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铁道学报 2004年第2期26卷 26-31页

作者：范莉莉张亮肖翔西南交通大学经济管理学院四川成都610031 北京交通大学经济管理学院北京100044

对铁路运输高新技术装备效益评价指标体系进行研究,从经济、社会和技术效益三方面考虑其效益的诸多内涵,提出了一套评价指标体系,并用层次分析法评价模型结合在贵阳铁路分局遵义机务段的实际调研资料,对2000型列车监控运行记录装置进行... 详细信息

对铁路运输高新技术装备效益评价指标体系进行研究,从经济、社会和技术效益三方面考虑其效益的诸多内涵,提出了一套评价指标体系,并用层次分析法评价模型结合在贵阳铁路分局遵义机务段的实际调研资料,对2000型列车监控运行记录装置进行了综合评价。

关键词：高新技术装备效益评价指标体系

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铁路客运客户价值分析模型的构建

铁道运输与经济 2004年第9期26卷 55-58页

作者：张韬陈学东李学伟李雪梅北京交通大学经济管理学院北京100044

建立完备的客运客户价值分析体系,确定铁路效益贡献价值不同类别的客户,对合理配置运力资源有重要作用。由于铁路运输的客户价值很难量化,需考虑多种因素,因此构建铁路客运客户价值分析模型,主要从客户角度出发,结合客户评价的主观性,... 详细信息

建立完备的客运客户价值分析体系,确定铁路效益贡献价值不同类别的客户,对合理配置运力资源有重要作用。由于铁路运输的客户价值很难量化,需考虑多种因素,因此构建铁路客运客户价值分析模型,主要从客户角度出发,结合客户评价的主观性,以客户效用函数来量化客户价值。

关键词：铁路客运客户价值分析模型主观性分析

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企业数字化转型、人力资本升级与高质量就业

北京工商大学学报（社会科学版） 2024年第3期39卷 40-52页

作者：李旭超张文怡赵婧武汉大学经济与管理学院湖北武汉430072

数字化转型在改善企业经营模式、加快产业结构转型的同时,也对企业人力资本结构以及实现高质量充分就业产生了显著影响。利用2010—2020年中国A股上市公司数据,实证分析了企业数字化转型对人力资本升级以及高质量就业的影响。研究发现,... 详细信息

数字化转型在改善企业经营模式、加快产业结构转型的同时,也对企业人力资本结构以及实现高质量充分就业产生了显著影响。利用2010—2020年中国A股上市公司数据,实证分析了企业数字化转型对人力资本升级以及高质量就业的影响。研究发现,企业数字化转型显著促进了人力资本升级。机制检验表明,企业数字化转型通过提高研发投入和扩张经营规模促进人力资本升级。异质性分析表明,企业数字化转型仅对非国有企业、制造业企业和小规模企业的人力资本升级具有促进作用。进一步讨论发现:企业数字化转型同时扩大了对高、低学历层次劳动力的需求,表明数字技术对低学历劳动力就业的替代效应并不显著;企业数字化转型带来了劳动力工作效率和就业质量的提高,推动了企业层面高质量就业的实现。因此,数字经济时代,企业要把握数字化转型机遇,注重对内部组织架构的数字化改造,提升对高技能劳动力的吸纳能力,推动人力资本升级,实现高质量就业,助力经济高质量发展。

关键词：数字化转型人力资本升级学历结构工作效率薪酬高质量就业

A review of artificial intelligence applications in high-speed railway systems

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High-Speed Railway 2024年第1期2卷 11-16页

作者： Xuehan li Minghao Zhu Boyang zhang Xiaoxuan Wang Zha liu liang Han school of Electronic and Information Engineering Beijing Jiaotong UniversityBeijing 100044China school of economics and management Beijing Jiaotong UniversityBeijing 100044China Business school of Hunan university Changsha 410082China

In recent years,the global surge of High-speed Railway(HSR)revolutionized ground transportation,providing secure,comfortable,and punctual *** next-gen HSR,fueled by emerging services like video surveillance,emergency communication,and real-time scheduling,demands advanced capabilities in real-time perception,automated driving,and digitized services,which accelerate the integration and application of Artificial Intelligence(AI)in the HSR *** paper first provides a brief overview of AI,covering its origin,evolution,and breakthrough applications.A comprehensive review is then given regarding the most advanced AI technologies and applications in three macro application domains of the HSR system:mechanical manufacturing and electrical control,communication and signal control,and transportation *** literature is categorized and compared across nine application directions labeled as intelligent manufacturing of trains and key components,forecast of railroad maintenance,optimization of energy consumption in railroads and trains,communication security,communication dependability,channel modeling and estimation,passenger scheduling,traffic flow forecasting,high-speed railway smart ***,challenges associated with the application of AI are discussed,offering insights for future research directions.

