International Journal of Economics and Management最新文献

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Association of Tax Haven and Corporate Tax Avoidance: Does Political Connection Matter? 避税天堂与企业避税协会:政治关系重要吗?
International Journal of Economics and Management Pub Date : 2022-01-01 DOI: 10.47836/ijeamsi.16.1.001
Lulus Kurniasih, Y. Yusri, Ahmad Fahmi SYEKH HASSAN
{"title":"Association of Tax Haven and Corporate Tax Avoidance: Does Political \u0000Connection Matter?","authors":"Lulus Kurniasih, Y. Yusri, Ahmad Fahmi SYEKH HASSAN","doi":"10.47836/ijeamsi.16.1.001","DOIUrl":"https://doi.org/10.47836/ijeamsi.16.1.001","url":null,"abstract":"This study specifically examines the association between tax haven and corporate tax avoidance, along with the role of political connection in the association. We use two types of corporate tax avoidance measurements to capture corporate tax avoidance as a whole and the specific profit-shifting scheme. Based on the data of Indonesian multinational companies (MNC) over the 2010–2019 period, we find that MNC with tax haven affiliation is positively associated with corporate tax avoidance. Moreover, our result indicates that political connection significantly moderates the association of tax haven affiliation and corporate tax avoidance.","PeriodicalId":40031,"journal":{"name":"International Journal of Economics and Management","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80127734","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: 0
A minimum spanning tree analysis of the Polish stock market 波兰股票市场的最小生成树分析
International Journal of Economics and Management Pub Date : 2022-01-01 DOI: 10.22367/jem.2022.44.17
Artur F. Tomeczek
{"title":"A minimum spanning tree analysis of the Polish stock market","authors":"Artur F. Tomeczek","doi":"10.22367/jem.2022.44.17","DOIUrl":"https://doi.org/10.22367/jem.2022.44.17","url":null,"abstract":"Abstract Aim/purpose – This article aims to explore the network topology of the stock market in Poland during the COVID-19 pandemic. Design/methodology/approach – Kruskal’s algorithm was used to find the minimum spanning trees (MST) of three undirected correlation networks: MST1 (December 2019 – August 2021), MST2 (February 2020 – April 2020), and MST3 (June 2021 – August 2021). There were123 firms included in all three networks representing three key indexes (WIG20, mWIG40, and sWIG80). Findings – The comovements of stock prices varied between various periods of the pandemic. The most central firms in Poland were PEO, UNT, SPL, PKO, KGH, CCC, and PZU. WIG20 was the most influential stock index for all networks. During the turbulent period represented by MST2, many of Poland’s largest companies have clustered around KGH at the center of the network. In contrast, MST3 is the least compact of the three networks and is characterized by the absence of a single strongly influential node. Research implications/limitations – Correlation networks are efficient at quantitatively describing the degree of interdependence of a stock. MST finding algorithms are a crucial method of analysis for correlation networks. However, a limitation of the study, inherent to undirected correlation networks, is the inability to determine the direction of influence that stocks have on each other. Originality/value/contribution – The results of the article contribute to the economic analysis of stock markets in several ways. First, it expands on Gałązka (2011) by including additional centralities and the dynamic aspect of changes in the topology during the COVID-19 pandemic. Second, it broadens the MST-based empirical research of stock markets by showing the emergence of the star topology during the period of high uncertainty in Poland. Third, it has practical applications for systemic risk assessment and portfolio diversification.","PeriodicalId":40031,"journal":{"name":"International Journal of Economics and Management","volume":"23 1","pages":"420 - 445"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82531626","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: 0
A study of the relationship between online movie reviews and the intention to watch the movie 网络影评与观影意愿关系研究
International Journal of Economics and Management Pub Date : 2022-01-01 DOI: 10.22367/jem.2022.44.14
Hwai-Shuh Shieh, Szu-Yu Lin
