Journal of Transport Geography最新文献_第6页

Spatial temporal modelling of air traffic network evolution and resilience enhancement in response to the dynamic coupling of propagation outbreaks 空中交通网络演化的时空建模及响应传播爆发动态耦合的弹性增强

IF 5.7 2区工程技术 Q1 ECONOMICS

Journal of Transport Geography

Pub Date : 2025-02-01 DOI: 10.1016/j.jtrangeo.2025.104116

Yipeng Zhu, Kam K.H. Ng

COVID-19 has a great impact on the volume and frequency of air transportation. To minimise the transmission risk, civil aviation authorities imposed travel restrictions and led to changes of the global and regional air traffic network (ATN). Considering the potential for future similar propagable events that may challenge the operation of the ATN again, it is crucial to develop more efficient air route adjustment schemes (ARAS) to better respond to propagable outbreaks. This study first examines the development patterns of propagable events and constructs a spatial temporal evolution model under the coupling of event development and traffic flow. Based on the dynamic process of the spatial temporal evolution model, the study explores the resilience assessment method of the ATN throughout the entire cycle of events. This study proposes a methodological framework to intervene in the air route reduction and recovery of any two connected airport pairs based on the prioritised network centrality (PNC) during all rising and descending phases of propagatable outbreaks to achieve overall ATN network resilience enhancement, and the model is validated by the case under COVID-19 background. The numerical study shows that the adjustment of air route capacity has a significant impact on the control of the introduction of cases in the initial phase. However, there is no significant impact on controlling the risk of propagation if the destined regions face widespread local propagation. This explains that travel restriction and quarantine of the ATN do not contribute to controlling the local propagation of regions but can ameliorate the severity of the overall outbreak at the network level by affecting the spreading sequence across the network. To improve the network resilience in response to propagable outbreaks, The air route adjustment scheme considering prioritised network centrality (ARAS-PNC) approach can capitalise on the impact of network performance and outbreak progression and respond better at the network level with greater network efficiency and lower network-wide effective case rate.

新冠肺炎疫情对航空运输量和频率产生重大影响。为了尽量减少传播风险，民航当局实施了旅行限制，并导致全球和区域空中交通网络（ATN）的变化。考虑到未来可能发生的类似可传播事件可能再次挑战空中交通网络的运作，制定更有效的航线调整计划（ARAS）以更好地应对可传播的疫情至关重要。本研究首先考察了可传播事件的发展模式，构建了事件发展与交通流耦合下的时空演化模型。基于时空演化模型的动态过程，探索了整个事件周期的ATN恢复力评价方法。本研究提出了一种方法框架，在可传播性疫情的所有上升和下降阶段，基于优先网络中心性（PNC）干预任意两个连接机场对的航线减少和恢复，以实现整体ATN网络弹性增强，并通过COVID-19背景下的案例验证了该模型。数值研究表明，航路容量的调整对初始阶段引入病例的控制有重要影响。然而，如果目标区域面临广泛的局部传播，则对控制传播风险没有显著影响。这说明，对ATN的旅行限制和隔离并不能控制区域的局部传播，但可以通过影响网络上的传播顺序，在网络层面上减轻整体疫情的严重程度。考虑到优先网络中心（ARAS-PNC）方法的航线调整方案可以利用网络性能和爆发进程的影响，在网络层面上做出更好的响应，提高网络效率，降低网络范围内的有效病例率。

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引用次数: 0

Investigating scheduling of minibus taxis in South Africa's eventual electric paratransit 调查南非最终的电动公共交通中小巴出租车的调度

IF 5.7 2区工程技术 Q1 ECONOMICS

Journal of Transport Geography

Pub Date : 2025-02-01 DOI: 10.1016/j.jtrangeo.2024.104093

J. Wust , J. Bekker , M.J. Booysen

The predominant mode of public transport in South Africa originates from the informal sector, specifically “paratransit”. Vehicles carry up to 23 passengers and are still propelled by internal combustion engines. We investigate the feasibility of using electric vehicles without negating the loss of opportunities by drivers and owners. We propose that scheduling of the electric vehicles is one important cornerstone towards electrification. We developed a fast-executing heuristic scheduling algorithm that allows for multiple vehicle depots in the transport network; simultaneous electric and internal combustion engine vehicle deployment; determining the number of charging stations; partial charging; and scheduled charging with intermittent electricity supply. The scheduling algorithm achieves the minimum number of vehicles to execute the passenger demand in shorter total distances, outperforming current approaches. The algorithm demonstrated multi-objective optimisation by minimising the vehicles, the number of charging stations, and the average trip delays of a schedule.

