Supporting Dynamic Ad hoc Collaboration Capabilities (open access)

Supporting Dynamic Ad hoc Collaboration Capabilities

Modern HENP experiments such as CMS and Atlas involve as many as 2000 collaborators around the world. Collaborations this large will be unable to meet often enough to support working closely together. Many of the tools currently available for collaboration focus on heavy-weight applications such as videoconferencing tools. While these are important, there is a more basic need for tools that support connecting physicists to work together on an ad hoc or continuous basis. Tools that support the day-to-day connectivity and underlying needs of a group of collaborators are important for providing light-weight, non-intrusive, and flexible ways to work collaboratively. Some example tools include messaging, file-sharing, and shared plot viewers. An important component of the environment is a scalable underlying communication framework. In this paper we will describe our current progress on building a dynamic and ad hoc collaboration environment and our vision for its evolution into a HENP collaboration environment.
Date: July 14, 2003
Creator: Agarwal, Deborah A. & Berket, Karlo
Object Type: Article
System: The UNT Digital Library
On the Increasing Fragility of Human Teeth with Age: ADeep-Ultraviolet Resonance Raman Study (open access)

On the Increasing Fragility of Human Teeth with Age: ADeep-Ultraviolet Resonance Raman Study

Ultraviolet resonance Raman spectroscopy (UVRRS) using 244nm excitation was used to investigate the impact of aging on humandentin. The intensity of a spectroscopic feature from the peptide bondsin the collagen increases with tissue age, similar to a finding reportedpreviously for human cortical bone.
Date: July 14, 2006
Creator: Ager, J. W., III; Nalla, R. K.; Balooch, G.; Kim, G.; Pugach, M.; Habelitz, S. et al.
Object Type: Article
System: The UNT Digital Library
Top-of-Rail lubricant (open access)

Top-of-Rail lubricant

Analysis of the volatile and semivolatile fractions collected after use of the TOR lubricant indicated that other than contaminants in the collection laboratory, no compounds on the EPA's Target Compound Lists (Tables 2 and 5) were detected in these fractions. The data of these qualitative analyses, given in the various tables in the text, indicate only the relative amounts of the tentatively identified compounds. The authors recommend that quantitative analysis be performed on the volatile and semivolatile fractions to allow confirmation of the tentatively identified compounds and to obtain absolute amounts of the detected compounds. Additionally, the semivolatile fraction should be analyzed by liquid chromatography/mass spectrometry to identify compounds that are not chromatographable under the temperature program used for determination of semivolatile compounds. Introducing the top-of-rail (TOR) lubricant into the wheel/rail interface results in a reduction of almost 60% of lateral friction force over the forces encountered under dry conditions. This reveals good potential for energy savings, as well as wear reduction, for railroad companies. In TOR lubrication, an increase in the angle of attack and axle load results in increased lateral friction and rate of lubricant consumption. The most efficient TOR lubricant quantity to be used in the wheel/rail …
Date: July 14, 2000
Creator: Alzoubi, M. F.; Fenske, G. R.; Erck, R. A. & Boparai, A. S.
Object Type: Report
System: The UNT Digital Library
House Committee on Standards of Official Conduct: A Brief History of Its Evolution and Jurisdiction (open access)

House Committee on Standards of Official Conduct: A Brief History of Its Evolution and Jurisdiction

This report provides a history of the creation and evolution of the House Committee on Standards of Official Conduct. Also known as the House Ethics Committee and the Committee on Standards, it was first established as a select committee in 1966. It became a standing committee in 1967. Since that time, it has undergone two major reorganizations, first in 1989, and again in 1997.
Date: July 14, 2004
Creator: Amer, Mildred
Object Type: Report
System: The UNT Digital Library
Ultrathin ta-C films on heads depositied by twist-filteredcathodic arc carbon plasmas (open access)

Ultrathin ta-C films on heads depositied by twist-filteredcathodic arc carbon plasmas

