in this paper, the efficiency of persian speech phonemes from the point of view of efficiency in speaker recognition has been studied, and then with due attention to efficiencies, the ranking of phonemes has been done. for estimating the efficiencies of phonemes, we have introduced one criterion that has been defined in the form of phonemes “inter speaker distance” to “intra speaker distance” r...

technical efficiency of different sectors is important for economic policy making purposes. this study considering regions as independent decision-making units, measures technical efficiency of industrial sector for every region of the country and then examines its determinant factors.generally influential factors of efficiency are classified in two main groups. first group includes the basic e...