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| Choi, Yoon Rak |
Ph.D., Seoul National Univ., 97 / MS, BS, Seoul National Univ., 88 /Marine Hydrodynamics /
yrchoi@ulsan.ac.kr |
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Position: Assistant Professor
Research area: Marine Hydrodynamics
Location: #41-208, Building 41
Telephone: +82 52 259 2158
Fax: +82 52 259 2836
Email: yrchoi@ulsan.ac.kr
Homepage: http://home.ulsan.ac.kr/user/yrchoi1/index.html
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| Research interests |
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Nonlinear wave loads and responses on floating body
Wave energy conversion
Hydrodynamic interaction between multiple bodies in waves
Wave-structure interaction of deformable body
Statics and dynamics of floating membrane structure
Nonlinear waves dynamics
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| Brief career history |
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1988 Bs, Seoul National University
1990 Ms, Seoul National University
1990-1992 Researcher, Hyundai Heavy Industries
1994-1995 Teaching Assistant, Seoul National University
1996-1996 Commissioned Researcher, Korea Institute of Machinery and Materials
1997 PhD, Seoul National University
1995-2003 Senior Researcher, Korea Research Institute of Ships and Ocean Engineering
2002-2003 Visiting Scholar, University of British Columbia, Canada
2003-2007 Assistant Professor, University of Ulsan
2007-present Associate Professor, University of Ulsan
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| Publications - Thesis |
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Slowly Varying Drift Forces on a Moored Floating Structure in Irregular Waves, MSc thesis, 1990, Seoul National University
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An Analysis of Second-Order Wave Forces by Using a Higher-Order Boundary Element Method, Ph.D. thesis, 1997, Seoul National University
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| Publications - International Journals |
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S.Y. Hong, J.H. Kim, S.K. Cho, Y.R. Choi, Y.S. Kim, "Numerical and experimental study on hydrodynamic interaction of side-by-side moored multiple vessels", Ocean Engineering, Vol.32 No.7, 783~801, 2005
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S. Hong, Y.R. Choi, J.B. Park, Y.K. Park, Y.H. Kim, "Experimental Study on the Vortex-Induced Vibration of Towed Pipes", J. Sound and Vibration. Vol.249 No.4, 649~661, 2002
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Y.R. Choi, S.Y. Hong, H.S. Choi, "An Analysis of Second-Order Wave Forces on Floating Bodies by Using a Higher-Order Boundary Element Method", Ocean Engineering, Vol.28 No.1, 117~138, 2001
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S.Y. Hong, Y.R. Choi, D.J. Kim, M.H. Kim, "Responses of a Barge-Mounted Platform in Waves and Currents", Int'l J. Offshore and Polar Engineering, Vol.9 No.4, 283~292, 1999
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Y.R. Choi, H.S.Choi, "Transient surge motion of a moored ship in random waves", Int'l J. Offshore and Polar Engineering, Vol.1 No.3, 239~241, 1991
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| Publications - Domestic Journals |
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Y.R. Choi, "An analytic analysis for a two-dimensional floating and fluid-filled membrane structure", Journal of Ocean Engineering and Technology, Vol.23 No.4, 32~37, 2009
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Y.R. Choi, "An Analytic Solution of the Shape of a Partially Filled, Submerged Membrane Container", Journal of Ocean Engineering and Technology, Vol.22 No.5, 39~43. 2008
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Y.R. Choi, "An Analytic Solution of the Shape of an Inclined, Partially Filled Membrane Container", Journal of Ocean Engineering and Technology, Vol.21 No.1, 45~50, 2007
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Y.R. Choi, J.H. Kim, Y.S. Kim, "An analysis of rolling performance for a barge-type FPSO", Journal of Ocean Engineering and Technology, Vol.19 No.3, 25~30, 2005
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S.Y. Hong, Y.R. Choi, S.W. Hong, "Analysis of hydrodynamic responses of a pontoon-type structure considering effect of wave breaker with underwater opening", Journal of The Society of Naval Architects of Korea, Vol.40 No.5, 53~59, 2003
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S.Y. Hong, Y.R. Choi, S.W. Hong, "Draft Effects on Hydroelastic Analysis of Pontoon-type VLFS", Journal of The Society of Naval Architects of Korea, Vol.39 No.4, 32~41, 2002
