<P> N (t)--N (t − 1) = (p + qN (t − 1) / m) x (m--N (t − 1)) </P> <Ul> <Li> N (t) = the number of adopters in the current time period, (t) </Li> <Li> N (t − 1) = the number of adopters in the previous time period, (t - 1) </Li> <Li> p = the coefficient of innovation </Li> <Li> q = the coefficient of imitation (the social contagion influence) </Li> <Li> m = an estimate of the number of eventual adopters </Li> </Ul> <Li> N (t) = the number of adopters in the current time period, (t) </Li> <Li> N (t − 1) = the number of adopters in the previous time period, (t - 1) </Li>

Market special area of demand for product or service