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[Letter from Nancy Reynolds to Beverly Fletcher, July 17, 1992]
Photocopy of a letter from Nancy Reynolds, project coordinator of North Texas Institute for Educators on the Visual Arts, to Beverly Fletcher, Art Supervisor of Fort Worth ISD. In regards a meeting Bill McCarter and Reynolds had where they evaluated Fletcher and her secondary teachers in promoting and the implementation of discipline-based art education, DBAE. The rest of the letter goes into details about materials and supplies Fletcher needs to obtain for her teachers, along with handbook materials Reynolds has provided for Fletcher.
Date:
July 17, 1992
Creator:
Reynolds, Nancy
Object Type:
Letter
System:
The UNT Digital Library
Acceleration of electrons using an inverse free electron laser auto- accelerator
We present data from our study of a device known as the inverse free electron laser. First, numerical simulations were performed to optimize the design parameters for an experiment that accelerates electrons in the presence of an undulator by stimulated absorption of radiation. The Columbia free electron laser (FEL) was configured as an auto-accelerator (IFELA) system; high power (MW's) FEL radiation at {approximately}1.65 mm is developed along the first section of an undulator inside a quasi-optical resonator. The electron beam then traverses a second section of undulator where a fraction of the electrons is accelerated by stimulated absorption of the 1.65 mm wavelength power developed in the first undulator section. The second undulator section has very low gain and does not generate power on its own. We have found that as much as 60% of the power generated in the first section can be absorbed in the second section, providing that the initial electron energy is chosen correctly with respect to the parameters chosen for the first and second undulators. An electron momentum spectrometer is used to monitor the distribution of electron energies as the electrons exit the IFELA. We have found; using our experimental parameters, that roughly 10% of …
Date:
July 1, 1992
Creator:
Wernick, I.K. & Marshall, T.C.
Object Type:
Report
System:
The UNT Digital Library
CGVIEW: A program to generate isometric and perspective views of combinatorial geometries
The prototype of a graphical debugger for combinatorial geometry (CG) is described. The prototype debugger consists of two parts: a FORTRAN-based view'' generator and a Microsoft Windows application for displaying the geometry. This document describes the code CGVIEW, which comprises the first part of the system. User-specified options permit the selection of an arbitrary viewpoint in space and the generation of either an isometric or perspective view. Additionally, any combination of zones, materials, or regions can be flagged as invisible to facilitate the inspection of internal details of the geometry. In the same manner, an arbitrary body can be cut away from the geometry to facilitate inspection and debugging. Examples illustrating the various options are described.
Date:
July 1, 1992
Creator:
Burns, T.J.
Object Type:
Report
System:
The UNT Digital Library
Analysis of natural gas supply strategies at Fort Drum
This analysis investigates strategies for Fort Drum to acquire a reliable natural gas supply while reducing its gas supply costs. The purpose of this study is to recommend an optimal supply mix based on the life-cycle costs of each strategy analyzed. In particular, this study is intended to provide initial guidance as to whether or not the building and operating of a propane-air mixing station is a feasible alternative to the current gas acquisition strategy. The analysis proceeded by defining the components of supply (gas purchase, gas transport, supplemental fuel supply); identifying alternative options for each supply component; constructing gas supply strategies from different combinations of the options available for each supply component and calculating the life-cycle costs of each supply strategy under a set of different scenarios reflecting the uncertainty of future events.
Date:
July 1, 1992
Creator:
Stucky, D. J.; Shankle, S. A. & Anderson, D. M.
Object Type:
Report
System:
The UNT Digital Library
Excitation of high-n toroidicity-induced shear Alfven eigenmodes by energetic particles and fusion alpha particles in tokamaks
The stability of high-n toroidicity-induced shear Alfven eigenmodes (TAE) in the presence of fusion alpha particles or energetic ions in tokamaks is investigated. The TAE modes are discrete in nature and thus can easily tap the free energy associated with energetic particle pressure gradient through wave particle resonant interaction. A quadratic form is derived for the high-n TAE modes using gyro-kinetic equation. The kinetic effects of energetic particles are calculated perturbatively using the ideal MHD solution as the lowest order eigenfunction. The finite Larmor radius (FLR) effects and the finite drift orbit width (FDW) effects are included for both circulating and trapped energetic particles. It is shown that, for circulating particles, FLR and FDW effects have two opposite influences on the stability of the high-n TAE modes. First, they have the usual stabilizing effects by reducing the wave particle interaction strength. Second, they also have destabilizing effects by allowing more particles to resonate with the TAE modes. It is found that the growth rate induced by the circulating alpha particles increase linearly with toroidal mode number n for small {kappa}{sub {theta}}{rho}{sub {alpha}}, and decreases as 1/n for {kappa}{sub {theta}}{rho}{sub {alpha}} {much gt} 1. The maximum growth rate is obtained at …
Date:
July 1, 1992
Creator:
Fu, G. Y. & Cheng, C. Z.
