Keywords: Jet aircraft Fuel price Operating cost Leontief technology Translog a b s t r a c t Investigation of the airline response to a fuel price increase is in effect an investigation of the role of variable interactions in aircraft cost models. We examine the impact of fuel price on aircraft costs and airline operational strategies by developing two classes of operating cost models for jet ...

We show FIXP-hardness of computing equilibria in Arrow-Debreu exchange markets under Leontief utility functions, and Arrow-Debreu markets under linear utility functions and Leontief production sets, thereby settling these open questions [33]. As corollaries, we obtain FIXPhardness for piecewise-linear concave (PLC) utilities and for Arrow-Debreu markets under linear utility functions and polyhe...

This paper outlines the first experiences of an approach for automatically deriving information demands in order to provide users with demand-driven information supply and decision support. The presented approach is based on the idea that information demands with respect to work activities can be identified by examining the contexts in which they exist and that a suitable source for such contex...

The residential sector electricity demand has been increasing over the years, leading to an effort of power network components, namely during peak periods. This together with levels renewable-based energy generation and need ensure service quality, in terms voltage profile, is challenging distribution operation. Demand response can play important role facing these challenges, bringing several b...