Pub Date : 2023-03-27DOI: 10.1108/jefas-08-2021-0150
V. Cherkasova, E. Fedorova, I. Stepnov
PurposeThe purpose of this paper is to determine the impact of corporate investments in corporate social responsibility (CSR), measured by the environmental, social and government (ESG) rating, on the market valuation of a firm's stocks and to explain the regional differences in the degree of this influence.Design/methodology/approachThe empirical study uses linear and non-linear panel regression models for a panel sample of 951 firms listed in Asia, North America and Europe operating in innovative industries.FindingsThe CSR score was found to be significant in terms of stock excess return on the regional level. However, this finding cannot be extrapolated to the global scale. ESG rating is priced by the European and North American markets negatively, while in the Asian market, it is positive. This penalty (negative influence) is greater than the reward for one point increase in ESG rating.Practical implicationsThe results of this empirical study could be used by firms' managers to adjust strategies aimed at stock value growth and by investors to select an investment strategy to maximize return.Originality/valueThe impact of investments in CSR on stock excess return over a defined benchmark is assessed. The study reveals regional differences in the impact of CSR investment using a sample of Asian, European and North American firms. The authors apply a more advanced lagged CSR performance (d.ESG) assessment based on the methodology of Zhang and Rajagopalan (2010).
{"title":"Market reaction to firms' investments in CSR projects","authors":"V. Cherkasova, E. Fedorova, I. Stepnov","doi":"10.1108/jefas-08-2021-0150","DOIUrl":"https://doi.org/10.1108/jefas-08-2021-0150","url":null,"abstract":"PurposeThe purpose of this paper is to determine the impact of corporate investments in corporate social responsibility (CSR), measured by the environmental, social and government (ESG) rating, on the market valuation of a firm's stocks and to explain the regional differences in the degree of this influence.Design/methodology/approachThe empirical study uses linear and non-linear panel regression models for a panel sample of 951 firms listed in Asia, North America and Europe operating in innovative industries.FindingsThe CSR score was found to be significant in terms of stock excess return on the regional level. However, this finding cannot be extrapolated to the global scale. ESG rating is priced by the European and North American markets negatively, while in the Asian market, it is positive. This penalty (negative influence) is greater than the reward for one point increase in ESG rating.Practical implicationsThe results of this empirical study could be used by firms' managers to adjust strategies aimed at stock value growth and by investors to select an investment strategy to maximize return.Originality/valueThe impact of investments in CSR on stock excess return over a defined benchmark is assessed. The study reveals regional differences in the impact of CSR investment using a sample of Asian, European and North American firms. The authors apply a more advanced lagged CSR performance (d.ESG) assessment based on the methodology of Zhang and Rajagopalan (2010).","PeriodicalId":53491,"journal":{"name":"Journal of Economics, Finance and Administrative Science","volume":"25 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78000423","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}
{"title":"Identifying Socio-cultural Factors on the Performance of Marginalized Entrepreneurs","authors":"Amalendu Bhunia, Humaira Siddika","doi":"10.12691/jfe-11-1-2","DOIUrl":"https://doi.org/10.12691/jfe-11-1-2","url":null,"abstract":"","PeriodicalId":53491,"journal":{"name":"Journal of Economics, Finance and Administrative Science","volume":"10 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75552148","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}
Arlen Cerón Islas, Juan Gabriel Figueroa Velázquez, Axel Ismael Sánchez Villalobos
The present work is a quantitative, exploratory, cross-sectional research study. The objective is to validate the relationship between satisfaction and perceived value with customer loyalty in three branches of a restaurant chain in Mexico. Smart PLS 3 software was used to process the information obtained from a sample of 208 valid questionnaires. The objective was achieved by validating, through structural equation modeling by the partial least square method, a measurement model whose constructs met the characteristics of reliability and validity. In turn, the structural model presented an acceptable level of adjustment, thus proving that there is a positive and statistically significant relationship between satisfaction and perceived value and the loyalty of restaurant customers, which supported the two hypotheses proposed.
