By analysing the pulse to pulse intensity fluctuations ofthe radiation emitted by a charge particle in the incoherent part of thespectrum, it is possible to extract information about the spatialdistribution of the beam. At the Advanced Light Source (ALS) of theLawrence Berkeley National Laboratory, we have developed and tested asimple scheme based on this principle that allows for the absolutemeasurement of the bunch length. A description of the method and theexperimental results are presented.

This report discusses the recent development in different programs administered by U.S. Department of Agriculture (USDA) with the goal to promote agricultural exports and to provide food aid. These programs include direct export subsidies, export market development, export credit guarantees, and foreign food aid.

We present a sample microstate for a black ring in four and five dimensional language. The microstate consists of a black string microstate with an additional D6-brane. We show that with an appropriate choice of parameters the piece involving the black string microstate falls down a long AdS throat, whose M-theory lift is AdS_3 x S2. We wrap a spinning dipole M2-brane on the S2 in the probe approximation. In IIA, this corresponds to a dielectric D2-brane carrying only D0-charge. We conjecture this is the firstapproximation to a cloud of D0-branes blowing up due to their non-abelian degrees of freedom and the Myers effect.

This report provides detailed background information on the Rural Utilities Service RUS broadband loan and grant programs,outlines criticisms of how the RUS broadband program has been implemented and discusses issues that congress might have asked to consider during the reauthorization process.

This report consists of changes to the SBA disaster loan program with proposal legislation in the 110th congress.

This report provides information about the Background, Oversight Issues, and Options for Congress of Coast Guard Deepwater Program.

The main purpose of this project was to advance the basic scientific understanding of colloid and colloid-facilitated Cs transport of radionuclides in the vadose zone. We focused our research on the hydrological and geochemical conditions beneath the leadking waste tanks at the USDOE Hanford reservation. Specific objectives were (1) to determine the lability and thermodynamic stability of colloidal materials, which form after reacting Hanford sediments with simulated Hanford Tank Waste, (2) to characterize the interactions between colloidal particles and contaminants, i.e., Cs and Eu, (3) to determine the potential of Hanford sediments for in situe mobilization of colloids, (4) to evaluate colloid-facilitated radionuclide transport through sediments under unsaturated flow, (5) to implement colloid-facilitated contaminant transport mechanisms into a transport model, and (6) to improve conceptual characterization of colloid-contaminant-soil interactions and colloid-facilitated transport for clean-up procedures and long-term risk assessment.

The positron and electron damping rings for the International Linear Collider will contain long straight sections consisting of twenty wiggler/quadrupole pairs. The wigglers will be based upon the CESR superconducting design. There are a number of challenges associated with the design of the wiggler straight vacuum system, in particular, the absorption of photon power generated by the wigglers. This paper will present the overall conceptual design of the wiggler straight vacuum system developed for the ILC Reference Design Report. Particular emphasis will be placed on photon power load calculations and the absorber design.

This study predicts new hybrid lighting applications for LEDs. In hybrid lighting, LEDs provide a low-energy 'standby' light level while another, more powerful, efficient light source provides light for occupied periods. Lighting controls will allow the two light sources to work together through an appropriate control strategy, typically motion-sensing. There are no technical barriers preventing the use of low through high CRI LEDs for standby lighting in many interior and exterior applications today. The total luminous efficacy of LED systems could be raised by increasing the electrical efficiency of LED drivers to the maximum practically achievable level (94%). This would increase system luminous efficacy by 20-25%. The expected market volumes for many types of LEDs should justify the evolution of new LED drivers that use highly efficient ICs and reduce parts count by means of ASICs. Reducing their electronics parts count by offloading discrete components onto integrated circuits (IC) will allow manufacturers to reduce the cost of LED driver electronics. LED luminaire manufacturers will increasingly integrate the LED driver and thermal management directly in the LED fixture. LED luminaires of the future will likely have no need for separable lamp and ballast because the equipment life of all the LED …

