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Equal Employment Opportunity: Information on Personnel Actions, Employee Concerns, and Oversight at Six DOE Laboratories
A letter report issued by the Government Accountability Office with an abstract that begins "In April 2002, GAO identified the need to strengthen equal employment opportunity (EEO) oversight at three Department of Energy (DOE) national weapons laboratories and recommended that DOE and the Department of Labor's (DOL) Office of Federal Contract Compliance Programs (OFCCP) collaborate to ensure the laboratories complied with EEO requirements. GAO was subsequently asked to examine six other DOE laboratories and determine (1) whether differences exist for managerial and professional women and minorities compared with men and Whites in salaries, merit pay increases, separation patterns, and promotion rates; (2) what EEO concerns laboratory women and minorities have raised; and (3) what DOE and OFCCP have done to implement GAO's earlier recommendation."
Date:
February 18, 2005
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Drug Control: U.S. Efforts in Latin America and the Caribbean
Correspondence issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on efforts to reduce the flow of drugs into the United States, focusing on the: (1) nature of the drug threat facing the United States; (2) way in which the international drug control strategy of the United States addresses the nature of the drug threat; and (3) obstacles that foreign governments and the United States face in reducing the drug threat."
Date:
February 18, 2000
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
Workforce Investment Act: Employers Are Aware of, Using, and Satisfied with One-Stop Services, but More Data Could Help Labor Better Address Employers' Needs
A letter report issued by the Government Accountability Office with an abstract that begins "The economy of the United States is fueled by 8 million private sector businesses that employ 106 million of the nation's 137 million workers. Employers are seeking better ways to meet their workforce needs as they compete in the global economy. This report examines (1) the extent to which employers, including small businesses, are aware of and using the one-stop system; (2) the degree to which employers who use one-stop services report satisfaction and what factors cause employers not to use them; and (3) what Labor has done to support employer awareness and use of the workforce system and how Labor measures its success in meeting the needs of employers."
Date:
February 18, 2005
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Information Management: Update on Freedom of Information Act Implementation Status
A letter report issued by the General Accounting Office with an abstract that begins "Based on principles of openness and accountability in government, the Freedom of Information Act (FOIA) establishes that federal agencies must provide the public with access to government information, thus enabling them to learn about government operations and decisions. To ensure appropriate implementation of FOIA, Congress requires that agencies report annually to the Attorney General information about agencies' FOIA operations. GAO has recently reported twice on the annual FOIA reports of 25 agencies. In 2001, GAO reported that data-quality issues limited the usefulness of agencies' annual reports. In 2002, GAO reported that fewer agency FOIA reports had data-quality and consistency problems in fiscal year 2001 compared with fiscal year 2000, although some fiscal year 2001 reports did have data anomalies. GAO was asked, among other things, to determine (1) trends of reported FOIA implementation between 2000 and 2002 and (2) progress the 25 agencies have made addressing reporting inconsistencies and data-quality problems in annual FOIA reports."
Date:
February 18, 2004
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Superfund Program: Updated Appropriation and Expenditure Data
Correspondence issued by the General Accounting Office with an abstract that begins "This report contains GAO's update of the appropriation and expenditure data for the Environmental Protection Agency's Superfund program since a July 2003 report."
Date:
February 18, 2004
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
Border Security: Streamlined Visas Mantis Program Has Lowered Burden on Foreign Science Students and Scholars, but Further Refinements Needed
A letter report issued by the Government Accountability Office with an abstract that begins "In February 2004, GAO reported that improvements were needed in the time taken to adjudicate visas for science students and scholars. Specifically, a primary tool used to screen these applicants for visas (the Visas Mantis program) was operating inefficiently. We found that it took an average of 67 days to process Mantis checks, and many cases were pending for 60 days or more. GAO also found that the way in which information was shared among agencies prevented cases from being resolved expeditiously. Finally, consular officers lacked sufficient program guidance. This report discusses the time to process Mantis checks and assesses actions taken and timeframes for improving the Mantis program."
Date:
February 18, 2005
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Aviation and the Environment: Aviation's Effects on the Global Atmosphere Are Potentially Significant and Expected to Grow
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on the potential environmental effects of aviation emissions, focusing on what: (1) is currently known about aviation's contribution to global warming and how aviation emissions, both domestic and global, compare with emissions from other sources; and (2) options are available for reducing aviation emissions."