It is known that filtered cathodic-arc-deposited ta-C films have outstanding properties even within the family of diamondlike materials. However, filtering of macroparticles is usually incomplete or accompanied by significant plasma losses. Ongoing research effort is directed towards the following goals: (1) complete elimination of macro- and nanoparticles from the vacuum arc plasma, (2) increase of plasma utilization in the cathodic-arc and macroparticle-filter system, (3) precise control and reproducibility of film deposition, and (4) synthesis of ultrathin films (< 5 nm) that meet requirements of the magnetic storage industry. The development of new filters, in particular the ''Twist Filter'', enables cathodic arc plasma deposition to synthesize ultrathin ta-C films of 3 nm on heads that pass corrosion and other relevant tests. We describe the Twist Filter system and report about recent ta-C tests results. In light of these results, even thinner films seem to be possible.
Date: July 14, 2000
Creator: Anders, Andre & Ryan, Francis W.
Object Type: Article
System: The UNT Digital Library
International Criminal Court Cases in Africa: Status and Policy Issues (open access)

International Criminal Court Cases in Africa: Status and Policy Issues

This report provides background on current International Criminal Court (ICC) cases and examines issues raised by the ICC's actions in Africa, including the potential deterrence of future abuses and the potential impact on African peace processes.
Date: July 14, 2009
Creator: Arieff, Alexis; Margesson, Rhoda & Browne, Marjorie Ann
Object Type: Report
System: The UNT Digital Library
Temperature and Water Depth Monitoring Within Chum Salmon Spawning Habitat Below Bonneville Dam : Annual Report October 2007-September 2008 (open access)

Temperature and Water Depth Monitoring Within Chum Salmon Spawning Habitat Below Bonneville Dam : Annual Report October 2007-September 2008

The overall goal of the project described in this report is to provide a sound scientific basis for operation of the Federal Columbia River Power System (FCRPS) in ways that will effectively protect and enhance chum salmon populations - a species listed in March 1999 as threatened under the Endangered Species Act of 1973 (ESA). The study objective during fiscal year 2008 was to provide real-time data on Ives Island area water temperature and water surface elevations from the onset of chum salmon spawning through the end of chum salmon emergence. Sampling locations included areas where riverbed temperatures were elevated, potentially influencing alevin development and emergence timing. In these locations, hydrosystem operation caused large, frequent changes in river discharge that affected salmon habitat by dewatering redds and altering egg pocket temperatures. The 2008 objective was accomplished using temperature and water-level sensors deployed inside piezometers. Sensors were integrated with a radio telemetry system such that real-time data could be downloaded remotely and posted hourly on the Internet. During our overall monitoring period (October 2007 through June 2008), mean temperature in chum spawning areas was nearly 2 C warmer within the riverbed than in the overlying river. During chum salmon spawning (mid-November …
Date: July 14, 2009
Creator: Arntzen, E.V.
Object Type: Report
System: The UNT Digital Library
Temperature and Water Depth Monitoring Within Chum Salmon Spawning Habitat Below Bonneville Dam -- Annual Report -- October 2007-September 2008 (open access)

Temperature and Water Depth Monitoring Within Chum Salmon Spawning Habitat Below Bonneville Dam -- Annual Report -- October 2007-September 2008

The overall goal of the project described in this report is to provide a sound scientific basis for operation of the Federal Columbia River Power System (FCRPS) in ways that will effectively protect and enhance chum salmon populations----a species listed in March 1999 as threatened under the Endangered Species Act of 1973 (ESA). The study objective during fiscal year 2008 was to provide real-time data on Ives Island area water temperature and water surface elevations from the onset of chum salmon spawning through the end of chum salmon emergence. Sampling locations included areas where riverbed temperatures were elevated, potentially influencing alevin development and emergence timing. In these locations, hydrosystem operation caused large, frequent changes in river discharge that affected salmon habitat by dewatering redds and altering egg pocket temperatures. The 2008 objective was accomplished using temperature and water-level sensors deployed inside piezo¬meters. Sensors were integrated with a radio telemetry system such that real-time data could be downloaded remotely and posted hourly on the Internet.
Date: July 14, 2009
Creator: Arntzen, Evan V.
Object Type: Report
System: The UNT Digital Library
Improved Measurement of B^ \to\rho^ \rho^0 and Determination of the Quark-Mixing Phase Angle~\alpha (open access)

Improved Measurement of B^ \to\rho^ \rho^0 and Determination of the Quark-Mixing Phase Angle~\alpha

