A letter report issued by the Government Accountability Office with an abstract that begins "The Centers for Medicare & Medicaid Services (CMS)--an agency within the Department of Health and Human Services (HHS)--and the Congress, through the Deficit Reduction Act of 2005 (DRA), recently acted to constrain spending on imaging services, one of the fastest growing set of services under Medicare Part B, which covers physician and other outpatient services. GAO was asked to provide information to help the Congress evaluate imaging services in Medicare. In this report, GAO provides information on (1) trends in Medicare spending on imaging services from 2000 through 2006, (2) the relationship between spending growth and the provision of imaging services in physicians' offices, and (3) imaging management practices used by private payers that may have lessons for Medicare. To do this work, GAO analyzed Medicare claims data from 2000 through 2006, interviewed private health care plans, and reviewed health services literature."

A letter report issued by the Government Accountability Office with an abstract that begins "Federal agencies are increasingly using electronic mail (e-mail) for essential communication. In doing so, they are potentially creating messages that have the status of federal records, which must be managed and preserved in accordance with the Federal Records Act. Under the act, both the National Archives and Records Administration (NARA) and federal agencies have responsibilities for managing federal records, including e-mail records. In view of the importance that e-mail plays in documenting government activities, GAO was asked, among other things, to review the extent to which NARA provides oversight of federal records management, describe selected agencies' processes for managing e-mail records, and assess these agencies' e-mail policies and key practices. To do so, GAO examined NARA guidance, regulations, and oversight activities, as well as e-mail policies at four agencies (of contrasting sizes and structures) and the practices of selected officials."

A letter report issued by the Government Accountability Office with an abstract that begins "Under the Medicare program, the Centers for Medicare & Medicaid Services (CMS) and its contractors paid over $400 billion in Medicare benefits in calendar year 2006. GAO was asked to determine if Medicare providers have unpaid federal taxes and, if so, to (1) determine the magnitude of such debts, (2) identify examples of Medicare providers that have engaged in abusive or potentially criminal activities, and (3) determine whether CMS prevents delinquent taxpayers from enrolling in Medicare or levies payments to pay taxes. To determine amount of unpaid taxes owed by Medicare providers, GAO compared claim payment data from CMS and tax debt data from the Internal Revenue Service (IRS). In addition, GAO reviewed policies, procedures, and regulations related to Medicare. GAO also performed additional investigative activities."

A letter report issued by the Government Accountability Office with an abstract that begins "The Federal and District of Columbia Government Real Property Act of 2006 (Public Law 109-396) mandated GAO's review of the property exchange between the District and the federal government. None of the conveyances had occurred by the beginning of GAO's audit phase. After consulting with the congressional committees specified in the law, GAO developed research questions that reflect an assessment of property exchanges and development progress to date. GAO's objectives were to determine (1) the status of the conveyances and transfers of the properties identified in the law; (2) what steps the District and the federal government have taken toward completing the conveyances, what factors have affected their completion, and what additional steps remain; (3)what preliminary development has occurred on the properties exchanged between the District and the federal government, and what are the current plans for use of these properties; and (4)what development challenges the District and federal government face going forward. GAO analyzed planning and property documents; conducted site visits; and interviewed senior officials from the District and the Department of the Interior (DOI) among others. DOI and the General Services Administration agreed with …

Correspondence issued by the Government Accountability Office with an abstract that begins "Since 2001, Congress has provided the Department of Defense (DOD) with hundreds of billions of dollars in supplemental and annual appropriations for military operations in support of the Global War on Terrorism (GWOT). DOD's reported annual obligations for GWOT have shown a steady increase from about $0.2 billion in fiscal year 2001 to about $139.8 billion in fiscal year 2007. To continue GWOT operations, the President requested $189.3 billion in appropriations for DOD in fiscal year 2008. As of May 2008, Congress has provided DOD with about $86.8 billion of this request, including $16.8 billion for Mine Resistant Ambush Protected vehicles. Congress has not finalized action on the remaining $102.5 billion. In addition, the President also requested about $66 billion in appropriations for DOD in fiscal year 2009 for GWOT, which was submitted along with DOD's annual budget request. The United States' commitments to GWOT will likely involve the continued investment of significant resources, requiring decision makers to consider difficult trade-offs as the nation faces an increasing long-range fiscal challenge. The magnitude of future costs will depend on several direct and indirect cost variables and, in some cases, …

