This work describes the digital down-shift (DDS) technique, a new method of extracting short rise-time velocity profiles in the analysis of optically up-converted PDV data. The DDS technique manipulates the PDV data by subtracting a constant velocity (i.e., the DDS velocity νDDS) from the velocity profile. DDS exploits the simple fact that the optically up-converted data ride on top of a base velocity (ν0, the apparent velocity at no motion) with a rapid rise to a high velocity (νf) of a few km/s or more. Consequently, the frequency content of the signal must describe a velocity profile that increases from ν0 to ν0 + νf. The DDS technique produces velocity reversals in the processed data before shock breakout when ν0 < νDDS < ν0 + νf. The DDS analysis process strategically selects specific DDS velocities (velocity at which the user down shifts the data) that produce anomalous reversals (maxima and/or minima), which are predictable and easy to identify in the mid-range of the data. Additional analysis determines when these maxima and minima occur. By successive application of the DDS technique and iterative analysis, velocity profiles are extracted as time as a function of velocity rather than as a function of …

CH2M Hill Plateau Remediation Company (CHPRC) is currently assessing aquifer characterization needs to optimize pump-and-treat remedial strategies (e.g., extraction well pumping rates, pumping schedule/design) in the 200-ZP-1 operable unit (OU), and in particular for the immediate area of the 241 TX-TY Tank Farm. Specifically, CHPRC is focusing on hydrologic characterization opportunities that may be available for newly constructed and planned ZP-1 extraction wells. These new extraction wells will be used to further refine the 3-dimensional subsurface contaminant distribution within this area and will be used in concert with other existing pump-and-treat wells to remediate the existing carbon tetrachloride contaminant plume. Currently, 14 extraction wells are actively used in the Interim Record of Decision ZP-1 pump-and-treat system for the purpose of remediating the existing carbon tetrachloride contamination in groundwater within this general area. As many as 20 new extraction wells and 17 injection wells may be installed to support final pump-and-treat operations within the OU area. It should be noted that although the report specifically refers to the 200-ZP-1 OU, the large-scale test recommendations are also applicable to the adjacent 200-UP-1 OU area. This is because of the similar hydrogeologic conditions exhibited within these two adjoining OU locations.

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This air emissions document supports implementation of the Treatability Test Plan for Soil Desiccation as outlined in the Deep Vadose Zone Treatability Test Plan for the Hanford Central Plateau (DOE/RL-2007-56). Treatability testing supports evaluation of remedial technologies for technetium-99 (Tc-99) contamination in the vadose zone at sites such as the BC Cribs and Trenches. Soil desiccation has been selected as the first technology for testing because it has been recommended as a promising technology in previous Hanford Site technology evaluations and because testing of soil desiccation will provide useful information to enhance evaluation of other technologies, in particular gas-phase remediation technologies. A soil desiccation pilot test (SDPT) will evaluate the desiccation process (e.g., how the targeted interval is dried) and the long-term performance for mitigation of contaminant transport. The SDPT will dry out a moist zone contaminated by Tc-99 and nitrate that has been detected at Well 299-E13-62 (Borehole C5923). This air emissions document applies to the activities to be completed to conduct the SDPT in the 200-BC-1 operable unit located in the 200 East Area of the Hanford Site. Well 299-E13-62 is planned to be used as an injection well. This well is located between and approximately equidistant from …

The electronic as well as magnetic properties of Ga{sub x}Fe{sub 1-x} films were studied by soft x-ray measurements. Using x-ray magnetic circular dichroism the Fe majority-spin band was found to be completely filled for x {approx} 0.3. With further enhanced Ga content, the Fe moment as well as the angular dependence of the x-ray magnetic linear dichroism decrease strongly, which we attribute to the formation of D0{sub 3} precipitates. Moreover, the magnetocrystalline anisotropy drops significantly.

CH2M HILL Plateau Remediation Company (CHPRC) is currently evaluating the potential use of activated carbon adsorption for removing technetium-99 from groundwater as a treatment method for the Hanford Site's 200 West Area groundwater pump-and-treat system. The current pump-and-treat system design will include an ion-exchange (IX) system for selective removal of technetium-99 from selected wells prior to subsequent treatment of the water in the central treatment system. The IX resin selected for technetium-99 removal is Purolite A530E. The resin service life is estimated to be approximately 66.85 days at the design technetium-99 loading rate, and the spent resin must be replaced because it cannot be regenerated. The resulting operating costs associated with resin replacement every 66.85 days are estimated at $0.98 million/year. Activated carbon pre-treatment is being evaluated as a potential cost-saving measure to offset the high operating costs associated with frequent IX resin replacement. This document is preceded by the Literature Survey of Technetium-99 Groundwater Pre-Treatment Option Using Granular Activated Carbon (SGW-43928), which identified and evaluated prior research related to technetium-99 adsorption on activated carbon. The survey also evaluated potential operating considerations for this treatment approach for the 200 West Area. The preliminary conclusions of the literature survey are as …

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This report provides a listing of federal agricultural conservation assistance programs. Each listing includes a brief description of the program, information on major amendments in the Agricultural Act of 2014 (P.L. 113-79, 2014 farm bill), national scope and availability, states with the greatest participation, the backlog of applications or other measures of continuing interest, program funding authority, FY2018 funding, FY2019 Administration budget request, statutory authority, the authorization expiration date, and a link to the program's website.

This report discusses numerous temporary tax provisions exist in the tax code. Often referred to as “extenders,” these provisions were originally enacted with an expiration date that has then been temporarily extended, in some cases numerous times.

This report summarizes the general tax treatment of corporate and pass-through businesses and analyzes the most recent business data from the Internal Revenue Service(IRS).

