Detailed Information

Research Field/Keywords for Research Field

• Ocean Engineering

Education

• 1991/03, Graduated
• 1993/03, Master Course, Completed
• 1996/03, Doctor Course, Accomplished credits for doctoral program

Employment Experience

• 1996/04 - 2001/12 Research Associate
• 2002/01 - 2006/03
• 2006/05 - 2007/03 Research Associate, Institute of Ocean Energy, Saga University
• 2007/04 - 2009/03 Assistant Professor, Institute of Ocean Energy, Saga University
• 2009/04 -  *  Associate Professor, Institute of Ocean Energy, Saga University

Field of Specialization

• Naval and maritime engineering

Membership in Academic Societies

• The Japan Society of Naval Architects and Ocean Engineering, The Japan Society of Mechanical Engineers

Awards

• 日本船舶海洋工学会賞（論文賞） （2016/05）
• 日本造船工業会賞 （2016/05）
• 日本海事協会賞 （2016/05）

Research Topics and Results

• Development of wave energy converters using cross-flow turbine 2023/09
• Numerical study on a hybrid WEC of the Backward Bent Duct Buoy and Point Absorber 2023/01
• Development of a Monitoring System for Coastal Fisheries Using Wave Energy Converter 2022/03
• Development of marine communication system using ESP32 2022/03
• クリーンエネルギーの技術と市場 2022/02
• Experimental study on a bottom corner of the floating WEC 2022/01
• Application of vortex method using fluid velocity and vorticity as unknown variables to motion analysis of a floating body in waves 2020/06
• Study on shape geometry of floating oscillating water column wave energy converter for low heave wave condition 2020/03
• Experimental investigation on Bi-directiona impulse turbine with flow collector for tidal energy conversion 2019/10
• 海底固定型振り子式波力発電用油圧動力変換システムの規則波シミュレーション 2019/09
• 渦法による自由表面下で強制振動する平板周りの流場解析 ‐ 流速と渦度を未知量とした基礎式に基づく2 次元粘性流体解析 ‐ 2019/08
• Calculation of hydrodynamic force acting on the forced oscillating plate by vortex method 2019/06
• New spar design for floating offshore wind turbine with damping plates 2019/06
• Effect of hub-to-tip ratio on the performance of bi-directional impulse turbine with flow collector for tidal energy conversion 2019/03
• Ocean energy systemswave energy modelling task: Modelling, verification and validation ofwave energy converters 2019/01
• Flow Field Analysis around the Forced Oscillating Plate under the Free Surface by Vortex Method — 2D Viscous Fluid Analysis Based on Fundamental Equations Using Velocity and Vorticity as Unknown Quantities — 2019
• TOWING EXPERIMENTS OF THE FLEXIBLY SUPPORTED VERTICAL AXIS TIDAL CURRENT TURBINE 2018/06
• CHARACTERISTICS OF A SYNCHRONOUS GENERATOR ON WAVE ENERGY CONVERTER 2018/06
• English Hydraulic power-Take-Off 2018
• Study on power conversion of wave power generator using synchronous generator 2018
• 渦法による浮体構造物の非線形波浪中挙動解析法の開発-第3報 浮体式振動水柱型波力発電装置の一次変換性能解析 2017/06
• Numerical Analysis on Drift Force Acting on a Floating OWC-Type Wave Energy Converter “ Backward Bent Duct Buoy” by Vortex Method 2017/06
• A Time-Domain Numerical Tool for Wave Energy Attenuator with the SPH Method 2017/06
• Simulation of Floating Body in Nonlinear Waves by Vortex Method:- Part3, Simulation of 2-Dimensional Floating OWC-type Wave Energy Converter - 2017
• Study on conversion efficiency of synchronous generator for wave energy converter 2017
• Modelling Wave-induced Motions of a Floating WEC with Mooring Lines using the SPH Method 2016/10
• Research on Efficiency of Impulse Turbine for Fixed Oscillating Water Column Type Wave Energy Conversion 2016/10
• Study on Bi-Directional Impulse Turbine with Flow Collector for Tidal Energy Conversion 2016/08
• Experimental Study on Efficiency of Impulse Turbine for Fixed OWC Type Wave Energy Conversion 2016
• Study on Bi-Directional Impulse Turbine with Flow Collector for Tidal Energy Conversion 2016
• Experimental Study on Primary and Secondary Conversion Efficiencies of a Fixed Oscillating Water Column Type Wave Energy Converter 2016
