Many real-worldmultiobjective optimization problems are dynamic, requiring an optimization algorithm that is able to continuously track the moving Pareto front over time. In this paper, we propose a directed search strategy (DSS) consisting of two mechanisms for improving the performance of multiobjective evolutionary algorithms in changing environments. The first mechanism reinitializes the po...

Dengue virus (DENV) infection is the most common cause of viral hemorrhagic fever, which can lead to life-threatening dengue hemorrhagic fever/dengue shock syndrome (DHF/DSS). Hemorrhage and plasma leakage are two major hallmarks of DHF/DSS. Because the mechanisms causing these pathogenic changes are unclear, there is no effective therapy against DHF/DSS. In this review, we focus on the possibl...

We provide evidence on the dynamic behavior of net labor flows across US states in response to a positive technology shock. Technology shocks are identified as disturbances that increase relative state productivity in the long run for 226 state-pairs encompassing 80 percent of labor flows across US states in the period 1976 2008. The data suggest heterogeneous responses of both employment and n...

This paper is concerned with long-run average cost minimization of a stochastic inventory problem with Markovian demand, fixed ordering cost, convex surplus cost, and lost sales. The states of the Markov chain represent different possible states of the environment. Using a vanishing discount approach, a dynamic programming equation and the corresponding verification theorem are established. Fin...

the main purpose of this paper is theoretically to design the optimal intervention in the foreign exchange market in iran, which has not been investigated by previous studies. the economic fundamentals are strongly affected by the optimal foreign exchange intervention, the consistency of foreign exchange intervention with other policies and political authorities' beliefs about the interven...

Optimization of query in distributed database system is one of the dominant subjects in the field of database theory. Depending upon the placement of data a query can be described as centralized or distributed query. The processing of distributed query is entirely different from the centralized query as in the former case the data is distributed over number of sites. Decision Support System Que...

This paper is concerned with long-run average cost minimization of a stochastic inventory problem with Markovian demand, xed ordering cost, and convex surplus cost. The states of the Markov chain represent di erent possible states of the environment. Using a vanishing discount approach, a dynamic programming equation and the corresponding veri cation theorem are established. Finally, the existe...

This paper is concerned with long-run average cost minimization of a stochastic inventory problem with Markovian demand, xed ordering cost, and convex surplus cost. The states of the Markov chain represent diierent possible states of the environment. Using a vanishing discount approach, a dynamic programming equation and the corresponding veriication theorem are established. Finally, the existe...