Pub Date : 2025-09-01Epub Date: 2025-08-22DOI: 10.1016/j.jinteco.2025.104143
Utsa Banerjee , Luis Castro Peñarrieta , Pavel Chakraborty
Do firms reorganize gender composition of their employment in response to trade shocks? Using novel data on gender composition of employment across several occupational groups for Chilean manufacturing firms matched with customs data for 1995–2007, a developing country with low gender equality, and utilizing the 1998 Chile–Mexico Free Trade Agreement (FTA) as the quasi-natural shock, we document the first evidence that the share of female white-collar workers increased by 10% for new exporters exporting to Mexico due to the FTA. This happened through a substitution effect from male to female high-skilled workers due to higher use of technology (both domestic and foreign), high-skilled non-production tasks, and reduction in discrimination. We also show that this increase in this share of white-collar female workers is due to a demand- rather than supply-side effect. Overall, we emphasize that trade policy can play an important role in addressing the gender gap in employment.
{"title":"Can trade policy change gender equality? Evidence from Chile","authors":"Utsa Banerjee , Luis Castro Peñarrieta , Pavel Chakraborty","doi":"10.1016/j.jinteco.2025.104143","DOIUrl":"10.1016/j.jinteco.2025.104143","url":null,"abstract":"<div><div>Do firms reorganize gender composition of their employment in response to trade shocks? Using novel data on gender composition of employment across several occupational groups for Chilean manufacturing firms matched with customs data for 1995–2007, a developing country with low gender equality, and utilizing the 1998 Chile–Mexico Free Trade Agreement (FTA) as the quasi-natural shock, we document the first evidence that the share of female white-collar workers increased by 10% for new exporters exporting to Mexico due to the FTA. This happened through a substitution effect from male to female high-skilled workers due to higher use of technology (both domestic and foreign), high-skilled non-production tasks, and reduction in discrimination. We also show that this increase in this share of white-collar female workers is due to a demand- rather than supply-side effect. Overall, we emphasize that trade policy can play an important role in addressing the gender gap in employment.</div></div>","PeriodicalId":16276,"journal":{"name":"Journal of International Economics","volume":"157 ","pages":"Article 104143"},"PeriodicalIF":4.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144895787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01Epub Date: 2025-08-13DOI: 10.1016/j.jinteco.2025.104145
Jeffrey H. Bergstrand , Matthew W. Clance , J.M.C. Santos Silva
Although there is evidence suggesting that the effects of trade liberalizations likely vary across the distribution of trade flows, trade economists have focused almost entirely on conditional mean estimates of their trade elasticities. We propose the novel use of Poisson-based expectile regressions to estimate the heterogeneous effects of trade liberalizations across the entire conditional distribution. Like standard Poisson regression, this method does not need the dependent variable to be logged, accommodates a mass of observations at zero, and is easy to implement, allowing the estimation of gravity equations with the standard three-way fixed effects specification. Using the proposed estimator, we find systematic evidence that trade liberalizations have larger effects at the lower tail of the conditional distribution. We then use the proposed method to investigate the causes of this heterogeneity, and our results suggest that the success of trade liberalizations strongly depends on potential for expansions along the extensive margin.