The authors present improved measurements of the branching fraction {Beta}, the longitudinal polarization fraction f{sub L}, and the direct CP asymmetry A{sub CP} in the B meson decay channel B{sup +} {yields} {rho}{sup +}{rho}{sup 0}. The data sample was collected with the BABAR detector at SLAC. The results are {Beta}(B{sup +} {yields} {rho}{sup +}{rho}{sup 0}) = (23.7 {+-} 1.4 {+-} 1.4) x 10{sup -6}, f{sub L} = 0.950 {+-} 0.015 {+-} 0.006, and A{sub CP} = -0.054 {+-} 0.055 {+-} 0.010, where the uncertainties are statistical and systematic, respectively. Based on these results, they perform an isospin analysis and determine the CKM weak phase angle {alpha} to be (92.4{sub -6.5}{sup +6.0}){sup 0}.
Date: July 14, 2009
Creator: Aubert, B.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prencipe, E.; Prudent, X. et al.
Object Type: Article
System: The UNT Digital Library
[Letter from Ronald E. Ault to Anthony J. Principi - July 14, 2005] (open access)

[Letter from Ronald E. Ault to Anthony J. Principi - July 14, 2005]

Letter from Ronald E. Ault of the American Federation of Labor and Congress of Industrial Organizations, Metal Trades Department, to Anthony J. Principi regarding Comments by Ault about the BRAC and DoD recommendations.
Date: July 14, 2005
Creator: Ault, Ronald E.
Object Type: Letter
System: The UNT Digital Library
MONOSODIUM TITANATE MULTI-STRIKE TESTING (open access)

MONOSODIUM TITANATE MULTI-STRIKE TESTING

Research over the past decade has studied the adsorption of plutonium and uranium onto monosodium titanate (MST) in alkaline solutions. Tests showed that MST would remove the targeted radionuclides from simulated alkaline waste. Testing also indicated that Pu removal kinetics and Np capacity of the MST material impacts the size of equipment and waste blending plans for the Salt Waste Processing Facility (SWPF). Additionally, calculations suggested the baseline MST process may not achieve the desired decontamination in wastes containing elevated concentrations of Pu and Np. In this task, the authors investigated the performance of non-baseline process parameters and their effectiveness for treating waste feed in the Salt Waste Processing Facility. The work addresses a DOE request in support of technical needs expressed, in part, by the Engineering, Procurement, and Construction Contractors for the Salt Waste Processing Facility. The work investigated the effect of increased MST addition (up to 1.2 g/L) and the benefit of extra filtration steps with multiple additions of MST to salt waste containing actinides and strontium. Both simulant and actual waste testing occurred. Actual waste tests used a Tank 39H composite waste solution. In addition, testing to determine desorption of actinides from residual MST occurred. The release …
Date: July 14, 2004
Creator: BARNES, MARKJ
Object Type: Report
System: The UNT Digital Library
Production Improvement From Increased Permeability Using Engineered Biochemical Secondary Recovery Methodology in Marginal Wells of the East Texas Field (open access)

Production Improvement From Increased Permeability Using Engineered Biochemical Secondary Recovery Methodology in Marginal Wells of the East Texas Field

A regenerating biochemical mixture and organic surfactant has been applied to wells in the East Texas Field with the goal of restoring permeability, reversing formation damage, mobilizing hydrocarbons, and ultimately increasing production. Initial work in task 1 was designed to open the perforations and remove blockages of scale, asphaltene, and other corrosion debris. This was accomplished on three wells that produce from the Woodbine, and was necessary to prepare the wells for more substantial future treatments. Secondly, in task 2, two wells were treated with much larger quantities of the biochemical mixture, e.g. 25 gallons, followed by approximately 140 barrels of a 2% KCl solution that carried the active biochemical solution into the near wellbore area and into the producing reservoir. After a 7 to 10 day acclamation and reaction period, the wells were put back into production. The biochemical solution successfully broke down the scale, paraffin and other binders blocking permeability and released significant debris which was immediately produced into the flowlines and separators. Oil production was clearly improved and the removed debris was a maintenance issue until the surface equipment could be modified. Next steps include larger treatments and tracer tests to better understand the fluid flow dynamics.
Date: July 14, 2004
Creator: Bassett, R. L. & Botto, William S.
Object Type: Report
System: The UNT Digital Library
Animal Identification: Overview and Issues (open access)

