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Environmental policy uncertainty and green innovation: A TVP-VAR-SV model approach 环境政策不确定性与绿色创新:一个TVP-VAR-SV模型方法
IF 5.3 Pub Date : 2022-01-01 DOI: 10.3934/qfe.2022026
Xi-te Yang, Jidi Cao, Zihan Liu, Yongzeng Lai
This paper aims to measure the impacts of environmental policy uncertainty on green innovation and explore the transmission channel that is less understood in past scientific works. In this paper, we use a newspaper-based sentiment mining approach to establish an index of environmental policy uncertainty in China and implement web crawlers and text analysis techniques to construct a network public opinion index of the Chinese financial market. Then, we explore the relationships between environmental policy uncertainty, network public opinion, and green innovation through the time-varying parameter structural vector autoregressive with stochastic volatility (TVP-VAR-SV) model. The transmission channels of environmental policy uncertainty to green innovation are depicted by selecting different timing of policy release. Our empirical study results show that the fluctuations of environmental policy uncertainty, network public opinion, and green innovation have time-varying characteristics. Furthermore, the findings reveal interactions among the three variables: 1) The environmental policy uncertainty can influence green innovation through network public opinion. 2) The environmental policy uncertainty has both inhibited and promoted effects on network public opinion and green innovation. 3) There are differences in the direction and the degree of impulse responses among the above three variables in the context of uncertainty shocks. Besides, managerial relevance and policy implications are also provided for decision-makers facing sustainable development challenges.
本文旨在衡量环境政策不确定性对绿色创新的影响,探索过去科学工作中鲜为人知的传导渠道。本文采用基于报纸的情感挖掘方法建立了中国环境政策不确定性指数,并采用网络爬虫和文本分析技术构建了中国金融市场的网络民意指数。在此基础上,通过随机波动的时变参数结构向量自回归模型(TVP-VAR-SV)探讨了环境政策不确定性、网络民意与绿色创新之间的关系。通过选择不同的政策释放时机,描述了环境政策不确定性对绿色创新的传导渠道。实证研究结果表明,环境政策不确定性、网络民意和绿色创新的波动具有时变特征。结果表明:1)环境政策不确定性通过网络舆论影响绿色创新;(2)环境政策不确定性对网络舆论和绿色创新既有抑制作用,也有促进作用。3)在不确定性冲击背景下,上述三个变量的冲击响应方向和程度存在差异。此外,还为面临可持续发展挑战的决策者提供了管理相关性和政策含义。
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引用次数: 6
Capital flows in integrated capital markets: MILA case 综合资本市场中的资本流动:MILA案例
IF 5.3 Pub Date : 2022-01-01 DOI: 10.3934/qfe.2022027
Juan David Vega Baquero, Miguel Santolino
The FeldsteinHorioka1980 study on investment flows through the correlation of domestic saving and investment concluded that liberalization of capital markets does not necessarily lead to a movement of capital looking for a better allocation of resources, as classical theory would suggest. Ever since, literature has been prolific regarding this "puzzle", with arguments for and against this conclusion. This paper aims to analyze the issue from a different perspective. In recent years, the stock markets of Chile, Colombia, Mexico and Peru joined the Latin American Integrated Market through an agreement that allows investors in any of the participating markets to invest in the others as if they were investing locally. Compositional methods are used to assess the hypothesis of a potential flow of capital between markets generated by the creation of the joint market. First, cross-sectional methods for compositional data were used to test the hypothesis. As a result, it was not possible to find a change in the composition of the investment in the four markets produced by the creation of the joint market. Secondly, vector autoregressive models were estimated and tested for structural breaks in the parameters. However, these models were not found to be informative. In conclusion, it was not possible to reject the Felstein-Horioka hypothesis, supporting the idea that liberalization is not enough to generate capital flows between markets.
