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9-11 Commission Hearing #7, January 26, 2004, Part 1
Recording of the seventh public hearing held by the National Commission on Terrorist Attacks upon the United States on January 26-27 at the Hart Senate Office Building in Washington, D.C. This hearing specifically addresses the topics of border and aviation security. In addition, several staff statements from the Commission were delivered during the course of the proceedings. This section includes the first staff statement on the entry of the 9/11 hijackers into the United States and the first panel on the border security system prior to September 11, with testimony from Mary A. Ryan and Doris Meissner.
Date:
January 26, 2004
Creator:
National Commission on Terrorist Attacks upon the United States
Object Type:
Video
System:
The UNT Digital Library
9-11 Commission Hearing #7, January 26, 2004, Part 2
Recording of the seventh public hearing held by the National Commission on Terrorist Attacks upon the United States on January 26-27 at the Hart Senate Office Building in Washington, D.C. This hearing specifically addresses the topics of border and aviation security. In addition, several staff statements from the Commission were delivered during the course of the proceedings. This section includes the panel on an incident in Florida with testimony from Jose E. Mendelez-Perez.
Date:
January 26, 2004
Creator:
National Commission on Terrorist Attacks upon the United States
Object Type:
Video
System:
The UNT Digital Library
9-11 Commission Hearing #7, January 26, 2004, Part 3
Recording of the seventh public hearing held by the National Commission on Terrorist Attacks upon the United States on January 26-27 at the Hart Senate Office Building in Washington, D.C. This hearing specifically addresses the topics of border and aviation security. In addition, several staff statements from the Commission were delivered during the course of the proceedings. This section includes the staff statement on three 9/11 hijackers: identification, watchlisting, and tracking, in addition to the third panel on visas and watchlisting today, with testimony from Maura Harty, Russell E. Travers, and Donna A. Buccella.
Date:
January 26, 2004
Creator:
National Commission on Terrorist Attacks upon the United States
Object Type:
Video
System:
The UNT Digital Library
9-11 Commission Hearing #7, January 26, 2004, Part 4
Recording of the seventh public hearing held by the National Commission on Terrorist Attacks upon the United States on January 26-27 at the Hart Senate Office Building in Washington, D.C. This hearing specifically addresses the topics of border and aviation security. In addition, several staff statements from the Commission were delivered during the course of the proceedings. This section includes the fourth panel on the response to September 11 on the borders with testimony from James Ziglar, Robert C. Bonner, and Peter F. Verga.
Date:
January 26, 2004
Creator:
National Commission on Terrorist Attacks upon the United States
Object Type:
Video
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 33, No. 21, Ed. 1 Friday, March 26, 2004
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
March 26, 2004
Creator:
Pound, Jaylynn Christian
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
2003 Chemical Engineering Division annual technical report.
The Chemical Engineering Division is one of six divisions within the Engineering Research Directorate at Argonne National Laboratory, one of the U.S. government's oldest and largest research laboratories. The University of Chicago oversees the laboratory on behalf of the U.S. Department of Energy (DOE). Argonne's mission is to conduct basic scientific research, to operate national scientific facilities, to enhance the nation's energy resources, to promote national security, and to develop better ways to manage environmental problems. Argonne has the further responsibility of strengthening the nation's technology base by developing innovative technology and transferring it to industry. The Division is a diverse early-stage engineering organization, specializing in the treatment of spent nuclear fuel, development of advanced electrochemical power sources, and management of both high- and low-level nuclear wastes. Additionally, the Division operates the Analytical Chemistry Laboratory, which provides a broad range of analytical services to Argonne and other organizations. The Division is multidisciplinary. Its people have formal training in chemistry; physics; materials science; and electrical, mechanical, chemical, and nuclear engineering. They are specialists in electrochemistry, ceramics, metallurgy, catalysis, materials characterization, nuclear magnetic resonance, repository science, and the nuclear fuel cycle. Our staff have experience working in and collaborating with university, industry …
Date:
April 26, 2004
Creator:
Lewis, D.; Graziano, D.; Miller, J. F. & Vandegrift, G.
Object Type:
Report
System:
The UNT Digital Library
Ab initio study of low-energy electron collisions withtertafluoroethene, C2F4
We report the results of variational calculations of elastic electron scattering by tetrafluoroethene, C{sub 2}F{sub 4}, with incident electron energies ranging from 0.5 to 20 eV, using the complex Kohn method and effective core potentials. These are the first fully calculations to reproduce experimental angular differential cross sections at energies below 10 eV. Low-energy electron scattering by C{sub 2}F{sub 4} is sensitive to the inclusion of electronic correlation and target-distortion effects. We therefore present results that describe the dynamic polarization of the target by the incident electron. The calculated cross sections are compared with recent experimental measurements.
