of some concepts of short time Fourier transform (STFT) and wavelet transform. A scalable Gaussian window which provides time-frequency resolution is used to localize the spectrum of time-frequency series. Since hydrocarbon is detectable in low frequency...

We investigated on low-frequency passive seismic observations over a hydrocarbon reservoir, oil field, in SW of Iran recorded by a temporary network. Since the low frequency (1-6 Hz) seismic energy increases in hydrocarbon reservoirs and diminishes...

In this paper a method for designing coordinated power system stabilizer (PSS) using model reference adaptive control is presented. To this end, a model that is called single machine non-infinite bus is presented for studying low frequency...

was fabricated by deposition of WO3 nanoparticles between electrodes via low frequency AC electrophoretic deposition. Gas sensing measurements showed that this material has a high sensitivity to very low concentrations of NO2 at 250°C and 300°C...

on patterned alumina substrates through low frequency AC electrophoresis

of which, the deposition pattern was studied using optical microscopy and SEM. Exposure of the sensors

to NO2 in the temperature range of 150–300 ◦C resulted in highest...

improve the dynamic stability

of the power system and effectively suppress the low-frequency

oscillation....