In the light of the introduction of 3G systems, we present a comprehensive study of the performance of GSM and GPRS. UMTS is already in a few countries deployed, on the other hand it is expected that it will be limited to hot-spot areas, while voice calls will be preferably established with existing networks. At the early 80’s, when GSM was introduced it was considered as an overspecified syste...

by studying the evolution history of budgeting systems, you may discern three stages: in the first stage, controlling role of budget is regarded its major function. in the second stage, budget is considered as a means for management improvement. in the third stage, the role of budget is considered in economic planning, implementation of programs and government performance management. after worl...

the information technology has profoundly changed the way organizations are structured as well as the nature and the role of the business divisions. human resource department, as one of the most vital units of any organization has also not been immune from these changes and many of its functions has transformed from traditional techniques to it-based methods. the current research aimed to clari...

This article develops an integrated model of transmitting strategies and operational activities to enhance the efficiency of supply chain management. As the second objective, this paper aims to improve supply chain performance management (SCPM) by employing proper decision-making approaches. The proposed model optimizes the performance indicator based on SCOR metrics. A process-based method is ...