Socio-economic Planning Sciences最新文献

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Variable RTS in hierarchical network DEA: Enhancing efficiency in higher education systems 分层网络 DEA 中的可变 RTS:提高高等教育系统的效率
IF 6.2 2区 经济学
Socio-economic Planning Sciences Pub Date : 2024-11-20 DOI: 10.1016/j.seps.2024.102112
Siwei Xiao , Marios Kremantzis , Leonidas Sotirios Kyrgiakos , Aniekan Essien , George Vlontzos
{"title":"Variable RTS in hierarchical network DEA: Enhancing efficiency in higher education systems","authors":"Siwei Xiao ,&nbsp;Marios Kremantzis ,&nbsp;Leonidas Sotirios Kyrgiakos ,&nbsp;Aniekan Essien ,&nbsp;George Vlontzos","doi":"10.1016/j.seps.2024.102112","DOIUrl":"10.1016/j.seps.2024.102112","url":null,"abstract":"<div><div>This study presents a novel approach to Network Data Envelopment Analysis (DEA) by introducing “Returns to Scale (RTS) separation” within a hierarchical network DEA framework. Traditional DEA models, which often assume constant RTS, face limitations when analysing complex multi-functional structures. The proposed method, Variable RTS in Hierarchical Network DEA (VRS-HNDEA), addresses these limitations by integrating variable RTS, enabling a detailed efficiency analysis across hierarchical systems with heterogeneous sub-units. By utilising free variables, this model establishes distinct efficiency planes for simultaneous benchmarking of diverse subsystems, yielding a global efficiency frontier through the Minkowski addition of sub-system sets and analysed using an input-oriented enveloped form. Applied specifically to the higher education sector, the VRS-HNDEA model provides insights into the operational efficiency of various academic functions, including teaching, research, and administration. Key findings from this application demonstrate the model's ability to capture efficiency variations across hierarchical levels, supporting nuanced decisions on resource allocation and scale optimization. This framework, with its capability to recognise scale diversity across sub-systems, offers a significant tool for enhancing efficiency assessment in multi-layered public sector contexts, such as higher education, where comprehensive resource management is crucial.</div></div>","PeriodicalId":22033,"journal":{"name":"Socio-economic Planning Sciences","volume":"96 ","pages":"Article 102112"},"PeriodicalIF":6.2,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Social insurance contributions and labor income share—Evidence from China's Social Insurance Law 社会保险缴费与劳动收入分担——来自中国社会保险法的证据
IF 6.2 2区 经济学
Socio-economic Planning Sciences Pub Date : 2024-11-19 DOI: 10.1016/j.seps.2024.102103
Yadong Cui , Jun Liang , Wei Wang
{"title":"Social insurance contributions and labor income share—Evidence from China's Social Insurance Law","authors":"Yadong Cui ,&nbsp;Jun Liang ,&nbsp;Wei Wang","doi":"10.1016/j.seps.2024.102103","DOIUrl":"10.1016/j.seps.2024.102103","url":null,"abstract":"<div><div>This paper analyzes the impact of social insurance contributions on the labor income share and its mechanisms, based on the exogenous policy shock of the implementation of the China's Social Insurance Law, by constructing a theoretical model and using the DID method. The results show that the increase in the social insurance contribution resulting from the implementation of the Law significantly increased the capital-labor ratio of firms, which in turn increased the labor income share. After the decomposition of the labor income share, it is found that the increase in the labor income share due to the increase in the level of social insurance contributions is attributable to the increase in per capita labor compensation exceeding the increase in labor productivity. After the implementation of the Law, the labor income share increased more for firms that were subject to stricter tax control, stronger labor protection, more difficult cost shifting, smaller elasticity of factor substitution, and weaker degree of financing constraints. This study better explains the phenomenon of China's labor income share rebound, provides empirical evidence from developing countries to increase the labor income share, and emphasizes the importance of protecting workers' social insurance rights and interests and regulating firms' social insurance contribution behavior to increase the labor income share, which helps to deepen the understanding of the role of social insurance system reform in regulating income distribution.</div></div>","PeriodicalId":22033,"journal":{"name":"Socio-economic Planning Sciences","volume":"97 ","pages":"Article 102103"},"PeriodicalIF":6.2,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