A letter report issued by the Government Accountability Office with an abstract that begins "Potential terrorist attacks and the possibility of naturally occurring disease outbreaks have raised concerns about the "surge capacity" of the nation's health care systems to respond to mass casualty events. GAO identified four key components of preparing for medical surge: (1) increasing hospital capacity, (2) identifying alternate care sites, (3) registering medical volunteers, and (4) planning for altering established standards of care. The Department of Health and Human Services (HHS) is the primary agency for hospital preparedness, including medical surge. GAO was asked to examine (1) what assistance the federal government has provided to help states prepare for medical surge, (2) what states have done to prepare for medical surge, and (3) concerns states have identified related to medical surge. GAO reviewed documents from the 50 states and federal agencies. GAO also interviewed officials from a judgmental sample of 20 states and from federal agencies, as well as emergency preparedness experts."

A letter report issued by the Government Accountability Office with an abstract that begins "The Internal Revenue Service (IRS) estimated that $33 billion in income tax assessments was not paid in 2001. If not collected, annual unpaid taxes keep accumulating each year along with penalty and interest charges to create an inventory of "tax debts," which approached $300 billion at the end of fiscal year 2007. IRS has shelved or delayed collection of billions of dollars of this tax debt. Congress and others have questioned IRS's collection process's effectiveness. As requested, GAO is reporting on (1) the process IRS uses to collect unpaid tax debts; (2) trends in the unpaid tax debt inventory, collections, and other resolutions from fiscal years 2002 through 2007; and (3) the performance measures and goals available to assess how well the collection process works overall. To meet these objectives, GAO interviewed IRS officials and reviewed IRS's unpaid assessments database, documentation on the collection process and factors used in managing it, and IRS's highest-level collection measures."

A letter report issued by the Government Accountability Office with an abstract that begins "In 2006, a Los Alamos National Laboratory (LANL) contract employee unlawfully removed classified information from the laboratory. This was the latest in a series of high-profile security incidents at LANL spanning almost a decade. LANL conducts research on nuclear weapons and other national security areas for the National Nuclear Security Administration (NNSA). GAO was asked to (1) identify LANL's major programs and activities and how much they rely on classified resources; (2) identify initiatives LANL is taking to reduce and consolidate its classified resources and physical footprint and the extent to which these initiatives address earlier security concerns; and (3) determine whether its new management approaches will sustain security improvements over the long-term. To carry out its work, GAO analyzed LANL data; reviewed policies, plans, and budgets; and interviewed officials."

A letter report issued by the Government Accountability Office with an abstract that begins "In the Telecommunications Act of 1996 (1996 Act), the Congress said that consumers in "rural, insular, and high-cost areas" should have access to services and rates that are "reasonably comparable" to those in urban areas. To implement the 1996 Act, the Federal Communications Commission (FCC) modified and expanded the high-cost program. The program provides funding to some telecommunications carriers, facilitating lower telephone rates in rural areas. GAO was asked to review (1) the effect that the program structure has on the level of support and types of services in rural areas, (2) the extent to which FCC has developed performance goals and measures for the program, and (3) the extent to which FCC has implemented internal control mechanisms. GAO reviewed relevant documents; interviewed federal and state officials, industry participants, and experts; conducted 11 state site visits; and conducted a survey of state regulators, available online at GAO-08-662SP."

This note examines several Machine-Detector Interface (MDI) issues for the Compton polarimeters in the Beam Delivery System of the International Linear Collider (ILC), including (1) alignment tolerances, (2) impact of crossing angle and IR magnets on spin alignment, (3) Z-pole operation, and (4) costs and conventional facilities.