{"title":"A study of the relationship between online movie reviews and the intention to watch the movie","authors":"Hwai-Shuh Shieh, Szu-Yu Lin","doi":"10.22367/jem.2022.44.14","DOIUrl":"https://doi.org/10.22367/jem.2022.44.14","url":null,"abstract":"Abstract Aim/purpose – This study explores how the content feature and source of eWOM affect people’s intentions and further analyses the effectiveness of eWOM on people’s intention to watch movies. Design/methodology/approach – The study considers two dimensions of movie reviews, including the source (anonymous or acquaintance) and the content feature (concrete or abstract), adopts a 2x2 between-subject design, and then analyzes online questionnaires (N = 313) via statistics analysis methods. Findings – The findings showed that if the source is from an acquaintance and the content feature is concrete, then people will have the highest intention to watch the movie. In addition, the acting skills of the cast and the love of the movie genre also enhance the positive influence on the viewer’s experience. Research implications/limitations – The respondents were selected only in Taiwan so this paper do not explain any differences among different countries. For example, cultural differences exist between the West and the East in the content feature of eWOM. Originality/value/contribution – If a type of genre is greatly accepted by the audience and generates huge box-office revenue, then producers and movie companies might keep making movies in these kinds of genre to secure profits. Therefore, box-office movies will usually fall into these certain types of genres, and there will be an abundance of them released in the near future.","PeriodicalId":40031,"journal":{"name":"International Journal of Economics and Management","volume":"10 2","pages":"344 - 375"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72412840","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
Linear and nonlinear shelf space allocation problems with vertical and horizontal bands 垂直带和水平带的线性和非线性货架空间分配问题
International Journal of Economics and Management Pub Date : 2022-01-01 DOI: 10.22367/jem.2022.44.06
Kateryna Czerniachowska, Krzysztof Lutosławski, Marcin Hernes
{"title":"Linear and nonlinear shelf space allocation problems with vertical and horizontal bands","authors":"Kateryna Czerniachowska, Krzysztof Lutosławski, Marcin Hernes","doi":"10.22367/jem.2022.44.06","DOIUrl":"https://doi.org/10.22367/jem.2022.44.06","url":null,"abstract":"Abstract Aim/purpose – Shelf space is one of the most important tools for attracting customers’ attention in a retail store. This paper aims to develop a practical shelf space allocation model with visible vertical and horizontal categories. and formulate it in linear and non-linear forms. Design/methodology/approach – The research is mainly based on operational research. Simulation, mathematical optimization, and linear and nonlinear programming methods are mainly used. Special attention is given to the decision variables and constraints. Changing the dimensioning of the decision variables results in an improvement in the formulation of the problem, which in turn allows for obtaining an optimal solution. Findings – A comparison of the developed shelf space allocation models with visible vertical and horizontal categories in linear and nonlinear forms is presented. The computational experiments were performed with the help of CPLEX solver, which shows that the optimal solution of the linear problem formulation was obtained within a couple of seconds. However, a nonlinear form of this problem found the optimal solution only in 19 out of 45 instances. An increase in the time limits slightly improves the performance of the solutions of the nonlinear form. Research implications/limitations – The main implication of research results for science is related to the possibility of determining an optimal solution to the initially formulated nonlinear shelf space allocation problem. The main implication for practice is to take into consideration the practical constraints based on customers’ requirements. The main limitations are the lack of storage conditions and holding time constraints. Originality/value/contribution – The main contribution is related to developing mathematical models that consider simultaneous categorization of products vertically, based on one characteristic, and horizontally, based on another characteristic. Contribution is also related to extending the shelf space allocation theory with the shelf space allocation problem model in relation to four sets of constraints: shelf constraints, product constraints, orientation constraints, and band constraints.","PeriodicalId":40031,"journal":{"name":"International Journal of Economics and Management","volume":"37 1","pages":"119 - 141"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90103344","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
A statistical approach to modeling the underground economy in South Africa 南非地下经济建模的统计方法
