Physical Sciences and Mathematics Commons^™

Using Multiple Statistical Prototypes To Classify Continuously Valued Data, Tony R. Martinez, Dan A. Ventura

Faculty Publications

Multiple Statistical Prototypes (MSP) is a modification of a standard minimum distance classification scheme that generates muItiple prototypes per class using a modified greedy heuristic. Empirical comparison of MSP with other well-known learning algorithms shows MSP to be a robust algorithm that uses a very simple premise to produce good generalization and achieve parsimonious hypothesis representation.

Waterjet Cutting Of Cross-Linked Glass, Fang Yuan, John A. Johnson, David D. Allred, Robert H. Todd

Faculty Publications

The cutting of cross-linked glasses such as silica and Corning 7059 can be difficult. We conducted an experimental study to determine the feasibility of using a high-speed waterjet to cut thin Corning 7095 glass. Cutting using either pure de-ionized high pressure water at 380 MPa (55 000 psi) or de-ionized water with entrained garnet abrasive was studied. The roughness of the cut surfaces was measured and compared. Photomicrographs were taken of glass examples cut at different traversing rates with pure water and with the abrasive entrained waterjet. Comparative studies of cutting with and without the entrained abrasive material showed that …

Xenon 147-Nm Resonance Ƒ Value And Trapped Decay Rates, H. M. Anderson, Scott D. Bergeson, D. A. Doughty, J. E. Lawler

Faculty Publications

The absorption oscillator strength of the xenon 147-nm resonance transition is measured to be 0.264±0.016. This value is from direct absorption measurements with equivalent widths from ≈ 1 to ≈ 10 cm-1. This ƒ-value measurement is compared to others in the literature and is used in Monte Carlo simulations of trapped decay rates. The simulations include an angle-dependent partial frequency redistribution. The simulation results are compared to trapped decay rates in the literature.

Detection Of Dityrosine In Apoferritin, Stephen E. Bialkowski

Stephen E. Bialkowski

Laser-excited fluorescence spectroscopy was adopted for dityrosine detection in horse spleen apoferritin. Dityrosine was identified in horse spleen apoferritin. Fractionation of acid-hydrolyzed horse spleen apoferritin showed fluorescence attributed to dityrosine, and other compounds, excited by 325-nm laser radiation. The other fluorescent compounds resulted in a broad fluorescence emission spectrum of horse spleen apoferritin. The broad emission band overlapped with the fluorescence emission spectrum of pure dityrosine. Fractionation of horse spleen apoferritin acid hydrolysate prior to laser-excited fluorescence detection was necessary for dityrosine quantitative analysis. The concentration of dityrosine in horse spleen apoferritin was 2.5% (mol/mol), estimated from the method of …

Laser Excited Fluorescence Of Dityrosine, Sahar F. Mahmoud, Stephen E. Bialkowski

Stephen E. Bialkowski

In this research, laser-excited fluorescence was examined for sensitive detection of aqueous dityrosine. Samples were excited with a 6.3-mW, 325-nm helium-cadmium laser focused into a small volume-fluorescence cell with a 10-cm lens. The resulting fluorescence emission was collected perpendicular to the excitation and detected with two different schemes. An optical bandpass filter was used with a photomultiplier tube for sensitive quantitative measurement, while a photodiode array detector was used in conjunction with a spectrograph for qualitative characterization of fluorescence emission spectra. Dityrosine detection on the order of 2 × 10^-11 M was obtained with the use of the photomultiplier …

A Study Of Voluntary Participation In Computer User Groups, Alan Engels

Electronic Theses & Dissertations

The purpose of this study was to determine ways to increase participation of members in Computer User Groups. The problem addressed was that a small select group, less than ten percent, in the Parsons Apple/Macintosh Users Group was doing ninety-five percent or more of the work. If this scenario does not change soon, the overworked and overburdened select few may suffer burnout and quit. Case in point, Joplin, MO, had a large Computer User Group, but about seven years ago, it vanished when the select few refused to serve anymore. The same process of decay and erosion has happened in …

Determination Of Heavy Metals In Sheary Fish Lethrinus Lentjan Imperors (Family: Lethrinidae “Teleost”) In United Arab Emirates Water, Maryam Hareb Al-Yousuf

Theses

Investigation of heavy metals in fish is an important aspect of environmental pollution as human activities contribute to the progressive increase in the concentration of metals in the environment as well as aquatic system. Therefore, an analytical survey for the contents of copper, zinc, manganese, and cadmium in liver, heart, kidney, muscle and skin of Lethrinus lentjan, collected from the western coast of the United Arab Emirates (Ras AI-Khaima) was carried out. The range and mean values of the levels of metals were determined and compared with the reported values in the Arabian Gulf.

