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A Defense Budget Primer (open access)

A Defense Budget Primer

This report is a primer for those who wish to familiarize themselves with the defense budget process. The report defines basic defense budget-related terms, describes the structure of the defense budget, briefly reviews the budgeting process within the Department of Defense (DOD), and outlines the successive phases of the congressional defense budget process. It also provides a short review of the budget execution process. This report will be updated only in the event of significant changes to the defense budget process.
Date: December 9, 1998
Creator: Tyszkiewicz, Mary T. & Daggett, Stephen
Object Type: Report
System: The UNT Digital Library
The Wylie News (Wylie, Tex.), Vol. 52, No. 28, Ed. 1 Wednesday, December 9, 1998 (open access)

The Wylie News (Wylie, Tex.), Vol. 52, No. 28, Ed. 1 Wednesday, December 9, 1998

Weekly newspaper from Wylie, Texas that includes local, state and national news along with advertising.
Date: December 9, 1998
Creator: Engbrock, Chad B.
Object Type: Newspaper
System: The Portal to Texas History
Studies of electrolyte penetration in carbon anodes by NMR techniques. (open access)

Studies of electrolyte penetration in carbon anodes by NMR techniques.

A toroid cavity nuclear magnetic resonance (NMR) detector capable of recording radial concentration profiles, diffusion constants, and displacements of charge carriers was employed to investigate the lithium ion distribution in an electrochemical cell containing a carbonaceous material synthesized from pyrene and pillared clays as inorganic templates. A carbon rod was used in a control experiment to assign the Li{sup +} spectrum and to calibrate the one dimensional radial images.
Date: December 9, 1998
Creator: Sandi, G.
Object Type: Article
System: The UNT Digital Library
Carbons for lithium ion cells prepared using sepiolite as an inorganic template. (open access)

Carbons for lithium ion cells prepared using sepiolite as an inorganic template.

Carbon anodes for Li ion cells have been prepared by the in situ polymerization of olefins such as propylene and ethylene in the channels of sepiolite clay mineral. Upon dissolution of the inorganic framework, a disordered carbon was obtained. The carbon was tested as anode in coin cells, yielding a reversible capacity of 633 mAh/g, 1.70 times higher than the capacity delivered by graphitic carbon, assuming 100% efficiency. The coulombic efficiency was higher than 90%.
Date: December 9, 1998
Creator: Sandi, G.
Object Type: Article
System: The UNT Digital Library
Effective Use of Molecular Recognition in Gas Sensing: Results from Acoustic Wave and In-Situ FTIR Measurements (open access)

Effective Use of Molecular Recognition in Gas Sensing: Results from Acoustic Wave and In-Situ FTIR Measurements

To probe directly the analyte/film interactions that characterize molecular recognition in gas sensors, we recorded changes to the in-situ surface vibrational spectra of specifically fictionalized surface acoustic wave (SAW) devices concurrently with analyte exposure and SAW measurement of the extent of sorption. Fourier-lmnsform infrared external- reflectance spectra (FTIR-ERS) were collected from operating 97-MH2 SAW delay lines during exposure to a range of analytes as they interacted with thin-film coatings previously shown to be selective: cyclodextrins for chiral recognition, Ni-camphorates for Lewis bases such as pyridine and organophosphonates, and phthalocyanines for aromatic compounds. In most cases where specific chemical interactions-metal coordination, "cage" compound inclusion, or z stacking-were expected, analyte dosing caused distinctive changes in the IR spectr~ together with anomalously large SAW sensor responses. In contrast, control experiments involving the physisorption of the same analytes by conventional organic polymers did not cause similar changes in the IR spectra, and the SAW responses were smaller. For a given conventional polymer, the partition coefficients (or SAW sensor signals) roughly followed the analyte fraction of saturation vapor pressure. These SAW/FTIR results support earlier conclusions derived from thickness-shear mode resonator data.
Date: December 9, 1998
Creator: Bodenhofer, K,; Gopel, W.; Hierlemann, A. & Ricco, A.J.
Object Type: Article
System: The UNT Digital Library
An Optimizing Algorithm for Automating Lifecycle Assembly Processes (open access)

