首页 > 最新文献

Research in Transportation Economics最新文献

英文 中文
Bi-objective set covering location model for two-tier shopping centers based on two-level consumer demand 基于两层消费者需求的双层购物中心双目标集覆盖选址模型
IF 3.4 3区 工程技术 Q1 ECONOMICS Pub Date : 2025-12-19 DOI: 10.1016/j.retrec.2025.101696
Fei Wang, Jianyu Chen, Houlong Zhang, Ke Wang
The strategic location of shopping centers is crucial to the economic interests of commercial investors and significantly influences urban residents' welfare and the spatial configuration of urban commercial systems. This study applies an optimization model to the shopping center location problem by constructing a bi-objective set-covering location model for two-tier shopping centers based on two -level consumer demand. The model simultaneously considers the interests of both investors and consumers, aiming to trade-off facility construction costs and consumer travel costs with limited capacity constraints. To efficiently solve the problem, an improved NSGA-II algorithm incorporating a chromosome-archiving mechanism is proposed, and its performance is validated against a reference frontier generated by the ε-constraint method. Empirical analysis based on Xi'an's metro network (163 stations) demonstrates the cost ratio parameter (α) and service radius ratio parameter (γ) exhibit high sensitivity, whereas the capacity ratio parameter (β) has a relatively minor effect on the optimization outcomes.
购物中心的战略区位关系到商业投资者的经济利益,对城市居民的福利和城市商业系统的空间配置具有重要影响。本文将优化模型应用于购物中心选址问题,构建了基于两层消费者需求的双层购物中心双目标集覆盖选址模型。该模型同时考虑投资者和消费者的利益,旨在在有限容量约束下权衡设施建设成本和消费者出行成本。为了有效地解决这一问题,提出了一种引入染色体存档机制的改进NSGA-II算法,并通过ε-约束法生成的参考边界对其性能进行了验证。基于西安地铁网络(163个站点)的实证分析表明,成本比参数(α)和服务半径比参数(γ)对优化结果具有较高的敏感性,而容量比参数(β)对优化结果的影响较小。
{"title":"Bi-objective set covering location model for two-tier shopping centers based on two-level consumer demand","authors":"Fei Wang,&nbsp;Jianyu Chen,&nbsp;Houlong Zhang,&nbsp;Ke Wang","doi":"10.1016/j.retrec.2025.101696","DOIUrl":"10.1016/j.retrec.2025.101696","url":null,"abstract":"<div><div>The strategic location of shopping centers is crucial to the economic interests of commercial investors and significantly influences urban residents' welfare and the spatial configuration of urban commercial systems. This study applies an optimization model to the shopping center location problem by constructing a bi-objective set-covering location model for two-tier shopping centers based on two -level consumer demand. The model simultaneously considers the interests of both investors and consumers, aiming to trade-off facility construction costs and consumer travel costs with limited capacity constraints. To efficiently solve the problem, an improved <em>NSGA-II</em> algorithm incorporating a chromosome-archiving mechanism is proposed, and its performance is validated against a reference frontier generated by the <span><math><mrow><mi>ε</mi></mrow></math></span>-constraint method. Empirical analysis based on Xi'an's metro network (163 stations) demonstrates the cost ratio parameter (<span><math><mrow><mi>α</mi></mrow></math></span>) and service radius ratio parameter (<span><math><mrow><mi>γ</mi></mrow></math></span>) exhibit high sensitivity, whereas the capacity ratio parameter (<span><math><mrow><mi>β</mi></mrow></math></span>) has a relatively minor effect on the optimization outcomes.</div></div>","PeriodicalId":47810,"journal":{"name":"Research in Transportation Economics","volume":"115 ","pages":"Article 101696"},"PeriodicalIF":3.4,"publicationDate":"2025-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145790450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Examining the role of travel wellbeing on mode choice behavior in a developing country context 在发展中国家背景下考察旅行幸福感对模式选择行为的作用
IF 3.4 3区 工程技术 Q1 ECONOMICS Pub Date : 2025-12-17 DOI: 10.1016/j.retrec.2025.101694
Rimpi Baro, K.V. Krishna Rao, Nagendra R. Velaga
Metropolitan authorities have started developing metro systems to promote sustainable transportation in urban agglomerations, indicating a significant change in the modal share in the future. Previous research indicates that travel wellbeing (TWB) substantially impacts mode choice behavior. This study developed a novel TWB index from structural equation modeling of TWB and Quality of Life framework and examined the association of TWB alongside travel attributes with mode choice behavior using a combined revealed-stated preference (RP-SP) dataset of 1393 commuters in the Mumbai Metropolitan Region, India. A set of RP, SP, and two joint RP-SP mixed logit models (the latter with the decomposition of random coefficients) was developed to identify the role of TWB and travel attributes on mode choice behavior and to examine systematic preference heterogeneity for travel attributes across socio-economic groups. Results indicated that TWB positively influenced all the modes’ utilities, while travel time, cost, waiting time, transfers, and discomfort negatively influenced their utilities. Systematic heterogeneity results indicated that low-income and older commuters displayed higher sensitivity to travel costs, while males and younger commuters showed more sensitivity to transfers and waiting time, and low-income individuals were more sensitive to transfers. The implications for policy measures are discussed accordingly.
