In measles, an external forcing (alternation of holidays and school terms) stimulates an intrinsic oscillatory behaviour of the host-parasite system caused by its short duration of infection and long-lasting host immunity [e.g. [ 16, 17]].
But in Mr. Bell's work, these alternations look forced rather than inventive.
The driving force for alternation is the electropositive nature of the maleic anhydride monomer complemented by the electronegative character of the styrene monomer.
Training on the forced-choice alternation rule commenced after the last day of habituation.
Forced-place alternation in a T-maze (Experiment 6) is learnt extremely rapidly and normal rats often perform close to ceiling levels, yet it is highly sensitive to fornix lesions [8,12,41,53,84,87].
For the remaining standard alternation trials the rat was forced to go East in the sample run, and rewarded for going West on the choice run.
For half of the standard alternation trials the rat was forced to the West in the sample run, and rewarded for going into the east arm on the choice run.
However, if a field of alternating electric force is applied with a frequency of alternation so high that the electrons are made to reverse their paths before they encounter the boundaries of the cluster, then the equivalent of conduction will take place.
However, it is believed that the alternation of pluvial cycles was the driving force in diversification of large herbivores in late Pleistocene.
Furthermore the opposing forces that are manifestations of fire form unities of cyclical alternation—"day night, winter summer, war peace, satiety hunger unity"(Fr. 204)—that proceed within the limits of a quantitative measure (metron) reinforced by a "law" of nature (Fr. 226).
This becomes most evident in the alternation of thick interstadial highstand (HST) wedges and thinner glacial forced-regression (FSST) units mirroring seaward shifts in coastal progradation.
