32 Matching Results

Search Results

Results: 1 - 24 next
open access

Afghanistan: USAID Oversight of Assistance Funds and Programs

Description: Testimony issued by the Government Accountability Office with an abstract that begins "The U.S. Agency for International Development (USAID) has experienced systemic challenges that have hindered its ability to manage and oversee contracts and assistance instruments in Afghanistan. Key challenges include gaps in planning for the use of contractors and assistance recipients and having visibility into their numbers. For example, GAO reported in April 2010 that, absent strategic planning for its u… more
Date: June 6, 2012
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

BALLISTICS TESTING OF THE 9977 SHIPPING PACKAGE FOR STORAGE APPLICATIONS

Description: Radioactive materials are stored in a variety of locations throughout the DOE complex. At the Savannah River Site (SRS), materials are stored within dedicated facilities. Each of those facilities has a documented safety analysis (DSA) that describes accidents that the facility and the materials within it may encounter. Facilities at the SRS are planning on utilizing the certified Model 9977 Shipping Package as a long term storage package and one of these facilities required ballistics testing. … more
Date: June 6, 2012
Creator: Loftin, B.; Abramczyk, G. & Koenig, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Coherence Properties of Individual Femtosecond Pulses of an X-ray Free-Electron Laser

Description: Measurements of the spatial and temporal coherence of single, femtosecond x-ray pulses generated by the first hard x-ray free-electron laser, the Linac Coherent Light Source, are presented. Single-shot measurements were performed at 780 eV x-ray photon energy using apertures containing double pinholes in 'diffract-and-destroy' mode. We determined a coherence length of 17 {micro}m in the vertical direction, which is approximately the size of the focused Linac Coherent Light Source beam in the sa… more
Date: June 6, 2012
Creator: Vartanyants, I. A.; Singer, A.; Mancuso, A. P.; Yefanov, O. M.; Sakdinawat, A.; Liu, Y. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Commercial Space Launch Act: Preliminary Information on Issues to Consider for Reauthorization

Description: Testimony issued by the Government Accountability Office with an abstract that begins "GAO’s work to date work indicates the United States provides less indemnification for third party losses than China, France, and Russia, according to studies. These countries put no limit on the amount of government indemnification coverage currently available through the Commercial Space Launch Act Amendments of 1988 (CSLA) which is about $2.7 billion per launch. These commitments to pay have never been test… more
Date: June 6, 2012
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Constraining PCP Violating Varying Alpha Theory through Laboratory Experiments

Description: In this report we have studied the implication of a parity and charge-parity (PCP) violating interaction in varying alpha theory. Due to this interaction, the state of photon polarization can change when it passes through a strong background magnetic field. We have calculated the optical rotation and ellipticity of the plane of polarization of an electromagnetic wave and tested our results against different laboratory experiments. Our model contains a PCP violating parameter {beta} and a scale … more
Date: June 6, 2012
Creator: Maity, Debaprasad; /NCTS, Taipei /Taiwan, Natl. Taiwan U.; Chen, Pisin & /NCTS, Taipei /Taiwan, Natl. Taiwan U. /KIPAC, Menlo Park /SLAC
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Cosmological Imprints of a Generalized Chaplygin Gas Model for the Early Universe

Description: We propose a phenomenological model for the early universe where there is a smooth transition between an early quintessence phase and a radiation-dominated era. The matter content is modeled by an appropriately modified Chaplygin gas for the early universe. We constrain the model observationally by mapping the primordial power spectrum of the scalar perturbations to the latest data of WMAP7. We compute as well the spectrum of the primordial gravitational waves as would be measured today. We sho… more
Date: June 6, 2012
Creator: Bouhmadi-Lopez, Mariam; /Lisbon, CENTRA; Chen, Pisin; /Taiwan, Natl. Taiwan U. /KIPAC, Menlo Park /SLAC; Liu, Yen-Wei & /Taiwan, Natl. Taiwan U.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Dark Matter Searches with Cherenkov Telescopes: Nearby Dwarf Galaxies or Local Galaxy Clusters?

Description: In this paper, we compare dwarf galaxies and galaxy clusters in order to elucidate which object class is the best target for gamma-ray DM searches with imaging atmospheric Cherenkov telescopes (IACTs). We have built a mixed dwarfs+clusters sample containing some of the most promising nearby dwarf galaxies (Draco, Ursa Minor, Wilman 1 and Segue 1) and local galaxy clusters (Perseus, Coma, Ophiuchus, Virgo, Fornax, NGC 5813 and NGC 5846), and then compute their DM annihilation flux profiles by ma… more
Date: June 6, 2012
Creator: Sanchez-Conde, Miguel A.; Cannoni, Mirco; Zandanel, Fabio; Gomez, Mario E. & Prada, Francisco
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Determining mutant spectra of three RNA viral samples using ultra-deep sequencing

