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1.B-doped MCP detector developed for neutron resonance imaging at Back-n white neutron source

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Nuclear science and Techniques 2024年第8期35卷 58-68页

作者： Qiang Li Li‑Jiao wang Jing‑Yu Tang Xiang‑Biao Qiu Zhen Chen Mao‑Yuan Zhao Chang‑Jun Ning Kai Pan Wei Xu Tao Li {1.‑Peng Lu Han Yi Rui‑Rui Fan Chang‑Qing Feng Rong Zhang Xiao‑Yang {1.n Qi An Hao‑Fan Bai Jiang‑Bo Bai Jie Bao Ping Cao Qi‑Ping Chen yong‑Hao Chen zeng‑Qi Cui An‑Chuan Fan Fan‑Zhen Feng Min‑Hao Gu Chang‑Cai Han Zi‑Jie Han Guo‑Zhu He yong‑Cheng He Yang Hong Yi‑Wei Hu Han‑Xiong Huang Wei Jiang Zhi‑Jie Jiang Zheng‑Yao Jin Ling Kang Bo Li Gong Li Xiao Li Yang Li Jie Liu Rong Liu Shu‑Bin Liu Yi‑Na Liu Guang‑Yuan Luan Jie Ren Zhi‑Zhou Ren Xi‑Chao Ruan Zhao‑Hui Song Kang {1.n Zhi‑Xin Tan Sheng‑Da Tang Jin‑Cheng wang Peng‑Cheng wang Zhao‑Hui wang Zhong‑Wei Wen Xiao‑Guang Wu Xuan Wu Cong Xia yong‑Ji Yu Guo‑Hui Zhang Hang‑Chang Zhang Lin‑Hao Zhang Qi‑Wei Zhang Xian‑Peng Zhang Yu‑Liang Zhang Yue Zhang Zhi‑yong Zhang Zhi‑Hao Zhou Ke‑Jun Zhu Chong Zou Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source science Center Dongguan 523803China State Key Laboratory of Particle Detection and Electronics Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Dongguan Songshan Lake Future school Dongguan 523808China school of Nuclear {1. and {2. University of Science and Technology of ChinaHefei 230027China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China North Night Vision science and {1.(Nanjing)Research Institute Co.Ltd Nanjing 211106China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Nuclear Physics and technology School of PhysicsPeking UniversityBeijing 100871China Institute of Modern Physics Fudan UniversityShanghai 200433China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China china Academy of Engineering Physics Institute of Nuclear Physics and ChemistryMianyang 621900China USTC archaeometry lab University of Science and Technology of ChinaHefei 230026China Northwest Institute of Nuclear technology Xi’an 710024China university of Chinese Academy of {1.s Beijing 100049China china Shipbuilding Trading Co. LtdBeijing 100044China

Neutron resonance imaging(NRI)has recently emerged as an appealing technique for neutron *** complexity surpasses that of conventional transmission imaging,as it requires a high demand for both a neutron source and ***,the progression of NRI {1. has been sluggish since its inception in the 1.80s,particularly considering the limited studies analyzing the neutron energy range above *** white neutron source(Back-n)at the china Spallation Neutron Source(CSNS)provides favorable beam conditions for the development of the NRI technique over a wide neutron energy range from eV to ***-sensitive microchannel plates(MCP)have emerged as a cutting-edge tool in the field of neutron detection owing to their high temporal and spatial resolutions,high detection efficiency,and low *** this study,we report the development of a 1.B-doped MCP detector,along with its associated electronics,data processing system,and NRI experiments at the *** heavy elements such as gold,silver,tungsten,and indium can be easily identified in the transmission images by their characteristic resonance peaks in the 1.1.0 eV energy range;the more difficult medium-weight elements such as iron,copper,and aluminum with resonance peaks in the 1.1.0 keV energy range can also be *** particular,results in the neutron energy range of dozens of keV(Aluminum)are reported here for the first time.