Significant concentrations of the elements …

On The Minimum Of Independent Geometrically Distributed Random Variables, Gianfranco Ciardo, Lawrence Leemis, David Nicol

Arts & Sciences Articles

The expectations E[X(1)], E[Z(1)], and E[Y(1)] of the minimum of n independent geometric, modified geometric, or exponential random variables with matching expectations differ. We show how this is accounted for by stochastic variability and how E[X(1)]/E[Y(1)] equals the expected number of ties at the minimum for the geometric random variables. We then introduce the “shifted geometric distribution”, and show that there is a unique value of the shift for which the individual shifted geometric and exponential random variables match expectations both individually and in …

Fisheries And Oceanography Off Galicia, Nw Spain: Mesoscale Spatial And Temporal Changes In Physical Processes And Resultant Patterns Of Biological Productivity, K. R. Tenore, M. Alonsonval, L. P. Atkinson, J. M. Cabanas, R. M. Cal, H. J. Campos, F. Castillejo, E. J, Chesney, N. Gonzalez, R. B. Hanson, C. R. Mcclain, A. Miranda, M. R. Roman, J. Sanchez, G. Santiago, L. Valdes, M. Varela, J. Yoder

CCPO Publications

The Galician shelf off NW Spain (43N degrees 9W degrees) exhibits mesoscale spatial and temporal changes in biological productivity associated with upwelling. Spatial heterogeneity results from local geomorphic and land-sea interactions superimposed on the large scale atmospheric processes that produce upwelling. Wind-induced upwelling events, commonly of short (i.e., week) duration, are more common in the summer than in the winter. A Series of cruises, including some time series sampling, and satellite imagery analysis showed that surface upwelling was more common and persistent on the northern coast compared with the western coast off the coastal embayments, the Rias Bajas. Nearshore off …

Seroprevalence Of Toxoplasmosis Amongst Healthy Adults In The Al Ain Area, Hamad Noor Mohamed Ahmad

Theses

There being no published data on the seroprevalence of toxoplasmosis in the UAE, a base -line study was carried out on a randomly selected population of healthy adults drawn from subjects presenting themselves for a health certificate at the Department of Preventive Medicine, Al Ain, or presenting for blood donation at the two main hospitals in Al Ain, the Tawam Hospital and Al Ain Hospital. Commercially available VIDAS IgG and IgM kits were used to test for seropositivity. A validated questionnaire was used to record personal data and blood was drawn from each donor after informed consent. All raw data …

Proforce Waves: The Effect Of Current Behind The Shock Front On Wave Structure, Mostafa Hemmati, Steven Young

Journal of the Arkansas Academy of Science

Recently, the initial boundary conditions for proforce waves with a substantial current behind the shock front have been derived. Computer solutions of the Electron Fluid Dynamical equations meet the expected boundary conditions at the end of the sheath region. This paper will compare the wave structure for proforce waves with and without current behind the shock front.

Completion Report: Arkansas State Pesticides In Ground Water Monitoring Project Phase Iv: Eastern Arkansas (Pulaski, Lee And Jackson Counties), T. Nichols, P. Vendrell, K. Steele, H. D. Scott, C. Armstrong

Technical Reports

In 1995, fifty-two water samples were drawn from 49 new wells and 2 wells that had been previously sampled during earlier phases. These included twenty samples from 19 wells in eastern Pulaski County, thirteen wells in Lee County, 16 wells in Jackson County, two wells in Lonoke County, one well in Crittenden County and resamples of two wells in Woodruff County. Figure 1 shows the locations of the 3 counties where the majority of the samples were taken and Figures 2-4 show the monitoring locations withing these counties. The wells were tested for nitrate and 13 pesticides listed in Table …

Drift Chamber Utilizing Microstrip Readout For Testing A New Micro Tpc Concept, H. Weiman, W. G. Gong, S. Margetis, M. T. Burks, Wilfred J. Braithwaite, A. A. Rollefson

