This project will focus on research and application development in the area of large scale data computing and visualization that are critical to the DoE BER program areas of climate change research, environmental sciences, life sciences, and medical sciences. Most commercial applications available today are unable to handle the sizes of data in these domains, usually in the order of terabytes and petabytes. This project will address this problem, by taking advantage of the advanced scientific computing infrastructure of the LITE and LONI to conduct research and develop software applications that run natively on these 64-bit supercomputing platforms. The project is consistent with the goals of Scientific Discovery through Advanced Computing (SciDAC), a DoE initiative.

By analyzing the pulse to pulse intensity fluctuations of the radiation emitted by a charge particle in the incoherent part of the spectrum, it is possible to extract information about the spatial distribution of the beam. At the Advanced Light Source (ALS) of the Lawrence Berkeley National Laboratory, we have developed and tested a simple scheme based on this principle that allows for the absolute measurement of the bunch length. A description of the method and the experimental results are presented.

This report provides current statistical information, profiles the Afghanistan narcotics trade's participants, explores linkages between narcotics, insecurity, and corruption, and reviews U.S. and international policy responses since late 2001. The report also considers ongoing policy debates regarding the counternarcotics role of coalition military forces, poppy eradication, alternative livelihoods, and funding issues for Congress.

This report discusses agricultural credit, which makes or guarantees loans to farmers who cannot qualify at other lenders, and the Farm Credit System (FCS), which is a network of borrower-owned lending institutions operating as a government-sponsored enterprise.

Individual raw data streams from instrumentation at the Atmospheric Radiation Measurement (ARM) Program Climate Research Facility (ACRF) fixed and mobile sites are collected and sent to the Data Management Facility (DMF) at Pacific Northwest National Laboratory (PNNL) for processing in near real time. Raw and processed data are then sent daily to the ACRF Archive, where they are made available to users. For each instrument, we calculate the ratio of the actual number of data records received daily at the Archive to the expected number of data records. The results are tabulated by (1) individual data stream, site, and month for the current year and (2) site and fiscal year (FY) dating back to 1998. Table 1 shows the accumulated maximum operation time (planned uptime), actual hours of operation, and variance (unplanned downtime) for the period October 1 - December 31, 2007, for the fixed sites and the mobile site. The AMF has been deployed to Germany and this was the final operational quarter. The first quarter comprises a total of 2,208 hours. Although the average exceeded our goal this quarter, a series of severe weather events (i.e., widespread ice storms) disrupted utility services, which affected the SGP performance measures. …

This report provides information on the Issues for the 110th Congress with Cuba.U.S policy of Cuba has consisted largely of isolating the communist nation's economic sanctions, which the Bush administration has tightened significantly.

A general phenomenological-based elasto-plastic nonlinear isotropic strain hardening material model was implemented in DYNA3D for use in solid, beam, truss, and shell elements. The constitutive model, Model 71, is based upon conventional J2 plasticity and affords optional temperature and rate dependence (visco-plasticity). The expressions for strain hardening, temperature dependence, and rate dependence allow it to represent a wide variety of material responses. Options to capture temperature changes due to adiabatic heating and thermal straining are incorporated into the constitutive framework as well. The verification problem developed for this constitutive model consists of four uni-axial right cylinders subject to constant true strain-rate boundary conditions. Three of the specimens have different constant strain rates imposed, while the fourth specimen is subjected to several strain rate jumps. The material parameters developed by Fehlmann (2005) for 21-6-9 Nitronic steel are utilized. As demonstrated below, the finite element (FE) simulations are in excellent agreement with the theoretical responses and indicated the model is functioning as desired. Consequently, this problem serves as both a verification problem and regression test problem for DYNA3D.

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A letter report issued by the Government Accountability Office with an abstract that begins "In January 2003, GAO designated federal real property as a high-risk area, citing the government's overreliance on costly, long-term leasing as one of the major reasons. GAO's work over the years has shown that building ownership often costs less than operating leases, especially for long-term space needs. GAO was asked to identify (1) the profile of domestically held, federally leased space including the overall amount and type of space agencies lease, and any related trends; (2) the factors that drive agencies to lease space that may be more cost-effective to own; and (3) any actions taken by the administration and alternative approaches proposed to address this issue. GAO reviewed fiscal year 2006 Federal Real Property Profile (FRPP) leasing data and relevant documents and interviewed officials from the General Services Administration (GSA), the Office of Management and Budget (OMB), and the U.S. Postal Service (USPS). GAO also reviewed 10 building leases that were among those with the largest dollar value in 3 locations GAO visited."

