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Influenza Pandemic: Federal Executive Boards' Ability to Contribute to Pandemic Preparedness
Testimony issued by the Government Accountability Office with an abstract that begins "The federal executive boards (FEB) bring together federal agency and community leaders in major metropolitan areas outside Washington, D.C., to discuss issues of common interest, including pandemic influenza. This testimony addresses the FEBs' emergency support roles and responsibilities, their potential role in pandemic influenza preparedness, and some of the key challenges they face in providing emergency support services. The issues discussed in the testimony are based on the GAO report, The Federal Workforce: Additional Steps Needed to Take Advantage of Federal Executive Boards' Ability to Contribute to Emergency Operations (GAO-07- 515, May 2007). GAO selected 14 of the 28 FEBs for review because they coordinate the greatest number of federal employees or had recent emergency management experience. In this report, GAO recommended that the Director of the Office of Personnel Management (OPM) work with the Federal Emergency Management Agency (FEMA) to formally define the FEBs' role in emergency planning and response. In completing the FEB strategic plan, OPM should also establish accountability for the boards' emergency support activities and develop a proposal to address the uncertainty of funding sources for the boards. While not commenting specifically on the …
Date:
September 28, 2007
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Royalties Collection: Ongoing Problems with Interior's Efforts to Ensure A Fair Return for Taxpayers Require Attention
Testimony issued by the Government Accountability Office with an abstract that begins "The Department of the Interior's Minerals Management Service (MMS) is charged with collecting and administering royalties paid by companies developing fossil and renewable energy resources on federal lands and within federal waters. To promote development of oil and natural gas, fossil resources vital to meeting the nation's energy needs, the federal government at times has provided "royalty relief" waiving or reducing the royalties that companies must pay. In these cases, relief is typically applicable only if prices remain below certain threshold levels. Oil and gas royalties can be taken at MMS's discretion either "in value" as cash or "in kind" as a share of the product itself. Additionally, MMS also collects royalties on the development of geothermal energy resources--a renewable source of heat and electricity--on federal lands. This statement provides (1) an update of our work regarding the fiscal impacts of royalty relief for leases issued under the Deep Water Royalty Relief Act of 1995; (2) a description of our recent work on the administration of the royalties in kind program, as well as ongoing work on related issues; and (3) information on the challenges to collecting geothermal …
Date:
March 28, 2007
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Military Construction: Observations on Mismanagement of the Kaiserslautern Military Community Center
Testimony issued by the Government Accountability Office with an abstract that begins "According to the Air Force, the Kaiserslautern Military Community Center (KMCC), an over 800,000 square-foot facility, is currently the Department of Defense's largest single-facility project under construction. It is intended to provide lodging, dining, shopping, and entertainment for thousands of U.S. military and civilian personnel and their families in the Kaiserslautern, Germany, area. Initial costs for the KMCC were estimated at about $150 million, with funding coming from a variety of appropriated and nonappropriated fund sources. The construction for the project, which began in late 2003, was originally scheduled to be completed in early 2006. This testimony discusses GAO findings to date related to the KMCC. The testimony describes (1) current problems facing the KMCC, (2) causes for identified problems, and (3) the effect of problems identified and their implications for future projects in Germany. To address our objectives, we interviewed officials from the U.S. Air Force, Army and Air Force Exchange Service, U.S. Army Corps of Engineers, and German government. We also conducted a site visit and reviewed relevant KMCC documents. We plan to continue our work and make recommendations to the Air Force as appropriate."
Date:
June 28, 2007
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Advanced Energy Technologies: Key Challenges to Their Development and Deployment
Testimony issued by the Government Accountability Office with an abstract that begins "For decades, the nation has benefited from relatively inexpensive energy, but it has also grown reliant on fossil fuels--oil, natural gas, and coal. Periodic imported oil supply disruptions have led to price shocks, yet the nation's dependence on imported energy is greater than ever. Fossil fuel emissions of carbon dioxide--linked to global warming--have also raised environmental concerns. The Department of Energy (DOE) has funded research and development (R&D) on advanced renewable, fossil, and nuclear energy technologies. GAO's report entitled DOE: Key Challenges Remain for Developing and Deploying Advanced Energy Technologies to Meet Future Needs examined the (1) R&D funding trends and strategies for developing advanced energy technologies; (2) key barriers to developing and deploying advanced energy technologies; and (3) efforts of the states and six selected countries to develop and deploy advanced energy technologies. GAO reviewed DOE R&D budget data and strategic plans and obtained the views of experts in DOE, industry, and academia, as well as state and foreign government officials."
