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1,067 Matching Results
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1.1 Simulations of a Free-Electron Laser Oscillator at Jefferson Lab Lasing in the Vacuum Ultraviolet
This report is a descriptive summary of the simulation of a free- electron laser Oscillator at Jefferson Lab Lasing in the Vacuum Ultraviolet
Date:
April 1, 2013
Creator:
Shinn, Michelle D. & Benson, Stephen V.
Object Type:
Article
System:
The UNT Digital Library
E-75 (4-1-13)
Photograph of Rosedale FD E-75. This rig was originally owned by the Purcell FD.
Date:
April 1, 2013
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
N*(1535) electroproduction at high Q2
A covariant spectator quark model is applied to study the {gamma}N {yields} N*(1535) reaction in the large Q{sup 2} region. Starting from the relation between the nucleon and N*(1535) systems, the N*(1535) valence quark wave function is determined without the addition of any parameters. The model is then used to calculate the {gamma}N {yields} N*(1535) transition form factors. A very interesting, useful relation between the A{sub 1/2} and S{sub 1/2} helicity amplitudes for Q{sup 2} > GeV{sup 2}, is also derived.
Date:
April 1, 2012
Creator:
G. Ramalho, M.T. Pena, K. Tsushima
Object Type:
Article
System:
The UNT Digital Library
2009 Lobbying Disclosure: Observations on Lobbyists' Compliance with Disclosure Requirements
A letter report issued by the Government Accountability Office with an abstract that begins "The Honest Leadership and Open Government Act of 2007 amended the Lobbying Disclosure Act of 1995 (LDA). This is GAO's third report in response to the LDA's requirement for GAO to annually (1) determine the extent to which lobbyists can demonstrate compliance with the LDA by providing support for information on their registrations and reports, (2) identify challenges and potential improvements to compliance for registered lobbyists, and (3) describe the efforts the U.S. Attorney's Office for the District of Columbia (the Office) has made to improve its enforcement of the LDA. GAO reviewed a random sample of 134 lobbying disclosure reports filed from the fourth quarter of calendar year 2008 through the third quarter of calendar year 2009. GAO also selected two random samples of federal political campaign contributions reports from year-end 2008 through midyear 2009. GAO sampled 100 reports listing contributions and 100 reports listing no contributions. This methodology allowed GAO to generalize to the population of 53,756 disclosure reports, 10,928 contributions reports, and 22,572 reports with no contributions. GAO also met with officials from the Office regarding efforts to focus resources on lobbyists who …
Date:
April 1, 2010
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
2010 Cost of Wind Energy Review
This document provides a detailed description of NREL's levelized cost of wind energy equation, assumptions and results in 2010, including historical cost trends and future projections for land-based and offshore utility-scale wind.
Date:
April 1, 2012
Creator:
Tegen, S.; Hand, M.; Maples, B.; Lantz, E.; Schwabe, P. & Smith, A.
