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  • 1
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    Seismology on a small scale: acoustic emission measurements in rock mechanics (2004)
    In:  Mittlg. d. Dt. Geophys. Ges., Hannover, Polish Geothermal Association, vol. 336, no. I (Sonderband zum Symposium in Memoriam of Prof. Gerhard Müller), pp. 72-78, pp. 1051, (ISSN: 1340-4202)
    Details
    Publication Date: 2004
    Keywords: Seismology ; Acoustic emission ; Rock mechanics ; Laboratory measurements ; Eisenblaetter ; Eisenblatter ; Mueller ; Muller
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
    Electronic Resource
    Electronic Resource
    Limit Cycles of a Planar Vector Field (1997)
    Springer
    Acta applicandae mathematicae 48 (1997), S. 13-32 
    Details
    ISSN: 1572-9036
    Keywords: limit cycles ; vector fields ; oscillation theory ; second-order dynamic systems ; qualitative theory of dynamic systems ; phase portrait ; optimization ; 16th Hilbert Problem
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract This paper presents a solution to the problem to find isolated closed trajectories of two-dimensional dynamic systems. In contrast to the method of Bendixson’s ring regions, the new method is constructive. It allows the determination of the location of closed trajectories and therefore gives an upper bound for their number. The method is based on the idea to use inherent geometrical and physical extremal properties of these trajectories to transform the problem into an optimization task (isoperimetric problem of variational calculus) that can be solved by numerical algorithms, e.g., by hillclimbing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005865019589
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    Paper (German National Licenses)
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