都市当局已经开始开发地铁系统,以促进城市群的可持续交通,这表明未来交通方式的份额将发生重大变化。以往的研究表明,旅行幸福感对模式选择行为有显著影响。本研究利用印度孟买大都会区1393名通勤者的联合显示-陈述偏好(RP-SP)数据集,从TWB和生活质量框架的结构方程建模中开发了一个新的TWB指数,并研究了TWB与出行属性与模式选择行为之间的关系。本文建立了RP、SP和两个联合RP-SP混合logit模型(后者具有随机系数分解),以确定TWB和旅行属性对模式选择行为的作用,并检验不同社会经济群体对旅行属性的系统偏好异质性。结果表明,出行效率对各出行方式的效用均有正向影响,而出行时间、成本、等待时间、换乘次数和不适程度对其效用均有负向影响。系统异质性结果表明,低收入和老年通勤者对出行成本的敏感性更高,男性和年轻通勤者对换乘和等待时间的敏感性更高,低收入个体对换乘的敏感性更高。对政策措施的影响进行了相应的讨论。
{"title":"Examining the role of travel wellbeing on mode choice behavior in a developing country context","authors":"Rimpi Baro,&nbsp;K.V. Krishna Rao,&nbsp;Nagendra R. Velaga","doi":"10.1016/j.retrec.2025.101694","DOIUrl":"10.1016/j.retrec.2025.101694","url":null,"abstract":"<div><div>Metropolitan authorities have started developing metro systems to promote sustainable transportation in urban agglomerations, indicating a significant change in the modal share in the future. Previous research indicates that travel wellbeing (TWB) substantially impacts mode choice behavior. This study developed a novel TWB index from structural equation modeling of TWB and Quality of Life framework and examined the association of TWB alongside travel attributes with mode choice behavior using a combined revealed-stated preference (RP-SP) dataset of 1393 commuters in the Mumbai Metropolitan Region, India. A set of RP, SP, and two joint RP-SP mixed logit models (the latter with the decomposition of random coefficients) was developed to identify the role of TWB and travel attributes on mode choice behavior and to examine systematic preference heterogeneity for travel attributes across socio-economic groups. Results indicated that TWB positively influenced all the modes’ utilities, while travel time, cost, waiting time, transfers, and discomfort negatively influenced their utilities. Systematic heterogeneity results indicated that low-income and older commuters displayed higher sensitivity to travel costs, while males and younger commuters showed more sensitivity to transfers and waiting time, and low-income individuals were more sensitive to transfers. The implications for policy measures are discussed accordingly.</div></div>","PeriodicalId":47810,"journal":{"name":"Research in Transportation Economics","volume":"115 ","pages":"Article 101694"},"PeriodicalIF":3.4,"publicationDate":"2025-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145790451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Measuring expressway accessibility of enterprise based on an improved NN-2SFCA method in rural area 基于改进NN-2SFCA方法的农村地区企业高速公路可达性测度
IF 3.4 3区 工程技术 Q1 ECONOMICS Pub Date : 2025-12-11 DOI: 10.1016/j.retrec.2025.101679
Rui Cao , Wu Li , Fang Chen , Xiaoqing Zong , Xiaofeng Ji
Equitable expressway accessibility is critical for revitalizing rural industries, yet traditional accessibility metrics often fail to capture the unique logistical needs of enterprises in complex rural environments. The widely used Two-Step Floating Catchment Area (2SFCA) method is limited in rural applications due to its reliance on fixed catchment areas and population-based demand weighting, which misrepresent actual travel conditions and overlook industry-specific requirements. To address these gaps, we propose an improved Nearest-Neighbor 2SFCA (NN-2SFCA) method that incorporates three key innovations: (1) network-based travel time derived from web mapping API instead of Euclidean distance, (2) a data-driven dynamic nearest-neighbor search to adaptively determine service ranges, and (3) demand weighting based on enterprise registered capital to reflect industrial scale rather than population distribution. Applied in Yunnan Province, China, results reveal severe inequality: 73 % of expressway services concentrate in only 10 % of townships, showing a clear core-periphery pattern. Significant sectoral disparities exist, with tourism having the poorest accessibility. The study offers actionable insights for optimizing resource allocation under the Rural Revitalization Strategy and presents a transferable framework for accessibility research in similar contexts.
