نتایج جستجو برای: rescheduling

تعداد نتایج: 1111  

2010
Junchao Xiao Leon J. Osterweil Qing Wang Mingshu Li

Good resource scheduling plays a pivotal role in successful software development projects. However, effective resource scheduling is complicated by such disruptions as requirements changes, urgent bug fixing, incorrect or unexpected process execution, and staff turnover. Such disruptions demand immediate attention, but can also impact the stability of other ongoing projects. Dynamic resource re...

1996
Sushil J. Louis Zhijie Xu

We combine genetic algorithms and case-based reasoning principles to nd optimally directed solutions to open shop scheduling and open shop rescheduling problems. Appropriate solutions to open shop scheduling problems are injected into the genetic algorithm's population to speed up and augment genetic search on a related open shop rescheduling problem. Preliminary results indicate that the combi...

Journal: :Public Transport 2010
Erwin J. W. Abbink David G. A. Mobach Pieter-Jan Fioole Leo G. Kroon Eddy H. T. van der Heijden Niek J. E. Wijngaards

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. How...

2012
Richard E. Kavanagh Karim Djemame

We introduce our Grid broker that uses SLAs in job submission with the aim of ensuring jobs are computed on time and on budget. We demonstrate our broker’s ability to perform negotiation and to select preferentially higher priority jobs, in a tender market and discuss the architecture that makes this possible. We additionally show the effects of rescheduling and how careful consideration is req...

1993
Didier Keymeulen

Martine de Gerlache Prog Laboratory Vrije Universiteit Brussel Pleinlaan 2, 1050 Brussels Belgium Airline companies usually schedule their flights and crews well in advance to optimize their crew pools activities. Many events such as flight delays or the absence of a member require the crew pool rescheduling team to change the initial schedule (rescheduling). In this paper, we show that the neu...

2000
Guilherme E. Vieira Jeffrey W. Herrmann

In dynamic, stochastic manufacturing systems, production planners and manufacturing engineers can benefit from understanding how rescheduling strategies affect system performance. This knowledge will help these experts design and operate better manufacturing planning and control systems. This paper presents new analytical models that can predict the performance of rescheduling strategies and qu...

Journal: :Mathematical and Computer Modelling 2007
Tadeusz Sawik

New algorithms based on mixed integer programming formulations are proposed for reactive scheduling in a dynamic, maketo-order manufacturing environment. The problem objective is to update a long-term production schedule subject to service level and inventory constraints, whenever the customer orders are modified or new orders arrive. Different rescheduling policies are proposed, from a total r...

Journal: :Eng. Appl. of AI 2015
Junqing Li Quan-Ke Pan Kun Mao

In this study, we proposed a discrete teaching-learning-based optimisation (DTLBO) for solving the flowshop rescheduling problem. Five types of disruption events, namely machine breakdown, new job arrival, cancellation of jobs, job processing variation and job release variation, are considered simultaneously. The proposed algorithm aims to minimise two objectives, i.e., the maximal completion t...

2015
Twan Dollevoet Dennis Huisman Leo G. Kroon Lucas P. Veelenturf Joris C. Wagenaar

Since disruptions in railway networks are inevitable, railway operators and infrastructure managers need reliable measures and tools for disruption management. Current literature on railway disruption management focuses most of the time on rescheduling one resource (timetable, rolling stock or crew) at the time. In this research, we describe an iterative framework in which all three resources a...

Journal: :Computers & Operations Research 2014

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