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In this paper we propose a fast brain computer interface speller based on electroencephalography (EEG). The slow performance of conventional BCI spellers is overcome by combining the fast motor evoked potentials (MEPs) with the accuracy of P300 event related potentials. The μ rhythms associated with motor imagery are extracted using morlet wavalet(More)
The purpose of the paper is to briefly review some of the methods used to obtain aerosol bipolar charge distribution and to describe a novel instrument developed at Brunel University. The bipolar charge aerosol classifier (BCAC) is an improved version of the authors' previously published bipolar charge measurement system (2001), eliminating some of his(More)
A review of the current protocols and techniques for the anthropometric measurements and postural assessment for wheelchair users and individuals with severe musculoskeletal problems was given. It was concluded that both contact and non contact methods have a number of significant limitations including time consuming measurement procedure, high cost and(More)
The measurement accuracy of the estimation of the Doppler frequency and the signal phase difference in Phase Doppler Anemometry (PDA) systems is investigated in this paper by taking into account the effect of the particle trajectory via the measurement volume and the different noise sources. Both the signal dependent (quantum shot) noise and the signal(More)
This paper describes an integrated signal processing system based on Quadrature Demodulation (QD) and correlation techniques to obtain particle size and charge simultaneously using phase Doppler anemometry (PDA). By solving the equation of particle motion in an AC electric field combined with the measurement of its size and velocity, the magnitude as well(More)
The proposed noninvasive method of measurement of the charge level on a population of particles employs the phase Doppler anemometry (PDA) technique in conjunction with a high-resolution computer controlled traversing system. The PDA system was used to track the motion of charged particles in the presence of a DC electric field. By solving the equation of a(More)
An array of microelectrodes was supplied with a dual-frequency electrical signal to create a non-uniform electric field that was used for a dielectrophoretic particle transport system. Dielectrophoretic force was used to convey sub-micron sized particles along the tips of electrodes. The particles were manipulated along an arrangement of fabricated(More)
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