So far, many types of location models have been developed to find optimal spatial patterns according to different spatial metrics such as cost, coverage and availability.  The initial focus of these models is on the location availability of service providers and demand estimates, and some of these models are within the framework of multi-objective programming models.  After the advent of scienc...

background: the main purpose of this study was to assess the factorial validity and reliability of the iranian versions of the personality and behavior system scales (49 items) of the ahdq ( the adolescent health and development questionnaire ) and interrelations among them based on jessor's pbt (problem behavior theory) . methods: a multi-staged approach was employed. the cross-cultural adapta...

In this paper, we investigate whether incorporating common factors of CPI sub-aggregates into forecasting models increases the accuracy of forecasts of inflation. We extract factors by both static and dynamic factor models and then embed them in ARMA and VAR models. Using quarterly data of Iran’s CPI and its sub-aggregates, the models are estimated over 1990:2 to 2008:2 and out of sample ...

Service-Oriented Computing and agent technology are nowadays two of the most active research areas in distributed and open systems. Given the growing interest in bridging the two worlds, in this paper we describe a novel approach for service description, discovery and composition in multiagent systems, based on organizational models. An extension to service matching techniques will be presented...