首页 > 最新文献

Public–Private Partnerships for Infrastructure Development最新文献

英文 中文
Mitigating PPP governance challenges: lessons from eastern Australia 减轻PPP治理挑战:来自澳大利亚东部的经验教训
Pub Date : 2019-04-26 DOI: 10.4337/9781788973182.00013
R. Levitt, Kent Eriksson
Australia has been a pioneer in using public_private partnership (PPP) delivery of infrastructure for the past three decades and has accumulated a great deal of experience – both good and bad – that has helped to refine its governance regimes on both the public and the private sides of PPP delivery. This chapter reports findings from a set of interviews with all the key participants in PPP delivery about how government legislators and executive agencies currently prioritize projects professionally to avoid typical legislative parochialism in authorizing locally favored infrastructure projects, and how they organize the regulatory framework and agencies for PPP delivery. It then describes the governance regimes that have evolved for minimizing and addressing conflicts of interest and opportunistic behavior by and within the private sector concessionaires’ project companies that finance, deliver and operate PPP infrastructure services in mature Australian federal and state PPP markets. Countries considering or beginning to use infrastructure delivery can learn valuable lessons about governing this mode of infrastructure service delivery in the public interest from how Australia has adapted its governance mechanisms and safeguards for PPP delivery.
在过去的三十年里,澳大利亚一直是使用公私合作伙伴关系(PPP)交付基础设施的先驱,并积累了大量的经验(有好的也有坏的),这些经验有助于完善公私合作伙伴关系交付的公共和私人方面的治理制度。本章报告了对PPP交付的所有关键参与者的一系列访谈的结果,包括政府立法者和执行机构目前如何专业地优先考虑项目,以避免在授权当地青睐的基础设施项目时典型的立法狭隘主义,以及他们如何组织监管框架和机构来实施PPP。然后,它描述了在成熟的澳大利亚联邦和州PPP市场中融资、交付和运营PPP基础设施服务的私营部门特许项目公司内部为最大限度地减少和解决利益冲突和机会主义行为而发展起来的治理制度。考虑或开始使用基础设施交付的国家可以从澳大利亚如何调整其PPP交付的治理机制和保障措施中学到管理这种公共利益的基础设施服务交付模式的宝贵经验。
{"title":"Mitigating PPP governance challenges: lessons from eastern Australia","authors":"R. Levitt, Kent Eriksson","doi":"10.4337/9781788973182.00013","DOIUrl":"https://doi.org/10.4337/9781788973182.00013","url":null,"abstract":"Australia has been a pioneer in using public_private partnership (PPP) delivery of infrastructure for the past three decades and has accumulated a great deal of experience – both good and bad – that has helped to refine its governance regimes on both the public and the private sides of PPP delivery. This chapter reports findings from a set of interviews with all the key participants in PPP delivery about how government legislators and executive agencies currently prioritize projects professionally to avoid typical legislative parochialism in authorizing locally favored infrastructure projects, and how they organize the regulatory framework and agencies for PPP delivery. It then describes the governance regimes that have evolved for minimizing and addressing conflicts of interest and opportunistic behavior by and within the private sector concessionaires’ project companies that finance, deliver and operate PPP infrastructure services in mature Australian federal and state PPP markets. Countries considering or beginning to use infrastructure delivery can learn valuable lessons about governing this mode of infrastructure service delivery in the public interest from how Australia has adapted its governance mechanisms and safeguards for PPP delivery.","PeriodicalId":269517,"journal":{"name":"Public–Private Partnerships for Infrastructure Development","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114510296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The role of institutional investors in financing PPP infrastructure 机构投资者在PPP基础设施融资中的作用
Pub Date : 2019-04-26 DOI: 10.4337/9781788973182.00016
Ashby H. B. Monk, Rajiv Sharma
{"title":"The role of institutional investors in financing PPP infrastructure","authors":"Ashby H. B. Monk, Rajiv Sharma","doi":"10.4337/9781788973182.00016","DOIUrl":"https://doi.org/10.4337/9781788973182.00016","url":null,"abstract":"","PeriodicalId":269517,"journal":{"name":"Public–Private Partnerships for Infrastructure Development","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115699821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
