23 Matching Results

Results open in a new window/tab.

The Army Corps of Engineers’ Nationwide Permits Program: Issues and Regulatory Developments (open access)

The Army Corps of Engineers’ Nationwide Permits Program: Issues and Regulatory Developments

This report contains the issues and regulatory developments in the army corps engineers' nationwide permits program.
Date: April 5, 2012
Creator: Copeland, Claudia
System: The UNT Digital Library
Canada-U.S. Relations (open access)

Canada-U.S. Relations

This report begins with a short overview of Canada's political scene, economic conditions, security, foreign policy, and discusses Canada - U.S relations.
Date: April 5, 2012
Creator: Ek, Carl & Fergusson, Ian F.
System: The UNT Digital Library
Changes in the Arctic: Background and Issues for Congress (open access)

Changes in the Arctic: Background and Issues for Congress

This report provides an overview of Arctic-related issues for Congress, including sovereignty claims; commercial shipping through the Arctic; oil, gas, and mineral exploration; endangered species; and increased military operations in the region. It includes background information on the region and on a variety of issues for which Congress may want to consider legislation.
Date: April 5, 2012
Creator: O'Rourke, Ronald
System: The UNT Digital Library
Conceptual Design - Polar Drive Ignition Campaign (open access)

Conceptual Design - Polar Drive Ignition Campaign

The Laboratory for Laser Energetics (LLE) at the University of Rochester is proposing a collaborative effort with Lawrence Livermore National Laboratory (LLNL), Los Alamos National Laboratories (LANL), the Naval Research Laboratory (NRL), and General Atomics (GA) with the goal of developing a cryogenic polar drive (PD) ignition platform on the National Ignition Facility (NIF). The scope of this proposed project requires close discourse among theorists, experimentalists, and laser and system engineers. This document describes how this proposed project can be broken into a series of parallel independent activities that, if implemented, could deliver this goal in the 2017 timeframe. This Conceptual Design document is arranged into two sections: mission need and design requirements. Design requirements are divided into four subsystems: (1) A point design that details the necessary target specifications and laser pulse requirements; (2) The beam smoothing subsystem that describes the MultiFM 1D smoothing by spectral dispersion (SSD); (3) New optical elements that include continuous phase plates (CPP's) and distributed polarization rotators (DPR's); and (4) The cryogenic target handling and insertion subsystem, which includes the design, fabrication, testing, and deployment of a dedicated PD ignition target insertion cryostat (PD-ITIC). This document includes appendices covering: the primary criteria and functional …
Date: April 5, 2012
Creator: Hansen, R
System: The UNT Digital Library
Discovery of Very High Energy Gamma Rays from PKS 1424+240 and Multiwavelength Constraints on its Redshift (open access)

Discovery of Very High Energy Gamma Rays from PKS 1424+240 and Multiwavelength Constraints on its Redshift

We report the first detection of very-high-energy (VHE) gamma-ray emission above 140GeV from PKS 1424+240, a BL Lac object with an unknown redshift. The photon spectrum above 140GeV measured by VERITAS is well described by a power law with a photon index of 3.8 {+-}0.5{sub stat} {+-} 0.3{sub syst} and a flux normalization at 200 GeV of (5.1 {+-} 0.9{sub stat} {+-} 0.5{sub syst}) x 10{sup -11} TeV{sup -1} cm{sup -2} s{sup -1}, where stat and syst denote the statistical and systematical uncertainty, respectively. The VHE flux is steady over the observation period between MJD 54881 and 55003 (2009 February 19 to June 21). Flux variability is also not observed in contemporaneous high energy observations with the Fermi Large Area Telescope (LAT). Contemporaneous X-ray and optical data were also obtained from the Swift XRT and MDM observatory, respectively. The broadband spectral energy distribution (SED) is well described by a one-zone synchrotron self-Compton (SSC) model favoring a redshift of less than 0.1. Using the photon index measured with Fermi in combination with recent extragalactic background light (EBL) absorption models it can be concluded from the VERITAS data that the redshift of PKS 1424+240 is less than 0.66.
Date: April 5, 2012
Creator: Acciari, V. A.; Aliu, E.; Arlen, T.; Aune, T.; Bautista, M.; Beilicke, M. et al.
System: The UNT Digital Library
Dispute Settlement in the World Trade Organization (WTO): An Overview (open access)

