45 Matching Results

Search Results

Results: 1 - 24 next
open access

U.S. Postal Service: Agencies Distribute Fund-raising Stamp Proceeds and Improve Reporting

Description: A letter report issued by the Government Accountability Office with an abstract that begins "As required by Congress, the U.S. Postal Service (Service) has issued three fundraising stamps--also called semipostals--which are sold at a higher price than First-Class stamps, with the difference distributed to designated federal agencies for specific causes. The proceeds from the three stamps are to fund breast cancer research, assistance to families of emergency relief personnel killed or permanent… more
Date: October 30, 2007
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Defense Contracts: Contracting for Military Food Services under the Randolph-Sheppard and Javits-Wagner-O'Day Programs

Description: A letter report issued by the Government Accountability Office with an abstract that begins "Randolph-Sheppard and Javits-Wagner-O'Day (JWOD) are two federal programs that provide employment for persons with disabilities through federal contracts. In 2006, participants in the two programs had contracts with the Department of Defense (DOD) worth $465 million annually to provide dining services at military dining facilities. The 2007 National Defense Authorization Act directed GAO to study the tw… more
Date: October 30, 2007
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Securing, Stabilizing, and Rebuilding Iraq: GAO Audits and Key Oversight Issues

Description: Testimony issued by the Government Accountability Office with an abstract that begins "Since 2003, the Congress has obligated nearly $400 billion for U.S. efforts in Iraq, of which about $40 billion has supported reconstruction and stabilization efforts. Congressional oversight of this substantial investment is crucial as the Administration requests additional military and economic funds for Iraq. This testimony summarizes the results of recent GAO audit work and proposes three areas for which … more
Date: October 30, 2007
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Homeland Security: Federal Efforts Are Helping to Alleviate Some Challenges Encountered by State and Local Information Fusion Centers

Description: A letter report issued by the Government Accountability Office with an abstract that begins "In general, a fusion center is a collaborative effort to detect, prevent, investigate, and respond to criminal and terrorist activity. Recognizing that fusion centers are a mechanism for information sharing, the federal government--including the Department of Homeland Security (DHS), the Department of Justice (DOJ), and the Program Manager for the Information Sharing Environment (PM-ISE), which has prim… more
Date: October 30, 2007
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Maritime Security: The SAFE Port Act: Status and Implementation One Year Later

Description: Testimony issued by the Government Accountability Office with an abstract that begins "Because the safety and economic security of the United States depend in substantial part on the security of its 361 seaports, the United States has a vital national interest in maritime security. The Security and Accountability for Every Port Act (SAFE Port Act), modified existing legislation and created and codified new programs related to maritime security. The Department of Homeland Security (DHS) and its … more
Date: October 30, 2007
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Stabilization and Reconstruction: Actions Needed to Improve Governmentwide Planning and Capabilities for Future Operations

Description: Testimony issued by the Government Accountability Office with an abstract that begins "The United States has become increasingly involved in stabilization and reconstruction operations as evidenced in the Balkans, Haiti, Somalia, Iraq, and Afghanistan. In December 2005, the President issued National Security Presidential Directive 44, establishing governmentwide policy for coordinating, planning, and implementing U.S. stabilization and reconstruction assistance to affected foreign entities. Thi… more
Date: October 30, 2007
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Process Development for Permanganate Addition During Oxidative Leaching of Hanford Tanks Sludges

Description: Previous Bechtel National, Incorporated (BNI)-sponsored studies have targeted optimizing sodium permanganate for the selective oxidation of chromium from washed Hanford tank sludges (Rapko et al. 2004; Rapko et al. 2005). The recommendation from previous work was that contact with sodium permanganate in a minimally caustic solution, i.e., 0.1 to 0.25 M [OH-] initially, provided maximum Cr dissolution while minimizing concomitant Pu dissolution. At the request of BNI, further work on oxidative a… more
Date: October 30, 2007
Creator: Rapko, Brian M.; Lumetta, Gregg J.; Deschane, Jaquetta R.; Peterson, Reid A. & Blanchard, David L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Low-Temperature Aging Kinetics of a 15-Year Old Water-Quenched U-6wt.% Nb Alloy

