This thesis aims at a country specific analysis of freeway traffic oscillations. Toward this end, loop detector data from sites in the USA, Germany and the United Kingdom (UK) was analyzed. By using a method applied in previous work, traffic oscillations were identified in all three countries. Calculation of the cross–correlation coefficient reveals that they travel upstream at speeds of about ...

Routing policies are used to implement traffic agreements in BGP routed networks, and may give rise to a configuration where the policies are in dispute in a way such that no agreement is met for a stable routing state. To determine the probability of extensive oscillation due to policy dispute in a simple configuration, we have performed a set of experiments in both a real and in a simulated r...

This paper proposes a stochastic model predictive control (MPC) framework for traffic signal coordination and control in urban traffic networks. One of the important features of the proposed stochastic MPC model is that uncertain traffic demands and stochastic disturbances are taken into account. Aiming to effectively model the uncertainties and avoid queue spillback in traffic networks, we dev...

1 Abstract/Introduction This report aims at proofing that our simulation results [Zieg99] can be applied to the real network situation. By simulation we found that RED's queuesize oscillates heavily in scenarios with bi-directional TCP bulk-data traffic. These oscillations happen independently of the setting of RED parameters (maxp, wq, maxth, minth) and scenario-parameters (distribution of pro...

We propose a novel adaptive reservation scheme that handles, in an integrated way, streaming and elastic traffic. The scheme continuously adjusts the quality of service perceived by users, adapting to any mix of traffic and enforcing a differentiated treatment among services, both in fixed and variable capacity systems. The performance evaluation carried out verifies that the QoS objective is m...

The objective of this paper is to conduct a country specific analysis of freeway traffic oscillations. Toward this end, loop detector data from sites in the United States, Germany and the United Kingdom was analyzed. By using a method applied in previous work, traffic oscillations were identified in all three countries. Calculation of the cross–correlation coefficient reveals that they travel u...

The ability to estimate the passage of time is essential for adaptive behavior in complex environments. Yet, it is not known how the brain encodes time over the durations necessary to explain animal behavior. Under temporally structured reinforcement schedules, animals tend to develop temporally structured behavior, and interval timing has been suggested to be accomplished by learning sequences...

in this article the relationship between the amount of seasonal rainfall (autumn, winter and spring) and climate indices in iran have been studied. the climate indices (the southern oscillation(soi),the north atlantic oscillation(nao), arctic oscillation(ao),nino 3/4,the multivariate enso index(mei),trans_ nino index(tni) and the pacific decadal oscillation(pdo) are used as independent variable...