A letter report issued by the Government Accountability Office with an abstract that begins "To address the strain on the aviation system, the Federal Aviation Administration (FAA) has proposed transitioning to the Next Generation Air Transportation System (NextGen). To fund this system and to make its costs to users more equitable, the Administration has proposed fundamental changes in the way that FAA is funded. As part of the reauthorization, the Administration proposes major changes in the way that grants through the Airport Improvement Program (AIP) are funded and allocated to the 3,400 airports in the national airport system. In response, GAO was asked for an update on current funding levels for airport development and the sufficiency of those levels to meet planned development costs. This report comprises capital development estimates made by FAA and Airports Council International (ACI), a leading industry association; analyzes how much airports have received for capital development and if sustained, whether it can meet future planned development; and summarizes the effects of proposed changes in funding for airport development. Airport funding and planned development data are drawn from the best available sources and have been assessed for their reliability. The Department of Transportation agreed with the …

A letter report issued by the Government Accountability Office with an abstract that begins "In 2002, CMS contracted with Quality Improvement Organizations (QIO) to help nursing homes address quality problems such as pressure ulcers, a deficiency frequently identified during routine inspections conducted by state survey agencies. CMS awarded $117 million over a 3-year period to the QIOs to assist all homes and to work intensively with a subset of homes in each state. Homes' participation was voluntary. To evaluate QIO performance, CMS relied largely on changes in homes' quality measures (QM), data based on resident assessments routinely conducted by homes. GAO assessed QIO activities during the 3-year contract starting in 2002, focusing on (1) characteristics of homes assisted intensively, (2) types of assistance provided, and (3) effect of assistance on the quality of nursing home care. GAO conducted a Web-based survey of all 51 QIOs, visited QIOs and homes in five states, and interviewed experts on using QMs to evaluate QIOs."

A letter report issued by the Government Accountability Office with an abstract that begins "Under time-and-materials contracts, payments to contractors are made based on the number of labor hours billed at hourly rates and, if applicable, other direct costs. Because of the risk they pose to the government, their use is supposed to be limited to cases where no other contract type is suitable. GAO was asked to identify trends in the Department of Defense's (DOD) obligations under time-and-materials contracts; analyze what DOD is buying under these contracts; assess why DOD is using them and whether actions are being taken to ensure that they are used only when no other contract type is suitable; evaluate DOD's monitoring of contractor performance; and determine the differences between the labor rates prime contractors bill DOD and the rates in their subcontracts. GAO reviewed 82 time-and-materials contracts, agreements, and orders and examined prime contract and subcontract labor rates on 12 additional contracts or agreements."

A letter report issued by the Government Accountability Office with an abstract that begins "Over the last 25 years, pension coverage has shifted primarily from "traditional" defined benefit (DB) plans, in which workers accrue benefits based on years of service and earnings, toward defined contribution (DC) plans, in which participants accumulate retirement balances in individual accounts. DC plans provide greater portability of benefits, but shift the responsibility of saving for retirement from employers to employees. This report addresses the following issues: (1) What percentage of workers participate in DC plans, and how much have they saved in them? (2) How much are workers likely to have saved in DC plans over their careers and to what degree do key individual decisions and plan features affect plan saving? (3) What options have been recently proposed to increase DC plan coverage, participation, and savings? GAO analyzed data from the Federal Reserve Board's 2004 Survey of Consumer Finances (SCF), the latest available, utilized a computer simulation model to project DC plan balances at retirement, reviewed academic studies, and interviewed experts."

A letter report issued by the Government Accountability Office with an abstract that begins "The 2005 Base Realignment and Closure (BRAC) recommendation to establish fleet readiness centers was expected to yield more savings than any other of the 2005 BRAC recommendations. To achieve these savings the Navy plans to integrate civilian depot personnel to complete some repairs at intermediate maintenance departments to reduce aviation maintenance costs. This report, prepared under the Comptroller General authority to conduct evaluations on his own initiative, is one in a series of reports related to the 2005 BRAC recommendations. GAO's objectives were to (1) analyze the reasons for changes in costs and savings estimates since the recommendation was approved, and (2) identify challenges in implementing this BRAC recommendation. GAO analyzed Navy and BRAC Commission costs and savings estimates and interviewed officials at the Naval Air Systems Command and at three fleet readiness centers."