Description: It is well known that U-6wt.% Nb (U-14at.% Nb) alloy has a microstructure containing martensitic phases supersaturated with Nb that can be obtained by rapid quenching the alloy from {gamma} (bcc)-field solid solution to room temperature. The high cooling rate forces the {gamma}-phase solid solution to transform to variants of the low-temperature {alpha} (orthorhombic) phase in which Nb is forced to retain in the supersaturated solid solution. However, the crystal lattice of supersaturated solut… more
Date: October 30, 2007
Creator: Hsiung, L & Zhou, J
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

SPENT NUCLEAR FUEL STORAGE BASIN WATER CHEMISTRY: ELECTROCHEMICAL EVALUATION OF ALUMINUM CORROSION

Description: The factors affecting the optimal water chemistry of the Savannah River Site spent fuel storage basin must be determines in order to optimize facility efficiency, minimize fuel corrosion, and reduce overall environmental impact from long term spent nuclear fuel storage at the Savannah River Site. The Savannah River National Laboratory is using statistically designed experiments to study the effects of NO{sub 3}{sup -}, SO{sub 4}{sup 2-}, and Cl{sup -} concentrations on alloys commonly used not … more
Date: October 30, 2007
Creator: Hathcock, D
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

ACRF Instrumentation Status: New, Current, and Future - September – October 2007

Description: The purpose of this report is to provide a concise but comprehensive overview of Atmospheric Radiation Measurement (ARM) Climate Research Facility (ACRF) instrumentation status. The report is divided into the following four sections: (1) new instrumentation in the process of being acquired and deployed, (2) existing instrumentation and progress on improvements or upgrades, (3) proposed future instrumentation, and (4) SBIR instrument development.
Date: October 30, 2007
Creator: Voyles, J. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

ACRF Archive User Meeting Summary

Description: On October 30, 2007, the U.S. Department of Energy’s (DOE) Atmospheric Radiation Measurement (ARM) Climate Research Facility (ACRF) sponsored an all-day workshop to assess the status of the ACRF Archive. Focus areas included usability of current functions, plans for revised functions, proposals for new functions, and an overarching discussion of new ideas. Although 13 scientists familiar with ACRF and the ARM Program were invited to the workshop, only 10 scientists were available to attend the … more
Date: October 30, 2007
Creator: Edgerton, S. A.; McCord, R. A. & Kaiser, D. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analysis of Rayleigh-Taylor Instability: Statistics on Rising Bubbles and Falling Spikes

Description: The analysis of coherent structures in Rayleigh-Taylor simulations is a challenging task as the lack of a precise definition of these structures is compounded by the massive size of the datasets. In an earlier work, we used techniques from image analysis to count these coherent structures in two high-resolution simulations, one a large-eddy simulation with 30 terabytes of analysis data, and the other a direct numerical simulation with 80 terabytes of analysis data. Our analysis indicated that t… more
Date: October 30, 2007
Creator: Kamath, C; Gezahegne, A & Miller, P
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Predictive wavefront control for Adaptive Optics with arbitrary control loop delays

Description: We present a modification of the closed-loop state space model for AO control which allows delays that are a non-integer multiple of the system frame rate. We derive the new forms of the Predictive Fourier Control Kalman filters for arbitrary delays and show that they are linear combinations of the whole-frame delay terms. This structure of the controller is independent of the delay. System stability margins and residual error variance both transition gracefully between integer-frame delays.
Date: October 30, 2007
Creator: Poyneer, L A & Veran, J
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Status report on fast reactor recycle and impact on geologic disposal.

Description: The GNEP program envisions continuing the use of light-water reactors (LWRs), with the addition of processing the discharged, or spent, LWR fuel to recover actinide and fission product elements, and then recycling the actinide elements in sodium-cooled fast reactors. Previous work has established the relationship between the processing efficiencies of spent LWR fuel, as represented by spent PWR fuel, and the potential increase in repository utilization for the resulting processing waste. The pu… more
Date: October 30, 2007
Creator: Bauer, T. H.; Morris, E. E. & Wigeland, R. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Foreign Trip Report MATGEN-IV Sep 24- Oct 26, 2007