{"title":"Perceived value and satisfaction as antecedents of loyalty to a chain restaurant in Mexico","authors":"Arlen Cerón Islas, Juan Gabriel Figueroa Velázquez, Axel Ismael Sánchez Villalobos","doi":"10.29057/jas.v4i8.9178","DOIUrl":"https://doi.org/10.29057/jas.v4i8.9178","url":null,"abstract":"The present work is a quantitative, exploratory, cross-sectional research study. The objective is to validate the relationship between satisfaction and perceived value with customer loyalty in three branches of a restaurant chain in Mexico. Smart PLS 3 software was used to process the information obtained from a sample of 208 valid questionnaires. The objective was achieved by validating, through structural equation modeling by the partial least square method, a measurement model whose constructs met the characteristics of reliability and validity. In turn, the structural model presented an acceptable level of adjustment, thus proving that there is a positive and statistically significant relationship between satisfaction and perceived value and the loyalty of restaurant customers, which supported the two hypotheses proposed. \u0000 \u0000 ","PeriodicalId":53491,"journal":{"name":"Journal of Economics, Finance and Administrative Science","volume":"8 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85130405","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}
The objective of this research was to analyse the social networks forged between individuals who work in middle and upper management in Mexican companies and their relationship with people with disabilities through the application of a Social Network Analysis (SNA) which was carried out in two phases, in the first, an instrument was applied as a survey to a pre-established population that included the General Scale of Attitudes Towards People with Disabilities (EGAHPD). In the second stage, an analysis of social networks applied to a sample that met the characteristics defined for this purpose was developed, 55 nodes and 1,590 edges were found, with 12 subjects having the greatest interaction in the network, a wide degree of closeness, which deduces that the nucleus of individuals and organizations on whom the economic development of people with disabilities depends is very centralized.
{"title":"Social networks analysis in people with disabilities in the Mexican industry","authors":"R. Ortega Garcia, Anibal Terrones Cordero","doi":"10.29057/jas.v4i8.9425","DOIUrl":"https://doi.org/10.29057/jas.v4i8.9425","url":null,"abstract":"The objective of this research was to analyse the social networks forged between individuals who work in middle and upper management in Mexican companies and their relationship with people with disabilities through the application of a Social Network Analysis (SNA) which was carried out in two phases, in the first, an instrument was applied as a survey to a pre-established population that included the General Scale of Attitudes Towards People with Disabilities (EGAHPD). In the second stage, an analysis of social networks applied to a sample that met the characteristics defined for this purpose was developed, 55 nodes and 1,590 edges were found, with 12 subjects having the greatest interaction in the network, a wide degree of closeness, which deduces that the nucleus of individuals and organizations on whom the economic development of people with disabilities depends is very centralized.","PeriodicalId":53491,"journal":{"name":"Journal of Economics, Finance and Administrative Science","volume":"32 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74496837","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}
The Covid-19 crisis, started as an endemic health crisis but it was rapidly transformed to a global pandemic. As expected, it did not leave the global economy unaffected. The prolonged interruption of the production activity and the relevant general lockdowns, led to a significant drop in production, consumption and employment. This rapid deterioration of the economic activity and the associated increase in the uncertainty for the day-after, led to a significant decline of major stock markets around the globe. Banking institutions are fighting their own battle to continue their operation uninterrupted during the pandemic. Their problem is twofold: from one hand to deal with the decline in economic activity and on the other to adapt to a new and externaly imposed model of distance-banking. In this paper, we examine the possible impact of the Covid-19 crisis on bank share prices worldwide. We also measure and compare the impact of the 2008 global financial crisis. In measuring the impact of these two crises on bank share prices, we used bank share indices from four alternative countries: Greece, Germany, the US, and China for the period 2004:1 – 2021:2. The macroeconomic variables used in this context are: exchange rates, country specific 10-year government bond interest rates, the industrial production index and inflation, all in monthly frequency. Based on the empirical results, bank shares appear, in general, resilient and unaffected by these two crises.
