Collection
Office of Scientific & Technical Information Technical Reports
312
Texas Laws and Resolutions Archive
166
Congressional Research Service Reports
79
Government Accountability Office Reports
53
Technical Report Archive and Image Library
48
Texas Patents
45
Texas Attorney General Opinions
39
National Advisory Committee for Aeronautics Collection
26
TRAIL Microcard Collection
18
Defense Base Closure and Realignment Commission
14
7 More
Country
Decade
Month
Day
Language
778 Matching Results
Results open in a new window/tab.
Defense Inventory: Approach for Deciding Whether to Retain or Dispose of Items Needs Improvement
A letter report issued by the General Accounting Office with an abstract that begins "As of September 1999, the Department of Defense (DOD) reported that it owned secondary inventory worth about $64 billion and that $9.4 billion of that inventory is more economical to retain than to dispose of and possibly repurchase later. This report focuses on whether DOD's economic retention decisions are sound. GAO found that military components (other than the Air Force) have developed models to help make economic retention decisions on secondary inventory. However, none of the components now use their economic retention models. Instead, they and the Air Force use ceilings to limit the amount of economic retention inventory they hold. Components have not properly documented their approaches to economic retention decisions. For example, common model factors vary and assumptions are inconsistent and out of date. In addition, DOD lacked sound analytical support for the maximum levels it now uses. As a result, the components cannot depend on their models or ceilings to determine retention inventory levels without review and improvement. They also have not reviewed their approaches annually. As a result, the Department does not have a sound basis for its approach to manage items …
Date:
May 25, 2001
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Antidumping and Countervailing Duties: Options for Improving Collection
Testimony issued by the Government Accountability Office with an abstract that begins "Since fiscal year 2001, the federal government has been unable to collect over $1 billion in antidumping (AD) and countervailing (CV) duties imposed to remedy injurious, unfair foreign trade practices. These include AD duties imposed on products exported to the United States at unfairly low prices (i.e., dumped) and CV duties on products exported to the United States that were subsidized by foreign governments. These uncollected duties show that the U.S. government has not fully remedied the unfair trade practices for U.S. industry and has lost out on a substantial amount of duty revenue to the U.S. Treasury. This statement summarizes key findings from prior GAO reports on (1) past initiatives to improve AD/CV duty collection and (2) additional options for improving AD/CV duty collection."
Date:
May 25, 2011
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
The soudan 2 experiment
Soudan 2 is an 1100-ton tracking calorimeter which is being constructed to search for nucleon decay. The detector consists of finely segmented iron instrumented with drift tubes, and records three spatial coordinates and dE/dx for every gas crossing. Excellent event-reconstruction capability, particle identification, and muon sign and direction determination give superior rejection of the neutrino background to nucleon decay in many modes. The first 275 tons of Soudan 2 is operating and a charged-particle test beam calibration is under way. Construction is scheduled for completion in 1992. 4 refs., 6 figs., 2 tabs.
Date:
May 25, 1989
Creator:
Ayres, D.S.
Object Type:
Article
System:
The UNT Digital Library
Network architecture functional description and design
This report provides a top level functional description and design for the development and implementation of the central network to support the next generation of SNL, Albuquerque supercomputer in a UNIX{reg sign} environment. It describes the network functions and provides an architecture and topology.
Date:
May 25, 1989
Creator:
Stans, L.; Bencoe, M.; Brown, D.; Kelly, S.; Pierson, L. & Schaldach, C.
Object Type:
Report
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
Federal Acquisition: Increased Attention to Vehicle Fleets Could Result in Savings
A letter report issued by the General Accounting Office with an abstract that begins "Federal agencies spend about $1.7 billion annually to operate a fleet of about 387,000 vehicles. During the last decade, concerns have been raised about whether agencies have more vehicles than they need. In an April 2002 letter to federal agencies, the Office of Management and Budget stated that the size of the federal fleet seemed excessive. GAO was asked to determine (1) the extent to which agencies ensure that their fleets are the right size to meet agency missions, (2) whether potential savings could result from the disposal of unneeded vehicles, and (3) what actions are being taken on a governmentwide basis to improve fleet management practices. GAO focused its review on the justification for acquiring and retaining vehicles at the Departments of Agriculture, Army, Homeland Security, Navy, and Veterans Affairs."
