This paper analyzes a communication network with heterogeneous customers. We investigate priority queueing as a way to differentiate between these users. Customers join the network as long as their utility (which is a function of the queueing delay) is larger than the price of the service. We focus on the specific situation in which two types of users play a role: one type is delay-sensitive (‘...

This paper analyzes a communication network, used by customers with heterogeneous service requirements. We investigate priority queueing as a way to establish service differentiation. It is assumed that there is an infinite population of customers, who join the network as long as their utility (which is a function of the queueing delay) is larger than the price of the service. We focus on the s...

A multiobjective programming for transportation model with the consideration of both depot to customer and customer to customer relationships is proposed in this research. The objectives are to minimize the total transportation cost which is the baseline objective and to minimize the overall independence value. A Lexicographic Goal Programming (LGP) is applied to the proposed model. A minimizat...

Wafer fabrication is perhaps the most capital-intensive and technology-intensive industry. Due to customer demand uncertainty, the wafer fabrication industry in Taiwan became dramatically competitive. Emergency orders demanded from customers may exist for the need of time-to-market. How to respond to emergency orders from customers, to analyze the impact to production and cost, and to design an...

The performance of any cellular wireless network, as well as its revenue (number of customers using the network, and their degree of satisfaction) is determined to a great extent by its call admission control (CAC) protocol. As its name implies, the CAC determine if a new call request is granted, or rejected. In this paper, we propose a call admission control protocol for cellular multimedia wi...

Fatemeh Soleimani Roozbahani PhD Candidate for IT Management, Islamic Azad University, Science and Research Branch of Tehran, Iran Email: [email protected] Sanaz Nikghadam Hojjati PhD Candidate for IT Management, Islamic Azad University, Science and Research Branch of Tehran, Iran Email: [email protected] Reihaneh Azad Master Student of IT Management, Farabi University, Kara...

We consider a memoryless unobservable single-server queue where customers are homogeneous with respect to their reward (due to service completion) and with respect to their cost per unit of time of waiting. Left to themselves, it is well known that in equilibrium they will join the queue at a rate that is higher than it is socially optimal. We show that if customers draw a random preemptive pri...

This paper deals with a Markovian queueing system having a multi-task service counters and finite queue in front of each counter. The total service of a customer is completed in three stages provided by two servers at three counters. The first server (S1) can serve the counter I and III alternatively, whereas second server (S2) provides the service at counter II. The server (S1) g ives the prio...

Metrics for assessing online customer satisfaction (e-satisfaction) are essential in gauging the success and failure of e-commerce. The Internet business must determine and understand the values of its existing and potential customers. Hence, it’s important for researchers to develop and validate a diverse array of metrics to comprehensively capture the attitudes and feelings of online customer...