He is one of the architects of the System Modeling Language (SysML) which extends the Unified Modeling Language (UML) from software to systems of all kinds. At both INCOSE and the Object Management Group (OMG), he helped drive the development of SysML to enable adoption of Model-Based Systems Engineering (MBSE). At OMG he has served as co-chair of the SysML Revision Task Force and the Systems Engineering Special Interest Group. At INCOSE, he is active in the MBSE Initiative and the Systems Modeling and Simulation Working Group (SMSWG). Roger assumed the role of SMSWG Chairman in July 2016. Roger's research work seeks to expand the use of computer-based models to collaborate across diverse business and technical concerns.