关键词： High-speed railway Artificial intelligence Intelligent distribution Intelligent control Intelligent scheduling

Research on the knee region of cosmic ray by using a novel type of electron-neutron detector array

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Frontiers of physics 2024年第4期19卷 13-24页

作者： Bing-Bing li Xin-Hua Ma Shu-Wang Cui Hao-Kun Chen Tian-Lu Chen Danzengluobu Wei Gao Hai-Bing Hu Denis Kuleshov Kirill Kurinov Hu liu Mao-Yuan liu Ye liu Da-Yu Peng Yao-Hui Qi Oleg Shchegolev Yuri Stenkin li-Qiao Yin Heng-Yu zhang liang-Wei zhang College of Physics Hebei Normal UniversityShijiazhuang 050024China Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China TIANFU Cosmic Ray Research Center Chengdu 610000China College of Science Tibet UniversityLhasa 850000China Key Laboratory of Comic Rays Ministry of EducationTibet UniversityLhasa 850000China Institute for Nuclear Research of the Russian Academy of Sciences Moscow 117312Russia school of Physical Science and Technology Southwest Jiaotong UniversityChengdu 610031China school of management Science and Engineering Hebei University of Economics and BusinessShijiazhuang 050061China Moscow Institute of Physics and Technology Moscow 141700Russia

By accurately measuring composition and energy spectrum of cosmic ray,the origin problem of so called“knee”region(energy>one PeV)can be ***,up to the present,the results of the spectrum in the knee region obtained by several previous experiments have shown obvious differences,so they cannot give effective evidence for judging the theoretical models on the origin of the ***,the Large High Altitude Air Shower Observatory(LHAASO)has reported several major breakthroughs and important results in astro-particle physics *** on its advantages of wide-sky survey,high altitude location and large area detector arrays,the research content of LHAASO experiment mainly includes ultra high-energy gamma-ray astronomy,measurement of cosmic ray spectra in the knee region,searching for dark matter and new phenomena of particle physics at higher *** electron and thermal neutron detector(EN-Detector)is a new scintillator detector which applies thermal neutron detection technology to measure cosmic ray extensive air shower(EAS).This technology is an extension of *** EN-Detector Array(ENDA)can highly efficiently measure thermal neutrons generated by secondary hadrons so called“skeleton”of *** this paper,we perform the optimization of ENDA configuration,and obtain expectations on the ENDA results,including thermal neutron distribution,trigger efficiency and capability of cosmic ray composition *** obtained real data results are consistent with those by the Monte Carlo simulation.

关键词： cosmic ray EAS knee region LHAASO ENDA

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试论铁道车辆铸钢件质量升级的技术途径

铁道机车车辆 2003年第2期23卷 14-17页

作者：张励忠邢书明何淑华张鹏杜云慧刘汉武北方交通大学半固态成形研究中心北京100044 石家庄车辆厂河北石家庄050000

铁道车辆铸钢件目前的主要生产工艺普遍采用砂型铸造和精密铸造方法生产 ,产品内部缺陷率高、质量稳定性差 ,因而安全可靠性低 ,严重威胁列车运行安全。采用树脂砂铸造对解决这些问题作用也不明显。以锻代铸虽然可以提高产品的质量档次... 详细信息

铁道车辆铸钢件目前的主要生产工艺普遍采用砂型铸造和精密铸造方法生产 ,产品内部缺陷率高、质量稳定性差 ,因而安全可靠性低 ,严重威胁列车运行安全。采用树脂砂铸造对解决这些问题作用也不明显。以锻代铸虽然可以提高产品的质量档次和稳定性 ,但生产成本大幅度提高 ,而且仅限于形状简单的零件。利用半固态成形作为铁道车辆铸钢件生产工艺升级 ,不仅技术上可行。

关键词：铁道车辆铸钢件质量技术升级制造工艺

研发信息披露对研发活动溢出效应的影响——来自创业板的经验数据

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科技进步与对策 2018年第11期35卷 18-26页

作者：程小可张慧慧李昊洋王景北京交通大学经济管理学院北京100044 中国电力财务公司北京100001

以创业板公司2012-2016年的数据为样本,检验行业领先公司研发信息披露质量对同行业公司研发溢出效应的影响。同时,考察该影响在同行业公司不同动机(行业地位)和能力(融资约束)下的差异。研究发现,行业领先公司的研发信息披露质量与研发... 详细信息

