A detailed instructional manual was created to guide criticality safety engineers through the process of designing a criticality alarm system (CAS) for Department of Energy (DOE) hazard class 1 and 2 facilities. Regulatory and technical requirements were both addressed. A list of design tasks and technical subtasks are thoroughly analyzed to provide concise direction for how to complete the analysis. An example of the application of the design methodology, the Criticality Alarm System developed for the Radioisotope Production Laboratory (RPL) of Richland, Washington is also included. The analysis for RPL utilizes the Monte Carlo code MCNP5 for establishing detector coverage in the facility. Significant improvements to the existing CAS were made that increase the reliability, transparency, and coverage of the system.

Annual financial report of the Texas Lottery Commission for fiscal year 2008, providing statements of assets, expenditures, revenues, and other relevant data as well as the report of an independent auditor.

After commenting briefly on the role of the typicality assumption in science, we advocate a phenomenological approach to the cosmological measure problem. Like any other theory, a measure should be simple, general, well defined, and consistent with observation. This allows us to proceed by elimination. As an example, we consider the proper time cutoff on a geodesic congruence. It predicts that typical observers are quantum fluctuations in the early universe, or Boltzmann babies. We sharpen this well-known youngness problem by taking into account the expansion and open spatial geometry of pocket universes. Moreover, we relate the youngness problem directly to the probability distribution for observables, such as the temperature of the cosmic background radiation. We consider a number of modifications of the proper time measure, but find none that would make it compatible with observation.

A letter report issued by the Government Accountability Office with an abstract that begins "The federal government's financial condition and fiscal outlook have deteriorated dramatically since 2000. The federal budget has gone from surplus to deficit and the nation's major reported long-term fiscal exposures--a wide range of programs, responsibilities, and activities that either explicitly or implicitly commit the government to future spending--have more than doubled. Current budget processes and measurements do not fully recognize these fiscal exposures until payments are made. Increased information and better incentives to address the long-term consequences of today's policy decisions can help put our nation on a more sound fiscal footing. Given its interest in accurate and timely information on the U.S. fiscal condition, the Senate Committee on the Budget asked us to update our study of other nations' experiences with accrual budgeting and look at other ways countries have increased attention to their long-term fiscal challenges."

The overall goals of the Tank Farm Vadose Zone Project, led by CH2M HILL Hanford Group, Inc., are 1) to define risks from past and future single-shell tank farm activities, 2) to identify and evaluate the efficacy of interim measures, and 3) to aid, via collection of geochemical information and data, the future decisions that must be made by the U.S. Department of Energy (DOE) regarding the near-term operations, future waste retrieval, and final closure activities for the single-shell tank Waste Management Areas (WMAs). For a more complete discussion of the goals of the Tank Farm Vadose Zone Project, see the overall work plan, Phase 1 RCRA Facility Investigation/Corrective Measures Study Work Plan for the Single-Shell Tank Waste Management Areas (DOE 1999). Specific details on the rationale for activities performed at WMA U are found in Crumpler (2003). To meet these goals, CH2M HILL Hanford Group, Inc., asked scientists from Pacific Northwest National Laboratory (PNNL) to perform detailed analyses of vadose zone sediment collected within the U Single-Shell Tank Farm. Specifically, this report contains all the geochemical and selected physical characterization data collected on vadose zone sediment recovered from ten direct push characterization holes emplaced to investigate vadose zone contamination …

The influence of epitaxial strain, in the form of tetragonal distortions, on the magnetic and magnetotransport properties of La{sub 0.67}Sr{sub 0.33}MnO{sub 3} thin films was studied. The tetragonal distortion (c/a ratio) was modulated through the choice of the substrate, ranging from c/a=1.007 on (001)-oriented (LaAlO{sub 3}){sub 0.3}(Sr{sub 2}AlTaO{sub 6}){sub 0.7} substrates to 0.952 on (110)-oriented GdScO{sub 3} substrates. In agreement with previous theoretical predictions, these large values of tensile strain cause the Curie temperature and the saturation magnetization to decrease, alter the temperature dependence of the resistivity and magnetoresistance, and increase the resistivity several orders of magnitude.

The twin aspects of energy and control (or direction) are the underlying concepts. Matter and energy are closely linked, and their understanding and control will have overwhelming importance for our civilization, our planet, our science, and our technology. This importance ranges even beyond the large portfolio of BES, both because these truly significant Grand Challenges confront many other realms of science and because even partial solutions to these challenges will enrich scientists’ collective imagination and ability to solve problems with new ideas and new methods.

I develop a formulation for Hamiltonian dynamics in an accelerator with magnets whose edges follow a spiral. I demonstrate using this Hamiltonian that a spiral FFAG can be made perfectly 'scaling'. I describe how one computes the RF phase during a rapid acceleration cycle to keep the beam at the appropriate RF phase. I examine the effect of tilting an RF cavity with respect a radial line from the center of the machine, potentially with a different angle than the spiral of the magnets. I discuss partially the effects of the finite energy jumps on the dynamics. This is a status report of work that is still incomplete.

