Who Travels Longer? Travel Time Inequality by Gender, Age, and Urban Form
Under review (Transportation Planning and Technology).

Including Children in Daily Travel: Patterns and Determinants of Caregiver Choices
Manuscript in Preparation

Autonomy in Motion: Children’s Travel Modes to School
Manuscript in Preparation

Closer, But Not the Same: Gender, Age, and the Realized Costs of Access
Manuscript in Preparation

The uneven spatial distribution of the Impact of Economic Recession: Focusing on the changes in women’s unemployment
Manuscript in Preparation

---

Constraints or Freedom? Relationships between Destination Accessibility and Activity Spaces
Transport Findings (Published, 2025)
Full Text >

---

Sheltering in place: unveiling how urban park characteristics shaped visiting patterns during the pandemic using machine learning
Computational Urban Science (Published, 2025)
Full Text >

---

Changes in service distances of urban parks before and after the COVID-19 Pandemic: Applying a modified gravity model for Seoul Metropolitan Area
arXiv (Published, 2023)
Full Text >

---

Nocturnal vs. diurnal: Relationship between land use and visit time patterns in commercial areas
Applied Spatial Analysis and Policy (Published, 2023)
Full Text >

---

Changes in the Number of Urban Park Users Due to the Spread of COVID-19: Time Series Big Data Analysis
Journal of the Korean Regional Science Association (Published, 2021)
Full Text >

---

Nocturnal vs. Diurnal: Comparison of Land Use by Type of Commercial Districts
Applied Spatial Analysis and Policy (Published, 2022)
Full Text >

---

A Study on the Introduction of Community Impact Assessment for Inclusive and Sustainable Development
Presidential Committee for Balanced National Development, Republic of Korea (2020)
Full Text >

A Study on Health and Housing Conditions of Urban Slum Residents
Doctors’ Action for Health, NPO (2019)
Full Text >

A Study on the Improvement of Monitoring Program for Urban Renewal Projects
Seoul Metropolitan Government Advisory Group for the Urban Planning Commission (2018)
Full Text >

---

Travel behavior of children and caregivers using the Danish National Household Travel Survey
FEB 2025 – JUL 2025
In collaboration with Prof. Anders Fjendbo Jensen at the Technical University of Denmark (DTU), this project analyzed how children and their caregivers travel in Denmark, using the Danish National Household Travel Survey to identify patterns, needs, and constraints.

---

Destination Accessibility and Activity Spaces of Granada, Spain
MAR 2025 – OCT 2025
Served as a Research Assistant for Prof. Carole Voulgaris on a project examining how residents access daily destinations in Granada, Spain. This study examined variations in accessibility and the size and structure of individuals’ activity spaces.

---

Comparative study on rental deserts: The cases of the U.S. and France
SEP 2024 – FEB 2025
Served as a Research Assistant for Prof. Magda Maaoui on a project analyzing rental deserts in the U.S. and France, with a focus on factors contributing to housing inequality.

---

Children’s independent mobility and active travel to School
MAY 2023 – MAY 2024
In collaboration with Prof. Gregory Macfarlane at Brigham Young University and Prof. Anders Fjendbo Jensen at the Technical University of Denmark (DTU), this project studies the relationship between children’s independent mobility and the use of active modes of transportation to school.

---

Identifying walking trips using phone location-based data
OCT 2022 – APR 2023
Served as a Research Assistant for Prof. Carole Voulgaris on a project developing an equation to quantify the difference between trips made by walking and those made by other modes of transportation. Phone-recorded, location-based big data (LBD) were cleaned and used to train a machine learning model with travel survey data.

---

Quantifying the Impact of Income Inequality on Risk of COVID-19
SEP 2021 – FEB 2022
While the income divide will likely rise due to job losses during recessions, those who suffers from low income might face a greater risk of COVID-19 infection. This study aims to examine the association between individual and local level factors related to income disparity and health issues.

---

The Effect of COVID-19 and Fine Dust on the Use of Urban Parks
JUN 2020 – FEB 2022
This study aims to analyze how the COVID-19 pandemic and the increased air pollution influences changes in the use of urban parks and travel behavior by adopting the big data analysis and machine learning algorithms on the spatial-temporal patterns of visitors.
In Detail >