关键词： Neutron resonance imaging 1.B doped MCP detector White neutron source Sample nuclide identification

Emerging contaminants:A One Health perspective

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The Innovation 2024年第4期5卷 140-170,139页

作者： Fang wang Leilei Xiang Kelvin Sze-Yin Leung Martin Elsner Ying Zhang Yuming Guo Bo Pan Hongwen sun Taicheng An Guangguo Ying Bryan WBrooks Deyi Hou Damian EHelbling Jianqiang sun Hao Qiu Timothy MVogel Wei Zhang Yanzheng Gao Myrna JSimpson Yi Luo Scott XChang Guanyong su Bryan MWong Tzung-May Fu Dong Zhu Karl JJobst Chengjun Ge Frederic Coulon Jean Damascene Harindintwali Xiankui zeng Haijun wang Yuhao Fu Zhong Wei Rainer Lohmann Changer Chen Yang Song Concepcion Sanchez-Cid Yu wang Ali El-Naggar Yiming Yao Yanran Huang Japhet Cheuk-Fung Law Chenggang Gu Huizhong Shen Yanpeng Gao Chao Qin Hao Li Tong Zhang Natàlia Corcoll Min Liu Daniel SAlessi Hui Li Kristian KBrandt Yolanda Pico Cheng Gu Jianhua Guo Jianqiang su Philippe Corvini Mao Ye Teresa Rocha-Santos Huan He Yi Yang Meiping Tong Weina Zhang Fidèle suanon Ferdi Brahushi Zhenyu wang Syed AHashsham Marko Virta Qingbin Yuan Gaofei Jiang Louis A.Tremblay Qingwei Bu Jichun Wu Willie Peijnenburg Edward Topp Xinde Cao Xin Jiang Minghui Zheng Taolin Zhang yongming Luo Lizhong Zhu Xiangdong Li DamiàBarceló Jianmin Chen Baoshan Xing Wulf Amelung Zongwei Cai Ravi Naidu Qirong Shen Janusz Pawliszyn yong-guan Zhu Andreas Schaeffer Matthias C.Rillig Fengchang Wu Gang Yu James M.Tiedje State Key Laboratory of Soil and sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China university of Chinese Academy of {1.s Beijing 100049China Department of Chemistry Hong Kong Baptist UniversityHong KongChina HKBU Institute of Research and Continuing Education Shenzhen Virtual University ParkShenzhenChina Technical university of Munich TUM School of Natural SciencesInstitute of Hydrochemistry85748 GarchingGermany school of Resources&Environment Northeast Agricultural UniversityHarbin 150030China Climate Air Quality Research UnitSchool of Public Health and Preventive MedicineMonash UniversityMelbourneVICAustralia Faculty of Environmental science&Engineering Kunming University of Science&TechnologyKunming 650500China Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria College of Environmental Science and EngineeringNankai UniversityTianjin 300350China Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control School of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Ministry of Education Key Laboratory of Environmental Theoretical Chemistry South China Normal UniversityGuangzhouGuangdong 510006China Department of Environmental science Baylor UniversityWacoTXUSA Center for Reservoir and Aquatic Systems Research(CRASR) Baylor UniversityWacoTXUSA school of Environment Tsinghua UniversityBeijing 100084China school of Civil and Environmental Engineering Cornell UniversityIthacaNY 14853USA Key Laboratory of Microbial technology for Industrial Pollution Control of Zhejiang Province Zhejiang University of TechnologyHangzhou 310014China school of Environmental {1. and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Laboratoire d’Ecologie Microbienne Universite Claude Bernard Lyon 1UMR CNRS 5557UMR INRAE 1418VetAgro Sup69622 VilleurbanneFrance Department of Pla

Environmental pollution is escalating due to rapid global development that often prioritizes human needs over planetary *** global efforts to mitigate legacy pollutants,the continuous introduction of new substances remains a major threat to both people and the *** response,global initiatives are focusing on risk assessment and regulation of emerging contaminants,as demonstrated by the ongoing efforts to establish the UN’s Intergovernmental {1.-Policy Panel on Chemicals,Waste,and Pollution *** review identifies the sources and impacts of emerging contaminants on planetary health,emphasizing the importance of adopting a One Health *** for monitoring and addressing these pollutants are discussed,underscoring the need for robust and socially equitable environmental policies at both regional and international *** actions are needed to transition toward sustainable pollution management practices to safeguard our planet for future generations.

