Research in Transportation Economics最新文献

筛选
英文 中文
Assessing passenger preferences for Bus Rapid Transit characteristics: A discrete choice experiment among current and potential Dutch passengers 评估乘客对快速公交特性的偏好:荷兰现有和潜在乘客的离散选择实验
IF 3.8 3区 工程技术
Research in Transportation Economics Pub Date : 2023-09-01 DOI: 10.1016/j.retrec.2023.101307
René Borsje , Suzanne Hiemstra-van Mastrigt , Wijnand Veeneman
{"title":"Assessing passenger preferences for Bus Rapid Transit characteristics: A discrete choice experiment among current and potential Dutch passengers","authors":"René Borsje ,&nbsp;Suzanne Hiemstra-van Mastrigt ,&nbsp;Wijnand Veeneman","doi":"10.1016/j.retrec.2023.101307","DOIUrl":"https://doi.org/10.1016/j.retrec.2023.101307","url":null,"abstract":"<div><p>To gain ridership, bus services need to offer more than just high frequencies. An attractive system design for Bus Rapid Transit (BRT) is a result of various configurational choices concerning infrastructure, rolling stock and operations. To find out which configurations are preferred by potential and current passengers, a Discrete Choice Experiment was carried out in The Netherlands. For this study, eight BRT characteristics were included. Results (n = 1019) show that four characteristics are valued the most: frequency, service hours, reliability and stop spacing. The attractiveness of three different service formulas or configurations is evaluated. The more conventional bus configuration is preferred by the majority of the respondents. However, a considerable amount (25%) of respondents that prefer this configuration does not consider using this service formula. Configurations that either address offering more passenger comfort or higher capacity, do seem to be attractive to distinct passenger segments who are more likely to actually use the service. These appealing BRT configurations address different types of passenger segments and therefore could coexist on certain routes.</p></div>","PeriodicalId":47810,"journal":{"name":"Research in Transportation Economics","volume":"100 ","pages":"Article 101307"},"PeriodicalIF":3.8,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50189726","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
The impact of ‘competition for the market’ regulatory designs on intercity bus prices “市场竞争”监管设计对城际巴士价格的影响
IF 3.8 3区 工程技术
Research in Transportation Economics Pub Date : 2023-09-01 DOI: 10.1016/j.retrec.2023.101310
Javier Asensio , Anna Matas
{"title":"The impact of ‘competition for the market’ regulatory designs on intercity bus prices","authors":"Javier Asensio ,&nbsp;Anna Matas","doi":"10.1016/j.retrec.2023.101310","DOIUrl":"https://doi.org/10.1016/j.retrec.2023.101310","url":null,"abstract":"<div><p>Spain regulates its intercity bus market by means of a ‘competition for the market’ mechanism, whose design has been modified several times in the last years. This implies that current services are operated under contracts whose conditions are heterogeneous. We take advantage of such fact to empirically measure the impact that regulatory designs may have on fares paid by the users. Controlling for the different determinant of bus prices at route level the results show very large differences between routes whose contracts were awarded under relatively open conditions compared to regionally regulated routes or old contracts whose concessions were extended in 1987 and have not been retendered since then. The observed difference between the cheapest and the most expensive services is to a great extent explained by the difference in the regulatory designs used to award each contract.</p></div>","PeriodicalId":47810,"journal":{"name":"Research in Transportation Economics","volume":"100 ","pages":"Article 101310"},"PeriodicalIF":3.8,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50189729","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
Expectations and satisfaction towards railway companies by residents in Japan 日本居民对铁路公司的期望和满意度
IF 3.8 3区 工程技术
Research in Transportation Economics Pub Date : 2023-09-01 DOI: 10.1016/j.retrec.2023.101303
Kiyohito Utsunomiya , Nobuhiro Sanko , Chikako Keumi
