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Saudi Arabia: Current Issues and U.S. Relations
This report includes information regarding current issues in Saudi Arabia, background to Saudi-U.S. relations, and congressional interest in Saudi Arabia
Date:
November 8, 2004
Creator:
Prados, Alfred B.
Object Type:
Report
System:
The UNT Digital Library
Formulation of the Linear Response Theory in Relativistic LAPW Method. Calculation of Forces in Alpha-Pu
Linear-response (LR) theory in combination with the first-principles band structure codes allows to calculate phonons in an efficient way. In this report a formalism which enables us to apply LR theory within an all-electron framework utilizing the relativistic full-potential linearized augmented plane-wave (RFLAPW) method is presented. As first part, the equations for the calculations of the atomic forces are given and they are used for the calculation of forces in {alpha}-Pu. As a second step, a complete set of formulaes for the dynamic matrices calculation is presented.
Date:
January 8, 2004
Creator:
Kutepov, A L
Object Type:
Report
System:
The UNT Digital Library
Appropriations for FY2005: Department of Homeland Security
This report describes the FY2005 appropriations for the Department of Homeland Security (DHS). The report includes tables that compare the FY2004 appropriations for the programs and activities of DHS, the President's FY2005 request, the congressional response to the request, and the amounts enacted for FY2005.
Date:
November 8, 2004
Creator:
Lake, Jennifer E. & Nuñez-Neto, Blas
Object Type:
Report
System:
The UNT Digital Library
Environmental Provisions in Surface Transportation Reauthorization Legislation: SAFETEA (S. 1072) and TEA-LU (H.R. 3550)
None
Date:
September 8, 2004
Creator:
Luther, Linda G.
Object Type:
Report
System:
The UNT Digital Library
Walker v. Cheney: District Court Decision and Related Statutory and Constitutional Issues
None
Date:
March 8, 2004
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Probability Density Function for Waves Propagating in a Straight PEC Rough Wall Tunnel
The probability density function for wave propagating in a straight perfect electrical conductor (PEC) rough wall tunnel is deduced from the mathematical models of the random electromagnetic fields. The field propagating in caves or tunnels is a complex-valued Gaussian random processing by the Central Limit Theorem. The probability density function for single modal field amplitude in such structure is Ricean. Since both expected value and standard deviation of this field depend only on radial position, the probability density function, which gives what is the power distribution, is a radially dependent function. The radio channel places fundamental limitations on the performance of wireless communication systems in tunnels and caves. The transmission path between the transmitter and receiver can vary from a simple direct line of sight to one that is severely obstructed by rough walls and corners. Unlike wired channels that are stationary and predictable, radio channels can be extremely random and difficult to analyze. In fact, modeling the radio channel has historically been one of the more challenging parts of any radio system design; this is often done using statistical methods. In this contribution, we present the most important statistic property, the field probability density function, of wave propagating in …
Date:
November 8, 2004
Creator:
Pao, H
Object Type:
Article
System:
The UNT Digital Library
Child Welfare: Implementation of the Adoption and Safe Families Act
This report provides an overview of the implementation of adoption and safe families act on child welfare.
Date:
November 8, 2004
Creator:
Spar, Karen & Shuman, Matthew
Object Type:
Report
System:
The UNT Digital Library
Numerical Modeling of Nonlinear Thermodynamics in SMA Wires
We present a mathematical model describing the thermodynamic behavior of shape memory alloy wires, as well as a computational technique to solve the resulting system of partial differential equations. The model consists of conservation equations based on a new Helmholtz free energy potential. The computational technique introduces a viscosity-based continuation method, which allows the model to handle dynamic applications where the temporally local behavior of solutions is desired. Computational experiments document that this combination of modeling and solution techniques appropriately predicts the thermally- and stress-induced martensitic phase transitions, as well as the hysteretic behavior and production of latent heat associated with such materials.
Date:
January 8, 2004
Creator:
Reynolds, D R & Kloucek, P
Object Type:
Article
System:
The UNT Digital Library
A Comparison of Inexact Newton and Coordinate Descent Meshoptimization Technqiues
We compare inexact Newton and coordinate descent methods for optimizing the quality of a mesh by repositioning the vertices, where quality is measured by the harmonic mean of the mean-ratio metric. The effects of problem size, element size heterogeneity, and various vertex displacement schemes on the performance of these algorithms are assessed for a series of tetrahedral meshes.