{"title":"Banking Sector Resilience to Major Crises","authors":"Theano Lefkou, Emmanouil Sofianos, Periklis Gogas","doi":"10.12691/jfe-11-1-1","DOIUrl":"https://doi.org/10.12691/jfe-11-1-1","url":null,"abstract":"The Covid-19 crisis, started as an endemic health crisis but it was rapidly transformed to a global pandemic. As expected, it did not leave the global economy unaffected. The prolonged interruption of the production activity and the relevant general lockdowns, led to a significant drop in production, consumption and employment. This rapid deterioration of the economic activity and the associated increase in the uncertainty for the day-after, led to a significant decline of major stock markets around the globe. Banking institutions are fighting their own battle to continue their operation uninterrupted during the pandemic. Their problem is twofold: from one hand to deal with the decline in economic activity and on the other to adapt to a new and externaly imposed model of distance-banking. In this paper, we examine the possible impact of the Covid-19 crisis on bank share prices worldwide. We also measure and compare the impact of the 2008 global financial crisis. In measuring the impact of these two crises on bank share prices, we used bank share indices from four alternative countries: Greece, Germany, the US, and China for the period 2004:1 – 2021:2. The macroeconomic variables used in this context are: exchange rates, country specific 10-year government bond interest rates, the industrial production index and inflation, all in monthly frequency. Based on the empirical results, bank shares appear, in general, resilient and unaffected by these two crises.","PeriodicalId":53491,"journal":{"name":"Journal of Economics, Finance and Administrative Science","volume":"21 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83212144","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}
Selene Yalid Juárez Montiel, Zeus Salvador Hernández Veleros
After the current economic crisis derived from the global pandemic, the deterioration that the Mexican economy had already been showing worsened and with the measures implemented such as confinement and the austerity policy, it is prudent to analyse the behaviour of tax collection during the last years. Therefore, in the present work, studies through the X-12 trend-cycle decomposition the dynamics of federal collection with respect to the economic dynamics reflected in the Global Index of Economic Activity (IGAE) and in Private Consumption in the period 2018.01-2022.02. The results allow us to conclude that the poor performance of the economic activity is prior to the pandemic and that it worsened even more during the period, while for tax collection this was not the case, it even reached its historical maximum points in 2021; which implied a very contractionary fiscal policy and for this reason the recovery of our country has been so short.
{"title":"Dynamics of tax collection in Mexico during January 2018-February 2022","authors":"Selene Yalid Juárez Montiel, Zeus Salvador Hernández Veleros","doi":"10.29057/jas.v4i8.9504","DOIUrl":"https://doi.org/10.29057/jas.v4i8.9504","url":null,"abstract":"After the current economic crisis derived from the global pandemic, the deterioration that the Mexican economy had already been showing worsened and with the measures implemented such as confinement and the austerity policy, it is prudent to analyse the behaviour of tax collection during the last years. Therefore, in the present work, studies through the X-12 trend-cycle decomposition the dynamics of federal collection with respect to the economic dynamics reflected in the Global Index of Economic Activity (IGAE) and in Private Consumption in the period 2018.01-2022.02. The results allow us to conclude that the poor performance of the economic activity is prior to the pandemic and that it worsened even more during the period, while for tax collection this was not the case, it even reached its historical maximum points in 2021; which implied a very contractionary fiscal policy and for this reason the recovery of our country has been so short.","PeriodicalId":53491,"journal":{"name":"Journal of Economics, Finance and Administrative Science","volume":"8 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88405491","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}
After the declaration of the COVID 19 pandemic, jobs and occupations had to return to normal, however many people lost their main source of resources, so the incorporation of women in different ventures has been a flag to get ahead with work for their families, so the objective of this work is to identify opinions about entrepreneurs, using the technique of sentimental analysis to classify unstructured information from public tweets using for data processing, the Rstudio software with the retweet, word cloud and emo libraries collecting the feelings that people have through the microblogging platform Twitter in the period from June 20 to July 10, 2022. The results show that 74.53% of users perceive positive and very positive feelings toward women entrepreneurs, so it can be concluded that the impact of the incorporation of women entrepreneurs, which although at this time is still uncertain is perceived as an important factor for the economic recovery.