FeldsteinHorioka1980通过国内储蓄和投资的相关性对投资流动进行的研究得出结论,资本市场的自由化并不一定会像经典理论所暗示的那样,导致资本寻找更好的资源配置的运动。从那以后,关于这个“谜题”的文学作品层出不穷,有支持也有反对这个结论的争论。本文旨在从不同的角度来分析这一问题。近年来,智利、哥伦比亚、墨西哥和秘鲁的股票市场通过一项协议加入了拉丁美洲综合市场,该协议允许任何参与市场的投资者投资于其他市场,就像他们在当地投资一样。组合方法用于评估由联合市场的创建所产生的市场之间潜在资本流动的假设。首先,使用成分数据的横截面方法来检验假设。因此,不可能发现由于建立联合市场而产生的对四个市场的投资构成有什么变化。其次,对参数中结构断裂的向量自回归模型进行估计和检验。然而,这些模型并不能提供信息。总之,不可能拒绝费尔斯坦-堀冈假说,该假说支持自由化不足以产生市场间资本流动的观点。
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引用次数: 1
Measuring China's urban digital finance 衡量中国城市数字金融
IF 5.3 Pub Date : 2022-01-01 DOI: 10.3934/qfe.2022017
Gaoke Liao, Zhenghui Li, Mengxin Wang, Khaldoon Albitar
With the full integration of digital information technology and financial services, digital finance has developed rapidly. As there are significant differences in the development level of FinTech and traditional financial sectors in different cities, it is important to evaluate the development level of urban digital finance. This study aimed to compile an index of urban digital finance to present an accurate and in-depth depiction of how urban digital finance has developed in China. Our sample covers 278 cities in China, over the period 2010–2020. This paper firstly constructs the urban digital financial index system from the three dimensions of digital financial services, digital financial technology, and digital financial operating environment, and then adopts a combination of subjective and objective methods to measure the urban digital financial index. This paper study revealed that China's urban digital finance has been on an upward trend from 2010 to 2020, and the digital finance operating environment is an important driving force for the growth of the urban digital finance index. The convergence of China's urban digital finance is decreasing, indicating that the gap in digital financial development between cities is increasing. Urban digital finance has positive spatial agglomeration, but this spatial agglomeration is decreasing.
随着数字信息技术与金融服务的充分融合,数字金融得到了迅速发展。由于不同城市金融科技与传统金融行业的发展水平存在显著差异,因此评估城市数字金融的发展水平具有重要意义。本研究旨在编制城市数字金融指数,以准确、深入地描述中国城市数字金融的发展情况。我们的样本涵盖了2010年至2020年期间中国278个城市。本文首先从数字金融服务、数字金融技术、数字金融运营环境三个维度构建城市数字金融指标体系,然后采用主客观相结合的方法对城市数字金融指标进行测度。本文研究发现,2010 - 2020年中国城市数字金融呈上升趋势,数字金融运营环境是城市数字金融指数增长的重要驱动力。中国城市数字金融的趋同程度在下降,表明城市间数字金融发展的差距在加大。城市数字金融存在正的空间集聚,但空间集聚呈递减趋势。
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引用次数: 9
The impact of pension fund assets on economic growth in countries, emerging countries, and developed countries 养老基金资产对国家、新兴国家和发达国家经济增长的影响
IF 5.3 Pub Date : 2022-01-01 DOI: 10.3934/qfe.2022020
Fisnik Morina, S. Grima
In this study, the authors aim to analyze the impact of pension asset investments on the economic growth of selected non-OECD countries, taking into account the controlling effect of gross fixed capital formation, domestic credit to the private sector, inflation, public debt and population. To conduct the econometric analysis in this study, the authors relied on secondary data published in the annual reports of the OECD, the World Bank and the IMF. Based on the econometric results of this study, the authors conclude that the investment of pension fund assets has positively impacted the economic growth of selected non-OECD countries (2002–2018). This study is of scientific importance because it provides detailed empirical evidence regarding the investment of pension funds in international financial markets and the effects of these investments on the economic growth of non-OECD countries. Moreover, the authors of this study through this scientific paper provide new scientific evidence to governments and policymakers in these countries on how to design appropriate strategic investment policies so that pension funds invest their pension assets at a safe rate of return from investments to ensure economic growth and efficiency in the capital markets. Given that most non-OECD countries are emerging and transition economies, the importance of this study lies in the fact that the authors, through empirical findings, highlight the importance of pension fund investments in global financial markets and the effects of these investments on the economic growth of these countries.