This report provides information about the Federal Pension and Retirement Benefits on Former Presidents. The GSA is authorized by the FPA to provide an office staff and suitable office space at a location in the United States.

Congress approved an FY2008 Consolidated Appropriations Act (H.R. 2764) during the week of December 17, 2007, that included some emergency supplemental funding for international affairs requested by the White House. This report analyzes the international affairs portion of the request and tracks related legislative activity.

This report provides an overview of this issue and implications for U.S.-China trade relations.

A letter report issued by the Government Accountability Office with an abstract that begins "Since the 1998 near collapse of Long-Term Capital Management (LTCM), a large hedge fund--a pooled investment vehicle that is privately managed and often engages in active trading of various types of securities and commodity futures and options--the number of hedge funds has grown, and they have attracted investments from institutional investors such as pension plans. Hedge funds generally are recognized as important sources of liquidity and as holders and managers of risks in the capital markets. Although the market impacts of recent hedge fund near collapses were less severe than that of LTCM, they recalled concerns about risks associated with hedge funds and they highlighted the continuing relevance of questions raised over LTCM. This report (1) describes how federal financial regulators oversee hedge fund-related activities under their existing authorities; (2) examines what measures investors, creditors, and counterparties have taken to impose market discipline on hedge funds; and (3) explores the potential for systemic risk from hedge fund-related activities and describes actions regulators have taken to address this risk. In conducting this study, GAO reviewed regulators' policy documents and examinations and industry reports and interviewed regulatory and …

This report outlines and history of the Revitalization of Distressed Public Housing program.

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The report opens with a discussion of how to analyze the impact of immigrants on the pay and job opportunities of native-born workers. It then uses this framework to examine and interpret the empirical literature on the subject. The report concludes with a discussion of policy implications.

This report discusses the Low-Income Housing Tax Credit (LIHTC), which is a federal provision that reduces the income tax liability of taxpayers claiming the credit. These taxpayers are typically investors in real estate development projects that have traded cash for the tax credits to support the production of affordable housing. The credit is intended to lower the financing costs of housing developments so that the rental prices of units can be lower than market rates, and thus, presumably, affordable.

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This report provides a background on these traditions and their relationship to active terrorist groups; it also summarizes recent charges and responses, including the findings of the final report of the 9/11 Commission and relevant legislation in the 110th Congress.

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Clouds of low energy electrons in the vacuum beam pipes of accelerators of positively charged particle beams present a serious limitation for operation at high currents. Furthermore, it is difficult to probe their density over substantial lengths of the beam pipe. We have developed a novel technique to directly measure the electron cloud density via the phase shift induced in a TE wave transmitted over a section of the accelerator and used it to measure the average electron cloud density over a 50 m section in the positron ring of the PEP-II collider at the Stanford Linear Accelerator Center.

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Testimony issued by the Government Accountability Office with an abstract that begins "The Department of Defense (DOD) relies extensively on contractors to support deployed forces for services that range from food and housing services to intelligence analysis. Since 1997, GAO has reported on DOD's shortcomings in managing and overseeing its use of contractor support. Part of the difficulty attributed to these shortcomings is that no one person or entity that made the decision to send 129,000 contractors to Iraq. Rather, numerous DOD activities were involved, thus adding to the complexity of the problems which GAO identified in its past work on this topic. This testimony focuses on (1) the problems that DOD has faced in managing and overseeing its contractor support to deployed forces and (2) future challenges that DOD will need to address to improve its oversight and management of contractors at deployed locations. In addition, as you requested, we have developed several actions Congress may wish to consider requiring DOD to take. This testimony is based on previously issued GAO reports and testimonies on DOD's management and oversight of contractor support to deployed forces that focused primarily on U.S. efforts in Southwest Asia. This work was conducted in …