- Assistant Professor, Kyungpook National University, South Korea
- March 2021 ~ present
- Associate Research Fellow, Korea Research Institute for Human Settlements, South Korea
- February 2019 ~ February 2021
- National Infrastructure Research Division - Duties and Responsibilities: developing land use integrated transportation demand models and regional transportation plans, a variety of projects focused on travel behavior, zero emission vehicles, and spatial Big data analytics
- February 2019 ~ February 2021
- Postdoctoral Researcher, University of California, Davis, United States
- October 2017 ~ February 2019
- Plug-in Hybrid & Electric Vehicle (PH&EV) Research Center- Duties and Responsibilities: developing GIS-based tools and research products for a variety of projects focused on travel and vehicle fueling data and forecasts, and performing statistical analysis of new travel data, and writing and editing reports.
- October 2017 ~ February 2019
- Postdoctoral Researcher, University of Washington, Seattle, United States
- October 2016 ~ September 2017
- Project: A three-population three-scale social network model to assess disease dispersion (NIH project #: 1R01GM108731-01A1) - Duties and Responsibilities: Researcher, machine learning of big data for trajectory derivation; using external data and resources for validations; data analysis and written/oral presentation of results; participation in teaching and community outreach activities; and participation in proposal preparation activities
- October 2016 ~ September 2017
- Instructor, University of Washington, Seattle, United States
- April 2017 ~ June 2017
- Urban transportation planning and design (CEE 416): Developed lecture materials and gave lectures, graded problem sets, papers and exams
- April 2017 ~ June 2017
- Graduate Student Researcher, April 2013 ~ September 2013, April 2014 ~ September 2016
- University of California, Santa Barbara, California, United States
- Project: Long Distance Travel in the California Household Travel Survey (CHTS) and Social Media Augmentation - Duties and Responsibilities: Researcher, developing a method to extract long distance travel from social media data, developing models to identify the determinants of long distance travel
- Project: Combining California Household Travel Survey Data with Harvested Social Media Information to Form a Self-Validating, Statewide, Origin-Destination Travel Prediction Method - Duties and Responsibilities: Lead researcher, developing a method to convert social media data into OD trips from conventional travel demand model; creating multiple maps to compare the OD trips from the different sources; developing statistical models to compare the OD trips, which account for spatial dependency and heterogeneity
- Project: Business Establishment Survival and Transportation System Level of Service - Duties and Responsibilities: Researcher, running GIS-based model to evaluate the level of service of transportations system; developing statistical models to test the longitudinal relationship between Business Establishment survival and transport system
- Project: Spatial Transferability Using Synthetic Population Generation Methods - Duties and Responsibilities: Researcher, reviewing population synthetic population generation model; computing indicators which reflect diverse spatial characteristics including land use and road networks
- University of California, Santa Barbara, California, United States
- Teaching Assistant, January 2014 ~ March 2014, January 2013 ~ March 2013
- University of California, Santa Barbara, California, United States
- Transportation planning and modeling (Geog 111A/211A): Developed lecture materials used in the lab sections, ran sections/labs & graded problem sets, papers and exams
- University of California, Santa Barbara, California, United States
- Researcher, October 2011 ~ August 2012
- Division of Regional Development, Korea Research Institute for Local Administration
- Project: ‘A Study on the Development of Strategies for Vitalizing Regional Collaboration’ funded by the South Korean Presidential Committee on Regional Development and the Ministry of Public Administration and Security - Duties and responsibilities: Design and conducting survey, Qualitative and Quantitative analysis for problem diagnosis and the development of policies regarding local development issues, Create thematic maps using ArcGIS in order to identify spatial disparity issues in terms of local economics, tourism industry and transportation systems, Developing policy alternatives for local development through vitalizing regional collaboration
- Division of Regional Development, Korea Research Institute for Local Administration
- Researcher, February. 2010 ~ May. 2011
- The Centre for Korea Transport Database, The Korea Transport Institute
- Project: ‘Researched for the National Transportation Demand & Construction of a Transportation Database’ funded by the South Korean Ministry of Land, Transport and Maritime Affairs - Duties and responsibilities: Gathered transportation statistics published by Korean institutes, international organizations (UN, OECD, World bank) and other nations, Evaluated all statistics gathered based on the necessity for Korean transportation researchers and policy makers, then transforming the data according to data users’ requirements, Generated statistics by querying raw data (a notable example is that architectural area was aggregated by zone and purpose with SQL server program by querying 17million registered building data obtained from Korean government), Edited and Published Korea National Transport Statistics including trend analysis, Designed and conducted National Transport Statistics user requirement survey and analyzing results from the survey
- Project: ‘Development of a Transport Policy and Demand Analysis System’ funded by the Korea Institute of Construction & Transportation Technology Evaluation and Planning - Duties and responsibilities: Wrote critical review reports for contemporary transport demand analysis programs (TransCAD, EMME/3, TranSIM, CUBE, VISUM), Designed and conducted user requirement survey for Transport Policy and Demand Analysis System, Managed entire project including budget planning and managing research contracts with other institutes
- The Centre for Korea Transport Database, The Korea Transport Institute
- Research Assistant, March 2006 ~ February 2010
- KyungHee University, Seoul, South Korea
- Project: ‘Research on the travel pattern difference between age groups in the Seoul Metropolitan Area, Research Program sponsored by KyungHee University - Duties: Travel pattern analysis by using SPSS with Korean National Travel Survey data
- Project: ‘Comparative study of consumer shopping behavior in the metropolitan area of East Asian countries, International Research Cooperation Program sponsored by the Institute of Urban Spatial Information Studies of Fukuoka University’ - Duties: Design and conducting survey of consumer shopping behavior in Seoul, Data cleaning and cluster analysis with SAM (Sequential Alignment Method)
- Project: ‘Research on the characteristics of urban spatial behavior in the information society and the future change in spatial behavior, Junior Professor Program (Humanities and Society) sponsored by the Korea Research Foundation - Duties: Design and conducting activity-travel diary survey of people in Seoul metropolitan area
- KyungHee University, Seoul, South Korea