Toshiharu Kojiri

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Traditionally, deriving “operation rules” for multi-reservoirs by modelists, provide convenient tools for “decision makers” without involving them into the detailed modeling procedure. Nevertheless when it comes to “conjunctive use of surface and ground water resources”, they have to face to complex hydrological models at regional scale, or too simplified(More)
It has long been the goal of flood forecasting to provide timely and accurate estimates of future discharge conditions at specific watershed locations. In order to achieve a shift away from the traditional flood prediction framework which focuses primarily on using point rainfall observations and lumped parameter or statistical models to make deterministic(More)
A framework for short-term probabilistic forecasting of watershed flood stage conditions using a distributed rainfall-runoff model is proposed. A stochastic rainfall pattern simulation model capable of generating input for a distributed rainfall-runoff model is developed. Generation of rainfall patterns over a 6-hour period is achieved using a translation(More)
To plan a water resources system, fuzzy theory is introduced to handle uncertain future information. Representing runoff hydrograph and future water demand with fuzzy membership functions, the optimal site and scale of the system are decided through fuzzy linear programming. Then the construction schedule is calculated through fuzzy dynamic programming,(More)
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