We consider the problem of routing and assignment of wavelength (RAW) in optical networks. Given a set of requests for all-optical connections (or lightpaths), the problem is to [a)find routes from the source nodes to their respective destination nodes, and [ b) assign wavelengths to these routes. Since the number of wavelengths is limited, lightpaths cannot be established between every pair of...

We consider the problem of routing and assignment of wavelength (RAW) in optical networks. Given a set of requests for all-optical connections (or lightpaths), the problem is to [a)find routes from the source nodes to their respective destination nodes, and [ b) assign wavelengths to these routes. Since the number of wavelengths is limited, lightpaths cannot be established between every pair of...

This dissertation investigates various areas of IP network planning for realtime services. These areas are traffic characterization, capacity assignment, robust network dimensioning, and network planning tool development. In regards to traffic characterization, various clients of realtime services are tested in different situations and their traffic is characterized using known models. Motivate...

When navigating our world we often first plan or retrieve an ideal route to our goal, avoiding alternative paths that lead to other destinations. The medial temporal lobe (MTL) has been implicated in processing contextual information, sequence memory, and uniquely retrieving routes that overlap or "cross paths." However, the identity of subregions of the hippocampus and neighboring cortex that ...

In this talk, we treat the problem of the assignment of routes to vehicles in rush hours depending on the traffic situation on the road. Due to the rapidly increasing number of route guidance system (RGS) users, present RGSs might shortly worsen traveling times in congestion since they direct all their users on the same origin-destination (O-D) pair to the same routes. This myopic behavior, tog...

Optimizing gate scheduling at airports is an old, but also a broad problem. The main purpose of this problem is to find an assignment for the flights arriving at and departing from an airport, while satisfying a set of constraints.A closer look at the literature in this research line shows thatin almost all studies airport gate processing time has been considered as a fix parameter. In this res...

Short-term prediction of traffic flow is central to alleviating congestion and controlling the negative impacts of environmental pollution resulting from vehicle emissions on both inter- and intra-urban highways. The strong need to monitor and control congestion time and costs for metropolis in developing countries has therefore motivated the current study. This paper establishes the applicatio...

mends the use of travel time values for congested periods that are 2.5 times the value of time estimates during uncongested periods (7). Kawamura investigated differences in value of time among operators and trucking industry segments; findings from Kawamura’s research show that freight carriers have a value of time that is several times higher than that of passenger vehicles and that there is ...

We use web-based and autonomous navigation systems in everyday life. These systems produce driving directions by computing a shortest path (or an approximation) with respect to a length function based on various measures, such as distance and travel time. However, optimal paths do not necessarily match the personal preferences of individual users. These preferences may be based on better local ...