International Journal of Economics and Management Pub Date : 2022-01-01 DOI: 10.22367/jem.2022.44.04
C. T. Koloane, Oliver Bodhlyera
{"title":"A statistical approach to modeling the underground economy in South Africa","authors":"C. T. Koloane, Oliver Bodhlyera","doi":"10.22367/jem.2022.44.04","DOIUrl":"https://doi.org/10.22367/jem.2022.44.04","url":null,"abstract":"Abstract Aim/purpose – The underground economy is a major challenge across the world affecting both developed and developing economies. South Africa is no exception to this phenomenon and has lost billions of rands due to the underground economy. The aim of this study is to estimate the size of the underground economy in South Africa. Design/methodology/approach – The study used quarterly time series data from 2000 to 2020 and employed the Currency Demand Approach (CDA) for modeling the underground economy. Findings – The model results revealed that the underground economy is positively influenced by unemployment rate, tax burden, and social benefits granted by the government, however it is negatively influenced by Nominal Gross Domestic Product (NGDP), deposit interest rate, and self-employment rate. Furthermore, the study showed that there was a distinct growth of the underground economy, from 23.9% of GDP in 2003 to 34.5% of GDP in 2019. On average, the underground economy represented 28.8% of GDP for the period 2003 to 2020. Research implications/limitations – This model can be used in conjunction with other models to observe the trend in the South African underground economic activities. The South African government should take note of the spiraling growth of this economy and come up with measures to curb this growth to protect the formal economy. Originality/value/contribution – This study makes a significant contribution to the body of knowledge in this research area and provides much needed insights into the magnitude of the underground economy and the extent of tax evasion in South Africa.","PeriodicalId":40031,"journal":{"name":"International Journal of Economics and Management","volume":"18 1","pages":"64 - 95"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78419965","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
Technical Efficiency of Firms, A Comparison Study for Family and Non-Family-Owned Businesses in Southeast Asian Countries 企业技术效率:东南亚国家家族企业与非家族企业的比较研究
International Journal of Economics and Management Pub Date : 2022-01-01 DOI: 10.47836/ijeamsi.16.1.002
Wai WAH WONG, M. Yahya, A. Ariffin, Tze San Ong
{"title":"Technical Efficiency of Firms, A Comparison Study for Family and Non-Family-Owned Businesses in Southeast Asian Countries","authors":"Wai WAH WONG, M. Yahya, A. Ariffin, Tze San Ong","doi":"10.47836/ijeamsi.16.1.002","DOIUrl":"https://doi.org/10.47836/ijeamsi.16.1.002","url":null,"abstract":"This is a comparative study on firm efficiency, a proxy for firm performance, between family-owned business (FOB) and non-family-owned business (non-FOB). This study aims to determine a firms' efficiency by comparing FOB and non-FOB in Southeast Asia countries. The efficiency ratios for five Southeast Asian countries were estimated using Data Envelopment Analysis (DEA), before a two-sample T-test to determine the differences between FOBs and non-FOBs. Hence, secondary data research techniques from each country from 2007 to 2016 were used to conduct the comparison. The data were gathered from various sources. The findings did not archive any comparison in performance among FOBs and non-FOBs. This finding is fundamental for the Board of Director (BOD), senior management of the firms, researchers, policymakers, scholastics, and the overall population., Ceteris paribus, both FOB and non-FOB, ought to work at a similar efficiency even out and have the option to produce comparative returns for their shareholders. Subsequently, stakeholders can compare treatments to assist in alleviating the dependency on two unique treatments or strategies when managing FOB and non- FOB. In short, it could expand the BOD and management efficiency.","PeriodicalId":40031,"journal":{"name":"International Journal of Economics and Management","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82330031","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: 0
The moderating effect of positive word-of-mouth between service quality and customer loyalty in the hospitality sector: A PLS-SEM approach 正面口碑在酒店服务质量和顾客忠诚度之间的调节作用:PLS-SEM方法
International Journal of Economics and Management Pub Date : 2022-01-01 DOI: 10.22367/jem.2022.44.11
Silas Gontur, P. D. Gadi, E. Bagobiri