在这项研究中,作者旨在分析养老金资产投资对选定的非经合组织国家经济增长的影响,同时考虑到固定资本形成总额、私营部门国内信贷、通货膨胀、公共债务和人口的控制作用。为了进行本研究中的计量经济学分析,作者依赖于经合组织、世界银行和国际货币基金组织年度报告中发表的二手数据。基于本研究的计量经济学结果,作者得出结论,养老基金资产投资对选定的非经合组织国家(2002-2018)的经济增长产生了积极影响。这项研究具有重要的科学意义,因为它提供了关于养老基金在国际金融市场上的投资以及这些投资对非经合组织国家经济增长的影响的详细经验证据。此外,本研究的作者通过这篇科学论文为这些国家的政府和决策者提供了新的科学证据,以指导他们如何设计适当的战略投资政策,使养老基金以安全的投资回报率投资其养老金资产,以确保资本市场的经济增长和效率。鉴于大多数非经合组织国家都是新兴和转型经济体,本研究的重要性在于,作者通过实证研究结果强调了养老基金投资在全球金融市场中的重要性,以及这些投资对这些国家经济增长的影响。
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引用次数: 0
Fourier transform based LSTM stock prediction model under oil shocks 石油冲击下基于傅里叶变换的LSTM库存预测模型
IF 5.3 Pub Date : 2022-01-01 DOI: 10.3934/qfe.2022015
Xiaohang Ren, Weixin Xu, Kun Duan
This paper analyses the impact of various oil shocks on the stock volatility prediction by using a Fourier transform-based Long Short-Term Memory (LSTM) model. Oil shocks are decomposed into five components following individual oil price change indicators. By employing a daily dataset involving S & P 500 stock index and WTI oil futures contract, our results show that different oil shocks exert varied impacts on the dynamics of stock price volatility by using gradient descent. Having exploited the role of oil shocks, we further find that the Fourier transform-based LSTM technique improves forecasting accuracy of the stock volatility dynamics from both statistical and economic perspectives. Additional analyses reassure the robustness of our findings. Clear comprehension of the future stock market dynamics possesses important implications for sensible financial risk management.
本文利用基于傅立叶变换的长短期记忆(LSTM)模型分析了各种石油冲击对股票波动率预测的影响。石油冲击根据个别石油价格变化指标分解为五个部分。通过采用标准普尔500指数和WTI原油期货合约的日常数据,我们的研究结果表明,不同的石油冲击对股票价格波动动态的影响是不同的。利用石油冲击的作用,我们进一步发现基于傅立叶变换的LSTM技术从统计和经济角度提高了股票波动动态的预测精度。进一步的分析证实了我们发现的稳健性。对未来股票市场动态的清晰理解对明智的金融风险管理具有重要意义。
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引用次数: 5
Regulatory reform and trade settlement failures in USA equity markets: Does regulatory reform matter? 美国股票市场的监管改革与贸易结算失败:监管改革重要吗?
