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An efficient genetic algorithm for the traveling salesman problem with precedence constraints

Moon, Chiung; Kim, Jongsoo; Choi, Gyunghyun; Seo, Yoonho - In: European Journal of Operational Research 140 (2002) 3, pp. 606-617

Persistent link: https://www.econbiz.de/10005287901

An optimal procurement policy for items with an inventory level-dependent demand rate and fixed lifetime

Hwang, Hark; Hahn, Kyu Hun - In: European Journal of Operational Research 127 (2000) 3, pp. 537-545

Persistent link: https://www.econbiz.de/10005095025

Joint price and lot size determination under conditions of permissible delay in payments and quantity discounts for freight cost

Shinn, Seong Whan; Hwang, Hark; Sung, Soo Park - In: European Journal of Operational Research 91 (1996) 3, pp. 528-542

Persistent link: https://www.econbiz.de/10005347440

An incremental discount pricing schedule with multiple customers and single price break

Kim, Kap H.; Hwang, Hark - In: European Journal of Operational Research 35 (1988) 1, pp. 71-79

Persistent link: https://www.econbiz.de/10005158405

A generalized ordering and recovery policy for reusable items

Choi, Dae-Won; Hwang, Hark; Koh, Shie-Gheun - In: European Journal of Operational Research 182 (2007) 2, pp. 764-774

Persistent link: https://www.econbiz.de/10005158682

Optimal control of work-in-process with dual limit switches in two-stage transfer line

Hwang, Hark; Koh, Shie-Gheun - In: European Journal of Operational Research 63 (1992) 1, pp. 66-75

Persistent link: https://www.econbiz.de/10005287823

A dynamic quantity discount lot size model with resales

Sohn, Kwon-Ik; Hwang, Hark - In: European Journal of Operational Research 28 (1987) 3, pp. 293-297

Persistent link: https://www.econbiz.de/10005240126

Incremental discount policy of cell-phone carrier with connection success rate constraint

Kim, Young Joo; Hwang, Hark - In: European Journal of Operational Research 196 (2009) 2, pp. 682-687

Korean mobile carriers have implemented various service plans to gain additional market share. One of them is incremental discount policy on the call rate in which subscriber pays less for calls longer than a prescribed length. In this paper, a mathematical model is developed to find an optimal...

Persistent link: https://www.econbiz.de/10005277485

A returns policy for distribution channel coordination of perishable items

Hahn, Kyu Hun; Hwang, Hark; Shinn, Seong Whan - In: European Journal of Operational Research 152 (2004) 3, pp. 770-780

Persistent link: https://www.econbiz.de/10005329998