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Altus Times (Altus, Okla.), Vol. 99, No. 266, Ed. 1 Wednesday, January 20, 1999
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 20, 1999
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Alvin Advertiser (Alvin, Tex.), Ed. 1 Wednesday, January 20, 1999
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
January 20, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Band Structure of InGaAsN Alloys and Effects of Presure
InGaAsN is a new semiconductor alloy system with the remarkable property that the inclusion of only 2% nitrogen reduces the bandgap by more than 30%. In order to help understand the physical origin of this extreme deviation from the typically observed nearly linear dependence of alloy properties on concentration, we have investigated the pressure dependence of state energies using both experimental and theoretical methods. the excited We report measurements of the low temperature photoluminescence of the material for pressures between ambient and 110 kbar. We also describe a simple, density- functional-theory-based approach to calculating the pressure dependence of low lying excitation energies for low concentration alloys. The theoretically predicted pressure dependence of the bandgap is in excellent agreement with the experimental data. Based on the results of our calculations, we suggest an explanation for the strongly non-linear pressure dependence of the bandgap that, surprisingly, does not involve a nitrogen impurity state.
Date:
January 20, 1999
Creator:
Allerman, A. A.; Jones, E. D.; Kurtz, S. R.; Modine, N. A.; Tozer, S. T.; Wei, X. et al.
Object Type:
Article
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 77, No. 70, Ed. 1 Wednesday, January 20, 1999
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
January 20, 1999
Creator:
Dobbs, Gary
Object Type:
Newspaper
System:
The Portal to Texas History
Carrier Noise Reduction in Speckle Correlation Interferometry by a Unique Averaging Technique
We present experimental result of carrier speckle noise averaging by a novel approach to generate numerous identical correlation fringes with randomly different speckles. The surface under study is sprayed with a new dry paint or a layer each time for the repetitive experiments to generate randomly different surfaces of the carrier speckle patterns.
Date:
January 20, 1999
Creator:
Pechersky, M. J.
Object Type:
Article
System:
The UNT Digital Library
Charge Accumulation at a Threading Edge Dislocation in GaN
We have performed Monte Carlo calculations to determine the charge accumulation on threading edge dislocations in GaN as a function of the dislocation density and background dopant density. Four possible core structures have been examined, each of which produces defect levels in the gap and may therefore act as electron or hole traps. Our results indicate that charge accumulation, and the resulting electrostatic interactions, can change the relative stabilities of the different core structures. Structures having Ga and N vacancies at the dislocation core are predicted to be stable under nitrogen-rich and gallium-rich growth conditions, respectively. Due to dopant depletion at high dislocation density and the multitude of charge states, the line charge exhibits complex crossover behavior as the dopant and dislocation densities vary.
Date:
January 20, 1999
Creator:
Leung, K.; Stechel, E. B. & Wright, A. F.
Object Type:
Article
System:
The UNT Digital Library
Clamping of the Linewidth Enhancement Factor in Narrow Quantum-Well GRINSCH Semiconductor Lasers
The linewidth enhancement factor in single quantum-well GRINSCH semiconductor lasers is investigated theoretically and experimentally. For thin wells a small linewidth enhancement factor is obtained which clamps with increasing carrier density, in contrast to the monotonous increase observed for thicker wells. Microscopic many-body calculations reproduce the experimental observations attributing the clamping to a subtle interplay between excitation dependent gain shifts and carrier population distributions.
Date:
January 20, 1999
Creator:
Bossert, D.; Chow, W.W.; Hader, J.; Koch, S.W.; Moloney, J.V. & Stohls, J.
Object Type:
Article
System:
The UNT Digital Library
The Clifton Record (Clifton, Tex.), Vol. 104, No. 6, Ed. 1 Wednesday, January 20, 1999
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
January 20, 1999
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
The Colony Courier (The Colony, Tex.), Vol. 2, No. 11, Ed. 1 Wednesday, January 20, 1999
Weekly newspaper from The Colony, Texas that includes local, state, and national news along with advertising.
