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Initial Assessment of Electron and X-Ray Production and Charge Exchange in the NDCX-II Accelerator (open access)

Initial Assessment of Electron and X-Ray Production and Charge Exchange in the NDCX-II Accelerator

The purpose of this note is to provide initial assessments of some atomic physics effects for the accelerator section of NDCX-II. There are several effects we address: the production of electrons associated with loss of beam ions to the walls, the production of electrons associated with ionization of background gas, the possibly resultant production of X-rays when these electrons hit bounding surfaces, and charge exchange of beam ions on background gas. The results presented here are based on a number of caveats that will be stated below, which we will attempt to remove in the near future.
Date: February 18, 2010
Creator: Cohen, R. H.
System: The UNT Digital Library
Simulations of NSTX with a Liquid Lithium Divertor Module (open access)

Simulations of NSTX with a Liquid Lithium Divertor Module

A strategy to develop self-consistent simulations of the behavior of lithium in the Liquid Lithium Divertor (LLD) module to be installed in NSTX is described. In this initial stage of the plan, the UEDGE edge plasma transport code is used to simulate an existing NSTX shot, with UEDGE's transport coefficients set using midplane and divertor diagnostic data. The LLD is incorporated into the simulations as a reduction in the recycling coefficient over the outer divertor. Heat transfer calculations performed using the resulting heat flux profiles provide preliminary estimates on operating limits for the LLD as well as input data for subsequent steps in the LLD modeling effort.
Date: February 18, 2010
Creator: D.P. Stotler, R. Maingi, L.E. Zakharov, H.W. Kugel, A. Yu. Pigarov, T.D. Rognlien, and V.A. Soukhanovskii
System: The UNT Digital Library
Iraq: Politics, Elections, and Benchmarks (open access)

Iraq: Politics, Elections, and Benchmarks

Iraq has largely completed a formal political transition from the dictatorship of Saddam Hussein to a plural policy that encompasses varying sects and political factions. However, grievances and disputes among these groups remain over the relative claim of each on power and economic resources. These disputes permeate and complicate almost every issue in Iraq, including security, the terms and framework for elections, economic design making, and foreign policy.
Date: February 18, 2010
Creator: Katzman, Kenneth
System: The UNT Digital Library
FEMA's Pre-Disaster Mitigation Program: Overview and Issues (open access)

FEMA's Pre-Disaster Mitigation Program: Overview and Issues

This report discusses Pre-Disaster Mitigation (PDM), "Project Impact," and related legislative issues that Congress currently faces. PDM, as federal law and a program activity, began in 1997. Congress established a pilot program, which FEMA named "Project Impact," to test the concept of investing prior to disasters to reduce the vulnerability of communities to future disasters. From its beginnings as "Project Impact" to its current state, the PDM program has grown in its level of appropriated resources and the scope of participation nationwide.
Date: February 18, 2010
Creator: McCarthy, Francis X.
System: The UNT Digital Library
Navy Littoral Combat Ship (LCS) Program: Background, Issues, and Options for Congress (open access)

Navy Littoral Combat Ship (LCS) Program: Background, Issues, and Options for Congress

This report discusses the Navy's plans regarding the Littoral Combat Ship (LCS). The LCS is a relatively inexpensive Navy surface combatant equipped with modular "plug-and-fight" mission packages. The Navy wants to field a force of 55 LCSs.
Date: February 18, 2010
Creator: O'Rourke, Ronald
System: The UNT Digital Library
Pipeline Safety and Security: Federal Programs (open access)

Pipeline Safety and Security: Federal Programs

This report discusses congressional interest in securing the nation's pipelines. Nearly half a million miles of oil and natural gas transmission pipeline crisscross the United States. While an efficient and fundamentally safe means of transport, many pipelines carry hazardous materials with the potential to cause public injury and environmental damage.
Date: February 18, 2010
Creator: Parfomak, Paul W.
System: The UNT Digital Library
Security Assistance Reform: "Section 1206" Background and Issues for Congress (open access)

Security Assistance Reform: "Section 1206" Background and Issues for Congress

This report provides background on the pre-Section 1206 status of security assistance authorities and the factors contributing to the enactment of Section 1206, which provides the Secretary of Defense with authority to train and equip foreign military forces and foreign maritime security forces. 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.
Date: February 18, 2010
Creator: Serafino, Nina M.
System: The UNT Digital Library
License Suspensions for Nondriving Offenses: Practices in Four States That May Ease the Financial Impact on Low-Income Individuals (open access)

License Suspensions for Nondriving Offenses: Practices in Four States That May Ease the Financial Impact on Low-Income Individuals

A letter report issued by the Government Accountability Office with an abstract that begins "States suspend driver's licenses for a variety of offenses that are not directly related to driving safety. For example, all states have procedures to suspend licenses for child support arrearages. In addition, a majority of states issue suspensions for such offenses as failure to pay court or motor vehicle fines or maintain proper insurance. While recognizing that license suspension can be an effective tool for encouraging compliance with various laws, some policymakers and advocacy groups have raised concerns that certain drivers may face suspension because of their limited ability to meet financial obligations. They have also raised concerns that suspensions make it difficult for some low-income individuals to maintain or find work, and may make it more challenging for them to pay fines or meet child support obligations. Additionally, they have raised concerns that suspensions for nondriving offenses may clog court systems and divert resources to activities that do not improve traffic safety. Although the federal government has a limited role with regard to driver's licenses, federal law promotes nondriving suspensions in two circumstances. First, as a condition of federal funding for their child support enforcement …
Date: February 18, 2010
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Trafficking in Persons: U.S. Policy and Issues for Congress (open access)

Trafficking in Persons: U.S. Policy and Issues for Congress

Trafficking in persons (TIP) for the purposes of exploitation is both an international and a domestic crime that involves violations of labor, public health, and human rights standards. This report focuses on human trafficking both internationally and within the United States. The report begins with an overview of human trafficking including a discussion of the definition of human trafficking, the scope of the problem globally, and an examination of the victims. It follows with an analysis of global anti-trafficking efforts by the United States and the international community. The report then focuses on trafficking into and within the United States, examining relief for trafficking victims in the United States and discussing U.S. law enforcement efforts to combat domestic trafficking. The report concludes with an overview of anti-trafficking legislation and an analysis of policy issues related to human trafficking.
Date: February 18, 2010
Creator: Wyler, Liana Sun & Siskin, Alison
System: The UNT Digital Library