{"title":"Expectations and satisfaction towards railway companies by residents in Japan","authors":"Kiyohito Utsunomiya ,&nbsp;Nobuhiro Sanko ,&nbsp;Chikako Keumi","doi":"10.1016/j.retrec.2023.101303","DOIUrl":"https://doi.org/10.1016/j.retrec.2023.101303","url":null,"abstract":"<div><p>Railway companies in Japan, which have successfully managed their business using TOD approach, now face a decrease in the general population under a motorised society. They are trying to cooperate with residents along their operating lines by expanding their activities, but it is unclear what residents expect of railway companies and to what extent residents are satisfied with these companies. This paper uses questionnaire survey data to explore this issue quantitatively. Expectations and satisfaction are examined using both aggregate and disaggregate analysis. In disaggregate analysis, expectations and satisfaction are jointly modelled in bivariate ordered probit models to investigate the interrelationships between them. The results are as follows. Residents have high expectations in various issues, and those in metropolitan areas tend to be satisfied with the transportation-related services provided by railway companies. However, there is quite a large amount of dissatisfaction with railway company activities in fields other than transportation. Expectations and satisfaction depend on the respondents’ attributes, including residential geographical conditions, and these vary even among stations within the same company, but expectations and satisfaction have little relationship to whether or not residents frequently travel by train.</p></div>","PeriodicalId":47810,"journal":{"name":"Research in Transportation Economics","volume":"100 ","pages":"Article 101303"},"PeriodicalIF":3.8,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50189702","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
Robotaxi service: The transition and governance investigation in China Robotaxi服务:中国的转型与治理调查
IF 3.8 3区 工程技术
Research in Transportation Economics Pub Date : 2023-09-01 DOI: 10.1016/j.retrec.2023.101326
Yimin Zhou, Meng Xu
{"title":"Robotaxi service: The transition and governance investigation in China","authors":"Yimin Zhou,&nbsp;Meng Xu","doi":"10.1016/j.retrec.2023.101326","DOIUrl":"https://doi.org/10.1016/j.retrec.2023.101326","url":null,"abstract":"<div><p><span>The Multi-Level Perspective (MLP) views transition as a process resulting from the interaction of social and technological factors at different levels. With the MLP approach, the robotaxi service transition and governance<span> driven by autonomous driving technologies are investigated based on the current development of China. We divide the transition of robotaxi service into four phases: The first phase (1991–2015) shielded the innovation of robotaxi by determining legal status; Governments, enterprises, universities, and </span></span>industry<span> consortia conduct autonomous driving trials and advance the adoption of technologies in the second phase (2016–2025); The third phase (2026–2035) would aim to tackle barriers in regulation, industry and public acceptance, and enhance competitiveness of the robotaxi to enter the market; The fourth phase (2036–2050) would form the robotaxi based service system. We found urbanization process and the innovation-driven economic shift, low-carbon development, and aging population have created a favorable landscape “pushing” for the development of robotaxi service. With the current transition in the second phase, the central government, local governments, and enterprises could tackle obstacles in regulation, economy, and public attitude to build a suitable environment for the robotaxi service development. Moreover, the robotaxi service towards the mobility as a service (MaaS) business model is also discussed to develop an integrated mobility ecosystem.</span></p></div>","PeriodicalId":47810,"journal":{"name":"Research in Transportation Economics","volume":"100 ","pages":"Article 101326"},"PeriodicalIF":3.8,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50189721","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: 1
Personal safety perception of ride-share amongst young adults in Cape Town: The effect of gender, vehicle access and Covid-19 开普敦年轻人对拼车的人身安全认知:性别、车辆通行和新冠肺炎的影响
IF 3.8 3区 工程技术
Research in Transportation Economics Pub Date : 2023-09-01 DOI: 10.1016/j.retrec.2023.101323
Jennifer Louisa Baufeldt, Marianne Vanderschuren
