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A Study of the Current Status of Employment of Therapeutic Recreation Personnel and Projected Manpower Needs of Selected Agencies in the State of Texas

Description: The study was conducted to determine the current status and employment needs for therapeutic recreation personnel in selected agencies in the state of Texas. The study provided the first definitive information on therapeutic recreation manpower needs on a state-wide basis. The study determined the status of therapeutic recreation personnel and assisted in identifying projected training needs in the state of Texas. A survey was mailed to 114 Texas Department of Mental Health and Mental Retardation and parks and recreation agencies. Information was requested concerning General Agency Information, Recreation Services, Current Employment, Current Therapeutic Recreation Personnel, Projected Employment and Bilingual Employees and Client information.
Date: December 1980
Creator: Buckles, Judith L.
Partner: UNT Libraries

The Development of a Leisure Knowledge Test

Description: The purposes of this study were to develop an instrument to measure knowledge of leisure opportunities, and determine the reliability of the instrument. Subjects included 292 orthopedically impaired, nine to fourteen year old children. A multiple-choice format is used. The content is based on four domains. These are entertainment, games, sports, and arts and crafts. The domains are subcategorized into who, where, what, when, and cost of activities. The Kuder-Richardson formula 20 showed a reliability coefficient of .81. The Pearson, point biserial correlation was used to determine item-test correlations. Correlations below .20 were revised. Items with a difficulty level of 70 percent and above were also revised. The results indicated that the instrument had been successfully developed.
Date: August 1981
Creator: Forsyth, Patty S. (Patty Sue)
Partner: UNT Libraries

Experimental measurement of Au M-band flux in indirectly-driven double-shell implosions

Description: Indirectly-driven double-shell implosions are being investigated as a possible noncryogenic path to ignition on the National Ignition Facility (NIF). In recent double-shell implosions, the inner shell trajectory was shown to exhibit a strong sensitivity to the temporal history of the M-band (2-5 keV) radiation emitted from the Au hohlraum wall. A large time-dependent discrepancy was observed between measurement and simulation of the x-ray flux in this range. In order to better characterize the radiation environment seen in these implosions, an experimental campaign was conducted on the Omega Laser. A number of diagnostics were used to measure both the temporal and spectral nature of the M-band flux. Results were obtained from an absolutely calibrated 12 channel filtered x-ray diode array (Dante) as well as two streaked crystal spectrometers and an absolutely calibrated time-integrated spectrometer (Henway). X-ray backlighting was also used to directly measure the effect of M-band radiation on the trajectory of the inner shell. The data from all diagnostics are shown to be in excellent agreement and provide a consistent picture of the M-band flux. These results are being used to improve the simulation of hohlraum-generated M-band radiation that will be necessary for the design of future double-shell implosions employing higher Z inner shells.
Date: September 17, 2004
Creator: Robey, H F; Perry, T S; Park, H S; Amendt, P; Sorce, C M; Compton, S M et al.
Partner: UNT Libraries Government Documents Department

Experimental measurement of Au M-band flux in indirectly-driven double-shell implosions

Description: Indirectly-driven double-shell implosions are being investigated as a possible noncryogenic path to ignition on the National Ignition Facility (NIF). In recent double-shell experiments, the inner shell trajectory was shown to exhibit a strong sensitivity to the temporal history of the M-band (2-5 keV) radiation emitted from the Au hohlraum wall. A large time-dependent discrepancy was observed between measurement and simulation of the x-ray flux in this range. In order to better characterize the radiation environment seen in these implosions, an experimental campaign was conducted on the Omega Laser. A number of diagnostics were used to measure both the temporal and spectral nature of the M-band flux. Results were obtained from an absolutely calibrated 12 channel filtered x-ray diode array (Dante) as well as two streaked crystal spectrometers and an absolutely calibrated time-integrated spectrometer (Henway). X-ray backlighting was also used to directly measure the effect of M-band radiation on the trajectory of the inner shell. The data from all diagnostics are shown to be in excellent agreement and provide a consistent picture of the M-band flux. These results are being used to constrain and improve the simulation of hohlraum-generated M-band radiation that will be necessary for the design of future double-shell implosions employing higher-Z inner shells.
Date: March 24, 2005
Creator: Robey, H F; Perry, T S; Park, H S; Amendt, P; Sorce, C M; Compton, S M et al.
Partner: UNT Libraries Government Documents Department

