Pub Date : 2024-08-28DOI: 10.1353/eca.2023.a935431
Benjamin Moll, Moritz Schularick, Georg Zachmann
The Russian attack on Ukraine in February 2022 laid bare Germany's dependence on Russian energy imports and ignited a heated debate on the costs of a cutoff from Russian gas. While one side predicted economic collapse, the other side (ours) predicted "substantial but manageable" economic costs due to households and firms adapting to the shock. Using the empirical evidence now at hand, this paper studies the adjustment of the German economy after Russia weaponized gas exports by cutting Germany off from gas supplies in the summer of 2022. We document two key margins of adjustment. First, Germany was able to replace substantial amounts of Russian gas with imports from third countries, underscoring the insurance provided by openness to international trade. Second, the German economy reduced gas consumption by about 20 percent, driven mostly by industry (26 percent) and households (17 percent). The economic costs of demand reduction were manageable with the economy as a whole only experiencing a mild one-quarter contraction in the winter of 2022–2023 and then stagnating. Overall industrial production decoupled from production in energy-intensive sectors (which did see large drops) and declined only slightly. We draw a number of key lessons from this important case study about the insurance offered by access to global markets and the power of substitution, specifically that supply shocks have dramatically smaller costs when elasticities of substitution are very low (but nonzero) compared to a truly zero elasticity.
{"title":"The Power of Substitution: The Great German Gas Debate in Retrospect","authors":"Benjamin Moll, Moritz Schularick, Georg Zachmann","doi":"10.1353/eca.2023.a935431","DOIUrl":"https://doi.org/10.1353/eca.2023.a935431","url":null,"abstract":"<p><p>The Russian attack on Ukraine in February 2022 laid bare Germany's dependence on Russian energy imports and ignited a heated debate on the costs of a cutoff from Russian gas. While one side predicted economic collapse, the other side (ours) predicted \"substantial but manageable\" economic costs due to households and firms adapting to the shock. Using the empirical evidence now at hand, this paper studies the adjustment of the German economy after Russia weaponized gas exports by cutting Germany off from gas supplies in the summer of 2022. We document two key margins of adjustment. First, Germany was able to replace substantial amounts of Russian gas with imports from third countries, underscoring the insurance provided by openness to international trade. Second, the German economy reduced gas consumption by about 20 percent, driven mostly by industry (26 percent) and households (17 percent). The economic costs of demand reduction were manageable with the economy as a whole only experiencing a mild one-quarter contraction in the winter of 2022–2023 and then stagnating. Overall industrial production decoupled from production in energy-intensive sectors (which did see large drops) and declined only slightly. We draw a number of key lessons from this important case study about the insurance offered by access to global markets and the power of substitution, specifically that supply shocks have dramatically smaller costs when elasticities of substitution are very low (but nonzero) compared to a truly zero elasticity.</p></p>","PeriodicalId":51405,"journal":{"name":"Brookings Papers on Economic Activity","volume":"10 1","pages":""},"PeriodicalIF":5.9,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142084700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-15DOI: 10.1353/eca.2023.a919363
Amy Finkelstein, Casey McQuillan, Owen Zidar, Eric Zwick
Over half of the US population receives health insurance through an employer with premium contributions creating a flat "head tax" per worker, independent of their earnings. This paper develops and calibrates a stylized model of the labor market to explore how this uniquely American approach to financing health insurance contributes to labor market inequality. We consider a partial-equilibrium counterfactual in which employer-provided health insurance is instead financed by a statutory payroll tax on firms. We find that, under this counterfactual financing, in 2019 the college wage premium would have been 11 percent lower, noncollege annual earnings would have been $1,700 (3 percent) higher, and noncollege employment would have been nearly 500,000 higher. These calibrated labor market effects of switching from head tax to payroll tax financing are in the same ballpark as estimates of the impact of other leading drivers of labor market inequality, including changes in outsourcing, robot adoption, rising trade, unionization, and the real minimum wage. We also consider a separate partial-equilibrium counterfactual in which the current head tax financing is maintained, but 2019 US health care spending as a share of GDP is reduced to the Canadian share; here, we estimate that the 2019 college wage premium would have been 5 percent lower and noncollege annual earnings would have been 5 percent higher. These findings suggest that health care costs and the financing of health insurance warrant greater attention in both public policy and research on US labor market inequality.
