Professor Usama Hamed Issa works in the Civil Engineering Department, Minia University, Egypt, currently in Taif University, KSA. Usama undertakes research in risk management, construction decision-making, lean construction, and civil engineering. His current project is on modeling for quantifying risks in construction projects as well as evaluating lean implementation and causes of waste in construction projects. Previous studies and research were at the Institute for Technology and Management in Construction, Karlsruhe University, Karlsruhe, Germany, and the Civil and Environmental Engineering Department, Gunma University, Japan.