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E.C. Kim, H.S. Yoon, S.Y. Hong, Y.R. Choi, D.C. Hong, "Development of graphic user interface program for the ISO speed trial analysis method", Journal of Ships and Ocean Engineering, Vol.34, 113~120, 2002
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K.J. Kang, C.J. Lee, S.Y. Kim, Y.R. Choi, J.T. Lee, "Hydrodynamic performance of a 2,500-ton class trimaran", Journal of Ship and Ocean Technology, Vol.6, No.2, 23~36, 2002 |
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D.H. Lee, K.N. Cho, Y.R. Choi, S.Y. hong, H.S. Choi, "A time domain analysis for hydroelstic behavior of a mat-type large floating structure in calm water under dynamic loadings by mode superposition method", Journal of The Society of Naval Architects of Korea, Vol.38 No.4, 39~47, 2001
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K.J. Kang, S.Y. Kim, Y.K. Kim, Y.R. Choi, "A study on the seakeeping and maneuvering performance of a 2,500Ton class", Journal of Ships and Ocean Engineering, Vol.32, 97~103, 2001
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H.J. Kim, Y.R. Choi, S.Y. Hong, C.M. Lee, "Development of Seakeeping Test Techniques with a Free Running Model", Journal of Ships and Ocean Engineering, Vol.28, 101~112, 1999
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S. Hong, Y.R. choi, S.Y. Hong, "Effect of mooring line damping on the slow drift motion of turret moored vessel", Journal of Ships and Ocean Engineering, Vol.25, 77~82, 1997
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H.J. Kim, S.Y. Hong, Y.R. Choi, J.H. Kim, "A comparison study on hydrodynamic characteristics of barge with variation of bottom shape", Journal of Ships and Ocean Engineering, Vol.24, 30~42, 1997
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| Publications - International Conferences |
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K.J. Kang, C.J. Lee, S.Y. Kim, Y.J. Cho, Y.R. Choi, "Design and hydrodynamic performance of a frigate class trimaran", Proc. Design and Operation of Trimaran Ship. 185~194, 2004
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Y.R. Choi, J.H. Kim, M.J. Song, Y.S. Kim, "An experimental and numerical study of roll motions for a barge-type LNG FPSO", Proc. 14th Int¡®l Offshore & Polar Eng. Conf., Vol.1, 672~675, 2004
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E.C. Kim, C.D. Koh, C.J. Lee, S.Y. Kim, Y.R. Choi, "DEVELOPMENT OF 30 KNOT 340 TEU CLASS HIGH SPEED CONTAINER SHIP; CHUNGHAE-30", Proc. Int'l Conf. on Design and Operation of Container Ships, RINA, 105~111, 2003
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S.Y. Hong, J.H. Kim, H.J. Kim, Y.R. Choi, "Experimental Study on Behavior of Tandem and Side-by-Side Moored Vessels", Proc. 12th Int¡®l Offshore & Polar Eng. Conf., Vol.3, 841~847, 2002
Y.R. Choi, S.Y. Hong, "An Analysis of Hydrodynamic Interaction of Floating Multi-Body Using Higher-Order Boundary Element Method", Proc. 12th Int¡®l Offshore & Polar Eng. Conf., Vol.3, 303~308, 2002
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C.K. Yang, Y.R. Choi, H.J. Kim, K.Y. Hong, "A Study on the Hydrodynamic Behavior of Fisheries Cages in Waves", Proc. 12th Int¡®l Offshore & Polar Eng. Conf., Vol.1, 726~732, 2002
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S.Y. Hong, Y.R. Choi, S.W. Hong, "Analysis of Hydro-Elastic Response of Pontoon-Type VLFS Coupled with Floating Wave Breaker Using a Higher-Order Boundary Element Method", Proc. 12th Int¡®l Offshore & Polar Eng. Conf., Vol.1, 313~318, 2002
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C.K. Yang, Y.R. Choi, H.J. Kim, K.Y. Hong, K. Yano, "An experimental and numerical investigation on the hydrodynamic behavior of floating fisheries cages", Proc. Annual Meeting of Japan Society of Fisheries Engineering, 213~216, 2002
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K.J. Kang, S.Y. Kim, Y.R. Choi, "Seakeeping and Maneuvering Performances of the 2,500 tons Class Trimaran", Proc. 2nd Int'l Workshop on Ship Hydrodynamics, 38~45, 2001 |
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E.C. Kim, H.S. Yoon, S.Y. Hong, Y.R. Choi, "Evaluation and computer program on the speed trial analysis method of the ongoing work in ISO/TC8", Proc. 8th Int'l Symp. on Practical Design of Ships and Other Floating Structures, Vol.1. 525~532, 2001
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S.Y. Hong, Y.R. Choi, S.W. Hong, "Investigation of Draft Effects on Analysis of Hydroelastic Responses of Pontoon-Type VLFS", Proc. 11th Int'l Offshore and Polar Eng. Conf., Vol.1, 222~228, 2001
