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  • 1990-1994  (2)
  • 1955-1959
  • 1993  (2)
  • Hybrid morphotypes  (1)
  • Rayleigh quotient iteration  (1)
Datenquelle
Materialart
Erscheinungszeitraum
  • 1990-1994  (2)
  • 1955-1959
Jahr
  • 1993  (2)
Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    The Rayleigh quotient method for computing eigenvalue bounds of vibrational systems with interval parameters (1993)
    Springer
    Acta mechanica solida Sinica 6 (1993), S. 309-318 
    Details
    ISSN: 0894-9166
    Schlagwort(e): Rayleigh quotient iteration ; eigenvalue problem ; structure with interval parameters
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau , Physik
    Notizen: Abstract In this paper, an effective method, the Rayleigh quotient iteration, for computing the bounds of structures with interval parameters is presented. When the uncertainty of the structural parameters is described by using the interval, i.e. an unknown-but-bounded version, the structural vibration eigenvalues will become the interval. It is desirable to give these interval eigenvalues. An application of this method is illustrated by a numerical example. The results show that the Rayleigh quotient iteration method is very effective for constructing the upper and lower bounds on the eigenvalues of structures with interval parameters.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02208018
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Chromosome study of hybrid and gynogenetic offspring of artificial crosses between members of the catfish families Clariidae and Pangasiidae (1993)
    Springer
    Environmental biology of fishes 37 (1993), S. 317-322 
    Details
    ISSN: 1573-5133
    Schlagwort(e): Interfamilial hybridization ; Hybrid morphotypes ; Triploid ; Clarias macrocephalus ; Pangasius sutchi ; Fishes
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Synopsis Artificial hybridization between species of the catfish families Clariidae (Clarias macrocephalus) and Pangasiidae (Pangasius sutchi) resulted in first generation offspring comprising two intermediate morphotypes and one morphotype indistinguishable from its clariid parent. The two intermediate morphotypes apparently correspond to hybrid morphotypes 2 and 4 resulting from earlier hybridization experiments between the same parent species (Tarnchalanukit 1986). We did not obtain morphotypes 1 and 3. Chromosome spreads of the relatively pangasiid-like morphotype 2 reveal a diploid number of 57, presumably comprising one set of Clarias (n=27) and one of Pangasius (n=30) chromosomes. The relatively clariid-like morphotype 4 is a triploid with 84 chromosomes, presumably comprising two sets from Clarias (2n=54) and one from Pangasius (n=30). Finally, the morphotype indistinguishable from Clarias, is a diploid with 54 chromosomes, apparently arising from gynogenesis.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00004639
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