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413 Matching Results
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Electricity: The Road Toward Restructuring
This report talks about Electricity regulation and transmission issues. It also includes the history of the California Electricity Crisis.
Date:
August 10, 2004
Creator:
Abel, Amy
Object Type:
Report
System:
The UNT Digital Library
Pulse length dependence of laser conditioning and bulk damage in KD2PO4
An experimental technique has been developed to measure the damage density {rho}({phi}) variation with fluence from scatter maps of bulk damage sites in plates of KD{sub 2}PO{sub 4} (DKDP) crystals combined with calibrated images of the damaging beam's spatial profile. Unconditioned bulk damage in tripler-cut DKDP crystals has been studied using 351 nm (3 {omega}) light at pulse lengths of 0.055, 0.091, 0.30, 0.86, 2.6, and 10 ns. It is found that there is less scatter due to damage at fixed fluence for longer pulse lengths. The results also show that for all the pulse lengths the scatter due to damage is a strong function of the damaging fluence. It is determined that the pulse length scaling for bulk damage scatter in unconditioned DKDP material varies as {tau}{sup 0.24 {+-} 0.05} over two orders of magnitude of pulse lengths. The effectiveness of 3 {omega} laser conditioning at pulse lengths of 0.055, 0.096, 0.30, 0.86, 3.5, and 23 ns is analyzed in term of damage density {rho}({phi}) at 3 {omega}, 2.6 ns. The 860 ps conditioning to a peak irradiance of 7 GW/cm{sup 2} had the best performance under 3 {omega}, 2.6 ns testing. It is shown that the optimal conditioning …
Date:
November 10, 2004
Creator:
Adams, J. J.; Weiland, T. L.; Stanley, J. R.; Sell, W. D.; Luthi, R. L.; Vickers, J. L. et al.
Object Type:
Article
System:
The UNT Digital Library
Flavor Structure of Warped Extra Dimension Models
We recently showed, in hep-ph/0406101, that warped extra dimensional models with bulk custodial symmetry and few TeV KK masses lead to striking signals at B-factories. In this paper, using a spurion analysis, we systematically study the flavor structure of models that belong to the above class. In particular we find that the profiles of the zero modes, which are similar in all these models, essentially control the underlying flavor structure. This implies that our results are robust and model independent in this class of models. We discuss in detail the origin of the signals in B-physics. We also briefly study other NP signatures that arise in rare K decays (K {yields} {pi}{nu}{nu}), in rare top decays [t {yields} c{gamma}(Z, gluon)] and the possibility of CP asymmetries in D{sup 0} decays to CP eigenstates such as K{sub s}{pi}{sup 0} and others. Finally we demonstrate that with light KK masses, {approx} 3 TeV, the above class of models with anarchic 5D Yukawas has a ''CP problem'' since contributions to the neutron electric dipole moment are roughly 20 times larger than the current experimental bound. Using AdS/CFT correspondence, these extra-dimensional models are dual to a purely 4D strongly coupled conformal Higgs sector thus …
Date:
August 10, 2004
Creator:
Agashe, Kaustubh; Perez, Gilad & Soni, Amarjit
Object Type:
Article
System:
The UNT Digital Library
Timpson & Tenaha News (Timpson, Tex.), Vol. 19, No. 24, Ed. 1 Thursday, June 10, 2004
Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date:
June 10, 2004
Creator:
Alexander, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
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
YUMMY: The Yucca Mountain MCNP-Library
Point-wise libraries provided with the MCNP code contain neutron data for a limited number of temperatures. However, it is important to have the option of using data from a wide range of temperatures for transport calculations. For this purpose, a multi-temperature, ACE-format neutron library was generated for 134 nuclides, as requested by Yucca Mountain Project (YMP) staff. The library is referred to as YUMMY (YUcca Mountain MCNP-librarY). The neutron cross section data are based on ENDF/B-V or ENDF/B-VI evaluations that were requested by YMP staff. This document provides the details of the new library and its use in criticality safety benchmark problems, a Pressurized Water Reactor design and waste package models in MCNP4C.
Date:
December 10, 2004
Creator:
Alpan, FA
Object Type:
Report
System:
The UNT Digital Library
Double-shell target design for the NIF: Noncryogenic ignition and nonlinear mix studies for Stockpile Stewardship
Double-shell ignition is complementary to the baseline approach by virtue of not requiring: (1) cryogenic preparation and fielding, (2) high-contrast pulse-shaping for shock-timing, and (3) demanding x-ray flux symmetry control. The use of simpler low-contrast pulse-shaping potentially allows more benign hohlraum conditions by reducing the risk of laser backscatter. In addition, the associated higher laser fluence threshold for optics damage initiation allows the possibility of more routine high-fluence shots with 2{omega} on the NIF. Based on LDRD-sponsored research in FY01-03 on NIF double-shell ignition target designs, the feasibility of this approach was advanced through both a highly successful implosion campaign on the Omega laser facility and a variety of design improvements for mitigating instability. The double-shell implosion campaign on Omega achieved the important milestone of repeatably demonstrating dominant primary (2.45 MeV) neutron production from the mix-susceptible compressional phase of a double-shell implosion, using fall-line design optimization and exacting fabrication standards. Showing effective control of fuel-pusher mix during final compression is an essential element for achieving ignition. In our studies to control mix by reducing hydrodynamic instability a new pathway for destructive Rayleigh-Taylor growth on the outer surface of the inner shell at ignition scales was identified. However, highly resolved multi-mode …
Date:
February 10, 2004
Creator:
Amendt, P
Object Type:
Report
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 105, No. 282, Ed. 1 Tuesday, February 10, 2004
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 10, 2004
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 105, No. 307, Ed. 1 Wednesday, March 10, 2004
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 10, 2004
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 106, No. 34, Ed. 1 Monday, May 10, 2004
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 10, 2004
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 106, No. 61, Ed. 1 Thursday, June 10, 2004
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 10, 2004
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 106, No. 112, Ed. 1 Tuesday, August 10, 2004
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 10, 2004
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 106, No. 139, Ed. 1 Friday, September 10, 2004
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 10, 2004
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 106, No. 164, Ed. 1 Sunday, October 10, 2004
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 10, 2004
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 106, No. 185, Ed. 1 Wednesday, November 10, 2004
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 10, 2004
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 106, No. 210, Ed. 1 Friday, December 10, 2004
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 10, 2004
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Aging and Rejuvenation with Fractional Derivatives
This article discusses aging rejuvenation with fractional derivatives.