Date:
February 28, 2007
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Millennium Challenge Corporation: Progress and Challenges with Compacts in Africa
Testimony issued by the Government Accountability Office with an abstract that begins "In January 2004, Congress established the Millennium Challenge Corporation (MCC) to administer the Millennium Challenge Account for foreign assistance. MCC's mission is to reduce poverty by supporting sustainable, transformative economic growth in partnership with developing countries that create and maintain sound policy environments. MCC signs compacts obligating funds for such projects with countries it selects as eligible for this assistance, according to criteria outlined in MCC's authorizing legislation. Each compact has a maximum duration of 5 years. After signed compacts enter into force, MCC begins to disburse funds. For fiscal years 2004 to 2007, MCC received appropriations of almost $6 billion. MCC has obligated almost $3 billion for 11 compacts; $1.5 billion of this amount is for 5 compacts in sub-Saharan Africa (Africa). This testimony examines (1) the pace of MCC's initiation of compacts in Africa, (2) MCC projects and management structures in African countries with signed compacts, and (3) MCC's progress in disbursing compact funds. In preparing this testimony, GAO drew from, and updated, previous reports on MCC's compact development, obligations, implementation, management, and disbursements."
Date:
June 28, 2007
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Information Security: Veterans Affairs Needs to Address Long-Standing Weaknesses
Testimony issued by the Government Accountability Office with an abstract that begins "Security breaches at the Department of Veterans Affairs (VA) and other public and private organizations have highlighted the importance of well-designed and implemented information security programs. GAO was asked to testify on its past work on VA's information security program, as well as ongoing reviews that it is conducting at VA. In developing its testimony, GAO drew on over 15 of its previous reports and testimonies, as well as reports by the department's inspector general (IG)."
Date:
February 28, 2007
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Homeland Security: Transforming Departmentwide Financial Management Systems Remains a Challenge
Testimony issued by the Government Accountability Office with an abstract that begins "Since 2003, when the Department of Homeland Security (DHS) began operations, it has faced the difficult challenge of bringing together 22 diverse agencies and developing an integrated financial management system to provide reliable, timely, and useful financial information. GAO's 2007 report, Homeland Security: Departmentwide Integrated Financial Management Systems Remain a Challenge, GAO-07-536, emphasized the key issues related to DHS attempting to transform its financial management systems. For today's hearing, this testimony, based on GAO's recent report, (1) summarizes DHS's financial system transformation efforts, (2) points out key financial system transformation challenges at DHS, and (3) highlights the building blocks that DHS should consider to form the foundation for successful financial management system transformation efforts."
Date:
June 28, 2007
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
SURFACE GEOPHYSICAL EXPLORATION OF B & BX & BY TANK FARMS AT THE HANFORD SITE RESULTS OF BACKGROUND CHARACTERIZATION WITH MAGNETICS AND ELECTROMAGNETICS
This report documents the results of preliminary surface geophysical exploration activities performed between October and December 2006 at the B, BX, and BY tank farms (B Complex). The B Complex is located in the 200 East Area of the U. S. Department of Energy's Hanford Site in Washington State. The objective of the preliminary investigation was to collect background characterization information with magnetic gradiometry and electromagnetic induction to understand the spatial distribution of metallic objects that could potentially interfere with the results from high resolution resistivity survey. Results of the background characterization show there are several areas located around the site with large metallic subsurface debris or metallic infrastructure.
Date:
September 28, 2007
Creator:
DA, MYERS
Object Type:
Report
System:
The UNT Digital Library
Magnetic Profiles in Ferromagnetic/Superconducting Superlattices.
