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  • 1990-1994  (853)
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  • 1992  (853)
  • 11
    Publication Date: 2013-08-29
    Description: Composite structures have the potential to be cost effective, structurally efficient primary aircraft structures. As part of the Advanced Composite Technology (ACT) program to exploit this potential for heavily loaded aircraft structures, the design and fabrication of the technology integration box beam (TIBB) was completed. The TIBB is an advanced composite prototype structure for the center wing section of the Lockheed C-130 aircraft. The TIBB was tested for downbending, upbending, torsion, and combined upbending and torsion load conditions to verify the design. The TIBB failed at 83 percent of design ultimate load for the combined upbending and torsion load condition. Current analytical and experimental results are described for a study of the mechanisms that led to the failure of the TIBB. Experimental results include load, strain, and deflection data. An analytical study was conducted of the TIBB structural response. Analytical results include strain and deflection results from a global analysis of the TIBB.
    Keywords: COMPOSITE MATERIALS
    Type: Second NASA Advanced Composites Technology Conference; p 99-111
    Format: text
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  • 12
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    IAMSLIC
    Publication Date: 2022-05-25
    Description: pp. 101-109
    Repository Name: Woods Hole Open Access Server
    Type: Article
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  • 13
    Publication Date: 2022-05-25
    Description: Author Posting. © American Institute of Biological Sciences, 2005. This article is posted here by permission of American Institute of Biological Sciences for personal use, not for redistribution. The definitive version was published in BioScience 55 (2005): 501–510, doi:10.1641/0006-3568(2005)055[0501:CIEACM]2.0.CO;2.
    Description: Creative approaches at the interface of ecology, statistics, mathematics, informatics, and computational science are essential for improving our understanding of complex ecological systems. For example, new information technologies, including powerful computers, spatially embedded sensor networks, and Semantic Web tools, are emerging as potentially revolutionary tools for studying ecological phenomena. These technologies can play an important role in developing and testing detailed models that describe real-world systems at multiple scales. Key challenges include choosing the appropriate level of model complexity necessary for understanding biological patterns across space and time, and applying this understanding to solve problems in conservation biology and resource management. Meeting these challenges requires novel statistical and mathematical techniques for distinguishing among alternative ecological theories and hypotheses. Examples from a wide array of research areas in population biology and community ecology highlight the importance of fostering synergistic ties across disciplines for current and future research and application.
    Description: This paper is the result of a National Science Foundation (NSF) workshop on quantitative environmental and integrative biology (DEB-0092081). J. L. G. would like to acknowledge financial support from the NSF (DEB-0107555).
    Keywords: Ecological complexity ; Quantitative conservation biology ; Cyberinfrastructure ; Metadata ; Semantic Web
    Repository Name: Woods Hole Open Access Server
    Type: Article
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  • 14
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    Alfred Wegener Institute for Polar and Marine Research & German Society of Polar Research
    In:  EPIC3Polarforschung, Bremerhaven, Alfred Wegener Institute for Polar and Marine Research & German Society of Polar Research, 74(1-3), pp. 63-75, ISSN: 0032-2490
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: "Polarforschung" , peerRev
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  • 15
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    Woods Hole Oceanographic Institution
    Publication Date: 2022-05-26
    Description: To enhance collaboration between researchers who model upper ocean biological/physical processes, a workshop was held at WHOI on June 7-12, 1993. The workshop was part of our on-going URIP project entitled "Modeling Biological-Physical Interactions: A Population Biological Approach" sponsored by ONR (Grant N000l4-92-J-1527). The two principal goals of the workshop were to: 1) identify critical problems related to mixed-layer biological-physical models, and 2) develop approaches for solving these problems. The workshop was organized into two parts to address these goals. The first part, held over the first day and a half, included three overview presentations given in plenary followed by working groups, organized along disciplinary lines, to identify critical issues. The second part of the workshop consisted of working groups, organized across disciplines, using "hands-on" modeling to address critical aspects of coupled biological-physical models. Several coupled models were presented and/or developed at the workshop addressing specific aspects of both the biological and physical dynamics. These aspects included the different mixed-layer formulations, a structured grazer population model, and an allometric food-web model including microbial-loop dynamics.
    Description: Funding was provided by the University Research Initiative Program and the Office of Naval Research under Grant No. ONR-URIP N00014-92-J-1527.
    Keywords: Biological/physical modeling ; Upper ocean ; Mixed-layer
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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  • 16
    Publication Date: 2022-05-26
    Description: Author Posting. © The Authors, 2004. This is the author's version of the work. It is posted here by permission of Elsevier B. V. for personal use, not for redistribution. The definitive version was published in Deep Sea Research Part II: Topical Studies in Oceanography 52 (2005): 545-564, doi:10.1016/j.dsr2.2004.12.006.
    Description: This study combines float data from different projects collected between 1991 and 2003 in the South Atlantic to describe the flow of Antarctic Intermediate Water (AAIW). Velocity spacetime averages are calculated for various grid resolutions and with cells deformed to match the bathymetry, f/H or f/h (with H being the water depth and h being the thickness of the AAIW layer). When judged by the degree of alignment between respective isolines and the resulting average velocity fields, the best grid is based on a nominal cell size of 3º (latitude) by 4º (longitude) with cell shapes deformed according to f/h. Using this grid, objectively estimated mean currents (and their associated errors), as well as meridional and zonal volume transports are estimated. Results show an anticyclonic Subtropical Gyre centred near 36ºS and spanning from 23º±1°S to 46° ± 1ºS. The South Atlantic Current meanders from 33ºS to 46ºS and shows a mean speed of 9.6 ± 7.8 cm s-1 (8.5 Sv ± 3.5 Sv; 1 Sv = 1×106 m3 s-1). The northern branch of the Subtropical Gyre is located between 22ºS and 32ºS and flows westward with a mean speed of 4.7 ± 3.3 cm s-1 (9.3 Sv ± 3.4 Sv). Evidence of a cyclonic Tropical Gyre divided in two sub-cells is visible on the stream function.
    Description: This work is supported through NSF-Grant no. OCE-0095647 and through the Alfred Wegener Institute for Polar and Marine Research.
    Keywords: Antarctic Intermediate Water (AAIW) ; Floats ; Neutral density surfaces ; South Atlantic ; Lagrangian circulation ; Transports ; Objective analysis
    Repository Name: Woods Hole Open Access Server
    Type: Preprint
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  • 17
    Publication Date: 2020-02-12
    Type: info:eu-repo/semantics/article
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  • 18
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    In:  Remote sensing of human settlements | Manual of remote sensing ; v. 5
    Publication Date: 2020-02-12
    Keywords: 550 - Earth sciences
    Type: info:eu-repo/semantics/bookPart
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  • 19
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 20
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Biochemistry 31 (1992), S. 9355-9363 
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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