IF 5.3 Pub Date : 2022-01-01 DOI: 10.3934/qfe.2022023
Muath Asmar, Susanne Trimbath
Stock trades pass through several phases before completion, from placing an order via a brokerage firm, to the delivery of securities versus payment. This paper sheds light on the later phases of the trading process for equity securities in USA capital markets. In a continuous effort to improve the settlement process, the National Securities Clearing Corporation makes several substantial changes every year to the rules and regulations that govern the settlement process. This paper investigates the impact of rule changes on the efficiency of settlement, based on the volume of shares that failed to deliver from 2004 to 2017. The rule changes are modeled with a dummy variable in a vector autoregressive (VAR) model, where the quantity of fails and market returns are both included in the VAR model as endogenous variables. The results show a considerable impact of rule and regulation changes on the quantity of shares failed to be delivered in time for settlement; especially, the regulations implemented to improve short selling had a statistically significant impact on reducing settlement failures and improving market returns. The finding of this study provides important information for regulators and investors with regard to the settlement process and investment strategies.
股票交易在完成之前要经过几个阶段,从通过经纪公司下订单到证券交付与付款。本文阐明了美国资本市场股票证券交易过程的后期阶段。为了不断改进结算流程,国家证券结算公司每年都会对管理结算流程的规章制度进行几项重大修改。本文基于2004年至2017年未能交割的股票数量,研究了规则变化对结算效率的影响。在向量自回归(VAR)模型中使用虚拟变量对规则变化进行建模,其中失败数量和市场收益都作为内生变量包含在VAR模型中。结果表明,规则和法规的变化对未及时交割的股票数量有相当大的影响;特别是,为改善卖空而实施的法规对减少结算失败和提高市场回报具有统计上显著的影响。本研究的发现为监管机构和投资者提供了有关结算过程和投资策略的重要信息。
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引用次数: 3
Time-Frequency connectedness between developing countries in the COVID-19 pandemic: The case of East Africa 发展中国家在COVID-19大流行中的时频连通性:以东非为例
IF 5.3 Pub Date : 2022-01-01 DOI: 10.3934/qfe.2022032
Lorna Katusiime
Models of crisis prediction continue to gain traction with the increased frequency of global crisis such as the ongoing COVID-19 pandemic. Moreover, the connectedness of financial markets appears to be of central importance in determining how shocks spill through asset market linkages. The study thus applies the time-frequency connectedness measures of Diebold & Yilmaz (2012) and Baruník & Křehlík (2018) to examine return and volatility connectedness dynamics in East African Community (EAC) member states. The study found a strong interdependence among the considered EAC markets as indicated by the high values of total return and volatility spillover indices. This high degree of interdependence is reflected in both static time and frequency domain return and volatility connectedness, especially at the longer term frequency bands, an indication that return and volatility shocks are persistent. This result lends further support to existing evidence on the suitability of the EAC regional economic integration, including the possible eventual establishment of a monetary union. In addition, the dynamic spillover analysis indicates that connectedness among these EAC markets is highly time-varying and appears to be amplified during global crisis events such as the European debt crisis, Kenyan elections, commodity price shocks and the COVID-19 pandemic. However, the results suggest that relative to periods of domestic turbulence, financial market connectedness in the EAC is more likely to get amplified during periods of external global shocks. The study also contributes to emergent literature on connectedness among financial markets during the COVID-19 pandemic. Importantly, the study finds that the COVID-19 pandemic had a significant effect on all the considered EAC markets although the magnitude and direction of impact varies across markets and countries. In addition, the study finds that Brent Crude oil prices are a significant source of return and volatility spillovers to EAC markets especially during crisis periods.