Date:
April 26, 2004
Creator:
Trevisan, C. S.; Orel, A. E. & Rescigno, Thomas N.
Object Type:
Article
System:
The UNT Digital Library
Abortion: Legislative Response
The primary focus of this issue brief is legislative action with respect to abortion. However, discussion of those legislative proposals necessarily involves a brief discussion of the leading U.S. Supreme Court decisions concerning a woman’s right to choose whether to terminate her pregnancy. For a more detailed discussion of the relevant case law, see CRS Report 95-724, Abortion Law Development: A Brief Overview.
Date:
October 26, 2004
Creator:
Shimabukuro, Jon O.; Lewis, Karen J. & Ely, Dana
Object Type:
Report
System:
The UNT Digital Library
Active control for turbulent premixed flame simulations
Many turbulent premixed flames of practical interest are statistically stationary. They occur in combustors that have anchoring mechanisms to prevent blow-off and flashback. The stabilization devices often introduce a level of geometric complexity that is prohibitive for detailed computational studies of turbulent flame dynamics. As a result, typical detailed simulations are performed in simplified model configurations such as decaying isotropic turbulence or inflowing turbulence. In these configurations, the turbulence seen by the flame either decays or, in the latter case, increases as the flame accelerates toward the turbulent inflow. This limits the duration of the eddy evolutions experienced by the flame at a given level of turbulent intensity, so that statistically valid observations cannot be made. In this paper, we apply a feedback control to computationally stabilize an otherwise unstable turbulent premixed flame in two dimensions. For the simulations, we specify turbulent in flow conditions and dynamically adjust the integrated fueling rate to control the mean location of the flame in the domain. We outline the numerical procedure, and illustrate the behavior of the control algorithm. We use the simulations to study the propagation and the local chemical variability of turbulent flame chemistry.
Date:
March 26, 2004
Creator:
Bell, John B.; Day, Marcus S.; Grcar, Joseph F. & Lijewski, Michael J.
Object Type:
Article
System:
The UNT Digital Library
Adaptive Sampling for Noisy Problems
The usual approach to deal with noise present in many real-world optimization problems is to take an arbitrary number of samples of the objective function and use the sample average as an estimate of the true objective value. The number of samples is typically chosen arbitrarily and remains constant for the entire optimization process. This paper studies an adaptive sampling technique that varies the number of samples based on the uncertainty of deciding between two individuals. Experiments demonstrate the effect of adaptive sampling on the final solution quality reached by a genetic algorithm and the computational cost required to find the solution. The results suggest that the adaptive technique can effectively eliminate the need to set the sample size a priori, but in many cases it requires high computational costs.
Date:
March 26, 2004
Creator:
Cantu-Paz, E
Object Type:
Article
System:
The UNT Digital Library
Administrative Separations for Misconduct: An Alternative or Companion to Military Courts-Martial
The recent reports of abuse of prisoners held by U.S. military personnel have raised questions about how the armed forces control servicemembers. Congress, under the authorities vested in it by the U.S. Constitution, has enacted procedures for addressing misconduct by servicemembers. One such procedure is an administrative separation under which a member’s continued suitability for service is determined. Administrative separations are non-punitive and can be initiated for a number of reasons, including misconduct or criminal offenses. They may be used in place of or after the servicemember has been subject to a court-martial or nonjudicial punishment. This report provides an overview of administrative separations as an alternative or companion to courts-martial.
Date:
May 26, 2004
Creator:
Velez Pollack, Estela I.
Object Type:
Report
System:
The UNT Digital Library
Advanced Hydrogen Transport Membranes for Vision 21 Fossil Fuel Plants
During this quarter, work was focused on testing layered composite membranes under varying feed stream flow rates at high pressure. By optimizing conditions, H{sub 2} permeation rates as high as 423 mL {center_dot} min{sup -1} {center_dot} cm{sup -2} at 440 C were measured. Membrane stability was investigated by comparison to composite alloy membranes. Permeation of alloyed membranes showed a strong dependence on the alloying element. Impedance analysis was used to investigate bulk and grain boundary conductivity in cermets. Thin film cermet deposition procedures were developed, hydrogen dissociation catalysts were evaluated, and hydrogen separation unit scale-up issues were addressed.
Date:
July 26, 2004
Creator:
Evenson, Carl R.; Sammells, Anthony F.; Mackay, Richard; Treglio, Richard; Rolfe, Sara L.; Blair, Richard et al.
