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CreatorTitleDescriptionSubjectDate
226 Stevens, KennethCharacterization of asynchronous templates for integration into clocked CAD flowsAsynchronous circuit design can result in substantial benefits of reduced power, improved performance, and high modularity. However, asynchronous design styles are largely incompatible with clocked CAD, which has prevented wide-scale adoption. The key incompatibility is timing. Thus most commercial...2009
227 Myers, Chris J.Stochastic cycle period analysis in timed circuitsThis paper presents a technique to estimate the stochastic cycle period (SCP), a performance metric for timed asynchronous circuits. This technique uses timed stochastic Petri nets (TSPN) which support choice and arbitrary delay distributions. The SCP is the delay of the average path in a TSPN when ...1999
228 Stringfellow, Gerald B.Strain-enhanced doping in semiconductors: effects of dopant size and charge stateWhen a semiconductor host is doped by a foreign element, it is inevitable that a volume change will occur in the doped system. This volume change depends on both the size and charge state difference between the dopant and the host element. Unlike the ‘‘common expectation'' that if the host is de...2010-11
229 Myers, Chris J.Level oriented formal model for asynchronous circuit verification and its efficient analysis methodUsing a level-oriented model for verification of asynchronous circuits helps users to easily construct formal models with high readability or to naturally model datapath circuits. On the other hand, in order to use such a model on large circuits, techniques to avoid the state explosion problem must ...2002
230 Mathews, V. JohnAdaptive gain processing with offending frequency suppression for digital hearing aidsDigital hearing aids identify acoustic feedback signals and cancel them continuously in a closed loop with an adaptive filter. This scheme facilitates larger hearing aid gain and improves the output sound quality of hearing aids. However, the output sound quality deteriorates as the hearing aid gai...2012
231 Furse, Cynthia M.A stochastic FDTD method for statistically varying biological tissuesTHE analysis of radio wave absorption is a continuing concern for the cell phone industry due to health effects (and associated regulations) of the person using the cell phone [1,2]. The amount of allowable power absorbed has a strong impact on the design of the phone (antenna, electromagnetic inte...2011
232 Harrison, Reid R.Low-power FM transmitter for use in neural recording applicationsWe present a low power FM transmitter for use in neural recording telemetry. The transmitter consists of a low noise biopotential amplifier and a voltage controlled oscillator used to transmit the amplified neural signals at a frequency of 433 MHz. The circuit is powered through a transcutaneous,...RF telemetry; Transmitter; Neural recording; Low power circuits; Multielectrode arrays; Voltage controlled oscillator (VCO)2004-01-01
233 Harrison, Reid R.Low-power low-noise CMOS amplifier for neural recording applicationsThere is a need among scientists and clinicians for low-noise low-power biosignal amplifiers capable of amplifying signals in the millihertz-to-kilohertz range while rejecting large dc offsets generated at the electrode-tissue interface. The advent of fully implantable multielectrode arrays has cre...Bioamplifier; Analog integrated circuits; Biosignal amplifier; Low noise; Low-power circuit design; Neural recordings; Neural amplifier; Noise efficiency factor; Subthreshold circuit design; Weak inversion2003-06
234 Harrison, Reid R.Influence of system integration and packaging for a wireless neural interface on its wireless powering performanceIn an integrated wireless neural interface based on the Utah electrode array, the implanted electronics is supplied with power through inductive coupling between two coils. This inductive power link would be affected by conductive and dielectric media surrounding the implant coil. In this study, th...Implant coil; Wireless; Integrated Neural Interface; INI3; Utah Electrode Array2008-01-01
235 Stringfellow, Gerald B.Correlation between surface structure and ordering in GaInPGa and In atoms in Ga0.52In0.48P layers spontaneously segregate to form alternating In- and Ga-rich {111} monolayers during organometallic vapor phase epitaxial (OMVPE) growth on (001) oriented GaAs substrates, thus forming the CuPt ordered structure. This ordering phenomenon is believed to be drive...Transformations; Absorbtion spectra; Surface Properties1996
236 Mathews, V. JohnVolterra and general polynomial related filteringThis paper presents a review of polynomial filtering and, in particular, of tlie truncated Volterra filters. Following the introduction of the general properties of such filters, issues such as eficieiit realizations, design, adaptive algoritlims and stability are discussed.1993
237 Furse, Cynthia M.Miniaturized biocompatible microstrip antenna using genetic algorithmBiocompatible antennas are an area of recent research that can facilitate remote communication with medical implants. This paper shows several possible designs of a "waffle-type" antenna created using genetic algorithms (GAs) that are of a size potentially suitable for cardiac pacemakers in the 40...Biocompatible antennas; Pacemaker antenna; Medical telemetry devices2005-06
