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Final Report Auto/Steel Partnership Phase II (open access)

Final Report Auto/Steel Partnership Phase II

This is the final report in which effects of strain-rate, temperature, and stress-state on the yield stress and the strain hardening behavior of many common steels used in automobile construction were investigated. The yield and flow stresses were found to exhibit very high rate sensitivities for most of the steels while the hardening rates were found to be insensitive to strain rate and temperature at lower temperatures or at higher strain rates. This behavior is consistent with the observation that overcoming the intrinsic Peierls stress is shown to be the rate-controlling mechanism in these materials at low temperatures. The dependence of the yield stress on temperature and strain rate was found to decrease while the strain hardening rate increased. The Mechanical Threshold Stress (MTS) model was adopted to model the stress-strain behavior of the steels. Parameters for the constitutive relations were derived for the MTS model and also for the Johnson-Cook (JC) and the Zerilli-Armstrong (ZA) models. The results of this study substantiate the applicability of these models for describing the high strain-rate deformation of these materials. The JC and ZA models, however, due to their use of a power strain hardening law were found to yield constitutive relations for …
Date: June 9, 1999
Creator: Cady, C. M.; Chen, S. R. & Gray, G. T., III
Object Type: Report
System: The UNT Digital Library
LFSRs Do Not Provide Compression (open access)

LFSRs Do Not Provide Compression

We show that for general input sets linear feedback shift registers (LFSRS) do not provide compression comparable to current, standard algorithms, at least not on the current, standard input files. Rather, LFSRS provide performance on a par with simple, run-length encoding schemes. We exercised three different ways of using LFSRS on the Canterbury, Canterbury Oarge set, the Calgory Corpora, and on three, large graphics files of our own.
Date: November 9, 1999
Creator: Campbell, Philip L. & Pierson, Lyndon G.
Object Type: Article
System: The UNT Digital Library
Properties and Performance of Ceramic Composite Components (open access)

Properties and Performance of Ceramic Composite Components

The objective of the Fossil Energy Advanced Research and Technology Development (AR and TD) Materials program is to conduct research and development on materials for longer-term fossil energy applications as well as for generic needs of various fossil fuel technologies. These needs have prompted research aimed toward a better understanding of material behavior in fossil energy environments and the development of new materials capable of substantial enhancement of plant operations, reliability, and efficiency.
Date: August 9, 1999
Creator: Case, S.W.; Halverson, H.G.; Carter, R.H.; Wone, M. & Reifsnider, K.L.
Object Type: Report
System: The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 77, No. 269, Ed. 1 Thursday, September 9, 1999 (open access)

The Baytown Sun (Baytown, Tex.), Vol. 77, No. 269, Ed. 1 Thursday, September 9, 1999

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date: September 9, 1999
Creator: Cash, Wanda Garner
Object Type: Newspaper
System: The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 78, No. 8, Ed. 1 Tuesday, November 9, 1999 (open access)

The Baytown Sun (Baytown, Tex.), Vol. 78, No. 8, Ed. 1 Tuesday, November 9, 1999

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date: November 9, 1999
Creator: Cash, Wanda Garner
Object Type: Newspaper
System: The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 78, No. 34, Ed. 1 Thursday, December 9, 1999 (open access)

The Baytown Sun (Baytown, Tex.), Vol. 78, No. 34, Ed. 1 Thursday, December 9, 1999

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date: December 9, 1999
Creator: Cash, Wanda Garner
Object Type: Newspaper
System: The Portal to Texas History
Four-point correlation functions in the AdS/CFT correspondence. (open access)

Four-point correlation functions in the AdS/CFT correspondence.

