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1,809 Matching Results
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3-D Combinatorial Geometry in the MERCURY Monte Carlo Particle Transport Code
Lawrence Livermore National Laboratory is in the process of developing a new Monte Carlo Particle Transport code named MERCURY. This new code features a 3-D Combinatorial Geometry tracking algorithm. This paper details some of the characteristics of this Monte Carlo tracker
Date:
September 27, 2004
Creator:
Greenman, G
Object Type:
Article
System:
The UNT Digital Library
9/11 Commission Recommendations: Intelligence Budget
This report identifies the main recommendations of the 9/11 Commission with respect to the intelligence budget. This report also describes the intelligence budget process under current law to explain the effect of these recommendations and presents the current budget authorities of the Director of Central Intelligence, as well as budget provisions in two bills, S. 2774 and H.R. 5040, that include all Commission recommendations.
Date:
September 27, 2004
Creator:
Nicola, Thomas J.
Object Type:
Report
System:
The UNT Digital Library
9/11 Commission Recommendations: New Structures and Organization
This report discusses proposals addressing shortcomings concerning civil liberties protection, development, intelligence community management. and intelligence expertise as well as implications assessment. This report displays a chronology of development about the recommendations of the 9/11 Commission.
Date:
September 1, 2004
Creator:
Relyea, Harold C.
Object Type:
Report
System:
The UNT Digital Library
9/11 Terrorism: Global Economic Costs
This report provides a brief survey of the global economic costs of 9/11.
Date:
September 15, 2004
Creator:
Nanto, Dick K.
Object Type:
Report
System:
The UNT Digital Library
A 10 Hz Grazing Incidence pumped Ni-like Mo laser at 18.9 nm with 150 mJ pump energy
The first demonstration of the grazing incidence pumping (GRIP) scheme for laser-driven x-ray lasers (XRLs) is described utilizing 2-pulse pumping. A long pulse is incident normal to the target to produce a plasma with a particular density profile. Then a short pulse is incident at a grazing angle, chosen to optimally couple the short pulse laser energy into the specific density region where the inversion process will occur. The short pulse is simultaneously absorbed and refracted at a maximum electron density specified by the chosen pump angle then turns back into the gain region. The increased path length gives improved absorption allowing a reduction in the drive energy required for lasing. A Ni-like Mo XRL at 18.9 nm has been demonstrated with only 150 mJ total pump energy and a repetition rate of 10 Hz. We report high gains of 60 cm{sup -1} and the achievement of gain saturation for targets of 4 mm length.
Date:
September 30, 2004
Creator:
Keenan, R.; Dunn, J.; Patel, P. K.; Price, D. F.; Smith, R. F. & Shlyaptsev, V. N.
Object Type:
Article
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 34, No. 2, Ed. 1 Friday, September 3, 2004
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
September 3, 2004
Creator:
Delaney, Darcy
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 34, No. 3, Ed. 1 Friday, September 17, 2004
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
September 17, 2004
Creator:
Delaney, Darcy
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 34, No. 4, Ed. 1 Friday, September 24, 2004
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
September 24, 2004
Creator:
Delaney, Darcy
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
2003 Archaea: Ecology, Metabolism and Molecular Biology
The Gordon Research Conference (GRC) on 2003 Archaea: Ecology, Metabolism and Molecular Biology was held at Proctor Academy, Andover, NH from August 3-8, 2003. The Conference was well-attended with 150 participants (attendees list attached). The attendees represented the spectrum of endeavor in this field coming from academia, industry, and government laboratories, both U.S. and foreign scientists, senior researchers, young investigators, and students. In designing the formal speakers program, emphasis was placed on current unpublished research and discussion of the future target areas in this field. There was a conscious effort to stimulate lively discussion about the key issues in the field today. Time for formal presentations was limited in the interest of group discussions. In order that more scientists could communicate their most recent results, poster presentation time was scheduled. Attached is a copy of the formal schedule and speaker program and the poster program. In addition to these formal interactions, ''free time'' was scheduled to allow informal discussions. Such discussions are fostering new collaborations and joint efforts in the field. I want to personally thank you for your support of this Conference. As you know, in the interest of promoting the presentation of unpublished and frontier-breaking research, Gordon Research …
Date:
September 21, 2004
Creator:
Shand, Richard F.
