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Machinery, 2020
Milling, turning, EDM, profiling and metrology investments are all on the agenda in Machinery’s latest subcontracting sector round-up. Steed Webzell has the details
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Milling, turning, EDM, profiling and metrology investments are all on the agenda in Machinery’s latest subcontracting sector round-up. Steed Webzell has the details
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The Job-Shop Problem and Immediate Selection
Annals of Operations Research, 1994For solving job-shop problems using a branch-and-bound method it is important to introduce order relations before the branching starts in order to reduce the computational effort. This may be done by using immediate selection methods to fix as many order relations as possible.
Peter Brucker +2 more
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Minimizing Makespan in No-Wait Job Shops
Mathematics of Operations Research, 2005In this paper, we study polynomial time approximation schemes (PTASes) for the no-wait job shop scheduling problem with the makespan objective function. It is known that the problem is MaxSNP-hard in the case when each job is allowed to have three operations or more. We show that if each job has at most two operations, the problem admits a PTAS if the
Bansal, N., Mahdian, M., Sviridenko, M.
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1996
Once the management requirements planning (MRP) system has projected a plan, the remaining task is to execute the plan. Through proper consideration of capacity, the evolving plan may be doable, but “doing it”—the execution— can be most challenging, especially in a job-shop environment. MRP was developed as a tool to assist in the complicated dependent
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Once the management requirements planning (MRP) system has projected a plan, the remaining task is to execute the plan. Through proper consideration of capacity, the evolving plan may be doable, but “doing it”—the execution— can be most challenging, especially in a job-shop environment. MRP was developed as a tool to assist in the complicated dependent
openaire +1 more source
1996
In this chapter we are going to consider scheduling tasks on dedicated processors or machines. We assume that tasks belong to a set of jobs, each of which is characterized by its own machine sequence. We will assume that any two consecutive tasks of the same job are to be processed on different machines. The type of factory layout is the job shop.
Jacek Błażewicz +4 more
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In this chapter we are going to consider scheduling tasks on dedicated processors or machines. We assume that tasks belong to a set of jobs, each of which is characterized by its own machine sequence. We will assume that any two consecutive tasks of the same job are to be processed on different machines. The type of factory layout is the job shop.
Jacek Błażewicz +4 more
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1992
The job shop scheduling problem is described as follows. Given are a set of jobs and a set of machines. Each machine can handle at most one job at a time. Each job consists of a chain of operations, each of which needs to be processed during an uninterrupted time period of a given length on a given machine.
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The job shop scheduling problem is described as follows. Given are a set of jobs and a set of machines. Each machine can handle at most one job at a time. Each job consists of a chain of operations, each of which needs to be processed during an uninterrupted time period of a given length on a given machine.
openaire +1 more source
Adaptive scheduling for assembly job shop with uncertain assembly times based on dual Q-learning
International Journal of Production Research, 2021Haoxiang Wang
exaly