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  • Leray-Schauder condition  (1)
  • PHYSICAL SCIENCES  (1)
  • local controllability  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Multiple local solutions to nonlinear control processes (1990)
    Springer
    Journal of optimization theory and applications 67 (1990), S. 463-485 
    Details
    ISSN: 1573-2878
    Keywords: Perturbed linear control processes ; Nielsen fixed-point theory ; local controllability ; Leray-Schauder condition ; retractability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract We use the topological tool of Nielsen fixed-point theory to study the controllability of perturbed linear control processes whose control space can be reduced to a finite-dimensional one. These methods produce a lower bound on the number of controls that achieve a given target. We concentrate particularly on the case where the perturbation has sublinear growth, and we exhibit examples of multiple controls of various types that are detected by the Nielsen theory method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00939645
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Heat-Pipe Array for Large-Area Cooling (1986)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: High rates of heat transfer anticipated. Prototype evaporative cold plate gathers waste heat from equipment mounted on it. Plate made by welding together flanges of several sections of heat pipe. Since plate separates liquid and vapor phases at inlet and outlet ports, eliminates complexities and uncertainties of two-phase flow in zero gravity. On earth, inlet valve enables plate to operate at relatively-large height differences with other plates in same system.
    Keywords: PHYSICAL SCIENCES
    Type: MSC-20946 , NASA Tech Briefs (ISSN 0145-319X); 10; 2; P. 64
    Format: text
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    NASA TECHNICAL REPORTS
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