公平的高速公路可达性对于振兴农村产业至关重要,但传统的可达性指标往往无法捕捉复杂农村环境中企业的独特物流需求。广泛使用的两步浮动集水区(2SFCA)方法在农村的应用受到限制,因为它依赖于固定的集水区和以人口为基础的需求加权,这错误地反映了实际的旅行条件,忽视了行业的具体要求。为了解决这些差距,我们提出了一种改进的最近邻2SFCA (NN-2SFCA)方法,该方法结合了三个关键创新:(1)基于网络的旅行时间,而不是欧几里得距离,(2)数据驱动的动态最近邻搜索,以自适应确定服务范围;(3)基于企业注册资本的需求加权,以反映产业规模,而不是人口分布。应用于中国云南省,结果显示出严重的不平等:73%的高速公路服务集中在10%的乡镇,呈现出明显的核心-边缘格局。存在显著的部门差异,旅游业的可达性最差。该研究为乡村振兴战略下的资源优化配置提供了可操作的见解,并为类似背景下的可达性研究提供了可转移的框架。
{"title":"Measuring expressway accessibility of enterprise based on an improved NN-2SFCA method in rural area","authors":"Rui Cao ,&nbsp;Wu Li ,&nbsp;Fang Chen ,&nbsp;Xiaoqing Zong ,&nbsp;Xiaofeng Ji","doi":"10.1016/j.retrec.2025.101679","DOIUrl":"10.1016/j.retrec.2025.101679","url":null,"abstract":"<div><div>Equitable expressway accessibility is critical for revitalizing rural industries, yet traditional accessibility metrics often fail to capture the unique logistical needs of enterprises in complex rural environments. The widely used Two-Step Floating Catchment Area (2SFCA) method is limited in rural applications due to its reliance on fixed catchment areas and population-based demand weighting, which misrepresent actual travel conditions and overlook industry-specific requirements. To address these gaps, we propose an improved Nearest-Neighbor 2SFCA (NN-2SFCA) method that incorporates three key innovations: (1) network-based travel time derived from web mapping API instead of Euclidean distance, (2) a data-driven dynamic nearest-neighbor search to adaptively determine service ranges, and (3) demand weighting based on enterprise registered capital to reflect industrial scale rather than population distribution. Applied in Yunnan Province, China, results reveal severe inequality: 73 % of expressway services concentrate in only 10 % of townships, showing a clear core-periphery pattern. Significant sectoral disparities exist, with tourism having the poorest accessibility. The study offers actionable insights for optimizing resource allocation under the Rural Revitalization Strategy and presents a transferable framework for accessibility research in similar contexts.</div></div>","PeriodicalId":47810,"journal":{"name":"Research in Transportation Economics","volume":"115 ","pages":"Article 101679"},"PeriodicalIF":3.4,"publicationDate":"2025-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145737237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Where are we headed with research, training and practice in land passenger transport governance in Africa? 我们在非洲陆路客运治理方面的研究、培训和实践将走向何方?
IF 3.4 3区 工程技术 Q1 ECONOMICS Pub Date : 2025-12-07 DOI: 10.1016/j.retrec.2025.101673
Lydia Akoth Midimo , Marianne Vanderschuren , Gladys Moraa Nyachieo
This paper, based on a scoping review of selected studies, examines the status of land passenger transport governance research, training and practice in Africa. The findings of this paper are outlined as follows. Transport governance research in Africa is in a nascent stage with respect to theoretical, methodological and empirical advancements. While relevant theories and methods are utilised, the contextualised reformulation of these theories and methods, based on the African reality is, however, not evident. A sustained effort by prolific scholars who pursue an engaging research agenda or expand on initial transport governance research is not also evident. Hence, there is a tendency for one-off empirical studies and not a stream of related studies by the same researcher on a set of topics. An exploratory analysis of courses in 26 African universities shows that there was no course dedicated solely to transport governance as a standalone course. Several practices of transport governance like public participation, performance monitoring and accountability exist but the extent to which they are adhered to, need to be assessed.
本文在对选定研究进行范围审查的基础上,审查了非洲陆地客运治理研究、培训和实践的现状。本文的研究结果概述如下。在理论、方法和经验方面,非洲的运输管理研究处于初级阶段。虽然利用了相关的理论和方法,但根据非洲实际情况对这些理论和方法进行背景化的重新制定并不明显。追求引人入胜的研究议程或扩展初始交通治理研究的多产学者的持续努力也不明显。因此,有一种倾向是一次性的实证研究,而不是同一研究人员对一系列主题的一系列相关研究。对26所非洲大学的课程进行的探索性分析表明,没有专门将运输管理作为一门独立的课程。目前存在一些交通管理的做法,如公众参与、绩效监测和问责制,但需要评估这些做法得到遵守的程度。
{"title":"Where are we headed with research, training and practice in land passenger transport governance in Africa?","authors":"Lydia Akoth Midimo ,&nbsp;Marianne Vanderschuren ,&nbsp;Gladys Moraa Nyachieo","doi":"10.1016/j.retrec.2025.101673","DOIUrl":"10.1016/j.retrec.2025.101673","url":null,"abstract":"<div><div>This paper, based on a scoping review of selected studies, examines the status of land passenger transport governance research, training and practice in Africa. The findings of this paper are outlined as follows. Transport governance research in Africa is in a nascent stage with respect to theoretical, methodological and empirical advancements. While relevant theories and methods are utilised, the contextualised reformulation of these theories and methods, based on the African reality is, however, not evident. A sustained effort by prolific scholars who pursue an engaging research agenda or expand on initial transport governance research is not also evident. Hence, there is a tendency for one-off empirical studies and not a stream of related studies by the same researcher on a set of topics. An exploratory analysis of courses in 26 African universities shows that there was no course dedicated solely to transport governance as a standalone course. Several practices of transport governance like public participation, performance monitoring and accountability exist but the extent to which they are adhered to, need to be assessed.</div></div>","PeriodicalId":47810,"journal":{"name":"Research in Transportation Economics","volume":"115 ","pages":"Article 101673"},"PeriodicalIF":3.4,"publicationDate":"2025-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145737306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Environmental and social assessment of transport and cooling systems in last-mile cold-chain vaccine distribution: A case study in Flanders, Belgium 最后一英里冷链疫苗配送中运输和冷却系统的环境和社会评估:比利时法兰德斯的案例研究
IF 3.4 3区 工程技术 Q1 ECONOMICS Pub Date : 2025-12-05 DOI: 10.1016/j.retrec.2025.101693
Rafael Arevalo-Ascanio , Elena Prozorova , Annelies De Meyer , Roel Gevaers , Ruben Guisson , Wouter Dewulf
Although the discussions on the sustainability of transport and logistics have been a focus of research in recent years, the impacts of the choice of cooling systems within cold chains have not received the same attention. This paper assesses the environmental and social implications of cold-chain vaccine distribution in the last mile, in terms of CO2 emissions from cooling systems and transport, as well as the external costs of transport. The last-mile vaccine distribution is modelled using a strategic approach to perform multi-scenario analyses. An application within the Flemish immunisation programme in Belgium compares the performance of active (ACS) and passive (PCS) cooling systems during last-mile vaccine distribution. The CO2 emissions results indicate that PCS are the most efficient for multi-stop distribution, while ACS emissions rise sharply with more stops along the route. An illustrative example explores the potential environmental benefits of using cargo bikes and PCS for deliveries in the densest regions. Regarding social impacts, the urban distribution of vaccines presents the highest effects on the external costs categories of accidents, air pollution, and congestion. The findings are relevant to cold-chain planning for logistics operators, as the efficient implementation of cooling systems can enhance all dimensions of sustainability.
