Altınkaya and Şevket Gümüştekin for serving on my thesis committee. Their advice and comments are greatly appreciated. I would like to thank my colleagues for supplying me various documents and my wife Berna, being always by my side. Finally, I would like to dedicate this thesis to the memory of my father to whom I learnt patience. iv ABSTRACT Ever-increasing demand for high capacities brought ...

Introduction: If the patients are not satisfied with the hospital, this results in switching behavior of patients. In this situation, among different hospitals, the patients choose the hospital with higher level of service quality. So, the main aim of this paper is investigating the effect of hospital's service quality on switching behavior of inpatients in Shahid Sadoughi Hospital of Yazd. Me...

Multiprotocol Label Switching (MPLS) fasten the speed of packet forwarding by forwarding the packets based on labels and reduces the use of routing table look up from all routers to label edge routers(LER) , where as the label switch routers (LSRs) uses Label Distribution Protocol (LDP) or RSVP (Resource reservation Protocol) for label allocation and Label table for packet forwarding . Dynamic ...

This two-part paper series studies the performance of buffered Aloha networks with K-Exponential Backoff collision resolution algorithms. Part I focuses on stability and throughput analysis and Part II presents the delay analysis. In Part I, the buffered Aloha network is modeled as a multiqueue single-server system. We adopt a widely used approach in packet switching systems to decompose the mu...

This paper studies the buffered Aloha with K-exponential backoff collision resolution algorithms. The buffered Aloha network is modeled as a multi-queue single-server system. We adopt a widely used approach in packet switching systems to decompose the multi-queue system into independent first-in-first-out (FIFO) queues, which are hinged together by the probability of success of head-of-line (HO...

In this paper we present an optical hypercube-based multichannel network. The hypercube routing functions are implemented on a ring topology using wavelength division multiplexed channels on a single ber. For a network of size N, we show that only r = log 2 N distinct channels are required. This design can accomodate both static and dynamic routing using packet or circuit switching. In addition...

One of the difficulties with PWM switching converters is high switching loss and electromagnetic interference due to switching at non-zero voltage and current, which limits the operating frequency. In order to reduce the converter volume and weight (by increasing the frequency) and reducing switching losses, zero voltage and current switching methods are recommended. In this paper, four main ze...

One of the difficulties with PWM switching converters is high switching loss and electromagnetic interference due to switching at non-zero voltage and current, which limits the operating frequency. In order to reduce the converter volume and weight (by increasing the frequency) and reducing switching losses, zero voltage and current switching methods are recommended. In this paper, four main ze...

Virtual-circuit switching achieves high forwarding performance via the combination of a hardware frame forwarding path and link-layer connection state that is stored in each switch along a virtual circuit. A similar result can be achieved when forwarding datagrams across an internetwork by uncoupling forwarding from hop-by-hop routing. That uncoupling is achieved by using a specialized network-...

Problem statement: Traditional IP networks have many limitations such as routing tables, which can be complex and time consuming. These limitations affect the performance of the network in some applications of triple play services (i.e., voice, video and data) which are characterized as time sensitive applications. Thus, Multi Protocol Label Switching (MPLS) technology has been proposed to spee...