Testimony issued by the Government Accountability Office with an abstract that begins "Recently, the administration submitted a proposal for reauthorizing the Federal Aviation Administration (FAA) and the excise taxes that fund most of its budget. FAA's current authorization expires in 6 months. The proposal calls for major changes to FAA's funding and budget structure that are intended to address concerns about the long-term revenue adequacy, equity, and efficiency of FAA's current funding structure and to provide a more stable, reliable basis for funding a new air traffic control system that FAA is developing (at an estimated cost of $15 billion to 22 billion through 2025) to meet forecasted increases in air travel demand. The proposal would introduce cost-based charges for commercial users of air traffic control services, eliminate many current taxes, substantially raise fuel taxes for general aviation users, charge commercial and general aviation users a fuel tax to pay primarily for airport capital improvements, modify FAA's budget accounts to align with specific FAA activities, and link the portion of FAA's budget that comes from the Treasury's General Fund with public benefits FAA provides. This statement offers GAO's observations on the proposed changes in FAA's (1) funding and (2) budget …

Testimony issued by the Government Accountability Office with an abstract that begins "The United States is the largest provider of food aid in the world, accounting for over half of all global food aid supplies intended to alleviate hunger. Since the 2002 reauthorization of the Farm Bill, Congress has appropriated an average of $2 billion per year for U.S. food aid programs, which delivered an average of 4 million metric tons of agricultural commodities per year. Despite growing demand for food aid, rising business and transportation costs have contributed to a 43-percent decline in average tonnages delivered over the last 5 years. For the largest U.S. food aid program, these costs represent approximately 65 percent of total food aid expenditures, highlighting the need to maximize the efficiency and effectiveness of food aid. To inform Congress as it reauthorizes the 2007 Farm Bill, GAO examined some key challenges to the (1) efficiency of delivery and (2) effective monitoring of U.S. food aid."

Testimony issued by the Government Accountability Office with an abstract that begins "The Committee sought GAO's views on the role GAO has played in assisting congressional oversight and the authorities and resources GAO needs to further improve its assistance to the Congress. Today's testimony discusses some of the ways that GAO has helped "set the table" for this Committee, the Congress, the executive branch, and the nation to engage in a constructive and informed dialogue about the challenges and opportunities our nation is facing in the 21st century. It also discusses the authority and resources GAO will need to address the critical oversight and other needs of the Congress."

Testimony issued by the Government Accountability Office with an abstract that begins "Advances in information technology make it easier than ever for the Department of Homeland Security (DHS) and other agencies to obtain and process information about citizens and residents in many ways and for many purposes. The demands of the war on terror also drive agencies to extract as much value as possible from the information available to them, adding to the potential for compromising privacy. Recognizing that securing the homeland and protecting the privacy rights of individuals are both important goals, the Congress has asked GAO to perform several reviews of DHS programs and their privacy implications over the past several years. For this hearing, GAO was asked to testify on key privacy challenges facing DHS. To address this issue, GAO identified and summarized issues raised in its previous reports on privacy and assessed recent governmentwide privacy guidance."

Testimony issued by the Government Accountability Office with an abstract that begins "Liquefied natural gas (LNG) is a supercooled liquid form of natural gas. U.S. LNG imports are projected to increase to about 17 percent of natural gas supplies by 2030, from about 3 percent today. To meet this increase, energy companies have submitted 32 applications for new terminals. If a terrorist attack on an LNG tanker caused a spill, potential hazards, such as fire, asphyxiation, and explosions, could result. The Department of Energy (DOE) recently funded a study to conduct small- and large-scale experiments to refine and validate models that calculate how heat from large LNG fires would affect the public. This testimony is based on GAO's recently released report, Maritime Security: Public Safety Consequences of a Terrorist Attack on a Tanker Carrying Liquefied Natural Gas Need Clarification (GAO-07-316). To prepare this report, GAO examined the results of six recent unclassified studies on the effects of an LNG spill and convened a panel of 19 experts to identify areas of agreement on the consequences of a terrorist attack on an LNG tanker."

A letter report issued by the Government Accountability Office with an abstract that begins "Through its Veterans Health Administration (VHA), the Department of Veterans Affairs (VA) operates one of the largest health care systems in the country. In 1999, GAO reported that better management of VA's large inventory of aged capital assets could result in savings that could be used to enhance health care services for veterans. In response, VA initiated a process known as Capital Asset Realignment for Enhanced Services (CARES). Through CARES, VA sought to enhance veteran care by the appropriate sizing, upgrading, and locating of VA facilities. GAO was asked to examine the CARES process. Specifically, GAO examined (1) how CARES contributes to VHA's capital planning process, (2) the extent to which the CARES process considered capital asset alignment alternatives, and (3) the extent to which VA has implemented CARES decisions and how this implementation has helped VA carry out its mission. To address these issues, we analyzed CARES documents, interviewed VA officials, and conducted six site visits, among other things."

A letter report issued by the Government Accountability Office with an abstract that begins "GAO has reported on limitations in the management of U.S. low-level radioactive waste (LLRW). LLRW ranges from very low-activity to higher-activity waste. To identify potential approaches to overcome these limitations, GAO was asked to examine the extent to which other countries have (1) LLRW inventory databases, (2) timely removal of higher-activity LLRW from waste generator sites, (3) disposition options for all LLRW, and (4) requirements that LLRW generators have financial reserves to cover waste disposition costs, as well as any other approaches that might improve U.S. LLRW management. GAO primarily relied on a survey of 18 countries representing leading LLRW generators to identify their management approaches and to compare them with U.S. survey results and with approaches suggested by LLRW generators, disposal operators, and regulators in the United States."