A letter report issued by the Government Accountability Office with an abstract that begins "To better understand how changes in domestic and international petroleum products markets have affected prices, GAO was asked to evaluate trends in (1) the international trade of petroleum products, (2) refining capacity and intensity of refining capacity use internationally and in the United States, (3) international and domestic crude oil and petroleum product inventories, and (4) domestic petroleum supply infrastructure. To address these objectives, we reviewed numerous studies, evaluated data, and spoke to many industry officials and experts and agency officials."

A variety of surveillance operations require the ability to track vehicles over a long period of time using sequences of images taken from a camera mounted on an airborne or similar platform. In order to be able to see and track a vehicle for any length of time, either a persistent surveillance imager is needed that can image wide fields of view over a long time-span or a highly maneuverable smaller field-of-view imager is needed that can follow the vehicle of interest. The algorithm described here was designed for the persistence surveillance case. In turns out that most vehicle tracking algorithms described in the literature[1,2,3,4] are designed for higher frame rates (> 5 FPS) and relatively short ground sampling distances (GSD) and resolutions ({approx} few cm to a couple tens of cm). But for our datasets, we are restricted to lower resolutions and GSD's ({ge}0.5 m) and limited frame-rates ({le}2.0 Hz). As a consequence, we designed our own simple approach in IDL which is a deterministic, motion-guided object tracker. The object tracking relies both on object features and path dynamics. The algorithm certainly has room for future improvements, but we have found it to be a useful tool in evaluating …

A letter report issued by the Government Accountability Office with an abstract that begins "A growing portion of federal spending is related to buying services such as administrative, management, and information technology support. Services accounted for about 60 percent of total fiscal year 2006 procurement dollars. The Services Acquisition Reform Act (SARA) of 2003 established a Services Acquisition Advisory Panel to make recommendations for improving acquisition practices. In January 2007, the panel proposed 89 recommendations to improve federal acquisition practices. GAO was asked to determine how the panel recommendations compare to GAO's past work and identify how the Office of Federal Procurement Policy (OFPP) expects the recommendations to be addressed. To do this, GAO analyzed the panel report and compared its findings and recommendations to GAO's past work and recommendations, obtained OFPP's views on how it expected the recommendations to be implemented, and reviewed proposed legislation in Congress to determine if legislative provisions had the potential to address some recommendations."

This report is a guide to one of the regular appropriations bills that Congress considers each year. It is designed to supplement the information provided by the House and Senate Appropriations Subcommittees on Defense. For both defense authorization and appropriations, this report summarizes the status of the bills, their scope, major issues, funding levels, and related congressional activity.

Other written product issued by the Government Accountability Office with an abstract that begins "In this document, GAO provides guidance on complying with government auditing standards reporting requirements for the report on internal control for audits of certain entities subject to the requirements of the Sarbanes-Oxley Act of 2002 and Government Auditing Standards."

Background: Most bacterial genes were acquired by horizontalgene transfer from other bacteria instead of being inherited bycontinuous vertical descent from an ancient ancestor}. To understand howthe regulation of these {acquired} genes evolved, we examined theevolutionary histories of transcription factors and of regulatoryinteractions from the model bacterium Escherichia coli K12. Results:Although most transcription factors have paralogs, these usually arose byhorizontal gene transfer rather than by duplication within the E. colilineage, as previously believed. In general, most neighbor regulators --regulators that are adjacent to genes that they regulate -- were acquiredby horizontal gene transfer, while most global regulators evolvedvertically within the gamma-Proteobacteria. Neighbor regulators wereoften acquired together with the adjacent operon that they regulate, sothe proximity might be maintained by repeated transfers (like "selfishoperons"). Many of the as-yet-uncharacterized (putative) regulators havealso been acquired together with adjacent genes, so we predict that theseare neighbor regulators as well. When we analyzed the histories ofregulatory interactions, we found that the evolution of regulation byduplication was rare, and surprisingly, many of the regulatoryinteractions that are shared between paralogs result from convergentevolution. Another surprise was that horizontally transferred genes aremore likely than other genes to be regulated by multiple regulators, andmost of this complex regulation probably evolved …

Hydrogen has been identified as a leading candidate to replace petroleum as part of the transition to a sustainable energy system, and major efforts are being conducted worldwide to develop the technologies and supporting activities required for this transition. In the United States, the federal research efforts are led by the U.S. Department of Energy (DOE). The U.S. DOE Hydrogen Program is an integrated inter-office program being conducted by the Office of Energy Efficiency and Renewable Energy, Office of Nuclear Energy (DOE-NE), Office of Fossil Energy and Office of Science. The primary objective of the DOE-NE Nuclear Hydrogen Initiative (NHI) is to develop the nuclear hydrogen production technologies necessary to produce hydrogen at a cost competitive with other alternative transportation fuels. The focus of the NHI is on thermochemical cycles and high temperature electrolysis. The Savannah River National Laboratory (SRNL) has been tasked with the primary responsibility to perform research and development in order to characterize, evaluate and develop the Hybrid Sulfur (HyS) thermochemical process. The HyS Process uses a sulfur dioxide depolarized electrolyzer (SDE) to split water and produce hydrogen. During FY05 and FY06, SRNL designed and conducted proof-of-concept testing for a SDE using a low temperature, PEM fuel …