南非的主要公共交通方式来自非正规部门，特别是 "准公共交通"。这些车辆最多可搭载 23 名乘客，仍由内燃机驱动。我们研究了使用电动汽车的可行性，同时不否认驾驶员和车主的机会损失。我们提出，电动车辆的调度是实现电气化的一个重要基石。我们开发了一种快速执行的启发式调度算法，允许在运输网络中设置多个车辆仓库；同时部署电动汽车和内燃机汽车；确定充电站的数量；部分充电；以及在间歇性供电的情况下进行计划充电。该调度算法能在更短的总距离内实现最少的车辆数量以满足乘客需求，优于目前的方法。该算法通过最小化车辆、充电站数量和计划的平均行程延迟，实现了多目标优化。

引用次数: 0

Liquefied natural gas trade network changes and its mechanism in the context of the Russia–Ukraine conflict 俄乌冲突背景下的液化天然气贸易网络变迁及其机制

IF 5.7 2区工程技术 Q1 ECONOMICS

Journal of Transport Geography

Pub Date : 2025-02-01 DOI: 10.1016/j.jtrangeo.2024.104101

Renrong Xiao , Pengjun Zhao , Kangzheng Huang , Tianyu Ma , Zhangyuan He , Caixia Zhang , Di Lyu

Liquefied natural gas (LNG), as a transitional fossil fuel, plays a vital role in the modern energy transition process. In the context of the Russia–Ukraine geopolitical conflict, studying the evolution pattern and mechanisms of LNG trade networks is crucial for maintaining global energy security, particularly for countries relying on LNG imports. The study is based on multisource big data from 2021 to 2022, including Automatic Identification System (AIS) data, Gdelt news data, and remote sensing satellite data. It utilizes complex network metrics and the temporal exponential random graph model (TERGM) method to analyze the evolution patterns and mechanisms of the global LNG trade network. The research findings indicate the following: (1) The Russia–Ukraine conflict has led to a significant increase in LNG imports by European countries. Many countries have opened temporary direct shipping routes, which has accelerated the decline in the average path length of the network and improved network efficiency. (2) The global LNG trade community trend has been strengthened by the Russia–Ukraine conflict. The number of members within the trading community in which the United States is located has increased, with some European countries moving into this community. (3) The reciprocal structural characteristics of the LNG trade network drive its development, and the expansion of the national port handling capacity ability also drives network growth. Conversely, large differences in geopolitical relations, culture, and levels of governance between countries can hinder global LNG network development. This study provides a theoretical basis and decision-making reference for energy security under major geopolitical conflicts.

液化天然气（LNG）作为一种过渡性化石燃料，在现代能源转型过程中起着至关重要的作用。在俄乌地缘政治冲突的背景下，研究LNG贸易网络的演变模式和机制对于维护全球能源安全至关重要，特别是对于依赖LNG进口的国家而言。该研究基于2021 - 2022年的多源大数据，包括自动识别系统（AIS）数据、Gdelt新闻数据和遥感卫星数据。利用复杂网络度量和时间指数随机图模型（TERGM）方法分析了全球LNG贸易网络的演化模式和机制。研究结果表明：(1)俄乌冲突导致欧洲国家LNG进口量显著增加。许多国家开设了临时直航航线，加速了网络平均路径长度的下降，提高了网络效率。(2)俄乌冲突强化了全球LNG贸易共同体趋势。美国所在的贸易共同体的成员数量有所增加，一些欧洲国家也加入了这个共同体。(3) LNG贸易网络的互惠结构特征推动其发展，国家港口装卸能力的扩大也推动网络增长。相反，各国之间地缘政治关系、文化和治理水平的巨大差异可能会阻碍全球LNG网络的发展。该研究为重大地缘政治冲突下的能源安全提供了理论依据和决策参考。

