Transport systems are full of interactions between the demand for travel and the supply costs. As the demand increases, congestion builds up in the network and the costs of travel increases. In response to increased costs of travel, people may alter their demand for travel in terms of change of route, departure-time, mode, or choose not to travel. This demand/supply interaction enables an econo...

Recent studies have shown that a non-negligible number of packets face multiple congested links on Internet paths. We investigate the impact of multiple congested links on Active Queue Management (AQM) techniques. We present the results of an ns-2 evaluation study of various AQM techniques that, in contrast to previous studies of AQM, uses a complex network topology including up to 3 congested ...

Censor-Hillel et al. [PODC’15] recently showed how to efficiently implement centralized algebraic algorithms for matrix multiplication in the congested clique model, a model of distributed computing that has received increasing attention in the past few years. This paper develops further algebraic techniques for designing algorithms in this model. We present deterministic and randomized algorit...

Networking researchers work from mental models of the Internet’s important properties. The scenarios used in simulations and experiments (including our own) reveal aspects of these mental models, often including one or more of the following implicit assumptions: Flows live for a long time and transfer a lot of data. Simple topologies, like a “dumbbell” topology with one congested link, are suff...

I the past most traffic control strategies have focused primarily on optimizing the operation of traffic facilities to serve a given and fixed amount of traffic flow. However, as the ultimate limit of such improvements is being approached, significant further improvements can only be achieved through the pursuit of different types of strategies. One such approach involves improved routing of tr...

A new multi-objective intermodal hub-location-allocation problem is modeled in this paper in which both the origin and the destination hub facilities are modeled as an M/M/m queuing system. The problem is being formulated as a constrained bi-objective optimization model to minimize the total costs as well as minimizing the total system time. A small-size problem is solved on the GAMS software t...