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Information Sharing: Definition of the Results to Be Achieved in Terrorism-Related Information Sharing Is Needed to Guide Implementation and Assess Progress
Testimony issued by the Government Accountability Office with an abstract that begins "In 2005, GAO placed the issue of information sharing for homeland security on its high-risk list of federal functions needing broad-based transformation and since then has monitored the government's progress in resolving barriers to sharing. This testimony discusses three key information sharing efforts: (1) the actions that have been taken to guide the design and implementation of the Information Sharing Environment (ISE) and to report on its progress, (2) the characteristics of state and local fusion centers and the extent to which federal efforts are helping to address some of the challenges centers reported, and (3) the progress made in developing streamlined policies and procedures for designating, marking, safeguarding, and disseminating sensitive but unclassified information. This testimony is based on GAO's products issued from March 2006 through July 2008 and selected updates conducted in July 2008."
Date:
July 23, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Electronic Payments: Many Programs Electronically Disburse Federal Benefits, and More Outreach Could Increase Use
A letter report issued by the Government Accountability Office with an abstract that begins "Traditionally, federal agencies made benefit payments by paper check, but they faced increased pressure to reduce costs and increase the convenience, security, and timeliness of payment delivery. In response to a 1996 congressional mandate, the U.S. Department of Agriculture's Food Stamp Program implemented Electronic Benefit Transfer (EBT) to distribute food stamps. According to agency evaluations, EBT has reduced program costs and fraud and offered recipients a quick, secure way to receive payment. These results spurred interest in using electronic payment methods for other benefit programs. GAO was asked to report on (1) the extent to which federal benefit programs are using electronic payments, and factors agencies consider for their use and (2) options for increasing the use of electronic payments, particularly the Department of the Treasury's (Treasury) actions to that end. GAO surveyed federal benefit programs identified from two federal databases; reviewed documents, reports, and studies on electronic payments; and interviewed federal and state agency, industry, and consumer representatives."
Date:
June 23, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Department of Homeland Security: Improvements Could Further Enhance Ability to Acquire Innovative Technologies Using Other Transaction Authority
A letter report issued by the Government Accountability Office with an abstract that begins "When the Department of Homeland Security (DHS) was created in 2002, it was granted "other transaction" authority--a special authority used to meet mission needs. While the authority provides greater flexibility to attract and work with nontraditional contractors to research, develop, and test innovative technologies, other transactions carry the risk of reduced accountability and transparency--in part because they are exempt from certain federal acquisition regulations and cost accounting standards. In 2004, GAO reported on DHS's early use of this authority. This follow-up report determines the extent to which nontraditional contractors have been involved in DHS's other transactions, and assesses DHS's management of the acquisition process when using this authority to identify additional safeguards. To conduct its work, GAO reviewed relevant statutes, guidance, and prior GAO reports on other transactions, and interviewed contracting and program management officials, as well as contractors. GAO also reviewed 53 files for agreements entered into from fiscal years 2004 through 2008 and identified those involving nontraditional contractors."
Date:
September 23, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Defense Infrastructure: Services' Use of Land Use Planning Authorities
A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Defense (DOD) is one of the largest landholding agencies in the federal government with more than 577,500 facilities at 5,300 sites on over 32 million acres. GAO has previously reported that the management of DOD-held real property is a high-risk area, in part because of deteriorating facilities and problems with excess and underutilized property. To address these problems, DOD has developed a multipart strategy involving base realignment and closure, housing privatization, and demolition of facilities that are no longer needed. DOD is also leasing out underutilized real property to gain resources to repair or construct facilities. The House Armed Services Committee Report on the National Defense Authorization Act for Fiscal Year 2008 directed the Comptroller General to provide an analysis of DOD's use of its land use planning authorities. Specifically, GAO examined (1) how DOD has used its authorities; (2) the reasons why land, buildings, and facilities on DOD installations may appear to be underutilized or not utilized; and (3) the policies and procedures used by the services to respond to requests by other federal agencies for space at a DOD installation. GAO …
Date:
July 23, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Optimizing the User Experience in a Rapid Development Framework: Dallas Genealogical Society: Focus Group 1 Discussion, July 2008
This is a report of the findings from the March 16, 2008 focus group discussion with members of the Dallas Genealogical Society. The UNT Libraries received a National Leadership Grant from the Institute of Museum and Library Services in December 2007 for a two-year project to identify the user interface requirements of genealogists interacting with the Libraries' Portal to Texas history. The IOGENE project involves genealogists in the design process beginning with the initial assessment of their requirements and continuing through usability testing of the redesigned Portal interface.