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This report provides brief summaries and background information for four types of tax-advantaged accounts for healthcare; it compares them with respect to eligibility, contribution limits, use of funds, and other characteristics for tax year 2007. It also includes a discussion of various healthcare-related issues such as equity.

This report provides a brief overview of the organization and operations of House and Senate committees.

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This report discusses the Context and Incident Summaries on Data Security Breaches. Personal data security breaches are being reported with increasing regularity. A law implemented in July 2003 had increased awareness of these data security breaches.

This report is a summary of Major Restrictions regarding Amendments on the House Floor.

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This report describes the development of a high-frequency ultrasonic measurement capability for application to the study of phase transitions at elevated pressure and temperature. We combined expertise in various aspects of static high-pressure technique with recent advances in wave propagation modeling, ultrasonic transducer development, electronic methods and broadband instrumentation to accomplish the goals of this project. The transduction and electronic systems have a demonstrated bandwidth of 400 MHz, allowing investigations of phenomena with characteristic times as short as 2.5 nS. A compact, pneumatically driven moissanite anvil cell was developed and constructed for this project. This device generates a high-pressure environment for mm dimension samples to pressures of 3 GPa. Ultrasonic measurements were conducted in the moissanite cell, an LLNL multi-anvil device and in a modified piston cylinder device. Measurements for water, and elemental tantalum, tin and cerium demonstrate the success of the methods. The {gamma}-{alpha} phase transition in cerium was clearly detected at {approx}0.7 GPa with 75 MHz longitudinal waves. These results have direct application to important problems in LLNL programs, as well as seismology and planetary science.

We present an analysis of inclusive {Omega}{sub c}{sup 0} baryon production and decays in 230.5 fb{sup -1} of data recorded with the BABAR detector at the PEP-II asymmetric-energy e{sup +}e{sup -} collider at the Stanford Linear Accelerator Center. {Omega}{sub c}{sup 0} baryons are reconstructed in four final states ({Omega}{sup -}{pi}{sup +}, {Omega}{sup -}{pi}{sup +}{pi}{sup 0}, {Omega}{sup -}{pi}{sup +}{pi}{sup +}{pi}{sup -}, {Xi}{sup -}K{sup -}{pi}{sup +}{pi}{sup +}) and the ratios of branching fractions for these final states are measured. We also measure the momentum spectrum of the {Omega}{sub c}{sup 0} baryons in the e{sup +}e{sup -} center-of-mass frame. From the spectrum, they observe {Omega}{sub c}{sup 0} production from B decays and in c{bar c} events, and extract the two rates of production.

A study of breakdown mechanism has been initiated at the Argonne Wakefield Accelerator (AWA). Breakdown may include several factors such as local field enhancement, explosive electron emission, Ohmic heating, tensile stress produced by electric field, and others. The AWA is building a dedicated facility to test various models for breakdown mechanisms and to determine the roles of different factors in the breakdown. We plan to trigger breakdown events with a high-powered laser at various wavelengths (IR to UV) to determine the role of explosive electron emission in the breakdown process. Another experimental idea follows from the recent work on a Schottky-enabled photoemission in an RF photoinjector [1] that allows us to determine in situ the field enhancement factor on a cathode surface. Monitoring the field enhancement factor before and after the breakdown can shed some light on a number of observations such as the crater formation process.

The Linac Coherent Light Source (LCLS) is a SASE x-ray Free-Electron Laser (FEL) based on the final kilometer of the Stanford Linear Accelerator. One of the most critical diagnostic devices is the bunch length monitor (BLM), which is to be installed right after each compressor utilizing coherent radiation from the last bending magnet. We describe the components and the optical layout of such a BLM. Based on the setup geometry, we discuss some issues about the coherent radiation signal.

In this paper, we present the recent results of our research on the ultra-high power fast silicon RF switch and its application on active X-Band RF pulse compression systems. This switch is composed of a group of PIN diodes on a high purity silicon wafer and has achieved a switching time of 300ns. The wafer is inserted into a cylindrical waveguide operating in the TE01 mode. Switching is performed by injecting carriers into the bulk silicon through a high current pulse. The RF energy is stored in a room-temperature, high-Q 375 ns delay line; it is then extracted out of the line in a short time using the switch. The pulse compression system has achieved a gain of 8, which is the ratio between output and input power.

We continue to investigate properties of the worldsheet conformal field theories (CFTs) which are conjectured to be dual to free large N gauge theories, using the mapping of Feynman diagrams to the worldsheet suggested in [1]. The modular invariance of these CFTs is shown to be built into the formalism. We show that correlation functions in these CFTs which are localized on subspaces of the moduli space may be interpreted as delta-function distributions, and that this can be consistent with a local worldsheet description given some constraints on the operator product expansion coefficients. We illustrate these features by a detailed analysis of a specific four-point function diagram. To reliably compute this correlator we use a novel perturbation scheme which involves an expansion in the large dimension of some operators.

This Report is Description of Sensory Transduction in Microorganisms at Gordon Conference.