Functional requirements for a software cost database

Cost estimation of software development and control of the cost during the development, are difficult due to the lack of useful cost figures from previous projects, and consequently due to the lack of an accurate cost estimation and management method. This report describes the results of the first phase of a study to develop a software cost...

Comparison of some methods to determine the delays of landing aircraft with respect to runway capacity

The capacity of runways in use for landing aircraft may become the chief bottleneck of the capacity of airports. This runway capacity may result in long queues of aircraft waiting for landing, which in its turn results in unacceptable delays. Two analytic methods to determine these delays are described and the results are compared. The two...

A computer model for the dispersion of air pollution produced by airports

A computer model for the dispersion of air pollution is described. Assumptions are made such that the concentration of pollutants in the plume of a constant emitting point source has a Gaussian distribution ('Gaussian Plume'). The meteorological conditions are characterized by wind speed, wind direction, stability class and mixing depth. The...

Ship motions - A test case for a numerical approach