Filters: Department: "Electrical & Computer Engineering" Collection: "ir_uspace" Format: "application/pdf"
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 376 |
 |
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 |
| 377 |
 |
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 | |
| 378 |
 |
Furse, Cynthia M. | Non-destructive fault location on aging aircraft wiring networks, Part 2- live wires in flight | Aging aircraft wiring has been identified as an area of critical national concern. As the system ages, the wires become brittle and crack, break, or develop short circuits. Short circuits, in particular, have been implicated in a variety of smoke incidents, in-flight fires, and crashes. Some of thes... | 2003-01-01 | |
| 379 |
 |
Furse, Cynthia M. | Noncontact probes for wire fault location with reflectometry | This paper describes an approach to locate wire faults using reflectometry without physical contact with the wire conductor. This noncontact method is capable of locating faults on both dead and live powered wires with today's reflectometry technologies, and it does not require any modification or ... | Wire fault location; Noncontact probes; Reflectometry; Capacitive coupling; Inductive coupling; Aging aircraft wire | 2006 |
| 380 |
 |
Stringfellow, Gerald B. | Nonequilibrium composition profiles of alloy quantum dots and their correlation with the growth mode | Equilibrium composition profiles (CPs) of epitaxial alloy quantum dots (QDs) are well established theoretically. However nonequilibrium CPs may occur experimentally. Using an atomistic-strain-model Monte Carlo simulation method, we demonstrate a striking correlation between the nonequilibrium CPs of... | 2011 | |
| 381 |
 |
Furse, Cynthia M. | Novel inverse methods for wire fault detection and diagnosis | Abstract?In recent years, methods used to locate and diagnose wiring faults have increased in complexity and variety. However, there is much research yet to take place in order to develop high resolution models for accurately analysis of the effects of small faults, gradual impedance discontinuities... | 2011 | |
| 382 |
 |
Khan, Faisal Habib | On the design of efficient magnetic coils for the stimulation of peripheral nerves | Neural stimulators are the key building blocks of current neuroprosthetic systems, such as cochlear and retinal implants. Due to direct current injections and foreign body reactions, conventional current passing electrodes suffer from reduced performance and reduced lifetimes. However, magnetic fiel... | 2013-01-01 | |
| 383 |
 |
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 | |
| 384 |
 |
Mathews, V. John | On the inversion of certain nonlinear systems | 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); (n-1)]+f[x(n-1); y(n-1)], here g[], h[; ]... | 1997-01-01 | |
| 385 |
 |
Simpson, Jamesina J. | On the possibility of high-level transient coronal mass ejection-induced ionospheric current coupling to electric power grids | [1] Short-time (<10 s) ionospheric current fluctuations are hypothesized to occur due to a coronal mass ejection that can induce high‐level transient voltages on long overhead power transmission lines. This hypothesis is first supported by reviewing published literature and recent magnetometer mea... | 2011-01-01 | |
| 386 |
 |
Mathews, V. John | On using the short-time unbiased spectrum estimation algorithm for estimating time delays and magnitude squared coherence functions | This paper introduces novel applications of the short-time unbiased sprectral estimation (STUSE) algorithm, which adds biased estimates to yield unbiased spectral estimates. It is shown that STUSE algorithm is an effective tool for estimating time delays and magnitude-squared coherence (MSC) functio... | 1983 | |
| 387 |
 |
Blair, Steven | Optical antenna design for fluorescence enhancement in the ultraviolet | Through rational design, we compare the performance of three plasmonic antenna structures for UV fluorescence enhancement. Among the antenna performance metrics considered are the local increase in excitation intensity and the increase in quantum efficiency, the product of which represents the net f... | 2012-01-01 | |
| 388 |
 |
Blair, Steven | Optical characterization of coupled resonator slow-light rib waveguides | We report on the design, fabrication and optical characterization of a slow light waveguide created using a linear array of coupled resonators in a large cross-section rib waveguide. Structures with as many as 25 high aspect ratio resonators are experimentally investigated. The measured propagation ... | 2010 | |