{"title":"Sentimental analysis of female entrepreneurs based on public tweets","authors":"Alejandra Vega-Barrios, Ruth Josefina Álcantara Hernández, Danae Duana-Avila","doi":"10.29057/jas.v4i8.9579","DOIUrl":"https://doi.org/10.29057/jas.v4i8.9579","url":null,"abstract":"After the declaration of the COVID 19 pandemic, jobs and occupations had to return to normal, however many people lost their main source of resources, so the incorporation of women in different ventures has been a flag to get ahead with work for their families, so the objective of this work is to identify opinions about entrepreneurs, using the technique of sentimental analysis to classify unstructured information from public tweets using for data processing, the Rstudio software with the retweet, word cloud and emo libraries collecting the feelings that people have through the microblogging platform Twitter in the period from June 20 to July 10, 2022. The results show that 74.53% of users perceive positive and very positive feelings toward women entrepreneurs, so it can be concluded that the impact of the incorporation of women entrepreneurs, which although at this time is still uncertain is perceived as an important factor for the economic recovery. ","PeriodicalId":53491,"journal":{"name":"Journal of Economics, Finance and Administrative Science","volume":"4 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73514228","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}
Pub Date : 2022-12-13DOI: 10.1108/jefas-06-2022-331
Nestor U. Salcedo
{"title":"Editorial: Journal aim and scope and ongoing positioning","authors":"Nestor U. Salcedo","doi":"10.1108/jefas-06-2022-331","DOIUrl":"https://doi.org/10.1108/jefas-06-2022-331","url":null,"abstract":"","PeriodicalId":53491,"journal":{"name":"Journal of Economics, Finance and Administrative Science","volume":"546 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86969697","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}
Pub Date : 2022-12-07DOI: 10.1108/jefas-01-2022-0028
Margarida Freitas Oliveira, Eulália Santos, V. Ratten
PurposeErrors are inevitable, resulting from the human condition itself, system failures and the interaction of both. It is essential to know how to deal with their occurrence, managing them. However, the negative tone associated with them makes it difficult for most organizations to talk about mistakes clearly and transparently, for fear of being harmed, preventing their detection, treatment and recovery. Consequently, errors are not managed, remaining accumulated in the system, turning into successive failures. Organizations need to recognize the inevitability of errors, making the system robust, through leadership and an organizational culture of error management. This study aims to understand the role of these influencing variables in an error management approach.Design/methodology/approachIn this paper methodology of a quantitative nature based on a questionnaire survey that analyses error management, leadership and the organizational culture of error management of 380 workers in Portuguese companies.FindingsThe results demonstrate that leadership directly influences error management and indirectly through the organizational culture of error management, giving this last variable a mediating role.Originality/valueThe study covers companies from different sectors of activity on a topic that is little explored in Portugal, but part of the daily life of organizations, which should deserve greater attention from directors and managers, as they assume a privileged position to promote and develop error management mechanisms. Error management must be the daily work of leaders. This study contributes to theoretical knowledge and business practice on error management.
