My primary research fields are environmental economics, industrial organization, and applied microeconomics. During doctoral degree program, I tried to answer questions as a citizen or customer by applying economic frameworks or statistic method. My current research focuses on transportation, pollution, and market structure.
The Impact of Fuel Efficiency Improvement on Driving Behavior
of NYC Taxi Drivers
By fuel efficiency improvement, NYC taxi drivers may drive more. This changing behavior indicates enlargement emission and supply. Based on the fixed effect model, several aspects of taxi driving are estimated. The results represent that drivers trip longer distance with high efficient car. However, they do not spend more time on shift with high efficient car and high efficient car does not more used for operation. In conclusion, improvement of efficiency of NYC taxi stimulates drivers to search customer more but it does not improve supply.
Stay at Home: The Impact of Air Pollution on the Korean Baseball
People tend to avoid pollution to protect themselves and pollution decreases performance of human body. So, high level air pollution can cause people to avoid outdoor activities and decrease labor productivity. Professional sport allows to capture human behavior as number. Using Korean professional baseball data, I estimate the impact of air pollution on the stadium attendance. The results show that the level air pollution is not effective but the notice of bad stage decreases attendance
Spatial and Two-sector Competition in The South Korean
Self-employees has taken a huge portion in Korean economics but their economic situation is very weak. The minimum distance policy is the most widely requested for self-employment protection. To understand impact of this policy, I set up the structural model of entry game in small retail stores in Seoul. Based on the result of structural model estimation, this policy is meaningful without considering corporation store entry but a new grocery store chains can eliminate impact of the minimum distance policy
The Effects of High School Curriculum on Youth Labor Market
With Keunkwan Ryu (Under Review)
In 2000, the Korean government enforced a less challenging high school curriculum called the public 7th curriculum. The most notable change was reduced difficulty in mathematics. This less difficult curriculum caused mathematics/science major students to earn a lower monthly wages of after graduation jobs.