Date:
May 25, 2004
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Defense Management: Comprehensive Cost Information and Analysis of Alternatives Needed to Assess Military Posture in Asia
A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Defense (DOD) is currently conducting the largest transformation of military posture in the Pacific region since the end of World War II. Transforming posture in Korea, Japan, and Guam will affect tens of thousands of military personnel and their families and require the construction of hundreds of new facilities and more than 3,500 housing units. GAO was asked to examine: (1) initiatives in Korea, their cost implications, and the basis for "tour normalization;" (2) initiatives in Japan and Guam and their cost implications; and (3) the extent to which DOD estimates the total cost of posture and addresses affordability issues. GAO assessed DOD policies and procedures, interviewed relevant DOD and State Department officials, and analyzed cost data from the military services"
Date:
May 25, 2011
Creator:
United States. Government Accountability Office.
Object Type:
Report
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
Observations on Efforts to Implement the Western Hemisphere Travel Initiative on the U.S. Border with Canada
Correspondence issued by the Government Accountability Office with an abstract that begins "Securing the U.S. border has received increasing attention since the terrorist attacks of September 11, 2001. For years, U.S. and Canadian citizens have crossed the northern border using documents such as driver's licenses or birth certificates or in some cases without showing any documentation. Border crossings are commonplace; in 2005, for example, an estimated 13 million U.S. citizens crossed the northern border. In the heightened national security environment after September 11, we have previously reported that documents like driver's licenses and birth certificates can easily be obtained, altered, or counterfeited and used by terrorists to travel into and out of the country. The Intelligence Reform and Terrorism Prevention Act of 2004 requires the Secretary of Homeland Security, in consultation with the Secretary of State, to develop and implement a plan that requires a passport or other document or combination of documents that the Secretary of Homeland Security deems sufficient to show identity and citizenship for U.S. citizens and citizens of Bermuda, Canada, and Mexico when entering the United States from certain countries in North, Central, or South America. The act requires the Department of Homeland Security (DHS) and …
Date:
May 25, 2006
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
[Memorandum of Meeting: Naval Air Depot Cherry Point, North Carolina, May 25, 2005]
Memorandum of meeting regarding a briefing and tour of Naval Air Depot (NADEP) Cherry Point, NC.
Date:
May 25, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Text
System:
The UNT Digital Library
Preparation and Reactions of Base-FreeBis(1,2,4-tri-tert-butylcyclopentadienyl)uranium Oxide, Cp'2UO
Reduction of the uranium metallocene,[eta5-1,2,4-(Me3C)3C5H2]2UCl2 (1), Cp'2UCl2, in the presence of2,2'-bipyridyl and sodium naphthalene gives the dark green metallocenecomplex, Cp'2U(bipy) (6), which reacts with p-tolylazide orpyridine-N-oxide to give Cp'2U=N(p-tolyl) (7) or Cp'2U(O)(py) (8),respectively. The Lewis acid, BPh3, precipitates Ph3B(py) and gives thebase-free oxo, Cp'2UO (10), which crystallizes from pentane. Theoxometallocene 10 behaves as a nucleophile with Me3SiX reagents but itdoes not exhibit cycloaddition behavior with acetylenes, suggesting thatthe polar resonance structure, Cp'2U+-O- dominates the double bondresonance structure Cp'2U=O.
Date:
May 25, 2005
Creator:
Zi, Guofu; Werkema, Evan L.; Walter, Marc D.; Gottfriedsen,Jochen P. & Andersen, Richard A.
