Trimp, M.E.

stock penalty penalty costs level order method consumption report probability value inventory section rotterdam erasmu cost rate university december number 0.000 order quantity decision quantity decision rule distribution example period consumption rate table classification factor chapter formula user /company service penalty values service levels demand difference percentage criticality index parameter program equipment project purchase price purchase costs information company research /company conclusion criticality classification result figure introduction variance input variable service level computation erlang question inventory level appendix range factor variance method estimate moment plant month order costs supplier stock level erlang-k penalty time model analysis failure