Page 298 - DMGT206_PRODUCTION_AND_OPERATIONS_MANAGEMENT

Unit 14: Operations Scheduling

Self Assessment Notes

Fill in the blanks:
13. The major advantage of reservation systems is the ………………, they give service
managers to plan the efficient use of facilities.
14. ……………… techniques have been developed to enhance demand for services as well as
minimize the negative impacts of reservation systems.
15. ……………… can be flexed by buying additional inexpensive plant, recruiting unskilled
or semiskilled staff, or sub-contracting, or of course short term overtime.

14.6 Summary

 Scheduling is the problem of assigning a set of tasks to a set of resources subject to a set of
constraints.
 Capacity has two basic types of constraints—a hard ceiling and a soft ceiling.
 Sequencing is basically an order in which the jobs, waiting before an operational facility,
are processed.
 A shop load is approved from the most heavily loaded work center to the slightest loaded.
 An index method is a heuristic technique of loading, which would yield better results than
the simple and intuitive method.
 Gantt chart is a visual tool that takes two basic forms—the job or activity progress chart
and the machine chart. Both types of Gantt charts present the ideal and the actual use of
resources over time.
 The Gantt chart takes two basic forms which are The job or activity progress chart and The
machine chart.
 A schedule obtained by sequencing jobs in increasing order of processing times is called
a shortest processing time (SPT) rule.
 Where demand is known in advance or can be forecast, a way to manage capacity is to
schedule customers for arrival times and definite periods of service time.

14.7 Keywords

Gantt Chart: It is a visual tool that takes two basic forms—the job or activity progress chart and
the machine chart. Both types of Gantt charts present the ideal and the actual use of resources
over time.
Hard Ceilings: It is for capacity are limits that make the capacity extremely difficult to flex.
Scheduling: It is the problem of assigning a set of tasks to a set of resources subject to a set of
constraints.

Sequencing: It is basically an order in which the jobs, waiting before an operational facility, are
processed.
Soft Ceilings: It is for capacity are limits that make the capacity reasonably easy to flex.

14.8 Review Questions

1. The main components of a planning and scheduling model require that you define the
variables. What would it include?

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