Object Type:
Report
System:
The UNT Digital Library
2010 Lobbying Disclosure: Observations on Lobbyists' Compliance with Disclosure Requirements
A letter report issued by the Government Accountability Office with an abstract that begins "The Honest Leadership and Open Government Act of 2007 requires that GAO annually (1) determine the extent to which lobbyists can demonstrate compliance with disclosure requirements, (2) identify any challenges that lobbyists report to compliance, and (3) describe the resources and authorities available to the U.S. Attorney's Office for the District of Columbia (the Office), and the efforts the Office has made to improve its enforcement of the Lobbying Disclosure Act of 1995 as amended (LDA). This is GAO's fourth report under the mandate. GAO reviewed a stratified random sample of 100 lobbying disclosure reports filed from the fourth quarter of calendar year 2009 through the third quarter of calendar year 2010. GAO also selected two random samples totaling 160 reports of federal political campaign contributions from year-end 2009 and midyear 2010. This methodology allowed GAO to generalize to the population of 55,282 disclosure reports with $5,000 or more in lobbying activity. GAO also met with officials from the Office regarding efforts to focus resources on lobbyists who fail to comply. GAO provided a draft of this report to the Attorney General for review and comment. …
Date:
April 1, 2011
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
2012 Groundwater Monitoring Report Central Nevada Test Area, Subsurface Corrective Action Unit 443
The Central Nevada Test Area was the site of a 0.2- to 1-megaton underground nuclear test in 1968. The surface of the site has been closed, but the subsurface is still in the corrective action process. The corrective action alternative selected for the site was monitoring with institutional controls. Annual sampling and hydraulic head monitoring are conducted as part of the subsurface corrective action strategy. The site is currently in the fourth year of the 5-year proof-of-concept period that is intended to validate the compliance boundary. Analytical results from the 2012 monitoring are consistent with those of previous years. Tritium remains at levels below the laboratory minimum detectable concentration in all wells in the monitoring network. Samples collected from reentry well UC-1-P-2SR, which is not in the monitoring network but was sampled as part of supplemental activities conducted during the 2012 monitoring, indicate concentrations of tritium that are consistent with previous sampling results. This well was drilled into the chimney shortly after the detonation, and water levels continue to rise, demonstrating the very low permeability of the volcanic rocks. Water level data from new wells MV-4 and MV-5 and recompleted well HTH-1RC indicate that hydraulic heads are still recovering from …
Date:
April 1, 2013
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
2012 Lobbying Disclosure: Observations on Lobbyists' Compliance with Disclosure Requirements
A letter report issued by the Government Accountability Office with an abstract that begins "Most lobbyists were able to provide documentation to demonstrate compliance with the disclosure requirements of the Lobbying Disclosure Act of 1995 (LDA), as amended by the Honest Leadership and Open Government Act of 2007 (HLOGA). For lobbying disclosure reports (LD-2), GAO estimates that"
Date:
April 1, 2013
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
2012 Update of the Combination of CDF and D0 Results for the Mass of the W Boson
We summarize and combine the results on the direct measurements of the mass of the W boson in data collected by the Tevatron experiments CDF and D0 at Fermilab. Earlier results from CDF Run-0 (1988-1989), D0 and CDF Run-I (1992-1995) and D0 results from 1 fb{sup -1} (2002-2006) of Run-II data are now combined with two new, high statistics Run-II measurements: a CDF measurement in both electron and muon channels using 2.2 fb{sup -1} of integrated luminosity collected between 2002 and 2007, and a D0 measurement in the electron channel using 4.3 fb{sup -1} collected between 2006 and 2009. As in previous combinations, the results are corrected for inconsistencies in parton distribution functions and assumptions about electroweak parameters used in the different analyses. The resulting Tevatron average for the mass of the W boson is M{sub W} = 80,387 {+-} 16 MeV and a new world average including data from LEP II is M{sub W} = 80,385 {+-} 15 MeV.
Date:
April 1, 2012
Creator:
Tevatron Electroweak Working Group,
Object Type:
Report
System:
The UNT Digital Library
7X performance results - final report : ASCI Red vs Red Storm.
The goal of the 7X performance testing was to assure Sandia National Laboratories, Cray Inc., and the Department of Energy that Red Storm would achieve its performance requirements which were defined as a comparison between ASCI Red and Red Storm. Our approach was to identify one or more problems for each application in the 7X suite, run those problems at multiple processor sizes in the capability computing range, and compare the results between ASCI Red and Red Storm. The first part of this report describes the two computer systems, the applications in the 7X suite, the test problems, and the results of the performance tests on ASCI Red and Red Storm. During the course of the testing on Red Storm, we had the opportunity to run the test problems in both single-core mode and dual-core mode and the second part of this report describes those results. Finally, we reflect on lessons learned in undertaking a major head-to-head benchmark comparison.
Date:
April 1, 2011
Creator:
Dinge, Dennis C. (Cray Inc., Albuquerque, NM); Davis, Michael E. (Cray Inc., Albuquerque, NM); Haskell, Karen H.; Ballance, Robert A.; Gardiner, Thomas Anthony; Stevenson, Joel O. et al.
