The Americans with Disabilities Act (ADA): Statutory Language and Recent Issues (open access)

The Americans with Disabilities Act (ADA): Statutory Language and Recent Issues

This report consists of the Americans with disabilities act (ADA): statutory language and recent issues.
Date: March 22, 2012
Creator: Brougher, Cynthia
Object Type: Report
System: The UNT Digital Library
Atomistic Time-Domain Simulations of Light-Harvesting and Charge-Transfer Dynamics in Novel Nanoscale Materials for Solar Hydrogen Production. (open access)

Atomistic Time-Domain Simulations of Light-Harvesting and Charge-Transfer Dynamics in Novel Nanoscale Materials for Solar Hydrogen Production.

Funded by the DOE grant (i) we continued to study and analyze the atomistic detail of the electron transfer (ET) across the chromophore-TiO2 interface in Gratzel cell systems for solar hydrogen production. (ii) We extensively investigated the nature of photoexcited states and excited state dynamics in semiconductor quantum dots (QD) designed for photovoltaic applications. (iii) We continued a newly initiated research direction focusing on excited state properties and electron-phonon interactions in nanoscale carbon materials. Over the past year, the results of the DOE funded research were summarized in 3 review articles. 12 original manuscripts were written. The research results were reported in 28 invited talks at conferences and university seminars. 20 invitations were accepted for talks in the near future. 2 symposia at national and international meetings have being organized this year on topics closely related to the DOE funded project, and 2 more symposia have been planned for the near future. We summarized the insights into photoinduced dynamics of semiconductor QDs, obtained from our time-domain ab initio studies. QDs exhibit both molecular and bulk properties. Unlike either bulk or molecular materials, QD properties can be modified continuously by changing QD shape and size. However, the chemical and physical properties …
Date: March 22, 2012
Creator: Prezhdo, Oleg V.
Object Type: Text
System: The UNT Digital Library
The Berry Amendment: Requiring Defense Procurement to Come from Domestic Sources (open access)

The Berry Amendment: Requiring Defense Procurement to Come from Domestic Sources

This report examines the original intent and purpose of the Berry Amendment and legislative proposals to amend the application of domestic source restrictions, as well as potential options for Congress.
Date: March 22, 2012
Creator: Grasso, Valerie Bailey
Object Type: Report
System: The UNT Digital Library
The Challenge of Individual Income Tax Reform: An Economic Analysis of Tax Base Broadening (open access)

The Challenge of Individual Income Tax Reform: An Economic Analysis of Tax Base Broadening

Congressional interest in a major reform of the individual income tax that would broaden the base and use the additional tax revenues to lower rates and/or reduce the deficit has increased. This report discusses ways in which the tax base can be broadened, tax expenditures, and impediments to broadening the base/eliminating or reducing expenditures.
Date: March 22, 2012
Creator: Gravelle, Jane G. & Hungerford, Thomas L.
Object Type: Report
System: The UNT Digital Library
Compensating State and Local Governments for the Tax-Exempt Status of Federal Lands: What Is Fair and Consistent? (open access)

Compensating State and Local Governments for the Tax-Exempt Status of Federal Lands: What Is Fair and Consistent?

This report provides information about the Compensating State and Local Governments for the Tax-Exempt Status of Federal Lands .State and local governments provide a wide variety of services-education, social services etc.
Date: March 22, 2012
Creator: Gorte, Ross W. & Lynee, Corn M.
Object Type: Report
System: The UNT Digital Library
Defined Contribution Plans: Approaches in Other Countries Offer Beneficial Strategies in Several Areas (open access)

Defined Contribution Plans: Approaches in Other Countries Offer Beneficial Strategies in Several Areas

A letter report issued by the Government Accountability Office with an abstract that begins "In overseeing DC plans and service providers, regulatory agencies in the countries GAO reviewed use risk-based approaches to target practices deemed most likely to harm participants and to develop preventative measures. While the role of service providers varies, DC plans and service providers in the 4 countries GAO reviewed are overseen by multiple agencies—primarily a pensions regulator and a securities regulator. In each of these countries, the pensions regulator is the agency that regularly collects data on service provider fees, as well as other plan features, which are used to inform their oversight activities. In particular, in several of these countries, the pensions regulator uses these data as part of a risk-based approach to identify service provider practices that may harm participants, instead of relying only on a compliance-based approach. For example, in Chile, pensions agency officials evaluate key features of the DC system, such as the service providers’ management of the individual accounts and the composition and role of the board of directors of the service provider. In both Chile and Australia, agency officials said using a risk-based approach enables the pensions regulator to take …
Date: March 22, 2012
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
Department of Homeland Security: Preliminary Observations on DHS's Efforts to Improve Employee Morale (open access)

