Jingchuan Wu is a Postdoctoral Research Scholar in the Department of Curriculum and Instruction at the University of Arkansas. His work aims to improve how digital health interventions are implemented and sustained to promote physical activity at the population level. Methodologically, he studies engagement, self-monitoring, and adaptive intervention design using intensive longitudinal data and ecological momentary assessment. He applies optimization frameworks such as the Multiphase Optimization Strategy (MOST) and Sequential, Multiple Assignment Randomized Trials (SMART) to understand which digital components work best, for whom, and under what conditions. By pairing design and analytic approaches, his research seeks to strengthen how interventions are designed, delivered, and maintained in real-world settings. As a 2026 MAPCI Fellow, Wu contributes to a community advancing methods for rigorous intervention development and evaluation in cancer prevention and control.