Cyclic signal processing refers to situations where all the time indices are interpreted modulo some integer L. Since the frequency domain is a uniform discrete grid, there is more freedom in theoretical and design aspects. The basics of cyclic(L) multirate systems and filter banks have already appeared in the literature, and important differences between the cyclic and noncyclic cases are know...

[l] R. E. Kalman, “A new approach to linear filtering and prediction problems,” J. Basic Eng., Tram. ASME, pp. 35-45, Mar. 1960. [2] C. K. Chui and G. Chen, Kalrnun Filtering with Real-Time Applications. New York: Springer-Verlag. 1987. [3] L. Ljung, “Asymptotic behavior of the extended Kalman filter as a parameter estimator for linear systems,” IEEE Trans. Automat. Conrr., vol. 24, no. 1. pp. ...

We consider the output feedback event-triggered control of an off-grid voltage source inverter (VSI) with unknown L ́ C filter dynamics and connected load in the presence of an input disturbance acting at the plant. Due to uncertain dynamics and unmodelled parameters in the L ́ C filter connected to the VSI, we use an adaptive observer to reconstruct the system’s states. The control mechanism is...

DETERMINATION OF Cd AND Pb IN FUEL ETHANOL BY FILTER FURNACE ELECTROTHERMAL ATOMIC ABSORPTION SPECTROMETRY. A method was developed for quantification of Cd and Pb in ethanol fuel by filter furnace atomic absorption spectrometry. Filter furnace was used to eliminate the need for chemical modification, to stabilize volatile analytes and to allow the application of short pyrolysis step. The determ...

In order to improve the detection accuracy of wavelength, the filtering and curve fitting technologies were applied in the FBG wavelength demodulation system based on tunable F-P filter. These methods could realize the accurate peak-location of output signals of the photo detector. According to the characteristics of noise, the FIR low-pass filter was designed to filter the obtained light power...

Removal of benzene, toluene, and xylenes (BTX) from waste gases was studied in a 50-L laboratory-scale biofilter (25.2 cm I.D. and 100 cm H). A commercial blend of composted chicken manure and peat moss was used as the filter bed. The composted organic material was selected due to its relatively high microbial diversity and for its nutritive value (i.e. presence of N-sources and essential miner...

In this paper we obtain a new parameterization of all FIR paraunitary two-channel filter banks. Unlike other approaches which make use of a lattice structure or a cascade algorithm, we show that our technique provides a direct explicit expression of all FIR orthogonal filters, with no need of iteration procedures. Thus, in order to design a L-tap 2-channel paraunitary filterbank, it suffices to...

In this study a fully polarimetric electromagnetic model for sea surface Mueller matrix is exploited, under low to moderate wind conditions, to design and experiment a Synthetic Aperture Radar (SAR) oil slick filter. The latter is simple and computer time effective. Experiments, accomplished over C-band Multi Look Complex (MLC) SIR-C/X-SAR data and L-band Single Look Complex (SLC) ALOS PalSAR d...

A method for the preconcentration and determination of Cr(III), Co(II), Cu(II), Fe(III) and Pb(II) ions by atomic absorption spectrometry has been described. The method was based the collection of metal-calmagite complexes on a soluble cellulose nitrate membrane filter. The detection of the solution was obtained by flame atomic absorption spectrometry (FAAS) after completely dissolving the memb...

Legionella pneumophila is a ubiquitous microorganism widely distributed in aquatic environments and can cause Legionellosis in humans. A promising approach to detect viable cells in water samples involves the use of quantitative polymerase chain reaction (qPCR) in combination with photoactivatable DNA intercalator propidium monoazide (PMA). However, the PMA efficiency could be different dependi...