(Re)assessing public–private partnership governance challenges: an institutional maturity perspective (再)评估公私伙伴关系治理挑战:制度成熟度视角
Pub Date : 2019-04-26 DOI: 10.4337/9781788973182.00019
Carter B. Casady, Kent Eriksson, R. Levitt, W. Scott
{"title":"(Re)assessing public–private partnership governance challenges: an institutional maturity perspective","authors":"Carter B. Casady, Kent Eriksson, R. Levitt, W. Scott","doi":"10.4337/9781788973182.00019","DOIUrl":"https://doi.org/10.4337/9781788973182.00019","url":null,"abstract":"","PeriodicalId":269517,"journal":{"name":"Public–Private Partnerships for Infrastructure Development","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129737599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Transportation public–private partnership market in the United States: moving beyond its current state 美国交通运输公私合作市场:超越现状
Pub Date : 2019-04-26 DOI: 10.4337/9781788973182.00020
M. Garvin
{"title":"Transportation public–private partnership market in the United States: moving beyond its current state","authors":"M. Garvin","doi":"10.4337/9781788973182.00020","DOIUrl":"https://doi.org/10.4337/9781788973182.00020","url":null,"abstract":"","PeriodicalId":269517,"journal":{"name":"Public–Private Partnerships for Infrastructure Development","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129448073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The financier state: infrastructure planning and asset recycling in New South Wales, Australia 金融家国家:澳大利亚新南威尔士州的基础设施规划和资产回收
Pub Date : 2019-04-26 DOI: 10.4337/9781788973182.00023
C. Nowacki
{"title":"The financier state: infrastructure planning and asset recycling in New South Wales, Australia","authors":"C. Nowacki","doi":"10.4337/9781788973182.00023","DOIUrl":"https://doi.org/10.4337/9781788973182.00023","url":null,"abstract":"","PeriodicalId":269517,"journal":{"name":"Public–Private Partnerships for Infrastructure Development","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129292973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Private participation in US infrastructure: the role of regional PPP units 美国基础设施的私人参与:区域PPP单位的作用
Pub Date : 2019-04-26 DOI: 10.4337/9781788973182.00021
Carter B. Casady, R. Geddes
{"title":"Private participation in US infrastructure: the role of regional PPP units","authors":"Carter B. Casady, R. Geddes","doi":"10.4337/9781788973182.00021","DOIUrl":"https://doi.org/10.4337/9781788973182.00021","url":null,"abstract":"","PeriodicalId":269517,"journal":{"name":"Public–Private Partnerships for Infrastructure Development","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124446002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Framework to assess fiscal support mechanisms for mitigating revenue risk in transportation public–private partnerships 评估财政支持机制的框架,以减轻交通公私伙伴关系中的收入风险
Pub Date : 2019-04-26 DOI: 10.4337/9781788973182.00017
Ting Liu, M. Garvin
{"title":"Framework to assess fiscal support mechanisms for mitigating revenue risk in transportation public–private partnerships","authors":"Ting Liu, M. Garvin","doi":"10.4337/9781788973182.00017","DOIUrl":"https://doi.org/10.4337/9781788973182.00017","url":null,"abstract":"","PeriodicalId":269517,"journal":{"name":"Public–Private Partnerships for Infrastructure Development","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125734970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Community investment and crowdfunding as partnership strategies for local infrastructure delivery 社区投资和众筹作为地方基础设施交付的伙伴战略
Pub Date : 2019-04-26 DOI: 10.4337/9781788973182.00024
Kate Gasparro
{"title":"Community investment and crowdfunding as partnership strategies for local infrastructure delivery","authors":"Kate Gasparro","doi":"10.4337/9781788973182.00024","DOIUrl":"https://doi.org/10.4337/9781788973182.00024","url":null,"abstract":"","PeriodicalId":269517,"journal":{"name":"Public–Private Partnerships for Infrastructure Development","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114342647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Introduction: PPPs – theoretical challenges and directions forward 导论:ppp -理论挑战与前进方向