Object Type:
Report
System:
The UNT Digital Library
Transport of radon and thoron at the earth's surface
This report covers progress under the current funding period 1 Jan 1992 to 1 Jan 1993 and presents the continuation proposal for 1 Jan 1993 to 1 Jan 1994. The previous progress report was submitted in June 1991, so activities during the last half of 1991 will also be included. Our major activities over the last year have continued to focus on measurements and modeling of the disequilibrium of radon and thoron progeny outdoors, and analysis of data on indoor thoron and thoron progeny.
Date:
July 1, 1992
Creator:
Schery, S.D.
Object Type:
Report
System:
The UNT Digital Library
Direct Conversion Technology
The overall objective of the Direct Conversion Technology task is to develop an experimentally verified technology base for promising direct conversion systems that have potential application for energy conservation in the end-use sectors. Initially, two systems were selected for exploratory research and advanced development. These are Alkali Metal Thermal-to-Electric Converter (AMTEC) and Two-Phase Liquid Metal MD Generator (LMMHD). This report describes progress that has been made during the first six months of 1992 on research activities associated with these two systems. (GHH)
Date:
July 1, 1992
Creator:
Back, L.H.; Fabris, G. & Ryan, M.A.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0098.0605]
Photograph used for a story in the Daily Oklahoman newspaper.
Date:
July 3, 1992
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Is There a Large Risk of Radiation? a Critical Review of Pessimistic Claims
A number of situations where it has been claimed that moderate radiation doses cause leukemia or other cancers are carefully reviewed. We look at cases in the United States, Great Britain, and the Soviet Union. Usually it can be demonstrated that there is an alternative, more probable, explanation for the effect seen. In several cases the authors of the papers have fallen into statistical traps. The most frequent is a posteriori selection of cohort boundaries in both space and time: a trap illustrated dramatically by Feynman. The next most common trap is to arbitrarily select one out of many ways of looking at the data, against which we were warned by Tippett. Several cohorts are compared with respect to the number of persons at risk, average dose, and the number of cancers expected. Of these, only the cohort of A-bomb survivors in Japan and the recently unclassified data on the very large occupational doses for early Soviet nuclear workers at Chelyabinsk provide evidence of clearly visible excess cancers.
Date:
July 1992
Creator:
Shihab-Eldin, Adnan; Shlyakhter, Alexander & Wilson, Richard
Object Type:
Report
System:
The UNT Digital Library
The Use of a Centrifugal Contactor for Component Concentration by Solvent Extraction
Theoretical and experimental work was undertaken to explore the use of the Argonne design centrifugal contactor as a concentrating device for metal ions in solutions such as transuranic-containing waste streams and contaminated groundwater. First, the theoretical basis for operating the contactor as a concentrator was developed. Then, the ability of the contactor to act as a concentrating device was experimentally demonstrated with neodymium over a wide range of organic-to-aqueous (O/A) flow ratios (0.01 to 33). These data were also used to derive a correlation for the effect of O/A flow ratio on extraction efficiency.
Date:
July 1992
Creator:
Leonard, R. A.; Wygmans, D. G.; McElwee, M. J.; Wasserman, M. O. & Vandegrift, G. F.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0109.0468]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Oklahoma City's Bob Brower blasted a home run in the third inning of Thursday's 6-4 89er win at All Sports Stadium."
Date:
July 23, 1992
Creator:
Sisney, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0137.0772]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
July 21, 1992
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0149.0682]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
July 24, 1992
Creator:
Sisney, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0158.0692]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
July 3, 1992
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0158.0691]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
July 3, 1992
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0171.0133]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
July 17, 1992
Creator:
Southerland, Paul B.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0149.0556]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Jim Crouch is framed by the sign that has been a familiar logo along Rout 66 for decades."
Date:
July 31, 1992
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0174.0376]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
July 21, 1992
Creator:
Hellstern, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0156.0349]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Margaret Enis, Jeree Bernhardt, Daniel Stover, Deven Joyce and Amy Timberlake, from left, display their matching Olympic shirts."
Date:
July 19, 1992
Creator:
McDaniel, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0149.0072]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Goretti Mapulanga, Zambia, Lois Crooks, chairman, and Loyce Nyamora, Kenya, from left, visit at a recent reception at the Kirkpatrick Center hosted by Women in Communications, Inc., and the Ntu (Unity) Art Association."
Date:
July 21, 1992
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0136.0136]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "At left, Stan Clark, owner of Eskimo Joe's, has reason to smile. His companies are doing well and this week is the 17th anniversary of Joe's smiling Eskimo and dog."
Date:
July 10, 1992
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0158.0656]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Four Tulsa men, members of "Sensual Under-ground Ministries," formed the only visible opposition Sunday to a rally by backers of abortion restrictions."
Date:
July 26, 1992
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0154.0347]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
July 15, 1992
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0158.0690]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Warr Acres police arrest protesters Friday after they locked themselves together inside Dr. Nareshkumar Patel's abortion clinic."
Date:
July 3, 1992
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History