Date:
January 20, 1999
Creator:
Chiniewicz, Susan
Object Type:
Newspaper
System:
The Portal to Texas History
[Comments on Whether EPA Interim Guidance Is a Rule Under the Congressional Review Act]
Other written product issued by the General Accounting Office with an abstract that begins "GAO provided information on whether interim guidance for investigating Title VI administrative complaints challenging permits issued by the Environmental Protection Agency is a rule under the Congressional Review Act portion of the Small Business Regulatory Enforcement Act (SBREFA). GAO held that, irrespective of whether or not in isolation the second portion of the interim guidance is properly viewed as procedural, considered as a whole, the interim guidance clearly affects the rights of non-agency parties. Thus, it constitutes a rule under SBREFA subject to congressional review."
Date:
January 20, 1999
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
The Cuero Record (Cuero, Tex.), Vol. 105, No. 3, Ed. 1 Wednesday, January 20, 1999
Weekly newspaper from Cuero, Texas that includes local, state, and national news along with advertising.
Date:
January 20, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Development of a dispatchable PV peak shaving system. Final report on PV:BONUS Phase 2 activities
In July 1993, the Delmarva Power and Light Company (now Conectiv, Inc.) was awarded a contract for the development of a Dispatchable Photovoltaic Peak Shaving System under the US Department of Energy PV:BONUS Program. The rationale for the dispatchable PV peak shaving system is based on the coincidence between the solar resource and the electrical load in question. Where poor coincidence exists, a PV array by itself does little to offset peak demands. However, with the addition of a relatively small amount of energy storage, the energy from the PV array can be managed and the value of the PV system increases substantially. In Phase 2, Delmarva Power continued the refinement of the system deployed in Phase 1. Four additional dispatchable PV peak shaving systems were installed for extended testing and evaluation at sites in Delaware, Maryland, Wisconsin and North Carolina. A second type of system that can be used to provide back-up power as well as peak shaving was also developed in Phase 2. This PV-UPS system used a packaging approach nearly identical to the PV peak shaving system, although there were significant differences in the design of the power electronics and control systems. Conceptually, the PV-UPS system builds …
Date:
January 20, 1999
Creator:
Ferguson, W.D. & Nigro, R.M.
Object Type:
Report
System:
The UNT Digital Library
Development of Standards for Characterization of Cathodoluminescence Efficiency
Cathodolurninescence (CL) characterization in a demountable vacuum chamber is an important benchmarking tool for flat-panel display phosphors and screens. The proper way to perform these measurements is to minimize the effects of secondary electrons, excite the phosphor/screen with a uniform beam profile, and maintain a clean vacuum environment. CL measurements are important for preliminary evaluation and lifetesting of phosphor powders and screens prior to incorporation into the FPD. A survey of many CL characterization systems currently in use revealed the myriad of spectroradiometers, colorimeters, electron guns, vacuum pumps, mass spectrometers, etc. that introduce many avenues for error that are often difficult to isolate. A preliminary round-robin experiment was coordinated by Sandia and invoIved five other research groups. The purpose of this experiment was to obtain an indication of equipment capabilities and instrument variations, as well as reliability and consistency of results. Each group was asked to measure the luminence (cd/m{sup 2}) and chromaticity coordinates of a Y{sub 3}Al{sub 2}Ga{sub 3}O{sub 12}: Tb pellet and calculate the luminous efficiency. Pellets were chosen in order to reduce errors associated with processing and handling of powders or screens. Some of the data reported in this experiment were in good agreement while others differed …
Date:
January 20, 1999
Creator:
Shea, L.E. & Walko, R.J.
Object Type:
Article
System:
The UNT Digital Library
[ Email Exchange on Evaluation Criteria]
A comprehensive email conversation strategically discussing the evaluation criteria for the case study schools.
Date:
January 20, 1999, 2:02 p.m.
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
Evaluating and managing Cold War era historic properties : the cultural significance of U.S. Air Force defensive radar systems.
Aircraft and later missile radar early warning stations played an important role in the Cold War. They are associated with important technological, social, political, and military themes of the Cold War and are worthy of preservation. The scope and scale of these systems make physical preservation impractical, but the U.S. Air Force program of historical evaluation and documentation of these systems will provide valuable information to future generations studying this historic period.
Date:
January 20, 1999
Creator:
Whorton, M.