• 0518 Numerical Analysis on the Bi-Directional Diffuser for Tidal Energy Conversion 2015/11
• Numerical Analysis on Primary Conversion Efficiency of a Floating Pendulum Wave Energy Converter 2015/11
• Experimental Study on Generating Efficiency of a Floating OWC "Backward Bent Duct Buoy" 2015/11
• Application of Impulse Air Turbine for Bi-Directional Flow to Tidal Energy Conversion 2015/11
• Numerical simulation for oscillating-water-column wave energy converter 2015/11
• Numerical Analysis of Primary Conversion Efficiency of Oscillating Water Columns with Multiple Chamber 2015/10
• A Numerical Study on Multi-chamber Oscillating Water Columns 2015/10
• Simulation of Floating Body in Nonlinear Wave by Vortex Methods:- Part2, Simulation of 2-Dimensional Rectangle and Triangle Floating Body Motion - 2015/10
• Numerical simulation for oscillating-water-column wave energy converter 2015
• Application of Impulse Air Turbine for Bi-Directional Flow to Tidal Energy Conversion 2015
• Experimental Study on Efficiency Improvement of Fixed OWC Type Wave Energy Converter with Impulse Turbine 2015
• 0513 Experimental Study on Efficiency Improvement of Fixed Oscillating Water Column Type Wave Energy Converter 2015
• Simulation of Floating Body in Nonlinear Wave by Vortex Methods:- Part2, Simulation of 2-Dimensional Rectangle and Triangle Floating Body Motion - 2015
• 2015A-GS2-4 Numerical Analysis on Primary Conversion Efficiency of a Floating Pendulum Wave Energy Converter 2015
• 2015A-GS2-1 Experimental Study on Generating Efficiency of a Floating OWC "Backward Bent Duct Buoy" 2015
• Power Generation Experiments of Fixed OWC Wave Energy Converter with Impulse Turbine 2014/11
• An Experimental Study on Primary Efficiency of a Wave Energy Converter "Backward Bent Duct Buoy" in regular wave conditions 2014/10
• A Study on Load Characteristics of Floating Type Pendulum Wave Energy Converter 2014/09
• An Experimental Study on Primary efficiency of a Wave Energy Converter "BackwardBentDuct Buoy in regular wave conditions 2014/08
• 自由表面をもつ流体と物体の干渉問題への渦法の適用 2014/03
• Solution of a Diffusion Problem in a Non-Homogeneous Flow and Diffusion Field by the Integral Representation Method (IRM) 2014/02
• A Study on Load Characteristics of Floating Type Pendulum Wave Energy Converter 2014
• An Experimental Study on Primary Efficiency of a Wave Energy Converter "Backward Bent Duct Buoy" in regular wave conditions 2014
• 1011 An experimental study of power generation of floating pendulum-type wave energy converter 2013/11
• A study on performance improvement of floating pendulum type wave energy converter 2013/11
• An experimental study on influence of primary conversion efficiency for incident wave direction of a floating wave energy converter "Backward Bent Duct Buoy" 2013/11
• Conversion Efficiency of Floating Pendulum Wave Energy Converter in 2D Regular Waves 2013/10
• Conversion Efficiency of Floating Pendulum Wave Energy Conveter in Regular Waves 2013/09
• Variational Principles Related to Motions of a Floating Elastic Plate in Waves 2013/06
• Experimental and Numerical Analysis on Conversion Efficiency of Floating Pendulum Wave Energy Converter in Regular Waves 2013/06
• A Numerical Analysis on Primary Conversion Efficiency of a Floating OWC-type Wave Energy Converter "Backward Bent Duct Buoy" 2013/06
• 波浪中の弾性平板浮体の運動に関する変分原理 2013/02
• Conversion Efficiency of Floating Pendulum Wave Energy Converter in Regular Waves 2013
• Simulation of Floating Body in Nonlinear Wave by Vortex Methods : Part1, Hydrodynamic Forces acting on Heaving Body under Free Surface 2012/12
• Improvement of a generating efficiency on floating type pendulum wave energy converter 2012/11
• 渦法による浮体構造物の非線形波浪中挙動解析法の開発 2012/10
• Simulation of Heaving Body under Free Surface by Vortex Methods 2012/10
• 渦法による自由表面下の物体に作用する流体力および周辺流場の解析 2012/10
• Generating efficiency of a Floating OWC "Backward Bent Duct Buoy" 2012/09
