In order to use WDM networks efficiently and effectively, a lightpath is dynamically established upon the arrival of a connection request. The dynamic routing algorithms are usually classified into adaptive and alternative schemes based on whether the chosen routes are predetermined or not. In this work, we propose a new weighted function for link cost assignments. The purpose of the cost funct...

Abstract- Efficient message delivery in city environment is required to ensure driver’s safety and passenger’s comfortability. In cities of developed nations, routing of data in vehicular Ad hoc Network (VANET) faces many challenges such as radio obstacles, mobility constraints and uneven nodes distribution. These factors primarily makes communication between vehicles complex. To overcome and t...

Issues of the load-balanced K-shortest path routing are investigated in this paper, including multiple alternative routing strategies, network loss performance, and optimal interval for network status updates. A max-min cost function for alternative path evaluation is applied to Least Loaded Routing model in circuitswitched networks. Two kinds of routing strategy which may update the network st...

In this paper, a robust optimization approach is proposed to design a dynamic cellular manufacturing system (DCMS) under uncertainty of processing time of products. In addition, a mathematical model considering cell formation, inter-cell design and production planning under a dynamic environment (i.e., product mix and demand are changed in each period) is presented. Therefore, reconfiguration b...

Mobile ad hoc networks (MANETs) are highly vulnerable to both link and node failures due to nodal mobility. The routing resilience against link and/or node failures needs to be enhanced to avoid the degradation of network performance. This can be achieved by multipath routing which uses multiple alternative paths to route the messages via multiple disjoint paths and result in increased bandwidt...

Genetic Zone Routing Protocol (GZRP) is a new hybrid routing protocol for MANETs which is an extension of ZRP by using Genetic Algorithm (GA). GZRP uses GA on IERP and BRP parts of ZRP to provide a limited set of alternative routes to the destination in order to load balance the network and robustness during node/link failure during the route discovery process. GZRP is studied for its performan...

Localized Quality of Service (QoS) routing was recently proposed as an alternative to the QoS routing algorithms that use global network state information to make routing decisions. In localized QoS routing, each router maintains a predetermined set of candidate paths for each of the destinations. For a connection request, a router decides the path for the request based on the information maint...

A routing protocol chooses one of the several paths (routes) from a source node to a destination node in the computer network, to send a packet of information. In this paper, we propose a new routing protocol, which we call st-routing protocol, based on st-numbering of a graph. The protocol fits well in noisy environments where robustness of routing using alternative paths is a major issue. The...

This paper addresses the cell formation problem with alternative process plans and machine capacity constraints. The problem of Generalized Cell Formation consists in defining the preferential process and the preferential routing for each part optimizing the grouping of machines into independent manufacturing cells. The problem is reduced in two grouping problems: grouping operations (including...