wireless sensor networks (wsns) are one of the most interesting consequences of innovations in different areas of technology including wireless and mobile communications, networking, and sensor design. these networks are considered as a class of wireless networks which are constructed by a set of sensors. a large number of applications have been proposed for wsns. besides having numerous applic...

This paper reviews the service quality management control and upgrade as well as the communications and information technology enhancement. The purpose of this research is the control and improvement of the service quality management as well as the enhancement of the parent telecommunications network of I.R.Iran that finally, taking the specific conditions into consideration, the quality manage...

Literature review related to nonrenewable resources shows that technological improvements have considerable effects on resource depletion and decreasing operational cost.  Therefore it is assumed that technology is the most important and influential variables in the production function and utilization cost of these resources. In this study, we assess the long term effect of technology diffusion...

As is understood by the Safavid documents, surely endowment has been of its most flourishing periods in that time. Safavid King have been counted as the forerunners for great endowments and, following them, many of regional rulers, men of the Court and charitable people throughout country endowed considerable parts of their properties. With regard to the extensiveness and dispersion of the stud...