{"title":"Strategic perspective of error management the role of leadership and an error management culture: a mediation model","authors":"Margarida Freitas Oliveira, Eulália Santos, V. Ratten","doi":"10.1108/jefas-01-2022-0028","DOIUrl":"https://doi.org/10.1108/jefas-01-2022-0028","url":null,"abstract":"PurposeErrors are inevitable, resulting from the human condition itself, system failures and the interaction of both. It is essential to know how to deal with their occurrence, managing them. However, the negative tone associated with them makes it difficult for most organizations to talk about mistakes clearly and transparently, for fear of being harmed, preventing their detection, treatment and recovery. Consequently, errors are not managed, remaining accumulated in the system, turning into successive failures. Organizations need to recognize the inevitability of errors, making the system robust, through leadership and an organizational culture of error management. This study aims to understand the role of these influencing variables in an error management approach.Design/methodology/approachIn this paper methodology of a quantitative nature based on a questionnaire survey that analyses error management, leadership and the organizational culture of error management of 380 workers in Portuguese companies.FindingsThe results demonstrate that leadership directly influences error management and indirectly through the organizational culture of error management, giving this last variable a mediating role.Originality/valueThe study covers companies from different sectors of activity on a topic that is little explored in Portugal, but part of the daily life of organizations, which should deserve greater attention from directors and managers, as they assume a privileged position to promote and develop error management mechanisms. Error management must be the daily work of leaders. This study contributes to theoretical knowledge and business practice on error management.","PeriodicalId":53491,"journal":{"name":"Journal of Economics, Finance and Administrative Science","volume":"50 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2022-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83532136","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}
Pub Date : 2022-11-14DOI: 10.1108/jefas-08-2021-0159
Simarjeet Singh, Nidhi Walia, S. Bekiros, Arushi Gupta, Jigyasu Kumar, A. Mishra
PurposeThis research study aims to design a novel risk-managed time-series momentum approach. The present study also examines the time-series momentum effect in the Indian equity market. Apart from this, the study also proposes a novel risk-managed time-series momentum approach.Design/methodology/approachThe study considers the adjusted monthly closing prices of the stocks listed on the Bombay Stock Exchange from January 1996 to December 2020 to formulate long-short portfolios. Newey–West t statistics were used to test the significance of momentum returns. The present research has considered standard risk factors, i.e. market, size and value, to evaluate the risk-adjusted performance of time-series momentum portfolios.FindingsThe present research reports a substantial absolute momentum effect in the Indian equity market. However, absolute momentum strategies are exposed to occasional severe losses. The proposed time-series momentum approach not only yields 2.5 times higher return than the standard time-series momentum approach but also causes substantial enhancement in downside risks and higher-order moments.Practical implicationsThe study's outcomes offer valuable insights for professional investors, capital market regulators and asset management companies.Originality/valueThis study is one of the pioneers attempting to test the time-series momentum effect in emerging economies. Besides, current research contributes to the escalating literature on risk-managed momentum by suggesting a novel revised time-series momentum approach.
{"title":"Risk-managed time-series momentum: an emerging economy experience","authors":"Simarjeet Singh, Nidhi Walia, S. Bekiros, Arushi Gupta, Jigyasu Kumar, A. Mishra","doi":"10.1108/jefas-08-2021-0159","DOIUrl":"https://doi.org/10.1108/jefas-08-2021-0159","url":null,"abstract":"PurposeThis research study aims to design a novel risk-managed time-series momentum approach. The present study also examines the time-series momentum effect in the Indian equity market. Apart from this, the study also proposes a novel risk-managed time-series momentum approach.Design/methodology/approachThe study considers the adjusted monthly closing prices of the stocks listed on the Bombay Stock Exchange from January 1996 to December 2020 to formulate long-short portfolios. Newey–West t statistics were used to test the significance of momentum returns. The present research has considered standard risk factors, i.e. market, size and value, to evaluate the risk-adjusted performance of time-series momentum portfolios.FindingsThe present research reports a substantial absolute momentum effect in the Indian equity market. However, absolute momentum strategies are exposed to occasional severe losses. The proposed time-series momentum approach not only yields 2.5 times higher return than the standard time-series momentum approach but also causes substantial enhancement in downside risks and higher-order moments.Practical implicationsThe study's outcomes offer valuable insights for professional investors, capital market regulators and asset management companies.Originality/valueThis study is one of the pioneers attempting to test the time-series momentum effect in emerging economies. Besides, current research contributes to the escalating literature on risk-managed momentum by suggesting a novel revised time-series momentum approach.","PeriodicalId":53491,"journal":{"name":"Journal of Economics, Finance and Administrative Science","volume":"1 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90864781","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}
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