Hyojung Lee
Biographic Data
| ID | 4259774 |
|---|---|
| NAME | Hyojung Lee |
| GIVEN NAMES | Hyojung |
| FAMILY NAME | Lee |
| SIGNATURE | LEE H |
| AFFILIATIONS | Kyungpook National University |
| ORCID | 0000-0002-0471-6650 |
| VERIFIED | Yes |
| TOTAL WORKS | 22 |
| TOTAL CITATIONS | 42 |
| AUTHOR COUNT | 22 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2008 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 2 |
Misalignment of Housing Growth and Population Trends: Cohort Size and Lagging Measurements Through Recession and Recovery
Population and housing growth are closely linked in the U.S. Census, less so in analysis. Overlooked changes in cohort size and lagged measurements have misled about current housing preferences, and quantity of housing needed, with mistiming producing great volatility. Drawing on decennial census data and American Community Surveys, we develop a cohort-based housing lifecycle model measuring active household formation of renters and owners in int…
Disparities in Residential Mobility Outcomes Among Older Adults in the United States
The older population in the United States is growing rapidly, yet their residential mobility patterns are understudied. Using the confidential version of the American Community Survey, this study examines variations in residential mobility outcomes across population subgroups, focusing on racial/ethnic and educational groups. Findings reveal disparities among older adult households: households of color and less-educated households often relocate …
Upzoning and gentrification: Heterogeneous impacts of neighbourhood-level upzoning in New York City
In light of the calls to relax restrictive density regulations, this paper examines how increasing residential development capacity, i.e. upzoning, may change the demographic, socio-economic and housing characteristics of the affected neighbourhoods. We examine the neighbourhood-level upzonings of New York City to answer this question. We find that upzoning is positively associated with signs of gentrification – upzoned neighbourhoods became whit…
Uncovering Covid-19 transmission tree: Identifying traced and untraced infections in an infection network
Introduction: This paper presents a comprehensive analysis of COVID-19 transmission dynamics using an infection network derived from epidemiological data in South Korea, covering the period from January 3, 2020, to July 11, 2021. The network illustrates infector-infectee relationships and provides invaluable insights for managing and mitigating the spread of the disease. However, significant missing data hinder conventional analysis of such netwo…
Analysis of the impact of Covid-19 variants and vaccination on the time-varying reproduction number: Statistical methods
Introduction: The COVID-19 pandemic has profoundly impacted global health systems, requiring the monitoring of infection waves and strategies to control transmission. Estimating the time-varying reproduction number is crucial for understanding the epidemic and guiding interventions. Methods: Probability distributions of serial interval are estimated for Pre-Delta and Delta periods. We conducted a comparative analysis of time-varying reproduction …
Data-driven analysis of the effect of screening and treatment on the spread of HIV in developing and developed countries
Introduction: In this study, we used a mathematical epidemic model to explore the status of the HIV epidemic in the USA and Pakistan. In addition to studying the dynamics of the model, we fitted the model with recent data to estimate the parameters describing the epidemic in both countries. Results: Our estimation shows that in the USA, the reproduction number is 0.9688 (0.9684, 0.9694); if the reproduction number is maintained at this level, it …
Back to the suburbs? Millennial residential locations from the Great Recession to the pandemic
In the past decade, there has been a great deal of attention paid to and speculation about the residential mobility and location decisions of millennials. Academics and practitioners alike have been trying to determine where millennials are moving and why, including whether they are leading a ‘back to the city’ movement or whether they are moving to the suburbs as previous generations did at their age. Using US Census data, this article examines …
Detection of Covid-19 epidemic outbreak using machine learning
Background: The coronavirus disease (COVID-19) pandemic has spread rapidly across the world, creating an urgent need for predictive models that can help healthcare providers prepare and respond to outbreaks more quickly and effectively, and ultimately improve patient care. Early detection and warning systems are crucial for preventing and controlling epidemic spread. Objective: In this study, we aimed to propose a machine learning-based method to…
Improved time-varying reproduction numbers using the generation interval for Covid-19