Department of Homeland Security: Preliminary Observations on DHS's Efforts to Improve Employee Morale

Testimony issued by the Government Accountability Office with an abstract that begins "Over time, federal surveys have consistently found that Department of Homeland Security (DHS) employees are less satisfied with their jobs than the government-wide average. In the 2004 Office of Personnel Management’s federal employee survey—a tool that measures employees’ perceptions of whether and to what extent conditions characterizing successful organizations are present in their agency—56 percent of DHS employees responded that they were satisfied with their jobs, compared to 68 percent government-wide. In subsequent years, the disparity continued—ranging from a difference of 8 percentage points in 2006 to a 4 percentage point difference in 2008, 2010, and 2011. In 2011, DHS’s percentage of positive responses was lower than the averages for the rest of the federal government. For example, slightly less than half of the DHS employees surveyed reported positive responses to the statement “My talents are used well in the workplace,” nearly 12 percentage points less than the rest of the federal government average. In two areas, DHS’s percentage of positive responses was nearly the same or higher than the rest of the federal government average. For example, DHS’s percentage of positive responses to the statement “Considering everything, …
Date: March 22, 2012
Creator: United States. Government Accountability Office.
Object Type: Text
System: The UNT Digital Library
Detection of volatile organic compounds using surface enhanced Raman scattering (open access)

Detection of volatile organic compounds using surface enhanced Raman scattering

The authors present the detection of volatile organic compounds directly in their vapor phase by surface-enhanced Raman scattering (SERS) substrates based on lithographically-defined two-dimensional rectangular array of nanopillars. The type of nanopillars is known as the tapered pillars. For the tapered pillars, SERS enhancement arises from the nanofocusing effect due to the sharp tip on top. SERS experiments were carried out on these substrates using various concentrations of toluene vapor. The results show that SERS signal from a toluene vapor concentration of ppm level can be achieved, and the toluene vapor can be detected within minutes of exposing the SERS substrate to the vapor. A simple adsorption model is developed which gives results matching the experimental data. The results also show promising potential for the use of these substrates in environmental monitoring of gases and vapors.
Date: March 22, 2012
Creator: Chang, A. S.; Maiti, A.; Ileri, N.; Bora, M.; Larson, C. C.; Britten, J. A. et al.
Object Type: Article
System: The UNT Digital Library
DOD Financial Management: The Army Faces Significant Challenges in Achieving Audit Readiness for Its Military Pay (open access)

DOD Financial Management: The Army Faces Significant Challenges in Achieving Audit Readiness for Its Military Pay

A letter report issued by the Government Accountability Office with an abstract that begins "The Army could not readily identify the population of Army military payroll accounts given its existing procedures and systems. The Army and DFAS-IN did not have an effective, repeatable process for identifying the population of active duty payroll records. For example, it took 3 months and repeated attempts before DFAS-IN could provide a population of service members who received active duty Army military pay in fiscal year 2010. Further, because the Army does not have an integrated military personnel and payroll system, it was necessary to compare the payroll file to active Army personnel records. However, the Defense Manpower Data Center (DMDC), DOD’s central repository for information on DOD-affiliated personnel, did not have an effective process for comparing military pay account files with military personnel files to identify a valid population of military payroll transactions. It took DMDC over 2 months and labor-intensive research to compare and reconcile the total number of fiscal year 2010 active duty payroll accounts to its database of personnel files. DOD’s Financial Improvement and Audit Readiness (FIAR) Guidance states that identifying the population of transactions is a key task essential to …
Date: March 22, 2012
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
DOD Financial Management: The Army Faces Significant Challenges in Achieving Audit Readiness for Its Military Pay (open access)

DOD Financial Management: The Army Faces Significant Challenges in Achieving Audit Readiness for Its Military Pay

Testimony issued by the Government Accountability Office with an abstract that begins "We found that the Army could not readily identify a complete population of Army payroll accounts for fiscal year 2010, given existing procedures and systems. The Army and DFAS-IN did not have an effective, repeatable process for identifying the population of active duty payroll accounts. In addition, the Defense Manpower Data Center (DMDC), DOD’s central source for personnel information, did not have an effective process for comparing military pay account files to military personnel files to identify a valid population of military payroll transactions. For example, it took 3 months and repeated attempts before DFAS-IN could provide a population of service members who received active duty Army military pay in fiscal year 2010. Similarly, it took DMDC over 2 months to compare the total number of fiscal year 2010 active duty payroll accounts to its database of personnel files. "Standards for Internal Control in the Federal Government" requires all transactions and other significant events to be clearly documented and the documentation readily available for examination. DOD’s "Financial Improvement and Audit Readiness (FIAR) Guidance" sets out key tasks essential to achieving audit readiness, including defining and identifying the population …
Date: March 22, 2012
Creator: United States. Government Accountability Office.
Object Type: Text
System: The UNT Digital Library
Estimating the Bias of Local Polynomial Approximations Using the Peano Kernel (open access)