A letter report issued by the Government Accountability Office with an abstract that begins "Computer interconnectivity has produced enormous benefits but has also enabled criminal activity that exploits this interconnectivity for financial gain and other malicious purposes, such as Internet fraud, child exploitation, identity theft, and terrorism. Efforts to address cybercrime include activities associated with protecting networks and information, detecting criminal activity, investigating crime, and prosecuting criminals. GAO's objectives were to (1) determine the impact of cybercrime on our nation's economy and security; (2) describe key federal entities, as well as nonfederal and private sector entities, responsible for addressing cybercrime; and (3) determine challenges being faced in addressing cybercrime. To accomplish these objectives, GAO analyzed multiple reports, studies, and surveys and held interviews with public and private officials."

A letter report issued by the Government Accountability Office with an abstract that begins "Overseas deployments expose servicemembers to a number of potential risks to their health and well-being. However, since the mid-1990s, GAO has highlighted shortcomings with respect to the Department of Defense's (DOD) ability to assess the medical condition of servicemembers both before and after their deployments. Following GAO's May 1997 report, Congress enacted legislation (10 U.S.C. 1074f) that required the Secretary of Defense to establish a medical tracking system for assessing the medical condition of servicemembers before and after deployments. GAO was asked to determine (1) whether DOD has established a medical tracking system to comply with requirements of 10 U.S.C. 1074f pertaining to pre- and postdeployment medical examinations, and (2) the extent to which DOD has effectively implemented a deployment health quality assurance program as part of its medical tracking system. In conducting this review, GAO analyzed pertinent documents and interviewed DOD officials."

A letter report issued by the Government Accountability Office with an abstract that begins "In recent years GAO and others have reported on problems in the financial management environment at the Department of Homeland Security's (DHS) Science and Technology Directorate (S&T). S&T was established by the Homeland Security Act of 2002 to, among other things, coordinate the federal government's civilian efforts to identify and develop countermeasures to emerging terrorist threats to our nation. As DHS's primary research and development arm, the directorate is tasked with providing federal, state, local, and tribal officials with state-of-the-art technology and other resources, such as protocols and training procedures for use in responding to, and recovery from, chemical, biological, radiological, nuclear, and explosive attacks. S&T is led by an Under Secretary and has a Chief Financial Officer (CFO) who is responsible for all budgeting and accounting for financial resources. S&T receives funds for research, development, acquisition, and operations. It also receives funds for management and administration that support the operations of the directorate in both headquarters and the field, such as the expenditures for personnel compensation and benefits, travel, and rent. The Department of Homeland Security Appropriations Act, 2007 (Appropriations Act) provided about $973 million …

Air pollution arising from the emission of nitrogen oxides as a result of combustion taking place in boilers, furnaces and engines, has increasingly been recognized as a problem. New methods to remove NO{sub x} emissions significantly and economically must be developed. The current technology for post-combustion removal of NO is the selective catalytic reduction (SCR) of NO by ammonia or possibly by a hydrocarbon such as methane. The catalytic decomposition of NO to give N{sub 2} will be preferable to the SCR process because it will eliminate the costs and operating problems associated with the use of an external reducing species. The most promising decomposition catalysts are transition metal (especially copper)-exchanged zeolites, perovskites, and noble metals supported on metal oxides such as alumina, silica, and ceria. The main shortcoming of the noble metal reducible oxide (NMRO) catalysts is that they are prone to deactivation by oxygen. It has been reported that catalysts containing tin oxide show oxygen adsorption behavior that may involve hydroxyl groups attached to the tin oxide. This is different than that observed with other noble metal-metal oxide combinations, which have the oxygen adsorbing on the noble metal and subsequently spilling over to the metal oxide. This observation …

Correspondence issued by the Government Accountability Office with an abstract that begins "Affordable housing organizations and Federal Home Loan Bank (FHLBank) members have raised concerns that a Federal Housing Finance Board (FHFB) rule limiting excess stock could adversely impact FHLBank earnings. In particular, concerns have been raised regarding the FHLBanks' Affordable Housing Program (AHP), which subsidizes the cost of affordable housing with funds from the 12 FHLBanks, all of whom are required to contribute a minimum of 10 percent of their prior year's net earnings to the program, subject to a minimum annual combined contribution of $100 million. Congress asked us to examine the impact of FHFB's rule making on AHP. Specifically, this report describes (1) the results of FHFB's rule making and the provisions of the final rule on excess stock, and (2) the potential impact of the final rule on AHP."

