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120
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104
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18
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Hondo Anvil Herald (Hondo, Tex.), Vol. 112, No. 2, Ed. 1 Thursday, January 8, 1998
Weekly newspaper from Hondo, Texas that includes local, state, and national news along with extensive advertising.
Date:
January 8, 1998
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Polk County Enterprise (Livingston, Tex.), Vol. 116, No. 80, Ed. 1 Thursday, October 8, 1998
Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date:
October 8, 1998
Creator:
White, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Polk County Enterprise (Livingston, Tex.), Vol. 116, No. 89, Ed. 1 Sunday, November 8, 1998
Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date:
November 8, 1998
Creator:
White, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
The Effects of Site Characterization Activities on the Abundance of Ravens (Corvus corax) in the Yucca Mountain Area
In response to the Nuclear Waste Policy Act of 1982 and the Nuclear Waste Policy Amendments Act of 1987, the U.S. Department of Energy (DOE) developed and is implementing the Yucca Mountain Site Characterization Project. Raven abundance was measured from August 1991 through August 1995 along treatment and control routes to evaluate whether site characterization activities resulted in increased raven abundance at Yucca Mountain. This study fulfills the requirement set forth in the incidental take provisions of the Biological Opinion that DOE monitor the abundance of ravens at Yucca Mountain. Ravens were more abundant at Yucca Mountain than in the control area, and raven abundance in both areas increased over time. However, the magnitude of differences between Yucca Mountain and control surveys did not change over time, indicating that the increase in raven abundance observed during this study was not related to site characterization activities. Increases over time on both Yucca Mountain and control routes are consistent with increases in raven abundance in the Mojave Desert reported by the annual Breeding Bird Survey of the US. Fish and Wildlife Service. Evidence from the Desert Tortoise Monitoring Program at Yucca Mountain suggests that ravens are not a significant predator of small …
Date:
May 8, 1998
Creator:
Lederle, P.E.
Object Type:
Report
System:
The UNT Digital Library
Simulation of void growth in tantalum at high-strain rate
None
Date:
December 8, 1998
Creator:
Belak, J
Object Type:
Article
System:
The UNT Digital Library
The dynamic information architecture system : an advanced simulation framework for military and civilian applications.
DIAS, the Dynamic Information Architecture System, is an object-oriented simulation system that was designed to provide an integrating framework in which new or legacy software applications can operate in a context-driven frame of reference. DIAS provides a flexible and extensible mechanism to allow disparate, and mixed language, software applications to interoperate. DIAS captures the dynamic interplay between different processes or phenomena in the same frame of reference. Finally, DIAS accommodates a broad range of analysis contexts, with widely varying spatial and temporal resolutions and fidelity.
Date:
January 8, 1998
Creator:
Campbell, A. P. & Hummel, J. R.
Object Type:
Article
System:
The UNT Digital Library
Site systems engineering fiscal year 1999 multi-year work plan (MYWP) update for WBS 1.8.2.2
Manage the Site Systems Engineering process to provide a traceable integrated requirements-driven, and technically defensible baseline. Through the Site Integration Group(SIG), Systems Engineering ensures integration of technical activities across all site projects. Systems Engineering's primary interfaces are with the RL Project Managers, the Project Direction Office and with the Project Major Subcontractors, as well as with the Site Planning organization. Systems Implementation: (1) Develops, maintains, and controls the site integrated technical baseline, ensures the Systems Engineering interfaces between projects are documented, and maintain the Site Environmental Management Specification. (2) Develops and uses dynamic simulation models for verification of the baseline and analysis of alternatives. (3) Performs and documents fictional and requirements analyses. (4) Works with projects, technology management, and the SIG to identify and resolve technical issues. (5) Supports technical baseline information for the planning and budgeting of the Accelerated Cleanup Plan, Multi-Year Work Plans, Project Baseline Summaries as well as performance measure reporting. (6) Works with projects to ensure the quality of data in the technical baseline. (7) Develops, maintains and implements the site configuration management system.
Date:
October 8, 1998
Creator:
GRYGIEL, M.L.
