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CreatorTitleDescriptionSubjectDate
426 Mathews, V. JohnPredictive vector quantization of images using a constrained two-dimensional autoregressive predictorA novel approach to image compression using vector quantization of linear (one-step) prediction errors is presented in this paper. In order to minimize the image reconstruction error, we choose the optimum predictor coefficients (in a least-squares sense) that satisfy the additional constraint that ...1987
427 Cotter, Neil E.Prejudicial search and backpropThis paper introduces the combination of backward error propagation and prejudicial search. Prejudicial search is a method, which like simulated annealing, guarantees convergence to a global minimum as time approaches infinity. Unlike simulated annealing, its application is more flexible because it ...1991
428 Harrison, Reid R.;Normann, Richard A.Preliminary study of thermal impact of a microelectrode array implanted in the brainOne requirement of a chronically implantable, wireless neural interface device is the integration of electronic circuitry with the microelectrode array. Since the electronic IC dissipates a certain amount of power, it will affect the temperature in the tissues surrounding the implant site. In this ...Microelectrode arrays; Neural recording; Utah Electrode Array; Thermal impact2006-08
429 Tasdizen, TolgaPrincipal components for non-local means image denoisingThis paper presents an image denoising algorithm that uses principal component analysis (PCA) in conjunction with the non-local means image denoising. Image neighborhood vectors used in the non-local means algorithm are first projected onto a lower-dimensional subspace using PCA. Consequently, neigh...2008
430 Tasdizen, TolgaPrincipal neighborhood dictionaries for nonlocal means image denoisingWe present an in-depth analysis of a variation of the nonlocal means (NLM) image denoising algorithm that uses principal component analysis (PCA) to achieve a higher accuracy while reducing computational load. Image neighborhood vectors are first projected onto a lower dimensional subspace using PC...2009
431 Mastrangelo, Carlos H.Probing protein binding spectra with fourier microfluidicsNew developments in microfluidic chip technology enable the construction of chemical spectrum analyzers that can probe the binding interactions between chemical entities. In this paper we report the implementation of a microfluidic chip suitable for Fourier transform measurements of biochemical int...2010
432 Furse, Cynthia M.; Christensen, Douglas A.Problem and treatment of DC offsets in FDTD simulationsThis paper discusses the causes of and some solutions to the commonly observed problem of dc field offsets in finite-difference time-domain (FDTD) simulations. DC electric and magnetic field offsets are shown to be valid calculated responses of the modeled systems, resulting from interaction betwee...FDTD simulations; Finite-difference time-domain; DC offsets2000-01-01
433 Myers, Chris J.Production-passage-time approximation: a new approximation method to accelerate the simulation process of enzymatic reactionsGiven the substantial computational requirements of stochastic simulation, approximation is essential for efficient analysis of any realistic biochemical system. This paper introduces a new approximation method to reduce the computational cost of stochastic simulations of an enzymatic reaction schem...2008-09
434 Furse, Cynthia M.Prof. James R. wait and mining production technology--an appreciationProf. James R. Wait examined electromagnetic (EM) wave propagation in many situations of interest to mining production, including propagation in tunnels, propagation along extended conductors such as cables and drill stems, and propagation in coal seams. This work remains relevant, both to the mini...James R. Wait; Electromagnetic wave propagation; Geologic measurements; Mining industry2000-09
435 Mathews, V. JohnQR-decomposition based algorithms for adaptive volterra filteringAbstract - In this paper we present a pair of QR-RLS adaptive algorithms for second-order Volterra filtering. The algorithms are based solely on Given's rotations. Hence both the algorithms are numerically stable and highly amenable to parallel implementations. The computational complexity of one of...1992
436 Mathews, V. JohnQR-decomposition based algorithms for adaptive volterra filteringA QR-RLS adaptive algorithm for nonlinear filtering in presented. The algorithm is based solely on Givens rotation. Hence the algorithm is numerically stable and highly amenable to parallel implementations. The computational complexity of the algorithm is comparable to that of the fast transversal V...1993
437 Khan, Faisal HabibQuantifying device degradation in live power converters using SSTDR assisted impedance MatrixA noninterfering measurement technique designed around spread spectrum time domain reflectometry (SSTDR) has been proposed in this paper to identify the level of aging associated with power semiconductor switches inside a live converter circuit. Power MOSFETs are one of the most age-sensitive compon...2014-01-01
