Using Direct Sub-Level Entity Access to Improve Nuclear Stockpile Simulation Modeling

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Direct sub-level entity access is a seldom-used technique in discrete-event simulation modeling that addresses the accessibility of sub-level entity information. The technique has significant advantages over more common, alternative modeling methods--especially where hierarchical entity structures are modeled. As such, direct sub-level entity access is often preferable in modeling nuclear stockpile, life-extension issues, an area to which it has not been previously applied. Current nuclear stockpile, life-extension models were demonstrated to benefit greatly from the advantages of direct sub-level entity access. In specific cases, the application of the technique resulted in models that were up to 10 times faster than functionally ... continued below

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Medium: P; Size: 91 pages

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Parker, Robert Y. August 1, 1999.

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Description

Direct sub-level entity access is a seldom-used technique in discrete-event simulation modeling that addresses the accessibility of sub-level entity information. The technique has significant advantages over more common, alternative modeling methods--especially where hierarchical entity structures are modeled. As such, direct sub-level entity access is often preferable in modeling nuclear stockpile, life-extension issues, an area to which it has not been previously applied. Current nuclear stockpile, life-extension models were demonstrated to benefit greatly from the advantages of direct sub-level entity access. In specific cases, the application of the technique resulted in models that were up to 10 times faster than functionally equivalent models where alternative techniques were applied. Furthermore, specific implementations of direct sub-level entity access were observed to be more flexible, efficient, functional, and scalable than corresponding implementations using common modeling techniques. Common modeling techniques (''unbatch/batch'' and ''attribute-copying'') proved inefficient and cumbersome in handling many nuclear stockpile modeling complexities, including multiple weapon sites, true defect analysis, and large numbers of weapon and subsystem types. While significant effort was required to enable direct sub-level entity access in the nuclear stockpile simulation models, the enhancements were worth the effort--resulting in more efficient, more capable, and more informative models that effectively addressed the complexities of the nuclear stockpile.

Physical Description

Medium: P; Size: 91 pages

Notes

OSTI as DE00010598

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  • Other Information: TH: Thesis (M.S.); Submitted to Brigham Young Univ., Dept. of Mechanical Engineering, Provo, UT (US)

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  • Report No.: LA-13625-T
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 10598
  • Archival Resource Key: ark:/67531/metadc621913

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • August 1, 1999

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • March 29, 2016, 3:24 p.m.

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Parker, Robert Y. Using Direct Sub-Level Entity Access to Improve Nuclear Stockpile Simulation Modeling, thesis or dissertation, August 1, 1999; New Mexico. (digital.library.unt.edu/ark:/67531/metadc621913/: accessed November 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.