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 ...

Pattern recognition has to face very complex tasks, often requiring collaboration between several classifiers to perform a well classification performance and to have good generalization ability. Multi-classification systems are mechanisms for taking into account the decision of a set of classifiers to ameliorate the generalization performance. Therefore such systems are dependant from the cont...

nowadays, the environmental impact of transportation project and, especially air pollution impacts, are major concerns in evaluating transportation projects. based on this concern, beside definition of traditional objective functions like total travel time and total investment cost, different type of environmental related function is considered as objective function in urban network design. in ...