The aim of this study is to optimize performance functions of turbofan engines considering the off-design model of turbofan engine as well as employing multi-objective genetic algorithm. The design variables including high-pressure compressor pressure ratio, low-pressure compressor pressure ratio, fan pressure ratio and bypass ratio are calculated in such a way that the corresponding functions ...

We deene an extended real-valued metric, , for positional games and prove that this class of games is a topological semigroup. We then show that two games are nitely separated ii they are path-connected and ii two closely related Conway games are equivalent. If two games are at a nite distance then this distance is bounded by the maximum diierence of any two atoms found in the games. We may imp...

to study general and specific combining ability of some rice varieties for grain physical properties and milling quality, a diallel design with five parents (hashemi, vandana, kadous, shahpasand and ir36) was used. parents and their f1 progenies (25 genotypes) were grown in a randomized complete blocks design with three replications in the research field of rice research institute of iran (rrii...