{"title":"The tails of gravity: Using expectiles to quantify the trade-margins effects of economic integration agreements","authors":"Jeffrey H. Bergstrand , Matthew W. Clance , J.M.C. Santos Silva","doi":"10.1016/j.jinteco.2025.104145","DOIUrl":"10.1016/j.jinteco.2025.104145","url":null,"abstract":"<div><div>Although there is evidence suggesting that the effects of trade liberalizations likely vary across the distribution of trade flows, trade economists have focused almost entirely on <em>conditional mean</em> estimates of their trade elasticities. We propose the novel use of Poisson-based <em>expectile regressions</em> to estimate the heterogeneous effects of trade liberalizations across the entire conditional distribution. Like standard Poisson regression, this method does not need the dependent variable to be logged, accommodates a mass of observations at zero, and is easy to implement, allowing the estimation of gravity equations with the standard three-way fixed effects specification. Using the proposed estimator, we find systematic evidence that trade liberalizations have larger effects at the lower tail of the conditional distribution. We then use the proposed method to investigate the causes of this heterogeneity, and our results suggest that the success of trade liberalizations strongly depends on potential for expansions along the extensive margin.</div></div>","PeriodicalId":16276,"journal":{"name":"Journal of International Economics","volume":"157 ","pages":"Article 104145"},"PeriodicalIF":4.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144865841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01Epub Date: 2025-08-05DOI: 10.1016/j.jinteco.2025.104140
Simon Alder
India and China followed different strategies in the design of their recent highway networks. India first focused on connecting the four largest economic centers of the country, the Golden Quadrilateral, while China had the explicit strategy of connecting intermediate-sized cities. This paper analyzes the aggregate and distributional effects of transport infrastructure in India based on a general equilibrium trade framework. I compare the effect of the Golden Quadrilateral to a counterfactual network that connects India’s intermediate-sized cities. To construct the counterfactual network, I propose a heuristic network design algorithm to maximize aggregate real income net of road construction costs in the general equilibrium model, and I show that the heuristic algorithm provides a good approximation of the optimal network. The results suggest that the actual network led to sizable aggregate gains but unequal effects across regions. The income-maximizing counterfactual network is substantially larger than the actual Indian network, would imply further aggregate gains, and would benefit the lagging regions of India.
{"title":"Chinese roads in India: The effect of transport infrastructure on economic development","authors":"Simon Alder","doi":"10.1016/j.jinteco.2025.104140","DOIUrl":"10.1016/j.jinteco.2025.104140","url":null,"abstract":"<div><div>India and China followed different strategies in the design of their recent highway networks. India first focused on connecting the four largest economic centers of the country, the Golden Quadrilateral, while China had the explicit strategy of connecting intermediate-sized cities. This paper analyzes the aggregate and distributional effects of transport infrastructure in India based on a general equilibrium trade framework. I compare the effect of the Golden Quadrilateral to a counterfactual network that connects India’s intermediate-sized cities. To construct the counterfactual network, I propose a heuristic network design algorithm to maximize aggregate real income net of road construction costs in the general equilibrium model, and I show that the heuristic algorithm provides a good approximation of the optimal network. The results suggest that the actual network led to sizable aggregate gains but unequal effects across regions. The income-maximizing counterfactual network is substantially larger than the actual Indian network, would imply further aggregate gains, and would benefit the lagging regions of India.</div></div>","PeriodicalId":16276,"journal":{"name":"Journal of International Economics","volume":"157 ","pages":"Article 104140"},"PeriodicalIF":4.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144892229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01Epub Date: 2025-08-06DOI: 10.1016/j.jinteco.2025.104129
Hang Do , Kiet Tuan Duong , Luu Duc Toan Huynh , Nam T. Vu
Using the distance to the Irish border of UK firms that have not changed their location since the 2016 Referendum to isolate the effects of Brexit at the firm level, we find that Brexit implementation in 2020 caused exposed firms to cut their workforce by up to 15.7% on average relative to non-exposed firms. These exposed firms are also more likely to have lower growth expectations and more likely to increase their research and development (R&D) expenditure. In addition, having ex-ante trade exposure, either with or outside the EU, can help alleviate such negative effects of Brexit. Such results highlight the role of trade exposure and the expectation channel, and support the hypothesis that firms prioritize innovations in response to Brexit.
