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Department of Homeland Security: Observations on GAO Access to Information on Programs and Activities
Testimony issued by the Government Accountability Office with an abstract that begins "In testimony before this committee and the House Committee on Appropriations, Subcommittee on Homeland Security in February 2007, GAO stated that the Department of Homeland Security (DHS) has not made its management or operational decisions transparent enough to allow Congress to be sure that the Department is effectively, efficiently, and economically using its billions of dollars of annual funding. GAO also noted that its work for Congress to assess DHS's operations has, at times, been significantly hampered by long delays in obtaining access to program documents. Following the aforementioned testimonies, GAO was asked to testify about its access issues. This testimony provides information on (1) the scope of GAO's work, (2) GAO protocols for accessing agency information, (3) DHS processes for working with GAO, (4) access issues GAO has encountered, and (5) steps GAO has taken to address these issues."
Date:
April 25, 2007
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Compact of Free Association: Implementation Activities Have Progressed, but the Marshall Islands Faces Challenges to Achieving Long-Term Compact Goals
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 to promote economic advancement and budgetary self-reliance. The trust fund is to be invested and provide income for the RMI after compact grants end. The Department of the Interior (Interior) administers and oversees this assistance. Drawing on prior GAO reports (GAO-05-633, GAO-06-590, GAO-07-163, GAO-07-513, GAO-07-514R), this testimony discusses (1) the RMI's economic prospects, (2) implementation of the amended compact to meet long-term goals, and (3) potential trust fund earnings. In conducting its prior work, GAO visited the RMI, reviewed reports, interviewed officials and experts, and used a simulation model to project the trust fund's income. Prior GAO reports recommended, among other things, that Interior work with the RMI to address lack of progress in implementing reforms; plan for declining grants; reliably measure progress; …
Date:
July 25, 2007
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Internal Control: Improvements Needed in the Library of Congress' Capitol Preservation Fund-Related Internal Controls
Correspondence issued by the Government Accountability Office with an abstract that begins "On March 13, 2007, we issued our report on our audit of the Capitol Preservation Fund's (CPF) fiscal years 2005 and 2004 financial statements, including the results of our tests of related internal control and selected provisions of laws. In that report, we noted the need to improve certain CPF-related internal controls established by the Library of Congress (Library) in conjunction with financial management services it provides to the Capitol Preservation Commission (Commission). The purpose of this report is to discuss further those internal control deficiencies and to make four recommendations to the Library for improving its CPF-related internal controls and related procedures."
Date:
May 25, 2007
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Leveraging Federal Funds for Housing, Community, and Economic Development
Correspondence issued by the Government Accountability Office with an abstract that begins "Each year the federal government funds numerous affordable housing and community and economic development initiatives through an array of programs, such as the Department of Housing and Urban Development's (HUD) Section 108 Loan Guarantee (Section 108) program. Yet, the need for federal money to fund these initiatives has continued to grow, while the federal budget increasingly has been strained by other competing funding priorities. To help finance their initiatives and achieve program goals, recipients of funding under these federal programs often have combined or "leveraged" their funds with other federal, state, local, and private sector resources. While leveraging is generally recognized favorably by public and private sector officials, its use in federal programs has not been widely analyzed. This report responds, in part, to Congress's request that we examine leveraging as it relates to federal housing, community, and economic development programs. Specifically, this interim report (1) examines the perspectives of stakeholders--government and industry officials, academics, and others with knowledge of or experience with leveraging--on the use, implications, and measurement of leveraging in housing and community and economic development programs and (2) describes the type of data HUD collects …
Date:
May 25, 2007
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
NERSC News
This month's issue has the following 3 articles: (1) Kathy Yelick is the new director for the National Energy Research Scientific Computing Center (NERSC); (2) Head of the Class--A cray XT4 named Franklin passes a rigorous test and becomes an official member of the NERSC supercomputing family; and (3) Model Comparisons--Fusion research group published several recent papers examining the results of two types of turbulence simulations and their impact on tokamak designs.
Date:
November 25, 2007
Creator:
Wang, Ucilia
Object Type:
Report
System:
The UNT Digital Library
Selective extraction of copper, mercury, silver and palladium ionsfrom water using hydrophobic ionic liquids.
