This report provides an overview of many of the key arms control and nonproliferation agreements and endeavors of the past 40 years. It is divided into three sections. The first describes arms control efforts between the United States and the states of the former Soviet Union, covering both formal, bilateral treaties, and the cooperative threat reduction process. The second section describes multilateral nuclear nonproliferation efforts, covering both formal treaties and less formal accommodations that have been initiated in recent years. The final section reviews treaties and agreements that address chemical, biological, and conventional weapons.

This report looks at how the European Union Emission Trading Scheme's coverage of carbon emission from commercial flights affects air carriers from the United States and other countries.

The use of biomass as an energy feedstock is emerging as a potentially viable alternative to address U.S. energy security concerns, foreign oil dependence, rural economic development, and diminishing sources of conventional energy. Biomass (organic matter that can be converted into energy) may include food crops, crops for energy, crop residues, wood waste and byproducts, and animal manure. Most legislation involving biomass has focused on encouraging the production of liquid fuels from corn. For over 30 years, the term biomass has been a part of legislation enacted by Congress for various programs, indicating some interest by the general public and policymakers in expanding its use. To aid understanding of why U.S. consumers, utility groups, refinery managers, and others have not fully adopted biomass as an energy resource, this report investigates the characterization of biomass in legislation.

This report analyzes Brazil's political, economic, and social conditions, and how those conditions affect its role in the world and its relationship with the United States.

At Colorado University-Boulder the primary task is to extend our gyrokinetic Particle-in-Cell simulation of tokamak micro-turbulence and transport to the area of energetic particle physics. We have implemented a gyrokinetic ion/massless fluid electron hybrid model in the global {delta}#14;f-PIC code GEM, and benchmarked the code with analytic results on the thermal ion radiative damping rate of Toroidal Alfven Eigenmodes (TAE) and with mode frequency and spatial structure from eigenmode analysis. We also performed nonlinear simulations of both a single-n mode (n is the toroidal mode number) and multiple-n modes, and in the case of single-n, benchmarked the code on the saturation amplitude vs. particle collision rate with analytical theory. Most simulations use the #14;f method for both ions species, but we have explored the full-f method for energetic particles in cases where the burst amplitude of the excited instabilities is large as to cause significant re-distribution or loss of the energetic particles. We used the hybrid model to study the stability of high-n TAEs in ITER. Our simulations show that the most unstable modes in ITER lie in the rage of 10 < n < 20. Thermal ion pressure effect and alpha particles non-perturbative effect are important in determining the …

This report assesses some of the policy implications of recent and ongoing events in the Middle East region, provides an overview of U.S. responses to date, and explores select case studies to illustrate some key questions and dilemmas that Congress and the executive branch may face with regard to these issues and others in the future.

A letter report issued by the Government Accountability Office with an abstract that begins "Debt buybacks can help advance Treasury’s goals under a variety of budget and market conditions. For example, Treasury currently faces rollover peaks—large increases in the amounts of maturing debt that must be refinanced at a given time—which expose Treasury to the risk of refinancing large amounts of debt when interest rates are less favorable. All four of our case study countries use debt buybacks to mitigate rollover risk. Buybacks can also be used to enhance liquidity, which can be adversely affected when the growth in borrowing slows rapidly and issue sizes decline significantly. GAO’s illustrative analysis of Treasury’s past buyback program showed that, had Treasury refinanced the debt by simultaneously issuing new debt, it could have captured a liquidity premium—the additional price investors are willing to pay for securities that can be easily traded—which would reduce interest costs."

This report describes and compares the drug-and crime - related policy restrictions contained in selected federal programs that provide assistance to low-income individuals and families.

Historically, high-level waste (HLW) glasses have been formulated with a low liquideus temperature (T{sub L}), or temperature at which the equilibrium fraction of spinel crystals in the melt is below 1 vol % (T{sub 0.01}), nominally below 1050 C. These constraints cannot prevent the accumulation of large spinel crystals in considerably cooler regions ({approx} 850 C) of the glass discharge riser during melter idling and significantly limit the waste loading, which is reflected in a high volume of waste glass, and would result in high capital, production, and disposal costs. A developed empirical model predicts crystal accumulation in the riser of the melter as a function of concentration of spinel-forming components in glass, and thereby provides guidance in formulating crystal-tolerant glasses that would allow high waste loadings by keeping the spinel crystals small and therefore suspended in the glass.