Object Type:
Report
System:
The UNT Digital Library
82nd Texas Legislature, Regular Session, House Concurrent Resolution 47
Concurrent resolution introduced by the Texas House of Representatives and Senate in memory of U.S. Army Private First Class Ira Benjamin Laningham IV of Zapata.
Date:
April 1, 2011
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
Absolute beam flux measurement at NDCX-I using gold-melting calorimetry technique
We report on an alternative way to measure the absolute beam flux at the NDCX-I, LBNL linear accelerator. Up to date, the beam flux is determined from the analysis of the beam-induced optical emission from a ceramic scintilator (Al-Si). The new approach is based on calorimetric technique, where energy flux is deduced from the melting dynamics of a gold foil. We estimate an average 260 kW/cm2 beam flux over 5 {micro}s, which is consistent with values provided by the other methods. Described technique can be applied to various ion species and energies.
Date:
April 1, 2011
Creator:
Ni, P. A.; Bieniosek, F. M.; Lidia, S. M. & Welch, J.
Object Type:
Article
System:
The UNT Digital Library
Absolute calibration method for fast-streaked, fiber optic light collection, spectroscopy systems.
This report outlines a convenient method to calibrate fast (<1ns resolution) streaked, fiber optic light collection, spectroscopy systems. Such a system is used to collect spectral data on plasmas generated in the A-K gap of electron beam diodes fielded on the RITS-6 accelerator (8-12MV, 140-200kA). On RITS, light is collected through a small diameter (200 micron) optical fiber and recorded on a fast streak camera at the output of 1 meter Czerny-Turner monochromator (F/7 optics). To calibrate such a system, it is necessary to efficiently couple light from a spectral lamp into a 200 micron diameter fiber, split it into its spectral components, with 10 Angstroms or less resolution, and record it on a streak camera with 1ns or less temporal resolution.
Date:
April 1, 2010
Creator:
Johnston, Mark D.; Frogget, Brent; Oliver, Bryan Velten; Maron, Yitzhak; Droemer, Darryl W. & Crain, Marlon D.
Object Type:
Report
System:
The UNT Digital Library
Absorber Alignment Measurement Tool for Solar Parabolic Trough Collectors: Preprint
As we pursue efforts to lower the capital and installation costs of parabolic trough solar collectors, it is essential to maintain high optical performance. While there are many optical tools available to measure the reflector slope errors of parabolic trough solar collectors, there are few tools to measure the absorber alignment. A new method is presented here to measure the absorber alignment in two dimensions to within 0.5 cm. The absorber alignment is measured using a digital camera and four photogrammetric targets. Physical contact with the receiver absorber or glass is not necessary. The alignment of the absorber is measured along its full length so that sagging of the absorber can be quantified with this technique. The resulting absorber alignment measurement provides critical information required to accurately determine the intercept factor of a collector.
Date:
April 1, 2012
Creator:
Stynes, J. K. & Ihas, B.
Object Type:
Article
System:
The UNT Digital Library
Accident source terms for pressurized water reactors with high-burnup cores calculated using MELCOR 1.8.5.