{"title":"The Health Wedge and Labor Market Inequality","authors":"Amy Finkelstein, Casey McQuillan, Owen Zidar, Eric Zwick","doi":"10.1353/eca.2023.a919363","DOIUrl":"https://doi.org/10.1353/eca.2023.a919363","url":null,"abstract":"<p><p>Over half of the US population receives health insurance through an employer with premium contributions creating a flat \"head tax\" per worker, independent of their earnings. This paper develops and calibrates a stylized model of the labor market to explore how this uniquely American approach to financing health insurance contributes to labor market inequality. We consider a partial-equilibrium counterfactual in which employer-provided health insurance is instead financed by a statutory payroll tax on firms. We find that, under this counterfactual financing, in 2019 the college wage premium would have been 11 percent lower, noncollege annual earnings would have been $1,700 (3 percent) higher, and noncollege employment would have been nearly 500,000 higher. These calibrated labor market effects of switching from head tax to payroll tax financing are in the same ballpark as estimates of the impact of other leading drivers of labor market inequality, including changes in outsourcing, robot adoption, rising trade, unionization, and the real minimum wage. We also consider a separate partial-equilibrium counterfactual in which the current head tax financing is maintained, but 2019 US health care spending as a share of GDP is reduced to the Canadian share; here, we estimate that the 2019 college wage premium would have been 5 percent lower and noncollege annual earnings would have been 5 percent higher. These findings suggest that health care costs and the financing of health insurance warrant greater attention in both public policy and research on US labor market inequality.</p></p>","PeriodicalId":51405,"journal":{"name":"Brookings Papers on Economic Activity","volume":"224 1","pages":""},"PeriodicalIF":5.9,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139739639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-15DOI: 10.1353/eca.2023.a919361
Gee Hee Hong, Deborah Lucas
Governments deployed credit policies on a historically unprecedented scale in response to the COVID-19 pandemic. We estimate the effective size of credit policies for seven large advanced economies in terms of the incremental resources provided to firms and households—a measure that allows aggregation across credit support, forbearance, and traditional fiscal policies but that does not appear in traditional government statistics. These estimates are used to reassess the absolute and relative size of different governments' policy interventions and to evaluate whether taking credit policies into account can help explain the cross section of macroeconomic outcomes. Incremental resources increase from an average 14.5 percent of 2020 GDP when only fiscal policies are considered to 22 percent of 2020 GDP when credit policies are also taken into account. Incorporating credit policies also reduces the cross-country variation in the total size of policy interventions. With regard to fiscal cost, fair value estimates for these credit support programs average 37 percent of principal, with wide variation depending on program features. We also discuss several related measurement issues, the financial regulatory changes that accommodated these programs, the pros and cons of the different types of credit policies, and how in principle budgetary costs should be calculated versus how governments account for credit policies in practice.
为应对 COVID-19 大流行,各国政府部署了规模空前的信贷政策。我们根据向企业和家庭提供的增量资源估算了七个大型发达经济体信贷政策的有效规模--这种方法可以将信贷支持、宽限和传统财政政策汇总在一起,但在传统的政府统计数据中并不存在。这些估算值用于重新评估不同政府政策干预的绝对规模和相对规模,并评估将信贷政策考虑在内是否有助于解释宏观经济的横截面结果。只考虑财政政策时,增量资源平均占 2020 年 GDP 的 14.5%,考虑信贷政策时,增量资源占 2020 年 GDP 的 22%。纳入信贷政策还减少了政策干预总规模的跨国差异。关于财政成本,这些信贷支持项目的公允价值估计平均为本金的 37%,但因项目特点不同而存在较大差异。我们还讨论了几个相关的衡量问题、适应这些项目的金融监管变化、不同类型信贷政策的利弊,以及原则上应如何计算预算成本与政府在实践中如何核算信贷政策。
{"title":"COVID-19 Credit Policies around the World: Size, Scope, Costs, and Consequences","authors":"Gee Hee Hong, Deborah Lucas","doi":"10.1353/eca.2023.a919361","DOIUrl":"https://doi.org/10.1353/eca.2023.a919361","url":null,"abstract":"<p><p>Governments deployed credit policies on a historically unprecedented scale in response to the COVID-19 pandemic. We estimate the effective size of credit policies for seven large advanced economies in terms of the incremental resources provided to firms and households—a measure that allows aggregation across credit support, forbearance, and traditional fiscal policies but that does not appear in traditional government statistics. These estimates are used to reassess the absolute and relative size of different governments' policy interventions and to evaluate whether taking credit policies into account can help explain the cross section of macroeconomic outcomes. Incremental resources increase from an average 14.5 percent of 2020 GDP when only fiscal policies are considered to 22 percent of 2020 GDP when credit policies are also taken into account. Incorporating credit policies also reduces the cross-country variation in the total size of policy interventions. With regard to fiscal cost, fair value estimates for these credit support programs average 37 percent of principal, with wide variation depending on program features. We also discuss several related measurement issues, the financial regulatory changes that accommodated these programs, the pros and cons of the different types of credit policies, and how in principle budgetary costs should be calculated versus how governments account for credit policies in practice.