以创业板公司2012-2016年的数据为样本,检验行业领先公司研发信息披露质量对同行业公司研发溢出效应的影响。同时,考察该影响在同行业公司不同动机(行业地位)和能力(融资约束)下的差异。研究发现,行业领先公司的研发信息披露质量与研发活动溢出效应显著正相关,且该影响对于行业地位高以及融资约束较低的同行业公司更为明显。进一步对研发投入阶段进行区分后发现,研发信息披露质量对研发活动溢出效应的影响主要存在于研究阶段。

关键词：研发信息披露质量研发溢出效应行业地位融资约束

CEPC Technical Design Report

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Radiation Detection Technology and Methods 2024年第1期8卷 I0003-I0016,1-1091页

作者： Waleed Abdallah Tiago Carlos Adorno de Freitas Konstantin Afanaciev Shakeel Ahmad Ijaz Ahmed Xiaocong Ai Abid Aleem Wolfgang Altmannshofer Fabio Alves Weiming An Rui An Daniele Paolo Anderle Stefan Antusch Yasuo Arai Andrej Arbuzov Abdesslam Arhrib Mustafa Ashry Sha Bai Yu Bai Yang Bai Vipul Bairathi Csaba Balazs Philip Bambade Yong Ban Tripamo Bandyopadhyay Shou-Shan Bao Desmond P.Barber Ayse Bat Varvara Batozskaya Subash Chandra Behera Alexander Belyaev Michele Bertucci Xiao-Jun Bi Yuanjie Bi Tianjian Bian Fabrizio Bianchi Thomas Biekotter Michela Biglietti Shalva Bilanishvili Deng Binglin Denis Bodrov Anton Bogomyagkov Serge Bondarenko Stewart Boogert Maarten Boonekamp Marcello Borri Angelo Bosotti Vincent Boudry Mohammed Boukidi Igor Boyko Ivanka Bozovic Giuseppe Bozzi Jean-Claude Brient Anastasiia Budzinskaya Masroor Bukhari Vladimir Bytev Giacomo Cacciapaglia Hua Cai Wenyong Cai Wujun Cai Yijian Cai Yizhou Cai Yuchen Cai Haiying Cai Huacheng Cai Lorenzo Calibbi Junsong Cang Guofu Cao Jianshe Cao Antoine Chance Xuejun Chang Yue Chang Zhe Chang Xinyuan Chang Wei Chao Auttakit Chatrabhuti Yimin Che Yuzhi Che Bin Chen Danping Chen Fuqing Chen Fusan Chen Gang Chen Guoming Chen Hua-Xing Chen Huirun Chen Jinhui Chen Ji-Yuan Chen Kai Chen Mali Chen Mingjun Chen Mingshui Chen Ning Chen Shanhong Chen Shanzhen Chen Shao-Long Chen Shaomin Chen Shiqiang Chen Tianlu Chen Wei Chen Xiang Chen Xiaoyu Chen Xin Chen Xun Chen Xurong Chen Ye Chen Ying Chen Yukai Chen Zelin Chen Zilin Chen Gang Chen Boping Chen Chunhui Chen Hok Chuen Cheng Huajie Cheng Shan Cheng Tongguang Cheng Yunlong Chi Pietro Chimenti Wen Han Chiu Guk Cho Ming-Chung Chu Xiaotong Chu Ziliang Chu Guglielmo Coloretti Andreas Crivellin Hanhua Cui Xiaohao Cui Zhaoyuan Cui Brunella D'Anzi ling-Yun Dai Xinchen Dai Xuwen Dai Antonio De Maria Nicola De Filippis Christophe De La Taille Francesca De Mori Chiara De Sio Elisa Del Core Shuangxue Deng Wei-Tian Deng Zhi Deng Ziyan Deng Bhupal Dev Tang Dewen Biagio Di Micco Ran Ding Siqin Dingl Yadong Ding Haiyi Dong Jianin AGH university of Science and Technology Faculty of Physics and Applied Computer ScienceKrakow Anhui university HefeiAnhui Applied Physics Department Federal Urdu University of ArtsScience and TechnologyIslamabad Banaras Hindu university Institute of ScienceVaranasi Bandirma Onyedi Eylul university Bandirma Beihang university Beijing beijing Computational Science Research Center Beijing beijing Conveyi LTD Beijing beijing Glass Research Institute Co. LtdBeijing beijing Institute of Technology Beijing beijing Normal university Beijing Brown university ProvidenceRI Budker Institute of Nuclear Physics Novosibirsk Cadi Ayyad university Laboratory of Fundamental and Applied PhysicsPolydisciplinary FacultyMarrakech Cairo university Giza Center for Theory and Computation National Tsing Hua UniversityHsinchu Central China Normal university WuhanHubei Central South university ChangshaHunan Centro de Fisica Teorica de Particulas Universidade Tecnica de LisboaLisboa Chengdu KaitengSifang Digital Radio&TV Equipment Co. LtdChengduSichuan China academy of engineering physics MianyangSichuan China building materials academy Beijing China Center of Advanced Science and Technology Beijing China Institute of Atomic Energy Beijing China Jiliang university HangzhouZhejiang China Nuclear Instrument CO. LTDBeijing China university of Geosciences Beijing China university of Geosciences WuhanHubei China university of Mining and Technology XuzhouJiangsu China West Normal university NanchongSichuan Chongqing university Department of PhysicsChongqing Chulalongkorn university Bangkok City university of Hong Kong Department of PhysicsHong Kong Cockcroft Institute Daresbury Cornell university IthacaNY CPPM(AMU/IPhU&CNRS/INP) Marseille Dalian Minzu university DalianLiaoning Dalian university of Technology Department of PhysicsDalian Deutsches Elektronen-Synchrotron DESY Hamburg Dzhelepov Laboratory of Nuclear Problems of Joint Institute for Nuclear Research(DLNP JINR) Dubna East China university Of Science And Technol