Date:
September 10, 2004
Creator:
Aquino, Gerardo; Bologna, Mauro; Grigolini, Paolo & West, Bruce J.
Object Type:
Article
System:
The UNT Digital Library
Identification of Non-Pertechnetate Species In Hanford Tank Waste, Their Synthesis, Characterization, And Fundamental Chemistry
This proposal had three major goals: (1) develop capillary electrophoresis mass spectrometry as a characterization technique, (2) separate a non-pertechnetate fraction from a waste sample and identify the non-pertechnetate species in it by CEMS, and (3) synthesize and characterize bulk quantities of the identified non-pertechnetate species and study their ligand substitution and redox chemistry.
Date:
December 10, 2004
Creator:
Ashely, Kenneth R.; Schroeder, Norman; Olivares, Jose A. & Scott, Brian
Object Type:
Report
System:
The UNT Digital Library
High Level Waste Lag Storage and Feed Blending
SRTC performed small-scale tests to determine the behavior associated with blending streams in the High-level Waste (HLW) Lag Storage and Feed Blending Process System for the Hanford Waste Treatment and Immobilization Plant (WTP). The work reported here was planned and designed in response to the test specification. The Office of River Protection Hanford Waste Treatment and Immobilization Plant consists of three primary facilities: a Pretreatment Facility and two facilities for low-activity and high-level waste vitrification. The Pretreatment Facility contains unit operations which receive waste feed from the Hanford Tank Farms and separate it into two treated waste streams: a low-activity, liquid waste stream stripped of most solids and radioisotopes (processed through the Low-Activity Waste Vitrification Facility) and a high-level waste slurry containing most of the solids and radioisotopes (processed through the High-Level Waste Vitrification Facility). Blending of the later solids a nd radioisotopes streams and their resulting properties is the subject of this report. These mixtures are shown to be unreactive and pumpable by using statistically designed combinations of nonradioactive simulants for the process streams. Properties of the mixtures are also predicted numerically (with the Environmental Simulation Program) and compared with the experimental results. The results did not reveal any …
Date:
May 10, 2004
Creator:
BARNES, M.J.
Object Type:
Report
System:
The UNT Digital Library
SPIN DEPENDENCE IN ELASTIC SCATTERING IN THE CNI REGION.
The interference of the electromagnetic spin-flip amplitude with a hadronic spin-nonflip amplitude in the elastic scattering of hadrons leads to significant spin dependencies at very low 4-momentum transfer t (0.001 < |t| < 0.01 (GeV/c){sup 2}). This kinematical region is known as the Coulomb Nuclear Interference (CNI) region. First results on spin effects in polarized proton-proton elastic scattering in the CNI region at 100 GeV from the 2004 polarized proton run at RHIC are presented. Preliminary results on A{sub N} in the elastic scattering of polarized protons off a carbon target over a wide energy range from 4 GeV to 100 GeV from AGS and RHIC are presented as well. These results allow us to further investigate the spin dependence in elastic scattering and the mechanisms at work.
Date:
October 10, 2004
Creator:
BRAVAR, A.; MAKDISI, Y. & AL., ET
Object Type:
Article
System:
The UNT Digital Library
On improving linear solver performance: a block variant of GMRES
The increasing gap between processor performance and memory access time warrants the re-examination of data movement in iterative linear solver algorithms. For this reason, we explore and establish the feasibility of modifying a standard iterative linear solver algorithm in a manner that reduces the movement of data through memory. In particular, we present an alternative to the restarted GMRES algorithm for solving a single right-hand side linear system Ax = b based on solving the block linear system AX = B. Algorithm performance, i.e. time to solution, is improved by using the matrix A in operations on groups of vectors. Experimental results demonstrate the importance of implementation choices on data movement as well as the effectiveness of the new method on a variety of problems from different application areas.
Date:
May 10, 2004
Creator:
Baker, A H; Dennis, J M & Jessup, E R
Object Type:
Article
System:
The UNT Digital Library
Visualizations in Hostile Rapid Scan Forensics
None
Date:
May 10, 2004
Creator:
Bartoletti, T
Object Type:
Article
System:
The UNT Digital Library
Appropriations for FY2005: Energy and Water Development
This report is a guide to the Energy and Water Development appropriations bill, including the funding for civil works projects of the Army Corps of Engineers (Corps), the Department of the Interior's Bureau of Reclamation (BOR), most of the Department of Energy (DOE), and a number of independent agencies.
Date:
December 10, 2004
Creator:
Behrens, Carl
Object Type:
Report
System:
The UNT Digital Library
Gordon Research Conference on Quantum Control of Light and Matter - August 3-8, 2003
None
Date:
September 10, 2004
Creator:
Bergmann, Klaas
Object Type:
Article
System:
The UNT Digital Library