Object Type:
Article
System:
The UNT Digital Library
Hualapai Tribal Utility Development Project
The first phase of the Hualapai Tribal Utility Development Project (Project) studied the feasibility of establishing a tribally operated utility to provide electric service to tribal customers at Grand Canyon West (see objective 1 below). The project was successful in completing the analysis of the energy production from the solar power systems at Grand Canyon West and developing a financial model, based on rates to be charged to Grand Canyon West customers connected to the solar systems, that would provide sufficient revenue for a Tribal Utility Authority to operate and maintain those systems. The objective to establish a central power grid over which the TUA would have authority and responsibility had to be modified because the construction schedule of GCW facilities, specifically the new air terminal, did not match up with the construction schedule for the solar power system. Therefore, two distributed systems were constructed instead of one central system with a high voltage distribution network. The Hualapai Tribal Council has not taken the action necessary to establish the Tribal Utility Authority that could be responsible for the electric service at GCW. The creation of a Tribal Utility Authority (TUA) was the subject of the second objective of the project. …
Date:
May 25, 2008
Creator:
Nation, Hualapai Tribal
Object Type:
Report
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
CANCELLED Molecular dynamics simulations of noble gases in liquidwater: Solvati on structure, self-diffusion, and kinetic isotopeeffect
Despite their great importance in low-temperaturegeochemistry, self-diffusion coefficients of noble gas isotopes in liquidwater (D) have been measured only for the major isotopes of helium, neon,krypton and xenon. Data on the self-diffusion coefficients of minor noblegas isotopes are essentially non-existent and so typically are estimatedby a kinetic theory model in which D varies as the inverse square root ofthe isotopic mass (m): D proportional to m-0.5. To examine the validityof the kinetic theory model, we performed molecular dynamics (MD)simulations of the diffusion of noble gases in ambient liquid water withan accurate set of noble gas-water interaction potentials. Our simulationresults agree with available experimental data on the solvation structureand self-diffusion coefficients of the major noble gas isotopes in liquidwater and reveal for the first time that the isotopic mass-dependence ofall noble gas self-diffusion coefficients has the power-law form Dproportional to m-beta with 0<beta<0.2. Thus our results callinto serious question the widespread assumption that the square rootmodel can be applied to estimate the kinetic fractionation of noble gasisotopes caused by diffusion in ambient liquid water.
Date:
May 25, 2007
Creator:
Bourg, I.C. & Sposito, G.
Object Type:
Report
System:
The UNT Digital Library
An analytical solution for transient gas flow in a multi-wellsystem
Soil vapor extraction (SVE) combined with air injectionprovides an efficient way for the cleanup of vadose zone contaminated byvolatile organic chemicals (VOCs). A successful design of an SVE system,however, relies on a good knowledge of the induced gas flow field in thevadose zone. Analytical solutions are available to help understand thegas flow field at steady-state. However, most SVE systems must pass atransient period before reaching steady (or quasi-steady) state and thelength of the period should be system-specific. This paper presents ananalytical solution for transient gas flow in a vadose zone withextraction and injection wells. The transient solution approaches thesteady-state solution as time increases. Calculations have shown that fora shallow well (screened in a depth of less than 10 m) in a vadose zonewith an air permeability of 1 darcy (10-12 m2) or larger, the systemreaches steady-state in just several hours. Decreasing the airpermeability or increasing the screen depth increases the time to reachsteady-state. In practical applications the transient solution may berelatively insignificant in an SVE design. However, the solution can beimportant in site characterization through pneumatic tests. A procedureis provided for applying the dimensionless solution in estimating airpermeability and air-filled porosity. An example is also given to use thetransient solution …
Date:
May 25, 2006
Creator:
Shan, Chao
Object Type:
Article
System:
The UNT Digital Library
Fatique Resistant, Energy Efficient Welding Program, Final Technical Report
The program scope was to affect the heat input and the resultant weld bead geometry by synchronizing robotic weave cycles with desired pulsed waveform shapes to develop process parameters relationships and optimized pulsed gas metal arc welding processes for welding fatique-critical structures of steel, high strength steel, and aluminum. Quality would be addressed by developing intelligent methods of weld measurement that accurately predict weld bead geometry from process information. This program was severely underfunded, and eventually terminated. The scope was redirected to investigate tandem narrow groove welding of steel butt joints during the one year of partial funding. A torch was designed and configured to perform a design of experiments of steel butt weld joints that validated the feasability of the process. An initial cost model estimated a 60% cost savings over conventional groove welding by eliminating the joint preparation and reducing the weld volume needed.