Description: Gen-IV activities in France, Japan and US focus on the development of new structural materials for Gen-IV nuclear reactors. Oxide dispersion strengthened (ODS) F/M steels have raised considerable interest in nuclear applications. Promising collaborations can be established seeking fundamental knowledge of relevant Gen-IV ODS steel properties (see attached travel report on MATGEN- IV 'Materials for Generation IV Nuclear Reactors'). Major highlights refer to results on future Ferritic/Martensitic… more
Date: October 30, 2007
Creator: de Caro, M S
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

High-resolution 3-D imaging of surface damage sites in fused silica with Optical Coherence Tomography

Description: In this work, we present the first successful demonstration of a non-contact technique to precisely measure the 3D spatial characteristics of laser induced surface damage sites in fused silica for large aperture laser systems by employing Optical Coherence Tomography (OCT). What makes OCT particularly interesting in the characterization of optical materials for large aperture laser systems is that its axial resolution can be maintained with working distances greater than 5 cm, whether viewing t… more
Date: October 30, 2007
Creator: Guss, G; Bass, I; Hackel, R; Mailhiot, C & Demos, S G
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A RANS/DES Numerical Procedure for Axisymmetric Flows with and without Strong Rotation

Description: A RANS/DES numerical procedure with an extended Lax-Wendroff control-volume scheme and turbulence model is described for the accurate simulation of internal/external axisymmetric flow with and without strong rotation. This new procedure is an extension, from Cartesian to cylindrical coordinates, of (1) a second order accurate multi-grid, control-volume integration scheme, and (2) a k-{omega} turbulence model. This paper outlines both the axisymmetric corrections to the mentioned numerical schem… more
Date: October 30, 2007
Creator: Andrade, A J
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
open access

Solvent-mediated repair and patterning of surfaces by AFM

Description: A tip-based approach to shaping surfaces of soluble materials with nanometer-scale control is reported. The proposed method can be used, for example, to eliminate defects and inhomogeneities in surface shape, repair mechanical or laser-induced damage to surfaces, or perform 3D lithography on the length scale of an AFM tip. The phenomenon that enables smoothing and repair of surfaces is based on the transport of material from regions of high- to low-curvature within the solution meniscus formed … more
Date: October 30, 2007
Creator: Elhadj, S.; Chernov, A. & De Yoreo, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A Simple Explanation for the X(3872) Mass Shift Observed for Decay to D^{*0} \bar{D^0}

Description: We propose a simple explanation for the increase of approximately 3 MeV/c2 in the mass value of the X(3872) obtained from D{sup *0} {bar D}{sup 0} decay relative to that obtained from decay to J/{psi}{pi}{sup +}{pi}{sup -} If the total width of the X(3872) is 2-3 MeV, the peak position in the D{sup *0} {bar D}{sup 0} invariant mass distribution is sensitive to the final state orbital angular momentum because of the proximity of the X(3872) to D{sup *0} {bar D}{sup 0} threshold. We show that for… more
Date: October 30, 2007
Creator: Dunwoodie, W. & Ziegler, V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Quantifying the Digital Divide: A Scientific Overview of Network Connectivity and Grid Infrastructure in South Asian Countries

Description: The future of Computing in High Energy Physics (HEP) applications depends on both the Network and Grid infrastructure. South Asian countries such as India and Pakistan are making significant progress by building clusters as well as improving their network infrastructure However to facilitate the use of these resources, they need to manage the issues of network connectivity to be among the leading participants in Computing for HEP experiments. In this paper we classify the connectivity for acade… more
Date: October 30, 2007
Creator: Khan, Shahryar Muhammad; Cottrell, R.Les; Kalim, Umar & Ali, Arshad
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Resolving the Formation of Protogalaxies. III.Feedback from the First Stars

Description: The first stars form in dark matter halos of masses {approx}10{sup 6}M{sub {circle_dot}} as suggested by an increasing number of numerical simulations. Radiation feedback from these stars expels most of the gas from their shallow potential well of their surrounding dark matter halos. We use cosmological adaptive mesh refinement simulations that include self-consistent Population III star formation and feedback to examine the properties of assembling early dwarf galaxies. Accurate radiative tran… more
Date: October 30, 2007
Creator: Wise, John H.; Abel, Tom & /KIPAC, Menlo Park
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
Back to Top of Screen