Object Type:
Report
System:
The UNT Digital Library
THE CONTROLLED DRIFT DETECTOR : CHARACTERISATION OF THE READOUT MECHANISM AND OF THE CHARGE HANDLING CAPABILITY.
A new position-sensing X-ray detector operated in integrate-readout mode has been recently designed and characterized. Due to the peculiar working principle of the new detector, the charge handling capability, that is the maximum charge that can be stored in a pixel, is related to the operating conditions of the device. In particular the amplitude of the barriers that confine the signal electrons during the integration phase depends on the applied drift field and on the field perturbation superposed to it. A detailed experimental characterization of the charge handling capability as a function of these parameters has been carried out.
Date:
November 8, 1998
Creator:
Castoldi, A.; Gatti, E.; Guazzoni, C.; Longoni, A.; Rehak, P. & Struder, L.
Object Type:
Article
System:
The UNT Digital Library
Texas Register, Volume 23, Number 19, Pages 4421-4705, May 8, 1998
A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date:
May 8, 1998
Creator:
Texas. Secretary of State.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
[Photograph 2012.201.B0398.0271]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "June Moery, Hennessey"
Date:
December 8, 1998
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Note from George W. Bush to Charles Francis, April 4, 1998]
A note from Governor and presidential candidate George W. Bush to Charles C. Francis that reads "Charles - Thanks for the writings. I have yet to digest the ideas". The note is written on George W. Bush "The State of Texas Governor" stationery.
Date:
April 8, 1998
Creator:
Bush, George W.
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Charles Francis to Governor Bush, June 8, 1998]
A letter from Charles C. Francis to Governor George W. Bush warning about how the GOP's spokesman Robert Black's smearing of the group 'Log Cabin Republicans' is not going to end well and that Bush needs to act. Francis gives Bush a heads up about upcoming responses in newspapers and demonstrations.
Date:
June 8, 1998
Creator:
Francis, Charles C.
Object Type:
Letter
System:
The UNT Digital Library
ICF quarterly report October-December 1998 volume 8, number 1
This issue of the ICF Quarterly Report focuses on the final section of the 192-arm, 1.8-MJ National Ignition Facility (NIF). We describe both technological advances necessary for optimal utilization of the delivered energy and the hohlraum physics resulting from extremely high energy densities. Two articles belong to the first category. The conversion of infrared light to ultraviolet occurs at the tripler in the NIF's Final Optics Assembly. It is then necessary to separate any unconverted (first- and second-harmonic) light from the tripled-frequency light passed to the target. Large-Aperture Color-Separation Gratings for Diverting Unconverted Light Away from the NIF Target describes the design and fabrication of novel diffraction gratings that fulfill this function. In both direct- and indirect-drive ICF, the symmetry of the capsule as it compresses is crucial. The NIF will have 48 clusters of four beams incident on targets. Optimization of Beam Angles for the National Ignition Facility (p. 15) presents the rationale used to assign beam angles for cylindrical indirect drive while still allowing direct-drive and tetrahedral indirect-drive experiments to be performed.
Date:
September 8, 1998
Creator:
Feit, M
Object Type:
Report
System:
The UNT Digital Library
In-vessel fluid flow measurements using thermocouples cross-correlation.
Fluid flow rate in high temperature and pressure vessels can be difficult to measure due to the associated harsh environment, inaccessible locations and pressure boundary integrity concerns. However, by using quick response miniature thermocouples to measure the naturally occurring temperature variations within the flow, the fluid velocity can be inferred from the transit time analysis. This flow measurement technique has other advantages such as the flow profile is not significantly disturbed, no additional flow restrictions introduced and the system fiction factor is not increased. Furthermore, since the measured flow rate is generally unaffected by the global system dynamics, such as heat increases or losses, as well as changes in the flow regimes, the location of the thermocouple pairs is extremely flexible. Due to the mentioned advantages, the thermocouple cross-correlation flow measurement method has been developed for use at the Purdue University Multi-Dimensional Integral Test Assembly (PUMA). Currently, thermocouple cross-correlation technique is used to measure the Reactor Pressure Vessel downcomer fluid velocity and the suppression pool in-vessel natural circulation velocity.
Date:
May 8, 1998
Creator:
NguyenLe, Q.
