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  • Systems Analysis and Operations Research  (2)
  • ACOUSTICS
  • Acoustics
  • Condensed Matter: Electronic Properties, etc.
  • 2015-2019  (4)
  • 2018  (4)
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  • 2015-2019  (4)
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  • 1
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    Experimental Determination of the Topological Phase Diagram in Cerium Monopnictides (2018)
    American Physical Society (APS)
    Details
    Publication Date: 2018-02-22
    Description: Author(s): Kenta Kuroda, M. Ochi, H. S. Suzuki, M. Hirayama, M. Nakayama, R. Noguchi, C. Bareille, S. Akebi, S. Kunisada, T. Muro, M. D. Watson, H. Kitazawa, Y. Haga, T. K. Kim, M. Hoesch, S. Shin, R. Arita, and Takeshi Kondo Experimental determinations of bulk band topology in the solid states have been so far restricted to only indirect investigation through the probing of surface states predicted by electronic structure calculations. We here present an alternative approach to determine the band topology by means of bu... [Phys. Rev. Lett. 120, 086402] Published Wed Feb 21, 2018
    Keywords: Condensed Matter: Electronic Properties, etc.
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society (APS)
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    PAPER CURRENT
  • 2
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    Impedance Eduction for Multisegment Liners (2018)
    In:  CASI
    Details
    Publication Date: 2019-07-20
    Description: This paper explores the validity of an indirect method for impedance eduction of multisegment liners. This is accomplished via results obtained with two uniform liners and one two-segment liner, where each segment is constructed to match the geometry of one of the uniform liners. Each uniform liner is evaluated using direct and indirect impedance eduction methods. An indirect impedance eduction method is used to educe the impedance for each segment of the two-segment liner, and the results are compared with those educed for the uniform liners. These impedance spectra are shown to compare favorably for the majority of test conditions. Poorer comparisons are achieved for those test conditions where one segment of the two-segment liner provides little attenuation. Poor attenuation is a wellknown cause for impedance eduction difficulties. Overall, this multisegment impedance eduction method offers the potential to study complicated liners in a more efficient manner (i.e., without the requirement to build and test separate liners to duplicate each unique segment of the multisegment liner). More detailed studies are required to further validate this tool, and are intended to be the focus of future research.
    Keywords: Acoustics
    Type: NF1676L-28585 , AIAA Aviation Forum; Jun 25, 2018 - Jun 29, 2018; Atlanta, GA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Information Theory Applied to Decision Making Structures (2018)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Decision making structures, such as control boards, process information on many topics as they select options for the system and project. The decisions are based on the information known to the board members and presenters (subject matter experts) and shared at the board during discussion. This information flow through this process can be modelled using information theory. Information theory provides a mathematical basis to understand the flow of information through the decision making process and the information needed for a particular decision. Information theory also provides the mathematical relationships on which to base the optimal decision making structure for a specific system development and organizational structure. Since decision making bodies provide control for the system or project, control theory can be used to construct a decision making model. This provides a starting point for adding cognitive science models. Information processing by each individual board participant can be represented through cognitive processes which are integrated across the board participants through information theory relationship. The set theory view of information theory provides a structure in which to look at the relationships between the participants in a decision making structure.
    Keywords: Systems Analysis and Operations Research
    Type: M18-6672 , Conference on Systems Engineering Research (CSER) 2018; May 08, 2018 - May 09, 2018; Charlottesville, VA; United States
    Format: application/pdf
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  • 4
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    Engineering Elegant Systems: Postulates, Principles, and Hypotheses of Systems Engineering (2018)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: No abstract available
    Keywords: Systems Analysis and Operations Research
    Type: M18-6696 , Annual Conference on System Engineering Research (CSER 2018); May 08, 2018 - May 09, 2018; Charlottsville, VA; United States
    Format: application/pdf
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