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A meta-analysis of service learning research in middle and high schools.

Description: This study examines the relationship between service learning innovations and improved academics, self-concept, and social or personal growth in middle and high school students. Meta-Analysis is employed to arrive at effect-size estimates for each construct. A historical overview of service learning is presented and a detailed description of the study selection process is provided. The data revealed a moderate relationship between service learning participation and academics, self-concept and s… more
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Date: December 2001
Creator: White, Amy E.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Evaluation of a laser-induced fluorescence system for uranium analysis

Description: A laser-induced fluorescence method for total uranium analysis of industrial process waters, waste waters, and leachates has been evaluated as a possible alternative for the normal, sodium fluoride and lithium fluoride, flame-fusion fluorescence method currently employed. Since the lower reporting limit of the laser fluorometer is on the order of 0.05 ..mu..g/L, samples for normal analysis can usually be diluted from 100 to 1000 fold which virtually eliminates interferences from quenching subst… more
Date: May 1, 1980
Creator: White, L.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Attitude control of a spinning rocket via thrust vectoring

Description: Two controllers are developed to provide attitude control of a spinning rocket that has a thrust vectoring capability. The first controller has a single-input/single-output design that ignores the gyroscopic coupling between the control channels. The second controller has a multi-input/multi-output structure that is specifically intended to account for the gyroscopic coupling effects. A performance comparison between the two approached is conducted for a range of roll rates. Each controller is … more
Date: December 19, 1990
Creator: White, J.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Geothermal energy

Description: The following subjects are discussed: areas of ''normal'' geothermal gradient, large areas of higher-than-''normal'' geothermal gradient, hot spring areas, hydrothermal systems of composite type, general problems of utilization, and domestic and world resources of geothermal energy. Almost all estimates and measurements of total heat flow published through 1962 for hot spring areas of the world are tabulated. (MHR)
Date: January 1, 1965
Creator: White, D. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Shifting Identities: A Qualitative Inquiry of Black Transgender Men's Experiences

Description: The purpose of this transcendental phenomenological study was to explore Black transgender men's experiences navigating systems of racism and transphobia. To this end, I utilized a critical race theory and intersectionality theory framework to answer the following question: What are Black transgender men's experiences with power, privilege, and oppression? The ten Black transgender men and transmasculine people who participated in this study provided detailed and moving accounts of their expe… more
Date: August 2019
Creator: White, Mickey E.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Production and Testing of the VITAMIN-B6 Fine Group and the BUGLE-93 Broad-Group Neutron/Photon Cross-Section Libraries Derived from ENDF/B-VI Nuclear Data

Description: A revised multigroup cross-section library based on Release 3 of ENDF/B-VI data has been produced and tested for light-water-reactor shielding and reactor pressure vessel dosimetry applications. This new broad-group library, which is designated BUGLE-96, represents an improvement over the BUGLE-93 data library released in February 1994 and replaces the data package for BUGLE-93 in the Radiation Safety Information Computational Center (formerly RSIC). The processing methodology is the same as th… more
Date: April 19, 2001
Creator: White, J. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Energy life-cycle analysis modeling and decision support tool

Description: As one of DOE`s five multi-program national laboratories, Pacific Northwest Laboratory (PNL) develops and deploys technology for national missions in energy and the environment. The Energy Information Systems Group, within the Laboratory`s Computer Sciences Department, focuses on the development of the computational and data communications infrastructure and automated tools for the Transmission and Distribution energy sector and for advanced process engineering applications. The energy industry… more
Date: June 1, 1993
Creator: Hoza, M. & White, M. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Development of the ENDF/B-VI Atom Displacement Cross Sections for Iron

Description: The atom displacement (dpa) cross sections for iron given in the ASTM Standard Practice E6 693 are based on the data from ENDF/B-IV the cross sections have been changed considerably. In particular for iron, ENDF/B-VI gives cross-section evaluations for the individual isotopes with more forward-directed inelastic scattering, and reduced magnitude of the inelastic scattering at high energies. This report provides the displacement cross sections for iron generated from the ENDF/B-VI data and docum… more
Date: June 1, 1999
Creator: Remec, I. & White, J.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Oxygen electrode reaction in molten carbonate fuel cells. Final report, September 15, 1987--September 14, 1990

Description: Molten carbonate fuel cell system is a leading candidate for the utility power generation because of its high efficiency for fuel to AC power conversion, capability for an internal reforming, and a very low environmental impact. However, the performance of the molten carbonate fuel cell is limited by the oxygen reduction reaction and the cell life time is limited by the stability of the cathode material. An elucidation of oxygen reduction reaction in molten alkali carbonate is essential because… more
Date: July 7, 1992
Creator: Appleby, A. J. & White, R. E.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
open access

Oxygen electrode reaction in molten carbonate fuel cells

Description: Molten carbonate fuel cell system is a leading candidate for the utility power generation because of its high efficiency for fuel to AC power conversion, capability for an internal reforming, and a very low environmental impact. However, the performance of the molten carbonate fuel cell is limited by the oxygen reduction reaction and the cell life time is limited by the stability of the cathode material. An elucidation of oxygen reduction reaction in molten alkali carbonate is essential because… more
Date: July 7, 1992
Creator: Appleby, A. J. & White, R. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Synthesis, Characterization and Testing of Novel Anode and Cathode Materials for Li-Ion Batteries