Object Type:
Article
System:
The UNT Digital Library
Low-temperature MOCVD growth of oriented PbZr{sub x}Ti{sub 1-x}O{sub 3} thin films on Si substrates.
Polycrystalline Pb(Zr{sub 0.6}Ti{sub 0.4})O{sub 3} (PZT) thin films, 3000-6000 {angstrom} thick, have been grown by metal-organic chemical vapor deposition (MOCVD) on (111)Pt/Ti/SiO{sub 2}/Si substrates at temperatures as low as 450-525 C. Random and (111)-oriented, or occasionally (100)-oriented, PZT films can be deposited directly on (111)Pt/Ti/SiO{sub 2}/Si. In addition, highly (100)-oriented films can be deposited consistently by using 150-250 {angstrom} thick (100)-oriented PbTiO{sub 3} (PT) or TiO{sub 2} as a template. Films were characterized by X-ray diffraction, electron microscopy, and electrical measurements. The as-grown (100)-oriented films on (111)Pt/TiSiO{sub 2}/Si substrates exhibited dielectric constants ({var_epsilon}{sub r}) of up to 600, remnant polarization (P{sub r}) of 40 {micro}C/cm{sup 2}, coercive field of 55 kV/cm, and breakdown field of 2-6 x 10{sub 7} V/m.
Date:
May 8, 1998
Creator:
Chen, N.
Object Type:
Article
System:
The UNT Digital Library
THE 15 LAYER SILICON DRIFT DETECTOR TRACKER IN EXPERIMENT 896.
Large linear silicon drift detectors have been developed and are in production for use in several experiments. Recently 15 detectors were used as a tracking device in BNL-AGS heavy ion experiment (E896). The detectors were successfully operated in a 6.2 T magnetic field. The behavior of the detectors, such as drift uniformity, resolution, and charge collection efficiency are presented. The effect of the environment on the detector performance is discussed. Some results from the experimental run are presented. The detectors performed well in an experimental environment. This is the first tracking application of these detectors.
Date:
November 8, 1998
Creator:
Pandy, S. U.
Object Type:
Article
System:
The UNT Digital Library
Basin Analysis of the Mississippi Interior Salt Basin and Petroleum System Modeling of the Jurassic Smackover Formation, Eastern Gulf Coastal Plain
The objective is to provide a comprehensive geologic analysis of the Mississippi Interior Salt Basin.
Date:
April 8, 1998
Creator:
Mancini, Ernest A.
Object Type:
Report
System:
The UNT Digital Library
National Ignition Facility start-up/operations engineering and special equipment construction health and safety plan
This document sets forth the responsibilities, interfaces, guidelines, rules, policy, and regulations for all workers involved in the S/O and SE construction, installation, and acceptance testing. This document is enforced from the first day that S/O and SE workers set foot on the NIF construction site until the end of the Project at Critical Decision 4. This document is applicable only to site activities, which are defined as those that occur within the perimeter of the fenced-off NIF construction zone and the Target Chamber Assembly Area (Helipad). The associated Special Equipment laydown and construction support areas listed in Appendix B are not under this plan; their safety provisions are discussed in the Appendix. Prototype and other support activities, such as the Amplifier Laboratory and Frame Assembly Unit assembly area, are not included in this plan. After completion of the Operational Readiness Review, the Facility Safety Procedure, Operational Safety Requirements, and Operational Safety Procedures are the governing safety documents for the operating facility. The S/O and SE project elements are required to implement measures that create a universal awareness of and promote safe job practices at the site. This includes all Lawrence Livermore National Laboratory (LLNL), Los Alamos National Laboratory, Sandia …
Date:
May 8, 1998
Creator:
Huddleston, P. C.
Object Type:
Report
System:
The UNT Digital Library
Photovoltaic module performance and durability following long-term field exposure
Our investigations of both new and field-aged photovoltaic modules have indicated that, in general, today's commercially available modules area highly reliable product. However, by using new test procedures, subtle failure mechanisms have also been identified that must be addressed in order to achieve 30-year module lifetimes. This paper summarizes diagnostic test procedures, results, and implications of in-depth investigations of the performance and durability characteristics of commercial modules after long-term field exposure. A collaborative effort with U.S. module manufacturers aimed at achieving 30-year module lifetimes is also described.