Animal Identification: Overview and Issues

Livestock industry groups, animal health officials, and the U.S. Department of Agriculture have been working to establish a nationwide identification system capable of quickly tracking animals from birth to slaughter, to deal with animal diseases and/or to satisfy foreign market specifications. This report details information on what animal identification is and why is it used, animal health, commercial production and marketing, food safety, development of a national plan, and selected issues.
Date: July 14, 2008
Creator: Becker, Geoffrey S.
Object Type: Report
System: The UNT Digital Library
The Cost of Iraq, Afghanistan, and Other Global War on Terror Operations Since 9/11 (open access)

The Cost of Iraq, Afghanistan, and Other Global War on Terror Operations Since 9/11

This report details the total cost of counterterrorism operations in the Global War on Terror (GWOT) since the September 2001 terrorist attacks on the United States. This report also includes descriptions of relevant budgetary legislation.
Date: July 14, 2008
Creator: Belasco
Object Type: Report
System: The UNT Digital Library
Visual Data Exploration and Analysis - Report on the Visualization Breakout Session of the SCaLeS Workshop (open access)

Visual Data Exploration and Analysis - Report on the Visualization Breakout Session of the SCaLeS Workshop

Scientific visualization is the transformation of abstract information into images, and it plays an integral role in the scientific process by facilitating insight into observed or simulated phenomena. Visualization as a discipline spans many research areas from computer science, cognitive psychology and even art. Yet the most successful visualization applications are created when close synergistic interactions with domain scientists are part of the algorithmic design and implementation process, leading to visual representations with clear scientific meaning. Visualization is used to explore, to debug, to gain understanding, and as an analysis tool. Visualization is literally everywhere--images are present in this report, on television, on the web, in books and magazines--the common theme is the ability to present information visually that is rapidly assimilated by human observers, and transformed into understanding or insight. As an indispensable part a modern science laboratory, visualization is akin to the biologist's microscope or the electrical engineer's oscilloscope. Whereas the microscope is limited to small specimens or use of optics to focus light, the power of scientific visualization is virtually limitless: visualization provides the means to examine data that can be at galactic or atomic scales, or at any size in between. Unlike the traditional scientific tools …
Date: July 14, 2003
Creator: Bethel, E. Wes; Frank, Randy; Fulcomer, Sam; Hansen, Chuck; Joy, Ken; Kohl, J et al.
Object Type: Report
System: The UNT Digital Library
LLNL's Regional Model Calibration and Body-Wave Discrimination Research in the Former Soviet Union using Peaceful Nuclear Explosions (PNEs) (open access)

LLNL's Regional Model Calibration and Body-Wave Discrimination Research in the Former Soviet Union using Peaceful Nuclear Explosions (PNEs)

Long-range seismic profiles from Peaceful Nuclear Explosions (PNE) in the Former Soviet Union (FSU) provide a unique data set to investigate several important issues in regional Comprehensive Nuclear-Test-Ban Treaty (CTBT) monitoring. The recording station spacing ({approx}15 km) allows for extremely dense sampling of the propagation from the source to {approx} 3300 km. This allows us to analyze the waveforms at local, near- and far-regional and teleseismic distances. These data are used to: (1) study the evolution of regional phases and phase amplitude ratios along the profile; (2) infer one-dimensional velocity structure along the profile; and (3) evaluate the spatial correlation of regional and teleseismic travel times and regional phase amplitude ratios. We analyzed waveform data from four PNE's (m{sub b} = 5.1-5.6) recorded along profile KRATON, which is an east-west trending profile located in northern Sibertil. Short-period regional discriminants, such as P/S amplitude ratios, will be essential for seismic monitoring of the Comprehensive Nuclear-Test-Ban Treaty (CTBT) at small magnitudes (m{sub b} < 4.0). However, P/S amplitude ratios in the short-period band, 0.5-5.0 Hz, show some scatter. This scatter is primarily due to propagation and site effects, which arise from variability in the elastic and anelastic structure of the crustal waveguide. …
Date: July 14, 2000
Creator: Bhattacharyya, J.; Rodgers, A.; Swenson, J.; Schultz, C.; Walter, W.; Mooney, W. et al.
Object Type: Article
System: The UNT Digital Library

