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  • Artikel  (4)
  • Entropy  (4)
  • Springer  (4)
  • American Physical Society (APS)
  • Blackwell Publishing Ltd
  • Elsevier
  • 1990-1994  (4)
  • Architektur, Bauingenieurwesen, Vermessung  (4)
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  • Artikel  (4)
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  • Springer  (4)
  • American Physical Society (APS)
  • Blackwell Publishing Ltd
  • Elsevier
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  • 1
    Digitale Medien
    Digitale Medien
    Assessment of reliability in water distribution networks using entropy based measures (1990)
    Springer
    Stochastic environmental research and risk assessment 4 (1990), S. 309-320 
    Details
    ISSN: 1436-3259
    Schlagwort(e): Entropy ; reliability ; redundancy ; water distribution networks ; nodal pair reliability
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Architektur, Bauingenieurwesen, Vermessung , Energietechnik , Geographie , Geologie und Paläontologie
    Notizen: Abstract Entropy based expressions for measurement of reliability and redundancy have recently been reported. These measures approach assessment of the reliability of the distribution network from the intrinsic redundancy of the network layout. The paper extends earlier work on entropy functions by including a more explicit statement of the alternate paths available in the network and by recognizing that under certain circumstances, e.g., failure of some part of the network work, an outflow link from a node under normal working condition may become an inflow link to the same node. The measures are assessed by comparison with parameters measuring Nodal Pair Reliability and percentage of flow supplied at adequate pressure for a range of networks and link failure conditions in this networks. The entropy measures are shown to reflect changes in the network reliability, as measured by these two comparative parameters, very well.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01544084
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 2
    Digitale Medien
    Digitale Medien
    A univariate model for long-term streamflow forecasting (1991)
    Springer
    Stochastic environmental research and risk assessment 5 (1991), S. 173-188 
    Details
    ISSN: 1436-3259
    Schlagwort(e): Entropy ; spectral analysis ; streamflow forecasting ; univariate model
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Architektur, Bauingenieurwesen, Vermessung , Energietechnik , Geographie , Geologie und Paläontologie
    Notizen: Abstract This paper, the first in a series of two, employs the principle of maximum entropy (POME) via maximum entropy spectral analysis (MESA) to develop a univariate model for long-term streamflow forecasting. Three cases of streamflow forecasting are investigated: forward forecasting, backward forecasting (or reconstruction) and intermittent forecasting (or filling in missing records). Application of the model is discussed in the second paper.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01544056
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 3
    Digitale Medien
    Digitale Medien
    Evaluation of rainfall networks using entropy: II. Application (1992)
    Springer
    Water resources management 6 (1992), S. 295-314 
    Details
    ISSN: 1573-1650
    Schlagwort(e): Entropy ; isoinformation contours ; maximum entropy ; rainfall networks ; variance reduction
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Architektur, Bauingenieurwesen, Vermessung , Geographie
    Notizen: Abstract This paper, the second in the series, applies the entropy approach to space and time evaluation of rainfall networks in Louisiana. The evaluation is made for five sampling intervals: daily, 2-day, weekly, monthly, and yearly, and for two separate seasons. In each case, the best combination of raingages is suggested and the lines of equal information (isoinformation contours) are constructed showing the areas of greater or less information transfer. The isoinformation lines are especially suitable in decisions concerning the expansion of the existing network or deleting the unnecessary raingages.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00872282
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 4
    Digitale Medien
    Digitale Medien
    Evaluation of rainfall networks using entropy: I. Theoretical development (1992)
    Springer
    Water resources management 6 (1992), S. 279-293 
    Details
    ISSN: 1573-1650
    Schlagwort(e): Entropy ; isoinformation ; principle of maximum entropy ; rainfall networks ; transinformation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Architektur, Bauingenieurwesen, Vermessung , Geographie
    Notizen: Abstract This paper, the first in a series of two, develops an entropy-based approach for evaluating rainfall networks. Space and time dependencies between raingages are examined by autocovariance and cross-covariance matrices. Multivariate distributions, associated with different dependencies, are obtained using the principle of maximum entropy (POME). Formulas for entropy (uncertainty in data of one raingage), joint entropy (uncertainty in data of two or more raingages) and transinformation (common information content among two or more raingages) are derived for each distribution, based on normal data. The decision whether to keep or eliminate a raingage depends entirely on reduction or gain of information at that raingage. The lines of equal information (isoinformation contours) are defined by considering two raingages (bivariate case) and many raingages (multivariate case).
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00872281
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
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