– In this work we deal with the coefficients of () 2 it A e , where A is in a class of polynomials having Unimodular coefficients. We first present a technique that calculates lower bounds for particular autocorrelations and then in a more general case we present an upper bound for their maximal order.
From the early 1950s, estimating the autocorrelations of polynomials with coefficients on the unit circle has found applications in Ising spin systems and in surface acoustic wave designs. In this paper, a technique is introduced that not only estimates the autocorrelations, but for some special types of such polynomials, it locates the frequencies at which… (More)
During ESCOMPTE precampaign (15 June to 10 July 2000), three days of intensive pollution (IOP0) have been observed and simulated. The comprehensive RAMS model, version 4.3, coupled online with a chemical module including 29 species, has been used to follow the chemistry of the zone polluted over southern France. This on-5 line method can be used because the… (More)