I like participatory museums but, how much? Embedding demand-side value in assessing strategies 我喜欢参与式博物馆,但喜欢多少?将需求方价值纳入评估战略
IF 6.2 2区 经济学
Socio-economic Planning Sciences Pub Date : 2024-11-17 DOI: 10.1016/j.seps.2024.102111
Jonathan Daniel Gómez-Zapata , María José Del Barrio-Tellado , Fátima Espinosa-Casero , Luis César Herrero-Prieto
{"title":"I like participatory museums but, how much? Embedding demand-side value in assessing strategies","authors":"Jonathan Daniel Gómez-Zapata ,&nbsp;María José Del Barrio-Tellado ,&nbsp;Fátima Espinosa-Casero ,&nbsp;Luis César Herrero-Prieto","doi":"10.1016/j.seps.2024.102111","DOIUrl":"10.1016/j.seps.2024.102111","url":null,"abstract":"<div><div>In contrast to traditional models of unidirectional management, new governance strategies of cultural institutions based on participatory models –grounded on the active involvement of multiple actors in management, programming, production and innovation– have gained importance over the last few years. Our aim is to evaluate a participatory approach action programme for a sample of museums, embedding the value allocated by the museum community (users and beneficiaries) to the whole model and to the different participatory strategies. We first identify four main areas of participation (collaborative co-governance, creative co-production, social co-innovation, and technological co-innovation), which in turn are divided into four specific options ranked from the highest to the lowest degree of engagement. We also add a fifth dimension –a price vector– which serves as a payment vehicle to estimate the willingness to pay for the model and options. Non-market goods valuation techniques –contingent valuation and discrete choice experiment– are used to estimate the value allocated by the museum community to participatory strategies. Results show that citizens still rely more on cultural management and programming led by museum managers, rather than being involved in their design and guidance, although they do appreciate the possibilities of being involved in the dimensions of social actions and technological innovation.</div></div>","PeriodicalId":22033,"journal":{"name":"Socio-economic Planning Sciences","volume":"96 ","pages":"Article 102111"},"PeriodicalIF":6.2,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
COVID-19 and the changing profiles of poverty in India: A fuzzy set analysis and imputation approach using PLFS data
IF 6.2 2区 经济学
Socio-economic Planning Sciences Pub Date : 2024-11-16 DOI: 10.1016/j.seps.2024.102110
Fernando Flores Tavares , Alessandro Carraro
{"title":"COVID-19 and the changing profiles of poverty in India: A fuzzy set analysis and imputation approach using PLFS data","authors":"Fernando Flores Tavares ,&nbsp;Alessandro Carraro","doi":"10.1016/j.seps.2024.102110","DOIUrl":"10.1016/j.seps.2024.102110","url":null,"abstract":"<div><div>This paper has the double aim of contributing to the debate on poverty in India by looking at the changing poverty profiles during the pandemic and addressing the challenges posed by the longstanding data limitations for poverty analysis. We use a fuzzy-set methodology to assess the changes in poverty characteristics over time and a stochastic multiple imputation method to enhance the accuracy of the PLFS data. Our analysis encompasses both consumption- and income-based poverty, with a focus on historically marginalised groups such as children and women. We find that the post-shock economic recovery period seems to have bypassed these groups, leaving them struggling to improve their circumstances. In the consumption-based analysis, poverty is rising among larger households and casual labourers, while in the income-based analysis, households with children and working-age women are increasingly affected, with a growing gender disparity and a strong association with low-skilled jobs.</div></div>","PeriodicalId":22033,"journal":{"name":"Socio-economic Planning Sciences","volume":"98 ","pages":"Article 102110"},"PeriodicalIF":6.2,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143134442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A hybrid MCDM framework for assessing urban competitiveness: A case study of European cities 评估城市竞争力的混合 MCDM 框架:欧洲城市案例研究
IF 6.2 2区 经济学
Socio-economic Planning Sciences Pub Date : 2024-11-14 DOI: 10.1016/j.seps.2024.102109
Özcan Işık , Mohsin Shabir , Sarbast Moslem
