Filters: Department: "Electrical & Computer Engineering" Collection: "ir_uspace" School Or College: "College of Engineering"
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 426 |
 |
Harrison, Reid R.; Charles, Cameron Townley | Floating gate common mode feedback circuit for low noise amplifiers | Most low noise amplifier designs focus on eliminating sources of noise that are intrinsic 1.0 the amplifier (thermal noise, Ilfnoise). As integrated (circuit design moves increasingly towards mixed signal implementations, the design of low-noise malog amplifiers must be re-evaluated to consider th... | Floating gate; Common mode feedback circuit; Low noise amplifiers | 2003-01-01 |
| 427 |
 |
Tasdizen, Tolga; Foster, Norman L. | Automatic classification of alzheimer's desease vs. frontotemporal dementia: a spatial decision tree aprroach with FDG-PET | We introduce a novel approach for the automatic classification of FDG-PET scans of subjects with Alzheimers Disease (AD) and Frontotemporal dementia (FTD). Unlike previous work in the literature which focuses on principal component analysis and predefined regions of interest, we propose the combined... | 2008 | |
| 428 |
 |
Mathews, V. John | Low-delay nonuniform pseudo-QMF banks with application to speech enhancement | Abstract-This paper presents a method for designing low-delay nonuniform pseudo quadrature mirror filter (QMF) banks. This method is motivated by the work of Li, Nguyen, and Tantaratana, in which the nonuniform filter bank is realized by combining an appropriate number of adjacent sub-bands of a uni... | 2007 | |
| 429 |
 |
Stringfellow, Gerald B. | Electron mobility in compensated GaAs and AlGaAs | The dependence of electron mobility on temperature in GaAs and Al Ga As indicates that for cimpensated material a term having causes a significant reduction in the mobility measured at high temperatures. The magnitude of the term in mobility, denoted is found to be linearly proportional to the compe... | Unspecified mobility; Reduced mobility; Space charge regions | 1980 |
| 430 |
 |
Mathews, V. John | Stochastic mean-square performance analysis of an adaptive Hammerstein filter | ABSTRACT This paper presents an almost sure (a.s.) mean-square performance analysis of an adaptive Hammerstein filter for the case when the measurement noise in the desired response signal is a martingale difference sequence. The system model consists of a series connection of a memoryless nonlinea... | 2004 | |
| 431 |
 |
Mathews, V. John | Adaptive parallel-cascade truncated volterra filters | Abstract-This paper studies adaptive truncated Volterra filters employing parallel-cascade structures. Parallel-cascade realizations implement higher order Volterra systems a s a parallel connection of multiplicative combinations of lower order truncated Volterra systems. A normalized LMS adaptive f... | 1998 | |
| 432 |
 |
Khan, Faisal Habib | Challenges and solutions in measuring computer power supply efficiency for 80 PLUS® certification | This paper discusses the techniques, challenges, and results of measuring computer power supply (CPS) efficiency, power factor (PF), and input harmonic currents for the 80 PLUS® program since its beginning in 2002. To date, over 750 power supplies have been tested with many certified for the 80 PL... | 2009-02 | |
| 433 |
 |
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... | 1999 | |
| 434 |
 |
Harrison, Reid R. | Eyes and ears: combining sensory motor systems modelled on insect physiology | Integrating sensorimotor systems is still a difficult problems for robotics. Biological inspiration, which has been effectively used to address single sensorimotor tasks, could also be applied to this problem. Several studies on the cricket suggest that it integrates an optomotor response to two exi... | 2000-01-01 | |
| 435 |
 |
Mathews, V. John | Equalization of recursive polynomial systems | Abstract-This letter presents some theorems for the exact and pth-order equalization of nonlinear systems described by recursive polynomial input-output relationships. It is shown that the nonlinear equalizers derived on the basis of this theory have simple and computationally efficient structures. ... | 1999 | |
| 436 |
 |
Furse, Cynthia M. | Measured multi-user MIMO capacity in Aircraft | The multipath richness typical of aircraft channels represents a potentially well-suited environment for multi-user multiple-input multiple-output technology (MU-MIMO). This paper presents results from measurements of the achievable MU-MIMO data rates in a Rockwell T-39 Sabreliner, using an open-so... | 2010 | |
| 437 |
 |
Stringfellow, Gerald B. | Compositional modulation and ordering in semiconductors | The science of materials as a specific discipline is a relatively modern development. Within this rather modern field, the study of semiconductor materials is an even more recent development. Modern textbooks on materials science focus primarily on the properties of metals and second on the properti... | Materials scientists; Controlled ordering | 1997 |
| 438 |
 |
Stringfellow, Gerald B. | Influence of Sb, Bi, Tl, and B on the incorporation of N in GaAs | GaAs:N is an interesting material for many devices due to its unique compositional variation of band gap. Small amounts of N lead to a strong decrease in band gap energy as well as lattice constant. The further addition of In or Sb leads to quaternary alloys with band gap energies below 1.4 eV latti... | Antimony; Gallium Arsenide; Nitrogen | 2002 |
| 439 |
 |
