VPoster: SOC Poster Session 2 on Wednesday, July 19, 2023, 7:00 PM

Room: Virtual Room1

Thread: Diversity

Duration: 90 minutes

Chair: Christine Tang

System Dynamics Approach for Understanding Patient Outmigration in South Korea

Presenters: Moo Hyuk Lee, Young Kyung Do

Patient outmigration is an important issue of the South Korean health system. Patients living in provincial areas visit tertiary hospitals located in the capital city (Seoul), causing concentration of patients into a few large hospitals in Seoul and aggravating the disparity of healthcare quality between capital and provincial areas. We aim to develop a quantitative model using system dynamics in order to thoroughly understand the nonlinear dynamic mechanism driving outmigration. We present a causal loop of which the three main components include quality factors, trust (responsiveness), and healthcare providers’ preferences. Decrease in quality of the regional health system induces the increase in outmigration, which then results in quality deterioration through the other two components, thus forming a vicious cycle.

Formal-informal water supply dynamics under uncertainty

Presenter: Rakhshinda Bano

The rise of informal water supply systems has transformed urban water supply systems in developing countries into complex adaptive systems. Due to their financial limitations, formal water service providers have given way to informal water suppliers, which leads to feedback loops that worsen the sustainability problems of the formal supply system in the long run. These interactions are evaluated under the uncertainties of climate change and human behavior in the future. Understanding of informal water supply systems’ role in determining the sustainability of urban water supply systems in the future can be helpful in guiding policy.

Urban System Resilience to Flood Disasters using Spatial and Temporal Interactions in Cities: Case of Colombo, Sri Lanka

Presenter: Osada Peiris

Floods are considered a significant threat to the resilience of urban systems due to their intensity, frequency, and vulnerability driven by complex internal and external factors. Urban resilience is measured as the ability of cities to maintain their critical functions in the face of external shocks and stresses. This study considered cities as complex, adaptive, and emergent urban systems with evolving interactions among their sub-systems to stay in a dynamic equilibrium. Using Colombo, Sri Lanka, as the case study, this proposal uses interactions among physical features, natural elements, and human behavior at multiple spatial and temporal scales before, during, and after hazardous events. The system dynamics approach provides an alternative perspective for urban problems deviated from conventional open-ended, mitigation-oriented views to non-linear, interdependent, and adaptation directions. This enables planning decisions to holistically target the root cause of existing issues using resilience as the ultimate goal of a sustainable urban future.