Correspondence issued by the Government Accountability Office with an abstract that begins "This report responds to House Report 111-491 to accompany a bill for the National Defense Authorization Act for Fiscal Year 2011 (H.R. 5136). The House Report noted that according to the environmental impact statement for the proposed homeporting of additional ships at Naval Station, Mayport, Florida, homeporting of a nuclear-powered aircraft carrier would result in temporary surges of maintenance employees associated with the 3-year depot-level maintenance cycle for the aircraft carrier. The homeporting of the aircraft carrier at Mayport is projected to begin in fiscal year 2019. Also, the House report raised questions about the potential impact that the additional depot-level workload would have on the sustainability, efficiency, capabilities, and stability of the maintenance employees who would travel from Navy depots to Mayport to perform the maintenance. To examine these issues, the House report directed GAO to provide an assessment of the readiness and cost impacts of the aircraft carrier homeporting and maintenance at Mayport on the Navy's traveling workforce. In response, our objectives were to determine the extent to which (1) the Navy has identified potential workforce-related costs associated with the planned move and used cost-estimating best …

Correspondence issued by the Government Accountability Office with an abstract that begins "GAO published its third annual assessment of selected large-scale NASA projects. During this assessment we identified several issues that merit NASA's management attention. The federal government faces real fiscal limitations and will have to make difficult choices about upcoming priorities. This reality makes it more important than ever that NASA manage its programs and projects as efficiently and effectively as possible and within a budget that over recent years has remained relatively constant. It will also require that NASA make tough decisions about which projects to fund among core missions in science, aeronautics, and human space flight and exploration. Our work over the past three years has shown that NASA's major projects are frequently approved without evidence of a sound business case--ensuring a match between requirements and resources--and, therefore, cost more and take longer to develop than planned. Our March 2011 assessment found that 13 NASA projects that established baselines prior to fiscal year 2009 had experienced an average cost growth of almost 55 percent, with a combined increase in development costs of almost $2.5 billion from their baselines established at their Confirmation Review. While NASA has taken …

A letter report issued by the Government Accountability Office with an abstract that begins "GAO's work has shown that the National Aeronautics and Space Administration's (NASA) large-scale projects, while producing groundbreaking research and advancing our understanding of the universe, tend to cost more and take longer to develop than planned, and are often approved without evidence of a sound business case. Although space development is complex and diffi cult by nature, GAO has found that inherent risks are compounded by the need for better management and oversight practices. GAO has designated NASA's acquisition management a high risk area. This report provides a snapshot of how well NASA is planning and executing its acquisition of selected large-scale projects. It also provides observations about the performance of NASA's major projects and project management, outlines steps NASA is taking to improve its acquisitions, identifi es challenges that contribute to cost and schedule growth, and assesses 21 NASA projects, each with an estimated life-cycle cost of over $250 million."

A letter report issued by the Government Accountability Office with an abstract that begins "The 2001 Quadrennial Defense Review called for the Navy to provide more warfighting assets more quickly to multiple locations. Subsequently, the Navy made a preliminary decision to homeport a nuclear-powered aircraft carrier at Naval Station Mayport, Florida, which was affirmed by the 2010 Quadrennial Defense Review. In House Report 111-491, accompanying a proposed bill for the Fiscal Year 2011 National Defense Authorization Act (H.R. 5136), GAO was directed to develop an independent estimate of the total federal costs for the proposed homeporting. GAO's objectives were to (1) develop an independent estimate of the full life-cycle costs to homeport a nuclear aircraft carrier at Mayport and (2) determine to what extent the Navy's estimate meets the characteristics of a high-quality cost estimate. To do this, GAO worked with a firm experienced in preparing life-cycle cost estimates for major federal acquisitions and compared the Navy's cost estimating practices with the best practices in GAO's "Cost Estimating and Assessment Guide.""