尽管近年来关于运输和物流可持续性的讨论一直是研究的焦点,但冷链中冷却系统选择的影响并没有得到同样的关注。本文从冷却系统和运输产生的二氧化碳排放以及运输的外部成本的角度,评估了冷链疫苗在最后一英里配送的环境和社会影响。最后一英里疫苗分发采用战略方法进行多情景分析。在比利时的佛兰德免疫项目中,一项应用比较了最后一英里疫苗分发过程中主动(ACS)和被动(PCS)冷却系统的性能。CO2排放结果表明,多站点分布时,高速公路的CO2排放效率最高,而高速公路的CO2排放随着站点数量的增加而急剧上升。一个说明性的例子探讨了在人口最密集的地区使用货运自行车和个人电脑进行交付的潜在环境效益。在社会影响方面,在城市分配疫苗对事故、空气污染和拥堵等外部成本类别的影响最大。研究结果与物流运营商的冷链规划有关,因为冷却系统的有效实施可以提高可持续性的各个方面。
{"title":"Environmental and social assessment of transport and cooling systems in last-mile cold-chain vaccine distribution: A case study in Flanders, Belgium","authors":"Rafael Arevalo-Ascanio ,&nbsp;Elena Prozorova ,&nbsp;Annelies De Meyer ,&nbsp;Roel Gevaers ,&nbsp;Ruben Guisson ,&nbsp;Wouter Dewulf","doi":"10.1016/j.retrec.2025.101693","DOIUrl":"10.1016/j.retrec.2025.101693","url":null,"abstract":"<div><div>Although the discussions on the sustainability of transport and logistics have been a focus of research in recent years, the impacts of the choice of cooling systems within cold chains have not received the same attention. This paper assesses the environmental and social implications of cold-chain vaccine distribution in the last mile, in terms of CO<sub>2</sub> emissions from cooling systems and transport, as well as the external costs of transport. The last-mile vaccine distribution is modelled using a strategic approach to perform multi-scenario analyses. An application within the Flemish immunisation programme in Belgium compares the performance of active (ACS) and passive (PCS) cooling systems during last-mile vaccine distribution. The CO<sub>2</sub> emissions results indicate that PCS are the most efficient for multi-stop distribution, while ACS emissions rise sharply with more stops along the route. An illustrative example explores the potential environmental benefits of using cargo bikes and PCS for deliveries in the densest regions. Regarding social impacts, the urban distribution of vaccines presents the highest effects on the external costs categories of accidents, air pollution, and congestion. The findings are relevant to cold-chain planning for logistics operators, as the efficient implementation of cooling systems can enhance all dimensions of sustainability.</div></div>","PeriodicalId":47810,"journal":{"name":"Research in Transportation Economics","volume":"115 ","pages":"Article 101693"},"PeriodicalIF":3.4,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145685060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Towards a revitalization of passenger rail services in South African cities: Lessons from international institutional reforms 振兴南非城市客运铁路服务:来自国际机构改革的经验教训
IF 3.4 3区 工程技术 Q1 ECONOMICS Pub Date : 2025-12-03 DOI: 10.1016/j.retrec.2025.101692
Roger Behrens , Pieter Onderwater , Kavita Shah
For over a century passenger rail services in South Africa have been provided by one or other form of national public monopoly. Over the past decade these services have been in steep decline, effectively collapsing when COVID-19 lockdown regulations were imposed. Current policy attention is focussed on reviving operations and installing an institutional structure capable of providing ‘safe, reliable, effective, efficient and fully integrated’ rail transport. Key to this is a commitment to devolve functions to capable lower spheres of government. The aim of this paper is to explore lessons from international experiences in institutional reforms centred around devolution. To qualify for inclusion, cases needed to have experienced a deliberate policy action to devolve passenger rail functions from a national to a lower sphere of government. A literature search revealed 11 such cases. Case reviews focussed on: the circumstances of the devolution; any associated vertical separation and privatisation; impacts; and any subsequent policy reversals. Key lessons included: devolved operations should be accompanied by financial resourcing; vertical separation requires independent institutions capable of adjudicating competing interests; private sector participation in operations is less risky than private infrastructure ownership; and the devolution of both train and bus services can enhance modal integration.