Extraction of dilute metal ions from water was performed near room temperature with a variety of ionic liquids. Distribution coefficients are reported for fourteen metal ions extracted with ionic liquids containing cations 1-octyl-4-methylpyridinium [4MOPYR]{sup +}, 1-methyl-1-octylpyrrolidinium [MOPYRRO]{sup +} or 1-methyl-1-octylpiperidinium [MOPIP]{sup +}, and anions tetrafluoroborate [BF{sub 4}]{sup +}, trifluoromethyl sulfonate [TfO]{sup +} or nonafluorobutyl sulfonate [NfO]{sup +}. Ionic liquids containing octylpyridinium cations are very good for extracting mercury ions. However, other metal ions were not significantly extracted by any of these ionic liquids. Extractions were also performed with four new task-specific ionic liquids. Such liquids containing a disulfide functional group are efficient and selective for mercury and copper, whereas those containing a nitrile functional group are efficient and selective for silver and palladium.
Date:
June 25, 2007
Creator:
Papaiconomou, Nicolas; Lee, Jong-Min; Salminen, Justin; VonStosch, Moritz & Prausnitz, John M.
Object Type:
Article
System:
The UNT Digital Library
A Cell-Centered Adaptive Projection Method for the IncompressibleNavier-Stokes Equations in Three Dimensions
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. Results are presentedto demonstrate the accuracy andeffectiveness of this approach.
Date:
September 25, 2007
Creator:
Martin, D.F.; Colella, P. & Graves, D.T.
Object Type:
Article
System:
The UNT Digital Library
Design and Performance of the Matching Beamline Between the Bnl Ebis and an Rfq.
A part of a new EBIS-based heavy ion preinjector, the low energy beam transport (LEBT) section between the high current EBIS and the RFQ is a challenging design, because it must serve many functions. In addition to the requirement to provide an efficient matching between the EBIS and the RFQ, this line must serve as a fast ''switchyard'', allowing singly charged ions from external sources to be transported into the EBIS trap region, and extracted, highly charged ions to be deflected to off-axis diagnostics (time-of-flight or emittance). The space charge of the 5-10 mA extracted heavy ion beam is a major consideration in the design, and the space charge force varies for different ion beams having Q/m from 1-0.16. The line includes electrostatic lenses, spherical and parallel-plate deflectors, magnetic solenoid, and diagnostics for measuring current, charge state distributions, emittance, and profile. A prototype of this beamline has been built, and results of tests are presented.
Date:
June 25, 2007
Creator:
Alessi, J.; Beebe, E.; Brodowski, J.; Kponou, A.; Okamura, M.; Pikin, A. et al.
Object Type:
Article
System:
The UNT Digital Library
Development of Radar Navigation and Radio Data Transmission for Microhole Coiled Tubing Bottom Hole Assemblies
This Final Technical Report summarizes the research and development (R&D) work performed by Stolar Research Corporation (Stolar) under U.S. Department of Energy (DOE) Contract Number DE-FC26-04NT15477. This work involved the development of radar navigation and radio data transmission systems for integration with microhole coiled tubing bottom hole assemblies. Under this contract, Stolar designed, fabricated, and laboratory and field tested two advanced technologies of importance to the future growth of the U.S. oil and gas industry: (1) real-time measurement-while-drilling (MWD) for guidance and navigation of coiled tubing drilling in hydrocarbon reservoirs and (2) two-way inductive radio data transmission on coiled tubing for real-time, subsurface-to-surface data transmission. The operating specifications for these technologies are compatible with 3.5-inch boreholes drilled to a true vertical depth (TVD) of 5,000 feet, which is typical of coiled tubing drilling applications. These two technologies (i.e., the Stolar Data Transmission System and Drill String Radar) were developed into pre-commercial prototypes and tested successfully in simulated coiled tubing drilling conditions. Integration of these two technologies provides a real-time geosteering capability with extremely quick response times. Stolar is conducting additional work required to transition the Drill String Radar into a true commercial product. The results of this advanced development work …
Date:
March 25, 2007
Creator:
Stolarczyk, Larry G.; Stolarczyk, Gerald L.; Icerman, Larry; Howard, John & Tehrani, Hooman
Object Type:
Report
System:
The UNT Digital Library
Heavy ion fusion science research for high energy density physics and fusion applications
During the past two years, the U.S. heavy ion fusion science program has made significant experimental and theoretical progress in simultaneous transverse and longitudinal beam compression, ion-beam-driven warm dense matter targets, high brightness beam transport, advanced theory and numerical simulations, and heavy ion target designs for fusion. First experiments combining radial and longitudinal compression of intense ion beams propagating through background plasma resulted in on-axis beam densities increased by 700X at the focal plane. With further improvements planned in 2007, these results will enable initial ion beam target experiments in warm dense matter to begin next year at LBNL. We are assessing how these new techniques apply to low-cost modular fusion drivers and higher-gain direct-drive targets for inertial fusion energy.