Estimating the Bias of Local Polynomial Approximations Using the Peano Kernel

These presentation visuals define local polynomial approximations, give formulas for bias and random components of the error, and express bias error in terms of the Peano kernel. They further derive constants that give figures of merit, and show the figures of merit for 3 common weighting functions. The Peano kernel theorem yields estimates for the bias error for local-polynomial-approximation smoothing that are superior in several ways to the error estimates in the current literature.
Date: March 22, 2012
Creator: Blair, J., and Machorro, E.
Object Type: Article
System: The UNT Digital Library
Laboratory Directed Research and Development FY2011 Annual Report (open access)

Laboratory Directed Research and Development FY2011 Annual Report

A premier applied-science laboratory, Lawrence Livermore National Laboratory (LLNL) has earned the reputation as a leader in providing science and technology solutions to the most pressing national and global security problems. The LDRD Program, established by Congress at all DOE national laboratories in 1991, is LLNL's most important single resource for fostering excellent science and technology for today's needs and tomorrow's challenges. The LDRD internally directed research and development funding at LLNL enables high-risk, potentially high-payoff projects at the forefront of science and technology. The LDRD Program at Livermore serves to: (1) Support the Laboratory's missions, strategic plan, and foundational science; (2) Maintain the Laboratory's science and technology vitality; (3) Promote recruiting and retention; (4) Pursue collaborations; (5) Generate intellectual property; and (6) Strengthen the U.S. economy. Myriad LDRD projects over the years have made important contributions to every facet of the Laboratory's mission and strategic plan, including its commitment to nuclear, global, and energy and environmental security, as well as cutting-edge science and technology and engineering in high-energy-density matter, high-performance computing and simulation, materials and chemistry at the extremes, information systems, measurements and experimental science, and energy manipulation. A summary of each project was submitted by the principal investigator. …
Date: March 22, 2012
Creator: Craig, W; Sketchley, J & Kotta, P
Object Type: Report
System: The UNT Digital Library
Micro-Analysis of Actinide Minerals for Nuclear Forensics and Treaty Verification (open access)

Micro-Analysis of Actinide Minerals for Nuclear Forensics and Treaty Verification

Micro-Raman spectroscopy has been demonstrated to be a viable tool for nondestructive determination of the crystal phase of relevant minerals. Collecting spectra on particles down to 5 microns in size was completed. Some minerals studied were weak scatterers and were better studied with the other techniques. A decent graphical software package should easily be able to compare collected spectra to a spectral library as well as subtract out matrix vibration peaks. Due to the success and unequivocal determination of the most common mineral false positive (zircon), it is clear that Raman has a future for complementary, rapid determination of unknown particulate samples containing actinides.
Date: March 22, 2012
Creator: M. Morey, M. Manard, R. Russo, G. Havrilla
Object Type: Article
System: The UNT Digital Library
Motor Carrier Safety: New Applicant Reviews Should Expand to Identify Freight Carriers Evading Detection (open access)

Motor Carrier Safety: New Applicant Reviews Should Expand to Identify Freight Carriers Evading Detection

A letter report issued by the Government Accountability Office with an abstract that begins "FMCSA does not determine the total number of chameleon carriers within the motor carrier industry. Such a determination would require FMCSA to investigate each of the tens of thousands of new applicants that register annually and then complete a legal process for some of these suspected chameleon carriers, an effort for which FMCSA does not have sufficient resources. Rather, FMCSA’s attempt to identify chameleon carriers among new applicants, referred to as the vetting program, is limited to bus companies (passenger carriers) and movers (household goods carriers). These two relatively small groups, representing only 2 percent of all new applicants in 2010, were selected because they present consumer protection and relatively high safety risks. Through the vetting program, FMCSA conducts electronic matching of applicant registration data against data on existing carriers and investigates each application from these two small groups, but does not determine whether all other new applicants, including freight carriers, may be attempting to assume a new identity. Federal internal control standards direct agencies to assess the risks they face to determine the most effective allocation of federal resources, including how best to distribute resources …
Date: March 22, 2012
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
Pipeline Safety: Collecting Data and Sharing Information on Federally Unregulated Gathering Pipelines Could Help Enhance Safety (open access)

