His research interests include the use of formal models for architecture description to build real-time embedded systems. Joel Champeau is a teacher-researcher in the New Technologies Development Laboratory at ENSIETA, Brest, France. He specializes in applying MDE methodology and techniques to a system modeling framework for embedded systems. Sebastien Gerard is researcher at the LIST in the CEA (the French Atomic Energy Commission) in the LSP Group (Software for Process Safety) where he leads the research theme: Model-based software engineering for real-time embedded systems .