In this study, risk-significant pressurized-water reactor severe accident sequences are examined using MELCOR 1.8.5 to explore the range of fission product releases to the reactor containment building. Advances in the understanding of fission product release and transport behavior and severe accident progression are used to render best estimate analyses of selected accident sequences. Particular emphasis is placed on estimating the effects of high fuel burnup in contrast with low burnup on fission product releases to the containment. Supporting this emphasis, recent data available on fission product release from high-burnup (HBU) fuel from the French VERCOR project are used in this study. The results of these analyses are treated as samples from a population of accident sequences in order to employ approximate order statistics characterization of the results. These trends and tendencies are then compared to the NUREG-1465 alternative source term prescription used today for regulatory applications. In general, greater differences are observed between the state-of-the-art calculations for either HBU or low-burnup (LBU) fuel and the NUREG-1465 containment release fractions than exist between HBU and LBU release fractions. Current analyses suggest that retention of fission products within the vessel and the reactor coolant system (RCS) are greater than contemplated in the …
Date:
April 1, 2010
Creator:
Gauntt, Randall O.; Powers, Dana Auburn; Ashbaugh, Scott G.; Leonard, Mark Thomas & Longmire, Pamela
Object Type:
Report
System:
The UNT Digital Library
An Accumulator/Pre-Booster for the Medium-Energy Electron Ion Collider at Jlab
Future nuclear physics facilities such as the proposed electron ion collider (MEIC) will need to achieve record high luminosities in order to maximize discovery potential. Among the necessary ingredients is the ability to generate, accumulate , accelerate, and store high current ion beams from protons to lead ions. One of the main components of this ion accelerator complex for MEIC chain is the accumulator that also doubles as a pre-booster, which takes 200 MeV protons from a superconducting linear accelerator, accumulates on the order of 1A beam, and boosts its energy to 3GeV, before extraction to the next accelerator in the chain, the large booster. This paper describes its design concepts, and summarizes some preliminary results, including linear optics, space charge dynamics, and spin polarization resonance analysis.
Date:
April 1, 2011
Creator:
Erdelyi, B.; Manikonda, S. L.; Ostroumov, P. N.; Abeyratne, S.; Derbenev, Y. S.; Krafft, G. A. et al.
Object Type:
Article
System:
The UNT Digital Library
Acoustic Imaging Evaluation of Juvenile Salmonid Behavior in the Immediate Forebay of the Water Temperature Control Tower at Cougar Dam, 2010
This report presents the results of an evaluation of juvenile Chinook salmon (Oncorhynchus tshawytscha) behavior at Cougar Dam on the south fork of the McKenzie River in Oregon in 2010. The study was conducted by the Pacific Northwest National Laboratory for the U.S. Army Corps of Engineers (USACE). The overall goal of the study was to characterize juvenile salmonid behavior and movement patterns in the immediate forebay of the Water Temperature Control (WTC) tower of the dam for USACE and fisheries resource managers use in making decisions about bioengineering designs for long-term structures and/or operations to facilitate safe downstream passage for juvenile salmonids. We collected acoustic imaging (Dual-Frequency Identification Sonar; DIDSON) data from March 1, 2010, through January 31, 2011. Juvenile salmonids (hereafter, called 'fish') were present in the immediate forebay of the WTC tower throughout the study. Fish abundance index was low in early spring (<200 fish per sample-day), increased in late April, and peaked on May 19 (6,039 fish). A second peak was observed on June 6 (2904 fish). Fish abundance index decreased in early June and remained low in the summer months (<100 fish per sample-day). During the fall and winter, fish numbers varied with a peak …
Date:
April 1, 2012
Creator:
Khan, Fenton; Johnson, Gary E.; Royer, Ida M.; Phillips, Nathan RJ; Hughes, James S.; Fischer, Eric S. et al.
Object Type:
Report
System:
The UNT Digital Library
Acoustic Noise Test Report for the SWIFT Wind Turbine in Boulder, CO
This report summarizes the results of an acoustic noise test that the National Renewable Energy Laboratory (NREL) conducted on the SWIFT wind turbine. This test was conducted in accordance with the International Electrotechnical Commission's (IEC) standard, Wind Turbine Generator Systems Part 11: Acoustic Noise Measurement Techniques, IEC 61400-11 Ed.2.1, 2006-11. However, because the SWIFT is a small turbine, as defined by IEC, NREL used 10-second averages instead of 60-second averages and utilized binning by wind speed instead of regression analysis.
Date:
April 1, 2013
Creator:
Roadman, J. & Huskey, A.
Object Type:
Report
System:
The UNT Digital Library
Active Power Control from Wind Power
In order to keep the electricity grid stable and the lights on, the power system relies on certain responses from its generating fleet. This presentation evaluates the potential for wind turbines and wind power plants to provide these services and assist the grid during critical times.
