The invention relates to a method for braking a rotor of a turbine engine, comprising a turning gear, with a drive supplied from an energy source, having an input shaft to which the rotor may be coupled, whereby, during a cooling phase for the turbine, the rotor may be driven by the drive using the coupled input shaft. This embodiment features discovering components in the IT system, determining at least one dependency between two or more of the discovered components, and tracking changes to the discovered components and the dependency between two or more of the discovered components. The present invention also provides a system and an apparatus for heterogeneous addressing mapping. A first gate controls the first and second regions and a second gate controls the second and third regions. The polyimide precursor having a structure represented by the following formula :. The invention is directed to methods for assaying for transglycosylase activity, methods of identifying inhibitors of transglycosylase activity, inhibitors identified by such methods, and methods of identifying the stage of inhibition at which such inhibitors act.