Testimony issued by the Government Accountability Office with an abstract that begins ""

Testimony issued by the Government Accountability Office with an abstract that begins "This testimony discusses the results of our prior investigation of the Small Business Administration's (SBA) 8(a) Business Development Program. SBA's 8(a) program, named for a section of the Small Business Act, is a development program created to help small, disadvantaged businesses compete in the American economy and access the federal procurement market. To participate in the program, a firm must be certified as meeting several criteria, including: be a small business as defined by SBA; be unconditionally owned and controlled by one or more socially and economically disadvantaged individuals who are of good character and citizens of the United States; and show potential for success. Upon certification, firms can obtain federal contracts without competing fully and openly for the work. For example, agencies are permitted to enter into sole-source contracts after soliciting and negotiating with only one 8(a) company. They also can participate in restricted competitions for federal contracts, known as set-asides, open to only 8(a) companies. In March 2010, GAO issued two companion reports on the 8(a) program, one focused on internal control procedures and processes that SBA has implemented to ensure that only eligible firms participate …

Testimony issued by the Government Accountability Office with an abstract that begins "The Department of State (State) and the U.S. Agency for International Development (USAID) implement a broad range of U.S. government activities and programs overseas, including the conduct of diplomacy, development and security assistance, and efforts to combat terrorism and narcotics trafficking, among others. The President has requested approximately $55.7 billion for State and USAID in fiscal year 2012, an increase of nearly 8 percent over fiscal year 2010 funding levels. This testimony discusses four cross-cutting areas of U.S. foreign policy as implemented by State and USAID: (1) investments in key partner nations, (2) building the capacity of U.S. agencies to advance foreign policy priorities, (3) contractor oversight and accountability, and (4) strategic planning and performance measurement. This statement is based on GAO's extensive body of work on foreign operations issues, including fieldwork in Iraq, Afghanistan, Pakistan, Mexico, and numerous other locations ."

Section 1206 is the first major DOD authority to be used expressly for the purpose of training and equipping the national military forces of foreign countries. This report provides background on the pre-Section 1206 status of security assistance authorities and the factors contributing to the enactment of Section 1206. It then sets out the purposes of the legislation and scope of its activities, restrictions on its use, the DOD-State Department planning process, and funding. It concludes with a discussion of issues for Congress. An appendix provides a descriptive legislative history of the bill and evolving congressional committee attitudes towards the appropriate division of labor between the Department of Defense and the State Department regarding Section 1206 authority.

Now expired, Section 1207 of the National Defense Authorization Act (NDAA) for Fiscal Year 2006 (P.L. 109-163) provided authority for the Department of Defense (DOD) to transfer to the State Department up to $100 million per fiscal year in defense articles, services, training or other support for reconstruction, stabilization, and security activities in foreign countries. This report provides background and data on Section 1207 authority and funding that may be useful for possible debate in the 112th Congress regarding the appropriate roles and funding mechanisms for DOD, the State Department, and other U.S. agencies in conflict prevention, management, and resolution, and in stabilization and reconstruction operations.

The term "budget process," when applied to the federal government, actually refers to a number of processes that have evolved separately and that occur with varying degrees of coordination. This overview, and the accompanying flow chart, are intended to describe in brief each of the parts of the budget process that involve Congress, clarify the role played by each, and explain how they operate together. They include the President's budget submission, the budget resolution, reconciliation, sequestration, authorizations, and appropriations.

Free weekly newspaper that includes business and classified advertising.

Free weekly newspaper that includes business and classified advertising.

Weekly newspaper from Port Aransas, Texas on Mustang Island that includes local, state and national news along with extensive advertising.

This report discusses the national security problem regarding China's role in weapons proliferation as well as issues related to the U.S. policy response (including legislation) starting in the mid-1990s. Congress has long been concerned about whether U.S. policy advances the national interest in reducing the role of the People's Republic of China (PRC) in the proliferation of weapons of mass destruction (WMD) and missiles that could deliver them.

This report gives an overview of current intelligence issues of interest to the 112th Congress. It includes background and analysis including most recent development, ongoing Congressional concerns, specific issues for the 112th Congress, and a summary of related legislation from the 109th through the 112th Congresses.

This report provides an overview and analysis of U.S.-Yemeni relations, including issues such as: political change in Yemeni leadership; ongoing U.S. counterterrorism operations against Al Qaeda in the Arabian Peninsula (AQAP) operatives at large in Yemen's hinterlands; and international efforts to bolster the country's stability despite an array of daunting socio-economic problems. Congress and U.S. policymakers may be concerned with prospects for stabilizing Yemen and establishing strong bilateral relations with future Yemeni leaders.

Daily student newspaper from the University of North Texas in Denton, Texas that includes local, state, and campus news along with advertising.

Weekly Jewish newspaper from Fort Worth, Texas that includes local, state and national news along with extensive advertising.

