PLI Lab Master of Science in Industrial Engineering alumnus
Doh, Hyoung Ho (도형호)
Research Area:


Occupation: Hanyang University
2009 M.S. Graduation Thesis:
Production Planning in Remanufacturing Systems: Mathematical Model and Solution Algorithms
Remanufacturing, one of the most advanced product recovery options, processes used or end-of-life products with disassembly, reprocessing, and reassembly operations in such a way that their qualities are as good as new in terms of appearance, reliability, and performance. Among various issues in remanufacturing, we focus on production planning over a given planning horizon for the objective of maximizing the total profit, i.e., difference between the revenues and relevant costs. The main decisions are: (a) number of products to be disassembled and disposed in each period; (b) number of parts and components to be reprocessed and disposed in each period; (c) number of parts and components to be purchased in each period; and (d) number of products to be reassembled in each period. In particular, we extend the existing model by incorporating setup costs and times. A mixed integer programming model is developed to represent the problem. Then, due to the complexity of the problem, heuristic algorithms, based on the linear programming-based technique, are suggested in this paper. Computational experiments were done on various test problems, and the results are reported.
Lab Seminars:
1. Mathematical formulations for the optimal sequencing and lot sizing in multi product synchronous assembly lines 2021.08.09
2. A deep reinforcement learning approach for chemical production scheduling 2021.02.08
3. Multi-stage multi-product multi-period production planning with sequence-dependent setups in closed-loop supply chain 2020.07.28
4. Generation expansion planning in multi electricity markets considering environmental impacts 2020.03.11
5. A neural network model for solving the lot-sizing problem 2019.07.17
6. A mathematical model for production planning in hybrid manufacturing remanufacturing systems 2019.01.07
7. Multi commodity, multi vehicle pick-up and delivery problem with time window 2018.08.08
8. Robust production planning and control for multi-stage systems with flexible final assembly lines 2018.02.06
9. A new silver-meal based heuristic for the single-item dynamic lot-sizing problem with returns and remanufacturing 2017.07.25
10. Dynamic lot-sizing for disassembly and reprocessing in remanufacturing systems 2017.01.10
11. Models and algorithms for the dynamic-demand joint replenishment problem 2016.08.18
12. The one-warehouse multi-retailer problem: reformulation, classification, and computational results 2016.07.19
13. A dynamic inventory model with supplier selection in a serial supply chain structure. 2016.02.16
14. Integrated Lot Sizing in Serial Supply Chains with Production Capacities. 2016.02.11
15. GRASP heuristic with path-relinking for the multi-plant capacitated lot sizing problem. 2015.01.13
16. A single-product parallel-facilities production-planning model. 2012.01.08
17. A Multi-product Dynamic Lot-size Model with Individual and Joint Set-Up Costs. 2011.8.16
18. Efficient, effective lot sizing for multistage production system. 2011.7.5
19. An Integration Model and its Extension for Disassembly Leveling and Lot-sizing for Multiple Product Types. 2011.12.21
20. A capacity-constrained multi-level inventory and production control problem. 2010.2.15
21. Minimum concave cost production system_a further generalization of multiechelon model. 2010.1.27
22. On the optimal design of the disassembly and recovert process (1.07) 2009
23. Deterministic Production Planning with Concave Cost and Capacity Constraints. (1.21) 2009
24. Capacitated dynamic lot sizing problems in closed-loop supply chain. (2.04) 2009
25. The market-orienred dynamic product recovery model in the just-in-time framework (3.04) 2009
26. An optimal inventory model for the intermediate echelon when repair is possible. (7.22) 2009
27. Capacipated dynamic lot sizing problems in closed-loop supply chain. (8.13) 2009
28. Solving mixed integer programming production planning problems with setups by shadow price information (07.09) 2008
29. On alternative mixed integer programming formulations and LP-based heuristics for lot-sizing with setup times (07.30) 2008
30. MIP-based heuristics for capacitated lotsizing problems (08.26) 2008
31. Optimal control of a one product recovery system with leadtimes (7.2) 2007
32. Production planning for closed-loop supply chains with product recovery and reuse: an analystical approach (7.18) 2007
33. Remanufacturing planning fir the reverse Wagner / Whitin models (8.14) 2007