A letter report issued by the Government Accountability Office with an abstract that begins "The Emergency Management Assistance Compact (EMAC) is a collaborative arrangement among member states that provides a legal framework for requesting resources. Working alongside federal players, including the Federal Emergency Management Agency (FEMA) and the National Guard Bureau, EMAC members deployed an unprecedented level of assistance in response to hurricanes Katrina and Rita. Although EMAC played a critical role in our nation's response to these hurricanes, the magnitude of these events revealed limitations. GAO was asked to (1) examine how the use of EMAC has changed since its inception; (2) assess how well existing policies, procedures, and practices facilitate collaboration; and (3) evaluate the adequacy of the EMAC network's administrative capacity to achieve its mission. GAO examined documents and interviewed officials from 45 federal, state, and local agencies and offices."

A letter report issued by the Government Accountability Office with an abstract that begins "During Operation Iraqi Freedom, the Army and the Marine Corps experienced problems with the delivery of supplies to the warfighter. Such problems highlight long-standing weaknesses in the Department of Defense's (DOD) supply chain management. DOD has identified joint theater logistics as a key effort aimed at improving distribution and supply support. GAO was asked to examine DOD's efforts to develop and implement joint theater logistics. GAO assessed (1) the extent to which DOD's approach to managing joint theater logistics departmentwide encompasses sound management principles and (2) the progress DOD has made in implementing joint theater logistics initiatives. GAO reviewed DOD documents and interviewed officials from the Joint Staff, services, agencies, and geographic combatant commands."

A letter report issued by the Government Accountability Office with an abstract that begins "The Centers for Medicare & Medicaid Services (CMS) adjusts Medicare physician fees for geographic differences in the costs of operating a medical practice. CMS uses 89 physician payment localities among which fees are adjusted. Concerns have been raised that the boundaries of some payment localities do not accurately address variations in physicians' costs. GAO was asked to examine how CMS has revised the localities; the extent to which they accurately reflect variations in physicians' costs; and alternative approaches to constructing the localities. To do so, GAO reviewed selected Federal Register documents; compared data on the costs physicians incur in different areas with the Medicare geographic adjustment; and used the physician cost data to construct and evaluate alternative approaches."

A letter report issued by the Government Accountability Office with an abstract that begins "As of September 2006, nearly 1.8 million entities were recognized as tax exempt organizations by the Internal Revenue Service (IRS). As such, they do not have to pay federal income taxes. Exempt organizations are still required to remit amounts withheld from employees' wages for federal income tax, Social Security and Medicare, as well as other taxes. Previous GAO work identified numerous government contractors, Medicare providers, and charities participating in the Combined Federal Campaign (CFC) with billions in unpaid federal taxes. To follow up on the CFC work, the subcommittee requested that GAO determine whether and to what extent (1) exempt organizations have unpaid federal taxes, including payroll taxes; (2) selected case study organizations and their executives are involved in abusive or potentially criminal activity; and (3) exempt organizations with unpaid federal taxes received direct grants from certain federal agencies. GAO reviewed unpaid taxes and exempt organization data from IRS and selected 25 case studies for audit and investigation. GAO also reviewed data from 3 major grant disbursement systems. GAO referred all 25 cases to IRS for collection activity and criminal investigation, if warranted. In its oral …

A letter report issued by the Government Accountability Office with an abstract that begins "In February 2005, GAO reported that weaknesses in the Army's Active Duty Medical Extension (ADME) process caused injured and ill Army National Guard and Reserve (reserve component) soldiers to experience gaps in pay and benefits. During the course of GAO's previous work, the Army implemented the Medical Retention Processing (MRP) program in May 2004 and Community-Based Health Care Initiative (CBHCI) in March 2004. CBHCI allows reserve component soldiers on MRP orders to return home and receive medical care through a civilian health care provider. As directed by congressional mandate, GAO determined whether (1) MRP has resolved the pay issues previously identified with ADME and (2) the Army has the metrics it needs to determine whether it is effectively managing CBHCI program risks. GAO's scope did not include the medical, facilities, or disability ratings issues recently reported by the media at Walter Reed Army Medical Center."

A letter report issued by the Government Accountability Office with an abstract that begins "In recent years, the Federal Housing Administration (FHA) has experienced a sharp decline in market share. Also, the agency has estimated that, absent program changes, its Mutual Mortgage Insurance Fund (Fund) would require appropriations in 2008. To adapt to market changes, FHA has implemented new procedures and proposed the following major legislative changes: raising FHA's loan limits, allowing risk-based pricing, and lowering down-payment requirements. GAO was asked to report on (1) the likely program and budget impacts of FHA's modernization efforts; (2) the tools, resources, and risk management practices important to FHA's implementation of the legislative proposals, if passed; and (3) other options that FHA and Congress could consider to help FHA adapt to market changes. To address these objectives, GAO analyzed FHA and Home Mortgage Disclosure Act (HMDA) data and interviewed officials from FHA and other mortgage institutions."