Object Type:
Article
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Wednesday, January 20, 1999
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 20, 1999
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Federal Aviation Administration: Issues Concerning the Reauthorization of Aviation Programs
Testimony issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on the issues being considered in the proposed legislation to reauthorize the Federal Aviation Administration's (FAA) aviation programs, focusing on: (1) air traffic control modernization program; (2) efforts to make its computer systems ready for the year 2000; (3) Airport Improvement Program (AIP) funding; (4) aviation safety and security measures; and (5) efforts to enhance aviation competition."
Date:
January 20, 1999
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
The Gilmer Mirror (Gilmer, Tex.), Vol. 122, No. 6, Ed. 1 Wednesday, January 20, 1999
Semiweekly newspaper from Gilmer, Texas that includes local, state, and national news along with advertising.
Date:
January 20, 1999
Creator:
Overton, Mac
Object Type:
Newspaper
System:
The Portal to Texas History
Global Climate Change: Carbon Emissions and End-Use Energy Demand
This report presents an analysis of the potential impacts of the Kyoto Protocol on U.S. energy demand. The analysis focuses on 27 common end-uses — light duty vehicles, residential space heating, industrial direct process heat, etc. — that describe the way energy is used in the United States
Date:
January 20, 1999
Creator:
Rowberg, Richard E.
Object Type:
Report
System:
The UNT Digital Library
Hidden Challenges to MEMS Commercialization: Design Realization and Reliability Assurance
The successful commercialization of MicroElectroMechanical Systems (MEMS) is an essential prerequisite for their implementation in many critical government applications. Several unique challenges must be overcome to achieve this widespread commercialization. Challenges associated with design realization and reliability assurance are discussed, along with approaches taken by Sandia to successfully overcome these challenges.
Date:
January 20, 1999
Creator:
McWhorter, P. J.; Miller, S. L.; Miller, W. M.; Rodger, M. S. & Yarberry, V. R.
Object Type:
Article
System:
The UNT Digital Library
Influence of pulse width and target density on pulsed laser deposition of thin YBaCuO film.
We have studied the effects of temporal pulse width and target density on the deposition of thin films of YBaCuO. A 248nm excimer laser and an 825nm Ti-sapphire laser were used to conduct the experiments with pulse widths of 27 ns, 16 ns, and 150 fs, and target densities of 80% and 90%. Scanning electron microscope photomicrographs and profilometer traces show a striking difference between nanosecond and femtosecond laser irradiation. Shortening the pulse width reduced particulate formation, provided stoichiometry, and improved the film properties. Decreasing the target density raised the ablation rate, produced thicker but nonuniform films, and reduced particulate formation.
Date:
January 20, 1999
Creator:
Vikram, S.
Object Type:
Article
System:
The UNT Digital Library
It Takes More Than a Cow Bell to Lead a Team
Leading an audit team goes beyond performance of the duties outlined in any requirement or training course. Anyone can memorize the steps to begin and to complete an audit, but it takes leadership to capitalize on the strengths of each team member and to interact with the auditee. Leadership has been written about and studied for many years. Principles and ideas developed by Covey, Senge, Peters, Blanchard, Hersey, Drucker, Yuki and many, many more but they all come down to some basic issues. There is no magic formula. There are theories and models that when applied work in one situation. Some theories and methodologies work better than others depending on the situation. The presentation today looks at leadership from the perspective of the lead auditor, as he/she has to guide the audit process and deal with many personalities from the audit team to the people being interviewed, Each situation is different, each audit team is different, each audit is unique. The basic principles are applied but it takes understanding leadership to have a successful audit. Applying the Situational Leadership model will enable you to be a good and effective leader and capitalize on the strengths of each team member. It …
Date:
January 20, 1999
Creator:
Sickles, L. D.
Object Type:
Article
System:
The UNT Digital Library
[John David Thomas, memorial program]
Memorial program for John David Thomas, who lived from June 20, 1947 - January 20, 1999.
Date:
January 20, 1999
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
[John Thomas obituary]
An obituary for John Thomas by Resource Center Dallas.
Date:
January 20, 1999
Creator:
Resource Center Dallas
Object Type:
Text
System:
The UNT Digital Library