Date:
July 8, 2004
Creator:
Diachin, L F; Knupp, P; Munson, T & Shontz, S
Object Type:
Article
System:
The UNT Digital Library
Requirements for Linguists in Government Agencies
None
Date:
October 8, 2004
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
SEISMIC DATA FOR NUCLEAR EXPLOSION MONITORING IN THE ARABIAN PENINSULA
We report results from the third and final year of our project (ROA0101-35) to collect seismic event and waveform data recorded in and around the Arabian Peninsula. This effort involves several elements. We are working with King Abdulaziz City for Science and Technology to collect data from the Saudi National Seismic Network, that consists of 38 digital three-component stations (27 broadband and 11 short-period). We have an ongoing collaboration with the Kuwait Institute for Scientific Research, which runs the eight station Kuwait National Seismic Network. We installed two temporary broadband stations in the United Arab Emirates (funded by NNSA NA-24 Office of Non-Proliferation & International Security). In this paper we present a summary of data collected under these efforts including integration of the raw data into LLNL's Seismic Research Database and preliminary analysis of souce parameters and earth structure.
Date:
July 8, 2004
Creator:
Rodgers, A. & Al-Amri, A.
Object Type:
Article
System:
The UNT Digital Library
Amendment Process in the Committee of the Whole
This report describes the amendment process in the Committee of the Whole, including reading for an amendment, debating, amendment trees, and voting.
Date:
December 8, 2004
Creator:
Schneider, Judy
Object Type:
Report
System:
The UNT Digital Library
No-Core Shell Model Calculations in Light Nuclei with Three-Nucleon Forces
The ab initio No-Core Shell Model (NCSM) has recently been expanded to include nucleon-nucleon (NN) and three-nucleon (3N) interactions at the three-body cluster level. Here it is used to predict binding energies and spectra of p-shell nuclei based on realistic NN and 3N interactions. It is shown that 3N force (3NF) properties can be studied in these nuclear systems. First results show that interactions based on chiral perturbation theory lead to a realistic description of {sup 6}Li.
Date:
January 8, 2004
Creator:
Barrett, B R; Vary, J P; Nogga, A; Navratil, P & Ormand, W E
Object Type:
Article
System:
The UNT Digital Library
U.S.-European Union Trade Relations: Issues and Policy Challenges
This report includes information regarding issues and policy challenges with U.S.-European trade relations. Growing strains, resolving longstanding disputes, and strengthening the multilateral trading system are among topics discussed in this report.
Date:
June 8, 2004
Creator:
Ahearn, Raymond J.
Object Type:
Report
System:
The UNT Digital Library
LLNL Experimental Results on OMEGA: FY'04
Lawrence Livermore National Laboratory (LLNL) conducted approximately 360 shots on Omega in FY04. Approximately half of the shots were devoted to ICF-relevant experiments. These are summarized as follows:
Date:
September 8, 2004
Creator:
Turner, R E
Object Type:
Report
System:
The UNT Digital Library
Fracture Permeability Evolution in Rock from the Desert Peak EGS Site
Fluid flow experiments are being conducted on core specimens of quartz monzonite retrieved from depths of about 1 km at the Desert Peak East EGS site in Churchill County, Nevada. Our immediate goal is to observe permeability evolution in fractures at pressure and temperature conditions appropriate to the Desert Peak geothermal site. Longer term, we aim to evaluate mechanisms that control the evolution of fracture permeability. In the experiments saline water is flowed through an artificial fracture at a constant rate of 0.02 ml/min over a period of several weeks. The constant flow tests are interrupted at selected times for shorter tests in which flow is either stopped or varied between 0 and 2.0 ml/min. The experiments to date were conducted at a confining pressure of 5.5 MPa, pore pressures of 1.38 MPa or 2.07 MPa and temperatures of 167- 169 C. Measurements include differential pressure and electrical resistance across the specimen. The short-term variable flow rate experiments allow us to calculate the effective hydraulic aperture of the fracture at various times during the experiment. Changes in electrical resistivity provide indirect evidence of ongoing mineral dissolution and precipitation processes that are expected to change fracture permeability over time. The early …
Date:
April 8, 2004
Creator:
Carlson, S. R.; Roberts, J. J.; Detwiler, R. L.; Burton, E. A.; Robertson-Tait, A.; Morris, C. et al.
