1. Teaching Fellow, Division of Environmental and Water Resources Engineering, School of Civil and Environmental Engineering, Nanyang Technological Univ., 50 Nanyang Ave., Singapore 639798; formerly, Researcher, Institut für Bauinformatik, BTU Cottbus, Universitätsplatz 3-4, 03044 Cottbus, Germany.
2. Professor, Institut für Bauinformatik, BTU Cottbus, Universitätsplatz 3-4, 03044 Cottbus, Germany.