This paper studies the transit network scheduling problem and aims to minimize the waiting time at transfer stations. First, the problem is formulated as a mixed integer programming model that gives the departure times of vehicles in lines so that passengers can transfer between lines at...

The assignment of aircraft arriving on schedule to available gates is a major issue during the daily airline operations. The Gate Assignment Problem (GAP) is an easily-understood but difficult to solve problem. An important issue in GAP is to minimize the distance a passenger is required to walk...

This paper presents a formulation and two solution methods for a very complex logistical problem in disaster relief management. The problem to be addressed is a large-scale multicommodity, multi-modal network flow problem with time windows. Due to the nature of this problem, the size of the...