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Abstract Optimization met hods can be generally categrized as global or local. Global optimization methods are suitable for large scale problems that have many local optima. However, these methods require many more evaluations of functions to obtain acceptable optima compared with local optimization methods. however, local methods usually find only the relative optimum closest to the starting point. Various attempts have been made to combine local and global optimization to overcome the individual short comings. Lee and Roh used a GA to finde the starting point for the local optimization by the MFD. However, this method was not ver efficient. Porsani et al. used local optimization to improve the solution obtained from each global iteration of the GA. However, this method was also computationally expensive. We propose now a more efficient hybridization.
Publication Date 2001-11-01
Role Coauthor
Category Others

Kyu-Yeul Lee, Myung-Il Roh, "An Efficient Genetic Algorithm Using Gradient Information for Ship Structural Design Optimization", Journal of Ship Technology Research, Vol. 48, No. 4, pp. 161-170, 2001.11.01


List of Articles
번호 분류 제목 Publication Date
108 International Journal Xing Li, Myung-Il Roh, Seung-Ho Ham, "A Collaborative Simulation in Shipbuilding and the Offshore Installation Based on the Integration of the Dynamic Analysis, Virtual Reality, and Control Devices", IJNAOE, Vol. 11, No. 2, pp. 699-722, 2019.07.01 file 2019-07-01
107 International Journal Won-Jae Lee, Myung-Il Roh, Hye-Won Lee, Jisang Ha, Yeong-Min Cho, Nam-Sun Son, “Detection and Tracking for the Awareness of Surroundings of a Ship Based on Deep Learning”, Journal of Computational Design and Engineering, Vo. 8, No. 5 file 2021-10-01
106 International Journal Tae-Sub Um, Myung-Il Roh, "Optimal Dimension Design of a Hatch Cover for Lightening a Bulk Carrier", International Journal of Naval Architecture and Ocean Engineering, Vol. 7, No. 2, pp. 270-287, 2015.03.01 file 2015-03-01
105 International Journal Sung-Woo Park, Myung-Il Roh, Min-Jae Oh, Seong-Hoon Kim, "Association Analysis of Piping Materials of an Offshore Structure Using Big Data Technology", Journal of Ship Production and Design, Vol. 35, No. 3, pp. 220-230, 2019.08.01 file 2019-08-01
104 International Journal Sung-Min Lee, Myung-Il Roh, Ki-Su Kim, Seung-Ho Ham, "Optimum Design of Lug Arrangement Based on Static and Dynamic Analyses for Block Lifting", Journal of Ship Production and Design, Vol. 34, No. 2, pp. 119-133, 2018.05.01 file 2018-05-01
103 International Journal Sung-Min Lee, Myung-Il Roh, Ki-Su Kim, Hoe-Ryong Jung, Jong-Jin Park, "Method for a Simultaneous Determination of the Path and the Speed for Ship Route Planning Problems", Ocean Engineering, Vol. 157, pp. 301-312, 2018.06.01 file 2018-06-01
102 International Journal Sung-Kyoon Kim, Myung-Il Roh, Ki-Su Kim, “Evaluation of Feasibility Index in the Arrangement Design of an Offshore Topside based on the Automatic Transformation of Experts’ Knowledge and the Fuzzy Logic”, Ocean Engineering, Vol. 130, 2017.01.15 file 2017-01-15
101 International Journal Sung-Kyoon Kim, Myung-Il Roh, Ki-Su Kim, “Arrangement Method of Offshore Topside Based on an Expert System and Optimization Technique”, Journal of Offshore Mechanics and Arctic Engineering, Vol. 139, No. 2, pp. 1-19, 2017.04.01 file 2017-04-01
100 International Journal Sung-Jun Lee, Myung-Il Roh, Min-Jae Oh, "Image-based Ship Detection Using Deep Learning", Ocean Systems Engineering, Vol. 10, No. 4, pp. 415-434, 2020.12.01 file 2020-12-01
99 International Journal Sun-Kyung Jung, Myung-Il Roh, Ki-Su Kim, "Arrangement Method of a Naval Surface Ship Considering Stability, Operability, and Survivability", Ocean Engineering, Vol. 152, pp. 316-333, 2018.02.23 file 2018-02-23
98 International Journal Sol Ha, Tae-Sub Um, Myung-Il Roh, Hyun-Kyoung Shin, “A Structural Weight Estimation Model of FPSO Topsides Using an Improved Genetic Programming Method”, Ships and Offshore Structures, Vol. 12, No. 1, pp. 43-55, 2017.01.01 file 2017-01-01
97 International Journal Sol Ha, Seong-Ho Seo, Myung-Il Roh, Hyun-Kyoung Shin, "Simplified Nonlinear Model for the Weight Estimation of FPSO Plant Topside Using the Statistical Method", Ships and Offshore Structures, Vol. 11, No. 6, pp. 603-619, 2016.09.01 file 2016-09-01
96 International Journal Sol Ha, Nam-Kug Ku, Myung-Il Roh, Kyu-Yeul Lee, "Cell-Based Evacuation Simulation Considering Human Behavior in a Passenger Ship", Ocean Engineering, Vol. 53, pp. 138-152, 2012.10.01 file 2012-10-01
95 International Journal Sol Ha, Nam-Kug Ku, Myung-Il Roh, Ho-Jin Hwang, "Multibody System Dynamics Simulator for Process Simulation of Ships and Offshore Plants in Shipyards", Advances In Engineering Software, Vol. 85, pp. 12-25, 2015.07.01 file 2015-07-01
94 International Journal Sol Ha, Nam-Kug Ku, Myung-Il Roh, "Event-based Scenario Manager for Multibody Dynamics Simulation of Heavy Load Lifting Operations in Shipyards", International Journal of Naval Architecture and Ocean Engineering, Vol. 8, No. 1, pp. 83-101, 2016.01.01 file 2016-01-01
93 International Journal Sol Ha, Ju-Hwan Cha, Myung-Il Roh, Kyu-Yeul Lee, "Implementation of the Submarine Diving Simulation in a Distributed Environment", International Journal of Naval Architecture and Ocean Engineering, Vol. 4, No. 3, pp. 211-227, 2012.09.01 file 2012-09-01
92 International Journal Seung-Min Lee, Jong-Hyeok Lee, Myung-Il Roh, Ki-Su Kim, Seung-Ho Ham, Hye-Won Lee, "An Optimization Model of Tugboat Operation for Conveying a Large Surface Vessel", Journal of Computational Design and Engineering, Vol. 8, No. 2, 2021.04.01 file 2021-04-01
91 International Journal Seung-Ho Ham, Myung-Il Roh, “Time-domain Structural Analysis During Block Turnover and Lifting Using 2D Flexible Multibody Dynamics”, Marine Structures, Vol. 75, pp. 102841.1-26, 2021.01.01 file 2021-01-01
90 International Journal Seung-Ho Ham, Myung-Il Roh, Luman Zhao, "Integrated Method of Analysis, Visualization, and Hardware for Ship Motion Simulation", Journal of Computational Design and Engineering, Vol. 5, No. 3, pp. 285-298, 2018.07.01 file 2018-07-01
89 International Journal Seung-Ho Ham, Myung-Il Roh, Jung-Woo Hong, “Dynamic Effect of a Flexible Riser in a Fully Connected Semisubmersible Drilling Rig Using the Absolute Nodal Coordinate Formulation”, Journal of Offshore Mechanics and Arctic Engineering, 2017.10.01 file 2017-10-01
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