The Circular Electron Positron Collider(CEPC)is a large scientific project initiated and hosted by China,fostered through extensive collaboration with international *** complex comprises four accelerators:a 30 GeV linac,a 1.1 GeV Damping Ring,a Booster capable of achieving energies up to 180 GeV,and a Collider operating at varying energy modes(Z,W,H,and tt).The linac and Damping Ring are situated on the surface,while the subterranean Booster and Collider are housed in a 100 km circumference underground tunnel,strategically accommodating future expansion with provisions for a potential Super Proton Proton Collider(SPPC).The CEPC primarily serves as a Higgs *** its baseline design with synchrotron radiation(SR)power of 30 MW per beam,it can achieve a luminosity of 5×10^(34.cm^(-2)s^(-1)per interaction point(IP),resulting in an integrated luminosity of 13 ab^(-1)for two IPs over a decade,producing 2.6 million Higgs *** the SR power to 50 MW per beam expands the CEPC's capability to generate 4.3 million Higgs bosons,facilitating precise measurements of Higgs coupling at sub-percent levels,exceeding the precision expected from the HL-LHC by an order of *** Technical Design Report(TDR)follows the Preliminary Conceptual Design Report(Pre-CDR,2015)and the Conceptual Design Report(CDR,2018),comprehensively detailing the machine's layout,performance metrics,physical design and analysis,technical systems design,R&D and prototyping efforts,and associated civil engineering ***,it includes a cost estimate and a preliminary construction timeline,establishing a framework for forthcoming engineering design phase and site selection *** is anticipated to begin around 2027-2028,pending government approval,with an estimated duration of 8 *** commencement of experiments and data collection could potentially be initiated in the mid-2030s.

关键词： initiated exceeding precise

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基于指数扩散过程的退化模型误指定分析

计算机集成制造系统 2024年第10期30卷 3685-3697页

作者：鄢伟安李欣忆张士杰刘卫东南昌大学先进制造学院中国科学院大学经济与管理学院华东交通大学交通运输工程学院

退化模型是对性能退化产品进行可靠性分析的基础，鉴于误用模型直接影响可靠性评估的精度，研究将适用范围广泛的指数扩散过程模型误指定为3种常见的维纳过程模型、伽马过程模型和逆高斯过程模型，通过引入相对偏差和相对变异率两个指... 详细信息

退化模型是对性能退化产品进行可靠性分析的基础，鉴于误用模型直接影响可靠性评估的精度，研究将适用范围广泛的指数扩散过程模型误指定为3种常见的维纳过程模型、伽马过程模型和逆高斯过程模型，通过引入相对偏差和相对变异率两个指标，以量化模型误指定对产品平均寿命的影响程度，并采用GaAs激光器数据和蒙特卡罗方法进行实例验证。结果表明，模型误指定将对产品平均寿命估计带来较大影响，在性能退化产品的可靠性研究中应尽量选取适用范围更广的指数扩散过程模型，以提高可靠性评估的准确性。

关键词：模型误指定指数扩散过程平均失效时间伪极大似然估计