</p></p>","PeriodicalId":51405,"journal":{"name":"Brookings Papers on Economic Activity","volume":"296 1","pages":""},"PeriodicalIF":5.9,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139739643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-15DOI: 10.1353/eca.2023.a919358
Katharine G. Abraham, Lea E. Rendell
Labor force participation and average hours of work both fell sharply at the beginning of the COVID-19 pandemic. Neither had fully recovered by the end of 2022. The drop in participation between December 2019 and December 2022 implies a loss of 3 million people from the labor force; the decline in average hours over the same period translates to the equivalent of 2.6 million fewer workers. Demographic and other trend factors that predated the pandemic explain most of the participation shortfall. Taken together, COVID-19-related health effects and the persistent (though shrinking) effects of the fear of contracting COVID-19 more than explain the rest. In contrast, pre-pandemic factors account for little of the shortfall in hours. COVID-19-related health effects account for perhaps 40 percent of that decline, but we are unable to explain the majority of the hours shortfall. We speculate that the lower level of hours in the post-pandemic period may reflect a shift in the desired balance between work and other aspects of workers' lives.
{"title":"Where Are the Missing Workers? Anticipated and Unanticipated Labor Supply Changes in the Pandemic's Aftermath","authors":"Katharine G. Abraham, Lea E. Rendell","doi":"10.1353/eca.2023.a919358","DOIUrl":"https://doi.org/10.1353/eca.2023.a919358","url":null,"abstract":"<p><p>Labor force participation and average hours of work both fell sharply at the beginning of the COVID-19 pandemic. Neither had fully recovered by the end of 2022. The drop in participation between December 2019 and December 2022 implies a loss of 3 million people from the labor force; the decline in average hours over the same period translates to the equivalent of 2.6 million fewer workers. Demographic and other trend factors that predated the pandemic explain most of the participation shortfall. Taken together, COVID-19-related health effects and the persistent (though shrinking) effects of the fear of contracting COVID-19 more than explain the rest. In contrast, pre-pandemic factors account for little of the shortfall in hours. COVID-19-related health effects account for perhaps 40 percent of that decline, but we are unable to explain the majority of the hours shortfall. We speculate that the lower level of hours in the post-pandemic period may reflect a shift in the desired balance between work and other aspects of workers' lives.</p></p>","PeriodicalId":51405,"journal":{"name":"Brookings Papers on Economic Activity","volume":"111 1","pages":""},"PeriodicalIF":5.9,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139739656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-15DOI: 10.1353/eca.2023.a919359
John E. T. Bistline, Neil R. Mehrotra, Catherine Wolfram
The Inflation Reduction Act (IRA) represents the largest US federal response to climate change to date. We highlight the key climate provisions and assess the act's potential economic impacts. Substantially higher investments in clean energy and electric vehicles imply that fiscal costs may be larger than projected. However, even at the high end, IRA provisions remain cost-effective. The IRA has large impacts on power sector investments and electricity prices, lowering retail electricity rates and resulting in negative prices in some wholesale markets. We find small quantitative macroeconomic effects, including a small decline in headline inflation, but macroeconomic conditions—particularly higher interest rates and materials costs—may have substantial negative effects on clean energy investment. We show that the subsidy approach in the IRA has expansionary supply-side effects relative to a carbon tax but, in a representative-agent dynamic model, is preferable to a carbon tax only in the presence of a strong learning-by-doing externality. We also discuss the economics of the industrial policy aspects of the act as well as the distributional impacts and the possible incidence of the different tax credits in the IRA.
