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Upgrade of transportation infrastructure and Siting of Polluting Enterprises:The Case of High-Speed Railway Launch in China

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中国经济学人：英文版 2022年第3期17卷 89-112页

作者：蔡宏波钟超韩金镕 Business School Beijing Normal UniversityBeijingChina Institute of European Studies Chinese Academy of Social SciencesBeijingChina

With the quasi-natural experiment of the launching of high-speed railways in Chinese cities,this paper empirically investigated the effects of the upgrade of the transportation infrastructure on the site selection of polluting enterprises.We found that although the launching of a high-speed railway generally has a negative impact on the siting of polluting enterprises:(i)While there was a significant decrease in polluting enterprises of a private and other nature,the reduction in overseas-funded and state-owned enterprises was insignificant;(ii)while the launching of a high-speed railway greatly restrained the entry of polluting enterprises in the eastern region,large cities and more developed cities,this was followed by the movement of more polluting enterprises to the central and western regions,small and medium-sized cities and less developed cities;(iii)there was a significant decrease in polluting enterprises in environmentally conscious cities after the launching of a high-speed railway.This paper also found that infrastructure upgrade may influence the siting of polluting enterprises through the following:Environmental cleanness,factor concentration and spatial integration.Government authorities and market entities should be fully aware of and attach great importance to how the transportation infrastructure influences the site selection of businesses,as this is of great significance for China’s regional development planning,local business climate and investment planning,environmental protection,and other related policymaking initiatives.

关键词： transportation infrastructure high-speed railway polluting enterprises site selection

Iterative Factors Favoring Collaboration for Interorganizational Resilience:The Case of the Greater Montréal transportation infrastructure

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International Journal of Disaster Risk Science 2015年第1期6卷 75-86页

作者： Marie-Christine Therrien Stéphane Beauregard Anais Valiquette-L'Heureux National School of Public Administration(ENAP) University of Montréal

Between members of a network, interorganizational resilience is favored by effective collaboration and coordination during a crisis. The quality of that collaboration depends on various iterative factors present between these organizations before the occurrence of a crisis.We find that these factors are iterative since collaboration factors follow a mutually reinforcing cycle: collaboration within a crisis management network is conditioned by a general agreement, which is in turn conditioned by the extent to which the institutions coordinate themselves prior to crisis. We evaluated the factors that promote collaboration between public and private organizations that manage the Greater Montréal transportation infrastructure.These factors are based on adaptive management processes such as mutual agreements, common organizational culture, knowledge and financial resources, levers of power,regulations, and pressure. Crisis management coordination represents the ability to build and assess the effectiveness of common response plans to risks to which they are exposed. We show how these processes vary depending on the links between private and public organizations.

关键词： Adaptive management Collaborative management Interorganizational resilience Montréal transportation infrastructure

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交通基础设施、空间溢出效应与物流产业效率

物流管理

Seismic behavior of tire waste-sand mixtures for transportation infrastructure in cold regions

物流管理 2017年第9期

作者：刘瑞娟王建伟黄泽滨

在经济增长理论、运输经济理论和经济地理理论的基础上，探究了交通基础设施对物流产业效率时空演变与空间溢出效应的影响机理。基于2005-2015年“丝绸之路经济带”西北5省区的面板数据，采用SFA模型测算物流产业效率，并运用空间面板... 详细信息

在经济增长理论、运输经济理论和经济地理理论的基础上，探究了交通基础设施对物流产业效率时空演变与空间溢出效应的影响机理。基于2005-2015年“丝绸之路经济带”西北5省区的面板数据，采用SFA模型测算物流产业效率，并运用空间面板计量方法实证检验了交通基础设施对物流产业效率的空间溢出效应。实证研究的结果表明：“丝绸之路经济带”西北5省区的物流产业效率存在一定的差异但是整体效率在不断提升，邻省交通基础设施水平和本省交通基础设施水平都对本省的物流产业效率具有显著的正向溢出效应，以期为物流产业效率问题研究提供一定的理论评价参考。

关键词： “丝绸之路经济带” 交通基础设施物流产业效率空间溢出效应前沿函数分析　　the Silk Road Economic Belt transportation infrastructure efficiency of the logistics industry spatial spillover effects SFA

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Research in Cold and Arid Regions 2015年第5期7卷 626-631页

作者： Ay?e Edin?liler Ozgur Yildiz Kandilli Observatory and Earthquake Research Institute Department of Earthquake Engineering Bogazi?i University Deparment of Civil Engineering Bogazi?i University

