Correspondence issued by the Government Accountability Office with an abstract that begins "The United States controls the export of high performance computers for national security and foreign policy reasons. High performance computers have both civilian and military applications and operate at or above a defined performance threshold (which was formerly measured in millions of theoretical operations per second [MTOPS], but is now measured in Weighted TeraFlops [WT]). The U.S. export control policy currently organizes countries into "tiers," with tier 3 representing a higher level of concern related to U.S. national security interests than tiers 1 and 2. A license is required to export computers above a specific performance level to countries such as China, India, Israel, Pakistan, and Russia. Policy objectives of U.S. computer export controls are to (1) limit the acquisition of highest-end, high performance computer systems by potential adversaries and countries of proliferation concern and (2) ensure that U.S. domestic industries supporting important national security computer capabilities can compete in markets where there are limited security or proliferation risks. Over the last few years, the effectiveness of U.S. export controls in meeting these policy objectives has been challenged by market and technological changes in the computer and microprocessor …

A letter report issued by the Government Accountability Office with an abstract that begins "In recent years, the Congress has become increasingly concerned that federal agencies are misclassifying information. Classified information is material containing national defense or foreign policy information determined by the U.S. government to require protection for reasons of national security. GAO was asked to assess the extent to which (1) DOE's training, guidance, and oversight ensure that information is classified and declassified according to established criteria and (2) DOE has found documents to be misclassified."

A letter report issued by the Government Accountability Office with an abstract that begins "Since 2001, Congress and federal agencies, including the Forest Service and Department of the Interior's Bureau of Land Management (BLM), have recognized the importance of rehabilitating and restoring lands unlikely to recover on their own after wildland fires. However, while funding has increased for fire prevention, suppression, and first-year emergency stabilization, it has decreased for rehabilitation (work up to 3 years after fires) and restoration (work beyond the first 3 years). GAO was asked (1) how the Forest Service and BLM plan postfire rehabilitation and restoration projects, (2) how much needed rehabilitation and restoration work they have completed for recent wildland fires, and (3) what challenges the agencies face in addressing their needs."

A letter report issued by the Government Accountability Office with an abstract that begins "The Internet protocol (IP) provides the addressing mechanism that defines how and where information such as text, voice, music, and video move across interconnected networks. IP version 4 (IPv4), which is widely used today, may not be able to accommodate the increasing number of global users and devices that are connecting to the Internet. As a result, Internet version 6 (IPv6) was developed to increase the amount of available address space. In August 2005, the Office of Management and Budget (OMB) issued a memorandum specifying activities and time frames for federal agencies to transition to IPv6. GAO was asked to determine (1) the status of federal agencies' efforts to transition to IPv6; (2) what emerging applications are being planned or implemented that take advantage of IPv6 features; and (3) key challenges industry and government agencies face as they transition to the new protocol."

A letter report issued by the Government Accountability Office with an abstract that begins "Misclassification of national security information impedes effective information sharing, can provide adversaries with information to harm the United States and its allies, and incurs millions of dollars in avoidable administrative costs. As requested, GAO examined (1) whether the implementation of the Department of Defense's (DOD) information security management program, effectively minimizes the risk of misclassification; (2) the extent to which DOD personnel follow established procedures for classifying information, to include correctly marking classified information; (3) the reliability of DOD's annual estimate of its number of classification decisions; and (4) the likelihood of DOD's meeting automatic declassification deadlines."

A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Energy (DOE), the largest civilian contracting agency in the federal government, spends over 90 percent of its annual budget on contracts to operate its facilities and carry out its diverse missions. Federal law and regulations outline the steps DOE must follow in planning and carrying out the contract award process and emphasize the importance of awarding contracts in a timely manner. Several of DOE's recent contracts have taken much longer than anticipated to award. GAO was asked to determine (1) the extent to which DOE has experienced delays in awarding contracts and factors contributing to delays, (2) the impacts of any such delays, and (3) the extent to which DOE has taken steps to address the delays."