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Y.R. Choi, S.W. Hong, H.J. Kim, J.H. Kim, "Experimental Study on Wave Loads and Reponses of a Barge Mounted Plant with Dolphin-Fender Mooring System", Proc. 10th Int'l Offshore and Polar Eng. Conf., Vol.1, 204~210, 2000
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Y.R. Choi, S.Y. Hong, H.S. Choi, "An Analysis of Second-Order Wave Forces on Floating Bodies by Using a Higher-Order Boundary Element Method", Proc. 22nd Symposium on Naval Hydrodynamics, 432~444, 1998
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S.Y. Hong, Y.R. Choi, D.J. Kim, M.H. Kim, "Response of a Barge-Mounted Platform in Waves and Currents", Proc. 8th Int'l Offshore and Polar Eng. Conf., Vol.3, 454~464, 1998
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Y.R. Choi, H.S. Choi, "A hybrid method for computing 2nd-order wave forces on ocean structures", Proc. 2nd Int'l Conference on Hydrodynamics, Vol.1, 165~170, 1996
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W.S. Chee, Y.R. Choi, H.S. Choi, "Nonlinear diffraction of modulated waves by a thin wedge", Proc. 9th Int'l Workshop on Water Waves and Floating Bodies, 1994
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Y.R. Choi, Y.S. Won, H.S. Choi, "The motion behavior of a shuttle tanker connected to a submerged turret loading system", Proc. 4th Imt'l Offshore & Polar Engineering Conf., Vol.3, 275~282, 1994
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Y.R. Choi, H.S. Choi, "Transient surge motion of a moored ship in random waves", Proc. 1st Pacific/Asia Offshore Mech. Symp., Vol.2, 279~286, 1991
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| Publications - Domestic Conferences |
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Y.R. Choi, "Analytic Solutions for a Two-Dimensional Floating and Fluid-Filled Membrane Structure", Proc. Annual Autumn Meeting of the Korean Society of Ocean Engineers, 365~371, 2009
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H.T. Yeo, Y.R. Choi, "Hydroelastic Analysis of a Floating Fish Cage in Waves", Proc. Annual Meeting of the Korean Association of Ocean Science and Technology Societies, 1913~1916, 2009
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H. Isshiki, Y.R. Choi, B.S. Yoon, "Performance Estimation of a Wing by Lifting Line Theory", Proc. Annual Autumn Meeting of the Korean Society of Naval Architects, 94~97, 2008
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Y.R. Choi, H.T. Yeo, "An Analytic Analysis of the Static Shape of a Partially Filled, Submerged Membrane Container", Proc. Annual Autumn Meeting of the Korean Society of Ocean Engineers, 389~393, 2008
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Y.R. Choi, "An Analytic Approach for the Shape of a Two Dimensional Membrane Structure", Proc. Annual Meeting of the Korean Association of Ocean Science and Technology Societies, 2137~2142, 2008
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I.K. Park, Y.K. Son, Y.R. Choi, "A Conceptual Design of Deep-Sea Mooring Lines having Soft Stiffness with Composite Material", Proc. Annual Autumn Meeting of the Korean Society of Ocean Engineers, 172~185, 2007
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Y.R. Choi, J.H. Kim, M.J. Song, Y.S. Kim, "An analysis of rolling performance for a barge-type FPSO", Proc. Annual Autumn Meeting of the Korean Society of Ocean Engineers, 183~187, 2004
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Y.R. Choi, "Analysis of wave drift forces acting on a hydroelastic structure", Proc. Annual Spring Meeting of the Korean Society of Naval Architects, 162~167, 2004 |
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J.H. Kim, S.Y. Hong, S.K. Cho, Y.R. Choi, M.J. Song, D.S. Kim, "Experimental study on interaction of side-by-side moored vessels", Proc. Annual Spring Meeting of the Korean Society of Ocean Engineers, 208~213, 2003
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S.Y. Hong, J.H. Kim, Y.R. Choi, "Hydro-elastic Analysis of Pontoon-type VLFS with Breakwaters Using Eigen Function Expansion Method", Proc. Annual Spring Meeting of the Korean Society of Naval Architects, 243~250, 2003
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J.H. Kim, H.J. Kim, Y.R. Choi, S.Y. Hong, "Experimental study on interaction between tandem moored and side by side moored vessels", Proc. 46th Workshop on Ocean Engineering, 53~64, 2001
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Y.R. Choi, S.Y. Hong, "Analysis of hydrodynamic interaction of floating multi-body using higher-order boundary element method", Proc. Annual Autumn Meeting of the Korean Society of Naval Architects, 198~203, 2001