238 Mathews, V. JohnMultiplication free vector quantization using the L 1 distortion measure and its variantsVector quantization is a very powerful technique for data compression and consequently, it has attracted a lot for attention lately. One major drawback associated with this approach is its extreme computational complexity. This paper fist considers vector quantization that uses the L1 distortion mea...1992
239 Stringfellow, Gerald B.Step structure and ordering in Zn-doped GaInPPresents the results of a study of Zinc dopant effects on both step structure and ordering in GaInP in an effort to further clarify the disordering mechanism. Comparison of the results obtained for Zinc with those reported for tellurium; Experiment; Results; Discussion; Conclusion.Gallium Compounds; Zinc; Ordering1999
240 Mathews, V. JohnA minimax approach for the joint design of acoustic crosstalk cancellation filtersAbstract-This paper presents a method for jointly designing immersive audio rendering filters for a single listener using loudspeakers. The filters for crosstalk cancellation are assumed to have finite impulse responses and are designed using the minimax criterion. In addition to the traditional At...2007
241 Furse, Cynthia M.; Gandhi, Om P.Calculation of electric fields and currents induced in a millimeter-resolution human model at 60 Hz using the FDTD method with a novel time-to-frequency-domain conversionThe finite-difference time-domain (FDTD) method has previously been used to calculate induced currents in anatomically based models of the human body at frequencies ranging from 20 to 915 MHz and resolutions down to 1.31 cm . Calculations at lower frequencies and higher resolutions have been preclu...Finite-difference time-domain method; FDTD; Induced currents; Human body model1996
242 Harrison, Reid R.Wireless integrated circuit for 100-channel neural stimulationWe present the design of an integrated circuit for wireless neural stimulation, along with bench-top and in-vivo experimental results. The chip has the ability to drive 100 individual stimulation electrodes with constant-current pulses of varying amplitude, duration, interphasic delay, and repetiti...Wireless; Integrated Neural Interface; Neural recording; Telemetry2008-11
243 Stringfellow, Gerald B.Order and surface processes in III-V semiconductor alloysSemiconductor alloys have become increasingly useful during the last four decades because, through the use of alloys, the properties of semiconductors can be tailored by varying the composition to precisely match the requirements for specific electronic and photonic devices.Semiconductor alloys; Transmission-electron-diffraction pattern; Organometallic Vaper-phase epitaxy1997
244 Harrison, Reid R.Floating gate current mirror for gain correction in CMOS translinear circuitsThe exponential behavior of MOSFETs in subthreshold operation has recently been exploited to build CMOS translinear circuits such as multipliers and log-domain filters. A major obstacle in developing a practical CMOS implementation is the variation in threshold voltage between devices. In transline...1999-01-01
245 Mastrangelo, Carlos H.Personal navigation via shoe mounted inertial measurement unitsWe are developing a personal micronavigation system that uses high-resolution gait-corrected inertial measurement units. The goal of this project is to develop a navigation system that use secondary inertial variables, such as velocity, to enable long-term precise navigation in the absence of Global...2010
246 Mathews, V. JohnAdaptive volterra filters using orthogonal structuresAbstract- This paper presents an adaptive Volterra filter that employs a recently developed orthogonalization procedure of Gaussian signals for Volterra system identification. The algorithm is capable of handling arbitrary orders of nonlinearity P as well as arbitrary lengths of memory N for the sys...1995
247 Mathews, V. JohnStochastic gradient adaptive filters with gradient adaptive step sizesThis paper presents two adaptive step-size gradient adaptive filters. The step sizes are changed using a gradient descent algorithm designed to minimize the squared estimation error. The first algorithm uses the same step-size sequence for all the filter coefficients whereas the second algorithm use...1990
248 Mathews, V. JohnA stochastic gradient adaptive filter with gradient adaptive step sizeAbstract-This paper presents an adaptive step-size gradient adaptive filter. The step size of the adaptive filter is changed according to a gradient descent algorithm designed to reduce the squared estimation error during each iteration. An approximate analysis of the performance of the adaptive fil...1993
249 Myers, Chris J.Efficient timing analysis algorithms for timed state space exploration*Abstract This paper presents new timing analysis algorithms for efficient state space exploration during timed circuit synthesis. Timed circuits are a class of asynchronous circuits that incorporate explicit timing information in the specification which is used throughout the synthesis procedure t...1997
250 Furse, Cynthia M.Frequency-domain reflectometery for on-board testing of aging aircraft wiringAging aircraft wiring poses a significant safety threat and has been implicated in losses of both military and commercial aircraft. This paper describes the conceptual design and function of a "smart wiring system" based on a low-cost frequency-domain reflectometer (FDR) that can be used to test th...Frequency domain reflectometry; Aging wiring; On board testing2003-05
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