{"title":"The moderating effect of positive word-of-mouth between service quality and customer loyalty in the hospitality sector: A PLS-SEM approach","authors":"Silas Gontur, P. D. Gadi, E. Bagobiri","doi":"10.22367/jem.2022.44.11","DOIUrl":"https://doi.org/10.22367/jem.2022.44.11","url":null,"abstract":"Abstract Aim/purpose – The main objective of this research is to investigate the relationship between service quality and customer loyalty and the moderating effect of positive word-of-mouth on this relationship in the hospitality sector, in North Central Nigeria. Design/methodology/approach – The research adopted a quantitative technique. Data were collected through a survey technique and Statistical Package for Social Science (SPSS) version 25.0 was used for descriptive analysis. Then SmartPLS 3.3.7 was employed to examine relations between service quality, customer loyalty, and positive word-of-moth. Findings – The current study confirmed that service quality had a significant positive relationship with customer loyalty and positive word-of-mouth moderates the relationship between service quality and customer loyalty. Research implications/limitations – The current study looked at the moderating effect of positive word-of-mouth on the relationship between service quality and customer loyalty in relation to the hospitality sector in North Central Nigeria. Originality/value/contribution – Examination of the moderating role of positive word- -of-mouth in this study has aided to fit into the literature gap.","PeriodicalId":40031,"journal":{"name":"International Journal of Economics and Management","volume":"31 1","pages":"266 - 285"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87955260","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 impact of the COVID-19 pandemic on peer-to-peer accommodation businesses: The case of Airbnb COVID-19大流行对点对点住宿业务的影响:以Airbnb为例
International Journal of Economics and Management Pub Date : 2022-01-01 DOI: 10.22367/jem.2022.44.12
Ewa E. Kiczmachowska
{"title":"The impact of the COVID-19 pandemic on peer-to-peer accommodation businesses: The case of Airbnb","authors":"Ewa E. Kiczmachowska","doi":"10.22367/jem.2022.44.12","DOIUrl":"https://doi.org/10.22367/jem.2022.44.12","url":null,"abstract":"Abstract Aim/purpose – This study aims to examine the impact of the COVID-19 pandemic on peer-to-peer accommodation (P2PA), investigate the potential factors related to organizational resilience based on resilience resources and consumer threat response frameworks, and revisit the tourism disaster management framework. Design/methodology/approach – The operational Key Performance Indicators (KPIs) were analyzed in relation to host professionalism (organizational resilience) and property exposure to social contact (consumer threat response) for 23,334 properties available via the Airbnb platform. A regression model was proposed to estimate the impact of government policies on P2PA business performance. Findings – The revenue, the occupancy rate, and the number of active properties decreased by –59.1%, –41.3%, and –20.4%, respectively. Professional hosts and properties offering less social contact showed lower declines in revenue and occupancy rate and their proportion in properties that survived 12 months after the pandemic breakout was higher. The consecutive waves of COVID-19 infections created a need to include a repetitive exchange of emergency and intermediate stages before the recovery stage could be started. Research implications/limitations – For P2PA hosts, this study could serve as a useful contribution to shaping their tactics given the COVID-19 pandemic continuation or similar disaster to happen in the future. For governments or local authorities, this study should contribute to a better understanding of the impacts of various types of restrictions on accommodation segment performance. The limitation of this research is that it refers to big cities, extending it to rural destinations might reveal valuable insights. Additionally, it would be interesting to compare P2PA performance with other segments of the hospitality sector (e.g., hotels). Originality/value/contribution – This study contributes to the knowledge of tourism disaster management, organizational resilience, and consumer threat response frameworks. It reveals potential factors related to property resilience in the face of disease-related disasters and proposes a revised framework for tourism disaster management.","PeriodicalId":40031,"journal":{"name":"International Journal of Economics and Management","volume":"28 1","pages":"286 - 314"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73683702","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
