Researchers are applying more holistic approaches to the feedback control of the air transportation system. Many of these approaches rely on economic feedback, including the cost of delays to the airlines. Establishing an accurate mechanism for estimating the cost of a delays for each portion of a flight (gate costs, taxiing in and out costs, and en-route costs) is useful for many aspects of mo...

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This paper explores the inherent delays of airline schedules resulting from limited buffer times and stochastic disruptions in airline operations. The reliability of airline schedules is discussed and a set of measuring indices is developed to evaluate schedule reliability. It is found that significant gaps exist between the real operating delays, the inherent delays (from simulation) and the z...

The Economic Partnership Agreements (EPAs) between the group of African, Caribbean and Pacific (ACP) countries and the European Union could serve as an opportunity to accelerate global and regional trade integration of ACP countries. Moreover, the European Commission intends to use EPAs as a tool for development and the eradication of poverty in ACP countries. To achieve their potential develop...

SGOMS is a way of scaling up GOMS models to model multi agent work in complex sociotechnical systems. In particular, it allows GOMS to handle interruptions, multi-tasking, and re-planning. West and Pronovost (2009) discussed some of the theoretical issues around building an SGOMS model in ACT-R. This paper presents work in progress for two such models. Specifically, we used ACT-R to create a mo...

Schedule development is typically the first phase of the airline planning process. We present a framework for perturbing scheduled departure and arrival times after a crew schedule has been found. We characterize perturbations that keep a schedule legal while not increasing the planned cost of the crew schedule. We show that when random delays occur in operations, the expected cost can be reduc...

Airline crew scheduling is a very important part of the operational planning commercial airlines, but it linear integer programming problem with multi-constraints. Traditionally, airline determined by solving pairing (CPP) and rostering (CRP), sequentially. In this paper, we propose new heuristic solver based on parallel genetic algorithm an innovative algorithm, which improves traditional inte...

Ref2: The following is a review of the manuscript, “The effects of convection on new particle formation in the free troposphere: Case studies” by Benson et al. This review pertains to a revised version of the manuscript. The case studies in this revision are improved and provide a clearer representation of the relationship between air history and new particle formation. However, the discussion ...

The ability to generate crew pairings quickly is essential to solving the airline crew scheduling problem. Although techniques for doing so are well-established, they are also highly customized and require significant implementation efforts. This greatly impedes researchers studying important problems such as robust planning, integrated planning, and automated recovery, all of which also requir...