| 389 |
 |
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 | |
| 390 |
 |
Furse, Cynthia M. | Optimization of a buried microstrip antenna for simultaneous communication and sensing of soil moisture | Imbedded microstrip antennas have been previously demonstrated for use either as sensing elements or as components of a wireless communication system. This paper presents a method and dual use designs for simultaneous sensing of soil moisture and communication from the buried antenna to an external... | Finite-difference time domain; FDTD; Automatic sprinkler control systems | 2006-03 |
| 391 |
 |
Stringfellow, Gerald B. | Order and surface processes in III-V semiconductor alloys | Semiconductor 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 epitaxy | 1997 |
| 392 |
 |
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 |
| 393 |
 |
Stringfellow, Gerald B.; Cohen, Richard M. | Organometallic vapor phase epitaxial growth of high purity GaInAs using trimethylindium | Gax In1−xAs lattice matched to the InP substrate (x=0.47) has been grown by organometallic vapor phase epitaxy using trimethylindium (TMIn) and trimethylgallium (TMGa) as the group III sources and AsH3 as the As source. In a simple, horizontal, atmospheric pressure reactor, the GaInAs growth proce... | Electron mobilities; Photouminescience; Fabricate modulation | 1984-03-01 |
| 394 |
 |
Mathews, V. John | Orthogonalization of correlated gaussian signals for volterra system identification | This letter presents a simple method for orthogonalizing correlated Gaussian input signals for identification of truncated Volterra systems of arbitrary order of nonlinearity P and memory length N. The procedure requires a Gram-Schmidt orthogonalizer for a vector containing N elements and some nonli... | 1995 | |
| 395 |
 |
Khan, Faisal Habib | Output impedance modeling of a multilevel modular switched-capacitor converter to achieve continuously variable conversion ratio | The multilevel modular capacitor clamped dc-to-dc converter (MMCCC) topology is completely modular and belongs to two-phase switched capacitor converter group. The conversion ratio of an ideal MMCCC converter in step-up mode is an integer and depends on the number of modules used. For a k-module MMC... | 2012-01-01 | |
| 396 |
 |
Mathews, V. John | Output-error adaptive bilinear filters | This paper presents an overview of several gradient type recursive algorithms for adaptive nonlinear filters equipped with bilinear system models. Bilinear models are attractive because they can approximate a large class of nonlinear systems with great parsimony in the use of coefficients. Two al... | 1991 | |
| 397 |
 |
Mathews, V. John | Output-error LMS bilinear filters with stability monitoring | ABSTRACT This paper introduces output-error LMS bilinear filters with stability monitoring. Bilinear filters are recursive nonlinear systems that belong to the class of polynomial systems. Because of the feedback structure, such models are able to represent many nonlinear systems efficiently. ... | 1995 | |
| 398 |
 |
Mathews, V. John | Parallel-cascade realizations and approximations of truncated volterra systems | Abstract This paper introduces parallel-cascade realizations of truncated Volterra systems with arbitrary, but finite order of nonlinearity. Parallel-cascade realizations implement higher-order Volterra systems using parallel and multiplicative combinations of lower-order Volterra systems. Such rea... | 1996 | |
| 399 |
 |
Mathews, V. John | Parallel-cascade realizations and approximations of truncated volterra systems | This paper introduces parallel-cascade realizations of truncated Volterra systems with arbitrary, but finite order of nonlinearity. Parallel-cascade realizations implement higher-order Volterra systems using parallel and multiplicative combinations of lower-order Volterra systems. Such realizations ... | 1996-01-01 | |
| 400 |
 |
Mathews, V. John | Parallel-cascade realizations and approximations of truncated volterra systems | Abstract- This correspondence introduces parallel-cascade realizations of truncated Volterra systems with an arbitrary but finite order of nonlinearity. Parallel-cascade realizations implement higher order Volterra systems using parallel and multiplicative combinations of lower order Volterra system... | 1998 |