Propagation or failure of detonation across an air gap in an LX-17 column: continuous time-dependent detonation or shock speed using the Embedded Fiber Optic (EFO) technique

Description: The detailed history of the shock/detonation wave propagation after crossing a room-temperature-room-pressure (RTP) air gap between a 25.4 mm diameter LX-17 donor column and a 25.4 mm diameter by 25.4 mm long LX-17 acceptor pellet is investigated for three different gap widths (3.07, 2.08, and 0.00 mm) using the Embedded Fiber Optic (EFO) technique. The 2.08 mm gap propagated and the 3.07 mm gap failed and this can be seen clearly and unambiguously in the EFO data even though the 25.4 mm-long acceptor pellet would be considered quite short for a determination by more traditional means such as pins.
Date: January 16, 2008
Creator: Hare, D E; Chandler, J B; Compton, S M; Garza, R G; Grimsley, D A; Hernandez, A et al.
Partner: UNT Libraries Government Documents Department

MULTI-KEV X-RAY YIELDS FROM HIGH-Z GAS TARGETS FIELDED AT OMEGA

Description: The authors report on modeling of x-ray yield from gas-filled targets shot at the OMEGA laser facility. The OMEGA targets were 1.8 mm long, 1.95 mm in diameter Be cans filled with either a 50:50 Ar:Xe mixture, pure Ar, pure Kr or pure Xe at {approx} 1 atm. The OMEGA experiments heated the gas with 20 kJ of 3{omega} ({approx} 350 nm) laser energy delivered in a 1 ns square pulse. the emitted x-ray flux was monitored with the x-ray diode based DANTE instruments in the sub-keV range. Two-dimensional x-ray images (for energies 3-5 keV) of the targets were recorded with gated x-ray detectors. The x-ray spectra were recorded with the HENWAY crystal spectrometer at OMEGA. Predictions are 2D r-z cylindrical with DCA NLTE atomic physics. Models generally: (1) underpredict the Xe L-shell yields; (2) overpredict the Ar K-shell yields; (3) correctly predict the Xe thermal yields; and (4) greatly underpredict the Ar thermal yields. However, there are spreads within the data, e.g. the DMX Ar K-shell yields are correctly predicted. The predicted thermal yields show strong angular dependence.
Date: November 4, 2010
Creator: Kane, J O; Fournier, K B; May, M J; Colvin, J D; Thomas, C A; Marrs, R E et al.
Partner: UNT Libraries Government Documents Department

ENERGY PARTITIONING, ENERGY COUPLING (EPEC) EXPERIMENTS AT THE NATIONAL IGNITION FACILITY

Description: The energy-partitioning, energy-coupling (EPEC) experiments at the National Ignition Facility (NIF) will simultaneously measure the coupling of energy into both ground shock and air-blast overpressure from a laser-driven target. The source target for the experiment is positioned at a known height above the ground-surface simulant and is heated by four beams from NIF. The resulting target energy density and specific energy are equal to those of a low-yield nuclear device. The ground-shock stress waves and atmospheric overpressure waveforms that result in our test system are hydrodynamically scaled analogs of seismic and air-blast phenomena caused by a nuclear weapon. In what follows, we discuss the motivation for our investigation and briefly describe NIF. Then, we introduce the EPEC experiments, including diagnostics, in more detail.
Date: January 5, 2012
Creator: Fournier, K B; Brown, C G; May, M J; Dunlop, W H; Compton, S M; Kane, J O et al.
Partner: UNT Libraries Government Documents Department