UScholar Works
 
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CreatorTitleDescriptionSubjectDate
176Vardeny, Zeev Valentine; Raikh, Mikhail E.Mesoscopic cooperative emission from a disordered systemWe study theoretically the cooperative light emission from a system of N»1 classical oscillators confined within a volume with spatial scale L much smaller than the radiation wavelength λο=2rrc/ω0. We assume that the oscillator frequencies are randomly distributed around a central frequency ω...Mesoscopic cooperative emission; Disordered systems; Oscillators2000-05
177Landesman, Margaret M.Millenium minutes (comment)In 1969, I left grad school and a job at the Stanford Library and followed my almost-husband to the University of Utah, where I became Head of the Library of Congress Card Order Section, a "Sub-professional." (The more sensitive librarians referred to us as "Para-professionals.") As at Stanford, we ...Librarianship; Librarians2000-12
178Scarpulla, MichaelNew methodologies for measuring film thickness, coverage, and topographyWe describe how the techniques of X-ray reflectivity (XRR), electron spectroscopy for chemical analysis (ESCA), and atomic force microscopy (AFM) can be used to obtain the structural parameters-thickness, coverage, and topography-of thin films used on magnetic recording disks. We focus on ultra-thi...Atomic force microscopy; Electron spectroscopy for chemical analysis; X-ray reflectivity2000-01
179Mishchenko, EugeneNonlinear voltage dependence of the shot noise in mesoscopic degenerate conductors with strong electron-electron scatteringIt is shown that measurements of zero-frequency shot noise can provide information on electron-electron interaction, because the strong interaction results in the nonlinear voltage dependence of the shot noise in metallic wires. This is due to the fact that the Wiedemann-Franz law is no longer vali...Shot noise; Degenerate conductors2000-11
180Olson, Randall J.; Pingree, Michael F.; Lundergan, Maureen K.Penetrating keratoplasty for keratoconus: a long-term review of results and complicationsPURPOSE: To study the long-term complications of penetrating keratoplasty (PKP) to evaluate current recommendations to patients with keratoconus. SETTING: John Moran Eye Center, University of Utah, Salt Lake City, Utah, USA. METHODS: Retrospective study of all PKP procedures for keratoconus performe...Visual Acuity; Refraction, Ocular; Keratoconus; Astigmatism2000-07
181Olson, Randall J.; Mamalis, Nick; Spencer, Terrence S.Postoperative sterile endophthalmitis (TASS) associated with the memorylensPURPOSE: To report 10 cases of delayed-onset acute intraocular inflammation following cataract extraction and posterior chamber implantation of the MemoryLens(R) intraocular lens (IOL). SETTING: John A. Moran Eye Center, Department of Ophthalmology, University of Utah, Salt Lake City, Utah, USA. MET...Memory Lens; Toxic Anterior Segment Syndrome; Retrospective Studies; adverse effects2000-12
182DeTar, CarletonPotts flux tube model at nonzero chemical potentialWe model the deconfinement phase transition in quantum chromodynamics at nonzero baryon number density and large quark mass by extending the flux tube model ~three-state, three-dimensional Potts model! to nonzero chemical potential. In a direct numerical simulation we confirm mean-field-theory pre...Phase transitions; Quark-gluon plasma; Chemical potential; Potts model2000-03
183Christensen, Douglas A.; Furse, Cynthia M.Problem and treatment of DC offsets in FDTD simulationsThis paper discusses the causes of and some solutions to the commonly observed problem of dc field offsets in finite-difference time-domain (FDTD) simulations. DC electric and magnetic field offsets are shown to be valid calculated responses of the modeled systems, resulting from interaction betwee...Finite-difference time-domain method; Direct current offsets; Waveforms2000-08
184Furse, Cynthia M.Prof. James R. wait and mining production technology--an appreciationProf. James R. Wait examined electromagnetic (EM) wave propagation in many situations of interest to mining production, including propagation in tunnels, propagation along extended conductors such as cables and drill stems, and propagation in coal seams. This work remains relevant, both to the mini...James R. Wait; Electromagnetic wave propagation; Geologic measurements; Mining industry2000-09
185Gondolo, PaoloPrompt atmospheric neutrinos and muons: dependence on the gluon distribution functionWe compute the next-to-leading order QCD predictions for the vertical flux of atmospheric muons and neutrinos from decays of charmed particles, for different PDF's (MRS-R1, MRS-R2, CTEQ-4M and MRST) and different extrapolations of these at a small partonic momentum fraction x. We find that the predi...Neutrino telescopes; Charm; Atmospheric flux; Prompt flux2000-02
186Gondolo, PaoloPrompt atmospheric neutrinos and muons: NLO vs LO QCD predictionsWe compare the leading and next-to-leading order QCD predictions for the flux of atmospheric muons and neutrinos from decays of charmed particles. We find that the full NLO lepton fluxes can be approximated to within ~10% by the Born-level fluxes multiplied by an overall factor of 2.2-2.4, which d...Atmospheric flux; Prompt flux; Charm2000-01
187Research in brief: Spring 2000Summaries of Selected Research Projects at the University of Utah Health Sciences CenterResearch: School of Medicine, College of Pharmacy;, College of Nursing, College of Health2000-03