{"title":"Personal safety perception of ride-share amongst young adults in Cape Town: The effect of gender, vehicle access and Covid-19","authors":"Jennifer Louisa Baufeldt,&nbsp;Marianne Vanderschuren","doi":"10.1016/j.retrec.2023.101323","DOIUrl":"https://doi.org/10.1016/j.retrec.2023.101323","url":null,"abstract":"<div><p>This paper investigates ride-share related personal safety of young adults in Cape Town in relation to the Covid-19 pandemic. As a response to gender-based violence, the focus is on the different perceptions of females and males. Additionally, this paper considers how having access to a private vehicle affects an individual's perception of their safety. Data was collected amongst university students in Cape Town, as they have previously been identified as likely ride-share users.</p><p>Uncertainty in using ride-share services is explored in the scenarios of ‘before’, ‘during’ and ‘after’ Covid-19 to see possible impacts of the pandemic. This study shows that access to a private vehicle is a significant factor when considering ride-share trips ‘before’, ‘during’ and ‘after’ the Covid-19 pandemic. Being female, especially with access to a private vehicle, has a negative correlation to making ride-share trips ‘at night’, ‘alone’ or ‘alone at night’.</p><p>By understanding the Covid-19 pandemic influences on individuals’ perceptions, strategies and policies can be better informed. This ensures that the negative impacts of similar future disruptive events are mitigated. Supporting the progress of the case city, Cape Town, into having a more inclusive, multi-modal transport culture, this study proposes the implementation of several policies and strategies.</p></div>","PeriodicalId":47810,"journal":{"name":"Research in Transportation Economics","volume":"100 ","pages":"Article 101323"},"PeriodicalIF":3.8,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50189728","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
Establishing the first economic regulation of the Mexican rail concessions 建立墨西哥铁路特许经营权的第一个经济法规
IF 3.8 3区 工程技术
Research in Transportation Economics Pub Date : 2023-09-01 DOI: 10.1016/j.retrec.2022.101250
César Rivera-Trujillo
{"title":"Establishing the first economic regulation of the Mexican rail concessions","authors":"César Rivera-Trujillo","doi":"10.1016/j.retrec.2022.101250","DOIUrl":"https://doi.org/10.1016/j.retrec.2022.101250","url":null,"abstract":"<div><p>On February 2020, the Federal Economic Competition Commission (COFECE) issued a resolution on lack of effective competition in 20 routes of freight railway transportation of chemical products originating in southern Mexico. As a response, the Mexican rail regulator, the Regulatory Agency of Rail Transport (ARTF) responsible for overseeing different aspects of rail transportation, such as the economic regulation regarding tariffs, established the regulation and determined maximum rates for the provision of the rail service concerning three different concessionaires in twenty origin-destination pairs for the transportation of chlorine, ethylene oxide, anhydrous ammonia, and caustic soda.</p><p>The model used in the economic regulation consisted of establishing a maximum rate per tonne-kilometre for each combination of route and product. The maximum rate was calculated from the average total costs plus a reasonable profit given by the rate that allows a reasonable return on assets, determined through the Weighted Average Cost of Capital that allows the concessionaires to invest in a sector that is particularly capital intensive. Thus, the maximum regulated rate is equal to the rate where the concessionaire breaks even, that is makes zero profit (average cost pricing or “second best”), plus the Weighted Average Cost of Capital.</p><p>The results of the rate regulation of the Mexican rail concessions showed a significant reduction of the rates actually charged in 66% on average and 77% with respect to the registered rates. Although the implementation is not complete, as the regulation is being analyzed in the tribunals, the economic regulation showed that the rates are very far from the average cost in the absent of effective competition. More research needs to be done to evaluate the real impact of the first economic regulation of the Mexican rail concessions.</p></div>","PeriodicalId":47810,"journal":{"name":"Research in Transportation Economics","volume":"100 ","pages":"Article 101250"},"PeriodicalIF":3.8,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50189809","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
Diverted and induced demand: Evidence from the London-Paris passenger market 转移和诱导的需求:来自伦敦-巴黎客运市场的证据
IF 3.8 3区 工程技术