Tire wastes have many properties that are valuable from a geotechnical engineering perspective, such as low density, high strength, thermal insulation, energy absorption capacity, permeability, durability, compressibility, resilience, and high frictional strength. Thus, tire wastes offer good thermal characteristics in resisting frost penetration and have good drainage characteristics, being as permeable as coarse granular soil for fill materials. The many advantages of tire wastes make the material suitable for transportation infrastructure construction in cold regions. Also, tire wastes with high damping prop- erty make them a preferable admixture with sand for transportation infrastructures in seismic regions, This study aimed to determine the seismic performance of certain tire waste-sand mixtures in cold regions. A 70% sand-30% tire crumb mixture by weight （TC30） with a very high damping property was selected for analysis as an engineering material for transportation infrastructure. Small-scale shake-table tests were conducted on this material as well as on a sand-only sample under two different temperatures, 0 ℃ and 20 ℃, to simulate cold-region and moderate-temperature performance, respectively. The 1999 lzmit Earthquake Excitation （EW）（Mw = 7.4） was taken as the input motion. Test results showed that the tire waste-sand mixture at 0 ℃ showed better seismic performance than that at room temperature, suggesting that a tire waste-sand mixture in cold regions may reduce seismic hazards to infrastructure.

关键词： tire waste-sand mixture transportation infrastructure cold regions earthquake seismic performance

Laser additive manufacturing for infrastructure repair:A case study of a deteriorated steel bridge beam

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Journal of Materials Science & Technology 2023年第23期154卷 149-158页

作者： Shengbiao Zhang Peijun Hou Jiyun Kang Tianyi Li Shahryar Mooraj Yang Ren Catherine H.Chen A.John Hart Simos Gerasimidis Wen Chen Department of Mechanical and Industrial Engineering University of Massachusetts Amherst MA 01003 USA Department of Civil and Environmental Engineering University of Massachusetts Amherst MA 01003 SA Department of Materials Science and Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA X-ray Science Division Argonne National Laboratory Lemont IL 60439 USA Massachusetts Department of transportation Boston MA 02116 USA Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA Department of Physics City University of Hong Kong Kowloon Hong Kong China

As our transportation infrastructure ages,its deterioration is becoming a growing concern.Rapid and effective methods for repair can reduce the need for time-and cost-intensive replacement of structures such as roadway bridges.In this work,laser-based additive manufacturing(AM)was developed for the repair of damaged beams in steel bridges.A corroded structural beam of low-carbon A36 steel was selected for this case study and 316L stainless steel was used for repair due to its excellent mechanical properties and corrosion resistance.Simulated repair experiments were performed on specimens extracted from the beam,and prepared with various groove shapes(Rectangular,Trapezoidal,and U-shaped).More in-depth parametric and microstructural studies were carried out with a series of U-shaped specimens repaired with the linear laser input energy varied from 19.5 to 30.0 J mm–1.The tensile properties of the repaired specimens and interface structures were also investigated in detail.It was found that the repaired specimens had a slightly higher tensile strength despite a reduction in tensile elongation compared to the A36 steel base metal.The influence of interfacial microstructure and heterogeneity on the mechanical properties of the repaired specimens was discussed.Our work suggests the promising potential to employ AM for structural repair and provides fundamental insights into processing-structure-property relationships in laser AM-repaired materials.

关键词： Additive manufacturing Structural repair Mechanical properties transportation infrastructure Dissimilar joint

Estimation of flexible pavement structural capacity using machine learning techniques

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Frontiers of Structural and Civil Engineering 2020年第5期14卷 1083-1096页

作者： Nader KARBALLAEEZADEH Hosein GHASEMZADEH TEHRANI Danial MOHAMMADZADEH SHADMEHRI Shahaboddin SHAMSHIRBAND Civil Engineering Department Shahrood University of TechnologyShahrood ***Iran Department of Civil Engineering Ferdowsi University of MashhadMashhad ***Iran Department of Elite Relations with Industries Khorasan Construction Engineering OrganizationMashhad ***Iran Department for Management of Science and Technology Development Ton Duc Thang UniversityHo Chi Minh CityVietnam Faculty of Information Technology Ton Duc Thang UniversityHo Chi Minh CityVietnam