YMP Site Activity Update

None
Date: July 14, 2005
Creator: Bishop, L.
Object Type: Presentation
System: The UNT Digital Library
Tactical Aircraft Modernization: Issues for Congress (open access)

Tactical Aircraft Modernization: Issues for Congress

This report examines the Department of Defense's (DOD) four largest tactical aircraft modernization programs. The background section provides a brief description of each program, and a discussion of how tactical aircraft fit into military air operations: the missions they typically perform and how they contrast to longer-range combat aircraft. The analysis section examines a number of policy issues, including affordability, capability required, force structure, service roles and missions, industrial base, and transformation. The paper concludes with a synopsis of recent congressional action on these programs.
Date: July 14, 2006
Creator: Bolkcom, Christopher
Object Type: Report
System: The UNT Digital Library
Tactical Aircraft Modernization: Issues for Congress (open access)

Tactical Aircraft Modernization: Issues for Congress

None
Date: July 14, 2006
Creator: Bolkcom, Christopher
Object Type: Report
System: The UNT Digital Library
Tactical Aircraft Modernization: Issues for Congress (open access)

Tactical Aircraft Modernization: Issues for Congress

None
Date: July 14, 2006
Creator: Bolkcom, Christopher
Object Type: Report
System: The UNT Digital Library
Direct Measurement of the Combined Effects of Lichen, Rainfall, and Temperature On silicate Weathering (open access)

Direct Measurement of the Combined Effects of Lichen, Rainfall, and Temperature On silicate Weathering

A key uncertainty in models of the global carbonate-silicate cycle and long-term climate is the way that silicates weather under different climatologic conditions, and in the presence or absence of organic activity. Digital imaging of basalts in Hawaii resolves the coupling between temperature, rainfall, and weathering in the presence and absence of lichens. Activation energies for abiotic dissolution of plagioclase (23.1{+-} 2.5 kcal/mol) and olivine (21.3 {+-} 2.7 kcal/mol) are similar to those measured in the laboratory, and are roughly double those measured from samples taken underneath lichen. Abiotic weathering rates appear to be proportional to rainfall. Dissolution of plagioclase and olivine underneath lichen is far more sensitive to rainfall.
Date: July 14, 2000
Creator: Brady, Patrick V.; Dorn, Ronald I.; Brazel, Anthony J.; Clark, James; Moore, Richard B. & Glidewell, Tiffany
Object Type: Article
System: The UNT Digital Library
X-Ray Digital Radiography and Computed Tomography of High Energy Density Physics (HEDP) Material, Subassemblies and Targets (open access)

X-Ray Digital Radiography and Computed Tomography of High Energy Density Physics (HEDP) Material, Subassemblies and Targets

None
Date: July 14, 2006
Creator: Brown, W. D. & Martz, H. E., Jr.
Object Type: Article
System: The UNT Digital Library
Fishery, Aquaculture, and Marine Mammal Legislation in the 109th Congress (open access)

Fishery, Aquaculture, and Marine Mammal Legislation in the 109th Congress

Fish and marine mammals are important resources in open ocean and nearshore coastal areas; many federal laws and regulations guide their management. This report discusses a variety of laws and legislation pertaining to this issue.
Date: July 14, 2006
Creator: Buck, Eugene H.
Object Type: Report
System: The UNT Digital Library
Totally Integrated Munitions Enterprise ''Affordable Munitions Production for the 21st Century'' (open access)

Totally Integrated Munitions Enterprise ''Affordable Munitions Production for the 21st Century''

The U.S. Army faces several munitions manufacturing issues: downsizing of the organic production base, timely fielding of affordable smart munitions, and munitions replenishment during national emergencies. TIME is addressing these complex issues via the development and demonstration of an integrated enterprise. The enterprise will include the tools, network, and open modular architecture controller to enable accelerated acquisition, shortened concept to volume production, lower life cycle costs, capture of critical manufacturing processes, and communication of process parameters between remote sites to rapidly spin-off production for replenishment by commercial sources. TIME addresses the enterprise as a system, integrating design, engineering, manufacturing, administration, and logistics.
Date: July 14, 2000
Creator: Burleson, R. R.; Poggio, M. E.; Rosenberg, S. J. & McWilliams, T.
Object Type: Report
System: The UNT Digital Library