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Department of Homeland Security: Ongoing Challenges in Creating an Effective Acquisition Organization

Description: Testimony issued by the Government Accountability Office with an abstract that begins "In fiscal year 2006, the Department of Homeland Security (DHS) obligated $15.6 billion to support its broad and complex acquisition portfolio. Since it was tasked with integrating 22 separate federal agencies and organizations into one cabinet-level department, DHS has been working to create an integrated acquisition organization while addressing its ongoing mission requirements and responding to natural disa… more
Date: June 7, 2007
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
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Securing, Stabilizing, and Rebuilding Iraq: Iraqi Government Has Not Met Most Legislative, Security, and Economic Benchmarks

Description: Testimony issued by the Government Accountability Office with an abstract that begins "This testimony is intended to discuss our report on whether or not the government of Iraq has met 18 benchmarks contained in the U.S. Troop Readiness, Veterans' Care, Katrina Recovery, and Iraq Accountability Appropriations Act of 20072 (the Act). The Act requires GAO to report on the status of the achievement of these benchmarks. Consistent with GAO's core values and our desire to be fair and balanced, we al… more
Date: September 7, 2007
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
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Information Security: Agencies Report Progress, but Sensitive Data Remain at Risk

Description: Testimony issued by the Government Accountability Office with an abstract that begins "For many years, GAO has reported that weaknesses in information security are a widespread problem with potentially devastating consequences--such as intrusions by malicious users, compromised networks, and the theft of personally identifiable information--and has identified information security as a governmentwide high-risk issue. Concerned by reports of significant vulnerabilities in federal computer systems… more
Date: June 7, 2007
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
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Homeland Security: Applying Risk Management Principles to Guide Federal Investments

Description: Testimony issued by the Government Accountability Office with an abstract that begins "Since the terrorist attacks of September 11, 2001, and the subsequent creation of the Department of Homeland Security (DHS), the federal government has provided DHS with more than $130 billion in budget authority to make investments in homeland security. However, as GAO has reported, this federal financial assistance has not been guided by a clear risk-based strategic plan that fully applies risk management p… more
Date: February 7, 2007
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
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Elections: All Levels of Government Are Needed to Address Electronic Voting System Challenges

Description: Testimony issued by the Government Accountability Office with an abstract that begins "Since the 2000 national elections, concerns have been raised by various groups regarding the election process, including voting technologies. Beginning in 2001, GAO published a series of reports examining virtually every aspect of the elections process. GAO's complement of reports were used by Congress in framing the Help America Vote Act of 2002, which, among other things, provided for replacement of older v… more
Date: March 7, 2007
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
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Polar-Orbiting Operational Environmental Satellites: Restructuring Is Under Way, but Challenges and Risks Remain

Description: Testimony issued by the Government Accountability Office with an abstract that begins "The National Polar-orbiting Operational Environmental Satellite System (NPOESS) is a tri-agency acquisition--managed by the Departments of Commerce and Defense and the National Aeronautics and Space Administration--which experienced escalating costs, schedule delays, and technical difficulties. These factors led to a June 2006 decision to restructure the program thereby decreasing its complexity, increasing i… more
Date: June 7, 2007
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
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Homeland Security: Management and Programmatic Challenges Facing the Department of Homeland Security

Description: Testimony issued by the Government Accountability Office with an abstract that begins "The Department of Homeland Security (DHS) plays a key role in leading and coordinating--with stakeholders in the federal, state, local, and private sectors--the nation's homeland security efforts. GAO has conducted numerous reviews of DHS management functions as well as programs including transportation and border security, immigration enforcement and service delivery, and disaster preparation and response. T… more
Date: February 7, 2007
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
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Defense Acquisitions: Issues Concerning Airlift and Tanker Programs

Description: Testimony issued by the Government Accountability Office with an abstract that begins "The Department of Defense (DOD) has continuing efforts to modernize its airlift and tanker fleets by investing billions of dollars to modify legacy airlift systems, such as the C-5 and C-130, and procure new aircraft, such as a tanker replacement. Acquisition has been on GAO's list as a high risk area since 1990. GAO has reported that elements contributing to a sound business case for an acquisition are missi… more
Date: March 7, 2007
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
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X-ray spectroscopic study of the charge state and local orderingof room-temperature ferromagnetic Mn oped ZnO