Date:
February 18, 2000
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Mass Transit: Information on the Federal Role in Funding the Washington Metropolitan Area Transit Authority
Testimony issued by the Government Accountability Office with an abstract that begins "In recent years, the Washington Metropolitan Area Transit Authority (WMATA) has faced serious financial and budgetary problems as well as continuing challenges related to the safety and reliability of its transit services. At the same time, ridership is at an alltime high, and WMATA continues to provide critical services and considerable benefits to the Washington region's economic well-being and to the federal government. This statement is based on preliminary results of our work on WMATA that GAO is performing at the request of the Chairman, House Committee on Government Reform, as well as on GAO's previous review of WMATA and other studies of WMATA's financial condition. It discusses (1) the extent to which WMATA relied on federal funding to build its Metrorail subway system and the federal government's rationale for providing that funding, (2) the extent to which WMATA has relied on other federal funding for capital improvements in recent years, and (3) the current funding challenges that WMATA faces and options that have been proposed to address those challenges."
Date:
February 18, 2005
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Accrual Budgeting: Experiences of Other Nations and Implications for the United States
A chapter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed other countries' experiences in accrual budgeting, focusing on: (1) countries' reasons for shifting to accrual budgeting; (2) the ways other countries are using accrual-based information in the budget; (3) the implications of accrual budgeting for decision-making; (4) the key implementation challenges (technical and political) associated with the use of accrual budgeting; and (5) issues raised by these countries' experiences that may be informative to the United States."
Date:
February 18, 2000
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
HUD Rental Assistance: Progress and Challenges in Measuring and Reducing Improper Rent Subsidies
A chapter report issued by the Government Accountability Office with an abstract that begins "In fiscal year 2003, the Department of Housing and Urban Development (HUD) paid about $28 billion to help some 5 million low-income tenants afford decent rental housing. HUD has three major programs: the Housing Choice Voucher (voucher) and public housing programs, administered by public housing agencies; and project-based Section 8, administered by private property owners. As they are in every year, some payments were too high or too low, for several reasons. To assess the magnitude and reasons for these errors, HUD established the Rental Housing Integrity Improvement Project (RHIIP). In response to a congressional request, GAO examined the sources and magnitude of improper rent subsidy payments HUD has identified and the steps HUD is taking to address them, including efforts to simplify the process of determining rent subsidies."
Date:
February 18, 2005
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
[Letter from John Paul Batiste to Nancy Walkup Reynolds, February 18, 2000]
Photocopy of a letter from John Paul Batiste, executive director of the Texas Commission on the Arts, to Nancy Walkup Reynolds, North Texas Institute for Educators on the Visual Arts. In regards to the TCA awarding the University of North Texas, North Texas Institute for Educators on the Visual Arts, through the Education Mini-grants $1500 for Reynolds and Pam Stephens to attend and present work sessions at the National Art Education Association Conference. Attached to the letter are the mini-grant applications filled out by Nancy and Pam. The last page is a memo from Pam Stephens to Deborah Dobbins, letting Dobbins know that Stephens and Reynolds will be presenting six workshops at NAEA.
Date:
February 18, 2000
Creator:
Batiste, John Paul
Object Type:
Letter
System:
The UNT Digital Library
[Letter from John Paul Batiste to Nancy Walkup Reynolds, February 18, 2000]
Photocopy of a letter from John Paul Batiste, executive director of the Texas Commission on the Arts, to Nancy Walkup Reynolds, North Texas Institute for Educators on the Visual Arts. In regards to the TCA awarding the University of North Texas, North Texas Institute for Educators on the Visual Arts, through the Education Mini-grants $1500 for Reynolds and Pam Stephens to attend and present work sessions at the National Art Education Association Conference.
Date:
February 18, 2000
Creator:
Batiste, John Paul
Object Type:
Letter
System:
The UNT Digital Library
Simulating mixed-phase Arctic stratus clouds: sensitivity to ice initiation mechanisms
The importance of Arctic mixed-phase clouds on radiation and the Arctic climate is well known. However, the development of mixed-phase cloud parameterization for use in large scale models is limited by lack of both related observations and numerical studies using multidimensional models with advanced microphysics that provide the basis for understanding the relative importance of different microphysical processes that take place in mixed-phase clouds. To improve the representation of mixed-phase cloud processes in the GISS GCM we use the GISS single-column model coupled to a bin resolved microphysics (BRM) scheme that was specially designed to simulate mixed-phase clouds and aerosol-cloud interactions. Using this model with the microphysical measurements obtained from the DOE ARM Mixed-Phase Arctic Cloud Experiment (MPACE) campaign in October 2004 at the North Slope of Alaska, we investigate the effect of ice initiation processes and Bergeron-Findeisen process (BFP) on glaciation time and longevity of single-layer stratiform mixed-phase clouds. We focus on observations taken during 9th-10th October, which indicated the presence of a single-layer mixed-phase clouds. We performed several sets of 12-h simulations to examine model sensitivity to different ice initiation mechanisms and evaluate model output (hydrometeors concentrations, contents, effective radii, precipitation fluxes, and radar reflectivity) against measurements from …
Date:
February 18, 2008
Creator:
Sednev, Igor; Sednev, I.; Menon, S. & McFarquhar, G.
