Filters: Collection:"ir_uspace"
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 126 |  | De St Germain, John Davison; Parker, Steven G.; Johnson, Christopher R. | Uintah parallelism infrastructure: a performance evaluation on the SGI origin 2000 | Uintah is a component-based visual problem solving environment (PSE) designed to specifically address the unique problems inherent in running massively parallel scientific computations on terascale computing platforms. In particular, development of the Uintah system is part of the C-SAFE [2] effort ... | Uintah; Problem solving environment; Performance analysis; Parallelism; Origin 2000; C-SAFE | 2001 |
| 127 |  | Newman, Lex | Unmasking Descartes's case for the bete machine doctrine | Among the more notorious of Cartesian doctrines is the bete machine doctrine -- the view that brute animals lack not only reason, but any form of consciousness (having no mind or soul). Recent English commentaries have served to obscure, rather than to clarify, the historical Descartes's views, Stan... | Animals; Intelligence; Soul; Mechanical causation | 2001 |
| 128 |  | Couldwell, William T. | Use of cylindrical titanium mesh and locking plates in anterior cervical fusion | After performing anterior cervical corpectomy or discectomy for cervical spondolytic myelopathy or radiculopathy, iliac crest bone graft and fibular auto- or allograft is often used to achieve arthrodesis in the cervical spine. The purpose of this study was to evaluate the use of a cylindrical titan... | Anterior cervical fusion; Arthrodesis; Cylindrical titanium mesh; Lordosis; Kyphosis | 2001 |
| 129 |  | Malloy, Thomas E.; Jensen, Gary C. | Utah Virtual Lab: JAVA interactivity for teaching science and statistics online | The Utah on-line Virtual Lab is a JAVA program run dynamically off a database. It is embedded in Stat-Center (www.psych.utah.edu/ learn/statsampler.html), an on-line collection of tools and text for teaching and learning statistics. Instructors author a statistical virtual reality that simulates the... | Computer simulations; Science; Statistics | 2001 |
| 130 |  | Dailey, Andrew T.; Moore, Kevin R. | Value of MR neurography for evaluating extraspinal neuropathic leg pain: a pictorial essay | Summary: Fifteen patients with neuropathic leg pain referable to the lumbosacral plexus or sciatic nerve underwent high-resolution MR neurography. Thirteen of the patients also underwent routine MR imaging of the lumbar segments of the spinal cord before undergoing MR neurography. Using phased-array... | MR neurography; Neuropathic leg pain; Extraspinal; Lumbosacral plexus | 2001 |
| 131 |  | Van Uitert, Robert; Weinstein, David; Johnson, Christopher R. | Volume currents in forward and inverse MEG simulations using realistic head models | Many magnetoencephalography (MEG) forward and inverse simulation models employ spheres, a singular shape which does not require consideration of volume currents. With more realistic, inhomogenous, anisotropic, non-spherical head models, volume currents cannot be ignored. We verify the accuracy of ... | Forward MEG, Inverse MEG, Source localization, Volume currents, Finite element method | 2001 |
| 132 |  | Hansen, Charles D. | Wavelet representation of contour sets | We present a new wavelet compression and multiresolution modeling approach for sets of contours (level sets). In contrast to previous wavelet schemes, our algorithm creates a parametrization of a scalar field induced by its contours and compactly stores this parametrization rather than function valu... | Contours; Geometry compression; Isosurfaces; Level sets; Multiresolution methods; Wavelets | 2001 |
| 133 |  | Caserta, Michael; Lund, Dale A. | When the unexpected happens: husbands coping with the deaths of their wives | Most husbands do not outlive their wives. The 1990 Census of the United States reveals that while nearly 49 percent of women are widowed after age sixty-five only 14 percent of the men are widowed. After age eighty-five the rates of widowhood increase for both men and women. About 80 percent of thes... | 2001 | |