This Congressional Research Service Report for Congress contains information about the Low Income Home Energy Assistance Program (LIHEAP). LIHEAP provides funds to states, the District of Colombia, U.S territories and commonwealths, and Indian tribal organizations (collectively referred to as grantees) primary to help low-income households pay home energy expenses.

The 2010 Deepwater Horizon oil spill leaked an estimated 4.1 million barrels of oil into the Gulf of Mexico, damaging the waters, shores, and marshes, and the fish and wildlife that live there. When resources in the public trust are harmed by contamination, federal, state, foreign, and tribal governments may seek compensation for damage to natural resources under certain laws. This is done in two steps: first, by assessing the harm; then, by determining how and what restoration will take place. Compensation for natural resource damage is intended to restore the natural resources to their condition before the damage and to compensate the public for the lost use of those resources. This report discusses legislation that provides a framework for assessing and mitigating the damage caused by such spills.

This report provides background information and potential issues for Congress on the Littoral Combat Ship (LCS), a relatively inexpensive Navy surface combatant equipped with modular "plug-and-fight" mission packages. The Navy's proposed FY2012 budget requests funding for the procurement of four LCSs. Current issues for Congress concerning the LCS program include changes or potential changes to the composition of LCS mission modules announced by the Navy in January 2011, the combat survivability of the LCS, and hull cracking on LCS-1. Congress's decisions on the LCS program could affect Navy capabilities and funding requirements, and the shipbuilding industrial base.

This report provides information regarding the role of U.S. and other foreign companies in facilitating Internet censorship by repressive regimes overseas. The report is divided into several sections: Examination of repressive policies in China and Iran, Relevant U.S. laws, U.S. policies to promote Internet freedom, Private sector initiatives, and Congressional action.

A letter report issued by the Government Accountability Office with an abstract that begins "In 2004, the Office of Management and Budget (OMB) launched the financial management line of business (FMLOB) initiative, in part, to reduce the cost and improve the quality and performance of federal financial management systems by leveraging shared services available from external providers. In response to a request to study FMLOB-related issues, this report (1) identifies the steps agencies have taken, or planned to take, to modernizing their core financial systems and migrate to an external provider and (2) assesses the reported benefits and significant challenges associated with migrations, including any factors related to OMB's new financial systems modernization approach. GAO's methodology included surveying federal agencies to obtain the status of their financial management systems as of September 30, 2009 (prior to OMB's March 2010 announcement of a new approach), and interviewing officials with selected agencies, external providers, and OMB. In oral comments on a draft of this report, OMB stated its position that it was too early for GAO to draw conclusions on its new approach because it is still a work in progress. For this reason, GAO is not making any new recommendations. However, …

A letter report issued by the Government Accountability Office with an abstract that begins "In fiscal year 2007, the majority of the Department of Defense's (DOD) basic research obligations were provided to higher education institutions. DOD reimburses these institutions for both direct and indirect costs for research. Two federal agencies, DOD and the Department of Health and Human Services (HHS), negotiate indirect cost rates used to reimburse higher education institutions for indirect costs on federally funded research awards, including DOD awards. GAO was asked to examine the following issues related to higher education institutions performing basic research for DOD: (1) the variation in proposed and negotiated indirect cost rates and factors that may contribute to variations; (2) how and to what extent the administrative cap and the DOD basic research cap limit reimbursement of indirect costs; and (3) the methods DOD uses for overseeing compliance with indirect cost reimbursement for grants. GAO surveyed a generalizable sample of higher education institutions performing basic research for DOD; reviewed agency guidance and policies; and interviewed officials from federal agencies, independent public accounting firms, and higher education institutions."

Daily publication of the U.S. Office of the Federal Register contains rules and regulations, proposed legislation and rule changes, and other notices, including "Presidential proclamations and Executive Orders, Federal agency documents having general applicability and legal effect, documents required to be published by act of Congress, and other Federal agency documents of public interest" (p. ii). Table of Contents starts on page iii.

This report discusses how the total debt of the federal government can increase, an historical overview of debt limits, and how the current economic slowdown has led to higher deficits and thereby a series of debt limit increases, as well as legislation related to these increases.

The Anti-Spyware Coalition (ASC) defines spyware as "technologies deployed without appropriate user consent and/or implemented in ways that impair user control over (1) material changes that affect their user experience, privacy, or system security; (2) use of their system resources, including what programs are installed on their computers; and/or (3) collection, use, and distribution of their personal or other sensitive information. The main issue for Congress over spyware is whether to enact new legislation specifically addressing spyware, or to rely on industry self-regulation and enforcement actions by the Federal Trade Commission (FTC) and the Department of Justice under existing law. This report discusses this issue, as well as the opinions of both the opponents and the supporters of industry self-regulation.

Turnover of membership in the House and Senate necessitates closing congressional offices. The closure of a congressional office requires an outgoing Member of Congress to evaluate pertinent information regarding his or her staff; the disposal of personal and official records; and final disposition of office accounts, facilities, and equipment. In the past several years, the House and Senate have developed extensive resources to assist Members in closing their offices. This report, which will be updated as warranted, is one of several CRS products focusing on various aspects of congressional operations and administration.

U.S. trade agreements such as the North American Free Trade Agreement (NAFTA), World Trade Organization agreements, and bilateral free trade agreements (FTAs) have been approved by majority vote of each house rather than by two-thirds vote of the Senate - that is, they have been treated as congressional-executive agreements rather than as treaties. The congressional-executive agreement has been the vehicle for implementing Congress's long-standing policy of seeking trade benefits for the United States through reciprocal trade negotiations. This report discusses this topic in brief.