Journal of the Arkansas Academy of Science

A drift chamber type radiation detector is being used to examine design criteria for a new type of detector called a micro Time Projection Chamber (micro TPC) which is being proposed for use in high energy nuclear physics experiments. The main advantage of the micro TPC detector is its very low radiation thickness compared to its silicon counterpart. The micro TPC is a charged-particle detector which willbe optimized for good two track resolution which is needed inahigh track density environment. Such performance requires low electron diffusion and high resolution readout. The diffusion willbe reduced bylimiting the drift distance to 15 …

Supralinear Photoconductivity Of Copper Doped Semi-Insulating Gallium Arsenide, K. H. Schoenbach, R. P. Joshi, F. Peterkin, R. L. Druce

Bioelectrics Publications

We report on the intensity dependent supralinear photoconductivity in GaAs:Si:Cu material. The results of our measurements show that the effective carrier lifetime can change over two orders of magnitude with variations in the intensity of the optical excitation. A threshold intensity level has been observed and can be related to the occupancy of the deep copper level. Numerical simulations have also been carried out to analyze the trapping dynamics. The intensity dependent lifetimes obtained from the simulations match the experimental data very well. Finally, based on the nonlinear intensity dependence of the effective lifetimes, a possible low‐energy phototransistor application for …

New Optical Cell Design For Laser Flash Photolysis Studies In Supercritical Fluids, Steven R. Goates, Milton L. Lee, Qin Ji, Edward M. Eyring, Rudi Van Eldik, Kedika Bal Reddy

Faculty Publications

A high-pressure optical cell has been designed that achieves an effective separation between the chemical sample and the pressurizing medium and system. This design limits possible sample contamination and catalytic effects under supercritical fluid sample conditions. Laser flash photolysis experiments were carried out on molybdenum hexacarbonyl dissolved in supercritical CO2. The thermal ring closure reaction of the species Mo(CO)5L, where L is 2,2- bipyridine was found to proceed at rates comparable to those measured previously in liquid benzene or toluene. Much larger activation volumes were found for the reaction in supercritical CO2 than in liquid toluene.

Gps Monitoring Data For Active Volcanos Available On Internet, Timothy H. Dixon, Frederic Farina, Ailin Mao, Frank Webb, Marcus Bursik, Ross Stein, Grant Marshall

School of Geosciences Faculty and Staff Publications

Recent technological advances have now made it possible for volcanologists to continuously monitor active volcanoes with the Global Positioning System (GPS). These observations allow detection of large changes in surface strain near active volcanoes that may precede major volcanic eruptions by days, weeks or even months. They are therefore a critical component of programs designed to assess hazard and predict eruptions of active volcanoes.

Researchers who are unfamiliar with GPS technology or who do not have facilities to process large amounts of GPS data may have difficulty obtaining GPS results, however. To address this problem, we recently initiated a “proof …

Current Meter Observations In The Old Bahama Channel, L. P. Atkinson, T. Berger, P. Hamilton, E. Waddell, K. Leaman, T. N. Lee

CCPO Publications

Current meter observations were made at 50, 250, and 435 m in 495 m of water at the center of the Old Bahama Channel between November 1990 and November 1991. The mean speed at those depths was 2.6, 50, and 26 cm s^-1 toward the Straits of Florida. A maximum speed of 193 cm s^-1 was found at the 250-m level. There was evidence of a speed maximum between 50 and 250 m. Large internal diurnal tidal currents were observed that produced high shears in the water column under some conditions. Transport calculated from the single mooring using …

Department Of Energy Programmatic Spent Nuclear Fuel Management And Idaho National Engineering Laboratory Environmental Restoration And Waste Management Programs Final Environmental Impact Statement, Volume 1, Appendix C, United States Department Of Energy

All U.S. Government Documents (Utah Regional Depository)

The U.S. Department of Energy (DOE) is engaged in two related decisionmaking processes concerning: (1) the transportation, receipt, processing, and storage of spent nuclear fuel (SNF) at the DOE Idaho National Engineering Laboratory (INEL) which will focus on the next 10 years; and (2) programmatic decisions on future spent nuclear fuel management which will emphasize the next 40 years. DOE is analyzing the environmental consequences of these spent nuclear fuel management actions in this two-volume Environmental Impact Statement (EIS). Volume 1 supports broad programmatic decisions that will have applicability across the DOE complex and describes in detail the purpose and …

