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  • Articles  (5)
  • forecasting  (3)
  • reservoir design  (2)
  • teaching
  • Springer  (5)
  • American Institute of Physics
  • Cell Press
  • Oxford University Press
  • 2010-2014
  • 2005-2009
  • 1985-1989  (5)
  • 1975-1979
  • 1945-1949
  • 2007
  • 2005
  • 1987  (5)
  • 1978
  • 1976
  • Architecture, Civil Engineering, Surveying  (5)
Collection
  • Articles  (5)
Source
Keywords
Publisher
  • Springer  (5)
  • American Institute of Physics
  • Cell Press
  • Oxford University Press
Years
  • 2010-2014
  • 2005-2009
  • 1985-1989  (5)
  • 1975-1979
  • 1945-1949
Year
Topic
  • 1
    Electronic Resource
    Electronic Resource
    Rainfall-runoff forecasting methods, old and new (1987)
    Springer
    Stochastic environmental research and risk assessment 1 (1987), S. 303-318 
    Details
    ISSN: 1436-3259
    Keywords: Rainfall-runoff models ; forecasting ; unit hydrograph
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Energy, Environment Protection, Nuclear Power Engineering , Geography , Geosciences
    Notes: Abstract Here we review the main thrusts of rainfall-runoff modelling with an eye toward the advantageous use of the massive date sets being accumulated and the modern computers capable of dealing effectively with such sets. More than a tutorial, this study is aimed at providing a unifying structure for analyzing available techniques. The closing section draws attention to the existence of an alternative methodology.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01543102
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  • 2
    Electronic Resource
    Electronic Resource
    The reliability of using the gravity model for forecasting trip distribution (1987)
    Springer
    Transportation 14 (1987), S. 175-192 
    Details
    ISSN: 1572-9435
    Keywords: gravity model ; trip distribution ; forecasting
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying
    Notes: Abstract The main purpose of this study is to assess the forecasting capability of the gravity model and to investigate the merit of including K-factors when using the model. Peak hour trip data was obtained for four study year periods 1962, 1971, 1976 and 1981 for the City of Winnipeg. Analysis of the calibration results indicated that the F-factors for the twenty year period were stable within a range of values. In general, however, the K-factors were found to be inconsistent from one prediction period to the next, and when used in forecasting trips they resulted in larger errors than without their use. The validity of using K-factors or the method which has been used to determine them is questionable. It was concluded that while K-factors are very meaningful in theory (as defined), they are not appropriate for use in predicting O-D matrices based on the method by which they are currently estimated (i.e. as a simple ratio). Further study is needed to investigate an alternative method of calibrating the gravity model such as the cell-by-cell regression method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00837528
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  • 3
    Electronic Resource
    Electronic Resource
    Initial model choice: An operational comparison of stochastic streamflow models for drought (1987)
    Springer
    Water resources management 1 (1987), S. 3-15 
    Details
    ISSN: 1573-1650
    Keywords: Droughts ; mathematical models ; reservoir design ; stochastic models ; water supply
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: Abstract The performance of five stochastic models for generating annual streamflow sequences is evaluated based on applications to four Utah streams. Model performance is evaluated in terms of preservation of annual persistence statistics; cost and ease of model use; magnitude of the economic regret associated with drought-related agricultural losses; and comparison of reservoir capacity and critical drought design parameters. The ARMA-Markov and ARMA models are judged to be best overall in terms of preserving short- and long-term persistence. The broken line model is judged to be best in terms of minimizing economic regret. An initial model choice procedure is proposed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00421794
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  • 4
    Electronic Resource
    Electronic Resource
    An investigation of the instrumental variable-approximate maximum likelihood method of modeling and forecasting daily flows (1987)
    Springer
    Water resources management 1 (1987), S. 79-106 
    Details
    ISSN: 1573-1650
    Keywords: Daily flows ; forecasting ; instrumental variable method ; parameter estimation ; rainfall filter
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: Abstract The instrumental variable-approximate maximum likelihood (IV0AML) method provides a technique to develop better models for short-time increment hydrologic data. In this method, a recursive input-output model, which consists of a deterministic model and a stochastic noise model are used. These models handle the system and measurement noise separately. The instrumental variable method has been developed to eliminate the bias in parameter estimates. The IV-AML method is investigated in the present study. Parameters of daily rainfall-runoff models are estimated by the IV-AML and by least squares methods and compared. The effects of a rainfall filter on parameter estimates are also investigated. Forecast accuracies of models whose parameters are estimated by IV-AML and least squares methods are compared. The results indicate that the forecast accuracy of models whose parameters are estimated by least squares method is comparable to that of models whose parameters are estimated by IV-AML method. The rainfall filter, on the other hand, reduces the parameter variation and improves forecasts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00422650
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  • 5
    Electronic Resource
    Electronic Resource
    One hundred years of applied storage reservoir theory (1987)
    Springer
    Water resources management 1 (1987), S. 159-175 
    Details
    ISSN: 1573-1650
    Keywords: Storage reservoirs ; dam theory ; storage regulation ; streamflow control ; reservoir management ; reservoir design ; reservoir routing ; storage-yield relationship ; water supply ; water resources management
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: Abstract The paper summarizes what the author considers to be the most important and most interesting aspects of the development of the applied deterministic as well as stochastic theory of reservoir storage during the past century.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00429941
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