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Nuclear structure with accurate chiral perturbation theory nucleon-nucleon potential: Application to 6Li and 10B

Description: The authors calculate properties of A = 6 system using the accurate charge-dependent nucleon-nucleon (NN) potential at fourth order of chiral perturbation theory. By application of the ab initio no-core shell model (NCSM) and a variational calculation in the harmonic oscillator basis with basis size up to 16 {h_bar}{Omega} they obtain the {sup 6}Li binding energy of 28.5(5) MeV and a converged excitation spectrum. Also, they calculate properties of {sup 10}B using the same NN potential in a bas… more
Date: October 14, 2003
Creator: Navratil, P & Caurier, E
Partner: UNT Libraries Government Documents Department
open access

Block Matching for Object Tracking

Description: Models which describe road traffic patterns can be helpful in detection and/or prevention of uncommon and dangerous situations. Such models can be built by the use of motion detection algorithms applied to video data. Block matching is a standard technique for encoding motion in video compression algorithms. We explored the capabilities of the block matching algorithm when applied for object tracking. The goal of our experiments is two-fold: (1) to explore the abilities of the block matching al… more
Date: October 13, 2003
Creator: Gyaourova, A; Kamath, C & Cheung, S
Partner: UNT Libraries Government Documents Department
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Innovative Approach to Establish Root Causes for Cracking in Aggressive Reactor Environments

Description: The research focuses on the high-resolution characterization of degradation microstructures and microchemistries in specimens tested under controlled conditions for the environment and for the material where in-service complexities can be minimized. Thermodynamic and kinetic modeling of crack-tip processes is employed to analyze corrosion-induced structures and gain insights into degradation mechanisms. Novel mechanistic ''fingerprinting'' of crack-tip structures is used to isolate causes of en… more
Date: October 31, 2003
Creator: Bruemmer, Stephen M.; Thomas, Larry E.; Vetrano, John S. & Simonen, Edward P.
Partner: UNT Libraries Government Documents Department
open access

The Factory Approach to Creating TSTT Meshes

Description: The factory approach (a.k.a. virtual constructor) hides the details of the class implementing the TSTT from TSTT users. In version 0.5 of TSTT.sidl, the client hard codes the name of the implementing class into their code. The client is forced to choose from the small set of possible concrete classes defined in TSTT.sidl. This approach makes it impossible to support multiple implementations of the TSTT in a single process because each implementation has to implement the same class. The factory … more
Date: October 21, 2003
Creator: Epperly, T
Partner: UNT Libraries Government Documents Department
open access

FY'03 OMEGA Summary for LLE Annual Report

Description: Lawrence Livermore National Laboratory (LLNL) continued, in FY03, to be a large user of Omega, using 390 experimental shots. These are roughly broken into 2 groups: those in support of the inertial confinement fusion (ICF) program; and those in support of high energy density sciences (HEDS), which includes materials, equation of state, and physics experiments.
Date: October 24, 2003
Creator: Turner, R E
Partner: UNT Libraries Government Documents Department
open access

Surface Characterization of Stainless Steel Part by Eddy Current

Description: The Pacific Northwest National Laboratory (PNNL) has nearly a 40 year history of research and development in the field of nondestructive evaluation (NDE). One area of NDE expertise at PNNL is electromagnetic testing which includes a field of eddy current testing (ET). One benefit is that ET can typically be performed at high speeds, and as a result has found many applications in process monitoring and poduction lines. ET has been used in the nuclear, aerospace, and automotive industries for man… more
Date: October 1, 2003
Creator: Andersen, Eric S.; Hockey, Ronald L.; Prince, James M. & Good, Morris S.
Partner: UNT Libraries Government Documents Department
open access

RIKEN SCHOOL ON QCD TOPICS ON THE PROTON.

Description: The RIKEN School on QCD titled ''Topics on the Proton'' was held on March 26th, 2003 at the Nishina Memorial Hall of RIKEN, Wako, Saitama, Japan, sponsored by REEN (the Institute of Physical and Chemical Research). The school was the third of a new series with a broad perspective of hadron and nuclear physics. The organization and the size of the school were a little different from those of the previous ones. Prof. John Ellis, known as the world best theorist in particle and nuclear physics, ha… more
Date: October 1, 2003
Creator: ENYO,H. HAYAKAWA,M. KAWAI,H. SAITO,N. SHIBATA,T. A. TADA,T. WATANABE,Y. YAZAKI,K.
Partner: UNT Libraries Government Documents Department
open access

