We study how the concept of bounded synchronization delay is related to retrograde comma-free codes. Retrograde codes are a subclass of comma-free codes in which the dictionary of code words excludes not only overlaps of code words but also reversals of overlaps. We give a general upper bound on the maximum size of a retrograde comma-free distionary, provide a construction for a bounded synchro...

most accidents happens because of lack of visibility and not driver’s reaction on time whenan accident occurs. increasing required time for driver’s reaction caused to decreasingaccidents on roadways .intelligent vehicle networks brings enough time for reaction by sendingalert and alternate messages to vehicles on roadway. main propose in this paper is aroundmodulation on reception interval saf...

Conceptual problems of unified two-nucleon force models are discussed. The force models are based on the pion-nucleon vertex and attempt a description of the nucleon-nucleon interaction below and above pion threshold. The conceptual problems arise from the nucleon renormalization due to pionic degress of freedom. Keeping channels with a single pion only no renormalization procedure can be given...