随着2019冠状病毒病(COVID-19)大流行等全球危机日益频繁,危机预测模型继续受到关注。此外,金融市场的连通性似乎在决定冲击如何通过资产市场联系蔓延方面具有核心重要性。因此,该研究应用Diebold和Yilmaz(2012)以及Baruník和Křehlík(2018)的时频连通性度量来检查东非共同体(EAC)成员国的回报和波动连通性动态。研究发现,考虑的EAC市场之间存在很强的相互依存关系,这表明总回报和波动溢出指数的高值。这种高度的相互依赖反映在静态时域和频域收益和波动性的连通性上,特别是在较长期的频带上,这表明收益和波动性冲击是持续的。这一结果进一步支持了EAC区域经济一体化适用性的现有证据,包括最终建立货币联盟的可能性。此外,动态溢出分析表明,EAC市场之间的连通性具有高度时变性,在欧债危机、肯尼亚选举、大宗商品价格冲击和2019冠状病毒病大流行等全球危机事件期间,这种连通性似乎会被放大。然而,研究结果表明,相对于国内动荡时期,东亚共同体的金融市场连通性在外部全球冲击时期更有可能被放大。该研究还为关于2019冠状病毒病大流行期间金融市场之间连通性的新兴文献做出了贡献。重要的是,该研究发现,COVID-19大流行对所有考虑的EAC市场都产生了重大影响,尽管影响的程度和方向因市场和国家而异。此外,研究发现,布伦特原油价格是EAC市场回报和波动溢出的重要来源,特别是在危机时期。
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引用次数: 5
A survey comparative analysis of cartesian and complexity science frameworks adoption in financial risk management of Zimbabwean banks 津巴布韦银行金融风险管理中笛卡儿和复杂性科学框架采用的调查比较分析
IF 5.3 Pub Date : 2022-01-01 DOI: 10.3934/qfe.2022016
Gilbert Tepetepe, Easton Siment-Phiri, D. Morton
Traditionally, financial risk management is examined with cartesian and interpretivist frameworks. However, the emergence of complexity science provides a different perspective. Using a structured questionnaire completed by 120 Risk Managers, this paper pioneers a comparative analysis of cartesian and complexity science theoretical frameworks adoption in sixteen Zimbabwean banks, in unique settings of a developing country. Data are analysed with descriptive statistics. The paper finds that overally banks in Zimbabwe are adopting cartesian and complexity science theories regardless of bank size, in the same direction and trajectory. However, adoption of cartesian modeling is more comprehensive and deeper than complexity science. Furthermore, due to information asymmetries, there is diverging modeling priorities between the regulator and supervisor. The regulator places strategic thrust on Knightian risks modeling whereas banks prioritise ontological, ambiguous and Knightian uncertainty measurement. Finally, it is found that complexity science and cartesianism intersect on market discipline. From these findings, it is concluded that complexity science provides an additional dimension to quantitative risk management, hence an integration of these two perspectives is beneficial. This paper makes three contributions to knowledge. First, it adds valuable insights to theoretical perspectives on Quantitative Risk Management. Second, it provides empirical evidence on adoption of two theories from developing country perspective. Third, it offers recommendations to improve Quantitative Risk Management policy formulation and practice.
传统上,金融风险管理是用笛卡尔和解释主义的框架来检查的。然而,复杂性科学的出现提供了一个不同的视角。利用120名风险管理人员完成的结构化问卷,本文率先对16家津巴布韦银行在发展中国家的独特环境中采用笛卡尔和复杂性科学理论框架进行了比较分析。用描述性统计分析数据。本文发现,无论银行规模大小,津巴布韦的银行总体上都在同一方向和轨迹上采用笛卡尔和复杂性科学理论。然而,笛卡尔模型的采用比复杂性科学更全面、更深入。此外,由于信息不对称,监管者和监管者之间存在不同的建模优先级。监管机构将战略重点放在奈特风险建模上,而银行则优先考虑本体论、模糊和奈特不确定性测量。最后,发现复杂性科学与笛卡笛卡尔主义在市场学科上的交叉。从这些发现可以得出结论,复杂性科学为定量风险管理提供了一个额外的维度,因此这两个观点的整合是有益的。本文对知识有三个贡献。首先,它为定量风险管理的理论视角增加了有价值的见解。第二,从发展中国家的角度对两种理论的采用提供了实证证据。第三,提出了改进量化风险管理政策制定和实践的建议。
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引用次数: 0
Impact of macroeconomic indicators on bankruptcy prediction models: Case of the Portuguese construction sector 宏观经济指标对破产预测模型的影响:以葡萄牙建筑业为例
IF 5.3 Pub Date : 2022-01-01 DOI: 10.3934/qfe.2022018