Dispute Settlement in the World Trade Organization (WTO): An Overview

None
Date: April 5, 2012
Creator: Grimmett, Jeanne J.
System: The UNT Digital Library
The Emergency Planning and Community Right-to-Know Act (EPCRA): A Summary (open access)

The Emergency Planning and Community Right-to-Know Act (EPCRA): A Summary

This report summarizes the Emergency Planning and Community Right-to-Know Act (EPCRA) and the major regulatory programs that mandate reporting by industrial facilities of releases of potentially hazardous chemicals to the environment, as well as local planning to respond in the event of significant, accidental releases.
Date: April 5, 2012
Creator: Schierow, Linda-Jo
System: The UNT Digital Library
The European Union: Questions and Answers (open access)

The European Union: Questions and Answers

This report provides a brief overview of the European Union (EU), an economic and political partnership between 27 sovereign member states. The report describes the formation of the EU, the three main institutions of the EU, and the EU's relationship with the United States.
Date: April 5, 2012
Creator: Archick, Kristin
System: The UNT Digital Library
Final Report (open access)

Final Report

The purpose of this project was to better understand the 'Multiscale Dynamics of Relaxor Ferroelectrics'. The output of the project is summarized in the narrative. The results of the work were presented at a number of different conferences and four papers were written, the references to which are also indicated in the report and which have also been uploaded on e-link. The multiscale dynamics of relaxors was clearly identified in the three characteristic temperatures that were identified. In particular, we were the first group to identify an intermediate temperature, T*, at which the correlations between off-center ions in relaxor cross-over from being dynamic to being static and giving rise to the characteristic relaxor behavior in the dielectric constant. Other groups have now confirmed the existence of such an intermediate temperature. We also made and reported two other observations: (1) a coherent interference phenomena (EIT-like effect) near the transition of several relaxors, which provides information on the nature and mechanism of the transition; and (2) in a similar way, inelastic neutron scattering results were interpreted as resonant scattering of acoustic phonons by localized modes in polar nanodomains. In parallel with the neutron scattering work, we also developed a theory of the …
Date: April 5, 2012
Creator: Toulouse, J.
System: The UNT Digital Library
Layout And Results From The Initial Opeeration Of The High-resolution X-ray Imaging Crystal Spectrometer On The Large Helical Device (open access)

Layout And Results From The Initial Opeeration Of The High-resolution X-ray Imaging Crystal Spectrometer On The Large Helical Device

First results of ion and electron temperature pro le measurements from the x-ray imaging crystal spectrometer (XICS) diagnostic on the Large Helical Device (LHD) are presented. This diagnostic system has been operational since the beginning of the 2011 LHD experimental campaign and is the rst application of the XICS diagnostic technique to helical plasma geometry. The XICS diagnostic provides measurements of ion and electron temperature pro les in LHD with a spatial resolution of 2cm and a time resolution of ≥#21; 10ms. Ion temperature pro les from the XICS diagnostic are possible under conditions where charge exchange recombination spectroscopy (CXRS) is not possible (high density) or is perturbative to the plasma (low density or radio frequency heated plasmas). Measurements are made by using a spherically bent crystal to provide a spectrally resolved 1D image of the plasma from line integrated emission of helium-like Ar16+. The nal hardware design and con guration are detailed along with the calibration procedures. Line-integrated ion and electron temperature measurements are presented, and the measurement accuracy is discussed. Finally central temperature measurements from the XICS system are compared to measurements from the Thomson scattering and CXRS systems, showing excellent agreement.
Date: April 5, 2012
Creator: Pablant, N A; Delgado-Apricio, L; Goto, M; Hill, K W; Lzerson, S; Morita, S et al.
System: The UNT Digital Library
Navy Aegis Ballistic Missile Defense (BMD) Program: Background and Issues for Congress (open access)

Navy Aegis Ballistic Missile Defense (BMD) Program: Background and Issues for Congress