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引用次数: 0

A hierarchical spatial and temporal optimisation of the air-high speed rail intermodal network 空中高速铁路多式联运网络的分层时空优化

IF 5.7 2区工程技术 Q1 ECONOMICS

Journal of Transport Geography

Pub Date : 2025-02-01 DOI: 10.1016/j.jtrangeo.2024.104085

Mengyuan Lu , Edgar Jimenez Perez , Keith Mason , Max Z. Li

Spatial and temporal coordination of air-high speed rail (HSR) intermodal networks is important to reduce emission, improve service, enhance efficiency, and reduce costs in the provision of air-HSR integration. This paper constructs a hierarchical optimisation model that first considers a spatial scope to solve the problem of route allocation and frequency choice which minimises total environmental, operational and passenger cost with a Mixed-Integer Linear Programming (MILP) model, based on a demand estimation for passenger trips between city pairs. Then, the second hierarchical level of the model considers a temporal scope to maximise connection opportunities between the resulting air and HSR networks using time windows to adjust frequencies with a Prescriptive Integer Quadratic Programming (PIQP) model. An application to a network of 40 cities in mainland China with both air and HSR transport service shows that the total emission of the network can be reduced by 22 %. Comparative analyses show that optimising for passenger costs favours increased air travel on medium- and long-haul routes, while an emissions-focused approach encourages a shift toward HSR for short and medium distances. Sensitivity analyses on carbon pricing further highlight the potential of gradual price adjustments to incentivise lower-emission modes without requiring additional HSR infrastructure.

空高铁（HSR）多式联运网络的时空协调对于减少排放、改善服务、提高效率和降低成本具有重要意义。本文构建了一个分层优化模型，该模型首先考虑空间范围，利用混合整数线性规划（MILP）模型解决路线分配和频率选择问题，以最小化总环境，运营和乘客成本，基于城市对之间的乘客旅行需求估计。然后，该模型的第二个层次考虑了一个时间范围，以最大限度地提高由此产生的空气和高铁网络之间的连接机会，使用时间窗口通过规定性整数二次规划（PIQP）模型调整频率。对中国大陆40个城市的航空和高铁交通网络的应用表明，该网络的总排放量可以减少22%。对比分析表明，优化乘客成本有利于增加中长途航线的航空旅行，而以排放为重点的方法则鼓励中短途转向高铁。对碳定价的敏感性分析进一步强调了在不需要额外高铁基础设施的情况下，逐步调整价格以激励低排放模式的潜力。

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引用次数: 0

Changes in the distance of interprovincial coal transportation in China and its effect on carbon emissions

IF 5.7 2区工程技术 Q1 ECONOMICS

Journal of Transport Geography

Pub Date : 2025-02-01 DOI: 10.1016/j.jtrangeo.2025.104139

Yiqing Guo, Xiyan Mao, Jianing Wei, Mingyang Liu, Yiqi Chen, Jie Zhou

The spatial mismatch between coal production and consumption has led to long-distance coal transportation in China, which poses a challenge for balancing the trade-off between carbon reduction and energy security. In response, the spatial restructuring of long-distance transportation and how it contributes to carbon emissions are investigated. The Doubly Constrained Gravity Model is used to estimate the interprovincial coal transportation matrices from 1996 to 2019 and thus measure the coal transportation inflow and outflow radii of provinces and their corresponding carbon emissions. The results show that (1) the inflow radius supports a north-south division of provinces, with a pattern centered on Shanxi, Shaanxi, and Inner Mongolia. The outflow radius supports a coastal-inland division of provinces, with a pattern centered on the Yangtze River Delta region. Overall, the spatial extent of the coal supply in most provinces is shrinking, whereas the extent of demand is expanding. (2) Carbon emissions from coal transportation have increased with the westward shift in coal sources. The interprovincial transportation routes with the highest emissions display a radial pattern, shifting from monocentric to polycentric. (3) An increasing inflow radius suggests a demand-driven emission effect on provinces with advanced manufacturing bases, which have more emissions because of their demand gap. The decreasing outflow radius suggests a supply-driven emission effect. As provinces reduce their coal supply capacity, coal production bases should fill the demand gap, resulting in increased coal transportation emissions.

