UScholar Works
 
Filters: Collection:"ir_uspace"
126 - 150 of 229
Number of results to display per page
CreatorTitleDescriptionSubjectDate
126Groth, Cori AnnSix factors of successful school improvement: blueprint for reform or process for continual school improvement?The last two decades have brought considerable attention to schoolwide improvements intended to raise student achievement-particularly in the area of literacy. In response to the emphasis on improved student achievement, many promising programs for school improvement have emerged. These programs, ...Schools; Student achievement; Literacy2000
127O'Rourke, Dennis H.Spatial and temporal stability of mtDNA haplogroup frequencies in native North AmericaMitochondrial DNA lineage frequencies in prehistoric Aleut, eastern Utah Fremont, Southwestern Anasazi, Pyramid Lake, and Stillwater Marsh skeletal samples from northwest Nevada and the Oneota of western Illinois are compared with those in 41 contemporary aboriginal populations of North America. T...Mitochondrial DNA; Lineage variation; Haplogroup assignment2000
128Vardeny, Zeev ValentineSpectral analysis of polymer microring lasersThe emission spectra of microring lasers made of p-conjugated polymer films that coat glass optical fibers are analyzed with the help of a Fourier transform. This method allows for the assignment of photopumped emission lines to integral Bessel functions and a more precise determination of the lase...Microring lasers; pi-conjugated polymers2000
129Smith, Philip J.State space sensitivity to a prescribed probability density function shape in coal combustion systems: joint β-PDF versus clipped Gaussian PDFThe turbulent transport of three coal off-gas mixture fractions is coupled to a prescribed joint //-probability- density-function (//-PDF) mixing model. This physical transport and subgrid joint //-PDF mixing model is used to explore the incorporation of coal off-gas compositional disparities betwe...Off-gas stream; β-PDF; Char oxidation2000
130Weinstein, DavidStatistical analysis for FEM EEG source localization in realistic head modelsEstimating the location and distribution of electric current sources within the brain from electroencephalographic (EEG) recordings is an ill-posed inverse problem. The ill-posed nature of the inverse EEG problem is due to the lack of a unique solution such that different configurations of sources c...inverse EEG problem; FEM EEG; source localization2000
131Miller, Joel StevenStructure and magnetic properties of meso-tetrakis(2,4,6-trimethylphenyl)porphyrinatomanganese(III) 7,7,8,8-tetracyano 2,5-dimethyl-p-quinodimethanide with a 2.3 K Tc. The first example of cis-coordination of a tetracyano-p-quinodimethanideThe crystal structure of meso-tetrakis(2,4,6-trimethylphenyl)porphyrinatomanganese(III) 7,7,8,8-tetracyano-2,5-dimethyl-p-quinodimethanide, [MnTMesP][DMTCNQ]-2p-C6H4Me2 provides the first example of a cis-1,2-u-coordination motif having an infinite zigzag chain structure. [MnTMesP][DMTCNQ]-2p-C6H4Me...Magnets; Interactions; Coupling2000
132Stringfellow, Gerald B.Surfactant controlled growth of GaInP by organometallic vapor phase epitaxyThe effect of the surfactant Sb has been studied for GaInP semiconductor alloys grown by organometallic vapor phase epitaxy. Dramatic changes in the optical and electrical properties of GaInP with CuPt ordering have been observed. A small concentration of triethylantimony TESb in the vapor is fou...Semiconductors; Surface active agents2000
133Miller, Joel Steven; Liao, YiSynthesis and structure of an asymmetric copper(I) dimer with two-coordinate and four-coordinate copper(I) sitesCopper(I) coordination compounds have been studied intensively due to their biological relevance, catalytic properties, and theoretical interests. Numerous mononuclear and polynuclear copper(I) complexes with different coordination numbers have been prepared and characterized. Recently the possible ...Polynuclear; Nitrogens; Electrons2000
134Bedrov, Dmitro; Smith, Grant D.Temperature dependent shear viscosity coefficient of octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX ): a molecular dynamics simulation studyEquilibrium molecular dynamics methods were used in conjunction with linear response theory and a recently published potential-energy surface [J. Phys. Chem. B 103, 3570 (1999)] to compute the liquid shear viscosity and self-diffusion coefficient of the high explosive HMX (octahydro-1,3,5,7-tetran...Polymer melts; HMX; Shear viscosity coefficient; Plastic-bonded explosives2000
135Broughton, JohnTerminal Pleistocene fish remains from Homestead Cave, Utah, and implications for fish biogeography in the Bonneville BasinEleven fish species were identified from Homestead Cave, Utah. The remains, concentrated in the lowest stratum of the deposit, were accumulated by owls between approximately 11,200 and 10,100 14C yr B.P. and likely represent fish associated with the final die-off of the Lake Bonneville fauna. Fou...Fish assemblage; Quaternary; Lake Bonneville2000
136Clayton, Dale H.Testing species limits of non-echolocating Philippine swiftlets (Collocalia spp.) using molecular genetic dataSwiftlets are small, insectivorous birds that are distributed from the Indian Ocean, through southeast Asia and north Australia, to the Pacific. About 22 species of swiflets nest in caves or other dark places, where they navigate using a crude form of echolocation (Chantler and Driessens 1995). Thr...2000
137Wight, Charles AlbertThermal analysis of high explosives: liquid state decomposition of RDXNonisothermal thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) have been applied to the thermal decomposition of RDX. Model-free isoconversional analysis of TGA and DSC traces show that RDX primarily evaporates in an open pan with an activation energy of Eα -100 kJ ...RDX; Plastic explosives; Decomposition; Thermogravimetric analysis; Differential scanning calorimetry2000
