He is LEED-accredited and certified by the National Council for Interior Design Qualification and has significant professional design experience in space planning, design and project management, which includes supervising design and installation of more than 500 franchised retail stores in Korea and China, a free standing museum, and several trade shows. His primary research is in developing a design assessment and application model describing human behavior within a built-in environment. He studies how built-in environments influence human experiences and how these relationships inform design decisions. Most recently, he is interested in investigating universal design issues of architectural environments from a diversity point of view. He tries to identify design issues that promote independency of both abled and disabled individuals.