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Sökning: swepub > (1990-1994) > (1990) > Konferensbidrag

  • Resultat 1-10 av 593
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  • Gunnarsson, Svante, et al. (författare)
  • Some asymptotic results in recursive identification using Laguerre models
  • 1990
  • Ingår i: Proceedings of the IEEE Conference on Decision and Control. - Honolulu, HI, USA : Linköping University. ; , s. 1068-1073
  • Konferensbidrag (refereegranskat)abstract
    • Frequency domain expressions for the quality of recursively identified Laguerre models are presented. These models generalize finite impulse response (FIR) models by using a priori information about the dominating time constants of the system to be identified. Expressions for the model quality are derived under the assumptions that the system varies slowly, that the model is updated slowly, and that the model order is high. The model quality is evaluated by investigating the properties of the estimated transfer function, and explicit expressions for the mean square error (MSE) of the transfer function, and explicit expressions for the mean square error of the transfer function estimate are derived.
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  • Klein, Inger, et al. (författare)
  • Planning in Polynomial Time
  • 1990
  • Ingår i: Porceedings of the 1990 International Workshop on Expert Systems in Engineering, Principles and Applications. - Berlin, Heidelberg : Springer Berlin Heidelberg. - 9783540467113 ; , s. 103--118, s. 125-129
  • Konferensbidrag (refereegranskat)abstract
    • This paper describes a polynomial-time, O(n3), planning algorithm for a limited class of planning problems. Compared to previous work on complexity of algorithms for knowledge-based or logic-based planning, our algorithm achieves computational tractability, but at the expense of only applying to a significantly more limited class of problems. Our algorithm is proven correct and complete, and it always returns a minimal plan if there is a plan at all.
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  • Ottersten, Björn, 1961-, et al. (författare)
  • Asymptotic Robustness of Sensor Arrary Processing Methods
  • 1990
  • Ingår i: Proceedings of the 1990 International Conference on Acoustics, Speech and Signal Processing. - Linköping : IEEE Signal Processing Society. ; , s. 2635-2638
  • Konferensbidrag (refereegranskat)abstract
    • Methods for estimating the parameters of narrowband signals arriving at an array of sensors are analyzed. Asymptotic results for several estimators have recently appeared in the literature. With few exceptions, the previous analysis requires the incident signal waveforms to be Gaussian random variables. These results are shown to be valid under much more general conditions, i.e. the actual distribution of the signal waveforms does not affect the asymptotic properties of the parameter.
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6.
  • Andersson, Britt M., et al. (författare)
  • Electrical resistivity and critical temperature of Bi-based high-Tc superconductors to 1 GPa
  • 1990
  • Ingår i: High Pressure Research, volumes 3 to 5. - London : Gordon and Breach. - 2881247466 ; 3:1-6, s. 120-122
  • Konferensbidrag (refereegranskat)abstract
    • We have measured the electrical resistance R of a sintered, two-phase, high-TC superconductor with the nominal composition BiSrCaCu2Ox, as a function of T and p. We find d(lnR)/dp ≃ -0.06 GPa-1 at 295 K, while dTC/dp is 2.5 K/GPa for the phase with Tc ≃ 76 and 2 K/GPa for that with TC ≃ 106 K.
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  • Andersson, Britt M., et al. (författare)
  • High-pressure properties of high-Tc superconductor samples produced by hot isostatic pressing
  • 1990
  • Ingår i: High Pressure Research, volumes 3 to 5. - London : Gordon and Breach. - 2881247466 ; 3:1-6, s. 123-125
  • Konferensbidrag (refereegranskat)abstract
    • The electrical resistance of dense YBa2Cu3Ox and YBa2Cu4Oy produced by hot isostatic pressing has been measured vs. T and p. At 295 K we find d (ln R)/dp ≃ -0.12 and -0.09 GPa-1, respectively, with no systematic dependence on initial density. For 1-2-4, dTC/dp ≃ 5.1 K/GPa, which is ten times that of 1-2-3.
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