Professor Kwan is a geographer who applies cutting-edge geographic information science and remote sensing methodologies to address pressing health, transport, environmental and social challenges in urban settings. Her pioneering work has led to the identification of two major conceptual breakthroughs: the Uncertain Geographic Context Problem and the Neighbourhood Effect Averaging Problem. They challenge traditional residence-based approaches to neighbourhood effect research and have driven a paradigm shift toward mobility-based environmental exposure assessment.

Professor Ng is at the forefront of epidemiology research on inflammatory bowel disease and the role of gut microbiota in health and disease. She has discovered novel gut microbial signatures and transformed such signatures into clinically applicable non-invasive tests for early diagnosis of colorectal cancer, inflammatory bowel disease and neurodevelopmental disorders in children.