188Wu, Yong-ShiResonant above-threshold ionization at quantized laser intensitiesWe argue that quantum electrodynamics dictates resonance phenomena in multiphoton processes as the laser intensity varies. A perturbation theory is developed in which the coupling between an electron and the second quantized laser mode is treated nonperturbatively. As an example, we predict that th...Laser field; Volkov states2000-03
189Wu, Yong-Shi; Raikh, Mikhail E.Role of spin-orbit coupling in the metal-insulator transition in two-dimensional systemsWe propose an experiment, which would allow us to pinpoint the role of spin-orbit coupling in the metal-nonmetal transition observed in a number of two-dimensional systems at low densities. Namely, we demonstrate that in a parallel magnetic field the interplay between the spin-orbit coupling and the...Spin-orbit coupling; Metal-insulator transitions2000-04
190DeTar, CarletonScaling and eigenmode tests of the improved fat clover actionWe test a recently proposed improved lattice-fermion action, the fat link clover action, examining indicators of pathological small-quark-mass lattice artifacts (‘‘exceptional configurations'') on quenched lattices of spacing 0.12 fm and studying scaling properties of the light hadron spectrum ...Clover actions; Wilson actions2000-12
191DeTar, CarletonScaling tests of the improved Kogut-Susskind quark actionImproved lattice actions for Kogut-Susskind quarks have been shown to improve rotational symmetry and flavor symmetry. In this work we find improved scaling behavior of the r and nucleon masses expressed in units of a length scale obtained from the static quark potential, and better behavior of the ...Instantons; Static potential2000-04
192DeTar, CarletonSemileptonic decays of heavy mesons with the fat clover actionWe are studying a variety of semileptonic decays of heavy-light mesons in an effort to improve the determination of the heavy-quark Standard-Model CKM matrix elements. Our fermion action is a novel, improved "fat" clover action that promises to reduce problems with exceptional configurations. Dynami...Semileptonic decay; Decay constants; Staggered quarks; Fat-clover valence quarks2000-04
193Varner, Michael W.Serial salivary estriol to detect an increased risk of preterm birth.OBJECTIVE: To evaluate serial measurements of salivary estriol (E3) to detect increased risk of spontaneous preterm labor and preterm birth. METHODS: A masked, prospective, multicenter trial of 956 women with singleton pregnancies was completed at eight United States medical centers. Saliva was coll...Estriol; Preterm Birth; Spontaneous Preterm Labor2000-10
194DeTar, CarletonStatic quark potential in three flavor QCDWe study the effects of dynamical quarks on the static quark potential at distances shorter than those where string breaking is expected. Quenched calculations and calculations with three flavors of dynamical quarks are done on sets of lattices with the lattice spacings matched within about one pe...Dynamical quarks; Antiquarks; Static potential2000-07
195Liu, FengThermal roughening of a thin film: a new type of roughening transitionThe equilibrium thermal roughening of thin Ge layers (one and two monolayers) deposited on Si(001) has been investigated with low-energy electron microscopy. A Ge-coverage-dependent roughening is observed. For two monolayers, the temperature at which imaging contrast is lost due to surface roughness...Thermal roughening; Roughening transition; Heteroepitaxial growth2000-09
196Vardeny, Zeev ValentineUltrafast spectroscopy of even-parity states in ∏-conjugated polymersRelaxation dynamics of even parity (Ag) states in poly(p-phenylene vinylene) derivatives are studied using a novel fsec transient spectroscopy, in which two different excitation pulses successively generate odd parity (1 1Bµ) excitons at 2.2 eV and then reexcite them to higher Ag states. For reexci...pi-conjugated polymers; Ultrafast spectroscopy; PPV; Relaxation dynamics2000-09
197Liu, FengUnique dynamic appearance of a Ge-Si Ad-dimer on Si(001)We carry out a comparative study of the energetics and dynamics of Si-Si, Ge-Ge, and Ge-Si ad-dimers on top of a dimer row in the Si(001) surface, using first-principles calculations. The dynamic appearance of a Ge-Si dimer is distinctively different from that of a Si-Si or Ge-Ge dimer, providing a ...Ge-Si Ad-dimer; Si(001); First-principles calculations; Energetics2000-12
198Olson, Randall J.Update on a long-term, prospective study of capsulotomy and retinal detachment rates after cataract surgeryPURPOSE: To evaluate the retinal detachment risks and neodymium:YAG (Nd:YAG) capsulotomy rates associated with different cataract approaches and intraocular lens (IOL) styles in a long-term,prospective clinical study. SETTING: Clinical practice of 1 ophthalmologist, Fort Collins, Colorado, USA. METH...Cataract Extraction; Laser Therapy; Retinal Detachment; Risk Factors2000-07
199Sample, SusanUsing Weight to Control the UncontrollableBulimic behavior? Jane M. Blackwell, Ph.D., remembers how people would wrinkle their foreheads when she used the phrase in lectures 15 years ago. "Now it's a household word. "We thought bulimia would be gone, that it was a fad," said the clinical psychologist, who first held a therapy sess...Eating Disorders; Body Image; Serotonin2000-03
200Olson, Randall J.Wound complications associated with incision enlargement for foldable intraocular lens implantation during cataract surgeryPURPOSE: To determine the relationship between various intraocular lens (IOL) types and the incidence of unwanted light images. SETTING: The Moran Eye Center, University of Utah, Salt Lake City, Utah, USA. METHODS: A telephone questionnaire was administered to 302 postoperative patients who had rece...Cararact Surgery; Incision Enlargement; Wound Complications; Vision Disorders2000-06
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