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Allocating resources in a web server cluster is usually performed nowadays by a cluster administrator. However, due to the dynamics of the Internet as far as the use of resources is concerned, such task may be considered critical and inefficient if accomplished manually. This paper presents an architecture that performs an automatic dynamic reconfiguration using a multi agent system. The conception,...
Multiple broadcasters signcryption schemes (MBSS) allow multiple centers to distribute signed and encrypted data to a large set of users so that only a particular subset of privileged authorized users can decrypt it. These schemes require the authentication of the message or the broadcaster and public ciphertext authenticity which allows the gateway of the system to filter the incorrect ciphertext...
Distributed discrete event systems (Distributed DES) are increasing with the development of networks. A major problem of these systems is the evaluation of their performance at the design stage. We are particularly interested in assessing the impact of computer networking protocols on the control of manufacturing systems. In our design methodology, these systems are modeled using Petri nets. In this...
Optical packet switching (OPS) technologies are among the most promising solutions for next generation network architectures. Resource contention resolution and Quality of Service (QoS) management mechanisms have been developed in order to remedy the lack of optical buffering and implement multi-service support in OPS networks. In this paper we propose an analytical model for the access and core nodes...
Pakistan Internet Exchange (PIE) is the largest Internet Exchange Point (IXP) in Pakistan operated and maintained by Pakistan Telecom. PIE serves almost all categories of IP users like ISPs, Educational Institutions, DNOPS, VOIP Operators, Cable Operators and Institutions with multiple services like Internet Access, DSL, MPLS-VPNs, VoIP, IPTV and VoD. PIE has 3 main nodes and 42 remote nodes with...
As a result of increasing international air traffic, airports are one of the most complicated built environments. Airport terminals will increasingly require ubiquitous systems with high levels of computational power to provide the necessary intelligent automation, high quality services to passengers and stringent levels of safety and security that are as unobtrusive as possible. These requirements...
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