inventory theory

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13 Terms

1
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EOQ → q*

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2
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EOQ → orders p/yr

3
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EOQ → average inventory

4
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EOQ → total relevant cost [TC(q)]

at q* : ordering cost = holding cost

<p>at q* : ordering cost = holding cost </p><p></p>
5
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EOQ → lead time [reorder level]

lead time = L

daily demand = d = D/working days p/yr

<p>lead time = L</p><p>daily demand = d = D/working days p/yr</p>
6
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conditions for EPQ

  • production rate P is finite

  • P > D

7
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EPQ → q*

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8
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EPQ → max. inventory

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9
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EPQ → average inventory

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10
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conditions for EOQ with shortages

  • deterministic demand

  • backorders allowed

  • penalty cost given

11
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EOQ with shortages → q*

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12
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EOQ with shortages → max. inventory

<p></p>
13
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news vendor model

  • costs:

    • Cu = s - c

    • Co = c - v

  • critical fractile = Cu/Cu + Co