year 2005 
author Sungwon Jung 
Keyword Supply Chain Management, Master Planning, Memetic Algorithm, Multi-Level Lot-Sizing, Multi-Level Capacitated Lot-Sizing 
Abstract Nowadays, the rapid development of information technology has created the environment in which production plants in supply chain can cooperate to make a production plan for the master product of each facility units in the aspect of the supply chain. This type of multi facility production plans can be viewed as a multi stage production planning which is well known and documented in literature.

Multi stage production planning is known as a so-called NP hard problem which can be solved optimally in a reasonable CPU time only when the problem instance is very small. Hence, many researchers have focused on the heuristic methods to address large scale problems of this kind. Previous studies on multi stage production planning can be divided into two types: the multi-level lot sizing (MLLS) which considered only cost optimization and the multi-level capacitated lot sizing (MLCLS) which considered capacity constraints as well as cost optimization. MLLS is used when it is necessary to make a production plan to meet a given demand in a relatively short time, with a sufficient extra production capacity. MLCLS aims to develop a production plan taking into account production capacity limits.

In this thesis, the author identifies limitations of the algorithms of previous studies for the multi stage production planning and proposes the cost-effective heuristics to provide high quality solutions for MLLS and MLCSL. The proposed algorithms are developed based on the memetic algorithms which are population-based heuristic search approaches for optimization problems. The most crucial and distinctive feature of the algorithm for MLLS proposed in this study is the incorporation of local refinement procedure based on the concept of benchmark. The proposed local refinement procedure allows recovering any temporary degradation of the solution in the operation of a population. In the case of the algorithm for MLCLS, we contrive the solution representation scheme which guarantees to generate feasible solution with regard to production capacity constraints.

The benchmark-based local-refinement procedure proposed by this study will be well applicable to other problems which are otherwise difficult to refine their solution. In addition, the solution representation considering the capacity constraint will be a good foundation for the development of algorithms for optimizing the more complex supply chain problems. 
c PhD 

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번호 c year 제목 author
111 MS  2014  A hybrid algorithm for production scheduling under Make-to-Order environment : a case study from the transformer industry Sung Bum Jun 
110 PhD  2014  A study on integrative decision-making system for reconfigurable manufacturing cells Jin Wu Seo 
109 PhD  2014  Multi-level job scheduling in a flexible discrete-part production environment Hong Bum Na 
108 MS  2014  A study on operational models for electric vehicle battery switch stations in smart grid environment Dong Hyun Kim 
107 PhD  2013  A study on production scheduling problems considering differential electricity pricing and distributed generations Jun Young Moon 
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103 MS  2012  Load Leveling in Project Scheduling Considering Work-in-Process Inventory [18] Sungjin Lee 
102 MS  2012  Load Leveling in Project Scheduling Using Partial Adjustment and Diffusional Relaxation Method [12] SungHoon KIM 
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97 MS  2011  A Study on Real Time Progress Monitoring Methodology and Effects based on RTLS in Project Shop [27] Kyounghwi Tae 
96 MS  2011  Intelligent service during middle-of-life phase of a product: Illustration of framework and its evaluation model [3] Soyeon Yoon 
95 MS  2011  A Study on RMC Scheduling using Simulation [19] Jeongho Park 
94 PhD  2010  Enhancing Flexibility and Responsiveness in Sales Order Management [54] Mokmin Park 
93 PhD  2010  Framework for Integrative SRM System and Collaboration Scorecard [26] Jongkyoung Park 
92 PhD  2009  A Study for Business Process Improvement Using Real-time Information of Unbalanced Work [19] Jaehyun Kong 
91 MS  2009  A Study on the Economic Feasibility of Automated Identification Technology on the ELV Management Process [25] file Kiheon Nam 
90 MS  2009  A Study on Mine Artillery Hit Using Simulation [3] Youngho Chung 
89 MS  2009  A Study on Integrated Risk Management in Supply Chain - Focusing on High-tech Electronic Industry [52] file Kanghyun Kim 
88 MS  2009  A Fuzzy-AHP based Decision making Model for ground operations [37] Youngkyun Lee 
87 MS  2008  An Study abou the Application and Effect of RFID Technology in the Activity Collecting Information to Improvement of Manufacturing Process [10] Sungho Jo 
86 PhD  2008  A study on integrated production planning and strategic framework in supply chain [15] Haejoong Kim 
85 MS  2008  Integration of RFID and Web Service Technology in Manufacturing Systems [20] file Gunnam Ong 
84 MS  2008  A study on supplier's performance measurements for a supply chain on a new product environment [1] Jungsub Lee 
83 MS  2007  A Simulation Study on the Impact of RFID Technology on the Supply Chain Counting Process [13] file Jangwon Cho 
82 PhD  2007  A Study on MRP Process Improvement in a Grid Enabled APS [2] file Hyoung-Gon Lee 
81 MS  2007  A Study on Utility Value and Fairness of Information Sharing in Supply Chain [18] file Myongran Oh 
80 MS  2007  A Study on Project Risk Management based on Earned Value Management [25] file Hyunil Noh 
79 MS  2007  A Study on BOM for Enhancing Efficiency of Reverse Supply Chain [14] Jinseon Yoo 
78 MS  2007  A Study on the Valuation of a Supply Chain Considering Management Efficiency and Environmental Effect [53] Jiyoun Kim 
77 MS  2006  A Study on the Assessment Method of Installation and Operation Cost in a Reverse Supply Chain [2] file Hyunjong Jeong 
76 MS  2006  A Framework for the ubiquitous MES using RFID and Web services Technology [25] Manchul Han 
75 MS  2006  A Study on the Application of Group Technology for Naval Ship Design And Manufacturing: Relating to Platform Family Architecture [17] Gwangjae Park 
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71 MS  2005  Development of Reference Model and Strategic Road Map for the Implementation of a Reverse Supply Chain [183] Chihoon Lim 
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68 PhD  2005  A Study on the Integration of Quality Designing and Process Control in Steel Industry [15] Jonghan Kim 
67 MS  2004  A study on due-date assignment method in wafer fabrication facility producing multiple product types [3] Jaewon Park 
66 MS  2004  A Design on Cost-Estimation Support System for Injection Mold Using AI Method [12] Gunhee Kim 
65 MS  2004  A Study on business process model for extended and integrated supply chain planning : Focused on negotiation [5] Yuncheol Kang 
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62 PhD  2004  Ontology Development for e-Business Integration [26] Tai-Woo Chang