Pipeline Safety: Collecting Data and Sharing Information on Federally Unregulated Gathering Pipelines Could Help Enhance Safety

A letter report issued by the Government Accountability Office with an abstract that begins "While the safety risks of onshore gathering pipelines that are not regulated by PHMSA are generally considered to be lower than for other types of pipelines, PHMSA does not collect comprehensive data to identify the safety risks of unregulated gathering pipelines. In response to a GAO survey, state pipeline safety agencies cited construction quality, maintenance practices, unknown or uncertain locations, and limited or no information on pipeline integrity as among the highest risks for federally unregulated pipelines. Without data on these risk factors, pipeline safety officials are unable to assess and manage safety risks associated with these pipelines. Furthermore, changes in pipeline operational environments cited in response to GAO’s survey and by industry officials could also increase safety risks for federally unregulated gathering pipelines. Specifically, land-use changes are resulting in development encroaching on existing pipelines and the increased extraction of oil and natural gas from shale deposits is resulting in the development of new gathering pipelines, some of which are larger in diameter and operate at higher pressure than older pipelines. PHMSA is considering collecting data on federally unregulated gathering pipelines, but the agency’s plans are …
Date: March 22, 2012
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
Recovery Act: SeaMicro Volume Server Power Reduction Research Development (open access)

Recovery Act: SeaMicro Volume Server Power Reduction Research Development

Cloud data centers are projected to be the fastest growing segment of the server market through 2015, according to IDC. Increasingly people and businesses rely on the Cloud to deliver digital content quickly and efficiently. Recovery Act funding from the Department of Energy has helped SeaMicro's technologies enhance the total cost of operation, performance and energy efficiency in large data center and Cloud environments. SeaMicro's innovative supercomputer fabric connects thousands of processor cores, memory, storage and input/output traffic. The company's fabric supports multiple processor instruction sets. Current systems featuring SeaMicro technology typically use one quarter the power and take one sixth the space of traditional servers with the same compute performance, yet deliver up to 12 times the bandwidth per core. Mozilla and eHarmony are two customers successfully using SeaMicro's technology. Numerous non-public customers have been successfully using the SeaMicro product in test and production facilities. As a result of the Recovery Act funding from the U.S. Department of Energy, more than 50 direct jobs were created at SeaMicro. To date, they primarily have been high-value, engineering jobs. Hardware, software and manufacturing engineering positions have been created, as well as sales and sales engineering. The positions have allowed SeaMicro to …
Date: March 22, 2012
Creator: Lauterbach, Gary
Object Type: Report
System: The UNT Digital Library
Texas Attorney General Opinion: GA-0915 (open access)

Texas Attorney General Opinion: GA-0915

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Greg Abbott, regarding a legal question submitted for clarification: Whether a county clerk must allow the public to copy records with a sheet-feed scanner (RQ-0916-GA)
Date: March 22, 2012
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: GA-0916 (open access)

Texas Attorney General Opinion: GA-0916

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Greg Abbott, regarding a legal question submitted for clarification: Whether a county treasurer, county auditor, or a county Human Resources officer is responsible for the performance of various duties involving disbursement and endorsement (RQ-998-GA)
Date: March 22, 2012
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Theoretical Studies of Hydrogen Storage Alloys. (open access)

Theoretical Studies of Hydrogen Storage Alloys.

Theoretical calculations were carried out to search for lightweight alloys that can be used to reversibly store hydrogen in mobile applications, such as automobiles. Our primary focus was on magnesium based alloys. While MgH{sub 2} is in many respects a promising hydrogen storage material, there are two serious problems which need to be solved in order to make it useful: (i) the binding energy of the hydrogen atoms in the hydride is too large, causing the release temperature to be too high, and (ii) the diffusion of hydrogen through the hydride is so slow that loading of hydrogen into the metal takes much too long. In the first year of the project, we found that the addition of ca. 15% of aluminum decreases the binding energy to the hydrogen to the target value of 0.25 eV which corresponds to release of 1 bar hydrogen gas at 100 degrees C. Also, the addition of ca. 15% of transition metal atoms, such as Ti or V, reduces the formation energy of interstitial H-atoms making the diffusion of H-atoms through the hydride more than ten orders of magnitude faster at room temperature. In the second year of the project, several calculations of alloys …
Date: March 22, 2012
Creator: Jonsson, Hannes
Object Type: Text
System: The UNT Digital Library