Estimating key epidemiological parameters, such as incubation period, serial interval (SI), generation interval (GI) and latent period, is essential to quantify the transmissibility and effects of various interventions of COVID-19. These key parameters play a critical role in quantifying the basic reproduction number. With the hard work of epidemiological investigators in South Korea, estimating these key parameters has become possible based on i…
The Geography of Gentrification and Residential Mobility
Gentrification research often starts with the hypothesis that gentrification causes displacement of a neighborhood’s original residents, particularly low-income and vulnerable residents. Recent research based on large-scale quantitative data suggests that the displacement effects of gentrification for low-income residents evident from case studies and qualitative data are modest at the macroscale. We use geocoded microdata from the American Commu…
Can U.S. planned communities become diverse? The case of industry-leading master-planned communities in five metro areas
The history of master-planned community (MPC) development is inseparable from the history of race- and class-based discrimination and segregation in the United States. This paper investigates the place of exclusion and inclusion in planned community development practice. We undertook qualitative and quantitative analyses of the MPC development practice from the 1990s to the present. Through archival analysis and interviews, we demonstrate that, b…
Public responses to Covid‐19 case disclosure and their spatial implications
We study how the public changes their mobility and retail spending patterns as precautionary responses to the disclosed location of COVID‐19 cases. To look into the underlying mechanisms, we investigate how such change varies spatially and whether there is any spatial spillover or substitution. We use the daily data of cell phone‐based mobility and credit card transactions between February 10 and May 31 in both 2019 and 2020 in Seoul, South Korea…
Subcritical Transmission in the Early Stage of Covid-19 in Korea
While the coronavirus disease 2019 (COVID-19) outbreak has been ongoing in Korea since January 2020, there were limited transmissions during the early stages of the outbreak. In the present study, we aimed to provide a statistical characterization of COVID-19 transmissions that led to this small outbreak. We collated the individual data of the first 28 confirmed cases reported from 20 January to 10 February 2020. We estimated key epidemiological …
Analysis of Superspreading Potential from Transmission Clusters of Covid-19 in South Korea
The COVID-19 pandemic has been spreading worldwide with more than 246 million confirmed cases and 5 million deaths across more than 200 countries as of October 2021. There have been multiple disease clusters, and transmission in South Korea continues. We aim to analyze COVID-19 clusters in Seoul from 4 March to 4 December 2020. A branching process model is employed to investigate the strength and heterogeneity of cluster-induced transmissions. We…
Assessment of Social Distancing for Controlling Covid-19 in Korea: An Age-Structured Modeling Approach
The outbreak of the novel coronavirus disease 2019 (COVID-19) occurred all over the world between 2019 and 2020. The first case of COVID-19 was reported in December 2019 in Wuhan, China. Since then, there have been more than 21 million incidences and 761 thousand casualties worldwide as of 16 August 2020. One of the epidemiological characteristics of COVID-19 is that its symptoms and fatality rates vary with the ages of the infected individuals. …
Effects of the Community Reinvestment Act on small business lending
This study examines the effectiveness of the Community Reinvestment Act (CRA) in facilitating small business lending to lower-income neighborhoods. Taking advantage of an exogenous policy shock that resulted in neighborhood-level changes in CRA eligibility, we identify changes in small business lending in tracts that became CRA eligible and CRA ineligible and compare these with control groups constructed in two ways. The results of our difference…
Bank adaptation to neighborhood change: Mortgage lending and the Community Reinvestment Act
This research explores whether banks strategically leverage regulatory rules for the Community Reinvestment Act that fix a neighborhood's eligibility status over a decade based on a neighborhood's economic trajectory over that decade. Using 2004–2011 Home Mortgage Disclosure Act (HMDA) data, we find that banks approve loans more frequently in those neighborhoods that are most rapidly improving, and that this effect is stronger if the neighborhood…
Are Millennials Coming to Town? Residential Location Choice of Young Adults
How widespread is the downtown resurgence among the current generation of young adults 25 to 34 years old, often referred to as the Millennials? Answering the question, this article provides a detailed analysis of the past, current, and future geographic population distribution, focusing on the young adults. It first documents the demographic shifts from 1990 to 2015 by distance from the central business districts (CBDs) of the 50 largest U.S. me…