Object Type:
Article
System:
The UNT Digital Library
2003 Atomic Physics Gordon Conference - June 15 - 20, 2003
None
Date:
September 9, 2004
Creator:
Walsworth, Ronald L.
Object Type:
Report
System:
The UNT Digital Library
2003 Electronic Spectroscopy and Dynamics - July 6-11, 2003
The Gordon Research Conference (GRC) on 2003 Electronic Spectroscopy and Dynamics - July 6-11, 2003 was held at Bates College, Lewiston, Maine, July 6-11, 2003. The Conference was well-attended with 103 participants (attendees list attached). The attendees represented the spectrum of endeavor in this field coming from academia, industry, and government laboratories, both U.S. and foreign scientists, senior researchers, young investigators, and students. In designing the formal speakers program, emphasis was placed on current unpublished research and discussion of the future target areas in this field. There was a conscious effort to stimulate lively discussion about the key issues in the field today. Time for formal presentations was limited in the interest of group discussions. In order that more scientists could communicate their most recent results, poster presentation time was scheduled. Attached is a copy of the formal schedule and speaker program and the poster program. In addition to these formal interactions, ''free time'' was scheduled to allow informal discussions. Such discussions are fostering new collaborations and joint efforts in the field.
Date:
September 10, 2004
Creator:
Bernstein, Elliot
Object Type:
Article
System:
The UNT Digital Library
2003 Laser Diagnostic in Combustion Conference
The GRC Laser Diagnostics in Combustion aims at bringing together scientists and engineers working in the front edge of research and development to discuss and find new ways to solve problems connected to combustion diagnostics. Laser-based techniques have proven to be very efficient tools for studying combustion processes thanks to features as non-intrusiveness in combination with high spatial and temporal resolution. Major tasks for the community are to develop and apply techniques for quantitative measurements with high precision e.g of species concentrations, temperatures, velocities and particles characteristics (size and concentration). These issues are of global interest, considering that the major part of the World's energy conversion comes from combustion sources and the influence combustion processes have on the environment and society.
Date:
September 10, 2004
Creator:
Allen, Mark G.
Object Type:
Article
System:
The UNT Digital Library
2003 Organometallic Chemistry Gordon Conference to be held July 20-25, 2003
None
Date:
September 10, 2004
Creator:
Bullock, R. Morris
Object Type:
Article
System:
The UNT Digital Library
2003 Plant Cell Walls Gordon Conference
This conference will address recent progress in many aspects of cell wall biology. Molecular, genetic, and genomic approaches are yielding major advances in our understanding of the composition, synthesis, and architecture of plant cell walls and their dynamics during growth, and are identifying the genes that encode the machinery needed to make their biogenesis possible. This meeting will bring together international scientists from academia, industry and government labs to share the latest breakthroughs and perspectives on polysaccharide biosynthesis, wood formation, wall modification, expansion and interaction with other organisms, and genomic & evolutionary analyses of wall-related genes, as well as to discuss recent ''nanotechnological'' advances that take wall analysis to the level of a single cell.
Date:
September 21, 2004
Creator:
Cosgrove, Daniel J.
