Numerical and asymptotic studies of complex flow dynamics: Progress report, 12/1/94-12/31/96

Numerical and asymptotic studies of complex flow dynamics: Progress report, 12/1/94-12/31/96

Date: December 31, 1996
Creator: Lorenz, J.
Description: This report summarizes the author`s progress in research and teaching/human resource development during the period December 1, 1994 to December 31, 1996. 9 refs.
Contributing Partner: UNT Libraries Government Documents Department
Hyper-fast interstellar travel via a modification of spacetime geometry

Hyper-fast interstellar travel via a modification of spacetime geometry

Date: August 1, 1997
Creator: Kheyfets, A. & Miller, W.A.
Description: We analyze difficulties with proposals for hyper-fast interstellar travel via modifying the spacetime geometry, using as illustrations the Alcubierre warp drive and the Krasnikov tube. As it is easy to see, no violations of local causality or any other known physical principles are involved as far as motion of spacecrafts is concerned. However, the generation and support of the appropriate spacetime geometry configurations does create problems, the most significant of which are a violation of the weak energy condition, a violation of local causality, and a violation of the global causality protection. The violation of the chronology protection is the most serious of them as it opens a possibility of time travel. We trace the origin of the difficulties to the classical nature of the gravity field. This strongly indicates that hyper-fast interstellar travel should be transferred to the realm of a fully quantized gravitational theory. We outline an approach to further the research in this direction.
Contributing Partner: UNT Libraries Government Documents Department
[Memorandum from Jean Schaake, July 17, 1987]

[Memorandum from Jean Schaake, July 17, 1987]

Date: July 17, 1987
Creator: Schaake, Jean
Description: Memorandum from Jean Schaake to Alan Moore, John Ed Allen, Gerry O'Donovan, Rogers Redding, Walter Sandefur, Bob Stevens, Le Theriot, Blake Dehart, and Ron Arrington, advising them to leave September 15, 1987 open on their calendars, as they are expecting a visit from Julian C. Stanley.
Contributing Partner: Texas Academy of Mathematics and Science
[Memorandum from Tom Preston, May 4, 1987]

[Memorandum from Tom Preston, May 4, 1987]

Date: May 4, 1987
Creator: Preston, Tom
Description: Letter from Tom Preston to John Ed Allen, Frank Kemerer, Gerry O'Donovan, Rogers Redding, Walter Sandefur, Bob Stevens, Le Theriot, and Jean Schaake, on May 4, 1987, asking them to serve on a committee for implementing the curriculum of the Texas Academy of Math and Science.
Contributing Partner: Texas Academy of Mathematics and Science
[Memorandum from Tom Preston, May 4, 1987]

[Memorandum from Tom Preston, May 4, 1987]

Date: May 4, 1987
Creator: Preston, Tom
Description: Memorandum from Tom Preston to John Ed Allen, Frank Kemerer, Gerry O'Donovan, Rogers Redding, Walter Sandefur, Bob Stevens, Le Theriot, and Jean Schaake, on May 4, 1987, asking that they serve on a curriculum committee to implement the Texas Academy of Mathematics and Science.
Contributing Partner: Texas Academy of Mathematics and Science
The workshop on iterative methods for large scale nonlinear problems

The workshop on iterative methods for large scale nonlinear problems

Date: December 1, 1995
Creator: Walker, H.F. & Pernice, M.
Description: The aim of the workshop was to bring together researchers working on large scale applications with numerical specialists of various kinds. Applications that were addressed included reactive flows (combustion and other chemically reacting flows, tokamak modeling), porous media flows, cardiac modeling, chemical vapor deposition, image restoration, macromolecular modeling, and population dynamics. Numerical areas included Newton iterative (truncated Newton) methods, Krylov subspace methods, domain decomposition and other preconditioning methods, large scale optimization and optimal control, and parallel implementations and software. This report offers a brief summary of workshop activities and information about the participants. Interested readers are encouraged to look into an online proceedings available at http://www.usi.utah.edu/logan.proceedings. In this, the material offered here is augmented with hypertext abstracts that include links to locations such as speakers` home pages, PostScript copies of talks and papers, cross-references to related talks, and other information about topics addresses at the workshop.
Contributing Partner: UNT Libraries Government Documents Department
Parent's Education and Children's Test Scores

Parent's Education and Children's Test Scores

Date: April 19, 2012
Creator: Jennings, Garrett & Verrill, Diane
Description: Poster presentation for the 2012 University Scholars Day at the University of North Texas discussing research on correlations between parent's education and children's test scores.
Contributing Partner: UNT Honors College
Least-cost groundwater remediation design using uncertain hydrogeological information. 1998 annual progress report

Least-cost groundwater remediation design using uncertain hydrogeological information. 1998 annual progress report

Date: June 1, 1998
Creator: Pinder, G.F.
Description: 'The objective of the project is to formulate, test, and evaluate a new approach to the least-cost design of groundwater contamination containment and decontamination systems. The proposed methodology employs robust optimization, the outer-approximation method of non-linear programming, and groundwater flow and transport modeling to find the most cost-effective pump-and-treat design possible given the physical parameters describing the groundwater reservoir are known with uncertainty. The result is a methodology that will provide the least-cost groundwater remediation design possible given a specified set of design objectives and physical and sociological constraints. As of the end of the first year of this 3-year project the author has developed and tested the concept of robust optimization within the framework of least-cost groundwater-contamination-containment design. The outer-approximation method has been employed in this context for the relatively simple linear-constraint case associated with the containment problem. In an effort to enhance the efficiency and applicability of this methodology, a new strategy for selecting the various realizations arising out of the Monte-Carlo underpinnings of the robust-optimization technique has been developed and tested. Based upon observations arising out of this work a yet more promising approach has been discovered. The theoretical foundation for this most recent approach has been, ...
Contributing Partner: UNT Libraries Government Documents Department
[Memorandum from Jean Schaake, September 24, 1987]

[Memorandum from Jean Schaake, September 24, 1987]

Date: September 24, 1987
Creator: Schaake, Jean
Description: Memorandum from Jean Schaake to Alan Moore, John Ed Allen, Gerry O'Donovan, Walter Sandefur, Bob Stevens, Bill Deering, Le Theriot, Blake Dehart, Ron Arrington, Patti Gilbert, and Peggy Guthrie, on September 24, 1987, regarding their next meeting. Schaake asks that they come to the meeting with ideas on nomination and selection criteria, math level testing, computer science, enrichment activities, and a speaker program. A paper concerning the nomination and selection of students is included.
Contributing Partner: Texas Academy of Mathematics and Science
Mentoring for minorities in mathematics and science. Final report

Mentoring for minorities in mathematics and science. Final report

Date: May 1, 1998
Creator: Shamma, S.E.
Description: The University of West Florida received a grant from the US Department of Energy to initiate a program on mentoring for Minorities in Mathematics and Science. The purpose of the program was to develop interest of minority freshman and sophomore students in teaching mathematics and science and then have these students act as role models for grade school students, especially for minorities who are experiencing difficulties in science and mathematics education. Fifteen students, one more than what was budgeted, participated in the project.
Contributing Partner: UNT Libraries Government Documents Department
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