The minimum routing and wavelength assignment (min-RWA) problem is a classic and challenging NP-hard combinatorial optimization problem which aims to reduce the required wavelengths in wavelength-division multiplexing optical networks. In order to tackle this problem, we present a...

Network planning models, which forecast the profitability of airline schedules, support many critical decisions, including equipment purchase decisions. Network planning models include an itinerary choice model which is used to allocate air total demand in a city pair to different itineraries....

This paper presents and compares two different solution approaches to optimize the glass collection process at a single intermunicipal authority in Belgium. First, a model enhancement approach is proposed to solve a shift scheduling optimization problem integrating the construction of glass...

In this paper, we use detailed information of weather conditions, Eurocontrol regulations and strikes to examine the main drivers of flight delays in six Spanish airports in the period 2017–2018. We show that external shocks are an important driver of delays for low-cost and dominant airlines...