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U.S. Public Diplomacy: State Department and Broadcasting Board of Governors Expand Post-9/11 Efforts but Challenges Remain

Description: Testimony issued by the Government Accountability Office with an abstract that begins "Polls taken in Islamic countries after 9/11 suggested that many or most people had a favorable view of the United States and its fight against terrorism. By 2003, opinion research indicated that foreign publics, especially in countries with large Muslim populations, viewed the United States unfavorably. GAO issued two studies in 2003 that examined (1) changes in U.S. public diplomacy resources and programs si… more
Date: August 23, 2004
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

FCC Media Ownership Rules: Current Status and Issues for Congress

Description: The Federal Communications Commission (“FCC” or “Commission”) adopted an order on June 2, 2003 that modified five of its media ownership rules and retained two others. The new rules have never gone into effect. Congress passed the FY2004 Consolidated Appropriations Act (P.L. 108-199), Sec. 629 of which instructs the FCC to modify one of the rules — the National Television Ownership rule. This report examines these rules and relevant policy issues.
Date: August 23, 2004
Creator: Goldfarb, Charles B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Modelling and Experimental Studies of the Effect of Water at the Polymer-Filler Interface in Silica-Filled Siloxane Rubbers

Description: Silica-filled polydimethylsiloxane (PDMS) composite systems find a broad range of applications due to their chemical and environmental resilience and the ability to fine tune, through chemical and processing modifications, the chemical and mechanical properties resulting in a precise engineering property for the final component. Thus, requirements for, and life-performance predictions of, these materials require an understanding of the interaction between the silica filler and the polymer netwo… more
Date: August 23, 2004
Creator: Dinh, L N; Schildbach, M A; Balazs, G B; Gee, R & Maxwell, R S
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The NSA/SHEBA Cloud & Radiation Comparison Study

Description: Cloud and radiation data from two distinctly different Arctic areas are analyzed to study the differences between coastal Alaskan and open Arctic Ocean region clouds and their respective influence on the surface radiation budget. The cloud and radiation datasets were obtained from 1) the DOE North Slope of Alaska (NSA) facility in the coastal town of Barrow, Alaska, and 2) the SHEBA field program, which was conducted from an icebreaker frozen in, and drifting with, the sea-ice for one year in t… more
Date: August 23, 2004
Creator: Intrieri, Janet M. & Shupe, Matthew D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Advances in laser driven accelerator R&D

Description: Current activities (last few years) at different laboratories, towards the development of a laser wakefield accelerator (LWFA) are reviewed, followed by a more in depth discussion of results obtained at the L'OASIS laboratory of LBNL. Recent results on laser guiding of relativistically intense beams in preformed plasma channels are discussed. The observation of mono-energetic beams in the 100 MeV energy range, produced by a channel guided LWFA at LBNL, is described and compared to results obtai… more
Date: August 23, 2004
Creator: Leemans, Wim
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Optimization and beam control in large-emittance accelerators: Neutrino factories;

Description: Schemes for intense sources of high-energy muons require collection, rf capture, and transport of particle beams with unprecedented emittances, both longitudinally and transversely. These large emittances must be reduced or ''cooled'' both in size and in energy spread before the muons can be efficiently accelerated. Therefore, formation of muon beams sufficiently intense to drive a Neutrino Factory or Muon Collider requires multi-stage preparation. Further, because of the large beam phase space… more
Date: August 23, 2004
Creator: Johnstone, Carol
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Improved CART Data Products and 6cmm Parameterization for Clouds

Description: Reviewed here is the history of the participation in the Atmospheric Radiation Measurement (ARM) Program, with particular emphasis on research performed between 1999 and 2002, before the PI moved from the University of Utah to the University of Alaska, Fairbanks. The research results are divided into the following areas: IOP research, remote sensing algorithm development using datasets and models, cirrus cloud and SCM/GCM parameterizations, student training, and publications.
Date: August 23, 2004
Creator: Sassen, Kenneth
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Comparison of Electrochemical Methods to Determine Crevice Corrosion Repassivation Potential of Alloy 22 in Chloride Solutions

Description: Alloy 22 (N06022) is a nickel-based alloy highly resistant to corrosion. In some aggressive conditions of high chloride concentration, temperature and applied potential, Alloy 22 may suffer crevice corrosion, a form of localized corrosion. There are several electrochemical methods that can be used to determine localized corrosion in metallic alloys. One of the most popular for rapid screening is the cyclic potentiodynamic polarization (CPP). This work compares the repassivation potentials obtai… more
Date: August 23, 2004
Creator: Evans, K.; Yilmaz, A.; Day, S.; Wong, L. & Estill, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Marginal Stability of Microturbulence near ITB Onset on Alcator C-Mod

Description: Insight into microturbulence and transport in tokamak plasmas is being sought using linear simulations of drift waves near the onset time of an internal transport barrier (ITB) on Alcator C-Mod. Microturbulence is likely generated by instabilities of drift waves and causes transport of heat and particles. This transport is studied because the containment of heat and particles is important for the achievement of practical nuclear fusion. We investigate nearness to marginal stability of ion-tempe… more
Date: August 23, 2004
Creator: Baumgaertel, J. A.; Redi, M. H.; Budny, R. V.; McCune, D. C.; Dorland, W. & Fiore, C. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Metallurgical Analysis of Dynamically Deformed Aermet 100 Alloy Fragments