An Implicit Algorithm for the Numerical Simulation of Shape-Memory Alloys

Description: Shape-memory alloys (SMA) have the potential to be used in a variety of interesting applications due to their unique properties of pseudoelasticity and the shape-memory effect. However, in order to design SMA devices efficiently, a physics-based constitutive model is required to accurately simulate the behavior of shape-memory alloys. The scope of this work is to extend the numerical capabilities of the SMA constitutive model developed by Jannetti et. al. (2003), to handle large-scale polycryst… more
Date: October 16, 2003
Creator: Becker, Rich; Stolken, James; Jannetti, Carl & Bassani, John
Partner: UNT Libraries Government Documents Department
open access

STOMP. Subsurface Transport Over Multiple Phases. An Introductory Short Course

Description: This report provides a introductory short course for STOMP users. The short course includes 10 problems, varying from simple 1D aqueous flow to complex 3D multifluid flow and transport.
Date: October 1, 2003
Creator: Oostrom, Martinus; Meck, Dale H. & White, Mark D.
Partner: UNT Libraries Government Documents Department
open access

Contribution to: SciDAC Progess Report - Collaborative Design and Development of the Community Climate System Model for Terascale Computing

Description: Since pre-industrial times, the concentrations of various aerosol types (e.g., sulfate, black carbon, and mineral dust) and several key greenhouse gases such as methane (CH{sub 4}), nitrous oxide (N{sub 2}O), and ozone (O{sub 3}), have been changing because of anthropogenic activities. Collectively, the magnitude of the climate forcing from these species is larger than that of carbon dioxide (CO{sub 2}) although some are positive and some are negative (see Fig. 27). The behavior and effect of t… more
Date: October 17, 2003
Creator: Cameron-Smith, P; Caldeira, K; Taylor, J & Lamarque, J F
Partner: UNT Libraries Government Documents Department
open access

Vadose Zone Tracer Testing in the UK Sherwood Sandstone: Hydrogeophysical Data Report

Description: In 1998 a joint project between the universities of Lancaster and Leeds, funded by the UK Natural Environment Research Council and the UK Environment Agency, was initiated to examine, using geophysical methods, unsaturated flow and transport processes at two purposely developed field sites in the UK Sherwood Sandstone. More recently work by Lancaster university funded by a UK Natural Environment Research Council PhD studentship (awarded to Peter Winship) has continued the investigation at the t… more
Date: October 8, 2003
Creator: Binley, A
Partner: UNT Libraries Government Documents Department
open access

Magnetic properties of ultra thin epitaxial Fe films on GaAs(001)

Description: The magnetic properties of epitaxial Fe films on GaAs in the range of the first few monolayers have been the subject of a considerable number of investigations in recent years. The absence of magnetic signatures at room temperature has been attributed to the existence of a magnetic ''dead'' layer as well as superparamagnetism. By examining the temperature dependence of the magnetic linear dichroism of the Fe core level photoelectrons, we found that these ''non-ferromagnetic'' layers had in fact… more
Date: October 2, 2003
Creator: Morton, S A; Tobin, J G; Spangenberg, M; Neal, J R; Shen, T H; Waddill, G D et al.
Partner: UNT Libraries Government Documents Department
open access

Data Summary for the Pre Survey Interim Status Closure of the Area 514 Facility

Description: The purpose of this document is to summarize the data obtained from the sampling and analysis of selected locations in the Area 514 Facility. The objective of this document is to evaluate the data in a manner that will provide guidance for the final closure document. This guidance will assist in designing a sampling and analysis plan that will be efficient, cost effective and meet the criteria for acceptance by a independent state certified engineer for completion of the closure activity.
Date: October 13, 2003
Creator: Be Lue, A
Partner: UNT Libraries Government Documents Department
open access

An Ecosystem-Based Restoration Plan with Emphasis on Salmonid Habitats in the Lower Columbia River and Estuary

Description: The Bonneville Power Administration (BPA), in coordination with the U. S. Army Corps of Engineers (COE) and NOAA Fisheries, originated this project (BPA Project No. 2002-076; Contract No. DE-AC06-76RL01830, Release No. 652-24). Their intent was to develop a useful habitat restoration plan for the lower Columbia River and estuary to help guide restoration efforts and fulfill Reasonable and Prudent Alternative Action 159 of the 2000 National Marine Fisheries Service Biological Opinion on operatio… more
Date: October 14, 2003
Creator: Johnson, Gary E.; Thom, Ronald M.; Whiting, Allan H.; Sutherland, George B.; Berquam, Taunja J.; Ebberts, Blaine et al.
Partner: UNT Libraries Government Documents Department
open access

Ab initio shell model with a chiral-symmetry-based three-nucleon force for the p-shell nuclei