{"title":"Economic Implications of the Climate Provisions of the Inflation Reduction Act","authors":"John E. T. Bistline, Neil R. Mehrotra, Catherine Wolfram","doi":"10.1353/eca.2023.a919359","DOIUrl":"https://doi.org/10.1353/eca.2023.a919359","url":null,"abstract":"<p><p>The Inflation Reduction Act (IRA) represents the largest US federal response to climate change to date. We highlight the key climate provisions and assess the act's potential economic impacts. Substantially higher investments in clean energy and electric vehicles imply that fiscal costs may be larger than projected. However, even at the high end, IRA provisions remain cost-effective. The IRA has large impacts on power sector investments and electricity prices, lowering retail electricity rates and resulting in negative prices in some wholesale markets. We find small quantitative macroeconomic effects, including a small decline in headline inflation, but macroeconomic conditions—particularly higher interest rates and materials costs—may have substantial negative effects on clean energy investment. We show that the subsidy approach in the IRA has expansionary supply-side effects relative to a carbon tax but, in a representative-agent dynamic model, is preferable to a carbon tax only in the presence of a strong learning-by-doing externality. We also discuss the economics of the industrial policy aspects of the act as well as the distributional impacts and the possible incidence of the different tax credits in the IRA.</p></p>","PeriodicalId":51405,"journal":{"name":"Brookings Papers on Economic Activity","volume":"98 1","pages":""},"PeriodicalIF":5.9,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139739645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-15DOI: 10.1353/eca.2023.a919360
Viral V. Acharya
I present a perspective on where the Indian economy stands right now. I acknowledge the contradictions that have arisen given the divergent growth path of urban, formal or (stock-market) listed India relative to rural, informal or unlisted India. I also focus on the country's immense opportunities in expanding the digital footprint of finance to last-mile borrowers. I present novel facts on the rising industrial concentration, drawing out its historical evolution, the channels that have caused it to rise recently, and its implications for product price markups and inflation. I recommend that to restore industrial balance, India increase overall competition by reducing import tariffs and reduce the pricing power of its largest conglomerates. I also propose that to restore macroeconomic balance, India reduce fiscal deficit and public sector borrowing requirements as well as rein in inflation, address gaps in skills and education, and restore female labor force participation.
{"title":"India at 75: Replete with Contradictions, Brimming with Opportunities, Saddled with Challenges","authors":"Viral V. Acharya","doi":"10.1353/eca.2023.a919360","DOIUrl":"https://doi.org/10.1353/eca.2023.a919360","url":null,"abstract":"<p><p>I present a perspective on where the Indian economy stands right now. I acknowledge the contradictions that have arisen given the divergent growth path of urban, formal or (stock-market) listed India relative to rural, informal or unlisted India. I also focus on the country's immense opportunities in expanding the digital footprint of finance to last-mile borrowers. I present novel facts on the rising industrial concentration, drawing out its historical evolution, the channels that have caused it to rise recently, and its implications for product price markups and inflation. I recommend that to restore industrial balance, India increase overall competition by reducing import tariffs and reduce the pricing power of its largest conglomerates. I also propose that to restore macroeconomic balance, India reduce fiscal deficit and public sector borrowing requirements as well as rein in inflation, address gaps in skills and education, and restore female labor force participation.</p></p>","PeriodicalId":51405,"journal":{"name":"Brookings Papers on Economic Activity","volume":"4 1","pages":""},"PeriodicalIF":5.9,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139739669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-07DOI: 10.1353/eca.2022.a901275
Maurice Obstfeld, Haonan Zhou
The US dollar's nominal effective exchange rate closely tracks global financial conditions, which themselves show a cyclical pattern. Over that cycle, world asset prices, leverage, and capital flows move in concert with global growth, especially influencing the fortunes of emerging markets and developing economies (EMDEs). This paper documents that dollar appreciation shocks predict economic downturns in EMDEs and highlights policies countries could implement to dampen the effects of dollar fluctuations. Dollar appreciation shocks themselves are highly correlated not just with tighter US monetary policies but also with measures of US domestic and international dollar funding stress that themselves reflect global investors' risk appetite. After the initial market panic and upward dollar spike at the start of the COVID-19 pandemic, the dollar fell as global financial conditions eased; but the higher inflation that followed has induced central banks everywhere to tighten monetary policies more recently. The dollar has strengthened considerably since mid-2021 and a contractionary phase of the global financial cycle is now underway. Owing to increases in public- and business-sector debts during the pandemic, a strong dollar, higher interest rates, and slower economic growth will be challenging for EMDEs.
