Testimony issued by the Government Accountability Office with an abstract that begins "Environmental satellites provide data and imagery that are used by weather forecasters, climatologists, and the military to map and monitor changes in weather (including severe weather such as hurricanes), climate, the oceans, and the environment. Two current acquisitions are the $12.5 billion National Polar-orbiting Operational Environmental Satellite System (NPOESS) program--which is to replace two existing polar-orbiting environmental satellite systems--and the planned $7 billion Geostationary Operational Environmental Satellites-R (GOES-R) program, which is to replace the current series of satellites due to reach end of their useful lives in approximately 2012. GAO was asked to summarize its past work on the progress and challenges facing these key environmental satellite acquisitions."

Testimony issued by the Government Accountability Office with an abstract that begins "The Federal Motor Carrier Safety Administration (FMCSA) has the primary federal responsibility for reducing crashes involving large trucks and buses. FMCSA uses its "SafeStat" tool to select carriers for reviews for compliance with its safety regulations based on the carriers' crash rates and prior safety violations. FMCSA then conducts these compliance reviews and can place carriers out of service if they are found to be operating unsafely. This statement is based on a recent report (GAO-07-585) and other nearly completed work. GAO assessed (1) the extent to which FMCSA identifies carriers that subsequently have high crash rates, (2) how FMCSA ensures that its compliance reviews are conducted thoroughly and consistently, and (3) the extent to which FMCSA follows up with carriers with serious safety violations. GAO's work was based on a review of laws, program guidance, and analyses of data from 2004 through early 2006."

A letter report issued by the Government Accountability Office with an abstract that begins "A significantly greater proportion of African American children are in foster care than children of other races and ethnicities, according to HHS and other research. Given this situation, GAO was asked to analyze the (1) major factors influencing the proportion of African American children in foster care, (2) extent that states and localities have implemented promising strategies, and (3) ways in which federal policies may have influenced African American representation in foster care. GAO's methodologies included a nationwide survey; a review of research and federal policies; state site visits; analyses of child welfare data; and interviews with researchers, HHS officials, and other experts."

A letter report issued by the Government Accountability Office with an abstract that begins "Combatant commanders carrying out ongoing operations rank the need for intelligence, surveillance, and reconnaissance (ISR) capabilities as high on their priority lists. The Department of Defense (DOD) is investing in many ISR systems, including unmanned aircraft systems (UAS), to meet the growing demand for ISR assets to support the warfighter. GAO was asked to evaluate DOD's efforts to integrate UAS into ongoing operations while optimizing the use of all DOD ISR assets. Specifically, this report addresses the extent that (1) DOD has taken steps to facilitate the integration of UAS into combat operations, and (2) DOD's approach to allocating and tasking its ISR assets considers all available ISR capabilities, including those provided by UAS. GAO also reviewed the extent that DOD evaluates the performance of its ISR assets, including UAS, in meeting warfighters' needs. To perform this work, GAO analyzed data and guidance on the use of ISR assets, and interviewed DOD officials, including those supporting ongoing operations in Iraq and Afghanistan."

A letter report issued by the Government Accountability Office with an abstract that begins "While many factors influence workers' decisions to retire, Social Security, Medicare, and pension laws also play a role, offering incentives to retire earlier and later. Identifying these incentives and how workers respond can help policy makers address the demographic challenges facing the nation. GAO assessed (1) the incentives federal policies provide about when to retire, (2) recent retirement patterns and whether there is evidence that changes in Social Security requirements have resulted in later retirements, and (3) whether tax-favored private retiree health insurance and pension benefits influence when people retire. GAO analyzed retirement age laws and SSA data and conducted statistical analysis of Health and Retirement Study data. Under the Comptroller General's authority, GAO has prepared this report on its own initiative."

A statement of record issued by the Government Accountability Office with an abstract that begins "The federal inspectors general (IG) play a critical role in addressing mismanagement of scarce taxpayer dollars. In the coming years, as we enter a period of escalating deficits and increasingly limited resources, GAO believes that the greatest single source of savings will come from bold, decisive efforts to transform what government does and how it does business, and to hold it accountable for results. Therefore, it is important that an independent, objective, and reliable IG structure be in place to ensure adequate audit and investigative coverage of federal programs and operations. This statement offers GAO's views on (1) the principles of independence and how they apply to IG offices, (2) leveraging IG work as a part of overall federal oversight, (3) structural streamlining of IG offices for resource efficiencies, and (4) matters discussed in a GAO forum on IG issues. This statement draws on provisions of the IG Act, professional auditing standards, prior GAO reports and testimony, and information reported by the IGs."

This report provides background information on the political and economical situation in Estonia. The report discusses the U.S. - Estonia relations, and Estonia's foreign policy.

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This report discusses the state of judicial security in the United States and the legislation introduced in the 110th Congress that would enhance judicial security.

This report tracks current appropriations and related legislation for Title I of the Workforce Investment Act of 1998 (WIA) (P.L. 105-220). Following a brief summary of each WIA program, the report presents the status of legislative proposals contained in the Administration’s FY2007 budget request and compares WIA funding in the FY2006 appropriation, the FY2007 budget request, and the FY2007 House and Senate Appropriations Committee reports.