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S.Y. Hong, Y.R. Choi, S.W. Hong, "Analysis of Hydroelastic Response of a Pontoon-type Structure Considering Effect of Wave Breaker with Underwater Opening", Proc. Annual Autumn Meeting of the Korean Society of Naval Architects, 185~19, 2001
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S.Y. Hong, H.J. Kim, Y.R. Choi, Y.K. Shin, B.S. Yoo, S.J. Lee, "Performance evaluation of fin-stabilizer by model test and time-domain simulation", Proc. Annual Autumn Meeting of the Korean Society of Ocean Engineers, 86~90, 2001
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Y.H. Kim, J.B. Park, S. Hong, Y.R. Choi, "Vortex Induced Vibration of Circular Pipes ; the Experiment in a Water Tank", Proc. KSNVE Spring Annual Conference, 478-483, 2001
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K.J. Kang, S.Y. Kim, Y.K. Kim, Y.R. Choi, "A Study on the Seakeeping and Maneuvering Performance of a 2,500 Ton Class Trimaran", Proc. Annual Spring Meeting of the Korean Society of Naval Architects, 182~186, 2001
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Y.R. Choi, S.Y. Hong, K.N. Cho, D.H. Lee, H.S. Choi, "Hydroelastic Responses of a Mat-type Large Floating Structure in Time Domain by Mode Superposition Method", Proc. Annual Spring Meeting of the Korean Society of Naval Architects, 122~127, 2001
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C.H. Rim, Y.R. Choi, "Slamming Pressure and Structure Design Pressure", Proc. Annual Autumn Meeting of the Korean Society of Naval Architects, 324~327, 2000
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J.H. Kim, S.Y. Hong, S. Hong, H.J. Kim, "The study on model test of tension leg platform (II) ? model test & analysis -", Proc. Annual Spring Meeting of the Korean Society of Ocean Engineers, 69~74, 2000
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Y.R. Choi, S. Hong, "Experimental estimation of the vibrational displacement for a pipe in flows", Proc. 44th Workshop on Ocean Engineering, 96~106, 2000
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Y.R. Choi, S.W. Hong, H.J. Kim, J.H. Kim, "Experimental prediction of wave load and responses for a barge-mounted plant", Proc. Annual Autumn Meeting of the Korean Society of Naval Architects, 405~409, 1999
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E.C. Kim, Y.R. Choi, H.S. Yoon, "Computer program of speed trial analysis method by the ongoing work in ISO/TC8", Proc. Annual Autumn Meeting of the Korean Society of Naval Architects, 232~235, 1999
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H.J. Kim, Y.R. Choi, S.Y. Hong, C.M. Lee, "Development of seakeeping test techniques with a free running model", Proc. Annual Autumn Meeting of the Korean Society of Naval Architects, 222~225, 1999
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J.H. Kim, S. Hong, H.J. Kim, S.Y. Hong, Y.R. Choi, "The study on model test of tension leg platform (I) ? model test and measuring system -", Proc. Annual Autumn Meeting of the Korean Society of Ocean Engineers, 214~218, 1999
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Y.R. Choi, H.J. Kim, S.W. Hong, "An experimental study on BMP moored by dolphin-fender system in waves", Proc. 42nd Workshop on Ocean Engineering, 25~38, 1998
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H.J. Kim, K.H. Kim, Y.R. Choi, T.Y. Chung, "Analysis on operating ratio of barge mounted plant", Proc. Annual Autumn Meeting of the Korean Society of Naval Architects, 412~415, 1998
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Y. R. Choi, S.Y. Hong, H.S. Choi, "An analysis of nonlinear wave forces on floating bodies by using a higher-order boundary element method", Proc. Annual Autumn Meeting of the Korean Society of Naval Architects, 99~106, 1998
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K.H. Kim, Y.R. Choi, S. Hong, T.Y. Chung, "A study on the preliminary design of the dolphin mooring system of the barge mounted plant", Proc. Annual Spring Meeting of the Korean Society of Naval Architects, 80~83, 1998
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Y.R. Choi, S. Hong, S.Y. Hong, "Simulation of ship motion considering the effect of mooring damping", Proc. Annual Autumn Meeting of the Korean Society of Naval Architects, 152~159, 1997
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H.J. Kim, S.Y. Hong, Y.R. Choi, J.H. Kim, "A comparison study on hydrodynamic characteristics of barge with variation of bottom shape", Proc. 39th Workshop on Ocean Engineering, 75~85, 1997
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Y.R. Choi, H.S. Choi, H.S. Shin, D.J. Yum, "Analysis of motion response of a moored ship at quay", Proc. Annual Autumn Meeting of the Korean Society of Naval Architects, 1994
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