External aid behavior in the recipient economy: A probit regression for Africa 受援国经济中的外援行为:非洲的概率回归
International Journal of Economics and Management Pub Date : 2022-01-01 DOI: 10.22367/jem.2022.44.01
A. Adediyan, Oseremen ThankGod Ehisuoria
{"title":"External aid behavior in the recipient economy: A probit regression for Africa","authors":"A. Adediyan, Oseremen ThankGod Ehisuoria","doi":"10.22367/jem.2022.44.01","DOIUrl":"https://doi.org/10.22367/jem.2022.44.01","url":null,"abstract":"Abstract Aim/purpose – External aid allocation by the donors in recent years has been fraught with instability and volatility. This has a negative consequence on the recipient economies particularly those that are highly aid-dependent. A good solution to the problem requires much understanding of factors influencing the behavior of external aid in the respective recipient economy. In this study, the focus was on analyzing two economic factors uncommonly discussed in the empirical literature – the influence of the degree of economic freedom and external debt burden on aid allocation, with emphasis on African economy. Design/methodology/approach – The study constructs a probit model for the analysis using a panel dataset consisting of 48 African countries from 2010 to 2019. Findings – The key findings of the study include a significant positive effect of economic freedom on aid and it implies that the probability of an additional external aid allocation to African countries increases with an increase in the degree of economic freedom. However, external debt burden, albeit positive, is not statistically significant to motivate more external aid allocations to Africa over the sample period. Research implications/limitations – Hence, the pattern of external aid inflows in Africa is a reflection of a change in the degree of economic freedom in the region. Originality/value/contribution – In contribution to filling the gap in the literature on external aid inflow in the recipient economies, the study traced external aid fluctuations in Africa to external debt burden and the extent of restriction imposed on economic freedom in African countries.","PeriodicalId":40031,"journal":{"name":"International Journal of Economics and Management","volume":"12 1","pages":"1 - 18"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83586664","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: 0
Aviation supply and demand in the São Paulo and Rio de Janeiro systems evolution: An exploratory study 圣保罗和里约热内卢系统演化中的航空供给和需求:探索性研究
International Journal of Economics and Management Pub Date : 2022-01-01 DOI: 10.22367/jem.2022.44.16
Bruno de Paula Balan, Maria Cláudia Ferreira da Cunha, Renan Cipriano da Cunha, L. Halawi
{"title":"Aviation supply and demand in the São Paulo and Rio de Janeiro systems evolution: An exploratory study","authors":"Bruno de Paula Balan, Maria Cláudia Ferreira da Cunha, Renan Cipriano da Cunha, L. Halawi","doi":"10.22367/jem.2022.44.16","DOIUrl":"https://doi.org/10.22367/jem.2022.44.16","url":null,"abstract":"Abstract Aim/purpose – Multiple factors affect a passenger’s origin and destination airport choice. This study explores some of the leading indicators associated with performance in cities with more than one airport. Two important Multi-Airport Systems (MAS) in Brazil were the object of this study: São Paulo (Congonhas and Guarulhos) and Rio de Janeiro (Santos Dumont and Galeão), the most significant demand-generating centers in the country and the most critical distribution centers of flights from South America. Design/methodology/approach – Using public databases presenting the evolution of supply and demand from 2013 to 2018, the evolution of flights, and the sales by airlines in the same period, we estimated a linear model using panel data on a multiple linear regression with fixed effects. Findings – One of the results observed is that competition between airlines positively affects prices for consumers, the industry, and tourism, which is vital for the country. Research implications/limitations – The limitation of the findings is the lack of current data. Originality/value/contribution – In filling the gap in the literature on the evolution of supply and demand in the Brazilian aviation market, the study evaluates some of the leading indicators associated with performance in cities with more than one airport.","PeriodicalId":40031,"journal":{"name":"International Journal of Economics and Management","volume":"21 1","pages":"393 - 419"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81777683","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
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