Congress has generally broad authority to impose requirements upon the federal procurement process, or the process whereby agencies obtain goods and services from the private sector. One of the many ways in which Congress has exercised this authority is by enacting measures intended to promote contracting and subcontracting with "small businesses" by federal agencies. This report describes and analyzes measures that Members of the 112th Congress have enacted or proposed in response to particular issues pertaining to small business contracting and subcontracting.

This report provides information about the Benefits and Financing on Federal Employees’ Retirement System. Most civilian federal employees who were hired before 1984 are covered by the civil service retirement system.

Congress continues to face questions about forestry practices, funding levels, and the federal role in wildfire protection. Recent fire seasons have been, by most standards, among the worst in the past half century. This report looks at factors contributing to wildfires as well as active and preventative treatments for wildfires.

A letter report issued by the Government Accountability Office with an abstract that begins "Although ACF has established a process to calculate a national improper payment estimate for the Foster Care program, the estimate is not based on a statistically valid methodology and consequently does not reflect a reasonably accurate estimate of the extent of Foster Care improper payments. In addition, the estimate deals with only about one-third of the federal expenditures for Foster Care, and is therefore incomplete. ACF’s methodology for estimating Foster Care improper payments was approved by the Office of Management and Budget (OMB) in 2004 with the understanding that continuing efforts would be taken to improve the accuracy of ACF’s estimates of improper payments in the ensuing years. ACF, however, continued to generally follow its initial methodology which, when compared to federal statistical guidance and internal control standards, GAO found to be deficient in all three phases of ACF’s estimation methodology—planning, selection, and evaluation. These deficiencies impaired the accuracy and completeness of the Foster Care program improper payments estimate of $73 million reported for fiscal year 2010."

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At the High-throughput Discovery of Scintillator Materials Facility at Lawrence Berkeley National Laboratory, scintillators are synthesized by solid-state reaction or melt mixing, forming crystalline powders. These powders are formed in various granularity and the crystal grain size affects the apparent luminosity of the scintillator. To accurately predict a &quot;full-size&quot; scintillator&#x27;s crystal luminosity, the crystal luminosity as a function of crystal granularity size has to be known. In this study, we examine Bi{sub 4}Ge{sub 3}O{sub 12} (BGO), Lu{sub 2}SiO{sub 5}:Ce (LSO), YAlO{sub 3}:Ce (YAP:Ce), and CsBa{sub 2}I{sub 5}:Eu{sup 2+} (CBI) luminosities as a function of crystalline grain size. The highest luminosities were measured for 600- to 1000-{micro}m crystal grain sizes for BGO and LSO, for 310- to 600-{micro}m crystal grain sizes for CBI, and for crystal grains larger than 165{micro}m for YAP:Ce. Crystal grains that were larger than 1 mm had a lower packing fraction, and smaller grains were affected by internal scattering. We measured a 34% decrease in luminosity for BGO when decreasing from the 600- to 1000- {micro}m crystal grain size range down to the 20- to 36-{micro}m range. The corresponding luminosity decrease for LSO was 44% for the same grain size decrease. YAP:Ce exhibited a luminosity decrease of …

Congress has generally broad authority to impose requirements upon the federal procurement process, or the process whereby agencies obtain goods and services from the private sector. One of the many ways in which Congress has exercised this authority is by enacting measures intended to promote contracting and subcontracting with "small businesses" by federal agencies.

Testimony issued by the Government Accountability Office with an abstract that begins "The Mobility Capabilities and Requirements Study 2016 (MCRS-16) provided some useful information concerning air mobility systems—such as intratheater airlift, strategic airlift, and air refueling—but several weaknesses in the study raised questions about its ability to fully inform decision makers. In particular, the MCRS-16 did not provide decision makers with recommendations concerning shortfalls and excesses in air mobility systems. In evaluating capabilities, the MCRS-16 used three cases that it developed of potential conflicts or natural disasters and identified the required capabilities for air mobility systems. Based on data in the MCRS-16, GAO was able to discern possible shortfalls or potential capacity that could be considered excess or an operational reserve, even though the MCRS-16 was ambiguous regarding whether actual shortfalls or excess capabilities exist. It also did not identify the risk associated with potential shortfalls or excesses. Identifying the risk associated with specific mobility systems could help with decisions to allocate resources."

