Decoded image converting circuitry includes a display image compression circuit to which image data are input in the form of consecutive macroblocks. Thus we describe identifying processes with shared memory access, such as threads or multicore processes, by arranging process memory ownership to deliberate provoke memory page faults to identify and handle concurrent memory access by multiple threads in such a manner as to enable deterministic replay, and hence backwards debugging. In some implementations, the system may detect rail vehicle events based on pre-determined rail vehicle event criteria sets. Still further provided by the invention are methods for producing cotton plants by crossing the cotton variety DP 161 B2RF with itself or another cotton variety and plants produced by such methods. The received digital message is decoded in a decoder and a speech synthesizer converts the decoded message into spoken words that are annunciated on a speaker.