The performance of horizontal axis tidal current turbines (HATCT) strongly depends on their geometry. According to this fact, the optimum performance will be achieved by optimized geometry. In this research study, the multi objective optimization of the HATCT is carried out by using four different multi objective optimization algorithms and their performance is evaluated in combination with bla...

The scarcity of water resources nowadays lays stress on researchers to develop strategies aiming at making the best benefit currently available resources. One these is ensuring that reliable and near-optimum designs distribution systems (WDSs) are achieved. Designing WDSs a discrete combinatorial NP-hard optimization problem, its complexity increases when more objectives added. Among many exist...

Abstract Introduction Mild-to-moderate obstructive sleep apnea (mOSA) is highly prevalent in the general population and comorbid with cardiovascular and/or cerebrovascular diseases (CBVD). We examined association between mOSA all-cause mortality modifying effect of age CBVD. Methods A total 1681 adults 20-88 years old from Penn State Adult Cohort (41.9% male, 10.5% racial/ethnic minority) were ...

In this paper, a hybrid meta-heuristic approach is proposed to optimize the mathematical model of a system with mixed repairable and non-repairable components. In this system, repairable and non-repairable components are connected in series. Redundant components and preventive maintenance strategies are applied for non-repairable and repairable components, respectively. The problem is formulate...

In this paper, a multiobjective simulated annealing (MOSA) method is introduced and discussed with the multiobjective evolutionary algorithms (MOEAs). Though the simulated annealing is a very powerful search algorithm and has shown good results in various singleobjective optimization fields, it has been seldom used for the multiobjective optimization because it conventionally uses only one sear...

In this study, a new nonlinear mathematical programming model of mixed integer was presented to formulate the problem designing sustainable closed loop supply chain, in which three aspects sustainability, i.e., social effect such as job creation, customer satisfaction, and distributors, environmental effects reducing air pollution, economic chain costs, increasing reliability, quality returned ...