Department Of Energy Programmatic Spent Nuclear Fuel Management And Idaho National Engineering Laboratory Environmental Restoration And Waste Management Programs Final Environmental Impact Statement, Volume 2, Part B, United States Department Of Energy

All U.S. Government Documents (Utah Regional Depository)

Per U.S. Environmental Protection Agency's guidance, each contaminant was categorized as carcinogenic or noncarcinogenic. Exposures to contaminants were then evaluated for potential health effects. The method used was dependent on whether the exposure was to the public or to a worker and whether the contaminant was classified as a carcinogen or a noncarcinogen. Health effects were reported separately and were not summed where distinctly different types of effects were reported for chemical exposures (that is, carcinogenic and noncarcinogenic).

Flood Insurance Study, Town Of Joseph, Utah, Sevier County, Federal Emergency Management Agency

All U.S. Government Documents (Utah Regional Depository)

This Flood Insurance Study revises and updates a previous flood Insurance Rate Map for the Town of Joseph, Utah. This information will be used by the Town to update existing floodplain regulations as part of the Regular Phase of the National Flood Insurance Program (NFIP). The information will also be used by local and regional planners to further promote sound land use and floodplain development.

Department Of Energy Programmatic Spent Nuclear Fuel Management And Idaho National Engineering Laboratory Environmental Restoration And Waste Management Programs Final Environmental Impact Statement, Volume 1, Appendix L, United States Department Of Energy

All U.S. Government Documents (Utah Regional Depository)

This section provides an assessment of the areas surrounding the 10 sites under consideration for the management of SNF under all programmatic alternatives considered in this volume. It is divided into two sections: (a) the five sites considered for the management of DOE naval SNF only (under the No Action and Decentralization alternatives, and (b) the five DOE sites being considered for the management of all types of DOE SNF under all alternatives. The five sites considered for the management of naval SNF only are the Norfolk Naval Shipyard, Portsmouth, Virginia; Portsmouth Naval Shipyard, Kittery, Maine; Pearl Harbor Naval Shipyard, …

Department Of Energy Programmatic Spent Nuclear Fuel Management And Idaho National Engineering Laboratory Environmental Restoration And Waste Management Programs Final Environmental Impact Statement, Volume 3, Part B, United States Department Of Energy

All U.S. Government Documents (Utah Regional Depository)

DOE acknowledges its responsibility to safely manage spent nuclear fuel (SNF). The Secretary of Energy has publicly affirmed that current DOE policy and practice emphasize safety and environmental considerations above other program goals. DOE is formally committed to protecting the safety and health of its workers, the public, and the environment. Furthermore, DOE intends to design, construct and operate facilities in a safe manner, relying on lessons learned from the last 40 years of SNF management. DOE is working to rectify and eliminate any adverse environmental impacts from past programs.

Draft Environmental Impact Statement, Oil And Gas Leasing On Lands Administered By Dixie National Forest, United States Bureau Of Land Management

All U.S. Government Documents (Utah Regional Depository)

This Environmental Impact Statement documents the analysis of the potential effects of implementing each of five alternatives for management of the Federal oil and gas estate on lands administered by the Dixie National Forest in Garfield, Kane, Iron, Washington, Piute, and Wayne Counties, Utah. The existing condition of the environmental resources in the project area is documented and potential impacts to those resources as a result of implementing the proposed action are addressed. The alternatives are Proposed Action - Forest Plan Intent, (1) No Action - No Lease, (2) Forest Plan Modification A, (3) Forest Plan Modification B, (4) Forest …

Department Of Energy Programmatic Spent Nuclear Fuel Management And Idaho National Engineering Laboratory Environmental Restoration And Waste Management Programs Final Environmental Impact Statement, Volume 1, Appendix F, United States Department Of Energy

All U.S. Government Documents (Utah Regional Depository)

This appendix addresses the interim storage of spent nuclear fuel (SNF) at two U.S. Department of Energy sites, the Nevada Test Site (NTS) and the Oak Ridge Reservation (ORR). These sites are being considered to provide a reasonable range of alternative settings at which future SNF management activities could be conducted. These locations are not currently involved in management of large quantities of SNF; NTS has none, and ORR has only small quantities. But NTS and ORR do offer experience and infrastructure for the handling, processing and storage of radioactive materials, and they do exemplify a broad spectrum of environmental …

