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  • 1
    Electronic Resource
    Electronic Resource
    Exstrophy of the urorectal septum —report of two cases and embryological review (1992)
    Springer
    Pediatric surgery international 7 (1992), S. 311-313 
    Details
    ISSN: 1437-9813
    Keywords: Exstrophy ; Urorectalseptum ; Unusualcongenital malformation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract For the first time two cases of an unusual congenital malformation are described. Both patients had an isolated defect at the median raphe covered by colonic mucosa extending from a hypospadiac urethral orifice to the anal orifice. After a thorough review of the embryology, the authors designate this anomaly as exstrophy of the urorectal septum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00183992
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Stabilization of a class of hybrid systems arising in flexible spacecraft (1986)
    Springer
    Journal of optimization theory and applications 50 (1986), S. 83-108 
    Details
    ISSN: 1573-2878
    Keywords: Flexible spacecraft ; dynamic modelling ; coupled systems of ordinary and partial differential equations ; system stabilization ; Lyapunov's functionals ; feedback control
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract We consider the problem of rigorous modelling of flexible spacecraft and their stabilization. It is shown that the dynamics of the flexible spacecraft can be described by a coupled system of ordinary differential equations and partial differential equations (hybrid system). Lyapunov's approach is used to prove the stabilizability of the system. Simple feedback controls are suggested for stabilization of flexible spacecraft.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00938479
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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