• 後ろ曲げダクトブイ型波力発電装置の規則波中発電性能に関する研究 2012/08
• Application of Hamilton-Dirichlet's Principle to Analysis of Hydroelastic Behavior of an Elastic Floating Plate of Arbitrary Plan Geometry in Waves 2012/06
• 302 Effect of fins attached on a floating platform 2012/03
• 301 Development of wave energy devices in overseas 2012/03
• Development of wave energy devices in overseas 2012/03
• Effect of fins attached on a floating platform 2012/03
• Generating efficiency of a Floating OWC "Backward Bent Duct Buoy" 2012
• 301 Development of wave energy devices in overseas 2012
• Frequency Domain Analysis on Primary Conversion Efficiency of a Floating OWC-type Wave Energy Converter : Part1, Two Dimensional Problems 2011/12
• Frequency Domain Analysis on Primary Conversion Efficiency of a Floating OWC-type Wave Energy Converter : Part1, Two Dimensional Problems 2011/12
• 後ろ曲げダクトブイ型波力発電装置の発電特性 2011/10
• An experimental study of a total efficiency of a floating-type wave energy converter "Backward Bent Duct Buoy" 2011/09
• Numerical Analysis on Primary Conversion Efficiency of Floating Type OWC "Backward Bent Duct Buoy" 2011/09
• A Study on Floating Type Pendulum Wave Energy Converter (1st Report) : Energy Conversion Characteristics in Regular Waves 2011/06
• A Study on Floating Type Pendulum Wave Energy Converter (1st Report) : Energy Conversion Characteristics in Regular Waves 2011/06
• Numerical Analysis on Primary Conversion Efficiency of Floating Type OWC "Backward Bent Duct Buoy 2011/05
• Numerical analysis on primary conversion efficiency of floating type OWC "Backward Bent Duct Buoy" 2011
• An experimental study of a total efficiency of a floating-type wave energy converter "Backward Bent Duct Buoy" 2011
• Analysis of Backward Bent Duct Buoy by Moving Particle Semi-implicit Method 2010/12
• Wave Energy Utilization: Recent Trend 2010/12
• Numerical Simulation of Backward Bent Duct Buoy by Moving Particle Semiimplicit Method 2010/12
• Research on a Method Decreasing Motions and Drift Force of a Floating Renewable Energy Facility in Waves 2010/11
• Research on a Method Decreasing Motions and Drift Force of a Floating Renewable Energy Facility in Waves 2010/11
• Thrust Generation by Waves 2010/11
• 1403 The Characteristics of Floating OWC "Backward Bent Duct Buoy" 2010/10
• Primary Energy Conversion Characteristics of a Floating OWC "Backward Bent Duct Buoy" 2010/06
• A study of hydrodynamic forces acting on a plate oscillating beneath a free-surface 2010/06
• Wave Induced Mmotion of Floating Pendulum Type WEC in Regular Waves 2010/06
• 1403 The Characteristics of Floating OWC "Backward Bent Duct Buoy" 2010
• Numerical Simulation for Evaluation of Primary Energy Conversion of Floating OWC-type Wave Energy Converter 2009/06
• The Analysis of the Negative Drift Force Acting on a Floating OWC "Backward Bent Duct Buoy" 2009/06
• An experimental study of hydrodynamic forces of a fin attached to a floating platform 2009/05
• An experimental study of drift force act on a backward bend duct buoy 2009/05
• Experimental study of negative drift force acts on a "Backward Bent Duct Buoy" 2009/03
• Numerical Simulation for Evaluation of Energy Conversion of Floating OWC-type Wave Energy Converter : Part1, Derivation of Equation of Motion of a Floating Body Considering Memory Effect by Air Pressure and Evaluation of Hydrodynamic Force in Frequency Domain 2008/12
• 2008W-G1-1 An experimental study of viscous effect on submerged oscillating fin 2008/11
• 2008S-G3-3 Study on Hydrodynamic Characteristics of Backward Bent Duct Buoy 2008/05
• An experimental study of hydrodynamic forces acting on a submerged fin and induced velocity field 2008/03
• Experimental study of drift force acting on a Backward Bent Duct Buoy (BBDB) 2008/03
• 2008S-OS3-2 Experimental Study on Hydrodynamic Force on a Submerged Oscillate Fin and Fluid Velocity Field 2008