关键词： pollution planet contaminants

Extraction optimization of insecticidal compounds from Lysurus mokusin by response surface methodology

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Journal of Forestry Research 2020年第5期31卷 1985-1993页

作者： Liannan Lin Jing Yang Guocai Zhang Xiaobo Zhang Chuanshan Zou Tingyu wang Jian{1. {2. school of Forestry Northeast Forestry UniversityHarbin 150040People’s Republic of China

We optimized the extraction process of Lysurus mokusin(L.)*** compound(LMIC)using response surface methodology with ultrasonic extraction(UE).The surface morphologies of maceration extract(ME)and UE residues were compared by scanning electron microscopy,and then the activity of LMIC on Lymantria dispar(Asian gypsy moths)larvae was *** showed that the optimal condition of UE was followed by 80 min of extraction time,60%of ethanol concentration and 80 mL g^-1.of liquid–solid *** surface morphologies of UE residue were looser and rougher than ME *** corrected mortalities of LMIC on *** larvae was 59.77%.This result indicated that *** was a good candidate as pesticide for pest management.

关键词： Lysurus mokusin Gypsy moth Response surface Extraction process Toxicity test

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 {1. 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 Wen{1. 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 {1. and {2. 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 {1. 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 {1. and {2. Beijing china Institute of Atomic Energy Beijing china Jiliang {1. HangzhouZhejiang china Nuclear Instrument CO. LTDBeijing china {1. of Geo{2.s Beijing china {1. of Geo{2.s WuhanHubei china {1. of Mining and {2. XuzhouJiangsu china West Normal {1. 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 {1. Department of PhysicsDalian Deutsches Elektronen-Synchrotron DESY Hamburg Dzhelepov Laboratory of Nuclear Problems of Joint Institute for Nuclear Research(DLNP JINR) Dubna East china {1. Of {2. 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 1.0 GeV,and a Collider operating at varying energy modes(Z,W,H,and tt).The Linac and Damping Ring are situated on the {1.rface,while the {1.bterranean Booster and Collider are housed in a 1.0 km circumference underground tunnel,strategically accommodating future expansion with provisions for a potential {1.per 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 5×1.^(34)cm^(-2.s^(-1.per interaction point(IP),re{1.lting in an integrated luminosity of 1. 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 mea{1.rements of Higgs coupling at {1.b-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,2.1.)and the Conceptual Design Report(CDR,2.1.),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 2.2.-2.2.,pending government approval,with an estimated duration of 8 *** commencement of experiments and data collection could potentially be initiated in the mid-2.30s.

关键词： initiated exceeding precise

Population exposure to precipitation extremes in the Indus River Basin at1.5℃,2.0℃and 3.0℃warming levels

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Advances in Climate Change Research 2021年第2期12卷 199-209页

作者： ZHAO Jian-Ting su Bu-Da Sanjit Kumar MONDAL {1. Yan-Jun TAO Hui JIANG Tong Institute for Disaster Risk management/{1. of Geography {2. Nanjing University of Information Science&TechnologyNanjing210044China State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi830011China

Adverse effects of extreme events are the major focus of climate change impact ***-related extremes has substantial so-cioeconomic impacts under the changing *** population exposure to precipitation extreme is the fundamental aspect ofpopulation risk assessments in the climate hotspot of Indus River *** study investigates the population exposure to precipitation ex-tremes at 1.5℃,2.0℃,and 3.0℃global warmings in the Indus River Basin using daily precipitation data,and projected population undershared socioeconomic pathways(SSPs).The IntensityeAreaeDuration method was applied to detect the extreme precipitation event by tracingthe rainstorm process,calculated based on five downscaled and bias-corrected Global Climate Model(GCM)outputs from Coupled ModelIntercomparison Project Phase 5(CMIP5)under four Representative Concentration Pathways(RCP2.6,RCP4.5,RCP6.0,and RCP8.5).Theexposure of the population is finally estimated by combing SSP1.with 1.5℃,SSP2.with 2.0℃,and SSP5 with 3.0℃warming *** that warming over the Indus River Basin is projected to be higher than that of the global *** the extreme precipitation events andpopulation exposure are projected to increase with warming *** regard to the reference period(1.86e2.05),the frequency,duration,andimpacted area of extreme precipitation are projected to increase by 1..2.,7.4%,and 1.6%annually under 1.5℃in the Indus River Basin,***,an additional 0.5℃and 1.5℃warming can lead to further increase in the frequency of 1..6%,1..3%,as well as theduration of 8.6%,1.%,and areal coverage of 2.1.,5.3%,*** population exposure to extreme precipitation is projected to increaseby 72.4%,1.2.7%,and 87.6%,respectively,at SSP1.with 1.5℃,SSP2.with 2.0℃and SSP5 with 3.0℃warming levels compare to thereference *** demographic change is responsible more for the tremendous increment of population exposure in the Indus River *** pop