The interplay between ferromagnetism and superconductivity has been of longstanding fundamental research interest to scientists, as the competition between these generally mutually exclusive types of long-range order gives rise to a rich variety of physical phenomena. A method of studying these exciting effects is by investigating artificially layered systems, i.e. alternating deposition of superconducting and ferromagnetic thin films on a substrate, which enables a straight-forward combination of the two types of long-range order and allows the study of how they compete at the interface over nanometer length scales. While originally studies focused on low temperature superconductors interchanged with metallic ferromagnets, in recent years the scope has broadened to include superlattices of high T{sub c} superconductors and colossal magnetoresistance oxides. Creating films where both the superconducting as well as the ferromagnetic layers are complex oxide materials with similar crystal structures (Figure 1), allows the creation of epitaxial superlattices, with potentially atomically flat and ordered interfaces.
Date:
February 28, 2007
Creator:
te Velthuis, S. G. E.; Hoffmann, A.; Santamaria, J.; Division, Materials Science & Madrid, Univ. Complutense de
Object Type:
Report
System:
The UNT Digital Library
Advanced Amine Solvent Formulations and Process Integration for Near-Term CO2 Capture Success
This Phase I SBIR project investigated the economic and technical feasibility of advanced amine scrubbing systems for post-combustion CO2 capture at coal-fired power plants. Numerous combinations of advanced solvent formulations and process configurations were screened for energy requirements, and three cases were selected for detailed analysis: a monoethanolamine (MEA) base case and two “advanced” cases: an MEA/Piperazine (PZ) case, and a methyldiethanolamine (MDEA) / PZ case. The MEA/PZ and MDEA/PZ cases employed an advanced “double matrix” stripper configuration. The basis for calculations was a model plant with a gross capacity of 500 MWe. Results indicated that CO2 capture increased the base cost of electricity from 5 cents/kWh to 10.7 c/kWh for the MEA base case, 10.1 c/kWh for the MEA / PZ double matrix, and 9.7 c/kWh for the MDEA / PZ double matrix. The corresponding cost per metric tonne CO2 avoided was 67.20 $/tonne CO2, 60.19 $/tonne CO2, and 55.05 $/tonne CO2, respectively. Derated capacities, including base plant auxiliary load of 29 MWe, were 339 MWe for the base case, 356 MWe for the MEA/PZ double matrix, and 378 MWe for the MDEA / PZ double matrix. When compared to the base case, systems employing advanced solvent formulations and …
Date:
June 28, 2007
Creator:
Fisher, Kevin S.; Searcy, Katherine; Rochelle, Gary T.; Ziaii, Sepideh & Schubert, Craig
Object Type:
Report
System:
The UNT Digital Library
Sharp Reduction of the Secondary Electron Emission Yield from Grooved Surfaces
The effect of an artificially-enhanced rough surface on the secondary electron emission yield (SEY) was investigated both theoretically and experimentally. Analytical studies on triangular and rectangular grooved surfaces show the connection between the characteristic parameters of a given geometry to the SEY reduction. The effect of a strong magnetic field is also discussed. SEY of grooved samples have been measured and the results agree with Monte-Carlo simulations.
Date:
November 28, 2007
Creator:
Pivi, M. T. F.; King, F. K.; Kirby, R. E.; Ruabenheimer, T. O.; Stupakov, G. & Le Pimpec, F.
Object Type:
Article
System:
The UNT Digital Library
OPTICAL AND DYNAMIC PROPERTIES OF UNDOPED AND DOPED SEMICONDUCTOR NANOSTRUCTURES
This chapter provides an overview of some recent research activities on the study of optical and dynamic properties of semiconductor nanomaterials. The emphasis is on unique aspects of these properties in nanostructures as compared to bulk materials. Linear, including absorption and luminescence, and nonlinear optical as well as dynamic properties of semiconductor nanoparticles are discussed with focus on their dependence on particle size, shape, and surface characteristics. Both doped and undoped semiconductor nanomaterials are highlighted and contrasted to illustrate the use of doping to effectively alter and probe nanomaterial properties. Some emerging applications of optical nanomaterials are discussed towards the end of the chapter, including solar energy conversion, optical sensing of chemicals and biochemicals, solid state lighting, photocatalysis, and photoelectrochemistry.
