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  • Models  (1)
  • Space Transportation  (1)
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  • 2020-2022  (1)
  • 1995-1999  (1)
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  • 1
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    The Empirical Modeling of an Ecosystem (2021)
    In:  http://aquaticcommons.org/id/eprint/2003 | 130 | 2010-12-14 16:47:47 | 2003
    Details
    Publication Date: 2021-07-11
    Description: The authors have endeavored to create a verified a-posteriori model of a planktonic ecosystem. Verification of an empirically derived set of first-order, quadratic differential equations proved elusive due to the sensitivity of the model system to changes in initial conditions. Efforts to verify a similarly derived set of linear differential equations were more encouraging, yielding reasonable behavior for half of the ten ecosystem compartments modeled. The well-behaved species models gave indications as to the rate-controlling processes in the ecosystem.
    Description: UMCES (University of Maryland Center for Environmental Science); Contribution No. 799
    Keywords: Ecology ; Models ; Ecosystems
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 29-40
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    PAPER (OA)
  • 2
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    General Public Space Travel and Tourism (1999)
    In:  CASI
    Details
    Publication Date: 2019-08-14
    Description: The Space Transportation Association and NASA conducted a General Public Space Travel study between 1996 and 1998. During the study, a workshop was held at Georgetown University. Participants included representatives from the travel, aerospace, and construction industries. This report is the proceedings from that workshop. Sections include infrastructure needs, travel packages, policy related issues, and potential near-term activities.
    Keywords: Space Transportation
    Type: NASA/CP-1999-209146/VOL2 , NAS 1.55:209146/VOL2 , M-913/VOL2 , Feb 19, 1997 - Feb 21, 1997; Washington, DC; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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