Filters: Department: "Electrical & Computer Engineering" Collection: "ir_uspace" Format: "application/pdf"
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 251 |
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Myers, Chris J. | Efficient exact two-level hazard-free logic minimization | Abstract This paper presents a new approach to two-level hazard-free sum-of-products logic minimization. No currently available minimizers for single-output literal-exact two-level hazard-free logic minimization can handle large circuits without synthesis times ranging up over thousands of seconds.... | 2001 | |
| 252 |
 |
Stringfellow, Gerald B. | Kinetically controlled order/disorder structure in GaInP | A Ga0.52In0.58p order/disorder heterostructure having a band-gap energy difference exceeding 160 meV has been grown by organometallic vapor phase epitaxy. The two layers were grown on a nominally (OOl)-oriented GaAs substrate misoriented by 3° toward the [110] direction in the lattice. The disorder... | Indium phosphides; Gallium Phosphides; Heterojunctions | 1994 |
| 253 |
 |
Myers, Chris J. | Direct synthesis of timed asynchronous circuits | This paper presents a new method to synthesize timed asynchronous circuits directly from the specification without generating a state graph. Our synthesis procedure begins with a deterministic signal transition graph specification to which timing constraints can be added. First, a timing analysis ex... | 1992 | |
| 254 |
 |
Tasdizen, Tolga; Jones, Bryan W.; Whitaker, Ross T. | Computational framework for ultrastructural mapping of neural circuitry | Circuitry mapping of metazoan neural systems is difficult because canonical neural regions (regions containing one or more copies of all components) are large, regional borders are uncertain, neuronal diversity is high, and potential network topologies so numerous that only anatomical ground truth c... | 2009 | |
| 255 |
 |
Simpson, Jamesina J. | An E-J collocated 3-D FDTD model of electromagnetic wave propagation in magnetized cold plasma | A new three-dimensional finite-difference time-domain (FDTD) numerical model is proposed herein to simulate electromagnetic wave propagation in an anisotropic magnetized cold plasma medium. Plasma effects contributed by electrons, positive, and negative ions are considered in this model. The current... | 2010-01-01 | |
| 256 |
 |
Furse, Cynthia M.; Gandhi, Om P.; Lazzi, Gianluca | Electromagnetic absorption in the human head and neck for mobile telephones at 835 and 1900 MHz | We have used the finite-difference time-domain method and a new millimeter-resolution anatomically based model of the human to study electromagnetic energy coupled to the head due to mobile telephones at 835 and 1900 MHz. Assuming reduced dimensions characteristic of today's mobile telephones, we h... | Electromagnetic absorption; FDTD; Finite-difference time-domain; Specific absorption rates; SAR | 1996-01-01 |
| 257 |
 |
Mathews, V. John | A stability condition for certain bilinear systems | Abstract-This correspondence derives a simple sufficient condition for the output of a discrete-time, time-invariant bilinear system to be bounded whenever the input signal to the system is bounded by a finite constant. | 1994 | |
| 258 |
 |
Furse, Cynthia M. | Selection criteria of test signals for correlation-based wire fault analysis (preprint) | This paper compares reflectometry signals for location of intermittent faults on live electrical cables. STDR, SSTDR, linear chirp, quadratic chirp, concave-up chirp, convex-down chirp and all frequency randomized phase noise signals were tested. The SSTDR was observed to be the most effective sig... | 2006 | |
| 259 |
 |
Tasdizen, Tolga; Whitaker, Ross T.; Jones, Bryan W. | Optimal-path approach for neural circuit reconstruction | Neurobiologists are collecting large amounts of electron microscopy image data to gain a better understanding of neuron organization in the central nervous system. Image analysis plays an important role in extracting the connectivity present in these images; however, due to the large size of these ... | 2008 | |
| 260 |
 |
Stringfellow, Gerald B. | Vapor phase interaction of trimethylaluminum with graphite during OMVPE | We have used a molecular beam mass spectrometer to study the interaction of trimethylaluminum (TMA) with graphite surfaces. Our results indicate that a strong adsorption effect occurs which explains phenomena occuring during OMVPE growth of AlxGa1-xAs, such as long A1 transients, oxygen gettering, a... | Organometallic vapor phase epitaxy; Thermodynamics; Graphite; Trimethylaluminum | 1982 |
| 261 |
 |
Harrison, Reid R.;Normann, Richard A. | Low-power integrated circuit for a wireless 100-electrode neural recording system | In the past decade, neuroscientists and clinicians have begun to use implantable MEMS multielectrode arrays (e.g., [1]) to observe the simultaneous activity of many neurons in the brain. By observing the action potentials, or "spikes," of many neurons in a localized region of the brain it is possibl... | Electrode; Multielectrode arrays (MEA); Neural recording; Low-power circuits; Wireless | 2006-01-01 |
| 262 |
 |