This report discusses funding issues for Congress regarding the Aegis ballistic missile defense (BMD) program, which is carried out by the Missile Defense Agency (MDA). It looks at the background of the program and why it is necessary.
Date: April 5, 2012
Creator: O'Rourke, Ronald
System: The UNT Digital Library
Navy Aegis Ballistic Missile Defense (BMD) Program: Background and Issues for Congress (open access)

Navy Aegis Ballistic Missile Defense (BMD) Program: Background and Issues for Congress

This report provides background information and issues for Congress on the Aegis ballistic missile defense (BMD) program, which is carried out by the Missile Defense Agency (MDA) and the Navy, and gives Navy Aegis cruisers and destroyers a capability for conducting BMD operations Issues for Congress concerning the Aegis BMD program include demands for BMD capable Aegis ships, demands for Aegis ships in general, the U.S. economic impact of shifting four Aegis ships to Rota, Spain, U.S. vs. European naval contributions to European BMD, the capability of the SM-3 Block IIB Aegis BMD interceptor, and technical risk in the Aegis program.
Date: April 5, 2012
Creator: O'Rourke, Ronald
System: The UNT Digital Library
Navy Ohio Replacement (SSBN[X]) Ballistic Missile Submarine Program: Background and Issues for Congress (open access)

Navy Ohio Replacement (SSBN[X]) Ballistic Missile Submarine Program: Background and Issues for Congress

This report discusses the Navy's plan to develop and design a class of 12 next-generation ballistic missile submarines, or SSBN(X)s, as replacements for the 14 Ohio class SSBNs currently in operation. The report explores certain related issues for Congress, including the affordability of the project and its potential impact on other Navy shipbuilding programs, alternatives to the program, and which shipyard or shipyards will build the proposed ships.
Date: April 5, 2012
Creator: O'Rourke, Ronald
System: The UNT Digital Library
Nuclear Regulation: NRC's Oversight of Nuclear Power Reactors' Decommissioning Funds Could Be Further Strengthened (open access)

Nuclear Regulation: NRC's Oversight of Nuclear Power Reactors' Decommissioning Funds Could Be Further Strengthened

A letter report issued by the Government Accountability Office with an abstract that begins "The Nuclear Regulatory Commission (NRC) periodically reviews licensees’ decommissioning funds and related licensee data to determine if licensees have provided reasonable assurance that they will accumulate adequate funds for decommissioning. For example, licensees must submit estimates to NRC of decommissioning costs throughout the life of the reactor and submit fund status reports at least every 2 years while the reactor is operating. Licensees typically accumulate such funds over time through trust fund investments. The minimum amount of funds considered adequate is established by NRC’s decommissioning funding formula, which is based on information collected more than 30 years ago."
Date: April 5, 2012
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Regulation of Broadcast Indecency: Background and Legal Analysis (open access)

Regulation of Broadcast Indecency: Background and Legal Analysis

None
Date: April 5, 2012
Creator: unknown
System: The UNT Digital Library
The Repeal of "Don't Ask, Don't Tell": Issues for Congress (open access)

The Repeal of "Don't Ask, Don't Tell": Issues for Congress

On December 22, 2010, President Obama signed into law legislation calling for the repeal of the existing law barring open homosexuality in the military by prescribing a series of steps that must take place before repeal occurs. One step was fulfilled on July 22, 2011, when the President signed the certification of the process ending the Don't Ask, Don't Tell policy, which was repealed on September 20, 2011. This report considers issues that Congress may wish to consider as the repeal process proceeds.
Date: April 5, 2012
Creator: Burrelli, David F.
System: The UNT Digital Library
The Republic of the Philippines and U.S. Interests (open access)

The Republic of the Philippines and U.S. Interests

The United States and the Republic of the Philippines maintain close ties stemming from the U.S. colonial period, the bilateral security alliance, extensive military cooperation, and common strategic and economic interests. Although the United States closed its military bases in the Philippines in 1992, the two treaty allies have continued joint military activities related to counterterrorism and maritime security. This report looks at the U.S. foreign policy towards the Philippines.
Date: April 5, 2012
Creator: Lum, Thomas
System: The UNT Digital Library
Review of the WECC EDT phase 2 EIM benefits analysis and results report. (open access)

Review of the WECC EDT phase 2 EIM benefits analysis and results report.

