Kyusik Kim
Biographic Data
| ID | 3635585 |
|---|---|
| NAME | Kyusik Kim |
| GIVEN NAMES | Kyusik |
| FAMILY NAME | Kim |
| SIGNATURE | KIM K |
| AFFILIATIONS | Florida State University |
| ORCID | 0000-0003-3753-3196 |
| VERIFIED | Yes |
| TOTAL WORKS | 13 |
| TOTAL CITATIONS | 16 |
| AUTHOR COUNT | 13 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2020 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 2 |
Incorporating Eligibility Constraints in Spatial Accessibility Modeling and Introducing Enhanced Rational Agent Access Model
This study incorporates eligibility constraints (EC) as a unified framework that integrates legal, institutional, and economic barriers into spatial accessibility modeling, describing how these constraints shape real-world access. Building on this foundation, the study develops the enhanced rational agent access model (eRAAM), an extension of the rational agent access model (RAAM) proposed by Saxon and Snow (Citation2020). eRAAM integrates EC wit…
Decomposing Spatial Accessibility into Demand, Supply, and Traffic Speed: Averaging Chain Substitution Method
Spatial accessibility to healthcare services is commonly determined by three core components: demand, supply, and traffic speed. Although understanding which factors contribute to accessibility changes can help prioritize interventions to enhance accessibility in underserved areas, limited research has examined the extent of their individual contributions. To better capture the local dynamics that shape healthcare accessibility, this study decomp…
Introducing rational agent access model to enhance scene-to-hospital accessibility of emergency medical services
Spnaf: An R package for analyzing and mapping the hotspots of flow datasets
This paper introduces {spnaf} (spatial network autocorrelation for flows), an R package designed for the hotspot analysis of flow (e.g., human mobility, transportation, and animal movement) datasets based on Berglund and Karlström’s G index. We demonstrate the utility of the {spnaf} package through two example analyses by data forms: 1) bike-sharing trip patterns in Columbus, Ohio, USA, using polygon data, and 2) U.S. airports’ passenger travel p…
Understanding inequalities in geographic accessibility to emergency cyclone shelters in Bangladesh under climate change
This research aims to explore inequalities in geographic accessibility to emergency cyclone shelters in Bangladesh, a country in the Global South that is prone to natural disasters. We begin by quantifying the walking time to the nearest cyclone shelters as a basic measure of accessibility. Additionally, we compute a more practical measure of accessibility by considering crowding effects in shelters due to the interactions between supply (e.g., s…
Integrating People in Place-Based Accessibility Measures: Design and Application of a Mode Choice Accessibility Model
Conventional place-based accessibility is a useful indicator that quantifies the range of benefits available to a location and its residents. It is insufficient, however, for reflecting individual socioeconomic characteristics and the built environment in accessibility scores, as it assumes all individuals have the same level of accessibility within a given location. To address this limitation, this article introduces a novel place-based accessib…
Understanding Changes in Spatial Accessibility to Restaurants During the Covid ‐19 Pandemic: Disentangling Closures, Inequity, Neighborhood, and Transportation Mode
Among one of the more significant societal impacts of the COVID‐19 pandemic, restrictions on people's movement accelerated, and in some cases outright caused, restaurant closures. By considering people's potential for both driving and walking to restaurants, this study aims to examine how restaurant closures are associated with neighborhood characteristics during the pandemic. To do so, we investigated changes in spatial accessibility to restaura…
Large-scale modeling of hurricane flooding and disrupted infrastructure impacts on accessibility to critical facilities
Evaluating the impacts of supply-demand dynamics and distance decay effects on public transit project assessment: A study of healthcare accessibility and inequalities
Transportation system performance capabilities for vulnerable populations
A critical component of transportation systems' resilience is their capability of withstanding disruptions and adapting to changing conditions to safely meet the demands of the users pre-, peri-, and post-disasters. Historically, disruptions from natural hazards are more consequential, with more negative disproportionate impacts on older adults, ethnic minority groups, rural, and disabled populations. Incorporating special users' needs as a core …
Covid-19 Vaccine Rollout Plans Should Consider Spatial Distribution of Age-Specific Population
In the early phases of COVID-19 vaccine distribution, most countries adopted age-based rollout plans due to vaccine shortages. The plans, however, might overlook different spatial distributions of each age group. In this study, we first examine separate spatial accessibility to vaccine sites varying by different age groups, transportation modes, and times to find differences in spatial patterns of accessibility scores based on the enhanced two-st…
A Comparative Assessment of Cooling Center Preparedness across Twenty-Five U.S. Cities
Cooling centers have played a significant role in reducing the risks of adverse health impacts of extreme heat exposure. However, there have been no comparative studies investigating cooling center preparedness in terms of population coverage, location efficiency, and population coverage disparities among different subpopulation groups. Using a catchment area method with a 0.8 km walking distance, we compared three aspects of cooling center prepa…
Examining the impacts of the Great Recession on the commuting dynamics and jobs-housing balance of public and private sector workers
Examining the impacts of the Great Recession on the commuting dynamics and jobs-housing balance of public and private sector workers
Evaluating the impacts of supply-demand dynamics and distance decay effects on public transit project assessment: A study of healthcare accessibility and inequalities
Understanding inequalities in geographic accessibility to emergency cyclone shelters in Bangladesh under climate change
