ABSTRACT In this paper, we describe our proposed adaptive deficit-based scheduler for IEEE 802.16e networks working in TDD mode. The scheduler comprised of deficit-based priority queue with adaptive quantum to support variable rate data in both downlink and uplink directions. A Minimum Tolerable Traffic Rate, a QoS parameter defined by the standard is used to guarantee minimum service provided ...

In designing a supply chain, firms are often faced with the competing demands of improved customer service and reduced cost. We develop a model that incorporates fixed distribution center location costs, working and safety stock inventory costs at the distribution centers, fixed and variable transport costs from a plant to the distribution centers and delivery costs to customers. Service is mea...

Background & Aim: One of the programs of the health system in Iran is providing services related to pregnancy, which is provided in three areas of pre-pregnancy, pregnancy, and postpartum care. Quality and quantity assessment shows how health care programs are implemented and identifies the inadequacies of the programs to solve the main problems. Therefore, the present study was conducted to in...

the ability to discover services in mobile ad hoc network (manet) is a major prerequisite. cluster basedcross layer intelligent service discovery for manet (cbisd) is cluster based architecture, caching ofsemantic details of services and intelligent forwarding using network layer mechanisms. the cluster basedarchitecture using semantic knowledge provides scalability and accuracy. also, the mini...

background: a patient's satisfaction with nursing service is one of the main indices for measuring the quality and effectiveness of health care. objective: the purpose of this study was to investigate and compare patients' satisfaction with the nursing service provided in selected training hospitals in tehran. methods: this cross-sectional study was conducted in 2013 using patient&apo...

This research is aimed at developing a model for measuring and comparison amount of supply and demand for different urban services from quality of life and equity perspectives, in urban built-up areas. This paper explains different steps of implementing the model as a tool for evaluating accessibility of residents to various services according to two main criteria: Land per capita and distance ...