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Applied mathematics has an important role to play in developing the tools needed for the analysis, simulation, and optimization of complex problems. These efforts require the development of the mathematical foundations for scientific discovery, engineering design, and risk analysis based on a sound integrated approach for the understanding of complex systems. However, maximizing the impact of applied mathematics on these challenges requires a novel perspective on approaching the mathematical enterprise. Previous reports that have surveyed the DOE&#x27;s research needs in applied mathematics have played a key role in defining research directions with the community. Although these reports have had significant impact, accurately assessing current research needs requires an evaluation of today&#x27;s challenges against the backdrop of recent advances in applied mathematics and computing. To address these needs, the DOE Applied Mathematics Program sponsored a Workshop for Mathematics for the Analysis, Simulation and Optimization of Complex Systems on September 13-14, 2011. The workshop had approximately 50 participants from both the national labs and academia. The goal of the workshop was to identify new research areas in applied mathematics that will complement and enhance the existing DOE ASCR Applied Mathematics Program efforts that are needed to address problems associated with complex systems. …

This report discusses the U.S. Navy's efforts in recent years to strengthen its ability to carry out irregular warfare (IW) counterterrorism (CT) activities. Some of the activities and organizations explored in this report are the creation of the Navy Expeditionary Combat Command (NECC), the Navy's riverine force, the Navy Irregular Warfare Office, and the Global Maritime Partnership. The report also discusses what potential oversight issues the Navy's IW and CT activities pose for Congress, including budget priorities.

The National Radiobiology Archives (NRA) are an archival program, started in 1989, to collect, organize and maintain data, laboratory notebooks, and animal tissue specimens from government (Department of Energy and its predecessor agencies) sponsored radiobiology life-span animal studies. These unique records, histopathology slides and paraffin embedded tissue blocks are maintained in a central facility and are available for further research study. The materials include electronic and paper records for each of more than 6,000 life-span-observations on dogs as well as details of major studies involving nearly 30,000 mice. Although these studies were performed over many years and at different laboratories with differing data management systems, the NRA has translated them into a standardized set of relational database tables. These can be distributed to interested individuals on written request. Specific Aims are: (1) To Maintain the Archive of Written Records from the Animal Experiments - The USTUR continued to maintain the NRA archives which consist of approximately 175 storage boxes containing laboratory notebooks, animal exposure records, animal pathologic records, and radiographs. These were stored in a 6,000 square foot leased facility in Richland, WA. Additionally, through a collaboration with Pacific Northwest National Laboratory's (PNNL) Low Dose Program, many of these records …

Testimony issued by the Government Accountability Office with an abstract that begins "We found that the likelihood that a small employer will sponsor a retirement plan largely depends on the size of the employer’s workforce and the workers’ average wages. Small employers, retirement experts, and other stakeholders also identified a number of challenges— such as plan complexity and resource constraints—to starting and maintaining retirement plans. In addition, stakeholders offered options for addressing some challenges to plan sponsorship, which included simplifying federal requirements for plan administration and increasing the tax credit for plan startup costs. Although Labor, IRS, and the Small Business Administration (SBA) collaborate in conducting education and outreach on retirement plans, agencies disseminate information online through separate websites and in a largely uncoordinated fashion. In addition, IRS currently does not have the means to collect information on employers that sponsor a certain type of IRA plan. As a result of our findings, we are recommending efforts for greater collaboration among federal agencies to foster small employer plan sponsorship and more complete collection of IRA plan sponsorship data."

Typically, the annual number of refugees that can be admitted into the United States, known as the refugee ceiling, and the allocation of these numbers by region are set by the President after consultation with Congress at the start of each fiscal year. For FY2012, the worldwide refugee ceiling is 76,000, with 73,000 admissions numbers allocated among the regions of the world and 3,000 numbers comprising an unallocated reserve. Overseas processing of refugees is conducted through a system of three priorities for admission. Priority 1 comprises cases involving persons facing compelling security concerns. Priority 2 comprises cases involving persons from specific groups of special humanitarian concern to the United States (e.g., Iranian religious minorities). Priority 3 comprises family reunification cases involving close relatives of persons admitted as refugees or granted asylum. Special legislative provisions facilitate relief for certain refugee groups.

This report looks at the history and current status, including Congress delegated funding, of energy-related research and development of coal-based synthetic petroleum and atomic power.