{"title":"A hybrid MCDM framework for assessing urban competitiveness: A case study of European cities","authors":"Özcan Işık ,&nbsp;Mohsin Shabir ,&nbsp;Sarbast Moslem","doi":"10.1016/j.seps.2024.102109","DOIUrl":"10.1016/j.seps.2024.102109","url":null,"abstract":"<div><div>Achieving high performance in long-term sustainability is crucial for urban areas. Comparative analysis of cities based on specific indicators over time offers valuable insights for stakeholders involved in urban development and enhances the understanding of city performance. This study tackles the challenge of ranking major cities based on multidimensional performance using a multiple-criteria decision-making (MCDM) approach. We introduce a novel hybrid MCDM framework that integrates Logarithmic Percentage Change-driven Objective Weighting (LOPCOW), CRiteria Importance Through Inter-criteria Correlation (CRITIC), and Aczel-Alsina Weighted ASsessment (ALWAS). The results derived from the data-driven linear weighting strategy combining the outputs from LOPCOW and CRITIC indicate that the three most influential drivers influencing the competitive levels of the analyzed cities are livability, environment, and accessibility, respectively. The findings of ALWAS, responsible for the city rankings, show that London is the most successful city with respect to competitive performance among the leading European cities in the sample. Additionally, the effectiveness of the proposed framework is illustrated through a case study evaluating the global competitiveness of European cities. Sensitivity and comparison analyses confirm the stability and reliability of the results, validating the robustness of the proposed approach.</div></div>","PeriodicalId":22033,"journal":{"name":"Socio-economic Planning Sciences","volume":"96 ","pages":"Article 102109"},"PeriodicalIF":6.2,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modeling and managing resilience and risk for interdependent networks 为相互依赖的网络建模和管理弹性和风险
IF 6.2 2区 经济学
Socio-economic Planning Sciences Pub Date : 2024-11-12 DOI: 10.1016/j.seps.2024.102105
Felipe Aros-Vera , Shital Thekdi
{"title":"Modeling and managing resilience and risk for interdependent networks","authors":"Felipe Aros-Vera ,&nbsp;Shital Thekdi","doi":"10.1016/j.seps.2024.102105","DOIUrl":"10.1016/j.seps.2024.102105","url":null,"abstract":"<div><div>Catastrophic events have the potential to cause major disruptions to interdependent networks such as supply chains, critical infrastructures and other networks that are vital for the functioning of our society. Addressing the resilience and risk of compromised networks is challenging due to a variety of factors. First, these networks are becoming increasingly interdependent, such that network recovery is contingent upon recovery in connected networks. Additionally, interdependent networks may have multiple functions, system users, owners, and stakeholders. There is a need for data-informed decision-making models that address resilience and risk for these interdependent infrastructure networks. We address these issues by: 1) Modeling interdependencies among infrastructure networks using a multi-layer interdependent network framework, 2) Quantifying the relationship between network resilience and the inter-network connection structure, and 3) Supporting management and strategic decision-making for investment in inter-network connection structures, supporting risk mitigation needs and strategies. Our paper combines network optimization and network science methods to produce a unified framework to analyze resilience. We apply the methods of this paper to the interdependent infrastructure network of Puerto Rico following the 2017 Hurricane Maria. This paper supports decision-making for data-informed resilience management for interdependent infrastructure networks.</div></div>","PeriodicalId":22033,"journal":{"name":"Socio-economic Planning Sciences","volume":"97 ","pages":"Article 102105"},"PeriodicalIF":6.2,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Impact of family members’ perception bias on service strategies of elder care institutions
IF 6.2 2区 经济学
Socio-economic Planning Sciences Pub Date : 2024-11-12 DOI: 10.1016/j.seps.2024.102107
Xiaoxiao Wang, Changyong Liang