Object Type:
Article
System:
The UNT Digital Library
Laboratory Measurements of Velocity and Attenuation in Sediments
Laboratory measurements are required to establish relationships between the physical properties of unconsolidated sediments and P- and S-wave propagation through them. Previous work has either focused on measurements of compressional wave properties at depths greater than 500 m for oil industry applications or on measurements of dynamic shear properties at pressures corresponding to depths of less than 50 m for geotechnical applications. Therefore, the effects of lithology, fluid saturation, and compaction on impedance and P- and S-wave velocities of shallow soils are largely unknown. We describe two state-of-the-art laboratory experiments. One setup allows us to measure ultrasonic P-wave velocities at very low pressures in unconsolidated sediments (up to 0.1 MPa). The other experiment allows P- and S-wave velocity measurements at low to medium pressures (up to 20 MPa). We summarize the main velocity and attenuation results on sands and sand - clay mixtures under partially saturated and fully saturated conditions in two ranges of pressures (0 - 0.1 MPa and 0.1 - 20 MPa) representative of the top few meters and the top 1 km, respectively. Under hydrostatic pressures of 0.1 to 20 MPa, our measurements demonstrate a P- and S-wave velocity-dependence in dry sands around a fourth root (0.23 …
Date:
June 8, 2004
Creator:
Zimmer, M A; Berge, P A; Bonner, B P & Prasad, M
Object Type:
Article
System:
The UNT Digital Library
[Clipping: Church-politics bill goes to House]
Clipping of an article from The Dallas Morning News about a proposal to give churches that mix religious and political activity reduced fines but keep their tax-exempt status under a provision in a corporate tax bill.
Date:
June 8, 2004
Creator:
unknown
Object Type:
Clipping
System:
The UNT Digital Library
[Letter from Philip A. Berkebile to Donnis Baggett, September 8, 2004]
Letter from Philip A. Berkebile to Donnis Baggett on September 8, 2004 with the subject 2004 board Elections. The letter states that it is that time again for the TDNA board of directors nomination process to elect new members for the committee. Enclosed in the letter to Baggett are the election timetable and information needed to make the nomination decisions.
Date:
September 8, 2004
Creator:
Berkebile, Philip A.
Object Type:
Letter
System:
The UNT Digital Library
[Email from Joyce Schones]
Email from Joyce Schones to multiple recipients on June 8, 2004, asking members to support Kathy Bannon, who is running for the State Democratic Executive Committee as the female representative from Senate District 8.
Date:
June 8, 2004
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 128, No. 44, Ed. 1 Thursday, April 8, 2004
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
April 8, 2004
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
The Albany News (Albany, Tex.), Vol. 128, No. 31, Ed. 1 Thursday, January 8, 2004
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
January 8, 2004
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
What can we learn from neutrinoless double beta decay experiments?
We assess how well next generation neutrinoless double beta decay and normal neutrino beta decay experiments can answer four fundamental questions. 1) If neutrinoless double beta decay searches do not detect a signal, and if the spectrum is known to be inverted hierarchy, can we conclude that neutrinos are Dirac particles? 2) If neutrinoless double beta decay searches are negative and a next generation ordinary beta decay experiment detects the neutrino mass scale, can we conclude that neutrinos are Dirac particles? 3) If neutrinoless double beta decay is observed with a large neutrino mass element, what is the total mass in neutrinos? 4) If neutrinoless double beta decay is observed but next generation beta decay searches for a neutrino mass only set a mass upper limit, can we establish whether the mass hierarchy is normal or inverted? We base our answers on the expected performance of next generation neutrinoless double beta decay experiments and on simulations of the accuracy of calculations of nuclear matrix elements.
Date:
April 8, 2004
Creator:
Bahcall, John N.; Murayama, Hitoshi & Pena-Garay, Carlos
Object Type:
Article
System:
The UNT Digital Library
Study of Dark Matter inspired cMSSM scenarios at a TeV-class Linear Collider
The accuracy in the measurement of the masses of sleptons and heavy Higgs bosons in cMSSM scenarios, compatible with the WMAP result on cold dark matter, has been re-analysed in view of the requirements for predicting this density to a few percent level from SUSY measurements at the linear collider.
Date:
October 8, 2004
Creator:
Battaglia, Marco
Object Type:
Article
System:
The UNT Digital Library