Research in Transportation Economics Pub Date : 2023-09-01 DOI: 10.1016/j.retrec.2023.101304
Nicolò Avogadro, Renato Redondi
{"title":"Diverted and induced demand: Evidence from the London-Paris passenger market","authors":"Nicolò Avogadro,&nbsp;Renato Redondi","doi":"10.1016/j.retrec.2023.101304","DOIUrl":"https://doi.org/10.1016/j.retrec.2023.101304","url":null,"abstract":"<div><p>The paper investigates passengers' preferences and demand induction (or reduction) patterns for the London-Paris passenger market. By leveraging an integrated model calibrated on an extensive dataset about passenger flows between London and Paris during the period 2009–2019, we investigate key dimensions by which travelers evaluate transport modes and how both socio-economic characteristics and supply-attribute variations contribute to stimulating or reducing the overall demand. The research confirms the importance of attributes, such as travel times, fares, and frequencies on passenger modal choice, providing some sketches about passengers' propensity toward air or high-speed rail (HSR) mode. Based on data in this study, we find that <em>ceteris paribus</em> a one-trip increase in the daily frequency of Eurostar would stimulate demand for more than 94,500 passengers per year (2.3% of current ridership), while a reduction of HSR travel time by 10 min would increase current flows by at least 1.3%. Analyzing the demand implications of a possible policy of ending air routes for environmental purposes, we prove that the cancellation of air connections would result in a reduction of current demand higher than 6%. HSR service providers could offset the reduction in service levels resulting from air routes closure mainly by leveraging service frequency.</p></div>","PeriodicalId":47810,"journal":{"name":"Research in Transportation Economics","volume":"100 ","pages":"Article 101304"},"PeriodicalIF":3.8,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50189678","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
Reforms in Metro Manila's bus transport system hastened by the Covid-19 pandemic: A policy capacity analysis of the EDSA busway 新冠肺炎疫情加速了马尼拉地铁公交系统的改革:EDSA公交通道的政策容量分析
IF 3.8 3区 工程技术
Research in Transportation Economics Pub Date : 2023-09-01 DOI: 10.1016/j.retrec.2023.101305
Sandy Mae Gaspay , Noriel Christopher Tiglao , Mark Angelo Tacderas , Niki Jon Tolentino , Anne Clarice Ng
{"title":"Reforms in Metro Manila's bus transport system hastened by the Covid-19 pandemic: A policy capacity analysis of the EDSA busway","authors":"Sandy Mae Gaspay ,&nbsp;Noriel Christopher Tiglao ,&nbsp;Mark Angelo Tacderas ,&nbsp;Niki Jon Tolentino ,&nbsp;Anne Clarice Ng","doi":"10.1016/j.retrec.2023.101305","DOIUrl":"https://doi.org/10.1016/j.retrec.2023.101305","url":null,"abstract":"<div><p>In response to the health and mobility issues caused by the Covid-19 pandemic, the Philippine government took advantage of opportunities to expedite public transport reforms by converting a portion of Epifanio delos Santos Avenue (EDSA), Metro Manila's busiest thoroughfare, into a dedicated busway. This deserves a closer look since historically, solutions catering to EDSA have been bereft with challenges given the overlapping powers of various authorities and multitude of interests that benefit from the status-quo. Through semi-structured interviews with key actors followed by a policy capacity analysis, the authors found that the pandemic provided opportunities for the key institutions to gain political legitimacy and authority that pushed its stakeholders to cooperate. However, this new solution forced them to take on tasks that are outside their regular responsibilities so while they were able to provide measures to make EDSA Busway succeed in the short-term, much work needs to be done to sustain the gains achieved.</p></div>","PeriodicalId":47810,"journal":{"name":"Research in Transportation Economics","volume":"100 ","pages":"Article 101305"},"PeriodicalIF":3.8,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50189724","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
Transport vulnerability: Measuring travel time and expenditure budget in Addis Ababa 交通脆弱性:衡量亚的斯亚贝巴的旅行时间和支出预算
IF 3.8 3区 工程技术
Research in Transportation Economics Pub Date : 2023-09-01 DOI: 10.1016/j.retrec.2022.101247
Eleni Gebremeskel , Mintesnot Woldeamanuel , Berhanu Woldetensae
