the use of plant fibers in producing different industrial products has attracted the attention of many researchers. plant fibers, in comparison with industrial ones, are degraded faster in nature and are more environments friendly. one of the major conventional uses of plant fibers is the production of traditional ropes which are subjected to tensile forces. however, the traditional ropes bear ...

the main goal of this study was to investigate the way of affecting of water in production of cucumber. from aspect of econometrics, mutual relationships of production function and expenses have been analyzed in which translog cost function has been used. this function has been estimated using the conditional input demand functions, the shefard theorem, chemical fertilizer, animal fertilizer, l...

While cloud computing has enabled applications to be designed as elastic cloud services, there is a lack of tools and techniques for monitoring and analysing their elasticity at multiple levels, from the service level to the underlying virtual infrastructure. In this paper, we focus on monitoring and evaluating elasticity of cloud services, crucial for supporting users and automatic elasticity ...

this study carried out for economic investigation on laying hen farms in tehran province. the data was collected through completion of questionnaire by direct interview from 41 layer farms, which were selected by stratified random sampling method in 2013. among all types of production functions, the cobb-douglas production function was selected and its coefficients was estimated and average pro...