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Capitol Visitor Center: Update on Status of Project's Schedule and Cost as of September 25, 2007

Description: Testimony issued by the Government Accountability Office with an abstract that begins "Since the July 31, 2007, Capitol Visitor Center (CVC) hearing, the project's construction has progressed, and Architect of the Capitol (AOC) is now anticipating a November 2008, opening date. In addition, AOC and the sequence 2 contractor have signed a contract modification that extends the date for completing the majority of the sequence 2 work from September 15, 2006 to November 15, 2007. However, because d… more
Date: September 25, 2007
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Freight Railroads: Updated Information on Rates and Competition Issues

Description: Testimony issued by the Government Accountability Office with an abstract that begins "The Staggers Rail Act of 1980 largely deregulated the freight railroad industry, giving the railroads freedom to price their services according to market conditions and encouraging greater reliance on competition to set rates. The act recognized the need for railroads to recover costs by setting higher rates for shippers with fewer transportation alternatives. The act also recognized that some shippers might … more
Date: September 25, 2007
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Compact of Free Association: Implementation Activities Have Progressed, but the Marshall Islands Faces Challenges to Achieving Long-Term Compact Goals

Description: Testimony issued by the Government Accountability Office with an abstract that begins "In 2003, the U.S. government extended its economic assistance to the Republic of the Marshall Islands (RMI) through an Amended Compact of Free Association. From 2004 to 2023, the United States will provide an estimated $1.5 billion to the RMI, with annually decreasing grants as well as increasing contributions to a trust fund. The assistance, targeting six sectors, is aimed at assisting the country's efforts … more
Date: September 25, 2007
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

A Cell-Centered Adaptive Projection Method for the IncompressibleNavier-Stokes Equations in Three Dimensions

Description: We present a method for computing incompressible viscousflows in three dimensions using block-structured local refinement in bothspace and time. This method uses a projection formulation based on acell-centered approximate projection, combined with the systematic use ofmultilevel elliptic solvers to compute increments in the solutiongenerated at boundaries between refinement levels due to refinement intime. We use an L_0-stable second-order semi-implicit scheme to evaluatethe viscous terms. Res… more
Date: September 25, 2007
Creator: Martin, D.F.; Colella, P. & Graves, D.T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A Detailed Chemical Kinetic Reaction Mechanism for n-Alkane Hydrocarbons from n-Octane to n-Hexadecane

Description: Detailed chemical kinetic reaction mechanisms have been developed to describe the pyrolysis and oxidation of the n-alkanes, including n-octane (n-C{sub 8}H{sub 18}), n-nonane (n-C{sub 9}H{sub 20}), n-decane (n-C{sub 10}H{sub 22}), n-undecane (n-C{sub 11}H{sub 24}), n-dodecane (n-C{sub 12}H{sub 26}), n-tridecane (n-C{sub 13}H{sub 28}), n-tetradecane (n-C{sub 14}H{sub 30}), n-pentadecane (n-C{sub 15}H{sub 32}), and n-hexadecane (n-C{sub 16}H{sub 34}). These mechanisms include both high temperatur… more
Date: September 25, 2007
Creator: Westbrook, C K; Pitz, W J; Herbinet, O; Silke, E J & Curran, H J
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The energy coupling efficiency of multi-wavelength laser pulses to damage initiating defects in DKDP nonlinear crystals

Description: The bulk damage performance of potassium dihydrogen phosphate crystals under simultaneous exposure to 1064-, 532-, and 355-nm nanosecond-laser pulses is investigated in order to probe the laser-induced defect reactions leading to damage initiation during frequency conversion. The results provide insight into the mechanisms governing the behavior of the damage initiating defects under exposure to high power laser light. In addition, it is suggested that the damage performance can be directly rel… more
Date: September 25, 2007
Creator: DeMange, P; Negres, R A; Rubenchik, A M; Radousky, H B; Feit, M D & Demos, S G
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A simple and realistic model of supersymmetry breaking

Description: We present a simple and realistic model of supersymmetry breaking. In addition to the minimal supersymmetric standard model, we only introduce a hidden sector gauge group SU(5) and three fields X, F and \bar{F}. Supersymmetry is broken at a local minimum of the potential, and its effects are transmitted to the supersymmetric standard model sector through both standard model gauge loops and local operators suppressed by the cutoff scale, which is taken to be the unification scale. The form of th… more
Date: September 25, 2007
Creator: Nomura, Yasunori & Papucci, Michele
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Technology Survey to Support Revision to the Remedial Investigation/Feasibility Study Work Plan for the 200­-SW­-2 Operable Unit at the U.S. Department of Energy’s Hanford Site