Department Of Energy Programmatic Spent Nuclear Fuel Management And Idaho National Engineering Laboratory Environmental Restoration And Waste Management Programs Final Environmental Impact Statement, Volume 2, Part A, United States Department Of Energy

All U.S. Government Documents (Utah Regional Depository)

This document analyzes at a programmatic level the potential environmental consequences over the next 40 years of alternatives related to the transportation, receipt, processing, and storage of spent nuclear fuel under the responsibility of the U.S. Department of Energy. It also analyzes the site-specific consequences of the Idaho National Engineering Laboratory sitewide actions anticipated over the next 10 years for waste and spent nuclear fuel management and environmental restoration. For programmatic spent nuclear fuel management, this document analyzes alternatives of no action, decentralization, regionalization, centralization and the use of the plans that existed in 1992/1993 for the management of these …

Flood Insurance Study, City Of Riverdale, Utah, Weber County, Federal Emergency Management Agency

All U.S. Government Documents (Utah Regional Depository)

This Flood Insurance Study investigates the existence and severity of flood hazards in the City of Riverdale, Weber County, Utah, and aids in the administration of the National Flood Insurance Act of 1968 and the Flood Disaster Protection Act of 1973. This study will be used to convert Riverdale to the regular program of flood insurance by the Federal Emergency Management Agency. Local and regional planners will use this study in their efforts to promote sound flood plain management.

Department Of Energy Programmatic Spent Nuclear Fuel Management And Idaho National Engineering Laboratory Environmental Restoration And Waste Management Programs Final Environmental Impact Statement, Volume 1, Appendix D, Part B, United States Department Of Energy

All U.S. Government Documents (Utah Regional Depository)

The methods used to perform the analyses in the environmental impact statement have been refined in the time since the environmental assessment was prepared. This occurred partly because of the larger number of naval spent nuclear fuel assemblies analyzed and the wider scope of sites and methods of storage to be evaluated, and partly because additional time was available to implement the refinements. In addition to refinements in the methods for performing the calculations, some minor changes in the calculational models were made in order to establish a high degree of consistency with the analytical methods used for the other …

Department Of Energy Programmatic Spent Nuclear Fuel Management And Idaho National Engineering Laboratory Environmental Restoration And Waste Management Programs Final Environmental Impact Statement, Volume 1, Appendix A, United States Department Of Energy

All U.S. Government Documents (Utah Regional Depository)

The U.S. Department of Energy (DOE) is currently deciding the direction of its environmental restoration and waste management programs at the Idaho National Engineering Laboratory (INEL) for the next 10 years. Pertinent to this decision is establishing policies for the environmentally sensitive and safe transport, storage, and management of spent nuclear fuels (SNF). To develop these policies, it is necessary to revisit or examine the available options. As a part of the DOE complex, the Hanford Site not only has a large portion of the nationwide DOE-owned inventory of SNF, but also is a participant in the DOE decision for …

Department Of Energy Programmatic Spent Nuclear Fuel Management And Idaho National Engineering Laboratory Environmental Restoration And Waste Management Programs Final Environmental Impact Statement, Volume 1, Appendix B, United States Department Of Energy

All U.S. Government Documents (Utah Regional Depository)

This Appendix B to Volume 1 considers the impacts on the INEL environment of the implementation of various DOE-wide spent nuclear fuel management alternatives. The Naval Nuclear Propulsion Program, which is a joint Navy/DOE program, is responsible for spent naval nuclear fuel examiniation at the INEL. For this appendix, naval fuel that has been examined at the Naval Reactors Facility and turned over to DOE for storage is termed naval-type fuel. This appendix evaluates the management of DOE spent nuclear fuel including naval-type fuel. Naval spent nuclear fuel examination is addressed in Appendix D; Section 5.16 of this appendix includes …

1995 Statewide Long Range Transportation Plan, Udot Program Development

All U.S. Government Documents (Utah Regional Depository)

The Statewide Transportation Planning Process for highway transportation builds upon the planning processes previously used by UDOT. The previous planning process developed a three-tier list of capacity and system improvement projects from public and UDOT staff participation. Projects were ranked according to need into three priorities. Priority One projects were those needed within five years. Priority Two projects were needed in five to ten years, and Priority Three projects were those projects needed in ten to twenty years. The Statewide Transportation Planning Process uses data collected from a series of Management Systems, corridor inventories, and other special studies combined with …