{"title":"The Real effects of Brexit on labor demand: Evidence from firm-level data","authors":"Hang Do , Kiet Tuan Duong , Luu Duc Toan Huynh , Nam T. Vu","doi":"10.1016/j.jinteco.2025.104129","DOIUrl":"10.1016/j.jinteco.2025.104129","url":null,"abstract":"<div><div>Using the distance to the Irish border of UK firms that have not changed their location since the 2016 Referendum to isolate the effects of Brexit at the firm level, we find that Brexit implementation in 2020 caused exposed firms to cut their workforce by up to 15.7% on average relative to non-exposed firms. These exposed firms are also more likely to have lower growth expectations and more likely to increase their research and development (R&D) expenditure. In addition, having ex-ante trade exposure, either with or outside the EU, can help alleviate such negative effects of Brexit. Such results highlight the role of trade exposure and the expectation channel, and support the hypothesis that firms prioritize innovations in response to Brexit.</div></div>","PeriodicalId":16276,"journal":{"name":"Journal of International Economics","volume":"157 ","pages":"Article 104129"},"PeriodicalIF":4.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144831571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01Epub Date: 2025-06-04DOI: 10.1016/j.jinteco.2025.104119
Björn Imbierowicz , Arne Nagengast , Esteban Prieto , Ursula Vogel
We examine the effects of a deglobalization shock on bank lending, firm internal capital markets, and the real economy. Leveraging a unique dataset, we are able to observe both domestic and cross-border credit exposures of German banks as well as internal capital market dynamics within multinational corporations (MNCs). We analyze the response to the Brexit referendum shock. On average, banks reduced lending to United Kingdom (UK) firms following the shock due to increased uncertainty about future losses. More prudent banks reduced their credit more extensively, and less profitable subsidiaries experienced greater reductions. However, UK subsidiaries of large MNCs, with access to internal capital markets, offset this credit supply shock through internal funding, shielding them from negative real effects. Our findings underscore that while international financial frictions following deglobalization shocks can imply negative real effects, firms integrated into global networks mitigate these impacts through internal capital markets.
{"title":"Bank lending and firm internal capital markets following a deglobalization shock","authors":"Björn Imbierowicz , Arne Nagengast , Esteban Prieto , Ursula Vogel","doi":"10.1016/j.jinteco.2025.104119","DOIUrl":"10.1016/j.jinteco.2025.104119","url":null,"abstract":"<div><div>We examine the effects of a deglobalization shock on bank lending, firm internal capital markets, and the real economy. Leveraging a unique dataset, we are able to observe both domestic and cross-border credit exposures of German banks as well as internal capital market dynamics within multinational corporations (MNCs). We analyze the response to the Brexit referendum shock. On average, banks reduced lending to United Kingdom (UK) firms following the shock due to increased uncertainty about future losses. More prudent banks reduced their credit more extensively, and less profitable subsidiaries experienced greater reductions. However, UK subsidiaries of large MNCs, with access to internal capital markets, offset this credit supply shock through internal funding, shielding them from negative real effects. Our findings underscore that while international financial frictions following deglobalization shocks can imply negative real effects, firms integrated into global networks mitigate these impacts through internal capital markets.</div></div>","PeriodicalId":16276,"journal":{"name":"Journal of International Economics","volume":"157 ","pages":"Article 104119"},"PeriodicalIF":3.8,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144240636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01Epub Date: 2025-08-20DOI: 10.1016/j.jinteco.2025.104155
Jonathan Eaton , Marcela Eslava , David Jinkins , C.J. Krizan , James Tybout
Exporting is harder than selling at home, and overcoming barriers takes time. We identify key obstacles to exporting and measure their importance by developing a model of firm-level export dynamics with costly customer search, visibility effects, and learning about product appeal. Fitting the model to U.S. import data on Colombian manufactures, we replicate patterns of exporter maturation. A firm’s customer base and market knowledge are valuable intangible assets: losing both through “market amnesia” would cost Colombian exporters US$14.2 billion, over twice annual exports to the U.S. About a quarter of this reflects lost future sales to current customers; the rest stems from the cost of relearning product appeal and regaining visibility. The frictions we estimate slow trade’s response to shocks: the 10-year export sales response to an exchange rate shock is 48 percent larger than the 1-year response.