{"title":"Impact of family members’ perception bias on service strategies of elder care institutions","authors":"Xiaoxiao Wang,&nbsp;Changyong Liang","doi":"10.1016/j.seps.2024.102107","DOIUrl":"10.1016/j.seps.2024.102107","url":null,"abstract":"<div><div>Family members play an important role in the decision-making process of the elderly in accepting elder care services, which inevitably influences the operational strategy of elder care institutions (ECIs). Previous literature has focused on the disagreements between the elderly and their family members, but a research gap remains in examining the effects of family members' perception bias on ECIs' decisions to outsource service and on the elder care service market in general. Our study bridges this gap by employing a game-theoretic model that incorporates monopoly and duopoly markets to explore these effects. Our findings indicate that family members' perception bias for ECIs' services negatively impacts ECIs' prices, demand, and profit. Moreover, we find that in the monopoly market, an ECI should adopt the outsourcing strategy to reduce losses if family members' perception bias is higher. In the duopoly market, when family members' perception bias is higher, if one ECI adopts the outsourcing strategy, then the other ECI should opt for the self-providing strategy, and vice versa. Furthermore, we observe that a higher perception bias decreases family surplus and social welfare in the monopoly market. However, it may sometimes benefit family surplus and social welfare in the duopoly market. Our results offer insightful takeaways for ECIs' operational strategies and policymakers’ welfare policies in the elder care service market.</div></div>","PeriodicalId":22033,"journal":{"name":"Socio-economic Planning Sciences","volume":"98 ","pages":"Article 102107"},"PeriodicalIF":6.2,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143134550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Low-carbon route optimization model for multimodal freight transport considering value and time attributes 考虑价值和时间属性的多式货运低碳路线优化模型
IF 6.2 2区 经济学
Socio-economic Planning Sciences Pub Date : 2024-11-10 DOI: 10.1016/j.seps.2024.102108
Xinghui Chen , Xinghua Hu , Haobing Liu
{"title":"Low-carbon route optimization model for multimodal freight transport considering value and time attributes","authors":"Xinghui Chen ,&nbsp;Xinghua Hu ,&nbsp;Haobing Liu","doi":"10.1016/j.seps.2024.102108","DOIUrl":"10.1016/j.seps.2024.102108","url":null,"abstract":"<div><div>As the international community increasingly focuses on climate change, optimizing low-carbon transportation routes in the multimodal freight transport system has become a pressing issue. However, due to the variability in cargo properties and the influence of various factors on transportation route decisions, formulating a low-carbon and economical multimodal freight transport plan remains a significant challenge. To address the issue, this study considered cargoes with different attributes in terms of both value and time attributes. Triangular fuzzy numbers were employed to represent the uncertain demand for cargo, with confidence levels introduced for clarification. A low-carbon route decision optimization model for multimodal freight transport was established to minimize the combined transportation carbon emission and time costs. The catastrophe adaptive genetic algorithm, based on Monte Carlo sampling, was employed to solve the model using arithmetic examples. Finally, parameter sensitivity analysis revealed that adjustments to carbon tax values and changes in the proportion of electric trucks and green electricity supply had the most significant impact on the low-carbon route decision-making plan for multimodal freight transport. For low value-added and timeliness-strong cargo, a 60 % increase in carbon tax value shifted the mode of transportation from road to railway. When the carbon tax increased by more than 140 %, the transportation mode shifted from railway to waterway. Additionally, when the proportion of electric trucks and green electricity supply both exceeded 80 %, the transportation mode between some city nodes shifted from railway to road. When these proportions increased beyond 90 %, road transportation became the predominant mode.</div></div>","PeriodicalId":22033,"journal":{"name":"Socio-economic Planning Sciences","volume":"96 ","pages":"Article 102108"},"PeriodicalIF":6.2,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Measurement and comparison of different dimensions of renewable energy policy implementation in the agricultural sector 衡量和比较农业部门实施可再生能源政策的不同方面
IF 6.2 2区 经济学
Socio-economic Planning Sciences Pub Date : 2024-11-09 DOI: 10.1016/j.seps.2024.102106
