Lyme-meningitt hos barn

a case of lyme disease (lyme borreliosis)

while an important infectious disease in the united states and eurasia, lyme disease is rare in iran. we present a 9-year old boy admitted in children’s medical center in december 2001 with final diagnosis of lyme disease. on admission he showed arthritis and a history of previous skin lesions. serologic examination including enzyme–linked immunosorbent assay and western blot was positive for l...

Sjukdomar och dödsorsaker hos kameldjur i Sverige

Hos-based Variable Step Volterra Filter

In this paper, we are to develop a second-order LMS-type Volterra filter to reduce distortions of data transmission over analog telephone channels due the channel impulse response and inter-symbol interference (ISI). A novel approach for updating the linear and quadratic coefficients vectors of a second-order Volterra filter is presented. The innovative features of this algorithm provide distin...

Adaptive filtering using Higher Order Statistics (HOS)

The performed job, in this study, consists in studying adaptive filters and higher order statistics (HOS) to ameliorate their performances, by extension of linear case to non linear filters via Volterra series. This study is, principally, axed on:  Choice of the adaptation step and convergence conditions.  Convergence rate.  Adaptive variation of the convergence factor, according to the inpu...

HOS−BASED MULTI−COMPONENT FREQUENCY ESTIMATION (TueAmPO2)

We are considering a problem of carrier frequencies recovery for the linear mixtures of two BPSK signals in Gaussian noise. The goal is to simplify further signal analysis: signal separation, modulation identification and parameters estimation. The presented method is based on multidimensional (time−frequency−phase) representation of the Higher Order Statistics (HOS) of the received signal dist...