Object Type:
Article
System:
The UNT Digital Library
2004 Initial Assessments for the T and TX TY Tank Farm Field Investigation Report (FIR): Numerical Simulations
In support of CH2M HILL Hanford Group, Inc.’s (CHG) preparation of a Field Investigative Report (FIR) for the Hanford Site Single-Shell Tank Waste Management Area (WMA) T and TX-TY, a suite of numerical simulations of flow and solute transport was executed using the STOMP code to predict the performance of surface barriers for reducing long-term risks from potential groundwater contamination at the T and TX-TY WMA. The scope and parametric data for these simulations were defined by a modeling data package provided by CHG. This report documents the simulation involving 2-D cross sections through the T Tank and the TX-TY Tank Farm. Eight cases were carried out for the cross sections to simulate the effects of interim barrier, water line leak, inventory distribution, and surface recharge on water flow and the transport of long-lived radionuclides (i.e., technecium-99 and uranium) and chemicals (i.e., nitrate and chromium For simulations with barriers, it is assumed that an interim barrier is in place by the year 2010. It was also assumed that, for all simulations, as part of tank farm closure, a closure barrier was in place by the year 2040. The modeling considers the estimated inventories of contaminants within the vadose zone and …
Date:
September 24, 2004
Creator:
Zhang, Z. F.; Freedman, Vicky L. & Waichler, Scott R.
Object Type:
Report
System:
The UNT Digital Library
2004 Molecular and Ionic Clusters Gordon Conference - September 5-10, 2004
This Report is Gordon Conference Molecular and Ionic Clusters Final Report and Agenda.
Date:
September 5, 2004
Creator:
Zwier, Timoty S.
Object Type:
Article
System:
The UNT Digital Library
2010 Census: Counting Americans Overseas as Part of the Census Would Not Be Feasible
Testimony issued by the Government Accountability Office with an abstract that begins "The U.S. Census Bureau (Bureau) has typically excluded from the census private citizens residing abroad, but included overseas members of the military, federal civilian employees, and their dependents (in the 1990 and 2000 Censuses, these individuals were included in the numbers used for apportioning Congress). The Bureau recently tested the practicality of counting all overseas Americans. GAO was asked to testify on the test's initial results. Our statement is based on our published reports, one of which is being released at today's hearing."
Date:
September 14, 2004
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
9W-12W, 8H and 10H Cell, Rack Pan, and Air Tunnel Inspections for the Safe Deactivation NCSE
The cell, rack pan, Warm Canyon Air Tunnel (WCAT) and Hot Canyon Air Tunnel (HCAT) inspections did not reveal significant deposits or accumulation of fissile material. Nor were there any depressions, except the sumps, that exceeded the limits of 2 inch x 6 inch in 9W-12W or 20 inch x 35 inch in 8H or 10H. After filling the sumps and isolating the liquid sources, the cells, rack pans, and air tunnels meet the requirements for criticality safety as described in the NCSE.
Date:
September 1, 2004
Creator:
EUBANKS, RONNYEA.
Object Type:
Report
System:
The UNT Digital Library
Ab Initio Studies of Coke Formation on Ni Catalysts During Methane Reforming
The atomic-scale processes that control the formation of carbon deposits on Ni catalysts in reforming applications are poorly understood. Ab initio Density Functional Theory calculations have been used to examine several key elementary steps in the complex network of chemical reactions that precedes carbon formation on practical catalysts. Attention has been focused on the disproportionation of CO. A comparative study of this reaction on flat and stepped crystal planes of Ni has provided the first direct evidence that surface carbon formation is driven by elementary reactions occurring at defect sites on Ni catalysts. The adsorption and diffusion of atomic H on several flat and stepped Ni surfaces has also been characterized experimentally.
Date:
September 25, 2004
Creator:
Sholl, David S.
Object Type:
Report
System:
The UNT Digital Library
Abilene Philharmonic Playbill: September 18-October 30, 2004
Program for an Abilene Philharmonic concert that ran from September 18th to October 30th during the 55th season. It includes information about the pieces performed, artists and musicians, and advertising from local companies.