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引用次数: 0

Examining spatial patterns and economic interactions of logistics activities across three Texas metropolitan areas 考察得克萨斯州三个大都市区物流活动的空间模式和经济互动关系

IF 5.7 2区工程技术 Q1 ECONOMICS

Journal of Transport Geography

Pub Date : 2025-02-01 DOI: 10.1016/j.jtrangeo.2024.104079

Kailai Wang , Gino J. Lim , Bruce Race , Yunpeng (Jack) Zhang , Lu Gao , Fengxiang (George) Qiao

This study examines the spatial dynamics of warehouse location choice and the interplay between e-commerce, logistics businesses, and supply chain entities in three major urban areas in Texas: Houston, Austin, and Dallas-Fort Worth. We investigate the key factors influencing warehouse selection while accounting for spatial spillover effects (i.e., co-locational relationships), using data from 2003 to 2016. A major finding is that different types of business establishments exert distinct influences on warehouse location choice, varying across spatial scales. Notably, the effects from neighboring spatial units sometimes diverge from the direct impacts. For instance, manufacturing establishments have a positive direct influence on warehouse location choice in all three study areas, while neighboring manufacturing units show negative effects in Austin and Dallas. The analysis also highlights that when spatial interactions among e-commerce facilities, logistics businesses, and supply chain entities in adjacent units are accounted for, several transportation infrastructure and socioeconomic factors lose their statistical significance. The results provide valuable insights for policymakers, industry practitioners, and urban planners for informed warehousing facility allocation and development decisions in Texas metropolitan areas.

本研究考察了德克萨斯州休斯顿、奥斯汀和达拉斯-沃斯堡三个主要城市地区的仓储区位选择的空间动态，以及电子商务、物流企业和供应链实体之间的相互作用。本文利用2003年至2016年的数据，在考虑空间溢出效应（即共址关系）的情况下，研究了影响仓库选择的关键因素。主要发现是不同类型的商业机构对仓库选址的影响不同，在不同的空间尺度上存在差异。值得注意的是，邻近空间单元的影响有时会偏离直接影响。例如，在所有三个研究区域中，制造企业对仓库选址有直接的积极影响，而邻近的制造企业在奥斯汀和达拉斯则表现出负面影响。分析还强调，当考虑到相邻单元中电子商务设施、物流企业和供应链实体之间的空间相互作用时，一些交通基础设施和社会经济因素失去了统计意义。研究结果为决策者、行业从业者和城市规划者提供了有价值的见解，为德克萨斯州大都市地区的仓储设施配置和发展决策提供了依据。

{"title":"Examining spatial patterns and economic interactions of logistics activities across three Texas metropolitan areas","authors":"Kailai Wang , Gino J. Lim , Bruce Race , Yunpeng (Jack) Zhang , Lu Gao , Fengxiang (George) Qiao","doi":"10.1016/j.jtrangeo.2024.104079","DOIUrl":"10.1016/j.jtrangeo.2024.104079","url":null,"abstract":"<div><div>This study examines the spatial dynamics of warehouse location choice and the interplay between e-commerce, logistics businesses, and supply chain entities in three major urban areas in Texas: Houston, Austin, and Dallas-Fort Worth. We investigate the key factors influencing warehouse selection while accounting for spatial spillover effects (i.e., co-locational relationships), using data from 2003 to 2016. A major finding is that different types of business establishments exert distinct influences on warehouse location choice, varying across spatial scales. Notably, the effects from neighboring spatial units sometimes diverge from the direct impacts. For instance, manufacturing establishments have a positive direct influence on warehouse location choice in all three study areas, while neighboring manufacturing units show negative effects in Austin and Dallas. The analysis also highlights that when spatial interactions among e-commerce facilities, logistics businesses, and supply chain entities in adjacent units are accounted for, several transportation infrastructure and socioeconomic factors lose their statistical significance. The results provide valuable insights for policymakers, industry practitioners, and urban planners for informed warehousing facility allocation and development decisions in Texas metropolitan areas.</div></div>","PeriodicalId":48413,"journal":{"name":"Journal of Transport Geography","volume":"123 ","pages":"Article 104079"},"PeriodicalIF":5.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142823257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Revealing the relationship between 2D/3D built environment and jobs-housing separation coupling nonlinearity and spatial nonstationarity 揭示二维/三维建筑环境与工房分离耦合非线性和空间非平稳性的关系