| 134 |  | Zimmer, Zachary | Whose education counts? The impact of grown children's education on the physical functioning of their parents in Tawian | Research has identified education as an important predictor of physical functioning in old age. Older adults in Taiwan tend to experience close ties to family members and high rates of adult child coresidence, much more so than is typical in Western cultures. These circumstances might imply addition... | Grown children; Physical functioning; Education | 2001 |
| 135 |  | Riloff, Ellen M. | Analyses for elucidating current question answering technology | In this paper, we take a detailed look at the performance of components of an idealized question answering system on two diff erent tasks: the TREC Question Answering task and a set of reading comprehension exams. We carry out three types of analysis: inherent properties of the data, feature analys... | TREC Question Answering task | 2001-12 |
| 136 |  | Vardeny, Zeev Valentine; Raikh, Mikhail E. | Anomalous coherent backscattering of light from opal photonic crystals | We studied coherent backscattering (CBS) of light from opal photonic crystals with incomplete band gaps. We observed a dramatic broadening of the CBS cone for incident angles close to the Bragg condition in the crystals. We modify the conventional CBS theory to incorporate Bragg attenuation resultin... | Coherent backscattering; Bragg condition | 2001-05 |
| 137 |  | McElreath, Richard | Can females gain additional paternal investment by mating with multiple males? a game theoretic approach | Although females may require only one mating to become inseminated, many female animals engage in costly mating with multiple males. One potential benefit of polyandrous mating is gaining parental investment from multiple males. We developed two game theoretic models to explore this possibility. Our... | Female multiple mating; Polyandry; Nonprocreative mating; Paternal investment; Mating benefits; Mating strategy | 2001-11 |
| 138 |  | Wu, Yong-Shi | Characterization of one-dimensional Luttinger liquids in terms of fractional exclusion statistics | We develop a bosonization approach to study the low temperature properties of one-dimensional gas of particles obeying fractional exclusion statistics (FES). It is shown that such ideal gas reproduces the low-energy excitations and asymptotic exponents of a one-component Luttinger liquid (with no in... | 2001-06 | |
| 139 |  | Harrison, Reid R. | CMOS programmable analog memory-cell array using floating-gate circuits | The complexity of analog VLSI systems is often limited by the number of pins on a chip rather than by the die area. Currently, many analog parameters and biases are stored off-chip. Moving parameter storage on-chip could save pins and allow us to create complex programmable analog systems. In this ... | Computer chips; VLSI; Computer memory; Potentiometers; CMOS circuits; Floating gate circuit | 2001-01 |
| 140 |  | Vardeny, Zeev Valentine | Coherent umklapp scattering of light from disordered photonic crystals | A theoretical study of the coherent light scattering from disordered photonic crystals is presented. In addition to the conventional enhancement of the reflected light intensity into the backscattering direction, the so-called coherent backscattering (CBS), the periodic modulation of the dielectri... | Coherent umklapp scattering; Disordered photonic crystals; Coherent backscattering; Bragg | 2001-05 |
| 141 |  | Olson, Randall J. | Comparison of patient satisfaction after uncomplicated cataract surgery between the silicone AMO SI-30/40 and the acrylic Alcon MA30BA and MA60BA foldable intraocular lenses | PURPOSE: To compare patient satisfaction with vision 12 months after implantation of a silicone or acrylic foldable intraocular lens (IOL). SETTING: John A. Moran Eye Center, University of Utah Medical Center, Salt Lake City, Utah, USA. METHODS: Selection criteria included patients who had uneventfu... | Patient Satisfaction; Lenses, Intraocular; Silicone Elastomers; Biocompatible Materials | 2001-10 |
| 142 |  | Digre, Kathleen B.; Schmidt, Richard H.; Osborne, Anne G.; Patel, Bhupendra C.; Pratt, David; Rietz, Lisa A. | Compressive optic neuropathy caused by renal osteodystrophy. Case report. | Compressive optic neuropathy with acute or chronic vision loss has been associated with various skull base tumors, aneurysms, Graves disease, trauma, and, less commonly, fibrous dysplasia and osteopetrosis. The Author's present a case of acute visual deterioration in a 25-year-old woman who had mass... | Optic Neuropathy; Optic Nerve Decompression; Renal Osteodystrophy | 2001-10 |