Date:
September 2004
Creator:
Abilene Philharmonic
Object Type:
Pamphlet
System:
The Portal to Texas History
Abstracts for the Workshop on Computational Biology: Focus on Hydrogen, Biomass, and Nanoscience
Computational science stands at the forefront of biological modeling and simulation. The challenges in this field are two-fold. First, biological computational science is obliged to use high-performance computers and advanced visualization to explore ever increasingly complex systems and datasets. Second, validation of theory with experiment is exceptionally critical in this new field. The Computational Sciences Center (CSC) is supporting the NREL Computational Sciences Workshop (NCS 2004) on Computational Biology to facilitate understanding and enhancement of the capabilities of computational science in research as well as the needs of the more traditional methods of scientific investigation, theory and experiment. The workshop aims to bring together researchers from scientific areas studying biological systems to discuss problems and potential solutions, to identify new issues, and to shape future directions for research. There are four technical sessions. Topics include: (1) Simulation and Modeling in Biomass Conversion; (2) Simulation and Modeling in Photobiology; (3) Bioinformatics for Renewable Energy; and (4) Modeling Hard- Soft-Matter Interfaces.
Date:
September 1, 2004
Creator:
Kim, K.; Jones, W.; Himmel, M. & King, P.
Object Type:
Article
System:
The UNT Digital Library
Accounting Reform After Enron: Issues in the 108th Congress
This report discusses the anxieties within Congress in the wake of the Enron scandal. Moreover, the report notes that the 108th Congress is not likely to pass legislative reform as extreme as the 107th Congress, but will still confront issues of accounting reform. The report also highlights what the 108th Congress plans to reform.
Date:
September 15, 2004
Creator:
Jickling, Mark
Object Type:
Report
System:
The UNT Digital Library
Accurate Position Sensing of Defocused Beams Using Simulated Beam Templates
In position detection using matched filtering one is faced with the challenge of determining the best position in the presence of distortions such as defocus and diffraction noise. This work evaluates the performance of simulated defocused images as the template against the real defocused beam. It was found that an amplitude modulated phase-only filter is better equipped to deal with real defocused images that suffer from diffraction noise effects resulting in a textured spot intensity pattern. It is shown that the there is a tradeoff of performance dependent upon the type and size of the defocused image. A novel automated system was developed that can automatically select the right template type and size. Results of this automation for real defocused images are presented.
Date:
September 29, 2004
Creator:
Awwal, A.; Candy, J.; Haynam, C.; Widmayer, C.; Bliss, E. & Burkhart, S.
Object Type:
Article
System:
The UNT Digital Library
Accurate wavelength measurements and modeling of FeXV to FeXIX spectra recorded in high density plasmas between 13.5 to 17 A.
Iron spectra have been recorded from plasmas created at three different laser plasma facilities, the Tor Vergata University laser in Rome (Italy), the Hercules laser at ENEA in Frascati (Italy), and the Compact Multipulse Terawatt (COMET) laser at LLNL in California (USA). The measurements provide a means of identifying dielectronic satellite lines from FeXVI and FeXV in the vicinity of the strong 2p {yields} 3d transitions of FeXVII. About 80 {Delta}n {ge} 1 lines of FeXV (Mg-like) to FeXIX (O-like) were recorded between 13.8 to 17.1 {angstrom} with a high spectral resolution ({lambda}/{Delta}{lambda} {approx} 4000), about thirty of these lines are from FeXVI and FeXV. The laser produced plasmas had electron temperatures between 100 to 500 eV and electron densities between 10{sup 20} to 10{sup 22} cm{sup -3}. The Hebrew University Lawrence Livermore Atomic Code (HULLAC) was used to calculate the atomic structure and atomic rates for FeXV to FeXIX. HULLAC was used to calculate synthetic line intensities at T{sub e} = 200 eV and n{sub e} = 10{sup 21}cm{sup -3} for three different conditions to illustrate the role of opacity: optically thin plasmas with no excitation-autoionization/dielectronic recombination (EA/DR) contributions to the line intensities, optically thin plasmas that included EA/DR …
Date:
September 28, 2004
Creator:
May, M.; Beiersdorfer, P.; Dunn, J.; Jordan, N.; Osterheld, A.; Faenov, A. et al.
Object Type:
Article
System:
The UNT Digital Library