Jaromír Skorkovský KPH-ESF-MU Brno, Czech Republic Brno, 2015.

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Presentation transcript:

Jaromír Skorkovský KPH-ESF-MU Brno, Czech Republic Brno, 2015

Type of material Raw material Semi-products (WIP) Final products Questions : How much do we have to order (order quantity=Q) When do we have to order (question related to Reorder Level=Reorder Point) Simple questions -qualifications

Type of demands Deterministic – known demand Probabilistic Under risk (distribution of demand is known) Under uncertainty (distribution of demand is not known) Lead time (time between placing order and getting items) Demands

Costs

Prerequisites Single item only Continuous demand =D No stock shortage Instantaneous shipment Lead time= constant EOQ model 1 D Q T D T time Notice, that inventory never goes below zero; shortages do not exist !!

Carrying cost (will be presented -see next slide) 8 Resource- Taylor- Wikipedia To verify this relationship, we can specify any number of points values of Q over the entire time period, t, and divide by the number of points. For example, if Q = 5,000, the six points designated from 5,000 to 0, as shown in shown figure, are summed and divided by 6:

EOQ model 1

EOQ 10

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