Correspondence issued by the Government Accountability Office with an abstract that begins "As of the end of March 2006, over 1.3 million U.S. military servicemembers had served or were serving in Operation Enduring Freedom (OEF) or Operation Iraqi Freedom (OIF). These servicemembers, including members of the reserves and National Guard, may be eligible to receive health care from the Department of Veterans Affairs (VA) while serving on active duty or upon separating from active duty. Although the Department of Defense (DOD) provides health care services to servicemembers under TRICARE, legislation passed by the Congress in May 1982 authorized VA to provide health care services to servicemembers in time of war or national emergency, when DOD may have insufficient resources to care for casualties. Through December 16, 2005, DOD had arranged for 193 active duty servicemembers with serious injuries--traumatic brain injuries and other complex trauma, such as missing limbs--to receive medical and rehabilitative care at VA polytrauma rehabilitation centers (PRC). In addition, about 30 percent (over 144,000) of the servicemembers who had separated from active duty following service in OEF or OIF have sought VA health care, including over 4,000 who received inpatient care at VA medical facilities. In September 2005, …

Correspondence issued by the Government Accountability Office with an abstract that begins "As a part of Congress's continuing efforts to oversee the activities of the nonprofit sector, it asked us to review executive compensation issues at selected private, nonprofit hospital systems to gain an understanding of the policies and practices related to the salaries, benefits, travel, gifts, and entertainment expenses paid by these hospital systems. Our study's key questions were as follows: (1) What corporate governance structure do selected hospital systems report as having in place over executive compensation? (2) What is the basis for the compensation and benefits earned by, awarded to, or paid to the executives as reported by selected hospital systems? (3) What internal controls do selected hospital systems report as having in place over the approval, payment, and monitoring of executive travel and entertainment expenses, gifts, and other perquisites? On June 5, 2006, we briefed Congressional staff on the results of our work. This report transmits the briefing provided to Congressional staff, as amended to reflect some additional observations."

A letter report issued by the Government Accountability Office with an abstract that begins "While at an all-time high level, homeownership remains out of reach for many Americans, especially low-income families and minorities. In 2003, Pub. L. No. 108-186 created the American Dream Downpayment Initiative (ADDI) to help low-income, first-time homebuyers cover the up-front costs of buying a home (up to the greater of $10,000 or 6 percent of the purchase price) and authorized funding through fiscal year 2007. The Department of Housing and Urban Development (HUD) allocates ADDI funds to over 400 jurisdictions (e.g., states, cities, and counties). Pub. L. No. 108-86 directed GAO to perform a state-by-state analysis of ADDI's impact. This report discusses (1) HUD-reported information on ADDI expenditures and assisted households, and the limitations on the quality of these data and (2) the views of officials from selected jurisdictions on factors that affected their ability to use their funds and on the program's impact."

A letter report issued by the Government Accountability Office with an abstract that begins "In response to 2 bombings of U.S. embassies in Africa in 1998, the Department of State embarked on a $21 billion program to replace 201 insecure and dilapidated diplomatic facilities. In November 2004, GAO reported that State's Bureau of Overseas Buildings Operations (OBO), which manages the construction program, had implemented reforms to its planning, design, construction, and funding processes designed to expedite the construction process and prevent cost overruns that were common to previous State diplomatic construction programs. This report updates GAO's earlier report, by discussing OBO's completion rates and costs for embassy construction projects and the impact the reforms and other factors have on completion rates. It also discusses the changes in the costs for operating and maintaining these new facilities."

A letter report issued by the Government Accountability Office with an abstract that begins "In 2001, the administration identified the rightsizing of embassies and consulates as one of the President's management priorities. Rightsizing initiatives include: aligning staff overseas with foreign policy priorities and security and other constraints; demonstrating results by moving administrative functions from posts to regional or central locations; and eliminating duplicative functions at posts. This report (1) discusses the size and recent trends in the U.S. government overseas presence, (2) assesses the congressionally mandated Office of Rightsizing's progress in managing the U.S. government's overseas rightsizing efforts, and (3) assesses the process and outcomes of the legislatively mandated rightsizing reviews of overseas posts."

A letter report issued by the Government Accountability Office with an abstract that begins "The 2006 Winter Games in Turin, Italy, were the second Olympic Games to take place overseas since September 11, 2001. The United States worked with Italy to ensure the security of U.S. citizens, and it expects to continue such support for future Games, including the 2008 Games in Beijing, China. GAO was asked to (1) discuss the U.S. approach for providing security support for the 2006 Winter Games and how such efforts were coordinated, (2) identify the roles of U.S. agencies in providing security support for the Games and how they financed their activities, (3) review lessons learned in providing security support and the application of prior lessons learned, and (4) identify U.S. efforts under way for providing security support to the 2008 Beijing Games."