Date:
May 25, 2006
Creator:
Egland, Keith & Ludewig, Howard
Object Type:
Report
System:
The UNT Digital Library
The Path of Carbon in Photosynthesis II. Amino Acids
The radioactive amino acid's synthesized from C{sup 14}O{sub 2} by green algae both in the light and in the dark after CO{sub 2}-free preillumination have been separated and identified using paper chromatography and radioautography. The radioactive amino acids identified were aspartic acid, alanine and smaller amounts of 3- and 4-carbon amino acids. This finding as well as the total absence of radioactive glutamic acid substantiates the mechanism for reduction of CO{sub 2} previously postulated by members of this laboratory.
Date:
May 25, 1948
Creator:
Stepka, W.; Benson, A. A. & Calvin, M.
Object Type:
Report
System:
The UNT Digital Library
Radiochemical Solar Neutrino Experiments - Successful and Otherwise.
Over the years, several different radiochemical systems have been proposed as solar neutrino detectors. Of these, two achieved operating status and obtained important results that helped to define the current field of neutrino physics: the first solar-neutrino experiment, the Chlorine Detector ({sup 37}Cl) that was developed by chemist Raymond Davis and colleagues at the Homestake Mine, and the subsequent Gallium ({sup 71}Ga) Detectors that were operated by (a) the SAGE collaboration at the Baksan Laboratory and (b) the GALLEX/GNO collaborations at the Gran Sasso National Laboratory. These experiments have been extensively discussed in the literature and in many previous International Neutrino Conferences. In this paper, I present important updates to the results from SAGE and GALLEX/GNO. I also review the principles of the radiochemical detectors and briefly describe several different detectors that have been proposed. In light of the well-known successes that have been subsequently obtained by real-time neutrino detectors such as Kamiokande, Super-Kamiokande, SNO, and KamLAND, I do not anticipate that any new radiochemical neutrino detectors will be built. At present, only SAGE is still operating; the Chlorine and GNO radiochemical detectors have been decommissioned and dismantled.
Date:
May 25, 2008
Creator:
Hahn,R.L.
Object Type:
Article
System:
The UNT Digital Library
Symmetry Breaking in Few Layer Graphene Films
Recently, it was demonstrated that the quasiparticledynamics, the layer-dependent charge and potential, and the c-axisscreening coefficient could be extracted from measurements of thespectral function of few layer graphene films grown epitaxially on SiCusing angle-resolved photoemission spectroscopy (ARPES). In this articlewe review these findings, and present detailed methodology for extractingsuch parameters from ARPES. We also present detailed arguments againstthe possibility of an energy gap at the Dirac crossing ED.
Date:
May 25, 2007
Creator:
Bostwick, A.; Ohta, T.; McChesney, J.L.; Emtsev, K.; Seyller,Th.; Horn, K. et al.