Somayeh Dehhaghi , Shahla Choobchian , Hossein Azadi
{"title":"Measurement and comparison of different dimensions of renewable energy policy implementation in the agricultural sector","authors":"Somayeh Dehhaghi ,&nbsp;Shahla Choobchian ,&nbsp;Hossein Azadi","doi":"10.1016/j.seps.2024.102106","DOIUrl":"10.1016/j.seps.2024.102106","url":null,"abstract":"<div><div>The current research aims to measure the different dimensions of renewable energy policy implementation and compare these dimensions with each other, focusing on Iran's agricultural sector. This analysis makes it possible to identify the strengths and weaknesses in implementing existing policies. The five dimensions include “organizational and institutional”, “incentives”, “investment”, “infrastructure”, and “human resources development”. The statistical population of this research comprised energy policy experts, whose number was 85. The sampling method was random, and 70 persons participated in answering the questionnaire using the Karjesi and Morgan table. A questionnaire was used to collect data. The reliability of the questionnaire was calculated using Cronbach's alpha (0.916). Face validity, content validity ratio (CVR), and content validity index (CVI) were applied to determine validity. In the calculation of CVR, values ≥ 0.33 were considered reasonable and appropriate to confirm each item. All CVI values obtained were higher than 0.79. Multi-criteria analysis was used to analyze the data. The results indicated that organizational and institutional policies were at the highest level of unsustainability. The dimension of investment policies showed less unsustainability than other dimensions. The other three dimensions also showed significant deficiencies. It seems that policy development to eliminate the diversity and interference of organizations, fuel subsidies revision, market policy development, attracting capital, and participation of stakeholders is necessary to reduce unsustainability in this field. The development of the resources of expert forces and attention to educational policies should also be considered.</div></div>","PeriodicalId":22033,"journal":{"name":"Socio-economic Planning Sciences","volume":"96 ","pages":"Article 102106"},"PeriodicalIF":6.2,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Performance evaluation of child welfare departments using Data Envelopment Analysis: A comparative study across US states 利用数据包络分析法对儿童福利部门进行绩效评估:美国各州比较研究
IF 6.2 2区 经济学
Socio-economic Planning Sciences Pub Date : 2024-11-05 DOI: 10.1016/j.seps.2024.102101
Sepideh Sedghi , Shima Azizi , Katherine Canada , Vincent Charles , Andrew C. Trapp
{"title":"Performance evaluation of child welfare departments using Data Envelopment Analysis: A comparative study across US states","authors":"Sepideh Sedghi ,&nbsp;Shima Azizi ,&nbsp;Katherine Canada ,&nbsp;Vincent Charles ,&nbsp;Andrew C. Trapp","doi":"10.1016/j.seps.2024.102101","DOIUrl":"10.1016/j.seps.2024.102101","url":null,"abstract":"<div><div>Public child welfare agencies play a pivotal role in safeguarding the well-being of children and thus, the future of our society. While the performance of child welfare agencies is of critical importance, limited previous research relying on operations research and advanced analytics appears to exist in the analysis of their performance. We conduct a multi-criteria analysis for benchmarking the performance of the United States child welfare system, using Data Envelopment Analysis (DEA) to evaluate the performance of public child welfare agencies across different US states. We select as outputs various statewide data indicators from the Child and Family Services Review (CFSR), while our inputs include the total annual expenditure by each state on the child welfare system. We use clustering to differentiate agencies based on the presence of the “Alternative Response” policy, which provides for preventive and support options for families, and apply DEA to each homogeneous cluster. We identify best-practice agencies and provide benchmarks for the remaining agencies to enhance their performance. Our study offers data-driven directions for child welfare agencies to improve safety and permanency outcomes for children.</div></div>","PeriodicalId":22033,"journal":{"name":"Socio-economic Planning Sciences","volume":"97 ","pages":"Article 102101"},"PeriodicalIF":6.2,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142700839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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