The United States Support Program (USSP) priority for containment and surveillance (US) focuses on maintaining or improving the reliability and cost-effectiveness of C/S systems for IAEA safeguards, expanding the number of systems that are unattended and remotely monitored, and developing verification methods that help streamline the on-site inspection process. Existing IAEA C/S systems have evolved to become complex, integrated systems, which may include active seals, nondestructive assay (NDA) instruments, video cameras, and other sensors. These systems operate autonomously. They send analytical data to IAEA headquarters where it can be reviewed. These systems present challenges to the goals of improved system performance, standardization, reliability, maintainability, documentation, and cost effectiveness. One critical lesson from past experiences is the need for cooperation and common objectives among the IAEA, the developer, and the facility operator, to create a successful, cost effective system. Recent USSP C/S activities include Rokkasho Reprocessing Plant safeguard systems, production of a new shift register, numerous vulnerability assessments of C/S systems, a conduit monitoring system which identifies tampering of IAEA conduit deployed in the field, fiber optic seal upgrades, unattended monitoring system software upgrades, next generation surveillance system which will upgrade existing camera systems, and support of the IAEA's development of …

The U.S. Department of Energy’s (DOE) commitment to assuring the health and safety of its workers includes the conduct of illness and injury surveillance activities that provide an early warning system to detect health problems among workers. The Illness and Injury Surveillance Program monitors illnesses and health conditions that result in an absence, occupational injuries and illnesses, and disabilities and deaths among current workers.

Berkeley Lab operates facilities where radionuclides are handled and stored. These facilities are subject to the U.S. Environmental Protection Agency (EPA) radioactive air emission regulations in Code of Federal Regulations (CFR) Title 40, Part 61, Subpart H (EPA 1989). The EPA regulates radionuclide emissions that may be released from stacks or vents on buildings where radionuclide production or use is authorized or that may be emitted as diffuse sources. In 2007, all Berkeley Lab sources were minor stack or building emissions sources of radionuclides (sources resulting in a potential dose of less than 0.1 mrem/yr [0.001 mSv/yr]), there were no diffuse emissions, and there were no unplanned emissions. Emissions from minor sources either were measured by sampling or monitoring or were calculated based on quantities received for use or produced during the year. Using measured and calculated emissions, and building-specific and common parameters, Laboratory personnel applied the EPA-approved computer code, CAP88-PC, Version 3.0, to calculate the effective dose equivalent to the maximally exposed individual (MEI). The effective dose equivalent from all sources at Berkeley Lab in 2007 is 1.2 x 10{sup -2} mrem/yr (1.2 x 10{sup -4} mSv/yr) to the MEI, well below the 10 mrem/yr (0.1 mSv/yr) EPA dose …

The U.S. Department of Energy’s (DOE) commitment to assuring the health and safety of its workers includes the conduct of illness and injury surveillance activities that provide an early warning system to detect health problems among workers. The Illness and Injury Surveillance Program monitors illnesses and health conditions that result in an absence, occupational injuries and illnesses, and disabilities and deaths among current workers.

The goal of this work is to fabricate model nanomaterials with different types of disorder and use atomic-scale characterization and macroscopic magnetization measurements to understand better how specific types of disorder affects macroscopic magnetic behavior. This information can be used to produce magnetic nanomaterials with specific properties for applications such as permanent magnets, soft magnetic material for motors and biomedical applications.

The LSST camera is a tightly packaged, hermetically-sealed system that is cantilevered into the main beam of the LSST telescope. It is comprised of three refractive lenses, on-board storage for five large filters, a high-precision shutter, and a cryostat that houses the 3.2 giga-pixel CCD focal plane along with its support electronics. The physically large optics and focal plane demand large structural elements to support them, but the overall size of the camera and its components must be minimized to reduce impact on the image stability. Also, focal plane and optics motions must be minimized to reduce systematic errors in image reconstruction. Design and analysis for the camera body and cryostat will be detailed.