Object Type:
Report
System:
The UNT Digital Library
Advanced Hydrogen Transport Membranes for Vision 21 Fossil Fuel Plants
During this quarter, work was focused on testing layered composite membranes under varying feed stream flow rates at high pressure. By optimizing conditions, H{sub 2} permeation rates in excess of 400 mL {center_dot} min{sup -1} {center_dot} cm{sup -2} at 440 C were measured. Membrane stability was characterized by repeated thermal and pressure cycling. The effect of cermet grain size on permeation was determined. Finally, progress is summarized on thin film cermet fabrication, catalyst development, and H{sub 2} separation unit scale up.
Date:
April 26, 2004
Creator:
Evenson, Carl R.; Sammells, Anthony F.; Mackay, Richard; Morrison, Scott R.; Rolfe, Sara L.; Blair, Richard et al.
Object Type:
Report
System:
The UNT Digital Library
African Science and Western Spirits
Lecture given Saturday, June 26, 2004 at Abilene Christian University: "Based on their experiences in Africa, John and Sara will explore cultural issues and themes. They will consider what other cultures and people can teach us about our world and about the kingdom of God."
Date:
June 26, 2004
Creator:
Barton, John & Barton, Sara
Object Type:
Sound
System:
The Portal to Texas History
African Wealth and Western Poverty
Lecture given Saturday, June 26, 2004 at Abilene Christian University: "Based on their experiences in Africa, John and Sara will explore cultural issues and themes. They will consider what other cultures and people can teach us about our world and about the kingdom of God."
Date:
June 26, 2004
Creator:
Barton, John & Barton, Sara
Object Type:
Sound
System:
The Portal to Texas History
Agriculture as a Source of Barge Demand on the Upper Mississippi and Illinois Rivers: Background and Issues
This report provides background on the linkage between U.S. agriculture and the UMR-IWW navigation system. In addition, it explores several of the key issues and uncertainties behind evolving trade patterns and projections for future agricultural freight traffic on the UMR-IWW navigation system.
Date:
May 26, 2004
Creator:
Schnepf, Randy
Object Type:
Report
System:
The UNT Digital Library
AIDS in Africa
Sub-Saharan Africa has been far more severely affected by AIDS than any other part of the world. The United Nations reports that 26.6 million adults and children are infected with the HIV virus in the region, which has about 10% of the world's population but more than two-thirds of the worldwide total of infected people. This report discusses this issue in detail, including the cause of the African AIDS epidemic, the social and economic consequences, response and treatment, and U.S. policy.
Date:
April 26, 2004
Creator:
Copson, Raymond W.
Object Type:
Report
System:
The UNT Digital Library
Air Force FB-22 Bomber Concept
The Air Force has expressed interest in developing a bomber variant of the F/A-22 Raptor to “bridge the gap” between today’s bombers and a follow-on bomber in 2037. Questions exist regarding the FB-22’s feasibility, cost, and combat potential.
Date:
May 26, 2004
Creator:
Bolkcom, Christopher
Object Type:
Report
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 128, No. 38, Ed. 1 Thursday, February 26, 2004
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
February 26, 2004
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
The Albany News (Albany, Tex.), Vol. 129, No. 13, Ed. 1 Thursday, August 26, 2004
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
August 26, 2004
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
An algebraic sub-structuring method for large-scale eigenvaluecalculation
We examine sub-structuring methods for solving large-scalegeneralized eigenvalue problems from a purely algebraic point of view. Weuse the term "algebraic sub-structuring" to refer to the process ofapplying matrix reordering and partitioning algorithms to divide a largesparse matrix into smaller submatrices from which a subset of spectralcomponents are extracted and combined to provide approximate solutions tothe original problem. We are interested in the question of which spectralcomponentsone should extract from each sub-structure in order to producean approximate solution to the original problem with a desired level ofaccuracy. Error estimate for the approximation to the small esteigen pairis developed. The estimate leads to a simple heuristic for choosingspectral components (modes) from each sub-structure. The effectiveness ofsuch a heuristic is demonstrated with numerical examples. We show thatalgebraic sub-structuring can be effectively used to solve a generalizedeigenvalue problem arising from the simulation of an acceleratorstructure. One interesting characteristic of this application is that thestiffness matrix produced by a hierarchical vector finite elements schemecontains a null space of large dimension. We present an efficient schemeto deflate this null space in the algebraic sub-structuringprocess.
Date:
May 26, 2004
Creator:
Yang, C.; Gao, W.; Bai, Z.; Li, X.; Lee, L.; Husbands, P. et al.
Object Type:
Article
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 105, No. 269, Ed. 1 Monday, January 26, 2004
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 26, 2004
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 105, No. 296, Ed. 1 Thursday, February 26, 2004
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 26, 2004
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 105, No. 321, Ed. 1 Friday, March 26, 2004
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 26, 2004
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History