• 2008S-G3-3 Study on Hydrodynamic Characteristics of Backward Bent Duct Buoy 2008
• 2008W-G1-1 An experimental study of viscous effect on submerged oscillating fin 2008
• Experimental study of negative drift force acts on a "Backward Bent Duct Buoy" 2008
• Experimental Study on Primary Energy Conversion Characteristics of Backward Bent Duct Buoy 2007/12
• Experimental Study on Primary Energy Conversion Characteristics of Backward Bent Duct Buoy 2007/12
• 浮体型波力発電装置(後ろ曲げダクトブイ)の一次変換性能に及ぼす浮体形状について 2007/10
• Experimental Research on Primary Conversion of a Floating OWC "Backward Bent Duct Buoy" 2007/10
• GIS processing of AVHRR/HRPT data on a research vessel 2007/10
• 衛星を用いたマウンド漁礁の湧昇効果評価の可能性 2007/10
• 後ろ曲げダクトブイ型波力発電装置の一次変換特性への浮体形状影響 2007/10
• Application of the Optical flow algorithm to satellite sea surface temperature 2007/09
• OS-5 : 海洋モニタリング技術の現状(オーガナイズドセッション報告,春季講演会) 2007/07
• 2007S-OS5-4 Application of SST mapping for the observation 2007/05
• 2007S-OS2-10 Effect of Body Shape on Primary Conversion characteristics of a Floating Wave Energy Device "Backward Bent Duct Buoy (BBDB)" 2007/05
• 2007S-OS2-8 Primary conversion of the spar-buoy generator 2007/05
• The Influence of the Body Shape of Backward Bent Duct Buoy to the Primary Wave Energy Conversion Characteristics 2007/03
• 2007S-OS2-8 Primary conversion of the spar-buoy generator 2007
• 2007S-OS2-10 Effect of Body Shape on Primary Conversion characteristics of a Floating Wave Energy Device "Backward Bent Duct Buoy (BBDB)" 2007
• 2007S-OS5-4 Application of SST mapping for the observation 2007
• Experimental study of drift force acting on a backward bent duct buoy (BBDB) 2007
• An experimental study of hydrodynamic forces acting on a submerged fin and induced velocity field 2007
• 船舶受信衛星データのGIS展開に関する研究 2006/12
• 2006A-OS12-9 Experimental Research on Primary Conversion of a Floating Wave Energy Device "Backward Bent Duct Buoy (BBDB)" 2006/11
• 2006A-G7-1 GIS application of AVHRR/HRPT data received on research vessel MIRAI 2006/11
• 浮体型波力発電装置（後ろ曲げダクトブイ）の一次変換性能に関する実験的研究 2006/10
• 海洋リモートセンシングの方向性 2006/10
• 海洋地球研究船「みらい」の搭載機器と観測データ 2006/10
• 2006A-G7-1 GIS application of AVHRR/HRPT data received on research vessel MIRAI 2006
• 2006A-OS12-9 Experimental Research on Primary Conversion of a Floating Wave Energy Device "Backward Bent Duct Buoy (BBDB)" 2006
• The influence of the body shape of backward bent duct buoy to the primary wave energy conversion characteristics 2006
• 2005S-OS3-2 A review of assessment methods for coastal environment 2005/06
• O-99 Bathymetric survey of the seamounts at the northwestern Pacific 2004/09
• D452 「みらい」における気象観測について(海洋地球研究船『みらい』における大気観測-これまでの成果と今後の展望,専門分科会) 2004/05
• On the Damage of the Acoustic Window at the Bottom of an Ocean Observation Ship 2003/10
• Large Earth and ocean research vessel Mirai, its operation, instrumentations, missions and BEAGLE 2003 cruise 2003/09
• OS1:海洋環境のリモートセンシング(春季講演会オーガナイズトセッション報告) 2003/07
• On the Damage of the Acoustic Window at the Bottom of an Ocean Observation Ship 2003/03
• 3-2 海洋観測船用船底音響窓破損原因に関する検討 2002/11
• An Estimation of Environmental Impact of Large-Scale Platform using Landsat TM image 2001/10
• (17) リモートセンシングを用いたメガフロートの事後評価に関する研究(平成13年春季講演論文概要) 2001/03
• An Estimation of Coastal Water Environment using Landsat TM data 2000/12
• (6) リモートセンシングを用いた閉鎖性内湾の環境評価に関する研究(平成12年秋季講演論文概要) 2000/10
• Radiation Force Acting on the Large-Scale Platform Installed in the Coastal Area 1999/12
• Coastal environmet assessment using Landsat TM data 1999/11
• (28) 沿岸域に設置された大型浮体式海洋構造物に作用するRadiation流体力に関する研究(平成11年秋季講演論文概要) 1999/10
• Topographical Effects on Wave Exciting Forces on Huge Floating Structure (2) 1996/12
• (36)超大型浮体式海洋構造物に作用する波力に関する研究(その2) : 平成8年秋季講演論文概要 1996/10
• Topographical Effects on Wave Exciting Forces on a Huge Floating Structure 1994/10
• 超大型浮体式海洋構造物に作用する波力に関する研究〔含 討論〕 1994/06
• 超第型浮体式海洋構造物に作用する波力に関する研究 1994/04