Description: RNA viruses have extremely high mutation rates that enable the virus to adapt to new host environments and even jump from one species to another. As part of a viral transmission study, three viral samples collected from naturally infected animals were sequenced using Illumina paired-end technology at ultra-deep coverage. In order to determine the mutant spectra within the viral quasispecies, it is critical to understand the sequencing error rates and control for false positive calls of viral va… more
Date: June 6, 2012
Creator: Chen, H
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

DEVELOPMENT OF A TAMPER RESISTANT/INDICATING AEROSOL COLLECTION SYSTEM FOR ENVIRONMENTAL SAMPLING AT BULK HANDLING FACILITIES

Description: Environmental sampling has become a key component of International Atomic Energy Agency (IAEA) safeguards approaches since its approval for use in 1996. Environmental sampling supports the IAEA's mission of drawing conclusions concerning the absence of undeclared nuclear material or nuclear activities in a Nation State. Swipe sampling is the most commonly used method for the collection of environmental samples from bulk handling facilities. However, augmenting swipe samples with an air monitori… more
Date: June 6, 2012
Creator: Sexton, L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Disaster Recovery: Selected Themes for Effective Long-Term Recovery

Description: Testimony issued by the Government Accountability Office with an abstract that begins "From 2008 to 2010, GAO produced a body of work on disaster recovery, including reviews of the Federal Emergency Management Agency’s (FEMA) Long-Term Community Recovery efforts, recovery lessons based on past experiences at home and abroad, the use of Community Development Block Grants and Public Assistance grants and the operation of the Office of the Federal Coordinator for Gulf Coast Rebuilding (OFC). Among… more
Date: June 6, 2012
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Effective Field Theory of Fractional Quantized Hall Nematics

Description: We present a Landau-Ginzburg theory for a fractional quantized Hall nematic state and the transition to it from an isotropic fractional quantum Hall state. This justifies Lifshitz-Chern-Simons theory - which is shown to be its dual - on a more microscopic basis and enables us to compute a ground state wave function in the symmetry-broken phase. In such a state of matter, the Hall resistance remains quantized while the longitudinal DC resistivity due to thermally-excited quasiparticles is anisot… more
Date: June 6, 2012
Creator: Mulligan, Michael; /MIT, LNS; Nayak, Chetan; /Station Q, UCSB; Kachru, Shamit & /Stanford U., Phys. Dept. /SLAC
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Energy Return on Investment - Fuel Recycle

Description: This report provides a methodology and requisite data to assess the potential Energy Return On Investment (EROI) for nuclear fuel cycle alternatives, and applies that methodology to a limited set of used fuel recycle scenarios. This paper is based on a study by Lawrence Livermore National Laboratory and a parallel evaluation by AREVA Federal Services LLC, both of which were sponsored by the DOE Fuel Cycle Technologies (FCT) Program. The focus of the LLNL effort was to develop a methodology that… more
Date: June 6, 2012
Creator: Halsey, W.; Simon, A. J.; Fratoni, M.; Smith, C.; Schwab, P. & Murray, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fabrication of 3D Silicon Sensors

Description: Silicon sensors with a three-dimensional (3-D) architecture, in which the n and p electrodes penetrate through the entire substrate, have many advantages over planar silicon sensors including radiation hardness, fast time response, active edge and dual readout capabilities. The fabrication of 3D sensors is however rather complex. In recent years, there have been worldwide activities on 3D fabrication. SINTEF in collaboration with Stanford Nanofabrication Facility have successfully fabricated th… more
Date: June 6, 2012
Creator: Kok, A.; Hansen, T. E.; Hansen, T. A.; Lietaer, N.; Summanwar, A.; Kenney, C. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Force Structure: Improved Cost Information and Analysis Needed to Guide Overseas Military Posture Decisions

Description: A letter report issued by the Government Accountability Office with an abstract that begins "Although the Department of Defense (DOD) has conducted some analysis to support two recent global posture decisions, the full cost implications of these decisions are unknown."
Date: June 6, 2012
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

FY2012 Summary of Tasks Completed on Proteus-Thermal Work.