We examine correlation functions within the correspondence between gauged supergravity on anti-de Sitter space and N = 4 super Yang-Mills theory in Minkowski space. The imaginary parts of four-point functions in momentum space are computed, in addition to particular examples of three-point functions. Exchange diagrams for gravitons are included. The results indicate additional structure in N = 4 super Yang-Mills theory at strong 't Hooft coupling and in the large N limit.
Date: February 9, 1999
Creator: Chalmers, G. & Schalm, K.
Object Type: Article
System: The UNT Digital Library
Sanitary Landfill Groundwater Monitoring Report - Fourth Quarter 1998 and 1998 Summary (open access)

Sanitary Landfill Groundwater Monitoring Report - Fourth Quarter 1998 and 1998 Summary

A maximum of fifty-three wells of the LFW series monitor groundwater quality in the Steed Pond Aquifer (Water Table) beneath the Sanitary Landfill at the Savannah River Site (SRS). These wells are sampled quarterly to comply with the South Carolina Department of Health and Environmental Control Domestic Water permit and as part of the SRS Groundwater Monitoring Program.
Date: April 9, 1999
Creator: Chase, J.
Object Type: Report
System: The UNT Digital Library
The Boerne Star (Boerne, Tex.), Vol. 94, No. 12, Ed. 1 Tuesday, February 9, 1999 (open access)

The Boerne Star (Boerne, Tex.), Vol. 94, No. 12, Ed. 1 Tuesday, February 9, 1999

Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date: February 9, 1999
Creator: Chionsini, Brandi
Object Type: Newspaper
System: The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 94, No. 20, Ed. 1 Tuesday, March 9, 1999 (open access)

The Boerne Star (Boerne, Tex.), Vol. 94, No. 20, Ed. 1 Tuesday, March 9, 1999

Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date: March 9, 1999
Creator: Chionsini, Brandi
Object Type: Newspaper
System: The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 94, No. 29, Ed. 1 Friday, April 9, 1999 (open access)

The Boerne Star (Boerne, Tex.), Vol. 94, No. 29, Ed. 1 Friday, April 9, 1999

Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date: April 9, 1999
Creator: Chionsini, Brandi
Object Type: Newspaper
System: The Portal to Texas History
The Sealy News (Sealy, Tex.), Vol. 112, No. 56, Ed. 1 Friday, July 9, 1999 (open access)

The Sealy News (Sealy, Tex.), Vol. 112, No. 56, Ed. 1 Friday, July 9, 1999

Semiweekly newspaper from Sealy, Texas that includes local, state, and national news along with advertising.
Date: July 9, 1999
Creator: Chionsini, Brandi
Object Type: Newspaper
System: The Portal to Texas History
The Sealy News (Sealy, Tex.), Vol. 112, No. 91, Ed. 1 Tuesday, November 9, 1999 (open access)

The Sealy News (Sealy, Tex.), Vol. 112, No. 91, Ed. 1 Tuesday, November 9, 1999

Semiweekly newspaper from Sealy, Texas that includes local, state, and national news along with advertising.
Date: November 9, 1999
Creator: Chionsini, Brandi
Object Type: Newspaper
System: The Portal to Texas History
Overview and Status of the Star Detector at Rhic. (open access)

Overview and Status of the Star Detector at Rhic.

Presented here is the current status of the STAR Detector. STAR is one of the four detectors being constructed at the RHIC collider facility. The STAR detector is scheduled to have its first engineering run with the RHIC beams about six months from the date of this conference. The STAR project is on schedule and expects to recomplete on time.
Date: January 9, 1999
Creator: Christie, W. B.
Object Type: Article
System: The UNT Digital Library
Increasing Waterflooding Reservoirs in the Wilmington Oil Field through Improved Reservoir Characterization and Reservoir Management (open access)

Increasing Waterflooding Reservoirs in the Wilmington Oil Field through Improved Reservoir Characterization and Reservoir Management

