this paper investigates the performances of artificial neural networks approximation, the translog and the fourier flexible functional forms for the cost function, when different production technologies are used. using simulated data bases, the author provides a comparison in terms of capability to reproduce input demands and in terms of the corresponding input elasticities of substitution esti...

Introduction: One of the most frequent abnormal sleep disorders is insomnia, which can interfere with the daily functioning of an individual by affecting social relationships and occupational activity. Insomnia is often referred to as "sahar" in most traditional Iranian sources. The scholars of traditional medicine in Iran grouped the causes of insomnia into "voluntary" and inv...

the aim of this paper is to review the created problems and failure of environmental design patterns in designing process by designers. not respectfully addressing the context of environment during designing process have resulted in the loss quality of environment, damage to both nature and essence of environment as manifested in the case study area. methodology of the research was based on the...

This paper investigates the performances of artificial neural networks approximation, the Translog and the Fourier flexible functional forms for the cost function, when different production technologies are used. Using simulated data bases, the author provides a comparison in terms of capability to reproduce input demands and in terms of the corresponding input elasticities of substitution esti...