Description: Microstructural characterization of soft-captured fragments of explosive-driven AerMet 100 alloy hollow cylinders is performed to understand dynamic deformation and localization phenomena. Examination of the fragments reveals the deformation is characterized by bands of localized shear strain and cracking. Fracture surface morphologies for the cylinders are ductile dimples, indicative of tensile or shear failure. Although both annealed and maraged AerMet 100 exhibit similar phenomenon, the widt… more
Date: August 23, 2004
Creator: Sunwoo, A J; Becker, R; Goto, D M; Orzechowski, T J; Springer, H K & Syn, C K
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Incorporating a Full-Physics Meteorological Model into an Applied Atmospheric Dispersion Modeling System

Description: A new modeling system has been developed to provide a non-meteorologist with tools to predict air pollution transport in regions of complex terrain. This system couples the Penn State/NCAR Mesoscale Model 5 (MM5) with Earth Tech’s CALMET-CALPUFF system using a unique Graphical User Interface (GUI) developed at Pacific Northwest National Laboratory. This system is most useful in data-sparse regions, where there are limited observations to initialize the CALMET model. The user is able to define t… more
Date: August 23, 2004
Creator: Berg, Larry K.; Allwine, K Jerry & Rutz, Frederick C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Blob Dynamics in 3D BOUT Simulations of Tokamak Edge Turbulence

Description: Propagating filaments of enhanced plasma density, or blobs, observed in 3D numerical simulations of a diverted, neutral-fueled tokamak are studied. Fluctuations of vorticity, electrical potential {phi}, temperature T{sub e} and current density J{sub {parallel}} associated with the blobs have a dipole structure perpendicular to the magnetic field and propagate radially with large E {center_dot} B drift velocities (> 1 km/s). The simulation results are consistent with a 3D blob dynamics model … more
Date: August 23, 2004
Creator: Russell, D.; D'Ippolito, D.; Myra, J.; Nevins, W. & Xu, X.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Polymerization of Formic Acid under High Pressure

Description: We report combined Raman, infrared (IR) and x-ray diffraction (XRD) measurements, along with ab initio calculations on formic acid under pressure up to 50 GPa. Contrary to the report of Allan and Clark (PRL 82, 3464 (1999)), we find an infinite chain low-temperature Pna2{sub 1} structure consisting of trans molecules to be a high-pressure phase at room temperature. Our data indicate the symmetrization and a partially covalent character of the intra-chain hydrogen bonds above approximately 20 GP… more
Date: August 23, 2004
Creator: Goncharov, A F; Manaa, M R; Zaug, J M; Fried, L E & Montgomery, W B
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Chemical imaging of biological materials by NanoSIMS

Description: The NanoSIMS 50 represents the state -of-the-art for in situ microanalysis for secondary ion mass spectrometry (SIMS), combining unprecedented spatial resolution (as good as 50 nm) with ultra-high sensitivity (MDL of 200 atoms). The NanoSIMS incorporates an array of detectors, enabling simultaneous collection of 5 elements or isotopes originating from the same sputtered volume of a sample. The primary ion beam (Cs{sup +} or O{sup -}) can be scanned across the sample to produce quantitative seco… more
Date: August 23, 2004
Creator: Weber, P. K.; Smith, J. B.; Hutcheon, I. D.; Shmakov, A.; Rybitskaya, I. & Curran, H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Analysis of Tank 48H Samples HTF-E-04-049 and HTF-E-04-050

Description: Due to the need for additional HLW storage, successful disposition of the material in Tank 48H and return of the tank to routine service are two critically needed activities. As an initial step in the process, SRNL compositionally characterized the components of the Tank 48H slurry. A nominal Tank 48H Tank 48H slurry sample was collected on August 23, 2004 (HTF-E-04-049 and HTF-E-04-050). The August 23, 2004 sample contained approximately 2 Liters of Tank 48H slurry. This document provides the … more
Date: August 23, 2004
Creator: Lambert, D
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

2004 Annual Meeting - Genes, Mutations and Disease: The Environmental Connection

Description: The Meeting consisted of 9 Symposia, 4 Keynote Lectures, 3 Platform Sessions and 4 Poster Sessions. In addition there were Breakfast Meetings for Special Interest Groups designed to inform attendees about the latest advances in environmental mutagenesis research. Several of the topics to be covered at this broad meeting will be of interest to the Department of Energy, Office of Science. The relevance of this meeting to the DOE derives from the fact that low dose radiation may represent one of t… more
Date: August 23, 2004
Creator: Samson, Leona D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Future Potential of Hybrid and Diesel Powertrains in the U.S. Light-duty Vehicle Market

Description: Diesel and hybrid technologies each have the potential to increase light-duty vehicle fuel economy by a third or more without loss of performance, yet these technologies have typically been excluded from technical assessments of fuel economy potential on the grounds that hybrids are too expensive and diesels cannot meet Tier 2 emissions standards. Recently, hybrid costs have come down and the few hybrid makes available are selling well. Diesels have made great strides in reducing particulate an… more
Date: August 23, 2004
Creator: Greene, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

[Uyen Tran and Mary at MC office]

Description: A photograph of Uyen Tran and a woman named Mary who works in the department. They are standing in the UNT Multicultural Center office and have their arms behind one another's backs. There are signs and posters on the walls around them.
Date: August 23, 2004
Creator: University of North Texas. Multicultural Center.
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections
open access

Princeton Plasma Physics Laboratory FY2003 Annual Highlights

Description: The Princeton Plasma Physics Laboratory FY2003 Annual Highlights report provides a summary of the activities at the Laboratory for the fiscal year--1 October 2002 through 30 September 2003. The report includes the Laboratory's Mission and Vision Statements, a message ''From the Director,'' summaries of the research and engineering activities by project, and sections on Technology Transfer, the Graduate and Science Education Programs, Awards and Honors garnered by the Laboratory and the employee… more
Date: August 23, 2004
Creator: Phillips, Editors: Carol A. & DeMeo, Anthony R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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