{"title":"A search and learning model of export dynamics","authors":"Jonathan Eaton , Marcela Eslava , David Jinkins , C.J. Krizan , James Tybout","doi":"10.1016/j.jinteco.2025.104155","DOIUrl":"10.1016/j.jinteco.2025.104155","url":null,"abstract":"<div><div>Exporting is harder than selling at home, and overcoming barriers takes time. We identify key obstacles to exporting and measure their importance by developing a model of firm-level export dynamics with costly customer search, visibility effects, and learning about product appeal. Fitting the model to U.S. import data on Colombian manufactures, we replicate patterns of exporter maturation. A firm’s customer base and market knowledge are valuable intangible assets: losing both through “market amnesia” would cost Colombian exporters US$14.2 billion, over twice annual exports to the U.S. About a quarter of this reflects lost future sales to current customers; the rest stems from the cost of relearning product appeal and regaining visibility. The frictions we estimate slow trade’s response to shocks: the 10-year export sales response to an exchange rate shock is 48 percent larger than the 1-year response.</div></div>","PeriodicalId":16276,"journal":{"name":"Journal of International Economics","volume":"157 ","pages":"Article 104155"},"PeriodicalIF":4.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01Epub Date: 2025-08-09DOI: 10.1016/j.jinteco.2025.104146
Jens H.E. Christensen , Nikola N. Mirkov , Xin Zhang
Through large-scale asset purchases, widely known as quantitative easing (QE), central banks around the world have affected the supply of safe assets by buying quasi-safe bonds in exchange for truly safe reserves. We examine the pricing effects of the European Central Bank’s bond purchases in the 2015–2021 period on an international panel of bond safety premia from four highly rated countries: Denmark, Germany, Sweden, and Switzerland. We find statistically significant negative effects for all four countries, highlighting an international spillover channel through which QE programs reduce bond safety premia by expanding the supply of truly safe assets.
{"title":"Quantitative easing and the supply of safe assets: Evidence from international bond safety premia","authors":"Jens H.E. Christensen , Nikola N. Mirkov , Xin Zhang","doi":"10.1016/j.jinteco.2025.104146","DOIUrl":"10.1016/j.jinteco.2025.104146","url":null,"abstract":"<div><div>Through large-scale asset purchases, widely known as quantitative easing (QE), central banks around the world have affected the supply of safe assets by buying quasi-safe bonds in exchange for truly safe reserves. We examine the pricing effects of the European Central Bank’s bond purchases in the 2015–2021 period on an international panel of bond safety premia from four highly rated countries: Denmark, Germany, Sweden, and Switzerland. We find statistically significant negative effects for all four countries, highlighting an international spillover channel through which QE programs reduce bond safety premia by expanding the supply of truly safe assets.</div></div>","PeriodicalId":16276,"journal":{"name":"Journal of International Economics","volume":"157 ","pages":"Article 104146"},"PeriodicalIF":4.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144865842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01Epub Date: 2025-06-12DOI: 10.1016/j.jinteco.2025.104101
Martin Baumgärtner , Johannes Zahner
Dictionary-based methods represent the most commonly used approach for quantifying the qualitative information from (central bank) communication. In this paper, we propose machine learning models that generates embeddings from words and documents. Embeddings are multidimensional numerical text representations that capture the underlying semantic relationships within text. Using a novel corpus of 22,000 documents from 128 central banks, we generate the first domain-specific embeddings for central bank communication that outperform dictionaries and existing embeddings on tasks such as predicting monetary policy shocks. We further demonstrate the efficacy of our embeddings by constructing an index that tracks the extent to which Federal Reserve communications align with an inflation-targeting stance. Our empirical results indicate that deviations from inflation-targeting language substantially affect market-based expectations and influence monetary policy decisions, significantly reducing the inflation response parameter in an estimated Taylor rule.
