Concept explainers
a.
Interpretation:The concept of term“flow shop” is to be explained.
Concept Introduction: This term relates to the manufacturing operations and signifies a distinct type of shop layout with equipment installed to provide a flow of products from one process to another. The products can be in single piece (the utopian objective) or may be in batches. The idea is to minimize the throughput time of the products and also the in-process inventory.
b.
Interpretation: The concept of theterm “job shop” is to be explained.
Concept Introduction: Theterm job shop relates toa manufacturing establishment having a number of processing stations with a capability of handling a variety of customer orders (may be customized) in small to medium batches. Say there are ‘n’ processing stations. The jobs that are received and accepted have to be processed on ‘m’ of THESE very stations where ‘m’ < ‘n’. If ‘m’ is > ‘n’, the job shop has arrangements to outsources the processes not available internally.
At any time, normally a job shop shall be working on more than one order.
C.
Interpretation:Sequential v/s parallel processing are to be briefly explained.
Concept Introduction: As the names imply:
- Sequential processing means a number of jobs being processed in a certain sequence i.e. one after the other.
- In parallel processing on the other hand, when there is more than one job to be processed, some of the jobs are processed simultaneously-means in parallel.
D.
Interpretation:The term “MAKESPAN” in manufacturing operations is to be explained.
Concept Introduction: In manufacturing, when there are a number of jobs in a particular schedule, MAKESPAN is the total time elapsed between the start of the first job (in the schedule) to the exit of the last item of the last job (in the schedule). Thus it is a parameter signifying the efficiency of the
E.
Interpretation:The term “tardiness” as applicable to manufacturing operations is to be explained.
Concept Introduction: Tardiness is a term used in scheduling as almost equivalent to ‘delay in delivery’. If during a specific time period, n jobs are to be delivered each with its specific delivery requirements and some jobs are sure to be late (due to the plant capacity), the total delay/s in all the jobs or the number of jobs delayed is called the tardiness.
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Production and Operations Analysis, Seventh Edition
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