Exercises 6-10 Flashcards

1
Q

Priority rule FCFS

A

First Come, First Served

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2
Q

Priority rule SPT

A

Shortest processing time

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3
Q

Priority rule EDD

A

Earliest Due Date

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4
Q

Priority rule LPT

A

Longest processing time

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5
Q

Priority rule CR

A

Critical Ratio

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6
Q

Critical Ratio

A

Time remaining/Processing time remaining

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7
Q

Criteria to asses sequencing rules

A

Average finishing time (>)
Utilisation (>)
Average number of jobs in the system (<)
Average delay (<)

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8
Q

D

A

Demand (units per period)

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9
Q

c

A

Per unit value of the item

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10
Q

r

A

Annual cost of storing

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11
Q

IC

A

Issuing cost of a request

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12
Q

Q

A

Batch size

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13
Q

TC

A

Total annual cost

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14
Q

N

A

Number of annual requests

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15
Q

TC

A

D/QIC+Q/2r*c

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16
Q

Q*

A

Sqrt[2DIC/(r*c)]

17
Q

N =

A

D/Q

18
Q

Frequency of order

A

Time/N

19
Q

Number of containers =

A

(Demand during delivery time + Security Stock)/Number of pieces per container