Date:
September 28, 2007
Creator:
Grant, C D & Zhang, J Z
Object Type:
Article
System:
The UNT Digital Library
Mapping the geometry of the F4 group
In this paper, we present a construction of the compact form of the exceptional Lie group F4 by exponentiating the corresponding Lie algebra f4. We realize F4 as the automorphisms group of the exceptional Jordan algebra, whose elements are 3 x 3 Hermitian matrices with octonionic entries. We use a parametrization which generalizes the Euler angles for SU(2) and is based on the fibration of F4 via a Spin(9) subgroup as a fiber. This technique allows us to determine an explicit expression for the Haar invariant measure on the F4 group manifold. Apart from shedding light on the structure of F4 and its coset manifold OP2 = F4/Spin(9), the octonionic projective plane, these results are a prerequisite for the study of E6, of which F4 is a (maximal) subgroup.
Date:
May 28, 2007
Creator:
Bernardoni, Fabio; Cacciatori, Sergio L; Scotti, Antonio & Cerchiai, Bianca L.
Object Type:
Article
System:
The UNT Digital Library
Final Report - SRNL Agreement #AC51296V SEM, FIB, TEM Studies of CZT Samples
The aims of this study are: (1) to characterize the surfaces of samples 3-7-8-3 and 4-1-3 using SEM, FIB and TEM techniques; (2) identify raised surface features; (3) prepare FIB-TEM lift-out sections from identified raised surfaces; and (4) perform detailed TEM characterization of FIB Sections. Focusing on the composition and crystallinity of the phases within the sections, including impurities.
Date:
August 28, 2007
Creator:
Bradley, J; Dai, Z R; Graham, G A & Teslich, N E
Object Type:
Report
System:
The UNT Digital Library
Effect of Organic Acid Additions on the General and Localized Corrosion Susceptibility of Alloy 22 in Chloride Solutions
Electrochemical studies such as cyclic potentiodynamic polarization (CPP) and electrochemical impedance spectroscopy (EIS) were performed to determine the corrosion behavior of Alloy 22 (N06022) in 1M NaCl solutions at various pH values from acidic to neutral at 90 C. All the tested material was wrought Mill Annealed (MA). Tests were also performed in NaCl solutions containing weak organic acids such as oxalic, acetic, citric and picric. Results show that the corrosion rate of Alloy 22 was significantly higher in solutions containing oxalic acid than in solutions of pure NaCl at the same pH. Citric and picric acids showed a slightly higher corrosion rate, and acetic acid maintained the corrosion rate of pure chloride solutions at the same pH. Organic acids revealed to be weak inhibitors for crevice corrosion. Higher concentration ratios, compared to nitrate ions, were needed to completely inhibit crevice corrosion in chloride solutions. Results are discussed considering acid dissociation constants, buffer capacity and complex formation constants of the different weak acids.
Date:
August 28, 2007
Creator:
Carranza, R M; Giordano, C M; Rodr?guez, M A; Ilevbare, G O & Rebak, R B
Object Type:
Article
System:
The UNT Digital Library
Appliances, Lighting, Electronics, and Miscellaneous EquipmentElectricity Use in New Homes
The "Other" end-uses (appliances, lighting, electronics, andmiscellaneous equipment) continue to grow. This is particularly true innew homes, where increasing floor area and amenities are leading tohigher saturation of these types of devices. This paper combines thefindings of several field studies to assess the current state ofknowledge about the "Other" end-uses in new homes. The field studiesinclude sub-metered measurements of occupied houses in Arizona, Florida,and Colorado, as well as device-level surveys and power measurements inunoccupied new homes. We find that appliances, lighting, electronics, andmiscellaneous equipment can consume from 46 percent to 88 percent ofwhole-house electricity use in current low-energy homes. Moreover, theannual consumption for the "Other" end-uses is not significantly lower innew homes (even those designed for low energy use) compared to existinghomes. The device-level surveys show that builder-installed equipment isa significant contributor to annual electricity consumption, and certaindevices that are becoming more common in new homes, such as structuredwiring systems, contribute significantly to this power consumption. Thesefindings suggest that energy consumption by these "Other" end uses isstill too large to allow cost-effective zero-energy homes.
