Quality of Service (QoS) routing in computer networks is an important component in QoS architectures in order to provide end-to-end QoS support. Two major issues make QoS routing difficult: (1) Most of the QoS routing problems are NP-hard, such as the Delay Constraint Least Cost Routing (DCLCR) problem; (2) Imprecise network information degrades the routing performance. Using DCLCR problem as a...

have largely been investigated separately, in particular, the RWA has seldom considered the existence of wavelength converters. In this paper, we argue perhaps for the first time, that an effective RWA algorithm needs to take into account the presence of wavelength conversion as the later is usually done at much earlier stage during the capacity planning. We proceed to show that existing dynami...

In this paper, the capacitated location-routing problem with fuzzy demands (CLRP-FD) is considered. The CLRP-FD is composed of two well-known problems: facility location problem and vehicle routing problem. The problem has many real-life applications of which some have been addressed in the literature such as management of hazardous wastes and food and drink distribution. In CLRP-FD, a set of c...

In recent years, wireless sensor networks have drawn great attention. This type of network is composed of a large number of sensor nodes which are able to sense, process and communicate. Besides, they are used in various fields such as emergency relief in disasters, monitoring the environment, military affairs and etc. Sensor nodes collect environmental data by using their sensors and send them...

Balance flux and velocity calculations are important in understanding the large-scale dynamics of ice masses and their state of balance. However the grid-based (finite difference) nature of the current algorithms means that there is a variety of ways in which the balance flux and velocity can be calculated. The flux-routing algorithm, grid orientation and grid size all have an impact on the bal...

It has been recognized that the existing routing architecture of today’s Internet is facing scalability problems. Although deployment of CIDR (Classless Inter-Domain Routing) slows the growth of global routing tables, LPM (longest prefix matching), which is greedily pursuing for more-specific prefixes, seriously restricts the advance of scalable routing. The prevalent LPM algorithm for routing ...

Mobile Ad Hoc Networks (MANETs) are receiving a significant interest and are becoming very popular in the world of wireless networks and telecommunication. MANETs consist of mobile nodes which can communicate with each other without any infrastructure or centralized administration. In MANETs, the movement of nodes is unpredictable and complex; thus making the routing of the packets challenging....