Modelling a Supplementary Vaccination Program of Rubella Using the 2012–2013 Epidemic Data in Japan
From 2012-2013, Japan experienced a major epidemic of rubella, involving a total of 12,614 rubella cases and 45 confirmed cases of congenital rubella syndrome (CRS). One of the contributory factors in this outbreak may have been that the majority of adult males remained unvaccinated. To plan for a supplementary immunization program (SIP) to elevate the herd immunity level, it is critical to determine the required amount of vaccine and identify th…
K-pop in Korea: How the Pop Music Industry Is Changing a Post-Developmental Society
Korean popular songs, or kayo , are evolving from a musical genre created and performed only by Koreans into K-pop, a global musical genre produced and enjoyed by Koreans and those of other nationalities. This new development has revolutionized the perception of the popular music industry in Korea’s post-developmental society, as Korean children dream of becoming K-pop idols rather than entering traditionally esteemed careers in politics, medicin…
Inhibitory effects of casticin on migration of eosinophil and expression of chemokines and adhesion molecules in A549 lung epithelial cells via NF-κB inactivation
Uncoupled protein 3 and p38 signal pathways are involved in anti-obesity activity of Solanum tuberosum L. cv. Bora Valley
K-pop in Korea: How the Pop Music Industry Is Changing a Post-Developmental Society
Korean popular songs, or kayo , are evolving from a musical genre created and performed only by Koreans into K-pop, a global musical genre produced and enjoyed by Koreans and those of other nationalities. This new development has revolutionized the perception of the popular music industry in Korea’s post-developmental society, as Korean children dream of becoming K-pop idols rather than entering traditionally esteemed careers in politics, medicin…
Are Millennials Coming to Town? Residential Location Choice of Young Adults
How widespread is the downtown resurgence among the current generation of young adults 25 to 34 years old, often referred to as the Millennials? Answering the question, this article provides a detailed analysis of the past, current, and future geographic population distribution, focusing on the young adults. It first documents the demographic shifts from 1990 to 2015 by distance from the central business districts (CBDs) of the 50 largest U.S. me…
Back to the suburbs? Millennial residential locations from the Great Recession to the pandemic
In the past decade, there has been a great deal of attention paid to and speculation about the residential mobility and location decisions of millennials. Academics and practitioners alike have been trying to determine where millennials are moving and why, including whether they are leading a ‘back to the city’ movement or whether they are moving to the suburbs as previous generations did at their age. Using US Census data, this article examines …
Upzoning and gentrification: Heterogeneous impacts of neighbourhood-level upzoning in New York City
In light of the calls to relax restrictive density regulations, this paper examines how increasing residential development capacity, i.e. upzoning, may change the demographic, socio-economic and housing characteristics of the affected neighbourhoods. We examine the neighbourhood-level upzonings of New York City to answer this question. We find that upzoning is positively associated with signs of gentrification – upzoned neighbourhoods became whit…
Uncoupled protein 3 and p38 signal pathways are involved in anti-obesity activity of Solanum tuberosum L. cv. Bora Valley
Inhibitory effects of casticin on migration of eosinophil and expression of chemokines and adhesion molecules in A549 lung epithelial cells via NF-κB inactivation
K-pop in Korea: How the Pop Music Industry Is Changing a Post-Developmental Society
Korean popular songs, or kayo , are evolving from a musical genre created and performed only by Koreans into K-pop, a global musical genre produced and enjoyed by Koreans and those of other nationalities. This new development has revolutionized the perception of the popular music industry in Korea’s post-developmental society, as Korean children dream of becoming K-pop idols rather than entering traditionally esteemed careers in politics, medicin…
Modelling a Supplementary Vaccination Program of Rubella Using the 2012–2013 Epidemic Data in Japan
From 2012-2013, Japan experienced a major epidemic of rubella, involving a total of 12,614 rubella cases and 45 confirmed cases of congenital rubella syndrome (CRS). One of the contributory factors in this outbreak may have been that the majority of adult males remained unvaccinated. To plan for a supplementary immunization program (SIP) to elevate the herd immunity level, it is critical to determine the required amount of vaccine and identify th…