438 Stringfellow, Gerald B.; Inglefield, Colin E.; Taylor, P. CraigQuantum wells due to ordering in GaInPCuPt ordering results in a reduction of the band-gap energy of GaInP. Thus, heterostructures and quantum wells can be produced by simply varying the order parameter, without changing the solid composition. Changes in the order parameter can be induced by changes in growth conditions. The disorder...Band-gap energy; Growth temperature; Quantum wells1998-12-28
439 Stevens, Kenneth; Myers, Chris J.RAPPID: an asynchronous instruction length decoderThis paper describes an investigation of potential advantages and risks of applying an aggressive asynchronous design methodology to Intel Architecture. RAPPID ("Revolving Asynchronous Pentium® Processor Instruction Decoder"), a prototype IA32 instruction length decoding and steering unit, was...1999
440 Myers, Chris J.; Stevens, KennethRAPPID: an asynchronous instruction length decoderThis paper describes an investigation of potential advantages and risks of applying an aggressive asynchronous design methodology to Intel Architecture. RAPPID ("Revolving Asynchronous Pentium® Processor Instruction Decoder"), a prototype IA32 instruction length decoding and steering unit, was...1999
441 Stevens, KennethRadiation hardening by design of asynchronous logic for hostile environmentsA wide range of emerging applications is driving the development of wireless sensor node technology towards a monolithic system-on-a-chip implementation. Of particular interest are hostile environment scenarios where radiation and thermal extremes exist. Radiation hardening by design has been recogn...2009
442 Stringfellow, Gerald B.Radiative pair transitions in p-type ZnSe:Cu crystalsShallow levels with an ionization energy of 0.012 eV play an important role in the photoelectronic properties of p-type ZnSe:Cu crystals. These levels exhibit the characteristics of the higher-lying member of an imperfection pair involved in luminescence emission, as well as of a trap determining lo...Ionization energy; Luminescence emission; Crystals1968
443 Harrison, Reid R.; Furse, Cynthia M.Recent advances in biomedical telemetryCommunication systems for implantable medical devices are rapidly advancing. Cardiac, optical, neurological and auditory devices all utilize this technology. Miniaturized antennas and inductive coupling systems provide the radio interface between air and the implantable device. Miniaturized electro...Wireless telemetry; Transeiver architectures; Inductive coupling; Coils2007-09
444 Mathews, V. John; Clark, Edward B.Reconstruction of maximum blood velocity waveforms from doppler ultrasound measurementsAbsfauct -This paper presents a novel algorithm for the extraction of maximum blood flow velocity waveform from Doppler measurements. This method is based on the short-term integrated spectrum of the Doppler signal, and does not require a pre-selected threshold level to deal with the background nois...2002
445 Furse, Cynthia M.Recovering handset MIMO capacity with polarization-agile antennasMultiple Input Multiple Output (MIMO) communication systems rely on significant variation between multiple signal paths to create independent channels for communication. Transceiver signal strength to or from a portable handset is subject to large variations due to the "essentially random orientatio...2007-06
446 Furse, Cynthia M.Recovering handset diversity and MIMO capacity with polarization-agile antennasDesign guidance is provided for multiple-input-multiple- output (MIMO) antenna systems on handsets-a strong prospect for next generation wireless devices. Handheld wireless devices are likely to be rotated out of their optimal polarization, thereby experiencing significant power losses. An existin...Adaptive arrays; Diversity methods; Multiple-intput-multiple-output; MIMO; Handset diversity; Handheld devices; Polarization agile antenna2007-11
447 Furse, Cynthia M.Reflectometry for structural health monitoringAging wiring and structural cables in buildings, aircraft and transportation systems, consumer products, industrial machinery, etc. are among the most significant potential causes of catastrophic failure and maintenance cost in these structures. Smart wire health monitoring can therefore have a subs...2011-01-01
448 Stevens, KennethRelative timingAbstract-Relative timing (RT) is introduced as a method for asynchronous design. Timing requirements of a circuit are made explicit using relative timing. Timing can be directly added, removed, and optimized using this style. RT synthesis and verification are demonstrated on three example circuits,...2003
449 Stevens, KennethRelative timingRelative Timing is introduced as an informal method for aggressive asynchronous design. It is demonstrated on three example circuits (C-Element, FIFO, and RAPPID Tag Unit), facilitating transformations from speed-independent circuits to burst-mode, relative timed, and pulse-mode circuits. Relative ...1999
450 Stevens, KennethRelative timing based verification of timed circuits and systemsAggressive timed circuits, including synchronous and asynchronous self-resetting circuits, are particularly challenging to design and verify due to complicated timing constraints that must hold to ensure correct operation. Identifying a small, sufficient, and easily verifiable set of relative timin...2002
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