Date:
April 1, 2011
Creator:
Ela, E. & Brooks, D.
Object Type:
Presentation
System:
The UNT Digital Library
Addendum to the East Tennessee Technology Park Site-Wide Residual Contamination Remedial Investigation Work Plan Oak Ridge, Tennessee
The East Tennessee Technology Park Site-Wide Residual Contamination Remedial Investigation Work Plan (DOE 2004) describes the planned fieldwork to support the remedial investigation (RI) for residual contamination at the East Tennessee Technology Park (ETTP) not addressed in previous Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA) decisions. This Addendum describes activities that will be conducted to gather additional information in Zone 1 of the ETTP for groundwater, surface water, and sediments. This Addendum has been developed from agreements reached in meetings held on June 23, 2010, August 25, 2010, October 13, 2010, November 13, 2010, December 1, 2010, and January 13, 2011, with representatives of the U. S. Department of Energy (DOE), U. S. Environmental Protection Agency (EPA), and Tennessee Department of Environment and Conservation (TDEC). Based on historical to recent groundwater data for ETTP and the previously completed Sitewide Remedial Investigation for the ETTP (DOE 2007a), the following six areas of concern have been identified that exhibit groundwater contamination downgradient of these areas above state of Tennessee and EPA drinking water maximum contaminant levels (MCLs): (1) K-720 Fly Ash Pile, (2) K-770 Scrap Yard, (3) Duct Island, (4) K-1085 Firehouse Burn/J.A. Jones Maintenance Area, (5) Contractor's Spoil …
Date:
April 1, 2011
Creator:
SAIC
Object Type:
Report
System:
The UNT Digital Library
Advanced discrete-continuum methods for dynamic loading of tunnels by ground shocks
None
Date:
April 1, 2013
Creator:
Vorobiev, O
Object Type:
Report
System:
The UNT Digital Library
Advanced Energy Design Guides Slash Energy Use in Schools and Retail Buildings by 50% (Fact Sheet)
Owners, contractors, engineers, and architects can easily achieve significant energy savings by leveraging the complex analyses and expertise captured in these guides.
Date:
April 1, 2012
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Advanced Vehicle Testing Activity Benchmark Testing of the Chevrolet Volt Onboard Charger
This is a report for public consumption, for the AVTA website, detailing the testing and analysis of the benchmark testing conducted on the Chevrolet Volt on-board charger.
Date:
April 1, 2012
Creator:
Carlson, Richard
Object Type:
Report
System:
The UNT Digital Library
Advancements in Ti Alloy Powder Production by Close-Coupled Gas Atomization
As the technology for titanium metal injection molding (Ti-MIM) becomes more readily available, efficient Ti alloy fine powder production methods are required. An update on a novel close-coupled gas atomization system has been given. Unique features of the melting apparatus are shown to have measurable effects on the efficiency and ability to fully melt within the induction skull melting system (ISM). The means to initiate the melt flow were also found to be dependent on melt apparatus. Starting oxygen contents of atomization feedstock are suggested based on oxygen pick up during the atomization and MIM processes and compared to a new ASTM specification. Forming of titanium by metal injection molding (Ti-MIM) has been extensively studied with regards to binders, particle shape, and size distribution and suitable de-binding methods have been discovered. As a result, the visibility of Ti-MIM has steadily increased as reviews of technology, acceptability, and availability have been released. In addition, new ASTM specification ASTM F2885-11 for Ti-MIM for biomedical implants was released in early 2011. As the general acceptance of Ti-MIM as a viable fabrication route increases, demand for economical production of high quality Ti alloy powder for the preparation of Ti-MIM feedstock correspondingly increases. The production …
Date:
April 1, 2011
Creator:
Heidloff, Andy; Rieken, Joel; Anderson, Iver & Byrd, David
Object Type:
Article
System:
The UNT Digital Library