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Creator | Title | Description | Subject | Date |
| 151 |
 |
Mathews, V. John | Identification of nonlinear, memoryless systems using chebyshev nodes | ABSTRACT This paper describes an approach for identification of static nonlinearities from input-output measurements. The approach is based on minimax approximation of memoryless nonlinear systems using Chebyshev polynomials. For memoryless nonlinear systems that are finite and continuous with fini... | | 2005 |
| 152 |
 |
Mathews, V. John | Howling suppression in hearing aids using least-squares estimation and perceptually motivated gain control | ABSTRACT Howling is a significant problem even in digital hearing aids equipped with adaptive feedback cancellation. Among the many causes of howling is the inability of the adaptive filter to track rapid changes in the feedback path. Many systems use howling detectors to detect the start of howlin... | | 2006 |
| 153 |
 |
Stevens, Kenneth | Modeling and verifying circuits using generalized relative timing | We propose a novel technique for modeling and verifying timed circuits based on the notion of generalized relative timing. Generalized relative timing constraints can express not just a relative ordering between events, but also some forms of metric timing constraints. Circuits modeled using gener... | | 2005 |
| 154 |
 |
Stringfellow, Gerald B. | Use of Nitrogen to disorder GaInP | Significant changes in microstructure, surface structure, and alloy composition have been observed in GaInP with the addition of nitrogen. These effects occur due to surface changes induced by small concentrations of nitrogen. Transmission electron microscopy and photoluminescence experiments indica... | Nitrogen; Alloys; Transmission | 2004 |
| 155 |
 |
Myers, Chris J. | Verification of timed circuits with failure directed abstractions | This paper presents a method to address state explosion in timed circuit verification by using abstraction directed by the failure model. This method allows us to decompose the verification problem into a set of subproblems, each of which proves that a specific failure condition does not occur. To... | | 2003 |
| 156 |
 |
Mathews, V. John | A new model of perceptual threshold functions for application in image compression systems | This paper discusses the development of a perceptual threshold model for the human visual system. The perceptual threshold functions describe the levels of distortions present at each location in an image that human observers can not detect. Models of perceptual threshold functions are useful in ima... | | 1995 |
| 157 |
 |
Stevens, Kenneth | Algorithms for MIS vector generation and pruning | Ignoring the effect of simultaneous switching for logic gates causes silicon failures for high performance microprocessor designs. The main reason to omit this effect is the run time penalty and potential over-conservatism. Run times are directly proportional to the vector sizes. Efficient algorithm... | | 2006 |
| 158 |
 |
Stringfellow, Gerald B. | Organometallic vapor phase epitaxial growth of AlGaInP | Alx Ga,, In, _ x _ y P with x + y = 0.51, lattice matched to the GaAs substrate, has been grown by organometaUic vapor phase epitaxy. The simple, horizontal, IR heated system operates at atmospheric pressure using the reactants TMA1, TMGa, TMln, PH3, and K2. Alloys giving room temperature, band edge... | Liquid phase epitaxial growth; LPE; Alloys; Surface morphology | 1985 |
| 159 |
 |
Furse, Cynthia M. | Statistical comparison of capacity predictions for realistic MIMO channels | The impact of antenna polarization on channel capacity is explored in multiple-input, multiple-output (MIMO) systems. An idealized polarization model involving branch power rations (BPR's) and channel cross-coupling is incorporated into channel-specific capacity calculations. Results are compared f... | | 2007-01-01 |
| 160 |
 |
Myers, Chris J.; Stevens, Kenneth | An asynchronous instruction length decoder | Abstract-This paper describes an investigation of potential advantages and pitfalls of applying an asynchronous design methodology to an advanced microprocessor architecture. A prototype complex instruction set length decoding and steering unit was implemented using self-timed circuits. [The Revolvi... | | 2001 |
| 161 |
 |
Stringfellow, Gerald B. | Step structure and ordering in GaInP | Presents information from an experiment on the step structure and ordering in GalnP. Information on the step spacing and degree of order in the epitaxial layers; Details on the experiment; Results from the experiment. | Physics; Ordering; Steps | 1998 |
| 162 |
 |
Stringfellow, Gerald B. | Radiative pair transitions in p-type ZnSe:Cu crystals | Shallow 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; Crystals | 1968 |
| 163 |
 |