| 143 |  | Lupton, John Mark | Control of mobility in molecular organic semiconductors by dendrimer generation | Conjugated dendrimers are of interest as novel materials for light-emitting diodes. They consist of a luminescent chromophore at the core with highly branched conjugated dendron sidegroups. In these materials, light emission occurs from the core and is independent of generation. The dendron branchin... | Dendrimer generation; Dendron branching; Charge transport; Mobility | 2001-03 |
| 144 |  | Vardeny, Zeev Valentine | Excitation dynamics in single molecular crystals of α-hexathiophene from femtosecond to millisecond | We identify odd- and even-parity states and measure transient photomodulation spectra of Frenkel excitons in a-hexathiophene single crystals. The lowest Frenkel excitons are characterized by a stimulated emission band at ~2 eV and an absorption band at 1.3 eV. Intramolecular internal conversion go... | Excitation dynamics; alpha-hexathiophene; Frenkel excitons; pi-conjugated polymers; Photoexcitation | 2001-04 |
| 145 |  | Vardeny, Zeev Valentine; Raikh, Mikhail E. | Excitations in photonic crystals infiltrated with polarizable media | Light propagation in a photonic crystal with incomplete band gap, infiltrated with polarizable molecules is considered. We demonstrate that the interplay between the spatial dispersion caused by Bragg diffraction and polaritonic frequency dispersion gives rise to alternative propagating excitation... | Polarizable media; Light propagation; Bragg diffraction; Excitations | 2001-06 |
| 146 |  | DeTar, Carleton | f B for various actions: approaching the continuum limit with dynamical fermions | We present results for pseudoscalar decay constants of heavy-light mesons using both quenched and Nf = 2 dynamical fermion configurations. A variety of fermion actions is investigated: Wilson, nonperturbative clover, and fat-link clover. For heavy quarks the Fermilab formalism is applied. In the q... | Decay constants; Wilson fermions | 2001-03 |
| 147 |  | Mishchenko, Eugene | Frequency dependence of the photonic noise spectrum in an absorbing or amplifying diffusive medium | A theory is presented for the frequency dependence of the power spectrum of photon current fluctuations originating from a disordered medium. Both the cases of an absorbing medium ("grey body") and of an amplifying medium ("random laser") are considered in a waveguide geometry. The semiclassical ap... | Random laser; Noise power spectrum; Frequency dependence; Waveguide geometry | 2001-01 |
| 148 |  | Mishchenko, Eugene | Full counting statistics of a charge pump in the Coulomb blockade regime | We study full charge counting statistics (FCCS) of a charge pump based on a nearly open single electron transistor. The problem is mapped onto an exactly soluble problem of a nonequilibrium g=1/2 Luttinger liquid with an impurity. We obtain an analytic expression for the generating function of the... | Counting statistics; Luttinger liquid | 2001-11 |
| 149 |  | Voth, Gregory Alan | Further developments in the local-orbital density-functional-theory tight-binding method | Quantum-mechanical methods have become increasingly reliable as a complementary tool to experimental research. A variety of methods exist ranging in complexity from semiempirical methods to density-functional-theory (DFT) methods [using either the local-density approximation (LDA) or the generalize... | Sankey-Niklewaki method; Fireball method; Pseudopotential; Exchange-correlation interactions; Gallium nitride; H20 dimer; Copper; gas-phase HMX | 2001-10 |
| 150 |  | Olson, Randall J. | Glistenings with long-term follow-up of the Surgidev B20/20 polymethylmethacrylate intraocular lens | PURPOSE: To compare patient satisfaction with vision 12 months after implantation of a silicone or acrylic foldable intraocular lens (IOL). SETTING: John A. Moran Eye Center, University of Utah Medical Center, Salt Lake City, Utah, USA. METHODS: Selection criteria included patients who had uneventfu... | Phacoemulsification; Lens Implantation, Intraocular; Glare | 2001-10 |