Object Type:
Article
System:
The UNT Digital Library
Enhancing the DNA Patent Database
Final Report on Award No. DE-FG0201ER63171 Principal Investigator: LeRoy B. Walters February 18, 2008 This project successfully completed its goal of surveying and reporting on the DNA patenting and licensing policies at 30 major U.S. academic institutions. The report of survey results was published in the January 2006 issue of Nature Biotechnology under the title “The Licensing of DNA Patents by US Academic Institutions: An Empirical Survey.” Lori Pressman was the lead author on this feature article. A PDF reprint of the article will be submitted to our Program Officer under separate cover. The project team has continued to update the DNA Patent Database on a weekly basis since the conclusion of the project. The database can be accessed at dnapatents.georgetown.edu. This database provides a valuable research tool for academic researchers, policymakers, and citizens. A report entitled Reaping the Benefits of Genomic and Proteomic Research: Intellectual Property Rights, Innovation, and Public Health was published in 2006 by the Committee on Intellectual Property Rights in Genomic and Protein Research and Innovation, Board on Science, Technology, and Economic Policy at the National Academies. The report was edited by Stephen A. Merrill and Anne-Marie Mazza. This report employed and then adapted the methodology …
Date:
February 18, 2008
Creator:
Walters, LeRoy B.
Object Type:
Report
System:
The UNT Digital Library
Electronic Structure and Transport in Magnetic Multilayers
ORNL assisted Seagate Recording Heads Operations in the development of CIPS pin Valves for application as read sensors in hard disk drives. Personnel at ORNL were W. H. Butler and Xiaoguang Zhang. Dr. Olle Heinonen from Seagate RHO also participated. ORNL provided codes and materials parameters that were used by Seagate to model CIP GMR in their heads. The objectives were to: (1) develop a linearized Boltzmann transport code for describing CIP GMR based on realistic models of the band structure and interfaces in materials in CIP spin valves in disk drive heads; (2) calculate the materials parameters needed as inputs to the Boltzmann code; and (3) transfer the technology to Seagate Recording Heads.
Date:
February 18, 2008
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
APPLICATION OF POLYURETHANE FOAM FOR IMPACT ABSORPTION AND THERMAL INSULATION FOR GENERAL PURPOSE RADIOACTIVE MATERIALS PACKAGINGS
Polyurethane foam has been employed in impact limiters for large radioactive materials packagings since the early 1980's. Its consistent crush response, controllable structural properties and excellent thermal insulating characteristics have made it attractive as replacement for the widely used cane fiberboard for smaller, drum size packagings. Accordingly, polyurethane foam was chosen for the overpack material for the 9977 and 9978 packagings. The study reported here was undertaken to provide data to support the analyses performed as part of the development of the 9977 and 9978, and compared property values reported in the literature with published property values and test results for foam specimens taken from a prototype 9977 packaging. The study confirmed that, polyurethane foam behaves in a predictable and consistent manner and fully satisfies the functional requirements for impact absorption and thermal insulation.
Date:
February 18, 2009
Creator:
Smith, A; Glenn Abramczyk, G; Paul Blanton, P; Steve Bellamy, S; William Daugherty, W & Sharon Williamson, S
Object Type:
Article
System:
The UNT Digital Library
Complex Hydride Compounds with Enhanced Hydrogen Storage Capacity
The United Technologies Research Center (UTRC), in collaboration with major partners Albemarle Corporation (Albemarle) and the Savannah River National Laboratory (SRNL), conducted research to discover new hydride materials for the storage of hydrogen having on-board reversibility and a target gravimetric capacity of ≥ 7.5 weight percent (wt %). When integrated into a system with a reasonable efficiency of 60% (mass of hydride / total mass), this target material would produce a system gravimetric capacity of ≥ 4.5 wt %, consistent with the DOE 2007 target. The approach established for the project combined first principles modeling (FPM - UTRC) with multiple synthesis methods: Solid State Processing (SSP - UTRC), Solution Based Processing (SBP - Albemarle) and Molten State Processing (MSP - SRNL). In the search for novel compounds, each of these methods has advantages and disadvantages; by combining them, the potential for success was increased. During the project, UTRC refined its FPM framework which includes ground state (0 Kelvin) structural determinations, elevated temperature thermodynamic predictions and thermodynamic / phase diagram calculations. This modeling was used both to precede synthesis in a virtual search for new compounds and after initial synthesis to examine reaction details and options for modifications including co-reactant additions. …
Date:
February 18, 2008
Creator:
Mosher, Daniel A.; Opalka, Susanne M.; Tang, Xia; Laube, Bruce L.; Brown, Ronald J.; Vanderspurt, Thomas H. et al.