An Optimizing Algorithm for Automating Lifecycle Assembly Processes

Designing products for ~ assembly and disassembly during its entire Iifecycle for purposes including service, field repair, upgrade, and disposal is a process that involves many disciplines. In additiou finding the best solution often involves considering the design as a whole and by considering its intended Iifecycle. DifFerent goals and cortstmints (compared to initial assembly) require us to re-visit the significant fi,mdamental assumptions and methods that underlie current assembly planning techniques. Previous work in this area has been limited to either academic studies of assembly planning or applied studies of lifecycle assembly processes, which give no attention to automatic planning. It is believed that merging these two areas will result in a much greater ability to design for, analyze, and optimize the disassembly and assembly processes.
Date: December 9, 1998
Creator: Brown, R.G. & Calton, T.L.
Object Type: Article
System: The UNT Digital Library
Removal of Contaminants from Equipment and Debris and Waste Minimization Using the TECHXTRACT(TM) Technology (open access)

Removal of Contaminants from Equipment and Debris and Waste Minimization Using the TECHXTRACT(TM) Technology

From September, 1996 through July, 1997, EET, Inc. conducted a series of experiments under a U.S. Department of Energy (DOE) Program Research and Development Agreement (PRDA). This project, entitled "Removal of Contaminants from Equipment and Debris and Waste Minimization Using the TECHXTRACT â Technology" was conducted under DOE Contract DE-AC21- 96MC33138, administered by the Federal Energy Technology Center. The contract is divided into two phases - a base phase during which bench scale testing was conducted; and an optional phase for a field demonstration of a full-scale system. This report documents the results from the base phase of the contract. The base phase included the following major elements: - Evaluation of the effectiveness of various decontamination options, using both surrogate and radioactively contaminated samples. - Evaluation of various methods for the treatment of the secondary waste streams from the preferred decontamination system(s). - Evaluation of decontamination effectiveness for concrete rubble. - Preliminary engineering design and cost estimation for a full-scale system. - Preliminary economic analysis of the proposed system versus other currently available options for disposition of the materials. Results from the base phase, which are described in the following report, are very positive. Testing has shown that free release …
Date: December 9, 1998
Creator: Schwitzgebel, Jorg; Schwitzgebel, Klaus; Bonem, Michael W. & Borah, Ronald E.
Object Type: Report
System: The UNT Digital Library
Absolute Intensities of the Vacuum Ultraviolet Spectra in a Metal-Etch Plasma Processing Discharge (open access)

Absolute Intensities of the Vacuum Ultraviolet Spectra in a Metal-Etch Plasma Processing Discharge

In this paper we report absolute intensities of vacuum ultraviolet and near ultraviolet emission lines (4.8 eV to 18 eV ) for aluminum etching discharges in an inductively coupled plasma reactor. We report line intensities as a function of wafer type, pressure, gas mixture and rf excitation level. IrI a standard aluminum etching mixture containing C12 and BC13 almost all the light emitted at energies exceeding 8.8 eV was due to neutral atomic chlorine. Optical trapping of the WV radiation in the discharge complicates calculations of VUV fluxes to the wafer. However, we see total photon fluxes to the wailer at energies above 8.8 eV on the order of 4 x 1014 photons/cm2sec with anon- reactive wafer and 0.7 x 10 `4 photons/cm2sec with a reactive wtier. The maj ority of the radiation observed was between 8.9 and 9.3 eV. At these energies, the photons have enough energy to create electron-hole pairs in Si02, but may penetrate up to a micron into the Si02 before being absorbed. Relevance of these measurements to vacuum-W photon-induced darnage of Si02 during etching is discussed.
Date: December 9, 1998
Creator: Woodworth, J. R.; Blain, M. G.; Jarecki, R. L.; Hamilton, T. W. & Aragon, B. P.
Object Type: Article
System: The UNT Digital Library
Advancing Design-for-Assembly: The Next Generation in Assembly Planning (open access)

Advancing Design-for-Assembly: The Next Generation in Assembly Planning

At the 1995 IEEE Symposium on Assembly and Task Planning, Sandia National Laboratories introduced the Archimedes 2 Software Tool [2]. The system was described as a second-generation assembly planning system that allowed preliminmy application of awembly planning for industry, while solidly supporting further research in planning techniques. Sandia has worked closely with indust~ and academia over the last four years. The results of these working relationships have bridged a gap for the next generation in assembly planning. Zke goal of this paper is to share Sandia 's technological advancements in assembly planning over the last four years and the impact these advancements have made on the manufacturing communip.
Date: December 9, 1998
Creator: Calton, T.L.
Object Type: Article
System: The UNT Digital Library
Group-III Nitride Etch Selectivity in BCl(3)/Cl(2) ICP Plasmas (open access)