138Bedrov, Dmitro; Smith, Grant D.Thermal conductivity of molecular fluids from molecular dynamics simulations: application of a new imposed-flux methodWe have applied a new nonequilibrium molecular dynamics (NEMD) method [F. Müller-Plathe, J. Chem. Phys. 106, 6082 (1997)] previously applied to monatomic Lennard-Jones fluids in the determination of the thermal conductivity of molecular fluids. The method was modified in order to be applicable to...Thermal conductivity; Molecular fluids; Heat flux; Imposed-flux NEMD method2000
139Truong, ThanhThermal rate constants of the NO2 fission reaction of gas phase ?-HMX: a direct ab initio dynamics studyThe NO2 fission reaction of gas phase ?-HMX has been studied using a direct ab initio method within the framework of microcanonical variational transition state theory (?VT). The potential energy calculations were calculated using the hybrid nonlocal B3LYP density functional theory with the cc-pVDZ ...HMX; Fission reaction; Thermal rate constants; Microcanonical variational transition state theory2000
140Miller, Joel StevenThree-dimensional network-structured cyanide-based magnetsIntroduction Magnets based on metal oxides have been important for hundreds of years. Magnetite, Fe3O4, Co-doped (y)-Fe2O3, and CrO2 are important examples. The oxide (O2-) bridge between the magnetic metal ions has filled p orbitals (Figure 1a) that provide the pathway for strong spin coup...Magnetic; Ferrimagnetic; Magnetization2000
141Martin, JimTime course of learning to produce maximum cycling powerThe purpose of this investigation was to determine the time course and magnitude of learning effects associated with repeated maximum cycling power tests and to determine if cycle-trained men exhibit different learning effects than active men who are not cycle-trained. Cycle-trained (N = 13) and act...Training; Pedaling; Cycle-trained2000
142Myers, Chris J.Timed state space exploration using POSETsAbstract-This paper presents a new timing analysis algorithm for efficient state space exploration during the synthesis of timed circuits or the verification of timed systems. The source of the computational complexity in the synthesis or verification of a timed system is in finding the reachable ti...2000
143Stevens, KennethTotal ionizing dose characterization of a commercially fabricated asynchronous FFT for space applicationsThe total ionizing dose characterization of the radiation-hardened implementation of a novel architecture for high-performance, energy efficiency FFT engines is presented. Simulations and test chip measurement results indicate that a radiation-tolerant 1024-point FFT based on this architecture will...2000
144Goller, FranzTracheal length changes and upper vocal tract resonances during zebra finch songUpper vocal tract resonances in singing birds could be modified by beak opening, laryngeal adjustments and tracheal length changes.Sonomicrometry; Syringeal; Tracheal shortening2000
145Gopalakrishnan, GaneshTransaction ordering verification of the PCI 2.1 protocol using trace inclusion refinementWe define an abstract model of PCI, called PCIA, and show that PCI is a refinement of PCIA based on tract inclusion. We then show that no traces of PCIA violate the Producer/Consumer property using the mur? explicit state ennumeration model checker. Given that PCIA does not violate the Producer/Cons...PCI; PCIA; tract inclusion2000
146Flynn, John J.Tribute: Daniel J. Dykstra: the Utah Years 1949-1965It is with humility and trepidation that I rise to recount Dan Dykstra's years as a teacher, leader, and friend of the University of Utah, its College of Law, his Utah colleagues, and his Utah students. Humility because there are those with us today who are better able to recall those years like his...Memorial service; Essay; Law, faculty2000
147De St Germain, John Davison; Parker, Steven G.; Johnson, Christopher R.Uintah: a massively parallel problem solving environmentThis paper describes Uintah, a component-based visual problem solving environment (PSE) that is designed to specifically address the unique problems of massively parallel computation on terascale computing platforms. Uintah supports the entire life cycle of scientific applications by allowing scient...Uintah; Problem solving environment; Computational steering; Parallel computers2000
148Zhang, LixinURSIM reference manualSimulation has emerged as an important method for evaluating new ideas in both uniprocessor and multiprocessor architecture. Compared to building real hardware, simulation provides at least two advantages. First, it provides the flexibility to modify various architectural parameters and components a...URSIM; reference manual2000
149Stark, Michael M.Vertex-Based formulations of Irradiance from polygonal sourcesIrradiance at a point on a receiver due to a uniformly emitting polygon luminaire, or equivalently, the differential area to polygon form factor, is of fundamental interest in computer graphics. An elegant closed-form expression attributed to Lambert, dating from the 18th century, is the most common...Vertex; Irradiance; polygon luminaire; computer graphics2000
150Sperry, John S.Vulnerability to xylem cavitation and the distribution of sonoran desert vegetationWe studied 15 riparian and upland Sonoran desert species to evaluate how the limitation of xylem pressure (Vx) by cavitation corresponded with plant distribution along a moisture gradient. Riparian species were obligate riparian trees (Fraxinus velutina, Populus fremontii, and Salix gooddingii), nat...Comparative approach; species distribution; xylem conducting efficency2000
126 - 150 of 229