We report X-ray imaging of the powerful FR II radio galaxy 3C 353 using the Chandra X-ray Observatory. 3C 353's two 4-inch wide and 2-feet long jets allow us to study in detail the internal structure of the large-scale relativistic outflows at both radio and X-ray photon energies with the sub-arcsecond spatial resolution provided by the VLA and Chandra instruments. In a 90 ks Chandra observation, we have detected X-ray emission from most radio structures in 3C 353, including the nucleus, the jet and the counterjet, the terminal jet regions (hotspots), and one radio lobe. We show that the detection of the X-ray emission associated with the radio knots and counterknots, which is most likely non-thermal in origin, puts several crucial constraints on the X-ray emission mechanisms in powerful large-scale jets of quasars and FR II sources. In particular, we show that this detection is inconsistent with the inverse-Compton model proposed in the literature, and instead implies a synchrotron origin of the X-ray jet photons. We also find that the width of the X-ray counterjet is possibly narrower than that measured in radio bands, that the radio-to-X-ray flux ratio decreases systematically downstream along the jets, and that there are substantial …

Substantial increases in the concentrations of the stronger of two Fe(III) complexing organic ligand classes measured during the mesoscale Fe enrichment studies IronEx II and SOIREE appeared to sharply curtailed Fe availability to diatoms and thus limited the efficiency of carbon sequestration to the deep. Detailed observations during IronEx II (equatorial Pacific Ocean) and SOIREE (Southern Ocean –Pacific sector) indicate that the diatoms began re-experiencing Fe stress even though dissolved Fe concentrations remained elevated in the patch. This surprising outcome likely is related to the observed increased concentrations of strong Fe(III)-complexing ligands in seawater. Preliminary findings from other studies indicate that diatoms may not readily obtain Fe from these chemical species whereas Fe bound by strong ligands appears to support growth of cyanobacteria and nanoflagellates. The difficulty in assessing the likelihood of these changes with in-situ mesoscale experiments is the extended monitoring period needed to capture the long-term trajectory of the carbon cycle. A more detailed understanding of Fe complexing ligand effects on long-term ecosystem structure and carbon cycling is essential to ascertain not only the effect of Fe enrichment on short-term carbon sequestration in the oceans, but also the potential effect of Fe enrichment in modifying ecosystem structure and …

Using visible and X-ray photoelectron spectroscopy we measured the work function of a Au(111) surface at a well-defined sub-monolayer coverage of Cs. For a Cs coverage producing a photoemission maximum with a He-Ne laser, the work function is 1.61 {+-} 0.08 eV consistent with previous assumptions used to analyze vibrationally promoted electron emission. A discussion of possible Cs layer structures is also presented.

The U.S. Support Program to IAEA Safeguards (USSP) priority of training and human resources is aimed at providing the Department of Safeguards with an appropriate mixture of regular staff and extrabudgetary experts who are qualified to meet the IAEA's technical needs and to provide personnel with appropriate instruction to improve the technical basis and specific skills needed to perform their job functions. The equipment and methods used in inspection activities are unique, complex, and evolving. New and experienced safeguards inspectors need timely and effective training to perform required tasks and to learn new skills prescribed by new safeguards policies or agreements. The role of the inspector has changed from that of strictly an accountant to include that of a detective. New safeguards procedures are being instituted, and therefore, experienced inspectors must be educated on these new procedures. The USSP also recognizes the need for training safeguards support staff, particularly those who maintain and service safeguards equipment (SGTS), and those who perform information collection and analysis (SGIM). The USSP is committed to supporting the IAEA with training to ensure the effectiveness of all staff members and will continue to offer its assistance in the development and delivery of basic, refresher, and …

A long-probe technique was utilized to record the expansion and retreat of the dynamic sheath around a spherical substrate immersed in pulsed cathode arc metal plasma. Positively biased, long cylindrical probes were placed on the side and downstream of a negatively pulsed biased stainless steel sphere of 1" (25.4 mm) diameter. The amplitude and width of the negative high voltage pulses (HVP) were 2 kV, 5 kV, 10 kV, and 2 mu s, 4 mu s, 10 mu s, respectively. The variation of the probe (electron) current during the HVP is a direct measure for the sheath expansion and retreat. Maximum sheath sizes were determined for the different parameters of the HVP. The expected rarefaction zone behind the biased sphere (wake) due to the fast plasma flow was clearly established and quantified.

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This report reviews the status of energy efficiency and renewable energy legislation introduced during the 110th Congress. Most action in the second session is focused on the FY2009 budget request and legislation that would extend or modify selected renewable energy and energy efficiency tax incentives.