IF 5.7 2区工程技术 Q1 ECONOMICS

Journal of Transport Geography

Pub Date : 2025-02-01 DOI: 10.1016/j.jtrangeo.2025.104112

Rui An , Zhaomin Tong , Bo Tan , Qiangqiang Xiong , Yuanyuan Luo , Yaolin Liu , Linchuan Yang , Xiping Yang

Transit-oriented development encourages metropolises to alleviate jobs-housing separation (JHS) by optimizing the built environment (BE). Researchers have found that BE exerts different effects on home- and work-oriented JHS, but their statistical models ignored the nonlinear and spatially nonstationary features of the relationship. In this study, we collected location-based service data to identify commuters and aggregated them to 188 metro station areas from a home or work orientation. We then defined a parameter β to measure JHS following the distance decay law, added three-dimensional (3D) indicators to the “Node-Place-Function” system to describe the BE, and applied the LightGBM-SHAP after multi-model comparison to learn and visualize their complex relationships. We identified three types of BE variables: 1) exhibiting important effects only on one orientation, 2) exhibiting similar effects on two orientations, and 3) exhibiting opposite effects on two orientations. Particularly, we designed a new visualization framework for SHAP that synergizes nonlinear dependency with the spatial distribution, which can provide threshold targets and spatial ranges for policy regulation simultaneously. For example, Hanyang should increase its shared bicycle density to 900 vehicles/km² to meet the travel needs of residents, while Jianghan should provide affordable housing (<180,00 yuan/m²) to meet the housing needs of workers. Our findings aim to encourage planners to consider nonlinear determined thresholds in regulating actual spaces, which can directly support the refined urban management under limited resource condition.

以交通为导向的发展鼓励大都市通过优化建筑环境来缓解职住分离（JHS）。研究发现，BE对家庭取向和工作取向的JHS有不同的影响，但他们的统计模型忽略了这种关系的非线性和空间非平稳特征。在这项研究中，我们收集了基于位置的服务数据来识别通勤者，并将他们从家庭或工作方向汇总到188个地铁站区域。根据距离衰减规律定义了测量JHS的参数β，在“节点-位置-功能”体系中加入三维（3D）指标来描述BE，并应用多模型比较后的LightGBM-SHAP来学习和可视化它们之间的复杂关系。我们确定了三种类型的BE变量：1)只在一个方向上表现出重要的影响，2)在两个方向上表现出相似的影响，以及3)在两个方向上表现出相反的影响。特别地，我们设计了一个新的SHAP可视化框架，该框架将非线性依赖与空间分布协同起来，可以同时为政策调控提供阈值目标和空间范围。例如，汉阳应将其共享自行车密度增加到900辆/平方公里，以满足居民的出行需求，而江汉应提供经济适用房（<；18万元/平方米），以满足工人的住房需求。研究结果旨在鼓励规划者在调节实际空间时考虑非线性确定阈值，从而直接支持有限资源条件下的精细化城市管理。

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引用次数: 0

Examining the nonlinear and interactive effects of built environment characteristics on travel satisfaction 考察建筑环境特征对旅游满意度的非线性交互效应

