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Periodical time variance of power system is the observable, but no easy to investigate power system property. The theory of time varying systems allows for mathematical description of time varying structures, their modeling and analysis. There are however problems with experimental identification of such time dependent systems. Periodical time variance simplifies significantly the identification task...
The main purpose of the paper is to present the www hydrocarbon pollution monitoring system which is under development at the Warsaw University of Technology (WUT). The dedicated system server collects data from mobile GSM/GPRS accessed observation points, and delivers information on potential pollution to the authorized www clients. The emergency alarm information is planned to be send directly to...
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