Date:
February 28, 2007
Creator:
Brown, Richard E.; Rittelman, William; Parker, Danny & Homan,Gregory
Object Type:
Article
System:
The UNT Digital Library
Synthesis and Characterization of Bimodal Nanoporous Cu Foams: Working Towards Inertial Fusion Energy
For the National Ignition Facility, at the Lawrence Livermore National Laboratory, nanoporous structures play a crucial role in the development of targets for high energy density experiments. Here we present a new bottom-up synthesis technique termed filter-casting for the creation of bimodal macro/nanoporous Cu structures. Homogeneous nanoporous monoliths can be synthesized using Cu nanoparticles and bimodal porosities can be achieved using sacrificial polystyrene spheres as a template. Control over the structure and composition is critical for target manufacturing. The measured densities of the Cu foam range between 1070-3390 mg/cm{sup 3}. Filter-casting is a powerful new method for directly synthesizing large nanoporous monoliths with predetermined composition, pore size, and pore structure.
Date:
September 28, 2007
Creator:
Cervantes, O; Hayes, J R & Hamza, A
Object Type:
Article
System:
The UNT Digital Library
Phosphor-Free Solid State Light Sources
The objective of this work was to demonstrate a light emitting diode that emitted white light without the aid of a phosphor. The device was based on the combination of a nitride LED and a fluorescing ZnO substrate. The early portion of the work focused on the growth of ZnO in undoped and doped form. The doped ZnO was successfully engineered to emit light at specific wavelengths by incorporating various dopants into the crystalline lattice. Thereafter, the focus of the work shifted to the epitaxial growth of nitride structures on ZnO. Initially, the epitaxy was accomplished with molecular beam epitaxy (MBE). Later in the program, metallorganic chemical vapor deposition (MOCVD) was successfully used to grow nitrides on ZnO. By combining the characteristics of the doped ZnO substrate with epitaxially grown nitride LED structures, a phosphor-free white light emitting diode was successfully demonstrated and characterized.
Date:
February 28, 2007
Creator:
Nause, Jeff E; Ferguson, Ian & Doolittle, Alan
Object Type:
Report
System:
The UNT Digital Library
Development of Wind-and-React Bi-2212 Accelerator MagnetTechnology
We report on the progress in our R&D program, targetedto develop the technology for the application of Bi2Sr2CaCu2Ox (Bi-2212)in accelerator magnets. The program uses subscale coils, wound frominsulated cables, to study suitable materials, heat treatmenthomogeneity, stability, and effects ofmagnetic field and thermal andelectro-magnetic loads. We have addressed material and reaction relatedissues and report onthe fabrication, heat treatment, and analysis ofsubscale Bi-2212 coils. Such coils can carry a current on the order of5000 A and generate, in various support structures, magnetic fields from2.6 to 9.9 T. Successful coils are therefore targeted towards a hybridNb3Sn-HTS magnet which will demonstrate the feasibility of Bi-2212 foraccelerator magnets, and open a new magnetic field realm, beyond what isachievable with Nb3Sn.
Date:
August 28, 2007
Creator:
Godeke, A.; Cheng, D.; Dietderich, D. R.; English, C. D.; Felice, H.; Hannaford, C. R. et al.
Object Type:
Article
System:
The UNT Digital Library
Chunking of Large Multidimensional Arrays
Data intensive scientific computations as well on-lineanalytical processing applications as are done on very large datasetsthat are modeled as k-dimensional arrays. The storage organization ofsuch arrays on disks is done by partitioning the large global array intofixed size hyper-rectangular sub-arrays called chunks or tiles that formthe units of data transfer between disk and memory. Typical queriesinvolve the retrieval of sub-arrays in a manner that accesses all chunksthat overlap the query results. An important metric of the storageefficiency is the expected number of chunks retrieved over all suchqueries. The question that immediately arises is "what shapes of arraychunks give the minimum expected number of chunks over a query workload?"In this paper we develop two probabilistic mathematical models of theproblem and provide exact solutions using steepest descent and geometricprogramming methods. Experimental results, using synthetic workloads onreal life data sets, show that our chunking is much more efficient thanthe existing approximate solutions.