IF 5.7 2区工程技术 Q1 ECONOMICS

Journal of Transport Geography

Pub Date : 2025-02-01 DOI: 10.1016/j.jtrangeo.2025.104111

Wei Dong , Naidi Wang , Yu Dong , Jason Cao

Previous studies often overlook nonlinear relationships between built environment characteristics and travel satisfaction, and few examine the interaction effects of these characteristics on travel satisfaction. Using gradient boosting decision trees on a dataset of 1167 respondents collected from Harbin, China, in 2021, we estimated the nonlinear and interaction effects of built environment characteristics on travel satisfaction. We found that perceived built environment attributes, such as infrastructure and safety for walking, aesthetics, physical barriers, and land-use mix, are key predictors of residents' travel satisfaction, and their relationships are mostly nonlinear. Furthermore, built environment characteristics exhibit three patterns of interaction effects on travel satisfaction: compensation, suppression, and reinforcement. These findings can help planners better assess the costs and benefits of environmental improvement plans.

以往的研究往往忽视了建筑环境特征与旅游满意度之间的非线性关系，很少研究这些特征对旅游满意度的交互作用。利用梯度增强决策树对2021年收集自中国哈尔滨的1167名受访者的数据集进行分析，我们估计了建筑环境特征对旅行满意度的非线性和交互效应。我们发现，感知的建筑环境属性，如基础设施和步行安全、美学、物理障碍和土地利用组合，是居民旅行满意度的关键预测因素，它们之间的关系大多是非线性的。此外，建成环境特征对旅游满意度的交互影响表现为补偿、抑制和强化三种模式。这些发现可以帮助规划者更好地评估环境改善计划的成本和收益。

引用次数: 0

E-taxi drivers' charging behavior: Effects of the built environment, temporal factors, and ridership

IF 5.7 2区工程技术 Q1 ECONOMICS

Journal of Transport Geography

Pub Date : 2025-02-01 DOI: 10.1016/j.jtrangeo.2025.104118

Meng Liu, Sylvia Y. He

Transport electrification is a critical step toward energy conservation and emission reduction. However, the central challenge for electrifying transportation remains insufficient and unsuitable configurations of public charging infrastructure. Understanding the charging behavior of electric taxi (e-taxi) drivers from an urban planning perspective is important for planning public charging infrastructure. In light of this, our study extracts e-taxi drivers' charging behavior from the large-scale GPS trajectory data of a fully electrified taxi fleet, considers two major concerns of e-taxi drivers (charging and ridership), and examines the specific nonlinear, threshold, and interaction effects of the built environment, temporal factors, and taxi ridership on e-taxi drivers' usage of charging stations. The results indicate that the built environment represents the largest contributing factor, followed by temporal factors and taxi ridership. Meanwhile, the three variables of interest demonstrate significant nonlinear, threshold, and interactive effects on charging behavior. Research findings from this study can provide insights for future research and offer quantitative support for administrators and planners wanting to deploy appropriate and precise planning strategies that incorporate the charging preferences of e-taxi drivers to improve the effectiveness of spatial planning for public charging stations.

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引用次数: 0

Geopolitical uncertainty and shipping stock returns: An event study of the Israel-Hamas conflict

IF 5.7 2区工程技术 Q1 ECONOMICS

Journal of Transport Geography

Pub Date : 2025-02-01 DOI: 10.1016/j.jtrangeo.2025.104122

Mutaju Isaack Marobhe , Jonathan Mukiza Kansheba , Ziaul Haque Munim

This article investigates the impact of the Israeli-Hamas conflict on maritime sector stocks using an event study approach, highlighting the sector's vulnerability during crises. Analyzing 32 companies across container, tanker, and dry bulk sub-sectors, we employ the Fama and French three-factor model to assess how maritime stocks respond to conflict-related news. Our findings reveal predominantly adverse stock reactions, particularly in the container and tanker segments, with the dry bulk sub-sector less affected. Notably, container shipping stocks showed significant declines following missile attacks on cargo vessels. Conversely, the market response to positive news, such as a ceasefire between Israel and Hamas, was muted, suggesting that good news impacts trading behaviour less than bad news. This study underscores the importance of monitoring news during major crises for theoretical and practical implications in the maritime industry, as it significantly influences stock performance.

引用次数: 0