Object Type:
Report
System:
The UNT Digital Library
Tunable plasmonic lattices of silver nanocrystals
Silver nanocrystals are ideal building blocks for plasmonicmaterials that exhibit a wide range of unique and potentially usefuloptical phenomena. Individual nanocrystals display distinct opticalscattering spectra and can be assembled into hierarchical structures thatcouple strongly to external electromagnetic fields. This coupling, whichis mediated by surface plasmons, depends on their shape and arrangement.Here we demonstrate the bottom-up assembly of polyhedral silvernanocrystals into macroscopic two-dimensional superlattices using theLangmuir-Blodgett technique. Our ability to control interparticlespacing, density, and packing symmetry allows for tunability of theoptical response over the entire visible range. This assembly strategyoffers a new, practical approach to making novel plasmonic materials forapplication in spectroscopic sensors, sub-wavelength optics, andintegrated devices that utilize field enhancement effects.
Date:
February 18, 2008
Creator:
Tao, Andrea; Sinsermsuksakul, Prasert & Yang, Peidong
Object Type:
Article
System:
The UNT Digital Library
Hydrogen from Biomass for Urban Transportation
The objective of this project was to develop a method, at the pilot scale, for the economical production of hydrogen from peanut shells. During the project period a pilot scale process, based on the bench scale process developed at NREL (National Renewable Energy Lab), was developed and successfully operated to produce hydrogen from peanut shells. The technoeconomic analysis of the process suggests that the production of hydrogen via this method is cost-competitive with conventional means of hydrogen production.
Date:
February 18, 2008
Creator:
Boone, William
Object Type:
Report
System:
The UNT Digital Library
Coordinateendonucleolytic 5' and 3' trimming of terminally blocked blunt DNA double-strand break ends by Artemis nuclease and DNA-dependent protein kinase
Previous work showed that, in the presence of DNA-PK, Artemis slowly trims 3'-phosphoglycolate-terminated blunt ends. To examine the trimming reaction in more detail, long internally labeled DNA substrates were treated with Artemis. In the absence of DNA-PK, Artemis catalyzed extensive 5' {yields} 3' exonucleolytic resection of double-stranded DNA. This resection required a 5'-phosphate but did not require ATP, and was accompanied by endonucleolytic cleavage of the resulting 3' overhang. In the presence of DNA-PK, Artemis-mediated trimming was more limited, was ATP-dependent, and did not require a 5'-phosphate. For a blunt end with either a 3'-phosphoglycolate or 3'-hydroxyl terminus, endonucleolytic trimming of 2-4 nucleotides from the 3'-terminal strand was accompanied by trimming of 6 nucleotides from the 5'-terminal strand. The results suggest that autophosphorylated DNA-PK suppresses the exonuclease activity of Artemis toward blunt-ended DNA, and promotes slow and limited endonucleolytic trimming of the 5'-terminal strand, resulting in short 3' overhangs that are trimmed endonucleolytically. Thus, Artemis and DNA-PK can convert terminally blocked DNA ends of diverse geometry and chemical structure to a form suitable for polymerase mediated patching and ligation, with minimal loss of terminal sequence. Such processing could account for the very small deletions often found at DNA double-strand break …
Date:
February 18, 2008
Creator:
Povirk, Lawrence; Yannone, Steven M.; Khan, Imran S.; Zhou, Rui-Zhe; Zhou, Tong; Valerie, Kristoffer et al.