Correspondence issued by the Government Accountability Office with an abstract that begins "TRICARE is the Department of Defense's (DOD) health care system for active duty and retired uniformed service members and their families. TRICARE consists of four separate programs. Three of these programs--TRICARE Prime, a managed care option; TRICARE Extra, a preferred provider option; and TRICARE Standard, a fee for service option--cover active duty personnel, their dependents, and retirees under age 65. Prior to 2001, TRICARE beneficiaries would lose their TRICARE coverage when they reached age 65, and Medicare--the federal health insurance program that provides medical benefits to over 42 million elderly and disabled Americans--would become their primary health insurer. However, in 2001, the Congress expanded TRICARE by establishing a fourth program, known as TRICARE for Life (TFL). TFL provides supplementary health care coverage for TRICARE beneficiaries who are entitled to Medicare Part A, and enrolled in Part B. It pays for many services that Medicare only partially covers. While TRICARE beneficiaries do not have to pay for their TFL coverage, they are required to pay premiums for Medicare Part B. Section 625 of the Medicare Prescription Drug, Improvement, and Modernization Act of 2003 (MMA) provided enrollment incentives to TRICARE …

A letter report issued by the Government Accountability Office with an abstract that begins "The Medicare Prescription Drug, Improvement, and Modernization Act of 2003 (MMA) established a voluntary outpatient prescription drug benefit, known as Medicare Part D. Private sponsors have contracted with the Centers for Medicare & Medicaid Services (CMS) to provide this benefit and are offering over 1,400 stand-alone prescription drug plans (PDP). Depending on where they live, beneficiaries typically have a choice of 40 to 50 PDPs, which vary in cost and coverage. MMA required each PDP sponsor to staff a toll-free call center, which serves as a key source of the information that beneficiaries need to make informed choices among PDPs. GAO examined (1) whether PDP sponsors provide prompt, courteous, and helpful service to Medicare beneficiaries and others and (2) the extent to which PDP sponsor call centers provide accurate and complete information to Medicare beneficiaries and other callers. To address these objectives, we made 900 calls to 10 of the largest PDP sponsor call centers during March 2006, posing one of five questions about their Part D plans during each call. We tracked the amount of time it took to reach a customer service representative (CSR), …

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CALPHAD assessment of the thermodynamic properties of a series of Pu-based alloys is briefly presented together with some results on the kinetics of phase formation and transformations in Pu-Ga alloys.

The final AIPM project report consists of six sections. Each section includes information on the original AIPM project and extension work on the high temperature design. The first section (1) provides an overview of the program and highlights the significant targets to meet at the end of the program. The next section (2) summarizes the significant technical accomplishments by the SEMIKRON AIPM team during the course of the project. Greater technical details are provided in a collection of all the quarterly reports which can be found in the appendix. Section three (3) presents some the more significant technical data collected from technology demonstrators. Section four (4) analyzes the manufacturing cost or economic aspects of producing 100,000 units/yr. Section five (5) describes the commercialization efforts of the AIPM technology into the automotive market. The last section (6) recommends follow on work that will build on the efforts and achievements of the AIPM program.

Gas hydrates are crystalline, ice-like compounds of gas and water molecules that are formed under certain thermodynamic conditions. Hydrate deposits occur naturally within ocean sediments just below the sea floor at temperatures and pressures existing below about 500 meters water depth. Gas hydrate is also stable in conjunction with the permafrost in the Arctic. Most marine gas hydrate is formed of microbially generated gas. It binds huge amounts of methane into the sediments. Estimates of the amounts of methane sequestered in gas hydrates worldwide are speculative and range from about 100,000 to 270,000,000 trillion cubic feet (modified from Kvenvolden, 1993). Gas hydrate is one of the fossil fuel resources that is yet untapped, but may play a major role in meeting the energy challenge of this century. In this project novel techniques were developed to form and dissociate methane hydrates in porous media, to measure acoustic properties and CT properties during hydrate dissociation in the presence of a porous medium. Hydrate depressurization experiments in cores were simulated with the use of TOUGHFx/HYDRATE simulator. Input/output software was developed to simulate variable pressure boundary condition and improve the ease of use of the simulator. A series of simulations needed to be run …

