This work introduces a novel MILP formulation for reactive scheduling of multiproduct batch plants to optimally generate updated schedules due to the occurrence of unforeseen events. It can also be used to improve a non-optimal production schedule before it is executed. The approach is based on a continuous-time problem representation that takes into account the schedule in progress, the update...

With the increase of train density on line in high-speed railways (HSRs), delay propagation occurs frequently. In this article, we investigate a real-time rescheduling problem to restore HSR operation from caused by disturbance. A model is suggested considering relationships between both running and departure times at disturbance area, which makes more precise. The objective planned minimize to...

The practitioners and researchers has received considerable attention solving complex optimization problems with metaheuristic algorithms during the past decade. Many of these algorithms are inspired by various phenomena of nature. One of the promising solutions for secure and continuous power flow in the transmission line is rescheduling based congestion management approach but the base proble...

In most real production environment, schedules are usually inevitable with the presence of a variety of unexpected disruptions. Thus it is necessary to develop predictive/reactive schedules which can absorb disruptions while maintaining high shop performance. In this paper, a robust predictive/reactive scheduling method is developed for solving job shop scheduling in dynamic environment. It con...

the paper discusses the current state of research concerning railway network timetabling and traffic management. timetable effectiveness is governed by frequency, regularity, accurate running, recovery and layover times, as well as minimal headway, buffer times and waiting times. analytic (queuing) models and stochastic microsimulation are predominantly used for estimation of waiting times and ...

Demand for rail travel has grown strongly within the last few years and growth is projected to continue in coming years. While central parts of the European rail network are operated punctually at its capacity limits, building new tracks is very cost intensive and thus only possible in exceptional cases. Adding new services to satisfy increasing demand is often achieved by reducing buffer times...

We describe a reactive replanning technique developed to enable transportation planning in a highly dynamic, complex and critical domain: the military aeromedical evacuation of patients to medical treatment facilities. In early 1993, the Department of Defense tasked the U.S. Transportation Command (USTRANSCOM) to consolidate the command and control of medical regulation (assigning patients to m...

This paper deals with multiobjective rescheduling on parallel machines for alteration of due date. The objectives of this rescheduling problem are to minimize both the total tardiness and a difference of schedule from that before the alteration. Genetic algorithms with various individual descriptions are applied to the problem in order to find the Pareto optimal solutions. In particular, two de...

The papers presents an integrated approach to articulate software process plans that fail. The approach, called articulation, repairs a plan when a diagnosed failure occurs and reschedules changes that ensure the plan's continuation. In implementing articulation, we combine diagnosis, replanning, and rescheduling into a powerful mechanism supporting process-based software development. Use of ar...