Stringfellow, Gerald B. | Surface photoabsorption study of the effect of V/III ratio on ordering in GaInP | Cu-Pt ordering is widely observed in Ga0.5In0.5P layers grown by organometallic vapor phase epitaxy. The degree of order is a strong function of the input partial pressure of the phosphorus precursor, i.e., the V/III ratio, during growth. By observing the surface structure using in situ surface p... | Degree of order; Photoluminescence; Transmission electron microscopy | 1996 |
| 440 |
 |
Furse, Cynthia M. | Inexpensive distance measuring system for location of robotic vehicles | An distance-measuring system based on a swept frequency reflectometer radar system was built and tested for application to navigation of robotic vehicles in a sealed room where GPS signals are not available. The final system built en masse would cost approximately $25. The system was simulated using... | Swept frequency reflectometer radar system; Robotic vehicles | 2002-04-20 |
| 441 |
 |
Stringfellow, Gerald B.; Williams, Clayton C. | Spatial mapping of ordered and disordered domains of GaInP by near-field scanning optical microscopy and scanning capacitance microscopy | Imaging of topography, locally induced photoluminescence and Fermi-level pinning in adjacent ordered and disordered domains on a cleaved GaInP sample is performed using a near-field scanning optical microscope and scanning capacitance microscope at room temperature in air. Highly localized photolumi... | Gallium Phosphides; Surface Structure; Photoluminescence | 1996-04-13 |
| 442 |
 |
Harrison, Reid R.;Normann, Richard A. | Design and testing of an integrated circuit for multi-electrode neural recording | We have developed a single-chip neural recording system with wireless power delivery and telemetry. The 0.5-μm CMOS IC is designed to be bonded to the back of a 100-channel Utah Electrode Array. A pad near each amplifier allows connection of the chip to the MEMS electrode array. The complete Integr... | recording; Neural recording; Utah Electrode Array; Multielectrode arrays (MEA); Telemetry; Spike detectors; Wireless | 2007-01 |
| 443 |
 |
Furse, Cynthia M. | Teaching and learning combined (TLC) | Most professors have to lean a LOT. Every day, it seems, there IS something that we need that we don't know. So what do you do to lean this new information? Perhaps you hit the Web or the library, find a tutorial, a textbook, or a paper, and give it a little reading time in between a 12:00 class an... | 2003 | |
| 444 |
 |
Stringfellow, Gerald B. | Effect of step structure on ordering in GaInP | Examines the effect of step structure on ordering in gallium indium phosphite (GaInP) using atomic force microscopy. Coverage of the surface by islands several monolayers in height with elongated direction; Formation of the edges of the islands; Role of the observations in explaining the nature of t... | Gallium indium phosphite (GaInP); Twin boundaries | 1995-11-12 |
| 445 |
 |
Mathews, V. John | Adaptive filters requiring zero multiplications | This paper introduces an adaptive filter structure that requires zero multiplications for its implementations. The primary input signals are quantized using DPCM and the DPCM outputs are processed by the adaptive filter. The sign algorithm. We show that if the parameters are chosen properly, hardwar... | 1987 | |
| 446 |
 |
Tasdizen, Tolga | Fast semi-supervised image segmentation by novelty selection | The goal of semi-supervised image segmentation is to obtain the segmentation from a partially labeled image. By utilizing the image manifold structure in labeled and unlabeled pixels, semi-supervised methods propagate the user labeling to the unlabeled data, thus minimizing the need for user labelin... | 2010 | |
| 447 |
 |
Tasdizen, Tolga | Edge enhanced spatio-temporal constrained reconstruction of undersampled dynamic contrast enhanced radial MRI | There are many applications in MRI where it is desirable to have high spatial and high temporal resolution. This can be achieved by undersampling of k-space and requires special techniques for reconstruction. Even if undersampling artifacts are removed, sharpness of the edges can be a problem. We pr... | 2010 | |
| 448 |
 |
Furse, Cynthia M.; Lazzi, Gianluca; Gandhi, Om P. | Comparison of FDTD computed and measured radiation patterns of commercial mobile telephones in presence of the human head | In this letter, finite-difference time-domain (FDTD) computed radiation patterns of mobile telephones are carefully compared with those measured in our laboratory. The question on the capability of the FDTD method to correctly predict the radiated electromagnetic fields of today's structurally comp... | FDTD; Finite-difference time-domain; Mobile antennas | 1998-01-01 |
| 449 |
 |
Mathews, V. John | Sufficient stability bounds for slowly varying direct-form recursive linear filters and their applications in adaptive IIR filters | Abstract-This correspondence derives a sufficient time-varying bound on the maximum variation of the coefficients of an exponentially stable time-varying direct-form homogeneous linear recursive filter. The stability bound is less conservative than all previously derived bounds for time-varying IIR ... | 1999 | |
| 450 |
 |
Furse, Cynthia M. | Enabling wireless communication in aircraft using multipe antenna systems | Sensor technology is advancing to provide the robust, miniaturized sensors needed for aircraft prognostics health management (PHM). Aircraft maintainers would like to add numerous pressure, temperature, vibration, fuel quantity, moisture/chemical sensors, but a major challenge of retrofitting old ai... | 2009-01-01 |