Group-III Nitride Etch Selectivity in BCl(3)/Cl(2) ICP Plasmas

Patterning the group-IH nitrides has been challenging due to their strong bond energies and relatively inert chemical nature as compared to other compound semiconductors. Plasma etch processes have been used almost exclusively to pattern these films. The use of high-density plasma etch systems, including inductively coupled plasmas (ICP), has resulted in relatively high etch rates (often greater than 1.0 pmhnin) with anisotropic profiles and smooth etch morphologies. However, the etch mechanism is often dominated by high ion bombardment energies which can minimize etch selectivity. The use of an ICP-generated BCl~/C12 pkyma has yielded a highly versatile GaN etch process with rates ranging from 100 to 8000 A/rnin making this plasma chemistry a prime candidate for optimization of etch selectivity. In this study, we will report ICP etch rates and selectivities for GaN, AIN, and InN as a function of BCl~/Clz flow ratios, cathode rf-power, and ICP-source power. GaN:InN and GaN:AIN etch selectivities were typically less than 7:1 and showed the strongest dependence on flow ratio. This trend maybe attributed to faster GaN etch rates observed at higher concentrations of atomic Cl which was monitored using optical emission spectroscopy (OES). ~E~~~~f:~ INTRODUCTION DEC j 4898 Etch selectivi
Date: December 9, 1998
Creator: Abernathy, C.R.; Han, J.; Hong, J.; Lester, L.F.; Pearton, S.J.; Shul, R.J. et al.
Object Type: Article
System: The UNT Digital Library
A Framework for Automating Cost Estimates in Assembly Processes (open access)

A Framework for Automating Cost Estimates in Assembly Processes

When a product concept emerges, the manufacturing engineer is asked to sketch out a production strategy and estimate its cost. The engineer is given an initial product design, along with a schedule of expected production volumes. The engineer then determines the best approach to manufacturing the product, comparing a variey of alternative production strategies. The engineer must consider capital cost, operating cost, lead-time, and other issues in an attempt to maximize pro$ts. After making these basic choices and sketching the design of overall production, the engineer produces estimates of the required capital, operating costs, and production capacity. 177is process may iterate as the product design is refined in order to improve its pe~ormance or manufacturability. The focus of this paper is on the development of computer tools to aid manufacturing engineers in their decision-making processes. This computer sof~are tool provides aj?amework in which accurate cost estimates can be seamlessly derivedfiom design requirements at the start of any engineering project. Z+e result is faster cycle times through first-pass success; lower ll~e cycie cost due to requirements-driven design and accurate cost estimates derived early in the process.
Date: December 9, 1998
Creator: Calton, T. L. & Peters, R. R.
Object Type: Article
System: The UNT Digital Library
Acid-Base Interactions at the Molecular Level: Adhesion and Friction Studies with Interfacial Force Microscopy (open access)

Acid-Base Interactions at the Molecular Level: Adhesion and Friction Studies with Interfacial Force Microscopy

To examine the forces of acid-base adhesive interactions at the molecular level, we utilize the scanning probe Interracial Force Microscope (IFM). Unlike cantilever-based atomic force microscopes, the EM is a non-compliant, mechanically stable probe that provides a complete adhesive profile without jump-to-contact. In this way, we are able to quantitatively measure the work of adhesion and bond energies at well-defined, nanometer-scale single asperity contacts. In particular, we will discuss the displacement-controlled adhesive forces between self-assembled monolayer of functionalized alkanethiols strongly bound to a gold substrate and a similarly functionalized tip. We also discuss a method utilizing decoupled lateral and normal force sensors to simultaneously observe the onset of both friction and chemical bond formation. Measurements show that friction can be directly attributed to bond formation and rupture well before repulsive contact.
Date: December 9, 1998
Creator: Burns, A. R.; Carpick, R. W.; Houston, J. E. & Michalske, T. A.
Object Type: Article
System: The UNT Digital Library
Observation of resonant energy transfer between identical-frequency laser beams (open access)

