This paper provides the concept of import dependence between countries, which is a relative quantity. In order to reveal the evolutionary characteristics of the import dependence between countries in energy trade and its influencing factors, firstly, based on the network analysis method, this...

This paper measures China’s daily and monthly climate policy uncertainty (CPU) from Jan 2000 to Mar 2022 based on Chinese news data for the first time. Then, the nonlinear and lag impacts of the US CPU and China’s CPU on the return, volatility, correlation and tail dependence of China’s...

Understanding the influence pathways of financial development on environmental quality is necessary for policy makers in China to improve the quality of the environment through financial means; however, these points have not been systematically discussed in the literature. Therefore, to fill...

This paper focuses the various impact of the severity of COVID-19 development on air quality in different types of cities. We analyze the different degrees of improvement of concentrations of six air pollutants (PM2.5, PM10, SO2, NO2, CO and O3) in different types of Chinese cities with...

This paper is to reveal the dynamic characteristics of crude oil price bubble volatility from intrinsic temporal and spatial scales. For this purpose, volatility series is mapped to the dynamic model described by the Langevin equation. And the Backward Sup Augmented Dickey-Fuller is used to...

This paper measures China’s daily and monthly climate policy uncertainty (CPU) from Jan 2000 to Mar 2022 based on Chinese news data for the first time. Then, the nonlinear and lag impacts of the US CPU and China’s CPU on the return, volatility, correlation and tail dependence of China’s...

We examine the literature on the financial economics of precious metals from a bibliometric and scientometric perspective. We surface the main trends and authors in the area over the last two decades, and provide estimates of the density of the networks of researchers and research. Clear...

The risk spillover of the energy stock market has become a research hot spot in the field of energy finance. Investors can avoid risks through the risk spillover relationship between listed companies, and regulators can warn of systemic risks. Therefore, it is necessary to predict the risk...

The World Wide Web contains a vast corpus of consumer-generated content that holds invaluable insights for improving the product and service offerings of firms. Yet the typical method for extracting diagnostic information from online content—text mining—has limitations. As a starting point,...