A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Homeland Security (DHS) has a large, diverse portfolio of property it uses to carry out its mission. GAO's objectives were to (1) describe DHS's real property portfolio; (2) determine what challenges, if any, DHS faces in managing real property and what actions it has taken in response to the administration's real property initiative; (3) determine what challenges DHS and the General Services Administration (GSA) face in consolidating DHS's Washington, D.C. headquarters; and (4) describe actions DHS has taken to help ensure the security of its facilities. GAO reviewed documents and interviewed officials from DHS, GSA, and other stakeholders, including the National Capital Planning Commission (NCPC) and the District of Columbia (D.C.)."

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This report explains the establishment and evolution of the Government Accountability Office (GAO) and its resources. The Government Accountability Office is the largest of three agencies that provides support staff, research, review, and analysis of congress.

This report gives an overview and current issues related to Grazing fees.

We argue that weakly coupled 3+1 dimensional large N SU(N) gauge theories, with 't Hooft coupling {gamma}, compactified on a three-sphere of radius R, exhibit a novel second order phase transition at a temperature T{sub c} = C{radical}{gamma} R. The known constant C depends on the details of the gauge theory. The phase transition is characterized by a change in the eigenvalue distributions of the fields. Above the transition, the only eigenvalues which condense are those of the lowest Kaluza-Klein mode of the spatial gauge field Ai on the three-sphere. Below the transition the eigenvalues of the lowest Kaluza-Klein mode of an additional field condense. We discuss in particular the examples of pure Yang-Mills theory and of the N = 4 supersymmetric Yang-Mills theory.

The International Linear Collider will give physicists a new cosmic doorway to explore energy regimes beyond the reach of today's accelerators. A proposed electron-positron collider, the ILC will complement the Large Hadron Collider, a proton-proton collider at the European Center for Nuclear Research (CERN) in Geneva, Switzerland, together unlocking some of the deepest mysteries in the universe. With LHC discoveries pointing the way, the ILC -- a true precision machine -- will provide the missing pieces of the puzzle. Consisting of two linear accelerators that face each other, the ILC will hurl some 10 billion electrons and their anti-particles, positrons, toward each other at nearly the speed of light. Superconducting accelerator cavities operating at temperatures near absolute zero give the particles more and more energy until they smash in a blazing crossfire at the centre of the machine. Stretching approximately 35 kilometres in length, the beams collide 14,000 times every second at extremely high energies -- 500 billion-electron-volts (GeV). Each spectacular collision creates an array of new particles that could answer some of the most fundamental questions of all time. The current baseline design allows for an upgrade to a 50-kilometre, 1 trillion-electron-volt (TeV) machine during the second stage of …

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National Security Technologies, LLC, has successfully implemented many scientific and engineering innovations in the new Large-Format Pinhole Camera (LFPHC), which have dramatically increased the detection sensitivity and reliability of the camera in exotic locations, such as the Sandia National Laboratories Z-facility. Quality improvements of the LFPHC have been demonstrated in its fielding at Z, where high-quality images were recorded. A major improvement was the development of a new, user-friendly LFPHC camera back that would tolerate high radiation, electromagnetic interference, and mechanical shock. Key modifications resulted in improved detection sensitivity, spatial resolution, uniformity along the microchannel plate strip, and stability of the interframe timing and delay. Design considerations and improvements will be discussed.

This report provides an overview of U.S. relations with Latin American and the Caribbean, focusing on the role of Congress and congressional concerns.

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