16 research outputs found
Real-time train driver rescheduling by actor-agent techniques
Passenger railway operations are based on an extensive planning process for generating the timetable, the rolling stock circulation, and the crew duties for train drivers and conductors. In particular, crew scheduling is a complex process. After the planning process has been completed, the plans are carried out in the real-time operations. Preferably, the plans are carried out as scheduled. However, in case of delays of trains or large disruptions of the railway system, the timetable, the rolling stock circulation and the crew duties may not be feasible anymore and must be rescheduled. This paper presents a method based on multi-agent techniques to solve the train driver rescheduling problem in case of a large disruption. It assumes that the timetable and the rolling stock have been rescheduled already based on an incident scenario. In the crew rescheduling model, each train driver is represented by a driver-agent. A driver-agent whose duty has become infeasible by the disruption starts a recursive task exchange process with the other driver-agents in order to solve this infeasibility. The task exchange process is supported by a route-analyzer-agent, which determines whether a proposed task exchange is feasible, conditionally feasible, or not feasible. The task exchange process is guided by several cost parameters, and the aim is to find a feasible set of duties at minimal total cost. The train driver rescheduling method was tested on several realistic disruption instances of Netherlands Railways (NS), the main operator of passenger trains in the Netherlands. In general the rescheduling method finds an appropriate set of rescheduled duties in a short amount of time. This research was carried out in close cooperation by NS and the D-CIS Lab
Integration of Maintenance Constraints in Scheduling: Fuzzy Modelling and Multi-Agent Approach
Caracteristiques des nouveaux composants de protection
SIGLECNRS-CDST / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc
Modeling and Simulation Dictionary - English-French-Turkish
ISBN 2―9524747-0―2National audienceno abstrac
Mazzolari e il cattolicesimo italiano prima del Concilio Vaticano 2.
Il volume ricostruisce il quadro del mondo cattolico italiano negli anni precedenti il Concilio, soffermandosi in particolare sui primi germogli di una nuova sensibilit\ue0 religiosa. La ricerca si avvale dell'apporto di studiosi stranieri che hanno analizzato il giudizio che il cattolicesimo tedesco, francese, svizzero e inglese hanno formulato nei confronti delle esperienze italiane
Influence of Total Parenteral Nutrition on Tumor Growth and Polyamine Biosynthesis of Fibrosarcoma-Bearing Rats after Induced Cachexia
Le Concile Vatican II et le monde des religieux
L’historiographie du Concile Vatican II accorde une place limitée au monde des religieux. Ce constat a guidé le projet du colloque international réuni à Rome en 2014 à l’initiative du LARHRA pour proposer une approche globale et évaluer les variables liées à la diversité des familles religieuses, des contextes sociaux ou ecclésiaux et des réalités nationales ou transnationales. En se centrant sur l’Europe occidentale et l’Amérique du Nord et en croisant les études de cas, il a permis de mieux saisir la place de l’événement conciliaire dans les dynamiques de changement à l’œuvre dans les décennies 1950, 1960 et 1970