A region-wide Energy Imbalance Market (EIM) was recently proposed by the Western Electricity Coordinating Council (WECC). In order for the Western Area Power Administration (Western) to make more informed decisions regarding its involvement in the EIM, Western asked Argonne National Laboratory (Argonne) to review the EIM benefits study (the October 2011 revision) performed by Energy and Environmental Economics, Inc. (E3). Key components of the E3 analysis made use of results from a study conducted by the National Renewable Energy Laboratory (NREL); therefore, we also reviewed the NREL work. This report examines E3 and NREL methods and models used in the EIM study. Estimating EIM benefits is very challenging because of the complex nature of the Western Interconnection (WI), the variability and uncertainty of renewable energy resources, and the complex decisions and potentially strategic bidding of market participants. Furthermore, methodologies used for some of the more challenging aspects of the EIM have not yet matured. This review is complimentary of several components of the EIM study. Analysts and modelers clearly took great care when conducting detailed simulations of the WI using well-established industry tools under stringent time and budget constraints. However, it is our opinion that the following aspects of the …
Date: April 5, 2012
Creator: Veselka, T.D.; Poch, L.A. & Botterud, A. (Decision and Information Sciences)
System: The UNT Digital Library
Switchgrass Demonstration Project (open access)

Switchgrass Demonstration Project

Develop a pilot study that establishes up to 120 acres of cropland in switchgrass and 20 acres on a TN Experiment Station Farm. This subtask would assess production of switchgrass within the state of Tennessee under a variety of conditions and topography through on-farm production totaling 120 acres. Farms would be selected to participate through a bid process. Costs of establishment and maintenance of the switchgrass would be covered. In addition, allowances would be made for covering land rent and providing a yield incentive. An information and education program would be provided to producers prior to the bid process to assist producers in their bid decision. Agronomic, logistic, energy conversion and farming system issues associated with commercialization of a biomass energy industry are evaluated. Information on the opportunities for producing switchgrass as an energy feedstock are extended
Date: April 5, 2012
Creator: Ugarte, Burton C. English and Daniel De La Torre
System: The UNT Digital Library
Unitarity Bounds and RG Flows in Time Dependent Quantum Field Theory (open access)

Unitarity Bounds and RG Flows in Time Dependent Quantum Field Theory

We generalize unitarity bounds on operator dimensions in conformal field theory to field theories with spacetime dependent couplings. Below the energy scale of spacetime variation of the couplings, their evolution can strongly affect the physics, effectively shifting the infrared operator scaling and unitarity bounds determined from correlation functions in the theory. We analyze this explicitly for large-N double-trace flows, and connect these to UV complete field theories. One motivating class of examples comes from our previous work on FRW holography, where this effect explains the range of flavors allowed in the dual, time dependent, field theory.
Date: April 5, 2012
Creator: Dong, Xi; Horn, Bart; Silverstein, Eva; Torroba, Gonzalo & /Stanford U., ITP /Stanford U., Phys. Dept. /SLAC
System: The UNT Digital Library
Water Infrastructure Financing: History of EPA Appropriations (open access)

Water Infrastructure Financing: History of EPA Appropriations

None
Date: April 5, 2012
Creator: Copeland, Claudia
System: The UNT Digital Library
Western Sahara (open access)

Western Sahara

This report discusses how Morocco and the independence-seeking Popular Front for the Liberation of Saqiat al Hamra and Rio de Oro (Polisario) have been vying for control of the Western Sahara, a former Spanish territory, since the 1970s. The report discusses recent settlement attempts, as well as how the Western Sahara issue has affected Algerian-Moroccan bilaterial relations, Moroccan relations with the African Union, and regional cooperation on economic and security issues. The report also discusses the United States' involvement in and stance on the issue.
Date: April 5, 2012
Creator: Arieff, Alexis
System: The UNT Digital Library
Women in Combat: Issues for Congress (open access)

Women in Combat: Issues for Congress

This report looks at the history of women in US military roles and combat since the 1990's. It also discusses critic's views of exclusionary policy as a civil rights issue.
Date: April 5, 2012
Creator: Burrelli, David F.
System: The UNT Digital Library