Description: The charge state and local ordering of Mn doped into a pulsed laser deposited single-phase thin film of ZnO are investigated by using X-ray absorption spectroscopy at the O K-, Mn K- and L-edges, and X-ray emission spectroscopy at the O K- and Mn L-edge. This film is found to be ferromagnetic at room temperature. EXAFS measurement shows that Mn{sup 2+} replaces Zn site in tetrahedral symmetry, and there is no evidence for either metallic Mn or MnO in the film. Upon Mn doping, the top of O 2p va… more
Date: August 7, 2007
Creator: Guo, J.-H.; Gupta, Amita; Sharma, Parmanand; Rao, K.V.; Marcus,M.A.; Dong, C.L. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Low Temperature Surface Carburization of Stainless Steels

Description: Low-temperature colossal supersaturation (LTCSS) is a novel surface hardening method for carburization of austenitic stainless steels (SS) without the precipitation of carbides. The formation of carbides is kinetically suppressed, enabling extremely high or colossal carbon supersaturation. As a result, surface carbon concentrations in excess of 12 at. % are routinely achieved. This treatment increases the surface hardness by a factor of four to five, improving resistance to wear, corrosion, and… more
Date: December 7, 2007
Creator: Collins, Sunniva R.; Heuer, Arthur H. & Sikka, Vinod K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Sensitivity study of CO2 storage capacity in brine aquifers withclosed boundaries: Dependence on hydrogeologic properties

Description: In large-scale geologic storage projects, the injected volumes of CO{sub 2} will displace huge volumes of native brine. If the designated storage formation is a closed system, e.g., a geologic unit that is compartmentalized by (almost) impermeable sealing units and/or sealing faults, the native brine cannot (easily) escape from the target reservoir. Thus the amount of supercritical CO{sub 2} that can be stored in such a system depends ultimately on how much pore space can be made available for … more
Date: February 7, 2007
Creator: Zhou, Q.; Birkholzer, J.; Rutqvist, J. & Tsang, C-F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Geometrical Properties of a "Snow-Flake" Divertor

Description: Using a simple set of poloidal field coils, one can reach the situation where the null of the poloidal magnetic field in the divertor region is of a second order, not of the first order as in the usual X-point divertor. Then, the separatrix in the vicinity of the null-point splits the poloidal plane not into four sectors, but into six sectors, making the whole structure looking like a snow-flake (whence a name, [1]). This arrangement allows one to spread the heat load over much broader area tha… more
Date: February 7, 2007
Creator: Ryutov, D. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Mixing and CP violation in the D0 and B0(s) systems

Description: Recent developments for mixing and CP violation in the D0 and Bs systems are reviewed, including (i) the recently emerging evidence for D0-D0bar mixing and the interpretations of the measurements; (ii) the theoretical status of the calculations of Delta(Gamma_D) and Delta(m_D); (iii) some implications of the measurement of Bs mixing for new physics.
Date: May 7, 2007
Creator: Ligeti, Zoltan & Ligeti, Zoltan
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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COMPARISONS OF CRYSTALLINE SILICOTITANATE AND RESORCINOL FORMALDEHYDE MEDIA FOR CESIUM REMOVAL BY IN-TANK COLUMN PROCESSING

Description: Chemical and thermal performance of crystalline silicotitanate (CST) and resorcinol-formaldehyde (RF) ion exchange media were predicted for column configurations designed for installation in high level waste tanks and intended for cesium removal from radioactive waste supernates. Modeling predictions for the processing of a known Savannah River Site tank waste composition were generated. In a two column configuration under presumed nominal operating conditions (432 gallon packed bed, 10 gpm liq… more
Date: November 7, 2007
Creator: King, W; Frank02 Smith, F; Si Lee, S & Daniel McCabe, D
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Numerical modeling of self-limiting and self-enhancing caprock alteration induced by CO2 storage in a depleted gas reservoir

Description: This paper presents numerical simulations of reactive transport which may be induced in the caprock of an on-shore depleted gas reservoir by the geological sequestration of carbon dioxide. The objective is to verify that CO{sub 2} geological disposal activities currently being planned for the study area are safe and do not induce any undesired environmental impact. In our model, fluid flow and mineral alteration are induced in the caprock by penetration of high CO{sub 2} concentrations from the… more
Date: September 7, 2007
Creator: Xu, Tianfu; Gherardi, Fabrizio; Xu, Tianfu & Pruess, Karsten
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Disruption of Maternal DNA Repair Increases Sperm-DerivedChromosomal Aberrations

