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  • 2005-2009  (603)
  • 1930-1934  (36)
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  • 1
    Call number: 12/M 08.0400
    In: Ecological studies
    Type of Medium: Monograph available for loan
    Pages: XIV, 354 S. , Ill., graph. Darst. , 235 mm x 155 mm
    Edition: [Erweiterte und aktualisierte Version der russ. Ausg. von 1976]
    ISBN: 9783540260868
    Series Statement: Ecological studies 183
    Uniform Title: Rost i struktura godyčnych kolec chvoinych
    Classification: A.3.9.
    Language: English
    Location: Reading room
    Branch Library: GFZ Library
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  • 2
    Description / Table of Contents: This report models the ability of low-carbon industries to grow and transform within a market economy. It finds that runaway climate change is almost inevitable without specific action to implement low-carbon re-industrialisation over the next five years. The point of no return is estimated to be 2014.
    Pages: Online-Ressource (XIV, 142 Seiten)
    ISBN: 9780980434385
    Language: English
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 129 (1932), S. 59-59 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] DR. M. KATALINIĆ has described a method of producing floating drops of clean water on a water surface by delivery from a suitably situated jet.1 Such drops must owe their existence to the stability of the film immediately beneath them, that is, the thickness-coefficient of the ...
    Type of Medium: Electronic Resource
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  • 4
    Publication Date: 2018-02-16
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , NonPeerReviewed
    Format: application/pdf
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  • 5
    Publication Date: 2018-06-02
    Description: An advanced 22-in. scale model turbofan, typical of a current-generation aircraft engine design by GE Aircraft Engines, was tested in NASA Glenn Research Center s 9- by 15- Foot Low-Speed Wind Tunnel to explore the far-field acoustic effects of an increased bypass nozzle area at simulated aircraft speeds of takeoff, approach, and landing. The wind-tunnel-scale model consisted of the bypass stage fan, stators, and nacelle (including the fan exit nozzle) of a typical turbofan. This fan-stage test was part of the NASA Glenn Fan Broadband Source Diagnostic Test, second entry, which acquired aeroacoustic results over a range of test conditions. A baseline nozzle was selected, and the nozzle area was chosen for maximum performance at sea-level conditions. Two additional nozzles were also tested--one with a 5.4-percent increase in nozzle area over the baseline nozzle (sized for design point conditions), corresponding to a 5-percent increase in fan weight flow, and another nozzle with a 10.9-percent increase in nozzle area over the baseline nozzle (sized for maximum weight flow at sea-level conditions), corresponding to a 7.5 percent increase in fan weight flow. Measured acoustic benefits with increased nozzle area were very encouraging, showing overall sound power level reductions of 2 dB or more (left graph) while the stage adiabatic efficiency (right graph) and thrust (final graph) actually increased by several percentage points. These noise-reduction benefits were seen to include both rotor-interaction tones and broadband noise, and were evident throughout the range of measured sideline angles.
    Keywords: Acoustics
    Type: Research and Technology 2004; NASA/TM-2005-213419
    Format: application/pdf
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  • 6
    Publication Date: 2018-06-06
    Description: This document serves as the System Test Approach for the GMAT Project. Preparation for system testing consists of three major stages: 1) The Test Approach sets the scope of system testing, the overall strategy to be adopted, the activities to be completed, the general resources required and the methods and processes to be used to test the release. It also details the activities, dependencies and effort required to conduct the System Test. 2) Test Planning details the activities, dependencies and effort required to conduct the System Test. 3) Test Cases documents the tests to be applied, the data to be processed, the automated testing coverage and the expected results. This document covers the first two of these items, and established the framework used for the GMAT test case development. The test cases themselves exist as separate components, and are managed outside of and concurrently with this System Test Plan.
    Keywords: Computer Programming and Software
    Format: application/pdf
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  • 7
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    In:  CASI
    Publication Date: 2018-06-06
    Description: The General Mission Analysis Tool (GMAT) is a space trajectory optimization and mission analysis system developed by NASA and private industry in the spirit of the NASA Mission. GMAT contains new technology and is a testbed for future technology development. The goal of the GMAT project is to develop new space trajectory optimization and mission design technology by working inclusively with ordinary people, universities, businesses, and other government organizations, and to share that technology in an open and unhindered way. GMAT is a free and open source software system licensed under the NASA Open Source Agreement: free for anyone to use in development of new mission concepts or to improve current missions, freely available in source code form for enhancement or further technology development.
    Keywords: Computer Programming and Software
    Format: application/pdf
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  • 8
    Publication Date: 2018-06-06
    Description: 4The General Mission Analysis Tool (GMAT) is a space trajectory optimization and mission analysis system. This document is a draft of the users guide for the tool. Included in the guide is information about Configuring Objects/Resources, Object Fields: Quick Look-up Tables, and Commands and Events.
    Keywords: Computer Programming and Software
    Format: application/pdf
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  • 9
    Publication Date: 2018-06-06
    Description: This document is based on the "C Style Guide" (SEL-94-003). It contains recommendations for C++ implementations that build on, or in some cases replace, the style described in the C style guide. Style guidelines on any topics that are not covered in this document can be found in the "C Style Guide." An attempt has been made to indicate when these recommendations are just guidelines or suggestions versus when they are more strongly encouraged. Using coding standards makes code easier to read and maintain. General principles that maximize the readability and maintainability of C++ are: (1) Organize classes using encapsulation and information hiding techniques. (2) Enhance readability through the use of indentation and blank lines. (3) Add comments to header files to help users of classes. (4) Add comments to implementation files to help maintainers of classes. (5) Create names that are meaningful and readable.
    Keywords: Computer Programming and Software
    Format: application/pdf
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  • 10
    Publication Date: 2018-06-06
    Description: The Goal of the GMAT project is to develop new space trajectory optimization and mission design technology by working inclusively with ordinary people, universities businesses and other government organizations; and to share that technology in an open and unhindered way. GMAT's a free and open source software system; free for anyone to use in development of new mission concepts or to improve current missions, freely available in source code form for enhancement or future technology development.
    Keywords: Computer Programming and Software
    Format: application/pdf
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