Observation of resonant energy transfer between identical-frequency laser beams

Enhanced transmission of a low intensity laser beam is observed when crossed with an identical-frequency beam in a plasma with a flow velocity near the ion sound speed. The time history of the enhancement and the dependence on the flow velocity strongly suggest that this is due to energy transfer between the beams via a resonant ion wave with zero frequency in the laboratory frame. The maximum energy transfer has been observed when the beams cross in a region with Mach 1 flow. The addition of frequency modulation on the crossing beams is seen to reduce the energy transfer by a factor of two. Implications for indirect-drive fusion schemes are discussed.
Date: December 9, 1998
Creator: Afeyan, B. B.; Cohen, B. I.; Estabrook, K. G.; Glenzer, S. H.; Joshi, C.; Kirkwood, R. K. et al.
Object Type: Article
System: The UNT Digital Library
Footprint Reduction Process: Using Remote Sensing and GIS Technologies to Identify Non-Contaminated Land Parcels on the Oak Ridge Reservation National Priorities List Site (open access)

Footprint Reduction Process: Using Remote Sensing and GIS Technologies to Identify Non-Contaminated Land Parcels on the Oak Ridge Reservation National Priorities List Site

In 1989, the Agency for Toxic Substances and Disease Registry evaluated the entire 35,000-acre U. S: Department of Energy (DOE) Oak Ridge Reservation (ORR, located in Oak Ridge, TN) and placed it on the National Priorities List (NPL), making the ORR subject to Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) regulations. Although much of the ORR has not been impacted by previous federal activities, without investigation it is difficult to discern which parcels of land are free of surface contamination. In 1996, the DOE Oak Ridge Environmental Management Program (EM) funded the Footprint Reduction Project to: 1) develop a process to study the large areas of the ORR that are believed to be free of surface contamination and 2) initiate the delisting of the "clean" areas from the NPL. Although this project's goals do not include the transfer of federal property to non-federal entities, the process development team aimed to provide a final product with multiple uses. Therefore, the process was developed to meet the requirements of NPL delisting and the transfer of non- contaminated federal lands to future land users. Section 120 (h) of the CERCLA law identifies the requirements for the transfer of federal property that is …
Date: December 9, 1998
Creator: Halsey, P. A.; Kendall, D. T.; King, A. L. & Storms, R. A.
Object Type: Article
System: The UNT Digital Library
Mine seismicity and the Comprehensive Nuclear Test Ban Treaty (open access)

Mine seismicity and the Comprehensive Nuclear Test Ban Treaty

Surface and underground mining operations generate seismic ground motions which are created by chemical explosions and ground failures. It may come as a surprise to some that the ground failures (coal bumps, first caves, pillar collapses, rockbursts, etc.) can send signals whose magnitudes are as strong or stronger than those from any mining blast. A verification system that includes seismic, infrasound, hydroacoustic and radionuclide sensors is being completed as part of the CTBT. The largest mine blasts and ground failures will be detected by this system and must be identified as distinct from signals generated by small nuclear explosions. Seismologists will analyze the seismic records and presumably should be able to separate them into earthquake-like and non earthquake-like categories, using a variety of so-called seismic discriminants. Non-earthquake essentially means explosion- or implosion-like. Such signals can be generated not only by mine blasts but also by a variety of ground failures. Because it is known that single-fired chemical explosions and nuclear explosion signals of the same yield give very similar seismic records, the non-earthquake signals will be of concern to the Treaty verification community. The magnitude of the mine-related events is in the range of seismicity created by smaller nuclear explosions …
Date: December 9, 1998
Creator: Chiappetta, F.; Heuze, F.; Walter, W.; Hopler, R.; Hsu, V.; Martin, B. et al.
Object Type: Report
System: The UNT Digital Library
Věstník (Temple, Tex.), Vol. 86, No. 47, Ed. 1 Wednesday, December 9, 1998 (open access)

Věstník (Temple, Tex.), Vol. 86, No. 47, Ed. 1 Wednesday, December 9, 1998

Weekly Czech and English language newspaper from Temple, Texas published as the official organ of the Slavonic Benevolent Order of the State of Texas that includes news of interest to members along with advertising.
Date: December 9, 1998
Creator: Vanicek, Brian
Object Type: Newspaper
System: The Portal to Texas History
Dynamic behavior of semivolatile organic compounds in indoor air (open access)

Dynamic behavior of semivolatile organic compounds in indoor air

None
Date: December 9, 1998
Creator: Van Loy, M.D.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Argonne National Laboratory Institutional Plan FY 1999 - FY 2004. (open access)

Argonne National Laboratory Institutional Plan FY 1999 - FY 2004.