一个多世纪以来,南非的客运铁路服务一直由一种或另一种形式的国家公共垄断提供。在过去十年中,这些服务急剧下降,在实施COVID-19封锁规定时实际上已经崩溃。目前的政策重点是恢复运营和建立一个能够提供“安全、可靠、有效、高效和完全一体化”铁路运输的体制结构。这方面的关键是承诺将职能下放给有能力的较低政府部门。本文旨在探讨以权力下放为中心的机构改革的国际经验教训。为了符合纳入的条件,案例需要经过深思熟虑的政策行动,将客运铁路职能从国家政府下放到较低的政府领域。文献检索显示了11个这样的案例。案例审查侧重于:权力下放的情况;任何相关的纵向分离和私有化;影响;以及随后的政策逆转。主要经验包括:下放的业务应同时提供财政资源;纵向分离要求有能力裁决相互竞争的利益的独立机构;私营部门参与运营的风险低于私人拥有基础设施的风险;火车和公共汽车服务的下放可以增强模式一体化。
{"title":"Towards a revitalization of passenger rail services in South African cities: Lessons from international institutional reforms","authors":"Roger Behrens ,&nbsp;Pieter Onderwater ,&nbsp;Kavita Shah","doi":"10.1016/j.retrec.2025.101692","DOIUrl":"10.1016/j.retrec.2025.101692","url":null,"abstract":"<div><div>For over a century passenger rail services in South Africa have been provided by one or other form of national public monopoly. Over the past decade these services have been in steep decline, effectively collapsing when COVID-19 lockdown regulations were imposed. Current policy attention is focussed on reviving operations and installing an institutional structure capable of providing ‘safe, reliable, effective, efficient and fully integrated’ rail transport. Key to this is a commitment to devolve functions to capable lower spheres of government. The aim of this paper is to explore lessons from international experiences in institutional reforms centred around devolution. To qualify for inclusion, cases needed to have experienced a deliberate policy action to devolve passenger rail functions from a national to a lower sphere of government. A literature search revealed 11 such cases. Case reviews focussed on: the circumstances of the devolution; any associated vertical separation and privatisation; impacts; and any subsequent policy reversals. Key lessons included: devolved operations should be accompanied by financial resourcing; vertical separation requires independent institutions capable of adjudicating competing interests; private sector participation in operations is less risky than private infrastructure ownership; and the devolution of both train and bus services can enhance modal integration.</div></div>","PeriodicalId":47810,"journal":{"name":"Research in Transportation Economics","volume":"115 ","pages":"Article 101692"},"PeriodicalIF":3.4,"publicationDate":"2025-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145685062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Security perceptions in ride-sharing services: Influencing factors and effective solutions 拼车服务中的安全认知:影响因素及有效解决方案
IF 3.4 3区 工程技术 Q1 ECONOMICS Pub Date : 2025-12-01 DOI: 10.1016/j.retrec.2025.101689
Marzieh Afsari, Salar Salehi, Lory Michelle Bresciani Miristice, Guido Gentile
Ride-sharing offers flexibility and cost-efficiency, but presents security challenges, especially in developing countries. In Iran, a country with a longstanding tradition of ride-sharing, this study investigates how users perceive security, and which measures they consider effective. We collected survey data from 270 participants and applied factor analysis to identify latent dimensions influencing perceived security, including experiences, social influences, family norm, and religion. These factors and demographics were included in an ordered logit model to assess their impact on perceived security. Results show gender is the strongest predictor, with women reporting lower security than men. However, men also feel insecure, especially at night or outside urban areas. These findings underscore the need to combine gender-neutral and gender-sensitive strategies to ensure fairness while addressing the diverse security needs. Other significant variables include age, past harassment experience, media exposure, and family norms. Those with very low perceived security are less responsive to interventions than those with moderate or higher security. We also evaluated user preferences for a range of proposed measures. Cameras and tracking received strong support, with many expressing a willingness to pay for increased security. Security apps showed promise, but users stressed the need for better privacy, preventive functions, and real-time response.
