This paper introduces a multi-layer network approach to explore risk contagions in a sample of top energy firms in the world. Large energy companies play a very important role in the international energy market. Mapping their responses to different types of shocks provides profound implications...

Using the Belt and Road Initiative (BRI) as a quasi-natural experiment, this paper studies the impact of regional cooperation agreements (RCAs) on international tourism based on the Propensity Score Matching and Difference-in-Differences regression approach (PSM-DID). This paper also quantifies...

The emission trading scheme (ETS) provides a market mechanism to mitigate carbon emissions and has been introduced in many countries. Its fundamental idea is to make carbon emissions costly. Consequently, firms undertaking cross-border expansions may have to consider this extra cost when...

Three urban growth theories predict parallel growth of cities. The endogenous growth theory predicts deterministic parallel growth; the random growth theory implies that city growth follows Gibrat's law with a steady-state distribution; and the hybrid growth theory suggests the co-movement of...