Robustness and resilience of supply chains during the COVID-19 pandemic.

Using a unique firm-level data set from Asia, this study examines what determined the robustness and resilience of supply chain links, that is, the ability of maintaining links and recovering disrupted links by substitution, respectively, when firms faced economic shocks due to the spread of the coronavirus disease (COVID-19). We find that a supply chain link was likely to be robust if the link was between a foreign-owned firm and a firm located in the foreign-owned firm's home country, implying that homophily on a certain dimension generates strong ties and thus supply chain robustness. We also find that firms with geographic diversity of customers and suppliers tended to increase their transaction volume with one partner while decreasing the volume with others.

How effective was the restaurant restraining order against COVID-19? A nighttime light study in Japan.

In this study, we examined the effect of the order of shortening business hours of the restaurants, which are considered a major source of spreading the novel coronavirus (COVID-19). Specifically, we empirically investigated how this order changed the nighttime light (NTL) in regions with restaurants in the Greater Tokyo area from January to June 2020. Several local governments in Japan had implemented the order to combat COVID-19.

Can e-commerce mitigate the negative impact of COVID-19 on international trade?

This study aims to empirically investigate the role of E-commerce (EC) on the trade impacts of COVID-19. To this end, we estimate gravity equations for bilateral trade among 34 reporting countries and their 145 partner countries during January-August in 2019 and 2020. Our major findings can be summarized as follows.