Date:
February 28, 2007
Creator:
Rotem, Doron; Otoo, Ekow J. & Seshadri, Sridhar
Object Type:
Report
System:
The UNT Digital Library
Emissions Inventory Report Summary for Los Alamos National Laboratory for Calendar Year 2006
Los Alamos National Laboratory (LANL) is subject to annual emissions reporting requirements for regulated air pollutants under Title 20 of the New Mexico Administrative Code, Chapter 2, Part 73 (20.2.73 NMAC), Notice of Intent and Emissions Inventory Requirements. The applicability of the requirements is based on the Laboratory's potential to emit 100 tons per year of suspended particulate matter, nitrogen oxides, carbon monoxide, sulfur oxides, or volatile organic compounds. Additionally, on April 30, 2004, LANL was issued a Title V Operating Permit from the New Mexico Environment Department, Air Quality Bureau, under 20.2.70 NMAC. Modification Number 1 to this Title V Operating Permit was issued on June 15, 2006 (Permit No P-100M1) and includes emission limits and operating limits for all regulated sources of air pollution at LANL. The Title V Operating Permit also requires semi-annual emissions reporting for all sources included in the permit. This report summarizes both the annual emissions inventory reporting and the semi-annual emissions reporting for LANL for calendar year 2006. LANL's 2006 emissions are well below the emission limits in the Title V Operating Permit.
Date:
September 28, 2007
Creator:
Group, Ecology and Air Quality
Object Type:
Report
System:
The UNT Digital Library
Prediction of the bubble point pressure for the binary mixture of ethanol and 1,1,1,2,3,3,3-heptafluoropropane from Gibbs ensemble Monte Carlo simulations using the TraPPE force field
Configurational-bias Monte Carlo simulations in the Gibbs ensemble using the TraPPE force field were carried out to predict the pressure-composition diagrams for the binary mixture of ethanol and 1,1,1,2,3,3,3-heptafluoropropane at 283.17 and 343.13 K. A new approach is introduced that allows to scale predictions at one temperature based on the differences in Gibbs free energies of transfer between experiment and simulation obtained at another temperature. A detailed analysis of the molecular structure and hydrogen bonding for this fluid mixture is provided.
Date:
February 28, 2007
Creator:
Rai, N; Rafferty, J L; Maiti, A & Siepmann, I
Object Type:
Article
System:
The UNT Digital Library
Search for CPT and Lorentz Violation in B0-B0bar Oscillations with Dilepton Events
We report results of a search for CPT and Lorentz violation in B{sup 0}-{bar B}{sup 0} oscillations using inclusive dilepton events from 232 million {Upsilon}(4S) {yields} B{bar B} decays recorded by the BABAR detector at the PEP-II B Factory at SLAC. We find 2.8{sigma} significance, compatible with no signal, for variations in the complex CPT violation parameter z at the Earth's sidereal frequency and extract values for the quantities {Delta}a{sub {mu}} in the general Lorentz-violating standard-model extension. The spectral powers for variations in z over the frequency range 0.26 year{sup -1} to 2.1 day{sup -1} are also compatible with no signal.
Date:
November 28, 2007
Creator:
Collaboration, The BABAR & Aubert, B.
Object Type:
Article
System:
The UNT Digital Library
Optical Damage Threshold of Silicon for Ultrafast Infrared Pulses
We present measurements of the optical damage threshold of crystalline silicon in air for ultrafast pulses in the near infrared. The wavelengths tested span a range from the telecommunications band at 1550 nm, extending to 2260 nm. We discuss the motivation for the measurements and give theoretical context. We then describe the experimental setup, diagnostics, and procedure. The results show a breakdown threshold of 0.2J/cm{sup 2} at 1550 nm and 1.06 ps FWHM pulse duration, and a weak dependence on wavelength.
Date:
November 28, 2007
Creator:
Cowan, Benjamin M. & /Tech-X, Boulder /SLAC
Object Type:
Article
System:
The UNT Digital Library