Assessment of Social Distancing for Controlling Covid-19 in Korea: An Age-Structured Modeling Approach
The outbreak of the novel coronavirus disease 2019 (COVID-19) occurred all over the world between 2019 and 2020. The first case of COVID-19 was reported in December 2019 in Wuhan, China. Since then, there have been more than 21 million incidences and 761 thousand casualties worldwide as of 16 August 2020. One of the epidemiological characteristics of COVID-19 is that its symptoms and fatality rates vary with the ages of the infected individuals. …
Effects of the Community Reinvestment Act on small business lending
This study examines the effectiveness of the Community Reinvestment Act (CRA) in facilitating small business lending to lower-income neighborhoods. Taking advantage of an exogenous policy shock that resulted in neighborhood-level changes in CRA eligibility, we identify changes in small business lending in tracts that became CRA eligible and CRA ineligible and compare these with control groups constructed in two ways. The results of our difference…
Bank adaptation to neighborhood change: Mortgage lending and the Community Reinvestment Act
This research explores whether banks strategically leverage regulatory rules for the Community Reinvestment Act that fix a neighborhood's eligibility status over a decade based on a neighborhood's economic trajectory over that decade. Using 2004–2011 Home Mortgage Disclosure Act (HMDA) data, we find that banks approve loans more frequently in those neighborhoods that are most rapidly improving, and that this effect is stronger if the neighborhood…
Are Millennials Coming to Town? Residential Location Choice of Young Adults
How widespread is the downtown resurgence among the current generation of young adults 25 to 34 years old, often referred to as the Millennials? Answering the question, this article provides a detailed analysis of the past, current, and future geographic population distribution, focusing on the young adults. It first documents the demographic shifts from 1990 to 2015 by distance from the central business districts (CBDs) of the 50 largest U.S. me…
Subcritical Transmission in the Early Stage of Covid-19 in Korea
While the coronavirus disease 2019 (COVID-19) outbreak has been ongoing in Korea since January 2020, there were limited transmissions during the early stages of the outbreak. In the present study, we aimed to provide a statistical characterization of COVID-19 transmissions that led to this small outbreak. We collated the individual data of the first 28 confirmed cases reported from 20 January to 10 February 2020. We estimated key epidemiological …
Analysis of Superspreading Potential from Transmission Clusters of Covid-19 in South Korea
The COVID-19 pandemic has been spreading worldwide with more than 246 million confirmed cases and 5 million deaths across more than 200 countries as of October 2021. There have been multiple disease clusters, and transmission in South Korea continues. We aim to analyze COVID-19 clusters in Seoul from 4 March to 4 December 2020. A branching process model is employed to investigate the strength and heterogeneity of cluster-induced transmissions. We…
Public responses to Covid‐19 case disclosure and their spatial implications
We study how the public changes their mobility and retail spending patterns as precautionary responses to the disclosed location of COVID‐19 cases. To look into the underlying mechanisms, we investigate how such change varies spatially and whether there is any spatial spillover or substitution. We use the daily data of cell phone‐based mobility and credit card transactions between February 10 and May 31 in both 2019 and 2020 in Seoul, South Korea…
Detection of Covid-19 epidemic outbreak using machine learning
Background: The coronavirus disease (COVID-19) pandemic has spread rapidly across the world, creating an urgent need for predictive models that can help healthcare providers prepare and respond to outbreaks more quickly and effectively, and ultimately improve patient care. Early detection and warning systems are crucial for preventing and controlling epidemic spread. Objective: In this study, we aimed to propose a machine learning-based method to…
Improved time-varying reproduction numbers using the generation interval for Covid-19
Estimating key epidemiological parameters, such as incubation period, serial interval (SI), generation interval (GI) and latent period, is essential to quantify the transmissibility and effects of various interventions of COVID-19. These key parameters play a critical role in quantifying the basic reproduction number. With the hard work of epidemiological investigators in South Korea, estimating these key parameters has become possible based on i…
The Geography of Gentrification and Residential Mobility