Object Type:
Article
System:
The UNT Digital Library
Electronic Structure Calculations of an Oxygen Vacancy in KH2PO4
We present first-principles total-energy density-functional theory electronic structure calculations for the neutral and charge states of an oxygen vacancy in KH{sub 2}PO{sub 4} (KDP). Even though the overall DOS profiles for the defective KDP are quite similar to those of the perfect KDP, the oxygen vacancy in the neutral and +1 charge states induces defect states in the band gap. For the neutral oxygen vacancy, the gap states are occupied by two electrons. The difference between the integral of the total density of states (DOS) and the sum of the DOS projected on the atoms of 0.98 |e|, indicates that one of the two electrons resulting from the removal of the oxygen atom is trapped in the vacancy, while the other tends to delocalize in the neighboring atoms. For the +1 charge oxygen vacancy, the addition of the hole reduces the occupation of the filled gap-states in the neutral case from two to one electron and produces new empty states in the gap. The new empty gap states are very close to the highest occupied states, leading to a dramatic decrease of the band gap. The difference between the integral of the total DOS and the sum of the DOS …
Date:
February 18, 2005
Creator:
Liu, C S; Hou, C J; Kioussis, N; Demos, S & Radousky, H
Object Type:
Article
System:
The UNT Digital Library
Tunable nanowire nonlinear optical probe
One crucial challenge for subwavelength optics has been thedevelopment of a tunable source of coherent laser radiation for use inthe physical, information, and biological sciences that is stable at roomtemperature and physiological conditions. Current advanced near-fieldimaging techniques using fiber-optic scattering probes1,2 have alreadyachieved spatial resolution down to the 20-nm range. Recently reportedfar-field approaches for optical microscopy, including stimulatedemission depletion (STED)3, structured illumination4, and photoactivatedlocalization microscopy (PALM)5, have also enabled impressive,theoretically-unlimited spatial resolution of fluorescent biomolecularcomplexes. Previous work with laser tweezers6-8 has suggested the promiseof using optical traps to create novel spatial probes and sensors.Inorganic nanowires have diameters substantially below the wavelength ofvisible light and have unique electronic and optical properties9,10 thatmake them prime candidates for subwavelength laser and imagingtechnology. Here we report the development of an electrode-free,continuously-tunable coherent visible light source compatible withphysiological environments, from individual potassium niobate (KNbO3)nanowires. These wires exhibit efficient second harmonic generation(SHG), and act as frequency converters, allowing the local synthesis of awide range of colors via sum and difference frequency generation (SFG,DFG). We use this tunable nanometric light source to implement a novelform of subwavelength microscopy, in which an infrared (IR) laser is usedto optically trap and scan a nanowire over a sample, suggesting a …
Date:
February 18, 2008
Creator:
Nakayama, Yuri; Pauzauskie, Peter J.; Radenovic, Aleksandra; Onorato, Robert M.; Saykally, Richard J.; Liphardt, Jan et al.
Object Type:
Article
System:
The UNT Digital Library
Asymmetric Synthesis of (-)-Incarvillateine Employing an Intramolecular Alkylation via Rh-Catalyzed Olefinic C-H Bond Activation
An asymmetric total synthesis of (-)-incarvillateine, a natural product having potent analgesic properties, has been achieved in 11 steps and 15.4% overall yield. The key step is a rhodium-catalyzed intramolecular alkylation of an olefinic C-H bond to set two stereocenters. Additionally, this transformation produces an exocyclic, tetrasubstituted alkene through which the bicyclic piperidine moiety can readily be accessed.
Date:
February 18, 2008
Creator:
Tsai, Andy; Bergman, Robert & Ellman, Jonathan
Object Type:
Article
System:
The UNT Digital Library
Biofuel Feedstock Assessment for Selected Countries
Findings from biofuel feedstock production assessments and projections of future supply are presented and discussed. The report aims to improve capabilities to assess the degree to which imported biofuel could contribute to meeting future U.S. targets to reduce dependence on imported oil. The study scope was focused to meet time and resource requirements. A screening process identified Argentina, Brazil, Canada, China, Colombia, India, Mexico, and the Caribbean Basin Initiative (CBI) region for initial analysis, given their likely role in future feedstock supply relevant to U.S. markets. Supply curves for selected feedstocks in these countries are projected for 2012, 2017 and 2027. The supply functions, along with calculations to reflect estimated supplies available for export and/or biofuel production, were provided to DOE for use in a broader energy market allocation study. Potential cellulosic supplies from crop and forestry residues and perennials were also estimated for 2017 and 2027. The analysis identified capacity to potentially double or triple feedstock production by 2017 in some cases. A majority of supply growth is derived from increasing the area cultivated (especially sugarcane in Brazil). This is supplemented by improving yields and farming practices. Most future supplies of corn and wheat are projected to be allocated …
Date:
February 18, 2008
Creator:
Kline, K. L.; Oladosu, G. A.; Wolfe, A. K.; Perlack, R. D. & Dale, V. H.
Object Type:
Report
System:
The UNT Digital Library