(1) The activation of the pair-rule genes by the gap genes results in the transformation of the embryonic pattern along the antero-posterior axis from an aperiodic regionalization to a periodic one.(2) Although the tiling is mainly periodic, a few tiles have been placed differently from the others, wrecking the periodicity; the whole tiling is aperiodic .(3) Partial aperiodic reinforcement, for example, evokes a rather more persistent response than one might expect, though Skinner would scoff at interpreting such persistence as hope springing eternal.(4) With respect to the former, suggested population dynamics of cannibals include a variety of regimes such as equilibrium, periodic cycles, aperiodic cycles, and chaotic dynamics.(5) It was a very near facsimile of an aperiodic pattern he had created twenty years ago.(6) In describing this ‘Australasia’ as marked by an impoverished geology and the aperiodic occurrence of el ninos, Flannery tells a morality tale about what happens when life forms exceed the limits of their environment.(7) By extracting information from noisy, aperiodic and intermittent signals, wavelet transforms are making an impact in medicine, astronomy, imaging and beyond(8) In fact this article could be considered an analysis of the impact of the study of aperiodicity on Hubert's problem.(9) A new technique for aperiodicity analysis was designed to meet these more stringent requirements, but even highly sophisticated fundamental frequency analysis procedures 9,10 need further refinement.(10) This generalisation allows us to eliminate the bullwhip problem, but introduces stability and aperiodicity issues in the supply chain.(11) We prove that aperiodicity is present in both versions, and a strong convergence to a fixed point is added in the fuzzy case, which extends and complement Jen's result on aperiodicity of Boolean CA.(12) Aperiodic damping is obtained by means of an aluminium vane.(13) Thus, the aperiodicity was not due to synaptic events but attributable to the activity of voltage-sensitive Na + channels.