© Joint Determination Of Order Quantity And Reorder Point Of Continuous Review Model Under Quantity And Freight Rate Discounts Darwish, MA PERGAMON-ELSEVIER SCIENCE LTD, COMPUTERS OPERATIONS RESEARCH; pp: ; Vol: 35 King Fahd University of Petroleum & Minerals Summary The increased emphasis on transportation costs has enhanced the need to develop models with transportation consideration explicitly. However, in stochastic inventory models, the transportation cost is considered implicitly as part of fixed ordering cost and thus is assumed to be independent of the size of the shipment. As such, the effect of the transportation and purchasing costs are not adequately reflected in final planning decisions. In this paper, transportation and purchasing considerations are integrated with continuous review inventory model. The objective is to view the system as an integrated whole and determine the lot size and reorder point which minimize the expected total cost per unit time. In addition, procedures are developed to solve the proposed models. Numerical experiments are also performed to explore the effect of key parameters on lot size, reorder point and expected total cost. The new models have a significant impact on lot size, reorder point and expected total cost. Savings up to 17.15% of the expected total cost are realized when using the proposed models. (c) 2007 Elsevier Ltd. All rights reserved. References: 1. ABAD PL, 2005, INT J PROD ECON, V95, P297, DOI /j.ijpe ABAD PL, 2006, INT J SERVICES OPERA, V2, P95 4. ABAD PL, 2007, EUR J OPER RES, V182, P1073, DOI /j.ejor AXSATER S, 1996, MANAGE SCI, V42, P830 Copyright: King Fahd University of Petroleum & Minerals;

© AXSATER S, 2000, INVENTORY CONTROL AXSATER S, 2006, EUR J OPER RES, V174, P480, DOI /j.ejor AXSATER S, 2007, EUR J OPER RES, V176, P880, DOI /j.ejor BAUMOL WJ, 1970, MANAGE SCI, V16, P413 BROWNE S, 1991, ANN APPL PROBAB, V1, P419 BURWELL TH, 1997, INT J PROD ECON, V48, P141 CAKANYILDIRIM M, 2000, INT J PROD ECON, V68, P217 CARTER JR, 1995, DECISION SCI, V26, P819 CARTER JR, 1996, PRODUCTION INVENTORY, V37, P58 CETINKAYA S, 2006, EUR J OPER RES, V171, P1094, DOI /j.ejor ERTOGRAL K, 2007, EUR J OPER RES, V176, P1592, DOI /j.ejor FEDERGRUEN A, 1992, OPER RES, V40, P808 GHALEBSAZJEDDI B, 2004, EUR J OPER RES, V158, P456, DOI /S (03) HERRON D, 1983, APPL MANAGEMENT SCI HILL RM, 2007, EUR J OPER RES, V176, P956, DOI /j.ejor JOHANSEN SG, 1998, INT J PROD ECON, V56, P275 KUKREJA A, 2005, COMPUT OPER RES, V32, P2059, DOI /j.cor LEE CY, 1986, IIE TRANS, V18, P318 LEE JY, 2007, INT J PROD ECON, V105, P204, DOI /j.ijpe MOHEBBI E, 2006, EUR J OPER RES, V175, P992, DOI /j.ejor NAHMIAS S, 2005, PRODUCTION OPERATION RODRIGUE J, 2004, TRANSPORT GEOGRAPHY RUSSELL RM, 1991, DECISION SCI, V22, P940 SALAMEH MK, 2003, INT J PROD ECON, V85, P91, DOI /S (03) SARMIENTO AM, 1999, IIE TRANS, V31, P1061 SILVER E, 1998, INVENTORY MANAGEMENT SONG JS, 1994, MANAGE SCI, V40, P603 SWENSETH SR, 2002, INT J PROD ECON, V77, P113 TERSINE RJ, 1989, LOGISTICS TRANSPORTA, V25, P1 TERSINE RJ, 1991, DECISION SCI, V22, P1171 WANG YZ, 1996, INT J PROD ECON, V45, P381 For pre-prints please write to: Copyright: King Fahd University of Petroleum & Minerals;