We study a single server queue with two different arriving streams, a tagged arrival process and a background arrival process. The tagged traffic is assumed to be an Interrupted Poisson Process (IPP) and the background traffic is Poisson. The service time is exponentially distributed and customers are served in a FIFO manner. We obtain numerically the PDF of the inter– departure time of the IPP...

Title of thesis: ALL ABOUT CONGESTION: MODELING DEPARTURE TIME DYNAMICS AND ITS INTEGRATION WITH TRAFFIC MODELS Chenfeng Xiong, Master of Science, 2011 Thesis directed by: Professor Lei Zhang Department of Civil and Environmental Engineering This thesis comprehensively studies departure time choice models, and analyzes the consequent system-level peak spreading effects. In modeling, the school ...

Given the sets of flights and aircraft of an airline carrier, the fleet assignment problem consists in assigning the most profitable aircraft type to each flight. An extension to this problem is to allow for some flexibility on flight departure times. These time adjustments increase the number of possible connections and therefore improve the solution quality in terms of profits or in the reduc...

Despite traditional four-step model is the most prominent model in majority of travel demand analysis, it does not represent the potential correlations within different travel dimensions. As a result, some researches have suggested the use of choice modelling instead. However, most of them have represented travel dimensions individually rather than jointly. This research aims to fill this gap t...

Process operators at large railway stations have the difficult task to secure a fluent train traffic flow while minimizing deviations from established timetables. Variation in actual train departure times is inevitable due to many circumstances such as arrival delays and fluctuations in alighting and boarding time, even if some buffer time is contained in the dwell time. Moreover, a departure m...

An increasing number of corporations and workplaces are providing flexible working hours or flextime for employees, which is expected to reduce congestion by redistributing the temporal pattern commuters’ departure time. This study examines impact on time choice using a Bayesian continuous-time hazard duration model. The model accommodates time-varying effect covariates unobserved heterogeneity...

T IME travel, I maintain, is possible. The paradoxes of time travel are oddities, not impossibilities. They prove only this much, which few would have doubted: that a possible world where time travel took place would be a most strange world, different in fundamental ways from the world we think is ours. I shall be concerned here with the sort of time travel that is recounted in science fiction....