Date:
June 25, 2007
Creator:
Logan, B. G.; Bieniosek, F. M.; Barnard, J. J.; Cohen, R. H.; Coleman, J. E.; Davidson, R. C. et al.
Object Type:
Article
System:
The UNT Digital Library
Vibration Measurements to Study the Effect of Cryogen Flow in Superconducting Quadrupole.
The conceptual design of compact superconducting magnets for the International Linear Collider final focus is presently under development. A primary concern in using superconducting quadrupoles is the potential for inducing additional vibrations from cryogenic operation. We have employed a Laser Doppler Vibrometer system to measure the vibrations in a spare RHIC quadrupole magnet under cryogenic conditions. Some preliminary results of these studies were limited in resolution due to a rather large motion of the laser head as well as the magnet. As a first step towards improving the measurement quality, a new set up was used that reduces the motion of the laser holder. The improved setup is described, and vibration spectra measured at cryogenic temperatures, both with and without helium flow, are presented.
Date:
June 25, 2007
Creator:
He, P.; Anerella, M.; Aydin, S.; Ganetis, G.; Harrison, M.; Jain, A. et al.
Object Type:
Article
System:
The UNT Digital Library
Variable Interactions in Query-Driven Visualization
One fundamental element of scientific inquiry is discoveringrelationships, particularly the interactions between different variablesin observed or simulated phenomena. Building upon our prior work in thefield of Query-Driven Visualization, where visual data analysisprocessing is focused on subsets of large data deemed to be"scientifically interesting," this new work focuses on a novel knowledgediscovery capability suitable for use with petascale class datasets. Itenables visual presentation of the presence or absence of relationships(correlations) between variables in data subsets produced by Query-Drivenmethodologies. This technique holds great potential for enablingknowledge discovery from large and complex datasets currently emergingfrom SciDAC and INCITE projects. It is sufficiently generally to beapplicable to any time of complex, time-varying, multivariate data fromstructured, unstructured or adaptive grids.
Date:
October 25, 2007
Creator:
Bethel, E. Wes; Gosink, Luke J.; Anderson, John C. & Joy, Kenneth I.
Object Type:
Report
System:
The UNT Digital Library
The Use of Small Coolers in a Magnetic Field
Small 4 K coolers are used to cool superconducting magnets.These coolers are usually used with high temperature suerconductor (HTS)leads. In most cases, magnet is shielded with iron or active shieldcoils. Thus the field at the cooler is low. There are instances when thecooler must be in a magnetic field. Gifford McMahon (GM) coolers or pulsetube coolers are commercially available to cool the magnets. This paperwill discuss how the two types of coolers are affected by the straymagnetic field. Strategies for using coolers on magnets that generatestray magnetic fields are discussed.
Date:
July 25, 2007
Creator:
Green, Michael A. & Witte, Holger
Object Type:
Article
System:
The UNT Digital Library
Expendable Precision Laser Aimer for Shaped Charges
None
Date:
October 25, 2007
Creator:
Ault, S & Kuklo, R
Object Type:
Report
System:
The UNT Digital Library
Isotopic mass-dependence of noble gas diffusion coefficients inwater
Noble gas isotopes are used extensively as tracers inhydrologic and paleoclimatic studies. These applications requireknowledge of the isotopic mass (m) dependence of noble gas diffusioncoefficients in water (D), which has not been measured but is estimatedusing experimental D-values for the major isotopes along with an untestedrelationship from kinetic theory, D prop m-0.5. We applied moleculardynamics methods to determine the mass dependence of D for four noblegases at 298 K, finding that D prop m-beta with beta<0.2, whichrefutes the kinetic theory model underlying all currentapplications.
Date:
June 25, 2007
Creator:
Bourg, I.C. & Sposito, G.
Object Type:
Article
System:
The UNT Digital Library
End-to-End Simulations for the Ebis Preinjector.