Ana Sousa, A. Braga, Jorge Cunha
The importance of macroeconomic indicators on the performance of bankruptcy prediction models has been a contentious issue, due in part to a lack of empirical evidence. Most indicators are primarily centered around a company's internal environment, overlooking the impact of the economic cycle on the status of the company. This research brings awareness about the combination of microeconomic and macroeconomic factors. To do this, a new model based on logistic regression was combined with principal component analysis to determine the indicators that best explained the variations in the dataset studied. The sample used comprised data from 1,832 Portuguese construction companies from 2009 to 2019. The empirical results demonstrated an average accuracy rate of 90% up until three years before the bankruptcy. The microeconomic indicators with statistical significance fell within the category of liquidity ratios, solvency and financial autonomy ratios. Regarding the macroeconomic indicators, the gross domestic product and birth rate of enterprises proved to increase the accuracy of bankruptcy prediction more than using only microeconomic factors. A practical implication of the results obtained is that construction companies, as well as investors, government agencies and banks, can use the suggested model as a decision-support system. Furthermore, consistent use can lead to an effective method of preventing bankruptcy by spotting early warning indicators.
宏观经济指标对破产预测模型表现的重要性一直是一个有争议的问题,部分原因是缺乏经验证据。大多数指标主要围绕公司的内部环境,忽视了经济周期对公司地位的影响。这项研究使人们认识到微观经济和宏观经济因素的结合。为此,将基于逻辑回归的新模型与主成分分析相结合,以确定最能解释所研究数据集中变化的指标。使用的样本包括2009年至2019年1832家葡萄牙建筑公司的数据。实证结果表明,直到破产前三年,平均准确率为90%。具有统计学意义的微观指标分别为流动性比率、偿付能力比率和财务自主权比率。在宏观经济指标方面,国内生产总值和企业出生率被证明比仅使用微观经济因素更能提高破产预测的准确性。研究结果的实际意义是,建筑公司以及投资者、政府机构和银行都可以将该模型用作决策支持系统。此外,持续使用可以通过发现早期预警指标有效地防止破产。
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引用次数: 3
The insolvency choice during an economic crisis: the case of Canada 经济危机中的破产选择:以加拿大为例
IF 5.3 Pub Date : 2022-01-01 DOI: 10.3934/qfe.2022029
Wilner Predelus, Samir Amine
Total insolvencies filed by Canadian Households reached a record number in 2009 when close to 152,000 individuals sought the protection of the Bankruptcy and Insolvency Act. This paper aims to investigate the factors that dictate the choice of insolvent debtors during an economic crisis, by comparing their choice before, during and after the crisis. Using data provided by the Office of the Superintendent of Bankruptcy, and in addition to explain insolvency choice by the debtor's wealth, income and level of debt, the results show that insolvent debtors are more likely to file for bankruptcy during an economic crisis than before and after. This is in fact, a significant contribution to the literature, for never before had debtors' insolvency choice been looked at in light of the effects of an economic crisis.
2009年,加拿大家庭申请破产的总人数达到了创纪录的水平,当时有近15.2万人寻求《破产和资产法》的保护。本文旨在通过比较资不抵债者在经济危机前、危机中和危机后的选择,来研究决定资不抵债者在经济危机期间选择的因素。利用破产监督办公室提供的数据,并通过债务人的财富、收入和债务水平来解释破产选择,结果表明,在经济危机期间,破产债务人比之前和之后更有可能申请破产。事实上,这是对文献的重大贡献,因为以前从未有人根据经济危机的影响来研究债务人的破产选择。
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引用次数: 1
期刊
Quantitative Finance and Economics
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