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  • Articles  (4)
  • Entropy  (4)
  • Springer  (4)
  • American Physical Society (APS)
  • Blackwell Publishing Ltd
  • Elsevier
  • 1990-1994  (4)
  • Architecture, Civil Engineering, Surveying  (4)
  • Natural Sciences in General
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  • Articles  (4)
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  • Springer  (4)
  • American Physical Society (APS)
  • Blackwell Publishing Ltd
  • Elsevier
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  • 1
    Electronic Resource
    Electronic Resource
    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
    Keywords: Entropy ; reliability ; redundancy ; water distribution networks ; nodal pair reliability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Energy, Environment Protection, Nuclear Power Engineering , Geography , Geosciences
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01544084
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    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
    Keywords: Entropy ; spectral analysis ; streamflow forecasting ; univariate model
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Energy, Environment Protection, Nuclear Power Engineering , Geography , Geosciences
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01544056
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Evaluation of rainfall networks using entropy: II. Application (1992)
    Springer
    Water resources management 6 (1992), S. 295-314 
    Details
    ISSN: 1573-1650
    Keywords: Entropy ; isoinformation contours ; maximum entropy ; rainfall networks ; variance reduction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00872282
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  • 4
    Electronic Resource
    Electronic Resource
    Evaluation of rainfall networks using entropy: I. Theoretical development (1992)
    Springer
    Water resources management 6 (1992), S. 279-293 
    Details
    ISSN: 1573-1650
    Keywords: Entropy ; isoinformation ; principle of maximum entropy ; rainfall networks ; transinformation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: 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).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00872281
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