The EBIS Project at Brookhaven National Laboratory is in the second year of a four-year project. It will replace the Tandem Van de Graaff accelerators with an Electron Beam Ion Source, an RFQ, and one IH Linac cavity, as the heavy ion preinjector for the Relativistic Heavy Ion Collider (RHIC), and for the NASA Space Radiation Laboratory (NSRL). The preinjector will provide all ions species, He to U, (Q/m >0.16) at 2 MeV/amu at a repetition rate of 5 Hz, pulse length of 10-40 {micro}s, and intensities of {approx}2.0 mA. End-to-end simulations (from EBIS to the Booster injection) as well as error sensitivity studies will be presented and physics issues will be discussed.
Date:
June 25, 2007
Creator:
Raparia, D.; Alessi, J.; Kponou, A.; Pikin, A.; Ritter, J.; Minaev, S. et al.
Object Type:
Article
System:
The UNT Digital Library
Optical Faraday Cup for Heavy Ion Beams
We have been using alumina scintillators for imaging beams in heavy-ion beam fusion experiments in 2 to 4 transverse dimensions [1]. The scintillator has a limited lifetime under bombardment by the heavy ion beams. As a possible replacement for the scintillator, we are studying the technique of imaging the beam on a gas cloud. A gas cloud for imaging the beam may be created on a solid hole plate placed in the path of the beam, or by a localized gas jet. It is possible to image the beam using certain fast-quenching optical lines that closely follow beam current density and are independent of gas density. We describe this technique and show preliminary experimental data. This approach has promise to be a new fast beam current diagnostic on a nanosecond time scale.
Date:
June 25, 2007
Creator:
Bieniosek, Frank; Bieniosek, F. M.; Eylon, S.; Roy, P. K. & Yu, S. S.
Object Type:
Article
System:
The UNT Digital Library
Plasma Lens for Us Based Super Neutrino Beam at Either Fnal or Bnl.
The plasma lens concept is examined as an alternative to focusing horns and solenoids for a neutrino beam facility. The concept is based on a combined high-current lens/target configuration. Current is fed at an electrode located downstream from the beginning of the target where pion capturing is needed. The current is carried by plasma outside the target. A second plasma lens section, with an additional current feed, follows the target. The plasma is immersed in a relatively small solenoidal magnetic field to facilitate its current profile shaping to optimize pion capture. Simulations of the not yet fully optimized configuration yielded a 25% higher neutrino flux at a detector situated at 3 km from the target than the horn system for the entire energy spectrum and a factor of 2.47 higher flux for neutrinos with energy larger than 3 GeV. A major advantage of plasma lenses is in background reduction. In anti-neutrino operation, neutrino background is reduced by a factor of close to 3 for the whole spectrum, and for and for energy larger than 3 GeV, neutrino background is reduced by a factor of 3.6. Plasma lenses have additional advantages: larger axial currents, high signal purity: minimal neutrino background in …
Date:
June 25, 2007
Creator:
Hershcovitch, A.; Weng, W.; Diwan, M.; Gallardo, J.; Kirk, H.; Johnson, B. et al.
Object Type:
Article
System:
The UNT Digital Library
Numerical Study of Coulomb Scattering Effects on Electron Beamfrom a Nano-Tip
Nano-tips with high acceleration gradient around the emission surface have been proposed to generate high brightness beams. However, due to the small size of the tip, the charge density near the tip is very high even for a small number of electrons. The stochastic Coulomb scattering near the tip can degrade the beam quality and cause extra emittance growth and energy spread. In the paper, we present a numerical study of these effects using a direct relativistic N-body model. We found that emittance growth and energy spread, due to Coulomb scattering, can be significantly enhanced with respect to mean-field space-charge calculations.
Date:
June 25, 2007
Creator:
Qiang, Ji; Corlett, John N.; Lidia, Steven M.; Padmore, HowardA.; Wan, Weishi; Zholent, Andrew A. et al.
Object Type:
Article
System:
The UNT Digital Library
Performance of capillary discharge guided laser plasma wakefieldaccelerator
A GeV-class laser-driven plasma-based wakefield acceleratorhas been realized at the Lawrence Berkeley National Laboratory (LBNL).The device consists of the 40TW high repetition rate Ti:sapphire LOASISlaser system at LBNL and a gas-filled capillary discharge waveguidedeveloped at Oxford University. The operation of the capillary dischargeguided laser plasma wakefield accelerator with a capillaryof 225 mu mdiameter and 33 mm in length was analyzed in detail. The input intensitydependence suggests that excessive self-injection causes increased beamloading leading to broadband lower energy electron beam generation. Thetrigger versus laser arrival timing dependence suggests that the plasmachannel parameters can be tuned to reduce beam divergence.