Date:
September 8, 1998
Creator:
Ellibee, D. E.; Hansen, B. R.; King, D. L.; Kratochvil, J. A. & Quintana, M. A.
Object Type:
Article
System:
The UNT Digital Library
BWR drywell behavior under steam blowdown.
Historically, thermal hydraulics analyses on Large Break Loss of Coolant Accidents (LOCA) have been focused on the transients within the reactor or steam generator. Few have studied the effects of steam blowdown on the containment building. This paper discusses some theoretical issues as well as presenting numerical and experimental results of the blowdown tests performed at the Purdue University Multi-Dimensional Integrated Test Assembly (PUMA).
Date:
May 8, 1998
Creator:
NguyenLe, Q.
Object Type:
Article
System:
The UNT Digital Library
Logistic Regression Applied to Seismic Discrimination
The usefulness of logistic discrimination was examined in an effort to learn how it performs in a regional seismic setting. Logistic discrimination provides an easily understood method, works with user-defined models and few assumptions about the population distributions, and handles both continuous and discrete data. Seismic event measurements from a data set compiled by Los Alamos National Laboratory (LANL) of Chinese events recorded at station WMQ were used in this demonstration study. PNNL applied logistic regression techniques to the data. All possible combinations of the Lg and Pg measurements were tried, and a best-fit logistic model was created. The best combination of Lg and Pg frequencies for predicting the source of a seismic event (earthquake or explosion) used Lg{sub 3.0-6.0} and Pg{sub 3.0-6.0} as the predictor variables. A cross-validation test was run, which showed that this model was able to correctly predict 99.7% earthquakes and 98.0% explosions for this given data set. Two other models were identified that used Pg and Lg measurements from the 1.5 to 3.0 Hz frequency range. Although these other models did a good job of correctly predicting the earthquakes, they were not as effective at predicting the explosions. Two possible biases were discovered which affect …
Date:
October 8, 1998
Creator:
Amindan, BG & Hagedorn, DN
Object Type:
Report
System:
The UNT Digital Library
On-loom, real-time, noncontact detection of fabric defects by ultrasonic imaging.
A noncontact, on-loom ultrasonic inspection technique was developed for real-time 100% defect inspection of fabrics. A prototype was built and tested successfully on loom. The system is compact, rugged, low cost, requires minimal maintenance, is not sensitive to fabric color and vibration, and can easily be adapted to current loom configurations. Moreover, it can detect defects in both the pick and warp directions. The system is capable of determining the size, location, and orientation of each defect. To further improve the system, air-coupled transducers with higher efficiency and sensitivity need to be developed. Advanced detection algorithms also need to be developed for better classification and categorization of defects in real-time.
Date:
September 8, 1998
Creator:
Chien, H. T.
Object Type:
Article
System:
The UNT Digital Library
Locals visit Getty Center
A newspaper clipping on the newly constructed Getty Center museum and during the opening in December, Dr. William McCarter and Dr. Jack Davis were there. McCarter and Davis, co-directors of North Texas Institute for Educators on the Visual Arts, visited the Getty Center because of the institutions's ties to UNT, NTIEVA is funded in part by the Getty Education.
Date:
February 8, 1998
Creator:
Breeding, Lucinda
Object Type:
Clipping
System:
The UNT Digital Library
Swedish art educators visit UNT, observe teaching methods
News from the University of North Texas, Office of Public Affairs and Information services, titled "Swedish art educators visit UNT, observe teaching methods." The news reads that a group of visual arts educators from Sweden will spend three days observing how UNT is working with schools, museums and galleries to incorporate art into the general classroom curricula. On October 19th, the group will visit the office of the university's North Texas Institute for Educators on the Visual Arts to learn about the institute's Transforming Education through the Arts Challenge. October 20th the group will visit the metroplex schools and on October 21st they will visit the museums and galleries. The news document states to contact Kelley Reese for inquires. A handwritten note at the top of the document reads, "Pam Stephens, MTIEVA."
Date:
October 8, 1998
Creator:
University of North Texas
Object Type:
Text
System:
The UNT Digital Library