5,742 research outputs found

    Single machine parallel-batch scheduling with deteriorating jobs

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    AbstractWe consider several single machine parallel-batch scheduling problems in which the processing time of a job is a linear function of its starting time. We give a polynomial-time algorithm for minimizing the maximum cost, an O(n5) time algorithm for minimizing the number of tardy jobs, and an O(n2) time algorithm for minimizing the total weighted completion time. Furthermore, we prove that the problem for minimizing the weighted number of tardy jobs is binary NP-hard

    Due-date assignment and single machine scheduling with deteriorating jobs

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    Author name used in this publication: T. C. E. ChengAuthor name used in this publication: L. KangAuthor name used in this publication: C. T. Ng2003-2004 > Academic research: refereed > Publication in refereed journalAccepted ManuscriptPublishe

    Scheduling linear deteriorating jobs with an availability constraint on a single machine

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    2006-2007 > Academic research: refereed > Publication in refereed journalAccepted ManuscriptPublishe

    Single-machine scheduling with deteriorating jobs under a series-parallel graph constraint

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    Author name used in this publication: C. T. NgAuthor name used in this publication: T. C. E. Cheng2007-2008 > Academic research: refereed > Publication in refereed journalAccepted ManuscriptPublishe

    Competitive two-agent scheduling with deteriorating jobs on a single parallel-batching machine

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    We consider a scheduling problem in which the jobs are generated by two agents and have time-dependent proportional-linear deteriorating processing times. The two agents compete for a common single batching machine to process their jobs, and each agent has its own criterion to optimize. The jobs may have identical or different release dates. The batching machine can process several jobs simultaneously as a batch and the processing time of a batch is equal to the longest of the job processing times in the batch. The problem is to determine a schedule for processing the jobs such that the objective of one agent is minimized, while the objective of the other agent is maintained under a fixed value. For the unbounded model, we consider various combinations of regular objectives on the basis of the compatibility of the two agents. For the bounded model, we consider two different objectives for incompatible and compatible agents: minimizing the makespan of one agent subject to an upper bound on the makespan of the other agent and minimizing the number of tardy jobs of one agent subject to an upper bound on the number of tardy jobs of the other agent. We analyze the computational complexity of various problems by either demonstrating that the problem is intractable or providing an efficient exact algorithm for the problem. Moreover, for certain problems that are shown to be intractable, we provide efficient algorithms for certain special cases

    Single-machine scheduling with deteriorating jobs and learning effects to minimize the makespan

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    2006-2007 > Academic research: refereed > Publication in refereed journalAccepted ManuscriptPublishe
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