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Software Systems: Consequence versus Functionality
The purpose of this panel is to present different perspectives and opinions regarding the issues surrounding why software should or shouldn't be entrusted with critical (high consequence) functionality.
Date:
August 5, 1999
Creator:
Berg, Ray & Winter, Victor L.
Object Type:
Article
System:
The UNT Digital Library
Transformation as a Design Process and Runtime Architecture for High Integrity Software
We have discussed two aspects of creating high integrity software that greatly benefit from the availability of transformation technology, which in this case is manifest by the requirement for a sophisticated backtracking parser. First, because of the potential for correctly manipulating programs via small changes, an automated non-procedural transformation system can be a valuable tool for constructing high assurance software. Second, modeling the processing of translating data into information as a, perhaps, context-dependent grammar leads to an efficient, compact implementation. From a practical perspective, the transformation process should begin in the domain language in which a problem is initially expressed. Thus in order for a transformation system to be practical it must be flexible with respect to domain-specific languages. We have argued that transformation applied to specification results in a highly reliable system. We also attempted to briefly demonstrate that transformation technology applied to the runtime environment will result in a safe and secure system. We thus believe that the sophisticated multi-lookahead backtracking parsing technology is central to the task of being in a position to demonstrate the existence of HIS.
Date:
April 5, 1999
Creator:
Bespalko, Stephen J. & Winter, Victor L.
Object Type:
Article
System:
The UNT Digital Library
Hanford Site pollution prevention progress report
The Richland Operations Office (RL) and Office of River Protection (ORP) are pleased to issue the attached Pollution Prevention Progress Report. We have just met the most aggressive waste reduction and A recycling goals to date and are publishing this report to recognize A the site's progress, and to ensure it will sustain success beyond 1 Fiscal Year 2000. This report was designed to inform the been made by RL and ORP in Waste Minimization (WMin) and Pollution Prevention (P2). RL, ORP and their contractors are committed to protecting the environment, and we reiterate pollution prevention should continue to be at the forefront of the environmental cleanup and research efforts. As you read the attached report, we believe you will see a clear demonstration of RL and ORP's outstanding performance as it has been responsible and accountable to the nation, its employees, and the community in which we live and work. commitment that all employees have for environmental stewardship. The report provides useful information about the U.S. Department of Energy's (DOE'S) environmental policy and programs, and contains countless examples of waste minimization projects. This year was the first year our site received the White House Closing the Circle in the …
Date:
October 5, 1999
Creator:
Betsch, M. D.
Object Type:
Report
System:
The UNT Digital Library
The NLC Injector System
The Next Linear Collider (NW) Injector System is designed to produce low emittance, 10 GeV electron and positron beams at 120 hertz for injection into the NLC main linacs. Each beam consists of a train of 9.5 bunches spaced by 2.8 ns; each bunch has a population of 1.15 x 10{sup 10} particles. At injection into the main linacs, the horizontal and vertical emittances are specified to be {gamma}{var_epsilon}{sub x} = 3 x 10{sup -6} m-rad and {gamma}{var_epsilon}{sub y} = 3 x 10{sup -8} m-rad and the bunch length is 100 {micro}m. Electron polarization of greater than 80% is required. Electron and positron beams are generated in separate accelerator complexes each of which contain the source, damping ring systems, L-band, S-band, and X-band linacs, bunch length compressors, and collimation regions. The need for low technical risk, reliable injector subsystems is a major consideration in the design effort. This paper presents an overview of the NLC injector systems.
Date:
November 5, 1999
Creator:
Bharadwaj, V.; Clendenin, J. E.; Emma, P.; Frisch, J.; Jobe, R.; Kotseroglou, T. et al.
Object Type:
Article
System:
The UNT Digital Library
The Harper Herald (Harper, Tex.), Vol. 69, No. 101, Ed. 1 Tuesday, January 5, 1999
Weekly newspaper from Harper, Texas that includes local, state, and national news along with advertising.
Date:
January 5, 1999
Creator:
Bishop, Karen
Object Type:
Newspaper
System:
The Portal to Texas History
The Harper Herald (Harper, Tex.), Vol. 69, No. 123, Ed. 1 Monday, July 5, 1999
Weekly newspaper from Harper, Texas that includes local, state, and national news along with advertising.
Date:
July 5, 1999
Creator:
Bishop, Karen
Object Type:
Newspaper
System:
The Portal to Texas History
The Harper Herald (Harper, Tex.), Vol. 69, No. 136, Ed. 1 Tuesday, October 5, 1999
Weekly newspaper from Harper, Texas that includes local, state, and national news along with advertising.
