Heuristic Algorithm with Simulation Model for Searching Optimal Reservoir Rule Curves

Developing optimal operating reservoir rule-curves in drought periods

In this study a simulation-optimization model is developed for deriving operation rule-curves in drought ‎periods. To each reservoir, two rule-curves with adjustable monthly levels are introduced dividing the ‎reservoir capacity into three zones between the normal water level and minimum operation level. To each ‎zone of a reservoir and for each month of the year a hedging coefficient is introd...

DETERMINATION OF OPTIMAL HEDGING RULE USING FUZZY SET THEORY FOR MULTI-RESERVOIR OPERATION

To deal with severe drought when water supply is insufficient hedging rule, based on hedging rule curve, is proposed. In general, in discrete hedging rules, the rationing factors have changed from a zone to another zone at once. Accordingly, this paper is an attempt to improve the conventional hedging rule to control the changes of rationing factors. In this regard, the simulation model has emp...

FRAGILITY CURVES FOR STRUCTURES EQUIPPED WITH OPTIMAL SATMDs

In this paper, a procedure has been presented to develop fragility curves of structures equipped with optimal variable damping or stiffness semi-active tuned mass dampers (SATMDs). To determine proper variable damping or stiffness of semi-active devices in each time step, instantaneous optimal control algorithm with clipped control concept has been used. Optimal SATMDs have been designed based ...

Derivation of conflict resolution rule-curves in multi-purpose multi-reservoir system for inter-basin water transfer during drought

An Almost Optimal Algorithm for Unbounded Searching

Unbounded searching can be viewed as searching an ordered table of infinite size. In this paper we present an algorithm for unbounded searching and derive a lower bound on the number of comparisons required which shows that the algorithm is very nearly optimal. (Submitted to Information Processing Letters) * Work supported in part by U. S. Energy Research and Development Administration under co...