Date:
July 23, 2008
Creator:
Murray, Kathleen R.
Object Type:
Report
System:
The UNT Digital Library
Optimizing the User Experience in a Rapid Development Framework: Dallas Genealogical Society: Focus Group 2 Discussion, July 2008
This report presents findings from the March 30, 2008 focus group discussion with members of the Dallas Genealogical Society. The UNT Libraries received a National Leadership Grant from the Institute of Museum and Library Services in December 2007 for a two-year project to identify the user interface requirements of genealogists interacting with the Libraries' Portal to Texas history. The IOGENE project involves genealogists in the design process beginning with the initial assessment of their requirements and continuing through usability testing of the redesigned Portal interface.
Date:
July 23, 2008
Creator:
Murray, Kathleen R.
Object Type:
Report
System:
The UNT Digital Library
Asian Pacific Americans in the United States Congress
Asian Pacific Americans have served in both houses of Congress representing California, Hawaii, Louisiana, Oregon, Virginia, American Samoa, and Guam. They have served in leadership positions, including committee and subcommittee chairmanships. This report presents information on Senators, Representatives, and Delegates, including party affiliations, length and dates of service, and committee assignments.
Date:
June 23, 2008
Creator:
Tong, Lorraine H.
Object Type:
Report
System:
The UNT Digital Library
Foreign Science and Engineering Presence in U.S. Institutions and the Labor Force
The increased presence of foreign students in graduate science and engineering programs and in the scientific workforce has been and continues to be of concern to some in the scientific community. Enrollment of U.S. citizens in graduate science and engineering programs has not kept pace with that of foreign students in those programs. Many in the scientific community maintain that in order to compete with countries that are rapidly expanding their scientific and technological capabilities, the country needs to bring to the United States those whose skills will benefit society and will enable us to compete in the new-technology based global economy. This report analyzes this issue in detail and includes discussion of related legislation.
Date:
July 23, 2008
Creator:
Matthews, Christine M.
Object Type:
Report
System:
The UNT Digital Library
Social Services Block Grant: (Title XX of the Social Security Act)
The FY2008 Consolidated Appropriations Act (P.L. 110-161) maintains SSBG funding at $1.7 billion and maintains states' authority to transfer up to 10% of their Temporary Assistance for Needy Families (TANF) block grants to the SSBG. The $1.7 billion in regular funds mirrors funding included in both the FY2007 and FY2006 laws, but exceeds the $1.2 billion that the President proposed for FY2008, and most recently, for FY2009. The FY2009 budget also includes a proposal to eliminate the SSBG in FY2010. This report provides SSBG background information and tracks relevant legislation and appropriations measures.
Date:
June 23, 2008
Creator:
Gish, Melinda
Object Type:
Report
System:
The UNT Digital Library
Scientific Collections: Mission-Critical Infrastructure for Federal Science Agencies
This report describes the nature and state of federally-held scientific collections which exist for scientific study to provide insight about historical trends in biodiversity, climate, and ecosystems.
Date:
December 23, 2008
Creator:
National Science and Technology Council (U.S.). Committee on Science, Interagency Working Group on Scientific Collections.
Object Type:
Text
System:
The UNT Digital Library
A Virtual Reality Framework to Optimize Design, Operation and Refueling of GEN-IV Reactors.
many GEN-IV candidate designs are currently under investigation. Technical issues related to material, safety and economics are being addressed at research laboratories, industry and in academia. After safety, economic feasibility is likely to be the most important crterion in the success of GEN-IV design(s). Lessons learned from the designers and operators of GEN-II (and GEN-III) reactors must play a vital role in achieving both safety and economic feasibility goals.