Description: The ab initio no-core shell model (NCSM) is extended to include a realistic three-body interaction in calculations for p-shell nuclei. They present results of first applications using the Argonne V8' nucleon-nucleon (NN) potential and the Tucson-Melbourne TM'(99) three-nucleon interaction (TNI). In addition to increase of binding energy, they observe a trend toward level-ordering and level-spacing improvement in comparison to experiment. With the TNI they obtain a correct ground-state spin for … more
Date: October 14, 2003
Creator: Navratil, P; Hayes, A C; Vary, J P & Ormand, W E
Partner: UNT Libraries Government Documents Department
open access

Shock Scattering in Multiphase Flow Model

Description: Multiphase flow models have been proposed for use in situations which have combined Rayleigh-Taylor (RTI) and Richtmyer-Meshkov (RMI) instabilities. Such an approach works poorly for the case of a heavy to light shock incidence on a developed interface. The physical original of this difficulty is traced to an inadequate model of the interfacial pressure term as it appears in the momentum and turbulence kinetic energy equations. Constraints on the form of a better model from a variety of sources… more
Date: October 16, 2003
Creator: Klem, D
Partner: UNT Libraries Government Documents Department
open access

XPS Studies of Yb14MnSb11 and Yb14ZnSb11

Description: Measurements of core and valence electronic states of single crystals of the rare earth transition metal Zintl phases Yb{sub 14}MnSb{sub 11} and Yb{sub 14}ZnSb{sub 11} were performed using the X-ray photoelectron spectroscopy station of Beamline 7 at the Advanced Light Source. Sample surfaces of Yb{sub 14}MnSb{sub 11} and Yb{sub 14}ZnSb{sub 11} were measured as received, after Ar{sup +} ion bombardment, and after cleaving in situ. Detailed analysis of the clean Mn and Zn analog sample surfaces … more
Date: October 2, 2003
Creator: Holm, A. P.; Ozawa, T. C.; Kauzlarich, S. M.; Morton, S. A.; Waddill, G. D.; Pickett, W. E. et al.
Partner: UNT Libraries Government Documents Department
open access

Assessment of Impacts from Updating Iowa's Residential Energy Code to Comply with the 2003 International Energy Conservation Code

Description: The state of Iowa currently requires that new buildings comply with the Council of American Building Officials? (CABO) 1992 Model Energy Code (MEC) (CABO 1992). CABO has been transformed into the International Code Council (ICC) and the MEC has been renamed the International Energy Conservation Code (IECC). The most recent edition of the code is the 2003 IECC (ICC 2003). Iowa?s Department of Natural Resources requested that the U.S. Department of Energy (DOE) compare the 1992 MEC with the 2003 … more
Date: October 31, 2003
Creator: Lucas, Robert G.
Partner: UNT Libraries Government Documents Department
open access

A Detailed Circuit Analysis of the Lawrence Livermore National Laboratory Building 141 Detonator Test Facility

Description: A detailed electrical equivalent circuit of an as-built utility fault simulator is presented. Standard construction techniques for light industrial facilities were used to build a test-bed for evaluating utility power level faults into unintentional victims. The initial components or victims of interest are commercial detonators. Other possible candidates for fault response analyses include motors, power supplies, control systems, computers, or other electronic equipment. Measured Thevenin para… more
Date: October 1, 2003
Creator: Mayhall, David J.; Wilson, Michael J. & Wilson, John H.
Partner: UNT Libraries Government Documents Department
open access

On the Utility of Antiprotons as Drivers for Inertial Confinement Fusion

Description: By contrast to the large mass, complexity and recirculating power of conventional drivers for inertial confinement fusion (ICF), antiproton annihilation offers a specific energy of 90MJ/{micro}g and thus a unique form of energy packaging and delivery. In principle, antiproton drivers could provide a profound reduction in system mass for advanced space propulsion by ICF. We examine the physics underlying the use of antiprotons ({bar p}) to drive various classes of high-yield ICF targets by the m… more
Date: October 20, 2003
Creator: Perkins, L J; Orth, C D & Tabak, M
Partner: UNT Libraries Government Documents Department
open access

FY2003 Annual Report: DOE Project on Heavy Vehicle Aerodynamic Drag

Description: Objective: {sm_bullet} Provide guidance to industry in the reduction of aerodynamic drag of heavy truck vehicles. {sm_bullet} Establish a database of experimental, computational, and conceptual design information, and demonstrate potential of new drag-reduction devices.
Date: October 24, 2003
Creator: McCallen, R. C.; Salari, K.; Ortega, J.; DeChant, L. J.; Roy, C. J.; Payne, J. J. et al.
Partner: UNT Libraries Government Documents Department
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