Tree ring studies indicate that, for the greater part of the last three decades, New Mexico has been relatively 'wet' compared to the long-term historical norm. However, during the last several years, New Mexico has experienced a severe drought. Some researchers are predicting a return of very dry weather over the next 30 to 40 years. Concern over the drought has spurred interest in evaluating the use of otherwise unusable saline waters to supplement current fresh water supplies for power plant operation and cooling and other uses. The U.S. Department of Energy's National Energy Technology Laboratory sponsored three related assessments of water supplies in the San Juan Basin area of the four-corner intersection of Utah, Colorado, Arizona, and New Mexico. These were (1) an assessment of using water produced with oil and gas as a supplemental supply for the San Juan Generating Station (SJGS); (2) a field evaluation of the wet-surface air cooling (WSAC) system at SJGS; and (3) the development of a ZeroNet systems analysis module and an application of the Watershed Risk Management Framework (WARMF) to evaluate a range of water shortage management plans. The study of the possible use of produced water at SJGS showed that produce …

The overall objective of this program was to develop a liquid disiccant-based flue gas dehydration process technology to reduce water consumption in coal-fired power plants. The specific objective of the program was to generate sufficient subscale test data and conceptual commercial power plant evaluations to assess process feasibility and merits for commercialization. Currently, coal-fired power plants require access to water sources outside the power plant for several aspects of their operation in addition to steam cycle condensation and process cooling needs. At the present time, there is no practiced method of extracting the usually abundant water found in the power plant stack gas. This project demonstrated the feasibility and merits of a liquid desiccant-based process that can efficiently and economically remove water vapor from the flue gas of fossil fuel-fired power plants to be recycled for in-plant use or exported for clean water conservation. After an extensive literature review, a survey of the available physical and chemical property information on desiccants in conjunction with a weighting scheme developed for this application, three desiccants were selected and tested in a bench-scale system at the Energy and Environmental Research Center (EERC). System performance at the bench scale aided in determining which desiccant …

The objective of the DOE-NETL Fischer-Tropsch (F-T) Production and Demonstration Program was to produce and evaluate F-T fuel derived from domestic natural gas. The project had two primary phases: (1) fuel production of ultra-clean diesel transportation fuels from domestic fossil resources; and (2) demonstration and performance testing of these fuels in engines. The project also included a well-to-wheels economic analysis and a feasibility study of small-footprint F-T plants (SFPs) for remote locations such as rural Alaska. During the fuel production phase, ICRC partnered and cost-shared with Syntroleum Corporation to complete the mechanical design, construction, and operation of a modular SFP that converts natural gas, via F-T and hydro-processing reactions, into hydrogensaturated diesel fuel. Construction of the Tulsa, Oklahoma plant started in August 2002 and culminated in the production of over 100,000 gallons of F-T diesel fuel (S-2) through 2004, specifically for this project. That fuel formed the basis of extensive demonstrations and evaluations that followed. The ultra-clean F-T fuels produced had virtually no sulfur (less than 1 ppm) and were of the highest quality in terms of ignition quality, saturation content, backend volatility, etc. Lubricity concerns were investigated to verify that commercially available lubricity additive treatment would be adequate to …

The Colony Project is developing operating system and runtime system technology to enable efficient general purpose environments on tens of thousands of processors. To accomplish this, we are investigating memory management techniques, fault management strategies, and parallel resource management schemes. Recent results show promising findings for scalable strategies based on processor virtualization, in-memory checkpointing, and parallel aware modifications to full featured operating systems.

This document lists experimental references added to Nuclear Science References (NSR) during the period April 1, 2006 to June 30, 2006. The first section lists keynumbers and keywords sorted by mass and nuclide. The second section lists all references, ordered by keynumber.

The evolution of our understanding of the behavior of oxide nanostructures depends heavily on the structural information obtained from a wide range of physical methods traditionally used in solid state physics, surface science and inorganic chemistry. In this chapter, we describe several techniques that are useful for the characterization of the structural properties of oxide nanostructures: X-ray diffraction (XRD) and scattering, X-ray absorption fine structure (XAFS), Raman spectroscopy, transmission electron microscopy (TEM), scanning tunneling microscopy (STM) and atomic force microscopy (AFM). The ultimate goal is to obtain information about the spatial arrangement of atoms in the nanostructures with precise interatomic distances and bond angles. This may not be possible for complex systems and one may get only partial information about the local geometry or morphology.