Date:
April 23, 2008
Creator:
Rizwan-uddin; Karancevic, Nick; Markidis, Stefano; Dixon, Joel; Luo, Cheng & Reynolds, Jared
Object Type:
Report
System:
The UNT Digital Library
Target life time of laser ion source for low charge state ion production
Laser ion source (LIS) produces ions by irradiating pulsed high power laser shots onto the solid state target. For the low charge state ion production, laser spot diameter on the target can be over several millimeters using a high power laser such as Nd:YAG laser. In this case, a damage to the target surface is small while there is a visible crater in case of the best focused laser shot for high charge state ion production (laser spot diameter can be several tens of micrometers). So the need of target displacement after each laser shot to use fresh surface to stabilize plasma is not required for low charge state ion production. We tested target lifetime using Nd:YAG laser with 5 Hz repetition rate. Also target temperature and vacuum condition were recorded during experiment. The feasibility of a long time operation was verified.
Date:
June 23, 2008
Creator:
Kanesue,T.; Tamura, J. & Okamura, M.
Object Type:
Article
System:
The UNT Digital Library
Reactive Distillation for Esterification of Bio-based Organic Acids
The following is the final report of the three year research program to convert organic acids to their ethyl esters using reactive distillation. This report details the complete technical activities of research completed at Michigan State University for the period of October 1, 2003 to September 30, 2006, covering both reactive distillation research and development and the underlying thermodynamic and kinetic data required for successful and rigorous design of reactive distillation esterification processes. Specifically, this project has led to the development of economical, technically viable processes for ethyl lactate, triethyl citrate and diethyl succinate production, and on a larger scale has added to the overall body of knowledge on applying fermentation based organic acids as platform chemicals in the emerging biorefinery. Organic acid esters constitute an attractive class of biorenewable chemicals that are made from corn or other renewable biomass carbohydrate feedstocks and replace analogous petroleum-based compounds, thus lessening U.S. dependence on foreign petroleum and enhancing overall biorefinery viability through production of value-added chemicals in parallel with biofuels production. Further, many of these ester products are candidates for fuel (particularly biodiesel) components, and thus will serve dual roles as both industrial chemicals and fuel enhancers in the emerging bioeconomy. The …
Date:
September 23, 2008
Creator:
Fields, Nathan; Miller, Dennis J.; Asthana, Navinchandra S.; Kolah, Aspi K.; Vu, Dung & Lira, Carl T.
Object Type:
Report
System:
The UNT Digital Library
The effect of head-on beam-beam compensation on the stochastic boundaries and particle diffusion in RHIC.
To compensate the effects from the head-on beam-beam interactions in the polarized proton operation in the Relativistic Heavy Ion Collider (RHIC), an electron lens (elens) is proposed to collide head-on with the proton beam. We used an extended version of SixTrack for multiparticle beam-beam simulation in order to study the effect of the e-lens on the stochastic boundary and also on diffusion. The stochastic boundary was analyzed using Lyapunov exponents and the diffusion was characterized as the increase in the rms spread of the action. For both studies the simulations were performed with and without the e-lens and with full and partial compensation. Using the simulated values of the diffusion an attempt to calculate the emittance growth rate is presented.
Date:
June 23, 2008
Creator:
Abreu,N.; Beebe-Wang, J.; FischW; Luo, Y. & Robert-Demolaize, G.
Object Type:
Article
System:
The UNT Digital Library
An Experimental Study of Radiation-Induced Demagnetization of Insertion Device Permanent Magnets
High brilliance in the 3GeV new light source NSLS II is obtained from the high magnetic fields in insertion devices (ID). The beam lifetime is limited to 3h by single Coulomb scattering in the Bunch (Touschek effect). This effect occurs everywhere around the circumference and there is unavoidable beam loss in the adjacent low aperture insertion devices. This raises the issue of degradation and damage of the permanent magnetic material by irradiation with high energy electrons and corresponding shower particles. It is expected that IDs, especially those in-vacuum, would experience changes resulting from exposure to gamma rays, x-rays, electrons and neutrons. By expanding an on-going material radiation damage study at BNL the demagnetization effect of irradiation consisting primarily of neutrons, gamma rays and electrons on a set of NdFeB magnets is studied. Integrated doses ranging from several Mrad to a few Grad were achieved at the BNL Isotope Facility with a 112 MeV, 90 {micro}A proton beam. Detailed information on dose distributions as well as on particle energy spectra on the NdFeB magnets was obtained in realistic simulations with the MARS15 Monte-Carlo code. This paper summarizes the results of this study.
Date:
June 23, 2008
Creator:
Simos,N.; Job, P.K. & Mokhov, N.