Description: PROTEUS is a suite of the neutronics codes, both old and new, that can be used within the SHARP codes being developed under the NEAMS program. Discussion here is focused on updates and verification and validation activities of the SHARP neutronics code, DeCART, for application to thermal reactor analysis. As part of the development of SHARP tools, the different versions of the DeCART code created for PWR, BWR, and VHTR analysis were integrated. Verification and validation tests for the integrat… more
Date: June 6, 2012
Creator: Lee, C.H. & Smith, M.A. (Nuclear Engineering Division)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Haiti Under President Martelly: Current Conditions and Congressional Concerns

Description: This report gives an overview of the current government in Haiti and status of recovery efforts following the 2010 earthquake. The Haitian government and the international donor community are implementing a 10-year recovery plan focusing on territorial, economic, social, and institutional rebuilding. The main priorities for U.S. policy regarding Haiti are to strengthen fragile democratic processes, continue to improve security, and promote economic development. Other concerns include the cost … more
Date: June 6, 2012
Creator: Taft-Morales, Maureen
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Higher Order Modes Damping Analysis for the SPX Deflecting Cavity Cyromodule

Description: A single-cell superconducting deflecting cavity operating at 2.815 GHz has been proposed and designed for the Short Pulse X-ray (SPX) project for the Advanced Photon Source (APS) upgrade. A cryomodule of 4 such cavities will be needed to produce the required 2-MV deflecting voltage. Each deflecting cavity is equipped with one fundamental power coupler (FPC), one lower order mode (LOM) coupler, and two higher order mode (HOM) couplers to achieve the stringent damping requirements for the unwante… more
Date: June 6, 2012
Creator: Xiao, L; Li, Z.; Ng, C.; Nassiri, A.; Waldschmidt, G.; Wu, G. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Highway Projects: Some Federal and State Practices to Expedite Completion Show Promise

Description: A letter report issued by the Government Accountability Office with an abstract that begins "The process to complete highway projects is complicated and lengthy due to multiple factors. Specifically, highway projects can involve many stakeholders, including agencies at all levels of government, nongovernmental organizations, and the public. These stakeholders perform a number of tasks—for major highway projects, as many as 200 steps from planning to construction—but their level of involvement v… more
Date: June 6, 2012
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

INDEPENDENT VERIFICATION SURVEY OF THE SPRU LOWER LEVEL HILLSIDE AREA AT THE KNOLLS ATOMIC POWER LABORATORY NISKAYUNA, NEW YORK

Description: During August 10, 2011 through August 19, 2011, and October 23, 2011 through November 4, 2011, ORAU/ORISE conducted verification survey activities at the Separations Process Research Unit (SPRU) site that included in-process inspections, surface scans, and soil sampling of the Lower Level Hillside Area. According to the Type-B Investigation Report, Sr-90 was the primary contributor to the majority of the activity (60 times greater than the Cs-137 activity). The evaluation of the scan data and s… more
Date: June 6, 2012
Creator: Harpenau, Evan M. & Weaver, Phyllis C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Initial proof-of-principle for near room temperature Xe and Kr separation from air with MOFs

Description: Materials were developed and tested in support of the U.S. Department of Energy, Office of Nuclear Energy, Fuel Cycle Technology Separations and Waste Forms Campaign. Specifically, materials are being developed for the removal of Xenon and krypton from gaseous products of nuclear fuel reprocessing unit operations. During FY 2012, Three Metal organic framework (MOF) structures were investigated in greater detail for the removal and storage of Xe and Kr from air at room temperature. Our breakthro… more
Date: June 6, 2012
Creator: Thallapally, Praveen K. & Strachan, Denis M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Initial Testing of the Mark-0 X-Band RF Gun at SLAC

Description: A new X-band RF gun (Mark-0) has been assembled, tuned and was tested in the ASTA facility at SLAC. This gun has been improved from an earlier gun used in Compton-scattering experiments at SLAC by the introduction of a racetrack dual-input coupler to reduce quadrupole fields. Waveguide-to-coupler irises were also redesigned to reduce surface magnetic fields and therefore peak pulse surface heating. Tests of this photocathode gun will allow us to gain early operational experience for beam tests … more
Date: June 6, 2012
Creator: Vlieks, Arnold; Adolphsen, C.; Dolgashev, V.; Lewandowski, J.; Limborg, Cecile & Weathersby, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

LCLS-II Undulator Tolerance Analysis

Description: The SLAC National Accelerator Laboratory is building a new FEL user facility, LCLS-II, as a major upgrade to the Linear Coherent Light Source (LCLS). The upgrade will include two new Free Electron Lasers (FELs), to generate soft (SXR) and hard x-ray (HXR) SASE FEL radiation, based on planar, variable gap hybrid undulators with two different undulator periods (SXU: 55 mm, HXU: 32 mm). An algebraic FEL tolerance analysis for the undulator lines, including tuning, alignment, and phase correction t… more
Date: June 6, 2012
Creator: Nuhn, H. D.; Marks, S. & Wu, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Legislative Branch: FY2013 Appropriations

Description: The legislative branch appropriations bill provides funding for the Senate; House of Representatives; Joint Items; Capitol Police; Office of Compliance; Congressional Budget Office; Architect of the Capitol; Library of Congress, including the Congressional Research Service; Government Printing Office; Government Accountability Office; and Open World Leadership Center. The legislative branch FY2013 budget request of $4.512 billion, which is submitted to the President by the legislative branch a… more
Date: June 6, 2012
Creator: Brudnick, Ida A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen