On the reaction time of some synchronous systems
  This paper presents an investigation of the notion of reaction time in some synchronous systems. A state-based description of such systems is given, and the reaction time of such systems under some classic composition primitives is studied. Reaction time is shown to be non-compositional in general. Possible solutions are proposed, and applications to verification are discussed. This framework is illustrated by some examples issued from studies on real-time embedded systems. 
Ilias Garnier (CEA LIST), Christophe Aussagu\`es (CEA LIST), Vincent   David (CEA LIST), Guy Vidal-Naquet (SUPELEC Systems S...
cs.SE