This research aims to explore inequalities in geographic accessibility to emergency cyclone shelters in Bangladesh, a country in the Global South that is prone to natural disasters. We begin by quantifying the walking time to the nearest cyclone shelters as a basic measure of accessibility. Additionally, we compute a more practical measure of accessibility by considering crowding effects in shelters due to the interactions between supply (e.g., s…
Large-scale modeling of hurricane flooding and disrupted infrastructure impacts on accessibility to critical facilities
Examining the impacts of the Great Recession on the commuting dynamics and jobs-housing balance of public and private sector workers
A Comparative Assessment of Cooling Center Preparedness across Twenty-Five U.S. Cities
Cooling centers have played a significant role in reducing the risks of adverse health impacts of extreme heat exposure. However, there have been no comparative studies investigating cooling center preparedness in terms of population coverage, location efficiency, and population coverage disparities among different subpopulation groups. Using a catchment area method with a 0.8 km walking distance, we compared three aspects of cooling center prepa…
Transportation system performance capabilities for vulnerable populations
A critical component of transportation systems' resilience is their capability of withstanding disruptions and adapting to changing conditions to safely meet the demands of the users pre-, peri-, and post-disasters. Historically, disruptions from natural hazards are more consequential, with more negative disproportionate impacts on older adults, ethnic minority groups, rural, and disabled populations. Incorporating special users' needs as a core …
Covid-19 Vaccine Rollout Plans Should Consider Spatial Distribution of Age-Specific Population
In the early phases of COVID-19 vaccine distribution, most countries adopted age-based rollout plans due to vaccine shortages. The plans, however, might overlook different spatial distributions of each age group. In this study, we first examine separate spatial accessibility to vaccine sites varying by different age groups, transportation modes, and times to find differences in spatial patterns of accessibility scores based on the enhanced two-st…
Understanding Changes in Spatial Accessibility to Restaurants During the Covid ‐19 Pandemic: Disentangling Closures, Inequity, Neighborhood, and Transportation Mode
Among one of the more significant societal impacts of the COVID‐19 pandemic, restrictions on people's movement accelerated, and in some cases outright caused, restaurant closures. By considering people's potential for both driving and walking to restaurants, this study aims to examine how restaurant closures are associated with neighborhood characteristics during the pandemic. To do so, we investigated changes in spatial accessibility to restaura…
Large-scale modeling of hurricane flooding and disrupted infrastructure impacts on accessibility to critical facilities
Evaluating the impacts of supply-demand dynamics and distance decay effects on public transit project assessment: A study of healthcare accessibility and inequalities
Introducing rational agent access model to enhance scene-to-hospital accessibility of emergency medical services
Spnaf: An R package for analyzing and mapping the hotspots of flow datasets
This paper introduces {spnaf} (spatial network autocorrelation for flows), an R package designed for the hotspot analysis of flow (e.g., human mobility, transportation, and animal movement) datasets based on Berglund and Karlström’s G index. We demonstrate the utility of the {spnaf} package through two example analyses by data forms: 1) bike-sharing trip patterns in Columbus, Ohio, USA, using polygon data, and 2) U.S. airports’ passenger travel p…
Understanding inequalities in geographic accessibility to emergency cyclone shelters in Bangladesh under climate change
This research aims to explore inequalities in geographic accessibility to emergency cyclone shelters in Bangladesh, a country in the Global South that is prone to natural disasters. We begin by quantifying the walking time to the nearest cyclone shelters as a basic measure of accessibility. Additionally, we compute a more practical measure of accessibility by considering crowding effects in shelters due to the interactions between supply (e.g., s…
Integrating People in Place-Based Accessibility Measures: Design and Application of a Mode Choice Accessibility Model
Conventional place-based accessibility is a useful indicator that quantifies the range of benefits available to a location and its residents. It is insufficient, however, for reflecting individual socioeconomic characteristics and the built environment in accessibility scores, as it assumes all individuals have the same level of accessibility within a given location. To address this limitation, this article introduces a novel place-based accessib…
Incorporating Eligibility Constraints in Spatial Accessibility Modeling and Introducing Enhanced Rational Agent Access Model
This study incorporates eligibility constraints (EC) as a unified framework that integrates legal, institutional, and economic barriers into spatial accessibility modeling, describing how these constraints shape real-world access. Building on this foundation, the study develops the enhanced rational agent access model (eRAAM), an extension of the rational agent access model (RAAM) proposed by Saxon and Snow (Citation2020). eRAAM integrates EC wit…
Decomposing Spatial Accessibility into Demand, Supply, and Traffic Speed: Averaging Chain Substitution Method
Spatial accessibility to healthcare services is commonly determined by three core components: demand, supply, and traffic speed. Although understanding which factors contribute to accessibility changes can help prioritize interventions to enhance accessibility in underserved areas, limited research has examined the extent of their individual contributions. To better capture the local dynamics that shape healthcare accessibility, this study decomp…
Geography (9 works) · Urban Transport and Accessibility (9 works) · Medicine (5 works) · Business (4 works) · Computer Science (4 works) · Economics (4 works) · Engineering (4 works) · Sociology (4 works) · Transport engineering (4 works) · Economic growth (3 works)