Object Type:
Article
System:
The UNT Digital Library
Status of the NSLS-II Injection System Design
The NSLS-II is a new ultra-bright 3rd generation 3 GeV light source that will be built at Brookhaven National Laboratory. Its design is well under way. The requirements for the compact injector complex, which will continuously provide 3 GeV electrons for top-off injection into the storage ring, are demanding: high reliability, relatively high charge and low losses. The injector consists of a linear accelerator, a full-energy booster, as well as transport lines, and an injection straight section. In this paper we give an overview of the NSLS-II injector, discuss its status, specifications, and the design challenges.
Date:
June 23, 2008
Creator:
Shaftan,T.
Object Type:
Article
System:
The UNT Digital Library
ENHANCED DOE HIGH LEVEL WASTE MELTER THROUGHPUT STUDIES: SRNL GLASS SELECTION STRATEGY
The Department of Energy has authorized a team of glass formulation and processing experts at the Savannah River National Laboratory (SRNL), the Pacific Northwest National Laboratory (PNNL), and the Vitreous State Laboratory (VSL) at Catholic University of America to develop a systematic approach to increase high level waste melter throughput (by increasing waste loading with minimal or positive impacts on melt rate). This task is aimed at proof-of-principle testing and the development of tools to improve waste loading and melt rate, which will lead to higher waste throughput. Four specific tasks have been proposed to meet these objectives (for details, see WSRC-STI-2007-00483): (1) Integration and Oversight, (2) Crystal Accumulation Modeling (led by PNNL)/Higher Waste Loading Glasses (led by SRNL), (3) Melt Rate Evaluation and Modeling, and (4) Melter Scale Demonstrations. Task 2, Crystal Accumulation Modeling/Higher Waste Loading Glasses is the focus of this report. The objective of this study is to provide supplemental data to support the possible use of alternative melter technologies and/or implementation of alternative process control models or strategies to target higher waste loadings (WLs) for the Defense Waste Processing Facility (DWPF)--ultimately leading to higher waste throughputs and a reduced mission life. The glass selection strategy discussed …
Date:
January 23, 2008
Creator:
Raszewski, F; Tommy Edwards, T & David Peeler, D
Object Type:
Report
System:
The UNT Digital Library
The Design of a RapidDischarge Varistor System for the MICE Magnet Circuits
The need for a magnet circuit discharge system, in order to protect the magnet HTS leads during a power failure, has been discussed in recent MICE reports [1], [2]. In order to rapidly discharge a magnet, one has to put enough resistance across the lead. The resistance in this case is varistor that is put across the magnet in the event of a power outage. The resistance consists of several diodes, which act as constant voltage resistors and the resistance of the cables connecting the magnets in the circuit to each other and to the power supply. In order for the rapid discharge system to work without quenching the magnets, the voltage across the magnets must be low enough so that the diodes in the quench protection circuit don't fire and cause the magnet current to bypass the superconducting coils. It is proposed that six rapid discharge varistors be installed across the three magnet circuits the power the tracker solenoids, which are connected in series. The focusing magnets, which are also connected in series would have three varistors (one for each magnet). The coupling magnets would have a varistor for each magnet. The peak voltage that is allowed per varistor …
Date:
July 23, 2008
Creator:
Green, Michael A.
Object Type:
Report
System:
The UNT Digital Library
High-intensity polarized H-(proton), deuteron and 3He++ion source development at BNL.
New techniques for the production of polarized electron, H{sup -} (proton), D (D+) and {sup 3}H{sup ++} ion beams are discussed. Feasibility studies of these techniques are in progress at BNL. An Optically Pumped Polarized H{sup -} Ion Source (OPPIS) delivers beam for polarization studies in RHIC. The polarized deuteron beam will be required for the deuteron Electron Dipole Moment (EDM) experiment, and the {sup 3}H{sup ++} ion beam is a part of the experimental program for the future eRHIC (Electron Ion) collider.
Date:
June 23, 2008
Creator:
Zelenski,A.
Object Type:
Article
System:
The UNT Digital Library
Setup and performance of RHIC for the 2008 run with deuteron-gold collisions.
This year (2008) deuterons and gold ions were collided in the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory (BNL) for the first time since 2003. The setup and performance of the collider for the 2008 run is reviewed with a focus on improvements that have led to an order of magnitude increase in luminosity over that achieved in the 2003 run.
