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  • Controllability  (2)
  • Rhinosporidiosis  (1)
  • bifurcations  (1)
  • damping models  (1)
  • Fisheries
  • Springer  (5)
  • 1990-1994  (5)
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Verlag/Herausgeber
  • Springer  (5)
Erscheinungszeitraum
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  • 1
    Digitale Medien
    Digitale Medien
    Ocular rhinosporidiosis in Tamil Nadu, India (1990)
    Springer
    Mycopathologia 111 (1990), S. 5-8 
    Details
    ISSN: 1573-0832
    Schlagwort(e): Rhinosporidiosis ; ocular ; Tamil Nadu ; India
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract A high incidence of ocular rhinosporidiosis in Kanyakumari district of Tamil Nadu, India is reported. Among the four taluks (sub-division for administration), highest occurrence was found in Agastheeswaram taluk (51.2%) followed by Kalkulam (24.4%), Thovalai (22%) and Vilavancode (2.4%). The disease occurred among both sexes equally and preponderance of a particular sex was not observed. The young adolescents were found to be more susceptible. The disease was found in all socio-economic strata and among all communities and persons belonging to different religious groups. Most of the patients gave a history of bathing in muddy stagnant pools of water.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02277293
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 2
    Digitale Medien
    Digitale Medien
    Asymptotic null controllability of nonlinear perturbed systems (1994)
    Springer
    Journal of optimization theory and applications 83 (1994), S. 167-179 
    Details
    ISSN: 1573-2878
    Schlagwort(e): Controllability ; nonlinear systems ; perturbations
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Mathematik
    Notizen: Abstract In this paper, sufficient conditions are obtained for the asymptotic null controllability of the system $$\dot x(t) = g(t,x(t)) + B(t,x(t))u(t) + f(t,x(t),u(t)).$$ The results are obtained by using the Leray-Schauder fixed-point theorem.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02191767
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 3
    Digitale Medien
    Digitale Medien
    Controllability of nonlinear systems to affine manifolds (1990)
    Springer
    Journal of optimization theory and applications 64 (1990), S. 15-27 
    Details
    ISSN: 1573-2878
    Schlagwort(e): Controllability ; affine manifolds ; Leray-Schauder fixedpoint theorem ; generalized boundary conditions
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Mathematik
    Notizen: Abstract Controllability to an affine manifold involves controlling a system to a target defined by the generalized boundary condition Γx=r, where Γ:C n →R n is a bounded linear operator on the continuous functions, as defined for ordinary differential equations by Kartsatos. In this paper, sufficient conditions are obtained for such controllability for linear systems and for a class of nonlinear perturbations of linear systems.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00940019
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Observations of modal interactions in resonantly forced beam-mass structures (1991)
    Springer
    Nonlinear dynamics 2 (1991), S. 77-117 
    Details
    ISSN: 1573-269X
    Schlagwort(e): Internal resonances ; bifurcations ; quasiperiodic motions ; chaos
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Mathematik
    Notizen: Abstract We present a collection of experimental results on the influence of modal interactions (i.e., internal or autoparametric resonances) on the nonlinear response of flexible metallic and composite structures subjected to a range of resonant excitations. The experimental results are provided in the form of frequency spectra, Poincaré sections, pseudo-phase planes, dimension calculations, and response curves. Experimental observations of transitions from periodic to chaotically modulated motions are also presented. We also discuss relevant analytical results. The current study is also relevant to other internally resonant structural systems.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00053831
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
    Digitale Medien
    Digitale Medien
    Melnikov analysis for a ship with a general roll-damping model (1994)
    Springer
    Nonlinear dynamics 6 (1994), S. 101-124 
    Details
    ISSN: 1573-269X
    Schlagwort(e): Melnikov criterion ; Duffing equation ; ship dynamics ; damping models
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Mathematik
    Notizen: Abstract In the framework of a general roll-damping model, we study the influence of different damping models on the nonlinear roll dynamics of ships through a detailed Melnikov analysis. We introduce the concept of the Melnikov equivalent damping and use phase-plane concepts to obtain simple expressions for what we call the Melnikov damping coefficients. We also study the sensitivity of these coefficients to parameter variations. As an application, we consider the equivalence of the linear-plus-cubic and linear-plus-quadratic damping models, and we derive a condition under which the two models yields the same Melnikov predictions. The free- and forced-oscillation behaviors of the models satisfying this condition are also compared.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00045435
    Standort Signatur Erwartet Verfügbarkeit
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