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Creator | Title | Description | Subject | Date |
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Mathews, V. John; Clark, Edward B. | A mathematical basis for the application of the modified geometric method to maximum frequency estimation | Abstract-The application of ultrasound in assessing the fetal cardiovascular system often requires the accurate estimation of maximum blood flow velocity waveforms using Doppler measurements. The modified geometric method estimates the maximum Doppler frequency as the frequency at which the vertica... | | 2004 |
| 2 |
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Ameel, Timothy A; Gale, Bruce K.; Harvey, Ian R. | A three-semester interdisciplinary educational program in microsystems engineering | Motivated by an NSF IGERT grant in the general area of microfluidics, a sequence of three interdisciplinary technical courses has been developed in the emerging area of microsystems engineering. Designed to be taken in series, these courses take students, both graduate and upper-level undergraduates... | | 2004 |
| 3 |
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Christensen, Douglas A.; Horch, Kenneth W. | Accelerated dual-degree BS/MS program - experience with the first three years | We have initiated a pilot program that accelerates the studies of a small group of highly qualified students early in their college careers and allows them to earn both a bachelor's degree and a master's degree in about four years after starting college. It does this by introducing them early to res... | Accelerated dual-degree program | 2004 |
| 4 |
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Horch, Kenneth W.; Lawrence, Steve M.; Dhillon, Gurpreet S. | Acute peripheral nerve recording characteristics of polymer-based longitudinal intrafascicular electrodes | We examined the recording characteristics of two different types of polymer-based longitudinal intrafascicular electrodes (LIFEs) in peripheral nerve: single-stranded (s-polyLIFEs) and multistranded (m-polyLIFEs). Recordings were also made from Pt-Ir wire-based electrodes (PtIrLIFEs) as a control. T... | Sciatic Nerve; Intrafascicular Electrodes, Peripheral Nerve Recording | 2004 |
| 5 |
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Carter, John B. | An O(1) time complexity software barrier | As network latency rapidly approaches thousands of processor cycles and multiprocessors systems become larger and larger, the primary factor in determining a barrier algorithm?s performance is the number of serialized network latencies it requires. All existing barrier algorithms require at least ... | Network latency; Barrier algorithm; Time complexity software barrier | 2004 |
| 6 |
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Liu, Feng | Bending of nanoscale thin Si film induced by growth of Ge islands: hut vs. dome | We perform atomistic simulations to compute bending of freestanding nanoscale thin Si film induced by strained Ge islands. We show that a larger Ge dome island can induce smaller bending than a smaller hut island and explain the surprising experimental observation for growth of Ge islands on pattern... | Bending; Nanoscale thin Si film; Ge islands; Hut islands; Dome islands; Atomistic simulations | 2004 |
| 7 |
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Christensen, Douglas A. | Bringing an integrative modeling experience to a freshman biomedical engineering course | As an integrating lab experience in our Fundamentals of Bioengineering freshman course, we have included a Major Project that ties together many of the principles of biomechanics and bioelectricity covered in the lecture. It uses the human systemic cardiovascular system as a model. During the first... | Matlab | 2004 |
| 8 |
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Myers, Chris J. | CMOS analog map decoder for (8,4) hamming code | Abstract-Design and test results for a fully integrated translinear tail-biting MAP error-control decoder are presented. Decoder designs have been reported for various applications which make use of analog computation, mostly for Viterbi-style decoders. MAP decoders are more complex, and are necess... | | 2004 |
| 9 |
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Hansen, Charles D. | Constrained inverse volume rendering for planetary nebulae | Determining the three-dimensional structure of distant astronomical objects is a challenging task, given that terrestrial observations provide only one viewpoint. For this task, bipolar planetary nebulae are interesting objects of study because of their pronounced axial symmetry due to fundamental p... | Volume rendering; Axial symmetry | 2004 |
| 10 |
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Liu, Feng | Determining the adsorptive and catalytic properties of strained metal surfaces using adsorption-induced stress | We demonstrate a model for determining the adsorptive and catalytic properties of strained metal surfaces based on linear elastic theory, using first-principles calculations of CO adsorption on Au and K surfaces and CO dissociation on Ru surface. The model involves a single calculation of the adsorp... | Strained metal surfaces; Adsorption-induced stress; Adsorptive properties; Catalytic properties | 2004 |
| 11 |
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Stringfellow, Gerald B.; Rieth, Loren W. | Effects of Br and Cl on organometallic vapor phase epitaxial growth and ordering in GaInP | CuPt ordering in GaInP has significant effects on the electrical and optical properties. In fact, band gap reductions as large as 160 meV are potentially useful for devices. Thus, control of ordering is important. This has led to the investigation of surfactants that affect the surface processes d... | Band gap reductions; Surfactants; Surface processes | 2004 |
| 12 |
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Scarpulla, Michael | Effects of pressure on the band structure of highly mismatched Zn1-yMnyOxTe1-x alloys | We report photomodulation spectroscopy measurements of the pressure dependence of the optical transition in Zn12yMnyOxTe1-x alloys that is associated with the lowest Ѓ conduction band (termed E2 subband). The pressure-induced energy shift of the E2 transition is nonlinear and much weaker as compare... | Highly mismatched alloys; Zinc telluride; Anticrossing | 2004 |
| 13 |