Stevens, Kenneth | Radiation hardening by design of asynchronous logic for hostile environments | A 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 |
| 164 |
 |
Stevens, Kenneth | Scalable asynchronous hardware protocol verification for compositions with relative timing | Correct interaction of asynchronous hardware protocols requires verification. Performance and power of asynchronous hardware circuits and protocols can be vastly improved by modifying them with judicious application of timing constraints. A methodology is presented for verifying larger asynchronous ... | | 2010 |
| 165 |
 |
Mathews, V. John | An efficient algorithm for joint estimation of differential time delays and frequency offsets | ABSTRACT This paper introduces an efficient algorithm that jointly estimates differential time delays and frequency offsets between two signals. The approach is a two-step procedure. First, the differential frequency offsets are estimated from measurement of the autocorrelation functions of the rec... | | 1992 |
| 166 |
 |
Harrison, Reid R. | MDAC synapse for analog neural networks | Efficient weight storage and multiplication are important design challenges which must be addressed in analog neural network implementations. Many schemes which treat storage and multiplication separately have been previously reported for implementation of synapses. We present a novel synapse c... | Multiplying digital-to-analog converter; MDAC synapse; Analog neural networks | 2004-01-01 |
| 167 |
 |
Furse, Cynthia M. | Take a Stand: Speaking about RF Safety | Tell your students at the beginning of the semester that they need to prepare a speech and deliver it before an off-campus audience, and they will not exactly be leaping out of their seats with joy. Remind them a week in advance that their speech is coming up, and you will inevitably have a student ... | Radio frequency safety; RF safety | 2004-12 |
| 168 |
 |
Myers, Chris J. | Stochastic cycle period analysis in timed circuits | This paper presents the stochastic cycle period as a performance metric for timed asynchronous circuits. The stochastic cycle period is a sum of weighted delays whose value represents the expected delay of a single cycle in the specification. Each weight denotes the amount of time a delay contribute... | | 1999 |
| 169 |
 |
Stringfellow, Gerald B. | Control of ordering in Ga0.5In0.5P using growth temperature | The kinetic processes leading to ordering in Gas,, In o.4P8 have been studied by observing the effects of substrate misorientation (O-9), growth rate (0.1-0.5), and substrate temperature (570- 670 "C) during growth. The ordered structure and degree of ordering are determined using transmission elec... | Ordering Structure; Growth Temprature; Growth Rate | 1994 |
| 170 |
 |
Furse, Cynthia M. | Prof. James R. wait and mining production technology--an appreciation | Prof. 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 industry | 2000-09 |
| 171 |
 |
Stevens, Kenneth | Power reduction through physical placement of asynchronous routers | Our work reduces power consumption by minimizing wirelength and hop-count of an asynchronous NoC using simulated annealing and force-directed algorithms. Asynchronous NoCs (aNoCs) can provide important benefits over clocked NoCs. However, there is little published research on generating a custom, ... | | 2009 |
| 172 |
 |
Myers, Chris J. | ILP-based scheduling for asynchronous circuits in bundled-data implementation | In this paper, we propose a new scheduling method for asynchronous circuits in bundled-data implementation. The method is based on integer linear programming (ILP) which explores an optimum schedule under resource or time constraints. To schedule descriptions with many operations,our method approx... | | 2006 |
| 173 |
 |
Furse, Cynthia M.; Gandhi, Om P. | Computations of SAR distributions for two anatomically-based models of the human head using CAD files of commercial telephones and the parallelized FDTD code | The Finite Difference Time Domain (FDTD) method is well suited for the computation of bio-electromagnetic effects and has become the method of choice for most researchers in this area. There does however remain some limitations on its use. Firstly the FDTD method requires large amounts of memory and... | Finite-difference time-domain method; FDTD; SAR distributions; CAD files | 1997 |
| 174 |
 |
Tasdizen, Tolga | Principal components for non-local means image denoising | This 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 |
| 175 |
 |
Stringfellow, Gerald B. | Nitrogen surfactant effects in GaInP | The addition of surfactant nitrogen during the growth of GaInP on 001 GaAs substrates produces significant and interesting changes in the optical and morphological properties of GaInP. In particular, multiple peaks are seen in the low temperature photoluminescence (PL) spectra of GaInP/GaInP:N he... | Surfactant nitrogen; Microscopy; Crystals | 2004 |