Object Type:
Article
System:
The UNT Digital Library
Structural analysis of flexible proteins in solution by SmallAngle X-ray Scattering combined with crystallography
In the last few years, SAXS of biological materials has been rapidly evolving and promises to move structural analysis to a new level. Recent innovations in SAXS data analysis allow ab initio shape predictions of proteins in solution. Furthermore, experimental scattering data can be compared to calculated scattering curves from the growing data base of solved structures and also identify aggregation and unfolded proteins. Combining SAXS results with atomic resolution structures enables detailed characterizations in solution of mass, radius, conformations, assembly, and shape changes associated with protein folding and functions. SAXS can efficiently reveal the spatial organization of protein domains, including domains missing from or disordered in known crystal structures, and establish cofactor or substrate-induced conformational changes. For flexible domains or unstructured regions that are not amenable for study by many other structural techniques, SAXS provides a unique technology. Here, we present SAXS shape predictions for PCNA that accurately predict a trimeric ring assembly and for a full-length DNA repair glycosylase with a large unstructured region. These new results in combination with illustrative published data show how SAXS combined with high resolution crystal structures efficiently establishes architectures, assemblies, conformations, and unstructured regions for proteins and protein complexes in solution.
Date:
May 25, 2006
Creator:
Tsutakawa, Susan E.; Hura, Greg L.; Frankel, Ken A.; Cooper,Priscilla K. & Tainer, John A.
Object Type:
Article
System:
The UNT Digital Library
Graphical Environmental Tools for Application to Gamma-Ray Energy Tracking Arrays
In this CRADA, Oak Ridge National Laboratory (ORNL) assisted RIS Corporation of Knoxville, TN, in the development of graphical environment tools for the development and programming of high speed real-time algorithms to be implemented in a Field-Programmable Gate Array (FPGA). The primary application was intended to be digital signal processing for gamma-ray spectroscopy, in particular for Gamma-Ray Energy Tracking Arrays such as the GRETINA project. Key components of this work included assembling an evaluation platform to verify designs on actual hardware, and creating various types of Simulink functional blocks for peak-shaping and constant-fraction discrimination.
Date:
May 25, 2007
Creator:
Radford, D.C.; Blair, M. & Pauly, S., Todd, R.
Object Type:
Report
System:
The UNT Digital Library
Top Operations and Maintenance (O&M) Efficiency Opportunities at DoD/Army Sites - A Guide for O&M/Energy Managers and Practitioners
This report, sponsored the Army's Energy Engineering Analysis Program, provides the Operations and Maintenance (O&M) Energy manager and practitioner with useful information about the top O&M opportunities consistently found across the DoD/Army sector. The target is to help the DoD/Army sector develop a well-structured and organized O&M program.
Date:
May 25, 2007
Creator:
Sullivan, Gregory P.; Dean, Jesse D. & Dixon, Douglas R.
Object Type:
Report
System:
The UNT Digital Library
Running fermi with one-stage compressor: advantages, layout,performance
CBP-Tech Note-345 (July 2005), devoted to a study of microbunching instability in FERMI@ELETTRA linac quotes '...the above analysis shows that the most of the gain in microbunching instability occurs after BC2, i.e. after transformation of the energy modulation to the spatial modulation that takes place in BC2. It is possible to avoid that if we use only BC1 for all our needs for bunch compression. There are also additional advantages for a mitigation of the microbunching instability related to that. First, we would need to increase R56 in BC1 (for given energy chirp in the electron beam). Second, a relative energy spread is significantly larger at BC1 than at BC2. Both these factors would contribute to instability suppression due to increased Landau damping effect.' One additional argument was however missed in that report. Instability smearing due to finite emittance is stronger in BC1 simply because the geometrical emittance is larger than in BC2. In spite of the considerations in favor of a lattice with one-stage compressor, it was thought at the time that the two bunch compressors configuration was still preferable as it appeared difficult to obtain a flat-flat distribution at the end of the linac with only one bunch …
Date:
May 25, 2007
Creator:
Cornacchia, M.; Craievich, P.; Di Mitri, S.; Penco, G.; Venturini, M. & Zholents, A.
Object Type:
Report
System:
The UNT Digital Library
Alarm System
Patent for a fire alarm system which activates when a certain temperature is detected by the device.
Date:
May 25, 1909
Creator:
Giese, Leo
Object Type:
Patent
System:
The Portal to Texas History