Independent component analysis (ICA) is a class of algorithms widely applied to separate sources in EEG data. Most ICA approaches use optimization criteria derived from temporal statistical independence and are invariant with respect to the actual ordering of individual observations. We propose a method of mapping real signals into a complex vector space that takes into account the temporal ord...

Removing noise from piecewise constant (PWC) signals is a challenging signal processing problem arising in many practical contexts. For example, in exploration geosciences, noisy drill hole records need to be separated into stratigraphic zones, and in biophysics, jumps between molecular dwell states have to be extracted from noisy fluorescence microscopy signals. Many PWC denoising methods exis...

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The relative importance of north-south migrations of the intertropical convergence zone (ITCZ) versus El Niño-Southern Oscillation and its associated Pacific Walker Circulation (PWC) variability for past hydrological change in the western tropical Pacific is unclear. Here we show that north-south ITCZ migration was not the only mechanism of tropical Pacific hydrologic variability during the las...

The purpose of this investigation was to determine the effect of creatine (Cr) loading on the onset of neuromuscular fatigue by monitoring electromyographic fatigue curves from the vastus lateralis muscle using the physical working capacity at the fatigue threshold (PWC(FT)) test. Using a double-blind random design, 15 women athletes [mean age 19.0 +/- 2.0 (SD) yr] from the university crew team...

Despite of 'dot.com and high technologies crisises, online advertising continues to grow by steady rates. So, according to The Interactive Advertising Bureau (IAB) and PricewaterhouseCoopers (PwC) [1] the online ad spending grows over 20% in 2003. The IAB and PwC officially reported that online ad revenues in the US grew by 38% in Q4 of last year totaling $2.2 billion. Online ad revenues for th...

This paper presents an empirical comparison of different modulation schemes in still and turbulent water conditions. Using underwater channel emulator, it is shown that pulse position (PPM) subcarrier intensity (SIM) have inherent resilience to turbulence induced fading with SIM achieving higher data rates under all Finally, the signal processing technique termed pair-wise coding (PWC) applied ...