The most common index for representing structural condition of the pavement is the structural number.The current procedure for determining structural numbers involves utilizing falling weight deflectometer and ground-penetrating radar tests,recording pavement surface deflections,and analyzing recorded deflections by back-calculation manners.This procedure has two drawbacks:falling weight deflectometer and ground-penetrating radar are expensive tests;back-calculation ways has some inherent shortcomings compared to exact methods as they adopt a trial and error approach.In this study,three machine learning methods entitled Gaussian process regression,M5P model tree,and random forest used for the prediction of structural numbers in flexible pavements.Dataset of this paper is related to 759 flexible pavement sections at Semnan and Khuzestan provinces in Iran and includes“structural number”as output and“surface deflections and surface temperature”as inputs.The accuracy of results was examined based on three criteria of R,MAE,and RMSE.Among the methods employed in this paper,random forest is the most accurate as it yields the best values for above criteria(R=0.841,MAE=0.592,and RMSE=0.760).The proposed method does not require to use ground penetrating radar test,which in turn reduce costs and work difficulty.Using machine learning methods instead of back-calculation improves the calculation process quality and accuracy.

关键词： transportation infrastructure flexible pavement structural number prediction Gaussian process regression M5P model tree random forest

Using occupancy models to determine mammalian responses to landscape changes

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Integrative Zoology 2009年第2期4卷 232-239页

作者： Jeremy M.NICHOLSON Frank T.VAN MANEN Department of Forestry Wildlifeand FisheriesUniversity of TennesseeKnoxvilleTennesseeUSA US Geological Survey Southern Appalachian Research BranchUniversity of TennesseeKnoxvilleTennesseeUSA

Determining impacts of anthropogenic landscape changes on wildlife populations is difficult.Besides the challengesDetermining impacts of anthropogenic landscape changes on wildlife populations is difficult.Besides the challenges of designing field studies to document conditions before and after landscape changes occur,assessment of popula-of designing field studies to document conditions before and after landscape changes occur,assessment of popula-tion responses(e.***.changes in population density)often provide poor inference because of sampling limitations.tion responses(e.***.changes in population density)often provide poor inference because of sampling limitations.Estimation of occupancy,however,only requires data on detection or non-detection of a species and might provideEstimation of occupancy,however,only requires data on detection or non-detection of a species and might provide better inference.To demonstrate the utility of occupancy models,we used data from an American black bear(Ursusbetter inference.To demonstrate the utility of occupancy models,we used data from an American black bear(Ursus americanus Pallas)population in North Carolina,USA to test our research hypothesis that documented declines inamericanus Pallas)population in North Carolina,USA to test our research hypothesis that documented declines in site occupancy of black bears would be greater near a new four-lane highway.We used multi-season occupancysite occupancy of black bears would be greater near a new four-lane highway.We used multi-season occupancy models to estimate site occupancy based on bear visitation to survey sites before and after completion of the newmodels to estimate site occupancy based on bear visitation to survey sites before and after completion of the new highway and as a function of distance to the highway.Site occupancy declined from 0.81 to 0.35 between the twohighway and as a function of distance to the highway.Site occupancy declined from 0.81 to 0.35 between the two study phases,but was not a function of distance t

关键词： landscape changes mammalian responses occupancy models transportation infrastructure Ursus americanus.

Spatial Structure Adjustment Strategies of the Coal Resource-Based Cities during the Mature Period: A Case Study of Pingdingshan

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Journal of Landscape Research 2017年第4期9卷 22-28页

作者： YU Yang ZHAO Pan QIAN Yuexi School of Architecture and Design Southwest Jiaotong University Country Garden

Coal cities are the main part of the resource-based cities in China, and the benign development of coal cities' spatial structure has a direct impact on these cities' future economic and social development, as well as the urban residents' welfare. Land use fragmentation is the most typical morphological characteristic of the coal city's spatial structure development. In this paper, Pingdingshan City of Henan Province in China is taken as an example. Through empirical analysis, the urban spatial structure development processes of a typical coal resource-based city in its mature period are illustrated, and the formation reasons and potential mechanism behind coal city land use fragmentation are explored, and the measurement method of land use fragmentation degree of the coal city is put forward. On the above basis, the appropriate adjustment strategies and methods aimed at the coal city spatial structure are found out and given. This study is a good guideline and reference for the spatial structure planning and land use planning of the coal city during the mature and declining period, which is of great help to the sustainable development and industrial structure transformation of the coal city. It also has certain reference significance for the coal city in the growth period.

关键词： Coal city Spatial structure Land use fragmentation transportation infrastructure

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跨境运输的出口效应研究