拼车提供了灵活性和成本效益,但也带来了安全挑战,尤其是在发展中国家。在伊朗这个有着长期共享出行传统的国家,这项研究调查了用户如何看待安全,以及他们认为哪些措施有效。我们收集了270名参与者的调查数据,并运用因子分析找出影响安全感感知的潜在维度,包括经历、社会影响、家庭规范和宗教。这些因素和人口统计数据被包括在一个有序logit模型中,以评估它们对感知安全的影响。结果显示,性别是最有力的预测因素,女性报告的安全感低于男性。然而,男性也会感到不安全,尤其是在晚上或城市以外的地方。这些调查结果强调需要将性别中立和性别敏感战略结合起来,以确保公平,同时满足各种安全需求。其他重要的变量包括年龄、过去的骚扰经历、媒体曝光和家庭规范。安全感非常低的人对干预的反应要低于安全感中等或更高的人。我们还评估了用户对一系列拟议措施的偏好。摄像头和跟踪得到了强烈支持,许多人表示愿意为加强安全付费。安全应用程序显示出了希望,但用户强调需要更好的隐私、预防功能和实时响应。
{"title":"Security perceptions in ride-sharing services: Influencing factors and effective solutions","authors":"Marzieh Afsari,&nbsp;Salar Salehi,&nbsp;Lory Michelle Bresciani Miristice,&nbsp;Guido Gentile","doi":"10.1016/j.retrec.2025.101689","DOIUrl":"10.1016/j.retrec.2025.101689","url":null,"abstract":"<div><div>Ride-sharing offers flexibility and cost-efficiency, but presents security challenges, especially in developing countries. In Iran, a country with a longstanding tradition of ride-sharing, this study investigates how users perceive security, and which measures they consider effective. We collected survey data from 270 participants and applied factor analysis to identify latent dimensions influencing perceived security, including experiences, social influences, family norm, and religion. These factors and demographics were included in an ordered logit model to assess their impact on perceived security. Results show gender is the strongest predictor, with women reporting lower security than men. However, men also feel insecure, especially at night or outside urban areas. These findings underscore the need to combine gender-neutral and gender-sensitive strategies to ensure fairness while addressing the diverse security needs. Other significant variables include age, past harassment experience, media exposure, and family norms. Those with very low perceived security are less responsive to interventions than those with moderate or higher security. We also evaluated user preferences for a range of proposed measures. Cameras and tracking received strong support, with many expressing a willingness to pay for increased security. Security apps showed promise, but users stressed the need for better privacy, preventive functions, and real-time response.</div></div>","PeriodicalId":47810,"journal":{"name":"Research in Transportation Economics","volume":"115 ","pages":"Article 101689"},"PeriodicalIF":3.4,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145685061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Exploring factors influencing e-scooter use in Mediterranean cities 探索影响地中海城市电动滑板车使用的因素
IF 3.4 3区 工程技术 Q1 ECONOMICS Pub Date : 2025-12-01 DOI: 10.1016/j.retrec.2025.101675
Gabriele D'Orso , Karyn Scerri , Maria Attard , Marco Migliore
E-scooters, both private and shared, have emerged as popular micromobility options addressing first/last-mile issues, increasing accessibility and in some cases, complementing public transport and reducing car use. However, their rapid uptake presents regulatory and safety challenges, even in Mediterranean cities. This study examines e-scooter user and non-user perceptions in Malta and Palermo (Sicily), focusing on socio-demographic characteristics, travel behaviours, attitudes and perceptions of e-scooter as transport mode. Data were collected through an online survey in Malta and Palermo for adults over the age of 18. Results show that surveyed non-users are predominantly female, older people and individuals having children. Younger people are more likely to be frequent users as well as high-educated people (in Malta) and people living in the city centre (in Palermo). The perception of the quality of the e-scooter sharing and the perception of safety issues were found to significantly impact the frequency of use of shared e-scooters in Malta, while the perception of safety and self-perception of physical abilities were found significant in Palermo. These findings are discussed in relation to the specific characteristics of Mediterranean cities. This research fills gaps in understanding micromobility choices, offering insights and policy recommendations to enhance e-scooter safety and adoption in Mediterranean contexts.
电动滑板车,无论是私人的还是共享的,已经成为流行的微型交通选择,解决了第一/最后一英里的问题,增加了可达性,在某些情况下,补充了公共交通,减少了汽车的使用。然而,它们的迅速普及带来了监管和安全方面的挑战,即使在地中海城市也是如此。本研究考察了马耳他和巴勒莫(西西里岛)的电动滑板车用户和非用户的看法,重点关注社会人口特征、旅行行为、对电动滑板车作为交通方式的态度和看法。数据是在马耳他和巴勒莫通过在线调查收集的,对象是18岁以上的成年人。结果显示,被调查的非使用者主要是女性、老年人和有孩子的人。年轻人、受过高等教育的人(在马耳他)和住在市中心的人(在巴勒莫)更有可能成为频繁的用户。在马耳他,对共享电动滑板车质量的感知和对安全问题的感知显著影响共享电动滑板车的使用频率,而在巴勒莫,对安全的感知和对身体能力的自我感知显著影响共享电动滑板车的使用频率。这些发现与地中海城市的具体特征有关。这项研究填补了理解微型交通选择的空白,为提高地中海地区电动滑板车的安全性和采用提供了见解和政策建议。
{"title":"Exploring factors influencing e-scooter use in Mediterranean cities","authors":"Gabriele D'Orso ,&nbsp;Karyn Scerri ,&nbsp;Maria Attard ,&nbsp;Marco Migliore","doi":"10.1016/j.retrec.2025.101675","DOIUrl":"10.1016/j.retrec.2025.101675","url":null,"abstract":"<div><div>E-scooters, both private and shared, have emerged as popular micromobility options addressing first/last-mile issues, increasing accessibility and in some cases, complementing public transport and reducing car use. However, their rapid uptake presents regulatory and safety challenges, even in Mediterranean cities. This study examines e-scooter user and non-user perceptions in Malta and Palermo (Sicily), focusing on socio-demographic characteristics, travel behaviours, attitudes and perceptions of e-scooter as transport mode. Data were collected through