Pub Date : 2019-04-26 DOI: 10.4337/9781788973182.00006
W. Scott, R. Levitt, M. Garvin
We do not subscribe to a goal of unconstrained development for its own sake; but assuring an adequate supply of civic infrastructure (including housing, roads and public transport, power, water supply and sanitation) is essential to meet the needs of developing countries where populations are growing and becoming more urbanized, as well as those of developed countries where infrastructure is aging and in need of repair and/or replacement. Important as it is, however, providing the necessary infrastructure confronts severe difficulties. Governments of emerging market countries face enormous shortfalls in financial and governance capacity in delivering sorely needed new infrastructure for their growing populations. At the same time, financially strapped governments of mature market economies are struggling to upgrade and retrofit their aging and obsolete infrastructure. Societies at both ends of the development spectrum need more robust project governance structures that can enable new forms of financing coupled with improved systems of managerial oversight and control. Infrastructure is central to societal welfare, and the high cost of replicating the “last mile of pipe or wire” often requires a monopolistic state provision or regulated private provision strategy. We would thus ordinarily expect that the state would play a major role in its prioritization, funding, development and operation. However, historically this has not always been the case. Specific countries vary in their experience, but the United States (US) is not atypical. As Miller and Floricel (2000) point out, during much of the nineteenth century US transportation systems and power networks were built by private entrepreneurs, with minimal public involvement. Toward the end of the century, large corporate groups replaced the entrepreneurs but still experienced only modest public oversight. However, during the Progressive era of the early twentieth century, private initiatives were increasingly regulated and, over time, nationalized as public
我们不赞成为了不受限制的发展而发展的目标;但是,确保民用基础设施(包括住房、道路和公共交通、电力、供水和卫生设施)的充足供应对于满足人口不断增长和日益城市化的发展中国家以及基础设施老化和需要维修和(或)更换的发达国家的需要至关重要。然而,提供必要的基础设施虽然很重要,却面临着严重的困难。新兴市场国家政府在为其不断增长的人口提供急需的新基础设施方面,在资金和治理能力方面存在巨大不足。与此同时,财政拮据的成熟市场经济体政府正在努力升级和改造其老化和过时的基础设施。处于发展范围两端的社会都需要更强有力的项目治理结构,使新的融资形式能够与改进的管理监督和控制系统相结合。基础设施是社会福利的核心,复制“最后一英里管道或电线”的高成本往往需要垄断性的国家提供或受监管的私人提供战略。因此,我们通常期望国家在其优先排序、资助、发展和运营方面发挥主要作用。然而,从历史上看,情况并非总是如此。具体国家的经验各不相同,但美国并非例外。正如Miller和Floricel(2000)所指出的,在19世纪的大部分时间里,美国的交通系统和电力网络都是由私人企业家建造的,公众参与很少。到本世纪末,大型企业集团取代了企业家,但仍然只受到适度的公众监督。然而,在二十世纪早期的进步时代,私人企业受到越来越多的管制,随着时间的推移,被国有化为公共企业
{"title":"Introduction: PPPs – theoretical challenges and directions forward","authors":"W. Scott, R. Levitt, M. Garvin","doi":"10.4337/9781788973182.00006","DOIUrl":"https://doi.org/10.4337/9781788973182.00006","url":null,"abstract":"We do not subscribe to a goal of unconstrained development for its own sake; but assuring an adequate supply of civic infrastructure (including housing, roads and public transport, power, water supply and sanitation) is essential to meet the needs of developing countries where populations are growing and becoming more urbanized, as well as those of developed countries where infrastructure is aging and in need of repair and/or replacement. Important as it is, however, providing the necessary infrastructure confronts severe difficulties. Governments of emerging market countries face enormous shortfalls in financial and governance capacity in delivering sorely needed new infrastructure for their growing populations. At the same time, financially strapped governments of mature market economies are struggling to upgrade and retrofit their aging and obsolete infrastructure. Societies at both ends of the development spectrum need more robust project governance structures that can enable