A letter report issued by the Government Accountability Office with an abstract that begins "The Federal Housing Administration (FHA) historically has been an important participant in the mortgage market, which includes loans that carry government insurance or guarantees (such as FHA-insured mortgages) and those that do not (conventional mortgages). The conventional market comprises prime loans for the most creditworthy borrowers and subprime loans for borrowers with impaired credit. Reduced demand for FHA-insured mortgages--which are used primarily by borrowers who would have difficulty obtaining conventional prime loans--has raised questions about the agency's role in and ability to adapt to the mortgage market. This report discusses (1) trends in FHA's share of the market for home purchase mortgages from 1996 through 2005, and how they compared with the trends for other market segments; and (2) factors associated with the trends in FHA's market share and the implications of these trends for homebuyers and FHA. To address these objectives, GAO analyzed FHA and Home Mortgage Disclosure Act (HMDA) data and interviewed officials from FHA and other mortgage institutions."

A letter report issued by the Government Accountability Office with an abstract that begins "This is GAO's third report since the September 11 terrorist attacks that assesses progress that market participants and regulators have made to ensure the security and resiliency of our securities markets. This report examined (1) actions taken to improve the markets' capabilities to prevent and recover from attacks; (2) actions taken to improve disaster response and increase telecommunications resiliency; and (3) financial regulators' efforts to ensure market resiliency. GAO inspected physical and electronic security measures and business continuity capabilities using regulatory, government, and industry-established criteria and discussed improvement efforts with broker dealers, banks, regulators, telecommunications carriers, and trade associations."

A letter report issued by the Government Accountability Office with an abstract that begins "At annual meetings, shareholders of public corporations can vote on various issues (e.g., mergers and acquisitions) through a process called proxy voting. Institutional investors (e.g., mutual funds and pension funds) cast the majority of proxy votes due to their large stock holdings. In recent years, concerns have been raised about a group of about five firms that provide research and recommendations on proxy votes to their institutional investor clients. GAO was asked to report on (1) potential conflicts of interest that may exist with proxy advisory firms and the steps that the Securities and Exchange Commission (SEC) has taken to oversee these firms; (2) the factors that may impede or promote competition within the proxy advisory industry; and (3) institutional investors' use of the firms' services and the firms' potential influence on proxy vote outcomes. GAO reviewed SEC examinations of proxy advisory firms, spoke with industry professionals, and conducted structured interviews with 31 randomly selected institutional investors. GAO is not making any recommendations."

A letter report issued by the Government Accountability Office with an abstract that begins "Trade Adjustment Assistance (TAA) is the nation's primary program providing job training and other assistance to manufacturing workers who lose their jobs due to international trade. For workers to receive TAA benefits, the Department of Labor (Labor) must certify that workers in a particular layoff have lost their jobs due to trade. Congress is considering allowing entire industries to be certified to facilitate access to assistance. GAO was asked to examine (1) trends in the current certification process, (2) the extent to which the proposed industry certification approach based on three petitions certified in 180 days would increase eligibility and identify potential challenges with this approach, and (3) the extent to which an approach based on trade remedies would increase eligibility and identify potential challenges. To address these questions, GAO analyzed data on TAA petitions, mass layoffs, trade, production, and trade remedies. GAO also interviewed Labor and ITC officials. GAO is not making recommendations at this time. Labor reviewed the report and did not provide comments. The ITC provided technical comments that have been incorporated as appropriate."

The estimated 200 gallons of sodium aluminosilicate scale (NAS) present in the 242-16H Evaporator pot prior to chemical cleaning was subjected to four batches of 1.5 M (9 wt%) nitric acid. Each batch was neutralized with 19 M (50 wt %) sodium hydroxide (caustic) before transfer to Tank 38. The chemical cleaning process began on November 20, 2006, and was terminated on December 10, 2006. An inspection of the pot's interior was performed and based on data gathered during that inspection; the current volume of scale in the pot is conservatively estimated to be 36.3 gallons, which is well below the 200 gallon limit specified in the Technical Safety Requirements. In addition, the performance during all aspects of cleaning agreed well with the flowsheet developed at the bench and pilot scale. There were some lessons learned during the cleaning outage and are detailed in appendices of this report.