an online survey in Malta and Palermo for adults over the age of 18. Results show that surveyed non-users are predominantly female, older people and individuals having children. Younger people are more likely to be frequent users as well as high-educated people (in Malta) and people living in the city centre (in Palermo). The perception of the quality of the e-scooter sharing and the perception of safety issues were found to significantly impact the frequency of use of shared e-scooters in Malta, while the perception of safety and self-perception of physical abilities were found significant in Palermo. These findings are discussed in relation to the specific characteristics of Mediterranean cities. This research fills gaps in understanding micromobility choices, offering insights and policy recommendations to enhance e-scooter safety and adoption in Mediterranean contexts.</div></div>","PeriodicalId":47810,"journal":{"name":"Research in Transportation Economics","volume":"114 ","pages":"Article 101675"},"PeriodicalIF":3.4,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145690697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Analysis of the spatial range advantage of vehicle owners and its implications on vehicle ownership aspirations: Insights from India and takeaways for transportation equity 车主空间距离优势分析及其对车主拥有意愿的影响:来自印度的见解和交通公平的启示
IF 3.4 3区 工程技术 Q1 ECONOMICS Pub Date : 2025-12-01 DOI: 10.1016/j.retrec.2025.101661
Sandip Chakrabarti , Muskan Verma
The existence, causes, and consequences of the accessibility advantage offered by personal motorized vehicles relative to alternative modes have been explored in the literature. We use data from a relatively understudied geographical context to estimate the magnitude and analyze the implications of the disparity in spatial range, specifically the 60-min travel range – i.e., the maximum distance that can be covered, on average, via the multimodal transportation network – between personal motorized vehicle owners and non-owners. A higher travel range within a specified time window may indicate greater accessibility to opportunities. We use nationally representative survey data comprising over 178,000 households across India to first examine whether and to what extent household vehicle ownership is associated with a relative 60-min travel range advantage. Using an experience- and perception-based measure of household-level travel range, we find that the 60-min travel range of vehicle-owning households is at least 10 % more than vehicle-less households. This travel range advantage is relatively greater in rural and low-density areas and locations with limited public transit services. Next, we analyze whether the 60-min travel range determines the aspiration of owning a household vehicle. In urban areas, a one-km lower 60-min travel range is associated with about 5 % higher odds of aspiring to own a car. Our analysis highlights that existing vehicle owners in India enjoy a potential spatial travel range advantage relative to non-owners, and that this advantage promotes latent demand for vehicle ownership in urban areas. Closing the gap can ensure equity in accessibility and reduce personal vehicle dependence.
文献中已经探讨了个人机动车辆相对于其他模式提供的可达性优势的存在、原因和后果。我们使用一个相对未被充分研究的地理环境的数据来估计和分析空间范围差异的程度和影响,特别是60分钟的旅行范围,即通过多式联运网络平均可以覆盖的最大距离,在个人机动车辆所有者和非所有者之间。在一个特定的时间窗口内,较大的行程范围可能表明更容易获得机会。我们使用具有全国代表性的调查数据,包括印度超过178,000个家庭,首先检查家庭车辆拥有量是否以及在多大程度上与相对60分钟的旅行距离优势相关。使用基于经验和感知的家庭层面出行距离度量,我们发现有车家庭的60分钟出行距离至少比无车家庭多10%。这种出行距离优势在农村和低密度地区以及公共交通服务有限的地区相对更大。接下来,我们分析60分钟的出行范围是否决定了拥有家用汽车的意愿。在城市地区,60分钟的行驶距离每缩短1公里,有志于拥有汽车的几率就会增加5%左右。我们的分析强调,与非车主相比,印度现有车主享有潜在的空间旅行距离优势,而这一优势促进了城市地区对汽车拥有的潜在需求。缩小差距可以确保无障碍的公平性,减少个人对车辆的依赖。
{"title":"Analysis of the spatial range advantage of vehicle owners and its implications on vehicle ownership aspirations: Insights from India and takeaways for transportation equity","authors":"Sandip Chakrabarti ,&nbsp;Muskan Verma","doi":"10.1016/j.retrec.2025.101661","DOIUrl":"10.1016/j.retrec.2025.101661","url":null,"abstract":"<div><div>The existence, causes, and consequences of the accessibility advantage offered by personal motorized vehicles relative to alternative modes have been explored in the literature. We use data from a relatively understudied geographical context to estimate the magnitude and analyze the implications of the disparity in spatial range, specifically the 60-min travel range – i.e., the maximum distance that can be covered, on average, via the multimodal transportation network – between personal motorized vehicle owners and non-owners. A higher travel range within a specified time window may indicate greater accessibility to opportunities. We use nationally representative survey data comprising over 178,000 households across India to first examine whether and to what extent household vehicle ownership is associated with a relative 60-min travel range advantage. Using an experience- and perception-based measure of household-level travel range, we find that the 60-min travel range of vehicle-owning households is at least 10 % more than vehicle-less households. This travel range advantage is relatively greater in rural and low-density areas and locations with limited public transit services. Next, we analyze whether the 60-min travel range determines the aspiration of owning a household vehicle. In urban areas, a one-km lower 60-min travel range is associated with about 5 % higher odds of aspiring to own a car. Our analysis highlights that existing vehicle owners in India enjoy a potential spatial travel range advantage relative to non-owners, and that this advantage promotes latent demand for vehicle ownership in urban areas. Closing the gap can ensure equity in accessibility and reduce personal vehicle dependence.</div></div>","PeriodicalId":47810,"journal":{"name":"Research in Transportation Economics","volume":"114 ","pages":"Article 101661"},"PeriodicalIF":3.4,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145690808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
