The authors jointly published extensively in the field of structural engineering, steel and composite structures, glass structures and nonlinear analysis and structural design. They also applied their developed software NIDA containing the new design method with specially formulated element allowing direct modelling of imperfection to design of numerous iconic as well as conventional steel and composite structures, including the MGM spectaucular roof in Macau which was awarded the longest single layer dome in world by Guinness record. The speaker is a Registered Professional Engineer in Hong Kong and a Chartered Structural Engineer in UK and won awards in research and practice by professional institution for his contribution to practice and science in structural engineering.