Description: During this program we have synthesized and characterized several novel cathode and anode materials for application in Li-ion batteries. Novel synthesis routes like chemical doping, electroless deposition and sol-gel method have been used and techniques like impedance, cyclic voltammetry and charge-discharge cycling have been used to characterize these materials. Mathematical models have also been developed to fit the experimental result, thus helping in understanding the mechanisms of these ma… more
Date: October 31, 2002
Creator: White, Ralph E. & Popov, Branko N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fabrication of tungsten--uranium dioxide honeycomb structures. Phase I. Summary report

Description: Declassified 28 Aug 1973. W--20 vol% U0/sub 2/ honeycomb structures were successfully made by two fabrication methods. One method involved stacking of individual unsintered hexagonal tubes, followed by isostatic pressing and sintering. The other method formed the unsintered honeycomb as a unit which was then sintered. The sintered structures, eonsisting of a close array of 1-1/2 in. long hexagonal channels, had densities ranging from 94 to >97% of theoretical. In addition to honeycomb fabricati… more
Date: March 19, 1965
Creator: White, D.E. & Foley, E.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Assessment of Geothermal Resources of the United States--1975

Description: This is the first of two significant assessments of the geological energy potential of the U.S. The second one is U.S.G.S. Circular 790. Systems analyzed include: Hydrothermal convection systems (with estimates of potential for many specific sites in the West), Igneous related systems (related to current or recent volcanism), Estimates of the conductive transport of heat in most areas of CONUS, Recovery of heat from molten igneous systems (magma), and Geopressured geothermal energy in the Gulf … more
Date: 1975
Creator: White, D. E. & Williams, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Properties of Low-Carbon N-155 Alloy Bar Stock From 1200 to 1800 Degrees Fahrenheit

Description: Memorandum presenting the results of an investigation to establish rupture and total-deformation strengths at 1200 and 1800 degrees Fahrenheit for typical commercial treatments of low-carbon N-155 alloy. The results show that there were large differences in strength between the heats of bar stock at temperatures above 1200 degrees Fahrenheit except when a 2200 degree Fahrenheit solution treatment was used.
Date: May 3, 1951
Creator: Freeman, J. W. & White, A. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Internet and College Students' Motivation to Vote

Description: This article investigates the impact of the political information available on-line on college students’ motivation to vote. The results illustrate that not only politicians, but educators should be cognizant of this civic engagement process. Schools and teachers of all levels are one the front lines of the battle to create a more informed, more involved citizenry; higher education has a strong influence on motivation to vote.
Date: March 1, 2004
Creator: White, Amy E. & King, Kimi L.
Item Type: Refine your search to only Article
Partner: UNT College of Arts and Sciences
open access

STARS MDT-II targets mission

Description: The Strategic Target System (STARS) was launched successfully on August 31, 1996 from the Kauai Test Facility (KTF) at the Pacific Missile Range Facility (PMRF). The STARS II booster delivered a payload complement of 26 vehicles atop a post boost vehicle. These targets were designed and the mission planning was achieved to provide for a dedicated mission for view by the Midcourse Space Experiment (MSX) Satellite Sensor Suite. Along with the MSX Satellite, other corollary sensors were involved. … more
Date: August 1, 1997
Creator: Sims, Brent A. & White, John E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Mathematical model of a NiOOH/metal hydride cell. Final report, September 15, 1993--November 14, 1996

Description: One of the objectives of work on the nickel/metal hydride cell has been to develop a mathematical model of the performance of the cell. This is a summary of work to date and is meant to be a Final Report of the BES project. Mathematical model of the nickel/metal hydride cell depends on the kinetics, thermodynamics, and transport properties of the metal hydride electrode. Consequently, investigations were carried out to determine: (1) the exchange current density and the equilibrium potential as… more
Date: December 31, 1996
Creator: White, R.E. & Popov, B.N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Gold and Other Minor Elements Associated with the Hot Springs and Geysers of Yellowstone National Park, Wyoming, Supplemented with Data from Steamboat Springs, Nevada

Description: Report providing information from 125 samples of rock studies, analyzed by using a emission-spectographic method. The studies take place in Yellowstone National Park and Steamboat Springs, Nevada.
Date: 1992
Creator: White, Donald E.; Heropoulos, Chris & Fournier, R. O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Guide for licensing evaluations using CRAC2: A computer program for calculating reactor accident consequences

Description: A version of the CRAC2 computer code applicable for use in analyses of consequences and risks of reactor accidents in case work for environmental statements has been implemented for use on the Nuclear Regulatory Commission Data General MV/8000 computer system. Input preparation is facilitated through the use of an interactive computer program which operates on an IBM personal computer. The resulting CRAC2 input deck is transmitted to the MV/8000 by using an error-free file transfer mechanism. T… more
Date: December 1, 1988
Creator: White, J. E.; Roussin, R. W. & Gilpin, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nuclear Regulatory Commission programs are supported by the technology resources of the Engineering Physics Information Centers

Description: The Engineering Physics Information Centers (EPIC) at Oak Ridge National Laboratory have two activities which support NRC Programs, the Radiation Shielding Information Center (RSIC) and the Technical Data Management Center (TDMC). The older of the two, RSIC, was established in 1963 as an Information Analysis Center in the general field of radiation shielding, transport, and protection. It has multiple agency funding to acquire, evaluate, organize, and distribute information (including computing… more
Date: January 1, 1986
Creator: Hatmaker, N. A.; Roussin, R. W. & White, J. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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