The ''Institutional Plan'' is the culmination of Argonne's annual planning cycle. This document outlines the Laboratory's plans for the optimal development of its research programs and support operations, in the context of national research and development needs, the missions of the Department of Energy and Argonne National Laboratory, and expected resource constraints. The ''Institutional Plan'' is the product of internal planning and extensive discussions with DOE managers.
Date: December 9, 1998
Creator: Beggs, S. D.
Object Type: Report
System: The UNT Digital Library
Improved single sector supersymmetry breaking (open access)

Improved single sector supersymmetry breaking

Building on recent work by N. Arkani-Hamed and the present authors, we construct realistic models that break supersymmetry dynamically and give rise to composite quarks and leptons, all in a single strongly-coupled sector. The most important improvement compared to earlier models is that the second-generation composite states correspond to dimension-2 ''meson'' operators in the ultraviolet. This leads to a higher scale for flavor physics, and gives a completely natural suppression of flavor-changing neutral currents. We also construct models in which the hierarchy of Yukawa couplings is explained by the dimensionality of composite states. These models provide an interesting and viable alternative to gravity- and gauge-mediated models. The generic signatures are unification of scalar masses with different quantum numbers at the compositeness scale, and lighter gaugino, Higgsino, and third-generation squark and slepton masses. We also analyze large classes of models that give rise to both compositeness and supersymmetry breaking, based on gauge theories with confining, fixed-point, or free-magnetic dynamics.
Date: December 9, 1998
Creator: Luty, Markus A. & Terning, John
Object Type: Article
System: The UNT Digital Library
High-Efficiency Thin-Film Cadmium Telluride Photovoltaic Cells; Final Subcontract Report, Final Technical Report, 21 January 1994-31 March 1998 (open access)

High-Efficiency Thin-Film Cadmium Telluride Photovoltaic Cells; Final Subcontract Report, Final Technical Report, 21 January 1994-31 March 1998

This report describes work performed during the past year by The University of Toledo photovoltaics group. Researchers continued to develop rf sputtering for CdS/CdTe thin-film solar cells and to optimize the post-deposition process steps to match the characteristics of the sputtering process. During the fourth phase of the present contract, we focused on determining factors that limit the efficiency in our ''all-sputtered'' thin-film CdTe solar cells on soda-lime glass. These issues include controlling CdS/CdTe interdiffusion, understanding the properties of the CdS{sub x}Te{sub 1-x} alloy, optimizing process conditions for CdCl{sub 2} treatments, manipulating the influence of ion bombardment during rf sputtering, and understanding the role of copper in quenching photoluminescence and carrier lifetimes in CdTe. To better understand the important CdS/CdTe interdiffusion process, we have continued our collaboration with the University at Buffalo and Brookhaven National Synchrotron Light Source in measurements using grazing-incidence X-rays. Interdiffusion results in the formation of the ternary alloy material CdS{sub x}Te{sub 1-x} at or near the heterojunction, where its properties are critical to the operation of the solar cell. We have placed significant effort on characterizing this alloy, an effort begun in the last phase. A complete set of films spanning the alloy range, prepared by …
Date: December 9, 1998
Creator: Compaan, A. D. & Bohn, R. G.
Object Type: Report
System: The UNT Digital Library
An Endangered Species Act Issue for Southeastern Florida: Johnson’s Seagrass (open access)

An Endangered Species Act Issue for Southeastern Florida: Johnson’s Seagrass

None
Date: December 9, 1998
Creator: Buck, Eugene H.
Object Type: Report
System: The UNT Digital Library
[News Clip: Winter weather] captions transcript

[News Clip: Winter weather]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, covering a news story about
Date: December 9, 1998, 10:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
The Clifton Record (Clifton, Tex.), Vol. 103, No. 98, Ed. 1 Wednesday, December 9, 1998 (open access)

The Clifton Record (Clifton, Tex.), Vol. 103, No. 98, Ed. 1 Wednesday, December 9, 1998

Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date: December 9, 1998
Creator: Smith, W. Leon
Object Type: Newspaper
System: The Portal to Texas History
Midweek Picture (San Diego, Tex.), Vol. 13, No. 64, Ed. 1 Wednesday, December 9, 1998 (open access)

Midweek Picture (San Diego, Tex.), Vol. 13, No. 64, Ed. 1 Wednesday, December 9, 1998

Semiweekly newspaper from San Diego, Texas that includes local, state, and national news along with advertising.
Date: December 9, 1998
Creator: Cardenas, Alfredo E.
Object Type: Newspaper
System: The Portal to Texas History