Abstract
The timetabling problem consists in fixing a sequence of meetings between teachers and students in a given period of time, satisfying a set of different constraints. There are a number of different versions of the timetabling problem. These include school timetabling (where students are grouped in classes with similar degree plans), university timetabling (where students are considered individually) and examination timetabling (i.e. scheduling of university exams, avoiding student double booking). Several other problems are also associated with the more general timetabling problem, including room allocation. meeting scheduling, staff allocation and invigilator assignment. Many data formats have been developed for representing different timetabling problems. The variety of data formats currently in use, and the diversity of existing timetabling problems, makes the comparison of research results and exchange of data concerning real problems extremely difficult. In this paper we identify eight timetabling sub-problems and, based on that identification, we present a new language (UniLang) for representing timetabling problems. UniLang intends to be a standard suitable as input language for any timetabling system. It enables a clear and natural representation of data, constraints, quality measures and solutions for different timetabling (as well as related) problems, such as school timetabling, university timetabling and examination scheduling.

Abstract

Abstract
Simulation tools have gained an important role in scientific, academic and even business communities, allowing for time- and cost-effective research and development of solutions, more appealing training and learning activities or providing better tools for decision support. This is particularly true in the aviation and aeronautical areas. In this paper, we compare different control strategies for specified high-level maneuvers in aircraft within a simulation environment, each aircraft represented by an independent agent, focusing on communication necessities and maneuver effectiveness. A brief overview on the project's overall architecture and an outline of structured experiences, also known as missions, available within the simulator, show the potentials of the platform for the more comprehensive goals of this project, allowing the definition and execution of cooperative missions by a team of agents, such as surveillance and search & rescue operations.

Abstract

Abstract

Abstract
Intermodal interfaces are extremely important for the transportation system as a whole. Therefore, designing and dimensioning airport terminals' curbsides are major steps to improve passengers' experience. Indeed, evaluating such design is a critical task that must be performed to point out the best solution. This paper reports our modeling, implementing, and evaluating two curbside scenarios: one as currently applied to the Portela Airport, in Lisbon, and another alternative as proposed by a Transport Consultancy Agency. Our contribution results in the creation of a broader methodology to evaluate various scenarios, in addition to determining the best scenario between the ones presented and discussed in this paper. Some preliminary experiments are carried out, whose results are presented and discussed so as to compare their efficiency. Finally, we draw some conclusions and point out ways in which this work can be further extended.