The objectives of this quarterly report are to summarize the work conducted under each task during the reporting period July - September 1998 and to report all technical data and findings as specified in the ''Federal Assistance Reporting Checklist''. The main objective of this project is the transfer of technologies, methodologies, and findings developed and applied in this project to other operators of Slope and Basin Clastic Reservoirs. This project will study methods to identify sands with high remaining oil saturation and to recomplete existing wells using advanced completion technology.
Date: November 9, 1999
Creator: Clarke, Don; Koerner, Roy; Moos, Dan; Nguyen, John; Phillips, Chris; Tagbor, Kwasi et al.
Object Type: Report
System: The UNT Digital Library
Numerical Tokamak Turbulence Project (open access)

Numerical Tokamak Turbulence Project

The primary research objective of the Numerical Tokamak Turbulence Project (NTTP) is to develop a predictive ability in modeling turbulent transport due to drift-type instabilities in the core of tokamak fusion experiments, through the use of three-dimensional kinetic and fluid simulations and the derivation of reduced models.
Date: December 9, 1999
Creator: Cohen, B.; Dawson, J. M.; Reynders, J. V. W.; Decyk, V. K.; Dorland, W. D.; Hammett, G. W. et al.
Object Type: Report
System: The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 99, No. 283, Ed. 1 Tuesday, February 9, 1999 (open access)

Altus Times (Altus, Okla.), Vol. 99, No. 283, Ed. 1 Tuesday, February 9, 1999

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: February 9, 1999
Creator: Cole, Carol
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 99, No. 307, Ed. 1 Tuesday, March 9, 1999 (open access)

Altus Times (Altus, Okla.), Vol. 99, No. 307, Ed. 1 Tuesday, March 9, 1999

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: March 9, 1999
Creator: Cole, Carol
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 100, No. 21, Ed. 1 Friday, April 9, 1999 (open access)

Altus Times (Altus, Okla.), Vol. 100, No. 21, Ed. 1 Friday, April 9, 1999

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: April 9, 1999
Creator: Cole, Carol
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 100, No. 45, Ed. 1 Sunday, May 9, 1999 (open access)

Altus Times (Altus, Okla.), Vol. 100, No. 45, Ed. 1 Sunday, May 9, 1999

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: May 9, 1999
Creator: Cole, Carol
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 100, No. 69, Ed. 1 Wednesday, June 9, 1999 (open access)

Altus Times (Altus, Okla.), Vol. 100, No. 69, Ed. 1 Wednesday, June 9, 1999

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: June 9, 1999
Creator: Cole, Carol
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 100, No. 95, Ed. 1 Friday, July 9, 1999 (open access)

Altus Times (Altus, Okla.), Vol. 100, No. 95, Ed. 1 Friday, July 9, 1999

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: July 9, 1999
Creator: Cole, Carol
Object Type: Newspaper
System: The Gateway to Oklahoma History
Executive Orders and Proclamations (open access)

Executive Orders and Proclamations

None
Date: March 9, 1999
Creator: Contrubis, John
Object Type: Report
System: The UNT Digital Library
Feasibility of Optimizing Recovery & Reserves from a Mature & Geological Complex Multiple Turbidite Offshore Calif. Reservoir through the Drilling & Completion of a Trilateral Horizontal Well (open access)

Feasibility of Optimizing Recovery & Reserves from a Mature & Geological Complex Multiple Turbidite Offshore Calif. Reservoir through the Drilling & Completion of a Trilateral Horizontal Well

The main objective of this project is to devise an effective redevelopment strategy to combat producibility problems related to the Repetto turbidite sequences of the Carpinteria Field. The lack of adequate reservoir characterization, high-water cut production, and scaling problems have in the past contributed to the field's low productivity. To improve productivity and enhance recoverable reserves, the following specific goals are proposed: (1) Develop an integrated database of all existing data from work done by the former ownership group. (2) Expand reservoir drainage and reduce sand problems through horizontal well drilling and completion. (3) Operate and validate reservoirs' conceptual model by incorporating new data from the proposed trilateral well. (4) Transfer methodologies employed in geologic modeling and drilling multilateral wells to other operators with similar reservoirs.
Date: November 9, 1999
Creator: Coombs, Steven F.
Object Type: Report
System: The UNT Digital Library