J. Jay Liu is a full Professor in the Department of Chemical Engineering at Pukyong National University, Korea. After working in industry for two years, he entered McMaster University (Canada), where he attained a PhD in big data analytics and applied statistics in 2004. Since then, he has worked as a postdoctoral fellow in the McMaster Advanced Control Consortium at McMaster University, Canada, and a senior research engineer at Samsung Electronics, Korea, before moving back to academia in 2009. His research interests are currently in the design and analysis of energy systems based on green hydrogen.