关键词： Population exposure Extreme precipitation Intensitye Areae Duration Warming scenarios Indus River Basin

Spatiotemporal variations of aridity index over the Belt and Road region under the 1.5℃ and 2.0℃ warming scenarios

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Journal of Geographical sciences 2020年第1期30卷 37-52页

作者： ZHOU Jian JIANG Tong wang Yanjun {1. Buda TAO Hui QIN Jiancheng ZHAI Jianqing Collaboration Innovation Center on Forecast and Evaluation of Meteorological Disasters/Institute for Disaster Risk management/{1. of Geographical {2. Nanjing University of Information Science&TechnologyNanjing 210044China National Climate Center China Meteorological AdministrationBeijing 100081China State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyCASUrumqi 830011China university of Chinese Academy of {1.s Beijing 101408China

Aridity index reflects the exchanges of energy and water between the land surface and the atmosphere,and its variation can be used to forecast drought and flood patterns,which makes it of great significance for agricultural *** ratio of potential evapotranspiration and precipitation is {1. to analyse the spatial and temporal distributions of the aridity index in the Belt and Road region under the 1.5℃and 2.0℃global warming scenarios on the basis of outputs from four downscaled global climate *** results show that:(1.Under the 1.5℃warming scenario,the area-averaged aridity index will be similar to that in 1.86-2.05(around 1.58),but the changes vary *** aridity index will increase by more than 5%in Central-Eastern Europe,north of West Asia,the monsoon region of East Asia and northwest of Southeast Asia,while it is projected to decrease obviously in the southeast of West *** the seasonal scale,spring and winter will be more arid in South Asia,and the monsoon region of East Asia will be slightly drier in summer compared with the reference ***,West Asia will be wetter in all seasons,except winter.(2.Relative to 1.86-2.05,both areal averaged annual potential evapotranspiration and precipitation are projected to increase,and the spatial variation of aridity index will become more obvious as well at the 2.0℃warming *** the aridity index over the entire region will be maintained at approximately 1.57 as that in 1.5℃,the index in Central-Eastern Europe,north of West Asia and Central Asia will grow rapidly at a rate of more than 2.%,while that in West Siberia,northwest of {12.,the southern part of South Asia and West Asia will show a declining *** the seasonal scale,the increase of the aridity index in Central-Eastern Europe,Central Asia,West Asia,South Asia and the northern part of Siberia in winter will be obvious,and the monsoon region in East Asia will be drier in both summer and autumn.(3)Under the scena

关键词： 1.5℃and 2.0℃global warming scenarios aridity index spatial and temporal variations the Belt and Road region

Smart construction site in mega construction projects: A case study on island tunneling project of Hong Kong-Zhuhai-Macao Bridge

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Frontiers of Engineering management 2018年第1期5卷 78-87页

作者： Hongtao ZHOU Hongwei wang Wei {1. school of Automation Huazhong University of Science and Technology school of {1. Huazhong University of Science and Technology

