Does faster broadband generate more economic benefits than normal-speed broadband? This study examines the differential economic impacts of broadband of different speeds. Utilizing the broadband availability and speed data from the National Broadband Map, a first-differenced regression analysis...

Using a difference-in-difference-in-differences (DDD) strategy, we study the effects of simultaneous water and air pollution regulations on firms' emission behaviors and explore the driving forces behind their responses. We show that in China's eleventh Five-Year Plan (FYP), there exists a...

We design a novel empirical framework to examine market efficiency through out-of-sample(OOS) predictability. We frame the classic empirical asset pricing problem as a machine learningclassification problem. We construct classification models to predict return states. The prediction- based...

Although the trade-boosting effect of the Internet is well-documented, two critical questions remain unsatisfactorily answered. First, does the Internet benefit the trade in services greater than the trade in goods? Second, does the Internet eliminate or at least, weaken the negative effect of...