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分析印度金融风险与经济风险之间的联系:基于小波相干和非参数方法的证据

Analyzing the nexus between financial risk and economic risk in India: Evidence through the lens of wavelet coherence and non-parametric approaches.

作者信息

Ramzan Muhammad, Adebayo Tomiwa Sunday, Iqbal Hafiz Arslan, Razi Ummara, Wong Wing-Keung

机构信息

Faculty of Management and Administrative Sciences, Department of Commerce, University of Sialkot, Punjab, Pakistan.

School of International Trade and Economics, Shandong University of Finance and Economics, Jinan, 250014, Shandong, China.

出版信息

Heliyon. 2023 Mar 2;9(3):e14180. doi: 10.1016/j.heliyon.2023.e14180. eCollection 2023 Mar.

Abstract

The gravest challenge for economic sustainability is the undetermined growth in the financial and economic risks of the nation, which need to be overcome with adequate measures without compromising economic growth. The uncertainty of economic factors produces fluctuations in the financial sector and makes them more vulnerable. However, the existing literature has not significantly focused on the economic and financial risk challenge for sustainable economic growth. Therefore, to fill the gap, an in-depth study is imperative to explore the association between these risks. To do so, this study incorporates both economic and financial risk to determine how risks are interconnected across time (frequency) and how they are linked by utilizing quarterly data from 1984-Q1 to 2020-Q4 and by applying both the "wavelet power spectrum (WPS)" and "wavelet coherence (WTC)" approaches, to examine the time-frequency dependency of each variable on the other. The findings of WTC revealed that the economic and financial risks have a positive dependency on each other in India at high, medium, and low frequencies. Likewise, the wavelet power spectrum outcomes reflect the high economic and financial risks vulnerability during 1991, 1992, and 1996. In addition, for the robustness check, the study employed both the "quantile regression (QR)" and "quantile-on-quantile regression (QQR)". Both the QQR and QR endorsed the positive association between FR and ER. Hence, our paper is the first research of its kind for the Indian economy, and it extends to the existing literature by examining the link between the two most significant indicators in terms of both time and frequency dependency. The findings in our paper offer excellent perspectives for investors and policymakers to assess prospects for investment and policy changes if necessary.

摘要

经济可持续性面临的最严峻挑战是国家金融和经济风险的不确定增长,需要采取适当措施加以克服,同时又不损害经济增长。经济因素的不确定性导致金融部门出现波动,并使其更加脆弱。然而,现有文献并未显著关注可持续经济增长所面临的经济和金融风险挑战。因此,为填补这一空白,有必要进行深入研究,以探索这些风险之间的关联。为此,本研究纳入了经济和金融风险,以确定风险如何随时间(频率)相互关联,以及它们如何通过利用1984年第一季度至2020年第四季度的季度数据,并应用“小波功率谱(WPS)”和“小波相干(WTC)”方法来研究每个变量对另一个变量的时频依赖性。WTC的研究结果表明,在印度,经济和金融风险在高、中、低频上相互之间存在正相关性。同样,小波功率谱结果反映出1991年、1992年和1996年期间经济和金融风险的高脆弱性。此外,为进行稳健性检验,本研究采用了“分位数回归(QR)”和“分位数对分位数回归(QQR)”。QQR和QR均证实了金融风险(FR)和经济风险(ER)之间的正相关关系。因此,我们的论文是针对印度经济的同类研究中的首例,通过从时间和频率依赖性两方面考察两个最重要指标之间的联系,扩展了现有文献。我们论文中的研究结果为投资者和政策制定者评估投资前景以及必要时的政策变化提供了绝佳视角。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1a9a/10009734/63bafe3b8cac/gr1.jpg

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