitive ability of novel Cu12Sb4S13 quantum dots@reduced graphene oxide nanosheet composites at room temperature

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Chinese Chemical Letters 2020年第8期31卷 2109-2114页

作者： Yueli Liu Binghua Sang haoran Wang Zijing Wu Yuxuan Wang Ziwei Wang Zhuoyin peng Wen Chen State Key Laboratory of Silicate Materials for Architectures School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China The Key Laboratory of Efficient&Clean Energy Utilization School of Energy and Power EngineeringChangsha University of Science and TechnologyChangsha 410111China

In the work,rGO nanosheet is synthesized using the typical Hummer’s method,then Cu12Sb4 S13 quantum dots@rGO composites are prepared by solvent thermal method,and Cu12Sb4 S13 quantum dots with the average size of 5 nm are densely distributed on the surface of rGO ***3 gas response of Cu12Sb4 S13quantum dots@rGO nanosheet composites at room te mperature of 25℃is enhanced compared with the pure Cu12Sb4 S13 quantum dots and rGO nanosheet,and the composites possess an excellent stability during the humidity range of 45%-80%with a low detection limit of 1 ppm,which is related with the intrinsic hydrophobicity characteristic of Cu12Sb4 S13 quantum *** also proves that Cu12Sb4 S13quantum dots@rGO nanosheet composites have a quite high selectivity towards ammonia compared with ethanol,methanol,acetone,toluene,hydrogen sulfide and nitrogen dioxide at room *** gas sensing mechanism of the composites is discussed primarily.

关键词： Cu12Sb4S13 quantum dots@rGO nanosheet Composites NH3 Room temperature Gas response

Spatiotemporal characteristics of water exchange between the Andaman Sea and the Bay of Bengal

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Acta Oceanologica Sinica 2024年第5期43卷 1-15页

作者： Yihao Wang Feng Zhou Xueming Zhu Ruijie Ye Yingyu peng Zhentao Hu haoran Tian Na Li Ocean College Zhejiang UniversityZhoushan 316021China State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Observation and Research Station of Yangtze River Delta Marine Ecosystems Ministry of Natural ResourcesZhoushan 316022China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519080China School of Oceanography Shanghai Jiao Tong UniversityShanghai 200240China School of Marine Sciences Sun Yat-sen UniversityZhuhai 519080China

A high-resolution customized numerical model is used to analyze the water transport in the three major water passages between the Andaman Sea(AS)and the Bay of Bengal,i.e.,the Preparis Channel(PC),the Ten Degree Channel(TDC),and the Great Channel(GC),based on the daily averaged simulation results ranging from 2010 to *** analysis and Empirical Orthogonal Function(EOF)methods are employed to investigate the spatiotemporal variability of the water exchange and controlling *** results of model simulation indicate that the net average transports of the PC and GC,as well as their linear trend,are opposite to that of the *** indicates that the PC and the GC are the main inflow channels of the AS,while the TDC is the main outflow channel of the *** transport variability is most pronounced at surface levels and between 100 m and 200 m depth,likely affected by monsoons and circulation.A 182.4-d semiannual variability is consistently seen in all three channels,which is also evident in their second principal *** on sea level anomalies and EOF analysis results,this is primarily due to equatorial winds during the monsoon transition period,causing eastward movement of Kelvin waves along the AS coast,thereby affecting the spatiotemporal characteristics of the flow in the *** first EOF of the PC flow field section shows a split at 100 m deep,likely due to *** first EOF of the TDC flow field section is steady but has potent seasonal oscillations in its time ***,the first EOF of the GC flow field section indicates a stable surface inflow,probably influenced by the equatorial Indian Ocean’s eastward current.

关键词： Andaman Sea water exchange Regional Ocean Modeling Systems(ROMS) Kelvin waves spatiotemporal characteristics

Two-dimensional complementary gate-programmable PN junctions for reconfigurable rectifier circuit

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Nano Research 2023年第1期16卷 1252-1258页

作者： Zhe Sheng Yue Wang Wennan Hu haoran Sun Jianguo Dong Rui Yu David Wei Zhang peng Zhou Zengxing Zhang State Key Laboratory of ASIC and System School of MicroelectronicsFudan UniversityShanghai 200433China National Integrated Circuit Innovation Center Shanghai 201203China

The unique features of ambipolar two-dimensional materials open up a great opportunity to build gate-programmable devices for reconfigurable circuit applications,e.g.,PN junctions for rectifier ***,current-reported rectifier circuits usually consist of one gate-programmable PN junction as the rectifier and one resistor as the load,which are not conductive to voltage output and large-scale *** we propose an approach of complementary gate-programmable PN junctions to assemble reconfigurable rectifier circuit,which include two symmetric back-to-back black phosphorus(BP)/hexagonal boron nitride(h-BN)/graphene heterostructured semi-gate field-effect transistors(FETs)and perform complementary NP and PN junction like complementary metal-oxide-semiconductor(CMOS)*** investigation exhibits that the circuit can effectively reconfigure the circuit with/without rectifying ability,and can process alternating current(AC)signals with the frequency prior 1 KHz and reconfiguration speed up to 25μ*** also achieve the reconfigurable rectifier circuit memory via complementary semi-floating gate FETs *** complementary configuration here should be of low output impedance and low static power consumption,being beneficial for effective voltage output and large-scale integration.

关键词： two-dimensional(2D)material PN junction rectifier circuit complementary configuration