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This report gives a summary of the achievements under DOE contract No. DOE/ER/14150 during the period September 1, 1990 to December 31, 2007. This project was concerned with the molecular modeling of solid-fluid equilibrium. The focus was on understanding how solid-fluid and solid-solid phase behavior are related to molecular structure, and the research program made a seminal contribution in this area. The project led to 34 journal articles, including a comprehensive review article published in Advances in Chemical Physics. The DOE funding supported the work of 5 Ph.D. students, 2 M.S. students and 5 postdoctoral researchers.

Correspondence issued by the Government Accountability Office with an abstract that begins "About 5,500 people die each year as a result of crashes involving large commercial trucks or buses, and about 160,000 more are injured. While the fatality rate for these crashes has generally decreased over the last 20 years, the decline has leveled off in the most recent years. The Federal Motor Carrier Safety Administration (FMCSA) within the U.S. Department of Transportation shoulders the primary federal responsibility for reducing these crashes, fatalities, and injuries and recognizes the need to make improvements if it is to achieve further substantial safety advancements. A key FMCSA effort to improve motor carrier safety is implementing the agency's Comprehensive Safety Analysis 2010 (CSA 2010) initiative. Through CSA 2010, FMCSA expects to reduce motor carrier crashes, fatalities, and injuries by using better ways to identify unsafe carriers and drivers; assessing a larger portion of the motor carrier industry and holding carriers and drivers accountable for sustained performance by regularly determining their safety fitness; and expanding the range of interventions to be used with carriers and drivers that fail to comply with safety requirements. Congress asked us to conduct a broad assessment of FMCSA's progress in …

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Correspondence issued by the Government Accountability Office with an abstract that begins "Securing the nation's borders has taken on added importance since the terrorist attacks of September 11, 2001. For years, millions of citizens of the United States, Canada, and Bermuda could enter the United States from certain parts of the Western Hemisphere using a wide variety of documents, including a driver's license issued by a state motor vehicle administration or a birth certificate, or in some cases for U.S. and Canadian citizens, without showing any documents. In the heightened national security environment following September 11, we have previously reported that documents like driver's licenses and birth certificates can easily be obtained, altered, or counterfeited and used by terrorists to travel into and out of the country. To help provide better assurance that border officials have the tools and resources to establish that people are who they say they are, as called for in the 9/11 Commission report, section 7209 of the Intelligence Reform and Terrorism Prevention Act of 2004, as amended, requires the Secretary of Homeland Security, in consultation with the Secretary of State, to develop and implement a plan that requires a passport or other document or combination …

A variety of system configurations are used in North America to meet the heating and domestic hot water needs of single-family homes. This includes, for example: warm air furnaces with electric water heaters; boilers with integrated hot water coils; and boilers with 'indirect' hot water storage tanks. Integrated hydronic systems which provide both heat and hot water are more popular only in the Northeast and mid-Atlantic regions. For those making decisions about configurations of these integrated hydronic systems, including control options, little information is available concerning the annual energy cost implications of these decisions. This report presents results of a project to use a direct load emulation approach to measure the performance of hydronic systems, develop performance curves, and to provide decision tools to consumers. This is a laboratory measurement system involving direct energy input and output measurements under different load patterns. These results are then used to develop performance correlations for specific systems that can be used to predict energy use in specific applications. A wide range of system types have been tested under this project including conventional boilers with 'tankless' internal coils for domestic hot water production, boilers with indirect external storage tanks, tank type water heaters which …

Correspondence issued by the Government Accountability Office with an abstract that begins "In fiscal year 2006, the United States Postal Service (USPS) was responsible for discarding about 6.1 billion pieces of undeliverable-as-addressed Standard Mail (a class of bulk advertising mail that includes catalogs and circulars). Some of this mail was recycled, but a large quantity of it was treated as waste and simply thrown away. Standard Mail is increasing in prominence due, in part, to its importance to businesses, nonprofits, and others as an effective way for (1) providing consumers with information on their products and services and (2) soliciting contributions from mail recipients. Some mail recipients, however, view Standard Mail as an annoyance that also poses privacy and environmental concerns. According to the Environmental Protection Agency, Standard Mail accounted for about 5.8 million tons, or 2.4 percent, of municipal solid waste (otherwise known as trash or garbage) in 2005. Of this amount, 64 percent was placed in a landfill or incinerated, and 36 percent was recycled. The 2006 Postal Accountability and Enhancement Act required GAO to report--by December 20, 2007--on, among other matters, USPS mail-related recycling accomplishments and additional recycling opportunities. For mail-related recycling accomplishments (initiatives), we expanded our …