Description: The final weeks of male germ cell differentiation occur in aDNA repair-deficient environment and normal development depends on theability of the egg to repair DNA damage in the fertilizing sperm. Geneticdisruption of maternal DNA double-strand break repair pathways in micesignificantly increased the frequency of zygotes with chromosomalstructural aberrations after paternal exposure to ionizing radiation.These findings demonstrate that radiation-induced DNA sperm lesions arerepaired after fertil… more
Date: February 7, 2007
Creator: Marchetti, Francesco; Essers, Jeroun; Kanaar, Roland & Wyrobek,Andrew J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Lightest Isotope of Bh Produced Via the 209Bi(52Cr,n)260BhReaction

Description: The lightest isotope of Bh known was produced in the new {sup 209}Bi({sup 52}Cr,n){sup 260}Bh reaction at the Lawrence Berkeley National Laboratory's 88-Inch Cyclotron. Positive identification was made by observation of eight correlated alpha particle decay chains in the focal plane detector of the Berkeley Gas-Filled Separator. {sup 260}Bh decays with a 35{sub -9}{sup +19} ms half-life by alpha particle emission mainly by a group at 10.16 MeV. The measured cross section of 59{sub -20}{sup +29}… more
Date: May 7, 2007
Creator: Nelson, Sarah L.; Gregorich, Kenneth E.; Dragojevic, Irena; Garcia, Mitch A.; Gates, Jacklyn M.; Sudowe, Ralf et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Sensor Development for the Large Synoptic Survey Telescope.

Description: The Large Synoptic Survey project proposes to build an 8m-class ground-based telescope with a dedicated wide field camera. The camera consists of a large focal plane mosaic composed of multi-output CCDs with extended red response. Design considerations and preliminary characterization results for the sensors are presented in this contribution to the Workshop.
Date: June 7, 2007
Creator: O'Connor, P.; Radeka, V. & Takacs, P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Interlayer Interaction and Electronic Screening in MultilayerGraphene

Description: The unusual transport properties of graphene are the direct consequence of a peculiar bandstructure near the Dirac point. We determine the shape of the {pi} bands and their characteristic splitting, and find the transition from two-dimensional to bulk character for 1 to 4 layers of graphene by angle-resolved photoemission. By detailed measurements of the {pi} bands we derive the stacking order, layer-dependent electron potential, screening length and strength of interlayer interaction by compar… more
Date: June 7, 2007
Creator: Ohta, Taisuke; Bostwick, Aaron; McChesney, J.L.; Seyller, Thomas; Horn, Karsten & Rotenberg, Eli
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The Extinction Toward the Galactic Bulge from RR Lyrae Stars

Description: The authors present mean reddenings toward 3525 RR0 Lyrae stars from the Galactic bulge fields of the MACHO Survey. These reddenings are determined using the color at minimum V-band light of the RR0 Lyrae stars themselves and are found to be in general agreement with extinction estimates at the same location obtained from other methods. Using 3256 stars located in the Galactic Bulge, they derive the selective extinction coefficient R{sub V,VR} = A{sub V}/E(V-R) = 4.2 {+-} 0.2. this value is wha… more
Date: November 7, 2007
Creator: Kunder, A.; Popowski, P.; Cook, K. & Chaboyer, B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development of Materials Resistant to Metal Dusting Degradation.

Description: The deposition of carbon from carbonaceous gaseous environments is prevalent in many chemical and petrochemical processes such as, hydrogen-, ammonia-, and methanol-reforming systems, syngas production systems, and iron-ore reduction plants. One of the major consequences of carbon deposition is the degradation of structural materials by a phenomenon known as ''metal dusting''. There are two major issues of importance in metal dusting. First is formation of coke and subsequent deposition of coke… more
Date: December 7, 2007
Creator: Natesan, K. & Zeng, Z.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Passive Spectroscopy Bolometers, Grating- And X-Ray Imaging Crystal Spectrometers

Description: This tutorial gives a brief introduction into passive spectroscopy and describes the working principles of bolometers, a high-resolution grating spectrometer, and a novel X-ray imaging crystal spectrometer, which is of particular interest for profile measurements of the ion temperature and plasma rotation velocity on ITER and future burning plasma experiments.
Date: November 7, 2007
Creator: Bitter, M.; Hill, K. W.; Scott, S.; Paul, S.; Ince-Cushmann, A.; Reinke, M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Design and Development of a 100 MVA HTS Generator for Commercial Entry

Description: In 2002, General Electric and the US Department of Energy (DOE) entered into a cooperative agreement for the development of a commercialized 100 MVA generator using high temperature superconductors (HTS) in the field winding. The intent of the program was to: (1) identify and develop technologies that would be needed for such a generator; (2) develop conceptual designs for generators with ratings of 100 MVA and higher using HTS technology; (3) perform proof of concept tests at the 1.5 MW level … more
Date: June 7, 2007
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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