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Hansen, Charles D. | Efficient rendering of atmospheric phenomena | Rendering of atmospheric bodies involves modeling the complex interaction of light throughout the highly scattering medium of water and air particles. Scattering by these particles creates many well-known atmospheric optical phenomena including rainbows, halos, the corona, and the glory. Unfortunat... | | 2004 |
| 14 |
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Tiwari, Ashutosh | Electrical transport in ZnO1-δ films: transition from band-gap insulator to Anderson localized insulator | We have thoroughly investigated the effect of oxygen nonstoichiometry on the electrical transport characteristics of ZnO1−δ films. These films were grown on optical grade quartz substrates by using a pulsed laser deposition technique. In order to alter the amount of oxygen nonstoichiometry (δ), ... | Anderson localized insulators | 2004 |
| 15 |
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Normann, Richard A.; Shoham, Shy | Encoding mechanisms for sensory neurons studied with a multielectrode array in the cat dorsal root ganglion | Recent advances in microelectrode array technology now permit a direct examination of the way populations of sensory neurons encode information about a limb's position in space. To address this issue, we recorded nerve impulses from about 100 single units simultaneously in the L6 and L7 dorsal root ... | Sensory; Encoding; Multielectrode; Dorsal Root Ganglion; Cutaneour; Muscle | 2004 |
| 16 |
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Christensen, Douglas A.; Horch, Kenneth W. | Experience with the first three years of an accelerated dual-degree program in biomedical engineering | Our Department of Bioengineering has instituted a pilot program aimed at helping a select group of highly qualified students obtain both bachelor's and master's degrees in an accelerated timeframe-approximately four years from the beginning of their university studies. A key element of this progra... | Accelerated; Dual-degrees; Education | 2004 |
| 17 |
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Eddings, Eric G.; Sarofim, Adel F. | Experimental study of burning rate in jet-fuel pool fires | Experiments were carried out in a 30 cm diameter pool fire, for both transient and steady-state conditions, utilizing jet fuel, Norpar-15, and a surrogate mixture of hydrocarbons that simulates jet-fuel behavior in a pool fire. Steady state pool fire tests match previous results well. The transient ... | Pool fires; Jet propulsion fuel; Norpar-15 | 2004 |
| 18 |
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Freire, Juliana | Flexible infrastructure for gathering XML statistics and estimating query cardinality | A key component of XML data management systems is the result size estimator, which estimates the cardinalities of user queries. Estimated cardinalities are needed in a variety of tasks, including query optimization and cost-based storage design; and they can also be used to give users early feedba... | Query cardinality; StatiX++; XML schema | 2004 |
| 19 |
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Tasdizen, Tolga; Whitaker, Ross T. | Higher-order nonlinear priors for surface reconstruction | Abstract-For surface reconstruction problems with noisy and incomplete range data, a Bayesian estimation approach can improve the overall quality of the surfaces. The Bayesian approach to surface estimation relies on a likelihood term, which ties the surface estimate to the input data, and the prior... | | 2004 |
| 20 |
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Awate, Suyash P.; Whitaker, Ross T. | Image denoising with unsupervised, information-theoretic, adaptive filtering | The problem of denoising images is one of the most important and widely studied problems in image processing and computer vision. Various image filtering strategies based on linear systems, statistics, information theory, and variational calculus, have been effective, but invariably make strong a... | Image denoising | 2004 |
| 21 |
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Hansen, Charles D.; Shirley, Peter S. | Interactive caustics using local precomputed irradiance | Bright patterns of light focused via reflective or refractive objects onto matte surfaces are called "caustics". We present a method for rendering dynamic scenes with moving caustics at interactive rates. This technique requires some simplifying assumptions about caustic behavior allowing us to co... | Illumination | 2004 |
| 22 |
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Riloff, Ellen M. | Introduction to the Sundance and AutoSlog systems | This document describes the Sundance natural language processing system that has been developed at the University of Utah, as well as the AutoSlog and AutoSlog-TS extraction pattern learners that have been implemented on top of Sundance. Sundance is a shallow parser that also includes clause handlin... | Autoslog system; Sundance system; Extraction pattern learners; Learning algorithms | 2004 |
| 23 |
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Sarofim, Adel F.; Truong, Thanh | Kinetics of hydrogen abstraction reactions from polycyclic aromatic hydrocarbons by H atoms | An application of the Reaction Class Transition State Theory/Linear Energy Relationship (RC-TST/LER) is presented for the evaluation of the thermal rate constants of hydrogen abstraction reactions by H atoms from Polycyclic Aromatic Hydrocarbons (PAH). Two classes of reactions have been considered, ... | Reaction Class Transition State Theory; Linear Energy Relationship; Hydrogen abstraction reactions | 2004 |
| 24 |
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Mathews, V. John; Clark, Edward B. | Mean frequency estimation of narrowband signals | Abstract-This letter shows that the single frequency approximation for a narrowband lowpass signal embedded in white noise using the Pisarenko harmonic decomposition algorithm is approximately the power-weighted mean frequency of the signal. Experimental results indicate that this method is superio... | | 2004 |
| 25 |
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Parker, Steven G. | Memory-savvy distributed interactive ray tracing | Interactive ray tracing in a cluster environment requires paying close attention to the constraints of a loosely coupled distributed system. To render large scenes interactively, memory limits and network latency must be addressed efficiently. In this paper, we improve previous systems by moving to ... | | 2004 |