{"title":"Whatever it takes to understand a central banker — Embedding their words using neural networks","authors":"Martin Baumgärtner , Johannes Zahner","doi":"10.1016/j.jinteco.2025.104101","DOIUrl":"10.1016/j.jinteco.2025.104101","url":null,"abstract":"<div><div>Dictionary-based methods represent the most commonly used approach for quantifying the qualitative information from (central bank) communication. In this paper, we propose machine learning models that generates embeddings from words and documents. Embeddings are multidimensional numerical text representations that capture the underlying semantic relationships within text. Using a novel corpus of 22,000 documents from 128 central banks, we generate the first domain-specific embeddings for central bank communication that outperform dictionaries and existing embeddings on tasks such as predicting monetary policy shocks. We further demonstrate the efficacy of our embeddings by constructing an index that tracks the extent to which Federal Reserve communications align with an inflation-targeting stance. Our empirical results indicate that deviations from inflation-targeting language substantially affect market-based expectations and influence monetary policy decisions, significantly reducing the inflation response parameter in an estimated Taylor rule.</div></div>","PeriodicalId":16276,"journal":{"name":"Journal of International Economics","volume":"157 ","pages":"Article 104101"},"PeriodicalIF":4.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145010045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01Epub Date: 2025-06-04DOI: 10.1016/j.jinteco.2025.104106
Weidi Yuan , Difei Ouyang
This paper studies how the elimination of trade policy uncertainty around WTO accession affects China’s manufacturing sector. We find a strong cross-sectional relationship between reduced uncertainty and input and output expansion by industry. The growth effect is particularly pronounced in the most labor-intensive industries in line with China’s comparative advantage, and more so in regions with lower shipping costs and a large manufacturing base. A decomposition reveals that the industry expansion can be traced to the extensive margin of new firm entry—consistent with firm-level evidence showing only a modest response among incumbent firms.
{"title":"Industrial development and trade policy uncertainty: Evidence from China’s WTO accession","authors":"Weidi Yuan , Difei Ouyang","doi":"10.1016/j.jinteco.2025.104106","DOIUrl":"10.1016/j.jinteco.2025.104106","url":null,"abstract":"<div><div>This paper studies how the elimination of trade policy uncertainty around WTO accession affects China’s manufacturing sector. We find a strong cross-sectional relationship between reduced uncertainty and input and output expansion by industry. The growth effect is particularly pronounced in the most labor-intensive industries in line with China’s comparative advantage, and more so in regions with lower shipping costs and a large manufacturing base. A decomposition reveals that the industry expansion can be traced to the extensive margin of new firm entry—consistent with firm-level evidence showing only a modest response among incumbent firms.</div></div>","PeriodicalId":16276,"journal":{"name":"Journal of International Economics","volume":"157 ","pages":"Article 104106"},"PeriodicalIF":3.8,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144240129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01Epub Date: 2025-05-21DOI: 10.1016/j.jinteco.2025.104096
Anastasios Dosis
This paper studies how the real interest rate affects the (mis)allocation of capital in a small open economy characterized by asymmetric information in the financial market. Low interest rates allow low-productivity firms to enter the pool of borrowers, imposing an information externality that negatively impacts highly productive firms and forces them to reduce their investments. This suggests that, in some cases, although lowering the interest rate can increase total investment and output, it does not necessarily improve welfare. The results align with recent empirical evidence highlighting the adverse effects of low interest rates in southern European countries.
{"title":"Low interest rates, capital misallocation and welfare","authors":"Anastasios Dosis","doi":"10.1016/j.jinteco.2025.104096","DOIUrl":"10.1016/j.jinteco.2025.104096","url":null,"abstract":"<div><div>This paper studies how the real interest rate affects the (mis)allocation of capital in a small open economy characterized by asymmetric information in the financial market. Low interest rates allow low-productivity firms to enter the pool of borrowers, imposing an information externality that negatively impacts highly productive firms and forces them to reduce their investments. This suggests that, in some cases, although lowering the interest rate can increase total investment and output, it does not necessarily improve welfare. The results align with recent empirical evidence highlighting the adverse effects of low interest rates in southern European countries.</div></div>","PeriodicalId":16276,"journal":{"name":"Journal of International Economics","volume":"157 ","pages":"Article 104096"},"PeriodicalIF":3.8,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144108028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}