Description: A survey of technologies was conducted to provide information for a Data Quality Objectives process being conducted to support revision of the Remedial Investigation/Feasibility Study Work Plan for the 200-SW-2 Operable Unit. The technology survey considered remediation and characterization technologies. This effort was conducted to address, in part, comments on the previous version of the Remedial Investigation/Feasibility Study Work Plan for the 200-SW-2 Operable Unit as documented in 200­SW­… more
Date: September 25, 2007
Creator: Truex, Michael J.; Johnson, Christian D. & Nimmons, Michael J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Technical Challenges and Scientific Payoffs of Muon BeamAccelerators for Particle Physics

Description: Historically, progress in particle physics has largely beendetermined by development of more capable particle accelerators. Thistrend continues today with the recent advent of high-luminosityelectron-positron colliders at KEK and SLAC operating as "B factories,"the imminent commissioning of the Large Hadron Collider at CERN, and theworldwide development effort toward the International Linear Collider.Looking to the future, one of the most promising approaches is thedevelopment of muon-beam acce… more
Date: September 25, 2007
Creator: Zisman, Michael S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

SSTAR: The U.S. Lead-Cooled Fast Reactor (LFR)

Description: It is widely recognized that the developing world is the next area for major energy demand growth, including demand for new and advanced nuclear energy systems. With limited existing industrial and grid infrastructures, there will be an important need for future nuclear energy systems that can provide small or moderate increments of electric power (10-700 MWe) on small or immature grids in developing nations. Most recently, the Global Nuclear Energy Partnership (GNEP) has identified, as one of … more
Date: September 25, 2007
Creator: Smith, C. F.; Halsey, W. G.; Brown, N. W.; Sienicki, J. J.; Moisseytsev, A. & Wade, D. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Magnetic Bion Condensation: A New Mechanism ofConfinement and Mass Gap in Four Dimensions

Description: In recent work, we derived the long distance confining dynamics of certain QCD-like gauge theories formulated on small S{sup 1} x R{sup 3} based on symmetries, an index theorem and abelian duality. Here, we give the microscopic derivation. The solution reveals a new mechanism of confinement in QCD(adj) in the regime where we have control over both perturbative and nonperturbative aspects. In particular, consider SU(2) QCD(adj) theory with 1 {le} n{sub f} {le} 4 Majorana fermions, a theory which… more
Date: September 25, 2007
Creator: Unsal, Mithat
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

External inverse-Compton Emission from Blazar Jets

Description: According to leptonic models for the high-energy emission from blazars, relativistic electrons in the inner jets inverse-Compton scatter photons from a variety of sources. Seed photons are certainly introduced via the synchrotron process from the electrons themselves, but external sources of seed photons may also be present. In this paper, we present detailed derivations of the equations describing external inverse-Compton scattering from two sources of seed photons: direct emission from the ac… more
Date: September 25, 2007
Creator: Carson, Jennifer E. & Chiang, James
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

First use of a HyViSI H4RG for Astronomical Observations

Description: We present the first astronomical results from a 4K2 Hybrid Visible Silicon PIN array detector (HyViSI) read out with the Teledyne Scientific and Imaging SIDECAR ASIC. These results include observations of astronomical standards and photometric measurements using the 2.1m KPNO telescope. We also report results from a test program in the Rochester Imaging Detector Laboratory (RIDL), including: read noise, dark current, linearity, gain, well depth, quantum efficiency, and substrate voltage effect… more
Date: September 25, 2007
Creator: Simms, Lance M.; Figer, Donald F.; Hanold, Brandon J.; Kerr, Daniel J.; Gilmore, D.Kirk; Kahn, Steven M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Performance of Actinic EUVL Mask Imaging Using a Zoneplate Microscope

Description: The SEMATECH Berkeley Actinic Inspection Tool (AIT) is a dual-mode, scanning and imaging extreme-ultraviolet (EUV) microscope designed for pre-commercial EUV mask research. Dramatic improvements in image quality have been made by the replacement of several critical optical elements, and the introduction of scanning illumination to improve uniformity and contrast. We report high quality actinic EUV mask imaging with resolutions as low as 100-nm half-pitch, (20-nm, 5x wafer equivalent size), and … more
Date: September 25, 2007
Creator: Goldberg, K.; Naulleau, P.; Barty, A.; Rekawa, S.; Kemp, C.; Gunion, R. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Proceedings of the 29th Monitoring Research Review: Ground-Based Nuclear Explosion Monitoring Technologies

Description: These proceedings contain papers prepared for the 29th Monitoring Research Review: Ground-Based Nuclear Explosion Monitoring Technologies, held 25-27 September, 2007 in Denver, Colorado. These papers represent the combined research related to ground-based nuclear explosion monitoring funded by the National Nuclear Security Administration (NNSA), Air Force Technical Applications Center (AFTAC), Air Force Research Laboratory (AFRL), US Army Space and Missile Defense Command, Comprehensive Nuclear… more
Date: September 25, 2007
Creator: Wetovsky, Marvin A.; Benson, Jody & Patterson, Eileen F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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