Mathews, V. John | Detection and estimation with fixed lag for abruptly changing systems | The problem of state estimation and system structure detection for discrete-time stochastic systems with parameters which may switch among a finite set of values is considered. The switchings are modeled by a semi-Markov, or Markov, chain with known transition statistics. A fixed time delay (lag) is... | 1983 | |
| 263 |
 |
Stevens, Kenneth | Relative timing | Abstract-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 | |
| 264 |
 |
Furse, Cynthia M. | Noise-domain reflectometry for locating wiring faults | Abstract-Reflectometry is commonly used to determine the integrity of cables and wiring. This paper describes a new family of reflectometers, the noise-domain reflectometers (NDR), that uses existing data signals on wiring and does not need to generate any signals of their own. There are two types o... | 2005 | |
| 265 |
 |
Mathews, V. John | Vector quantization using the L∞ distortion measure | Abstract-This paper considers vector quantization of signals using the L1 distortion measure. The key contribution is a result that allows one to characterize the centroid of a set of vectors for the L1 distortion measure. A method similar to the Linde-Buzo-Gray (LBG) algorithm for designing codeboo... | 1997 | |
| 266 |
 |
Mathews, V. John | Efficient block-adaptive parallel-cascade quadratic filters | Abstract-This brief presents computationally efficient block-adaptive algorithms for quadratic filters employing parallel-cascade realizations of the system model. Parallel-cascade realizations implement higher order Volterra systems using a parallel connection of multiplicative combinations of lowe... | 1999 | |
| 267 |
 |
Myers, Chris J. | Learning genetic regulatory network connectivity from time series data | Abstract. Recent experimental advances facilitate the collection of time series data that indicate which genes in a cell are expressed. This paper proposes an efficient method to generate the genetic regulatory network inferred from time series data. Our method fi_x000C_rst encodes the data into le... | 2006 | |
| 268 |
 |
Myers, Chris J. | Effcient verification of hazard-freedom in gate-level timed asynchronous circuits | This paper presents an efficient method for verifying hazard freedom in timed asynchronous circuits. Timed circuits are a class of asynchronous circuits that utilize explicit timing information fur optimization throughout the entire design process. In asynchronous circuits, correct operation require... | 2003 | |
| 269 |
 |
Myers, Chris J. | Efficient verification of hazard-freedom in gate-level timed asynchronous circuits | Abstract-This paper presents an efficient method for verifying hazard-freedom in gate-level timed asynchronous circuits. Timed circuits are a class of asynchronous circuits that are optimized using explicit timing information. In asynchronous circuits, correct operation requires that there are no ha... | 2007 | |
| 270 |
 |
Mathews, V. John | An efficient algorithm for lattice filter/predictor | ABSTRACT An efficient method for updating the lattice filter/predictor coefficients using the sign algorithm is introduced. The pertinent coefficients are updated using only the signs of the estimation errors at each stage. This method requires less number of multiplications than other adaptive la... | 1985 | |
| 271 |
 |
Stringfellow, Gerald B. | Heterostructures in GaInP grown using a change in V/III ratio | A natural monolayer 111% superlattice -- the CuPt ordered structure -- is formed spontaneously during organometallic vapor phase epitaxial OMVPE growth of Ga0.52In0.48P. The extent of this ordering process is found to be a strong function of the input partial pressure of the phosphorus precursor dur... | Superlattices; Alloys; Atomic ordering; Heterostructures | 1997-02-24 |
| 272 |
 |
Myers, Chris J. | Analog decoding of product codes | A design approach is presented for soft-decision decoding of block product codes ("block turbo codes") using analog computation with MOS devices. Application of analog decoding to large code sizes is also considered with the introduction of serial analog interfaces and pipeline schedules. | 2001 | |
| 273 |
 |
Stringfellow, Gerald B. | Thermodynamic aspects of organometallic VPE | Organometallic vapor phase epitaxy (OMVPE) is a new crystal growth technique which is rapidly gaining popularity due to its simplicity, flexibility and proven ability to grow excellent quality III/V compounds and alloys for device applications. | Organometallic vapor phase epitaxy; Thermodynamics | 1982 |
| 274 |
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Myers, Chris J. | Synthesis of timed asynchronous circuits | In this paper we present a systematic procedure to synthesize timed asynchronous circuits using timing constraints dictated by system integration, thereby facilitating natural interaction between synchronous and asynchronous circuits. In addition, our timed circuits also tend to be more &dent, in b... | 1993 | |
| 275 |
 |
Mathews, V. John | On the inversion of certain nonlinear systems | Abstract-In this letter, we present some theorems for the exact inversion and the pth-order inversion of a wide class of causal, discrete-time, nonlinear systems. The nonlinear systems we consider are described by the input-output relationship y(n) = g[x(n)]h[x(n - 1); y(n - 1)]+f[x(n - 1); y(n - 1)... | 1997 |