Scheduling (Leaving Cert Applied Maths): Flashcards

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Scheduling
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What is scheduling?

Assigning workers to activities to achieve project objectives

What is minimum time scheduling?

Shortest completion time with unlimited workers available

What is early time?

Earliest possible time an event can occur

What is late time?

Latest time an event can occur without delaying project

What are critical activities?

Activities with zero total float that can't be delayed

Total float formula

Late time−Early time−Activity duration\text{Late time} - \text{Early time} - \text{Activity duration}

What is the critical path?

Path formed by activities with zero total float

What is a Gantt chart used for?

Visually displays when each activity should be scheduled

How to find minimum workers needed?

Count max number of activities happening simultaneously

Lower bound formula for workers

Sum of activity timesCritical time\frac{\text{Sum of activity times}}{\text{Critical time}}

How to prioritize with limited workers?

Assign activities in order of lowest late times

How to break ties in scheduling?

Use alphabetical order

Non-critical activities flexibility?

Have float time, can be delayed without affecting project

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