{"title":"Transport vulnerability: Measuring travel time and expenditure budget in Addis Ababa","authors":"Eleni Gebremeskel ,&nbsp;Mintesnot Woldeamanuel ,&nbsp;Berhanu Woldetensae","doi":"10.1016/j.retrec.2022.101247","DOIUrl":"https://doi.org/10.1016/j.retrec.2022.101247","url":null,"abstract":"<div><p>Public transport is critical for urban dwellers as it is a key link to access economic opportunities and social services. However, transit services in most developing nations are characterized by longer journey time, high fare, unsafe and uncomfortable travel. Hence, this study seeks to analyze the travel experience of public transit users through the lens of vulnerability. The main objective of the research is to investigate transit users’ expenditure on travel, both in terms of time and money, which are regarded as “budgets” allocated to travel. The analysis is based on a survey distributed to 457 public transit users in Addis Ababa. The study applied proportions, percentages and cross-tabulation of key variables and statistical methods, such as one-way ANOVA to analyze the level of vulnerability of transit users. The result shows that low- and middle-income groups bear a higher level of travel burden, in terms of total travel time<span> and percentage of income spent on transport than high income groups. Transport expenditure accounted above 20% of household income for 88% of low-income groups. However, it is below 15% of household income for high income groups, which reveals less financial burden on them. In terms of travel time, 63.8% of middle income groups experience a total travel time of more than 2 h and 52.3% of low-income groups but only 36.3% of high-income groups devote a total travel time above 2 h. Therefore, transport policy formulation should consider the needs and challenges of various groups of transit users.</span></p></div>","PeriodicalId":47810,"journal":{"name":"Research in Transportation Economics","volume":"100 ","pages":"Article 101247"},"PeriodicalIF":3.8,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50189810","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
The sustainable hybrid truck-drone delivery model with stochastic customer existence 具有随机客户存在的可持续混合动力卡车-无人机配送模型
IF 3.8 3区 工程技术
Research in Transportation Economics Pub Date : 2023-09-01 DOI: 10.1016/j.retrec.2023.101325
Ebrahim Teimoury, Reza Rashid
{"title":"The sustainable hybrid truck-drone delivery model with stochastic customer existence","authors":"Ebrahim Teimoury,&nbsp;Reza Rashid","doi":"10.1016/j.retrec.2023.101325","DOIUrl":"https://doi.org/10.1016/j.retrec.2023.101325","url":null,"abstract":"<div><p><em>Drone delivery</em><span> is a fast delivery mode that has gained tremendous attention from academia and various companies in recent years. However, due to limited battery and payload capacities which may reduce the system's efficiency, it is better to coordinate ground vehicles and drones to take advantage of both trucks' large capacity and the drone's high speed. As a restriction for realistic parcel delivery systems, customer presence is only sometimes deterministic. For instance, a customer makes an order from an e-retailer, but due to various probable reasons, he cannot be present at home to get service. In this paper, we have introduced a sustainable hybrid truck-drone delivery model with stochastic customer presence. We have modeled the system with the Markov chain and proposed a linear mathematical model. This work processes with a heuristic and a Branch-and-Bound algorithm. Also, we have carried out numerous computational experiments to evaluate the proposed solution methods' performance, where the results show the efficiency of the proposed algorithms. Finally, we performed a detailed sensitivity analysis on a case study and studied various aspects of the problem. The results highlight that truck and drone coordination reduces completion time, operational costs, truck emissions, and social penalties.</span></p></div>","PeriodicalId":47810,"journal":{"name":"Research in Transportation Economics","volume":"100 ","pages":"Article 101325"},"PeriodicalIF":3.8,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50189717","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
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
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
确定
请完成安全验证×
相关产品
×
本文献相关产品
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 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信