Date:
June 23, 2008
Creator:
Gardner,C.; Abreu, N.P.; Ahren, L.; Alessi, J.; Bai, M. & al., et
Object Type:
Article
System:
The UNT Digital Library
Benchmarking of collimation tracking using RHIC beam loss data.
State-of-the-art tracking tools were recently developed at CERN to study the cleaning efficiency of the Large Hadron Collider (LHC) collimation system. In order to estimate the prediction accuracy of these tools, benchmarking studies can be performed using actual beam loss measurements from a machine that already uses a similar multistage collimation system. This paper reviews the main results from benchmarking studies performed with specific data collected from operations at the Relativistic Heavy Ion Collider (RHIC).
Date:
June 23, 2008
Creator:
Robert-Demolaize,G. & Drees, A.
Object Type:
Article
System:
The UNT Digital Library
Uncoupled achromatic tilted S-bend
A particular section of the electron beam transport line, to be used in the e-cooling project [l] of the Relativistic Heavy Ion Collider (RHIC), is constrained to displace the trajectory with both horizontal and vertical offsets so that the outgoing beamline is parallel to the incoming beamline. We also require that section be achromatic in both planes. This mixed horizontal and vertical achromatic Sbend is accomplished by rotating the two dipoles and the quadrupoles of the line, about the longitudinal axis of the incoming beam. However such a rotation of the magnetic elements may couple the transported beam through the first order beam transfer matrix (linear coupling). In this paper we study a sufficient condition, that the first order transport matrix (R-matrix) can satisfy, so that this section of beam transfer line is both achromatic and linearly uncoupled. We provide a complete solution for the beam optics which satisfies both conditions.
Date:
June 23, 2008
Creator:
Tsoupas, N.; Kayran, D.; Litvinenko, V. & MacKay, W. W.
Object Type:
Article
System:
The UNT Digital Library
Multiple-code simulation study of the long-term EDZ evolution of geological nuclear waste repositories
This simulation study shows how widely different model approaches can be adapted to model the evolution of the excavation disturbed zone (EDZ) around a heated nuclear waste emplacement drift in fractured rock. The study includes modeling of coupled thermal-hydrological-mechanical (THM) processes, with simplified consideration of chemical coupling in terms of time-dependent strength degradation or subcritical crack growth. The different model approaches applied in this study include boundary element, finite element, finite difference, particle mechanics, and elastoplastic cellular automata methods. The simulation results indicate that thermally induced differential stresses near the top of the emplacement drift may cause progressive failure and permeability changes during the first 100 years (i.e., after emplacement and drift closure). Moreover, the results indicate that time-dependent mechanical changes may play only a small role during the first 100 years of increasing temperature and thermal stress, whereas such time-dependency is insignificant after peak temperature, because decreasing thermal stress.
Date:
October 23, 2008
Creator:
Rutqvist, J.; Backstrom, A.; Chijimatsu, M.; Feng, X. T.; Pan, P. Z.; Hudson, J. et al.
Object Type:
Article
System:
The UNT Digital Library
Direct-Cooled Power Electronics Substrate
The goal of the Direct-Cooled Power Electronics Substrate project is to reduce the size and weight of the heat sink for power electronics used in hybrid electric vehicles (HEVs) and plug-in hybrid electric vehicles (PHEVs). The concept proposed in this project was to develop an innovative power electronics mounting structure, model it, and perform both thermal and mechanical finite-element analysis (FEA). This concept involved integrating cooling channels within the direct-bonded copper (DBC) substrate and strategically locating these channels underneath the power electronic devices. This arrangement would then be directly cooled by water-ethylene glycol (WEG), essentially eliminating the conventional heat sink and associated heat flow path. The concept was evaluated to determine its manufacturability, its compatibility with WEG, and the potential to reduce size and weight while directly cooling the DBC and associated electronics with a coolant temperature of 105 C. This concept does not provide direct cooling to the electronics, only direct cooling inside the DBC substrate itself. These designs will take into account issues such as containment of the fluid (separation from the electronics) and synergy with the whole power inverter design architecture. In FY 2008, mechanical modeling of substrate and inverter core designs as well as thermal and …
Date:
December 23, 2008
Creator:
Wiles, R.; Ayers, C. & Wereszczak, A.
Object Type:
Report
System:
The UNT Digital Library