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Nyquist sinc-pulse shaping provides spectral efficiencies close to the theoretical limit. In this paper we discuss the analogy to optical orthogonal frequency division multiplexing and compare both techniques with respect to spectral efficiency and peak to average power ratio. We then show that using appropriate algorithms, Nyquist pulse shaped modulation(More)
PURPOSE To determine the effect of perfluorocarbon liquid (PFCL)-induced abolition of potassium siphoning by the vitreal end feet of Miller cells. METHODS Porcine eyecups were filled with stained balanced salt solution and PFCLs (perfluorodecalin, perfluorooctane, perfluoroperhydrophenanthrene or the semifluorocarbon perfluorohexylhexane). With optical(More)
OBJECTIVE The presence of disabilities in addition to deafness poses unique challenges for evaluating outcomes in young children who receive cochlear implants. We describe two cases in which measures of joint attention and symbolic play contributed to our understanding of progress in language acquisition following implantation for children with additional(More)
A practical scheme to perform the fast Fourier transform in the optical domain is introduced. Optical real-time FFT signal processing is performed at speeds far beyond the limits of electronic digital processing, and with negligible energy consumption. To illustrate the power of the method we demonstrate an optical 400 Gbit/s OFDM receiver. It performs an(More)
The plasma protein binding of phenytoin was studied in 40 adult patients with varying degrees of renal function impairment. The patients had stable renal function and no other condition known to alter phenytoin binding. Binding was measured by equilibrium dialysis, and the apparent affinity constant was calculated using the binding data and the measured(More)
Using electronic equalization to combat chromatic dispersion and forward error correction (FEC) to increase robustness to in-band crosstalk, we demonstrate CWDM capacities of 32x10 Gb/s (2x16, fullduplex) over >30 km of low-water-peak standard single-mode fiber. 1. Introduction Coarse wavelength division multiplexed (CWDM) systems are becoming increasingly(More)
This paper presents the possibility to measure the blood sugar content detecting different ultrasonic velocities in water-glucose mixtures by using two ultrasonic transducers. With the transmission-trough technique and a fixed transducer distance the required wave propagation time can be measured precisely. The ultrasonic actor transducer, excited at the(More)
Litigation in Mississippi required the Department of Corrections to ameliorate substandard conditions at the supermaximum Unit 32 of Mississippi State Penitentiary at Parchman, remove prisoners with serious mental illness from administrative segregation and provide them with adequate treatment, and reexamine the entire classification system. Pursuant to two(More)
In the classical neural-gas method, the neurons are located in the input space according to the input density. But if we want to use this kind of approach as a function approximator, it can be interesting to change the spatial distribution of the neurons, so that they concentrate in regions where the unknown function appeared to be more complex. To achieve(More)
OBJECTIVE To determine the safety and feasibility of the auditory brainstem implant (ABI) in congenitally deaf children with cochlear aplasia and/or cochlear nerve deficiency. STUDY DESIGN Phase I feasibility clinical trial of surgery in 10 children, ages 2 to 5 years, over a 3-year period. SETTING Tertiary children's hospital and university-based(More)