Date:
October 5, 1999
Creator:
Bishop, Karen
Object Type:
Newspaper
System:
The Portal to Texas History
Dynamic Behavior of Beryllium as a Function of Texture
The high-strain-rate stress-strain responses of commercial hot-pressed beryllium and rolled-sheet beryllium were studied as a function of orientation in compression and room temperature. Hot-pressed beryllium exhibits isotropic mechanical properties; whereas 16:1 rolled sheet was highly anisotropic. Rolled sheet displayed a factor of two difference in strength between the thickness and in-plane (lowest) directions. Twinning is a key deformation mechanism at high rates.
Date:
January 5, 1999
Creator:
Blumenthal, W. R.; Abeln, S. P.; Mataya, M. C.; Gray, G. T., III & Cannon, D. D.
Object Type:
Article
System:
The UNT Digital Library
Transient Model for Keyhole During Laser Welding
A novel approach to simulating the dominant dynamic processes present during concentrated energy beam welding of metals is presented. A model for transient behavior of the front keyhole wall is developed. It is assumed that keyhole propagation is dominated by evaporation recoil-driven melt expulsion from the beam interaction zone. Results from the model show keyhole instabilities consistent with experimental observations of metal welding, metal cutting and ice welding.
Date:
March 5, 1999
Creator:
Bragg, William David; Damkroger, Brian; Kempka, Steven & Semak, Vladimir V.
Object Type:
Article
System:
The UNT Digital Library
The Goldthwaite Eagle (Goldthwaite, Tex.), Vol. 105, No. 2, Ed. 1 Thursday, August 5, 1999
Weekly newspaper from Goldthwaite, Texas that includes local, state, and national news along with extensive advertising.
Date:
August 5, 1999
Creator:
Bridges, G. Frank & Bridges, Georgie
Object Type:
Newspaper
System:
The Portal to Texas History
Perry Daily Journal (Perry, Okla.), Vol. 106, No. 2, Ed. 1 Tuesday, January 5, 1999
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 5, 1999
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Perry Daily Journal (Perry, Okla.), Vol. 106, No. 25, Ed. 1 Friday, February 5, 1999
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 5, 1999
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Perry Daily Journal (Perry, Okla.), Vol. 106, No. 45, Ed. 1 Friday, March 5, 1999
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 5, 1999
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Perry Daily Journal (Perry, Okla.), Vol. 106, No. 66, Ed. 1 Monday, April 5, 1999
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 5, 1999
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Perry Daily Journal (Perry, Okla.), Vol. 106, No. 88, Ed. 1 Wednesday, May 5, 1999
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 5, 1999
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Perry Daily Journal (Perry, Okla.), Vol. 106, No. 152, Ed. 1 Thursday, August 5, 1999
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 5, 1999
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Perry Daily Journal (Perry, Okla.), Vol. 106, No. 193, Ed. 1 Tuesday, October 5, 1999
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 5, 1999
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Perry Daily Journal (Perry, Okla.), Vol. 106, No. 216, Ed. 1 Friday, November 5, 1999
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 5, 1999
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Strain and Texture in Al-Interconnect Wires Measured by X-Ray Microbeam Diffraction
The local strain and texture in Al interconnect wires have been investigated using white and monochromatic x-ray microbeams on the MHATTCAT undulator beam line at the Advanced Photon Source. Intergrain and intragrain orientations were obtained with ~0.01 degree sensitivity using white beam measurements on wide Al pads (~100 Mu-m) and thin (2 Mu-m) Al wires. Orientation changes of up to 1 degree were found within individual grains of the (111) textured Al interconnects. Deviatoric strain measurements indicate small intragranular strain variations, but intergranular strain variations were found to be quite large.
Date:
April 5, 1999
Creator:
Budai, J. D.; Chung, J.-S.; Ice, G. E.; Larson, B. C.; Lowe, W. P.; Tamura, N. et al.
Object Type:
Article
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Friday, February 5, 1999
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 5, 1999
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Express-Star (Chickasha, Okla.), Ed. 1 Friday, March 5, 1999
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 5, 1999
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Express-Star (Chickasha, Okla.), Ed. 1 Friday, November 5, 1999
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 5, 1999
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Express-Star (Chickasha, Okla.), Ed. 1 Monday, April 5, 1999
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 5, 1999
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Express-Star (Chickasha, Okla.), Ed. 1 Monday, July 5, 1999
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
July 5, 1999
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History