new forms of financing coupled with improved systems of managerial oversight and control. Infrastructure is central to societal welfare, and the high cost of replicating the “last mile of pipe or wire” often requires a monopolistic state provision or regulated private provision strategy. We would thus ordinarily expect that the state would play a major role in its prioritization, funding, development and operation. However, historically this has not always been the case. Specific countries vary in their experience, but the United States (US) is not atypical. As Miller and Floricel (2000) point out, during much of the nineteenth century US transportation systems and power networks were built by private entrepreneurs, with minimal public involvement. Toward the end of the century, large corporate groups replaced the entrepreneurs but still experienced only modest public oversight. However, during the Progressive era of the early twentieth century, private initiatives were increasingly regulated and, over time, nationalized as public","PeriodicalId":269517,"journal":{"name":"Public–Private Partnerships for Infrastructure Development","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130202183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Stakeholder network dynamics in public–private partnerships 公私伙伴关系中的利益相关者网络动态
Pub Date : 2019-04-26 DOI: 10.4337/9781788973182.00009
Andrew J. South, R. Levitt, G. Dewulf
Institutional and stakeholder theory are employed to provide a conceptual framework to examine the issues posed for public_private partnerships (PPPs) as they create a governance framework to manage the interactions of multiple parties with different capabilities and varying interests. Because projects typically extend over several decades, a fundamental challenge is posed by dynamic stakeholder networks that vary significantly across the phases of project lifecycle. Project phases include identification or development, procurement, construction and maintenance. It is observed that different subsets of stakeholders assume dominance during each of these phases. These processes are illustrated by an empirical study of a highway transportation project making use of multiple types of archival data and interviews with a cross-section of stakeholders along the project timeline.
制度和利益相关者理论被用来提供一个概念性框架,以检查公私伙伴关系(ppp)所带来的问题,因为它们创建了一个治理框架,以管理具有不同能力和不同利益的多方的互动。因为项目通常会延续几十年,一个基本的挑战是由动态的干系人网络构成的,这些干系人网络在项目生命周期的各个阶段变化很大。项目阶段包括鉴定或开发、采购、建造和维护。可以观察到,不同的利益相关者子集在每个阶段都占据主导地位。这些过程通过对公路运输项目的实证研究来说明,该项目利用了多种类型的档案数据和对项目时间表上利益相关者的横截面的访谈。
{"title":"Stakeholder network dynamics in public–private partnerships","authors":"Andrew J. South, R. Levitt, G. Dewulf","doi":"10.4337/9781788973182.00009","DOIUrl":"https://doi.org/10.4337/9781788973182.00009","url":null,"abstract":"Institutional and stakeholder theory are employed to provide a conceptual framework to examine the issues posed for public_private partnerships (PPPs) as they create a governance framework to manage the interactions of multiple parties with different capabilities and varying interests. Because projects typically extend over several decades, a fundamental challenge is posed by dynamic stakeholder networks that vary significantly across the phases of project lifecycle. Project phases include identification or development, procurement, construction and maintenance. It is observed that different subsets of stakeholders assume dominance during each of these phases. These processes are illustrated by an empirical study of a highway transportation project making use of multiple types of archival data and interviews with a cross-section of stakeholders along the project timeline.","PeriodicalId":269517,"journal":{"name":"Public–Private Partnerships for Infrastructure Development","volume":"189 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130610055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
期刊
Public–Private Partnerships for Infrastructure Development
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:481959085
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