-In models of cortex, the spread of actwtty along prevlously strengthened synapses durmg synapttc modtficatton can result m an exponenttal growth of a large number of synaptlc connecttons, here termed runaway synaptlc modtficatton Analysts of thts phenomenon may provide a theoretwal framework for descrlbmg the mtttatwn and progresswn of the cortwal neuronal degeneration found m Alzhetmer's dtse...

| Conventional detection and demodulation rules are not ideally suited for use with discrete Fourier transform (DFT) based narrow-band interference suppression, if the DFT incorporates time-weighting to localize the interference spectrally. Detection rules which are adapted to the time-weighting are introduced here and shown to ooer signiicant improvements in performance, but their implementati...

BACKGROUND Public access defibrillators (PADs) are now available for more efficient and rapid treatment of out-of-hospital sudden cardiac arrest. PADs are used normally by untrained people on the streets and in sports centers, airports, and other public areas. Therefore, automated detection of ventricular fibrillation, or its exclusion, is of high importance. A special case exists at railway st...

This study asks whether phonological form affects adult second language learners’ ability to learn the meanings of novel words. Specifically, we ask whether hard-to-pronounce words, defined as having phones/phone combinations not present in the learner’s native language, are more difficult to learn meanings for, and further, if learnability differences are due to interference from production pr...

A comparison of weighted and non-weighted transform domain processing systems for narrowband interference excision. Adaptive narrowband interference rejection in a ds spread spectrum intercept receiver using transform domain signal processing techniques. IEEE Transactions on Communications , 37, 1989. 4] John Guilford and P. Das. The use of the adaptive lattice lter for narrowband jammer reject...

A multiple-symbol differential detector is formulated for -ary differential phase-shift keying modulation where the channel state information is unknown to the receiver. The maximum-likelihood decision statistic is derived for the detector, and its performance is demonstrated by analysis and simulation. Under the Gaussian assumption for the aggregate interference plus noise, an exact expression...

Radio Frequency (RF) interference is inherent in all wireless systems and is one of the most significant design parameters of cellular and other mobile systems. In this paper, it is shown that how a non-linear adaptive Volterra filter (Polynomial filter where input and output signals are related through Volterra series) helps track the statistics of the input data and dynamics of a direct seque...

Large regions of a Synthetic Aperture Radar (SAR) image can potentially be destroyed by an airborne broadband jammer. Jammer components include both the direct-path and multipath reflections from the ground, known as hot-clutter (HC) or terrain scattered interference. Using multiple antennas on a SAR provides spatial degrees of freedom and allows for beamforming to reject the direct-path signal...

Multiple Input Multiple Output (MIMO) communication technology has received recently significant attention triggered by the rapid development of Orthogonal Frequency Division Multiplexing (OFDM) broad-band wireless and high speed wireline communication systems. Such systems are very sensitive to Narrowband Interferences (NBI) due to their relatively low transmission power. This type of signal i...