Gentrification research often starts with the hypothesis that gentrification causes displacement of a neighborhood’s original residents, particularly low-income and vulnerable residents. Recent research based on large-scale quantitative data suggests that the displacement effects of gentrification for low-income residents evident from case studies and qualitative data are modest at the macroscale. We use geocoded microdata from the American Commu…
Can U.S. planned communities become diverse? The case of industry-leading master-planned communities in five metro areas
The history of master-planned community (MPC) development is inseparable from the history of race- and class-based discrimination and segregation in the United States. This paper investigates the place of exclusion and inclusion in planned community development practice. We undertook qualitative and quantitative analyses of the MPC development practice from the 1990s to the present. Through archival analysis and interviews, we demonstrate that, b…
Uncovering Covid-19 transmission tree: Identifying traced and untraced infections in an infection network
Introduction: This paper presents a comprehensive analysis of COVID-19 transmission dynamics using an infection network derived from epidemiological data in South Korea, covering the period from January 3, 2020, to July 11, 2021. The network illustrates infector-infectee relationships and provides invaluable insights for managing and mitigating the spread of the disease. However, significant missing data hinder conventional analysis of such netwo…
Analysis of the impact of Covid-19 variants and vaccination on the time-varying reproduction number: Statistical methods
Introduction: The COVID-19 pandemic has profoundly impacted global health systems, requiring the monitoring of infection waves and strategies to control transmission. Estimating the time-varying reproduction number is crucial for understanding the epidemic and guiding interventions. Methods: Probability distributions of serial interval are estimated for Pre-Delta and Delta periods. We conducted a comparative analysis of time-varying reproduction …
Data-driven analysis of the effect of screening and treatment on the spread of HIV in developing and developed countries
Introduction: In this study, we used a mathematical epidemic model to explore the status of the HIV epidemic in the USA and Pakistan. In addition to studying the dynamics of the model, we fitted the model with recent data to estimate the parameters describing the epidemic in both countries. Results: Our estimation shows that in the USA, the reproduction number is 0.9688 (0.9684, 0.9694); if the reproduction number is maintained at this level, it …
Back to the suburbs? Millennial residential locations from the Great Recession to the pandemic
In the past decade, there has been a great deal of attention paid to and speculation about the residential mobility and location decisions of millennials. Academics and practitioners alike have been trying to determine where millennials are moving and why, including whether they are leading a ‘back to the city’ movement or whether they are moving to the suburbs as previous generations did at their age. Using US Census data, this article examines …
Misalignment of Housing Growth and Population Trends: Cohort Size and Lagging Measurements Through Recession and Recovery
Population and housing growth are closely linked in the U.S. Census, less so in analysis. Overlooked changes in cohort size and lagged measurements have misled about current housing preferences, and quantity of housing needed, with mistiming producing great volatility. Drawing on decennial census data and American Community Surveys, we develop a cohort-based housing lifecycle model measuring active household formation of renters and owners in int…
Disparities in Residential Mobility Outcomes Among Older Adults in the United States
The older population in the United States is growing rapidly, yet their residential mobility patterns are understudied. Using the confidential version of the American Community Survey, this study examines variations in residential mobility outcomes across population subgroups, focusing on racial/ethnic and educational groups. Findings reveal disparities among older adult households: households of color and less-educated households often relocate …
Upzoning and gentrification: Heterogeneous impacts of neighbourhood-level upzoning in New York City
In light of the calls to relax restrictive density regulations, this paper examines how increasing residential development capacity, i.e. upzoning, may change the demographic, socio-economic and housing characteristics of the affected neighbourhoods. We examine the neighbourhood-level upzonings of New York City to answer this question. We find that upzoning is positively associated with signs of gentrification – upzoned neighbourhoods became whit…
Demography (12 works) · Medicine (12 works) · COVID-19 epidemiological studies (10 works) · Economics (10 works) · Population (10 works) · Geography (9 works) · Demography (8 works) · Sociology (8 works) · Urban, Neighborhood, and Segregation Studies (8 works) · Biology (7 works)