This supplemental material provides a brief introduction to particle suspension mechanisms that cause exfoliated skin cells to become and remain airborne. The material presented here provides additional context to the primary manuscript and serves as background for designing possible future studies to assess the impact of skin cells as a source of infectious aerosols. This introduction is not intended to be comprehensive and interested readers are encouraged to consult the references cited.

We review the physics basis, main features and use of general-purpose Monte Carlo event generators for the simulation of proton-proton collisions at the Large Hadron Collider. Topics included are: the generation of hard-scattering matrix elements for processes of interest, at both leading and next-to-leading QCD perturbative order; their matching to approximate treatments of higher orders based on the showering approximation; the parton and dipole shower formulations; parton distribution functions for event generators; non-perturbative aspects such as soft QCD collisions, the underlying event and diffractive processes; the string and cluster models for hadron formation; the treatment of hadron and tau decays; the inclusion of QED radiation and beyond-Standard-Model processes. We describe the principal features of the Ariadne, Herwig++, Pythia 8 and Sherpa generators, together with the Rivet and Professor validation and tuning tools, and discuss the physics philosophy behind the proper use of these generators and tools. This review is aimed at phenomenologists wishing to understand better how parton-level predictions are translated into hadron-level events as well as experimentalists wanting a deeper insight into the tools available for signal and background simulation at the LHC.

Over the next 10-20 years, the probability of a terrorist attack using a weapon of mass destruction (WMD) on the United States is projected to increase. At some point over the next few decades, it may be inevitable that a terrorist group will have access to a WMD. The economic and social impact of an attack using a WMD anywhere in the world would be catastrophic. For weapons developed overseas, the routes of entry are air and sea with the maritime vector as the most porous. Providing a system to track, perform a risk assessment and inspect all inbound marine traffic before it reaches US coastal cities thereby mitigating the threat has long been a goal for our government. The challenge is to do so effectively without crippling the US economy. The Portunus Project addresses only the maritime threat and builds on a robust maritime domain awareness capability. It is a process to develop the technologies, policies and practices that will enable the US to establish a waypoint for the inspection of international marine traffic, screen 100% of containerized and bulk cargo prior to entry into the US if deemed necessary, provide a palatable economic model for transshipping, grow the …

The LHC RF station-beam interaction strongly influences the longitudinal beam dynamics, both single bunch and collective effects. Non-linearities and noise generated within the Radio Frequency (RF) accelerating system interact with the beam and contribute to beam motion and longitudinal emittance blowup. Thus, the noise power spectrum of the RF accelerating voltage strongly affects the longitudinal beam distribution. Furthermore, the coupled-bunch instabilities are also directly affected by the RF components and the configuration of the Low Level RF (LLRF) feedback loops. In this work we present a formalism relating the longitudinal beam dynamics with the RF system configurations, an estimation of collective effects stability margins, and an evaluation of longitudinal sensitivity to various LLRF parameters and configurations.

The Cargo Advanced Automated Radiography System (CAARS) program aims to utilize advanced radiographic systems to detect radiological and nuclear threats. Validation of initial design and testing concepts is a precondition for prototype system development and large-scale deployment. As expected, Depleted Uranium (DU) is a valid surrogate for Special Nuclear Materials (SNM) in CAARS Advanced Technology Demonstration (ATD) performance field-tests of transmission radiography systems. Dual-energy transmission measurements of DU are nearly identical to SNM, and are distinct from lower Z materials, provided the samples are matched to equal areal density. Results from an alternative method, using samples of equal thickness, showed sample discrimination by material density, rather than by atomic number (Z). The transmission measurements of DU and SNM were made with equipment that is nearly identical to current field systems. X-ray source beams at endpoint energies of 5.4 MeV and 9.6 MeV were used to measure transmission through the selected sample materials. The ratio of the x-ray linear attenuation coefficient times length ({micro}L) at 5.4 MeV, to {micro}L at 9.6 MeV is a metric for atomic number based discrimination of materials. The measured ratios were compared with computed values based on LLNL photon cross section data and LLNL developed models …

Since 2009 an Alignment Diagnostic System (ADS) has been operating at the undulator of the new Linac Coherent Light Source at SLAC National Accelerator Laboratory. The undulator spans a distance of 132 meters and is structured into 33 segments. Each segment is equipped with four hydrostatic leveling sensors and four wire position monitors. This report describes the set up and reflects the experience gained with the ADS.