The construction sites of mega construction projects(MCP) often have numerous participants with interfacing work within a highly complex system. It is critical how to realize collaborative work and information sharing among such participants. The information and communication technologies(ICTs) provides a technical guarantee for solving this problem. Existing research has been achieved the partial processes digitization of construction site, but certain problems still exist: 1.information perception of the construction site is passive.2. common collaboration and coordination problems in the construction industry have not been addressed. The emerging trends of ICTs have resulted in the integration of various computer technologies such as CPS, BIM, big data, and cloud computing into construction process,which would changes behavioral and management mode of construction sites. These new ICTs have been applied successfully in MCP, in particular, Hong Kong-ZhuhaiMacao Bridge project. A new management mode of construction sites is inspired by these case. In this paper, a new management mode of construction site for MCP has been proposed, namely, smart construction site. The ultimate goal of smart construction site is to accomplish safe, efficient and high-quality construction. This study put forward the conceptual framework for smart construction site, and have identified three key elements of smart construction site, including information support platform,collaboration work, and intelligent construction management. A case study on Hong Kong-Zhuhai-Macao Bridge project work as an evidence to support the practicability of the proposed mode. Significant contributions of this study is to propose a new management mode for MCP in construction industry, which would enrich the body of knowledge or the construction management *** research should be dedicated to further explore the potential of smart construction site in MCP management.

关键词： mega construction projects smart construc tion site information perception collaborative work intelligent construction management information and communication technologies

专业技术领域核心专利组合识别方法构建及其应用比较

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数据分析与知识发现 2022年第11期6卷 61-71页

作者：曾闻王曰芬南京理工大学知识产权学院南京210094 天津师范大学管理学院天津300380 天津师范大学大数据科学研究院天津300380

【目的】从识别指标信息的多元与不同赋权及排序算法组配的综合视角,结合大规模数据集的特点,研究核心专利组合识别方法的构建及其应用对比。【方法】通过交叉组配构建5种组合识别方法,选取6项专利特征信息,以人工智能领域为例,从整体... 详细信息

【目的】从识别指标信息的多元与不同赋权及排序算法组配的综合视角,结合大规模数据集的特点,研究核心专利组合识别方法的构建及其应用对比。【方法】通过交叉组配构建5种组合识别方法,选取6项专利特征信息,以人工智能领域为例,从整体与局部层次对比各方法的特征和应用情境。【结果】不同组合识别方法在不同的数据集与时间段有较高的一致性。同时,不同方法识别的结果随着被识别的核心专利数量增加而两两间重合率逐渐减少,例如方法(1.与方法(4)的核心专利重合率由80%降至47%。【局限】仅考虑现实研究中较普遍的核心识别需求,可进一步研究针对特定的、个性化的核心识别需求的专利组合识别方法。【结论】所构建的5种组合识别方法,基于专利数据集的规模、分散程度、时间跨度和特征值表现及技术领域发展的差异,可分别应用到核心专利识别不同应用需求场景中。针对快速发展的人工智能领域,熵权法赋权结合灰色关联分析和熵权法赋权结合TOPSIS这两种方法识别效果更优。

关键词：核心专利识别组合识别方法单一赋权组合赋权

Tunnel face stability and ground settlement in pressurized shield tunnelling

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Journal of Central South university 2014年第4期21卷 1600-1606页

作者：苏艺汪国锋周庆宏 Beijing Railway Construction and management Co. Ltd. school of Engineering and {1. China University of Geosciences (Beijing) Haikou Forest Farm

An analysis of the stability of large-diameter circular tunnels and ground settlement during tunnelling by a pressurized shield was presented. An innovative three-dimensional translational multi-block failure mechanism was proposed to determine the face support pressure of large-shield tunnelling. Compared with the currently available mechanisms, the proposed mechanism has two unique features:(1. the supporting pressure applied to the tunnel face is assumed to have a non-uniform rather than uniform distribution, and(2. the method takes into account the entire circular excavation face instead of merely an inscribed ellipse. Based on the discrete element method, a numerical simulation of the Shanghai Yangtze River Tunnel was carried out using the Particle Flow Code in two dimensions. The immediate ground movement during excavation, as well as the behaviour of the excavation face, the shield movement, and the excavated area, was considered before modelling the excavation process.

关键词： settlement large-diameter shield tunnel three-dimensional failure mechanism