Dr. Gülen (PhD 1992, Rensselaer Polytechnic Institute, Troy, New York), PE, ASME Fellow, Bechtel Fellow, has more than 25 years of mechanical engineering experience covering a wide spectrum of technology, system, and software design; development (GTPRO/MASTER, THERMOFLEX); performance and cost assessment; and analysis, primarily in the field of steam and gas turbine combined cycle (109FB-SS, IGCC 207FB, H-System) process and power plant turbomachinery and thermodynamics (in Thermoflow Inc., General Electric, and Bechtel). Dr. Gülen authored/co-authored three books, two book chapters, numerous internal/external archival papers, and articles (50-plus), design practices, technical assessment reports, and US patents (25-plus) on gas/steam turbine power plant performance, cost, optimization, data reconciliation, analysis, and modelling.