This paper explores the feasibility of integrating energyefficiency program evaluation with the emerging need for the evaluationof programs from different "energy cultures" (demand response, renewableenergy, and climate change). The paper reviews key features andinformation needs of the energy cultures and critically reviews theopportunities and challenges associated with integrating these withenergy efficiency program evaluation. There is a need to integrate thedifferent policy arenas where energy efficiency, demand response, andclimate change programs are developed, and there are positive signs thatthis integration is starting to occur.

This report describes the implementation of a Runge-Kuttaiterationboth for mixture-averaged and for multicomponent diffusion withDufourand Soret effects in the low Mach number combustioncode.

The goal of the OSMOSE program is to measure the reactivity effect of minor actinides in known neutron spectra of interest to the Generation-IV reactor program and other programs and to create a database of these results for use as an international benchmark for the minor actinides. The results are then compared to calculation models to verify and validate integral absorption cross-sections for the minor actinides. The OSMOSE program includes all aspects of the experimental program--including the fabrication of fuel pellets and samples, the oscillation of the samples in the MINERVE reactor for the measurement of the reactivity effect, reactor physics modeling of the MINERVE reactor, and the data analysis and interpretation of the experimental results.

This is the final technical report for DOE Outstanding Junior Investigator (OJI) Award, 'Systematic Studies of Heavy Ion Collisions to Search for Quark-Gluon Plasma', grant DE-FG02-02ER41219, Principal Investigator (PI) Fuqiang Wang. The research under the grant was divided into two phases. The first concentrated on systematic studies of soft hadron production at low transverse momentum (p{sub T}), in particular the production of (anti-)baryon and strangeness in heavy ion collisions at RHIC energies. The second concentrated on measurements of di-hadron and multi-hadron jet-correlations and investigations of medium response to jets. The research was conducted at the Relativistic Heavy-Ion Collider (RHIC) at BNL with the Solenoidal Tracker At RHIC (STAR) experiment. The total grant is $214,000. The grant established a PC farm solely used for this research. The PC farm consists of 8 nodes with a total of 16 CPUs and 3 disk servers of total 2 TB shared storage. The current balance of the grant is $19,985. The positive balance is because an initial purchase of $22,600 for the PC farm came out of the PI's start-up fund due to the lateness of the award. The PC farm is an integral part of the Purdue Physics Department's computer cluster. The grant …

A comprehensive validation analysis has been performed that incorporates representativity of multiple parameters, experiments, reference designs, and adjustment of the nuclear data. The work involves a new representativity study among selected reactor designs and several experiments. Application, using existing experiments, to reference design like the ABTR and the SFR has demonstrated that it is possible to achieve a significant reduction of uncertainty on the main integral parameters of interest for their neutronic design. This is possible when the set of available experiments are relevant (i.e. representative of the reference designs), of good quality (i.e. of reduced uncertainty on experimental results), and consistent (i.e. not providing conflictive information).

There are a number of inaccuracies and data omissions with respect to gammas from neutron capture in the ENDF libraries used as field reference information and by modeling codes used in JTOT. As the use of Active Neutron interrogation methods is expanded, these shortfalls become more acute. A new, more accurate and complete evaluated experimental database of gamma rays (over 35,000 lines for 262 isotopes up to U so far) from thermal neutron capture has recently become available from the IAEA. To my knowledge, none of this new data has been installed in ENDF libraries and disseminated. I propose to upgrade libraries of {sup 184,186}W, {sup 56}Fe, {sup 204,206,207}Pb, {sup 104}Pd, and {sup 19}F the 1st year. This will involve collaboration with Richard Firestone at LBL in evaluating the data and installing it in the libraries. I will test them with the transport code MCNP5.

None

Remediation of uranium contamination in subsurface groundwater has become imperative as previous research and manufacturing involving radionuclides has led to contamination of groundwater sources. A possible in situ solution for sequestration of uranium is a bacterial process in which Shewanella oneidensis MR-1 reduces the soluble (and thus mobile) U(VI) oxidation state into the less mobile UO{sub 2} crystalline phase. However, the long term stability of the UO2 compound must be studied as oxidative conditions could return it back into the U(VI) state. Incorporation of other cations into the structure during manufacture of the UO{sub 2} could alter the dissolution behavior. A wide angle x-ray scattering (WAXS) experiment was performed to determine whether or not calcium, manganese, and magnesium are incorporated into this structure. If so, the substituted atoms would cause a contraction or expansion in the lattice because of their differing size, causing the lattice constant to be altered. After several stages of data reduction, the WAXS diffraction peaks were fit using the Le Bail fit method in order to determine the lattice constant. Initial results suggest that there may be incorporation of manganese into the UO{sub 2} structure due to a .03 Angstrom decrease in lattice constant, but more …