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This report provides background, discussing constitutional provisions allocating war powers between Congress and the President, and presenting a historical overview of relevant court cases.

This report discusses China’s Currency: A Summary of the Economic Issues.

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This report covers information on a new farm bill Congress is considering. The report compares and contrasts the House version and Senate version of the farms bills, and states that updates will be made as the 2007 farm bill progresses.

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Saint Francis University has assessed the Swallow Farm property located in Shade Township, Somerset County, Pennsylvania as a potential wind power development site. Saint Francis worked with McLean Energy Partners to have a 50-meter meteorological tower installed on the property in April 2004 and continues to conduct a meteorological assessment of the site. Results suggest a mean average wind speed at 80 meters of 17 mph with a net capacity factor of 31 - 33%. Approximate electricity generation capacity of the project is 10 megawatts. Also, the University used matching funds provided by the federal government to contract with ABR, Inc. to conduct radar studies of nocturnal migration of birds and bats during the migrations seasons in the Spring and Fall of 2005 with a mean nocturnal flight altitude of 402 meters with less than 5% of targets at altitudes of less than 125 meters. The mean nocturnal passage rate was 166 targets/km/h in the fall and 145 targets/km/h in the spring. Lastly, University faculty and students conducted a nesting bird study May - July 2006. Seventy-three (73) species of birds were observed with 65 determined to be breeding or potentially breeding species; this figure represents approximately 30% of the …

Rare earths and copper systems were studied using X-ray absorption spectroscopy (XAS) and resonant inelastic X-ray scattering (RIXS). The use of monochromased synchotron radiation and improved energy resolution for RIXS made possible to obtain valuable information on the electronic structure in 4f, 5f and 3d systems. Experimental results for rare-earths (Ho, Gd, Cm, U, Np, Pu) were analyzed by atomic multiplet theory based on the Hartree-Fock calculations. The inelastic scattering structures in RIXS spectra at 5d edge of actinides found to be sensitive to actinide oxidation states in different systems. Comparison of experimental and calculated Cm 5d RIXS spectra gave direct information about valency of the 248-curium isotope in oxide. Scientific understanding of processes that control chemical changes of radioactive species from spent fuel is improved by studying interactions of actinide ions (U, Np, Pu) with corroded iron surfaces. RIXS measurements at the actinide 5d edge found to be sensitive to actinide oxidation states in different systems. Comparison of experimental and calculated Cm 5d RIXS spectra gave direct information about valency of the 248 curium isotope in oxide. Scientific understanding of processes that control chemical changes of radioactive species from spent fuel is improved by studying interactions of actinide ions …

Rapid granular flows and particle-laden flows were studied in laboratory experiments, molecular dynamics simulations, and simulations of continuum equations. The research demonstrated that the inclusion of friction is crucial in realistic modeling of granular flows; hence extensive previous analyses and simulations by many researchers for frictionless particles must be reconsidered in the light of our work. We also made the first detailed comparison between experiment and the predictions of continuum theory for granular media (hydrodynamic equations). We found that shock waves easily form in granular flows since the speed of sound waves (pressure fluctuations) in a granular gas is small, typically 10 cm, while flow velocities are easily an order of magnitude larger. Our measurements on vertically oscillating granular layers led to the development of a novel technique for continuously separating particles of different sizes. Our study of craters formed by the impact of a projectile in a granular medium showed, surprisingly, that the time taken for a projectile to come to a rest in the granular layer is independent of the projectile’s impact energy. Another study supported by this grant examined a vertically oscillating layer of a mixture of cornstarch and water. The discovery of stable holes in the …

The objective of this project is to study the ultrafast carrier dynamics of in two types of semiconductor quantum dots: self-assembled quantum dots (SAQDs) and patterned quantum dots (PQDs) and to correlate these dynamics with the shape, size and material composition of the dots, thereby obtaining a fundamental scientific understanding of these nanoscale systems.

Thermal damage was applied to LX-17 at 190 C for several hours. The damaged LX-17 samples, after cooled down to room temperature, were characterized for their material properties (density, porosity, permeability, moduli), safety, and performance. Weight losses upon thermal exposure were insignificant (< 0.1% wt.). The damaged LX-17 samples expanded, resulting in a bulk density reduction of 4.3%. Subsequent detonation measurements (cylinder tests) were conducted on the thermally-damaged LX-17 samples. The results showed that the fractions of damaged LX-17 reacted were slightly lower than those of pristine LX-17. The thermally damaged LX-17 had a detonation velocity of 7.315 mm/{micro}s, lower than that (7.638 mm/{micro}s) of pristine LX-17. Detonation energy density for the damaged LX-17 was 5.08 kJ/cm{sup 3}, about 9.0% lower than the detonation energy density of 5.50 kJ/cm{sup 3} for the pristine LX-17. The break-out curves showed reaction zone lengths for pristine LX-17 and damaged LX-17 were similar but the damaged samples had ragged detonation fronts.