ESG disclosure as a proxy of port corporate communication and sustainable management strategy: An LDA approach ESG披露作为港口企业沟通和可持续管理战略的代理:LDA方法
IF 3.4 3区 工程技术 Q1 ECONOMICS Pub Date : 2025-12-01 DOI: 10.1016/j.retrec.2025.101680
Michael Tsatsaronis , Agapi Stergiouli , George Vaggelas
The contemporary port industry faces intense competition, compelling port authorities and operators to enhance efficiency and effectiveness as proxies for competitiveness. Environmental-Social-Governance (ESG) schemes have recently emerged as a means for ports to create value beyond core activities, engaging broader stakeholder groups. ESG encompasses environmental, social, and governance factors influencing a company's value creation and competitiveness. This paper examines the role of ESG reporting in enhancing corporate communication and sustainable strategic management in the port industry, focusing on case studies of the Piraeus Port Authority S.A. and Thessaloniki Port Authority the backbone of the Greek port system. Utilizing an innovative quantitative content analysis model, Latent Dirichlet Allocation (LDA), the study analyzes sustainability reports from 2019 to 2023. The findings reveal a shift towards more integrated and proactive sustainability strategies, with increased stakeholder engagement and digital communication. This study underscores the critical role of ESG reporting in shaping corporate communication and sustainable strategic management, highlighting the need for ongoing research to address evolving challenges and opportunities. Also, it unveils the aiming of ESG strategies of the two major Greek ports under the light of the engagement of private investors/port operators. As ports navigate the complexities of the modern business environment, embracing robust ESG practices will be essential for fostering long-term value creation and maintaining competitive advantage, especially in the Greek pot industry in which ESG adoption is at its early stages.
当代港口行业面临着激烈的竞争,迫使港口当局和运营商提高效率和效益,作为竞争力的代表。环境-社会治理(ESG)计划最近成为港口在核心活动之外创造价值的一种手段,吸引了更广泛的利益相关者群体。ESG包括影响公司价值创造和竞争力的环境、社会和治理因素。本文探讨了ESG报告在加强港口行业企业沟通和可持续战略管理方面的作用,重点研究了希腊港口系统支柱——比雷埃夫斯港务局S.A.和塞萨洛尼基港务局的案例。该研究利用创新的定量内容分析模型,潜在狄利克雷分配(LDA),分析了2019年至2023年的可持续发展报告。调查结果显示,随着利益相关者的参与和数字沟通的增加,企业正在向更加综合和主动的可持续发展战略转变。本研究强调了ESG报告在塑造企业沟通和可持续战略管理方面的关键作用,强调了持续研究以应对不断变化的挑战和机遇的必要性。此外,它还揭示了在私人投资者/港口运营商参与的情况下,希腊两个主要港口的ESG战略目标。随着港口在复杂的现代商业环境中导航,拥抱稳健的ESG实践对于促进长期价值创造和保持竞争优势至关重要,特别是在ESG采用处于早期阶段的希腊大麻行业。
{"title":"ESG disclosure as a proxy of port corporate communication and sustainable management strategy: An LDA approach","authors":"Michael Tsatsaronis ,&nbsp;Agapi Stergiouli ,&nbsp;George Vaggelas","doi":"10.1016/j.retrec.2025.101680","DOIUrl":"10.1016/j.retrec.2025.101680","url":null,"abstract":"<div><div>The contemporary port industry faces intense competition, compelling port authorities and operators to enhance efficiency and effectiveness as proxies for competitiveness. Environmental-Social-Governance (ESG) schemes have recently emerged as a means for ports to create value beyond core activities, engaging broader stakeholder groups. ESG encompasses environmental, social, and governance factors influencing a company's value creation and competitiveness. This paper examines the role of ESG reporting in enhancing corporate communication and sustainable strategic management in the port industry, focusing on case studies of the Piraeus Port Authority S.A. and Thessaloniki Port Authority the backbone of the Greek port system. Utilizing an innovative quantitative content analysis model, Latent Dirichlet Allocation (LDA), the study analyzes sustainability reports from 2019 to 2023. The findings reveal a shift towards more integrated and proactive sustainability strategies, with increased stakeholder engagement and digital communication. This study underscores the critical role of ESG reporting in shaping corporate communication and sustainable strategic management, highlighting the need for ongoing research to address evolving challenges and opportunities. Also, it unveils the aiming of ESG strategies of the two major Greek ports under the light of the engagement of private investors/port operators. As ports navigate the complexities of the modern business environment, embracing robust ESG practices will be essential for fostering long-term value creation and maintaining competitive advantage, especially in the Greek pot industry in which ESG adoption is at its early stages.</div></div>","PeriodicalId":47810,"journal":{"name":"Research in Transportation Economics","volume":"114 ","pages":"Article 101680"},"PeriodicalIF":3.4,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145624158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
期刊
Research in Transportation Economics
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1