t\BSTRACT A cylindrical cellular discontinuity commonly occurs in lateral geniculate layers that are Innervated by the contralateral eye. Such a disconti ­ nuity has been found In a variety of mammalian species, including carnivores, primates, a rodent and a marsupial. Electrophyslological evidence obtained from some of these species shows ulat the discontinuity corresponds to the blind spot. I...

The unsteady Navier{Stokes equations ooer a large variety of instantaneous solutions even for rather simple boundary conditions once the relevant spatial and temporal scales of the problem at hand are adequately resolved. This is especially true for DNS (Direct Numerical Simulation) of laminar-turbulent transition, where an initially lam-inar ow, disturbed by some unsteady uctuations \breaks do...

The behavior of a generalized random environment integer-valued autoregressive model higher order with geometric marginal distribution and negative binomial thinning operator is dictated by realization {zn}?,n=1 an auxiliary Markov chain called process. Element zn represents state the in moment n ? N determines all parameters that moment. In to apply model, one first needs estimate {zn}?,n=1, w...

This article reviews the practical aspects of the use of ARIMA (autoregressive, integrated, moving average) modelling of time series as applied to the surveillance of reportable infectious diseases, with special reference to the widely available SSS1 package, produced by the Centers for Disease Control and Prevention. The main steps required by ARIMA modelling are the selection of the time seri...