{"title":"The Global Dollar Cycle","authors":"Maurice Obstfeld, Haonan Zhou","doi":"10.1353/eca.2022.a901275","DOIUrl":"https://doi.org/10.1353/eca.2022.a901275","url":null,"abstract":"<p><p>The US dollar's nominal effective exchange rate closely tracks global financial conditions, which themselves show a cyclical pattern. Over that cycle, world asset prices, leverage, and capital flows move in concert with global growth, especially influencing the fortunes of emerging markets and developing economies (EMDEs). This paper documents that dollar appreciation shocks predict economic downturns in EMDEs and highlights policies countries could implement to dampen the effects of dollar fluctuations. Dollar appreciation shocks themselves are highly correlated not just with tighter US monetary policies but also with measures of US domestic and international dollar funding stress that themselves reflect global investors' risk appetite. After the initial market panic and upward dollar spike at the start of the COVID-19 pandemic, the dollar fell as global financial conditions eased; but the higher inflation that followed has induced central banks everywhere to tighten monetary policies more recently. The dollar has strengthened considerably since mid-2021 and a contractionary phase of the global financial cycle is now underway. Owing to increases in public- and business-sector debts during the pandemic, a strong dollar, higher interest rates, and slower economic growth will be challenging for EMDEs.</p></p>","PeriodicalId":51405,"journal":{"name":"Brookings Papers on Economic Activity","volume":"33 11","pages":""},"PeriodicalIF":5.9,"publicationDate":"2023-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50167665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-07DOI: 10.1353/eca.2022.a901276
Laurence Ball, Daniel Leigh, Prachi Mishra
This paper analyzes the dramatic rise in US inflation since 2020, which we decompose into a rise in core inflation as measured by the weighted median inflation rate and deviations of headline inflation from core. We explain the rise in core inflation with two factors: the tightening of the labor market as captured by the ratio of job vacancies to unemployment, and the pass-through into core inflation from past shocks to headline inflation. The headline shocks themselves are explained largely by increases in energy prices and by supply chain problems as captured by backlogs of orders for goods and services. Looking forward, we simulate the future path of inflation for alternative paths of the unemployment rate, focusing on the projections of Federal Reserve policymakers in which unemployment rises only modestly to 4.4 percent. We find that this unemployment path returns inflation to near the Federal Reserve's target only under optimistic assumptions about both inflation expectations and the Beveridge curve relating the unemployment and vacancy rates. Under less benign assumptions about these factors, the inflation rate remains well above target unless unemployment rises by more than the Federal Reserve projects.
{"title":"Understanding US Inflation during the COVID-19 Era","authors":"Laurence Ball, Daniel Leigh, Prachi Mishra","doi":"10.1353/eca.2022.a901276","DOIUrl":"https://doi.org/10.1353/eca.2022.a901276","url":null,"abstract":"<p><p>This paper analyzes the dramatic rise in US inflation since 2020, which we decompose into a rise in core inflation as measured by the weighted median inflation rate and deviations of headline inflation from core. We explain the rise in core inflation with two factors: the tightening of the labor market as captured by the ratio of job vacancies to unemployment, and the pass-through into core inflation from past shocks to headline inflation. The headline shocks themselves are explained largely by increases in energy prices and by supply chain problems as captured by backlogs of orders for goods and services. Looking forward, we simulate the future path of inflation for alternative paths of the unemployment rate, focusing on the projections of Federal Reserve policymakers in which unemployment rises only modestly to 4.4 percent. We find that this unemployment path returns inflation to near the Federal Reserve's target only under optimistic assumptions about both inflation expectations and the Beveridge curve relating the unemployment and vacancy rates. Under less benign assumptions about these factors, the inflation rate remains well above target unless unemployment rises by more than the Federal Reserve projects.</p></p>","PeriodicalId":51405,"journal":{"name":"Brookings Papers on Economic Activity","volume":"34 2","pages":""},"PeriodicalIF":5.9,"publicationDate":"2023-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50167662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}