Date:
June 25, 2007
Creator:
Nakamura, Kei; Esarey, Eric; Geddes, Cameron G. R.; Gonsalves, Anthony J.; Leemans, Wim P.; Panasenko, Dmitriy et al.
Object Type:
Article
System:
The UNT Digital Library
Visualization and Analysis of 3D Gene Expression Data
Recent methods for extracting precise measurements ofspatial gene expression patterns from three-dimensional (3D) image dataopens the way for new analysis of the complex gene regulatory networkscontrolling animal development. To support analysis of this novel andhighly complex data we developed PointCloudXplore (PCX), an integratedvisualization framework that supports dedicated multi-modal, physical andinformation visualization views along with algorithms to aid in analyzingthe relationships between gene expression levels. Using PCX, we helpedour science stakeholders to address many questions in 3D gene expressionresearch, e.g., to objectively define spatial pattern boundaries andtemporal profiles of genes and to analyze how mRNA patterns arecontrolled by their regulatory transcription factors.
Date:
October 25, 2007
Creator:
Bethel, E. Wes; Rubel, Oliver; Weber, Gunther H.; Hamann, Bernd & Hagen, Hans
Object Type:
Report
System:
The UNT Digital Library
Physicochemical properties and toxicities of hydrophobicpiperidinium and pyrrolidinium ionic liquids
Some properties are reported for hydrophobic ionic liquids (IL) containing 1-methyl-1-propyl pyrrolidinium [MPPyrro]{sup +}, 1-methyl-1-butyl pyrrolidinium [MBPyrro]{sup +}, 1-methyl-1-propyl piperidinium [MPPip]{sup +}, 1-methyl-1-butyl piperidinium [MBPip]{sup +}, 1-methyl-1-octylpyrrolidinium [MOPyrro]{sup +} and 1-methyl-1-octylpiperidinium [MOPip]{sup +} cations. These liquids provide new alternatives to pyridinium and imidazolium ILs. High thermal stability of an ionic liquid increases safety in applications like rechargeable lithium-ion batteries and other electrochemical devices. Thermal properties, ionic conductivities, viscosities, and mutual solubilities with water are reported. In addition, toxicities of selected ionic liquids have been measured using a human cancer cell-line. The ILs studied here are sparingly soluble in water but hygroscopic. We show some structure-property relationships that may help to design green solvents for specific applications. While ionic liquids are claimed to be environmentally-benign solvents, as yet few data have been published to support these claims.
Date:
June 25, 2007
Creator:
Salminen, Justin; Papaiconomou, Nicolas; Kumar, R. Anand; Lee,Jong-Min; Kerr, John; Newman, John et al.
Object Type:
Article
System:
The UNT Digital Library
TOWARDS 100% POLARIZATION IN THE OPTICALLY-PUMPED POLARIZED ION SOURCE.
The depolarization factors in the multi-step spin-transfer polarization technique and basic limitations on maximum polarization in the OPPIS (Optically-Pumped Polarized H{sup -} Ion Source) are discussed. Detailed studies of polarization losses in the RHIC OPPIS and the source parameters optimization resulted in the OPPIS polarization increase to 86-90%. This contributed to increasing polarization in the AGS and RHIC to 65-70%.
Date:
June 25, 2007
Creator:
ZELENSKI,A.; ALESSI, J.; KOKHANOVSKI, S.; KPONOU, A.; RITTER, B.J. & ZUBETS, V.
Object Type:
Article
System:
The UNT Digital Library
Verification Survey of the Building 315 Zero Power Reactor-6 Facility, Argonne National Laboratory-East, Argonne, Illinois
Oak Ridge Institute for Science and Education (ORISE) conducted independent verification radiological survey activities at Argonne National Laboratory’s Building 315, Zero Power Reactor-6 facility in Argonne, Illinois. Independent verification survey activities included document and data reviews, alpha plus beta and gamma surface scans, alpha and beta surface activity measurements, and instrumentation comparisons. An interim letter report and a draft report, documenting the verification survey findings, were submitted to the DOE on November 8, 2006 and February 22, 2007, respectively (ORISE 2006b and 2007).
Date:
May 25, 2007
Creator:
Adams, W. C.
Object Type:
Report
System:
The UNT Digital Library