Books

• クリーンエネルギーの技術と市場;　2022/02
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  

Original Articles

• Numerical study on a hybrid WEC of the Backward Bent Duct Buoy and Point Absorber;　2023/01
  ANNOUNCEMENT INFO.;　Ocean Engineering, 267
  AUTHOR;　Muhamad Aiman Jalani; Mohd Rashdan Saad; Mohd Kamarul Huda Samion; Yasutaka Imai; Shuichi Nagata; Mohd Rosdzimin Abdul Rahman
  
• Experimental study on a bottom corner of the floating WEC;　2022/01
  ANNOUNCEMENT INFO.;　Ocean Engineering, 243, 110237
  AUTHOR;　Muhamad Aiman Jalani, Nur Izzati Ismail, Mohd Rashdan Saad, Mohd Kamarul Huda Samion, Yasutaka Imai, Shuichi Nagata, Mohd Rosdzimin Abdul Rahman
  
• Application of vortex method using fluid velocity and vorticity as unknown variables to motion analysis of a floating body in waves;　2020/06
  ANNOUNCEMENT INFO.;　Proceedings of the International Offshore and Polar Engineering Conference 2020-October, 1851-1858
  AUTHOR;　Yutaka Okamoto,Shuichi Nagata,Yasutaka Imai,Hideyuki Niizato
  
• Study on shape geometry of floating oscillating water column wave energy converter for low heave wave condition;　2020/03
  ANNOUNCEMENT INFO.;　Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 70, 2, 124-134
  AUTHOR;　Muhamad Jalani Aiman,Nur Izzati Ismail,Mohd Rashdan Saad,Yasutaka Imai,Shuichi Nagata,Mohd Kamarul Huda Samion,Ernie Abd Manan,Mohd Rosdzimin Abdul Rahman
  
• Experimental investigation on Bi-directiona impulse turbine with flow collector for tidal energy conversion;　2019/10
  ANNOUNCEMENT INFO.;　International Journal of Fluid Machinery and Systems, 12, 4, 244-250
  AUTHOR;　Yoichi Kinoue,Masaki Sakaguchi,Tengen Murakami,Yasutaka Imai,Shuichi Nagata,Norimasa Shiomi,Manabu Takao
  
• 海底固定型振り子式波力発電用油圧動力変換システムの規則波シミュレーション;　2019/09
  ANNOUNCEMENT INFO.;　, 24, 63-69
  AUTHOR;　
  
• 渦法による自由表面下で強制振動する平板周りの流場解析 ‐ 流速と渦度を未知量とした基礎式に基づく2 次元粘性流体解析 ‐;　2019/08
  ANNOUNCEMENT INFO.;　, 29, 25-37
  AUTHOR;　
  
• Calculation of hydrodynamic force acting on the forced oscillating plate by vortex method;　2019/06
  ANNOUNCEMENT INFO.;　Proceedings of the International Offshore and Polar Engineering Conference, 3, 3476-3483
  AUTHOR;　Yutaka Okamoto,Shuichi Nagata,Yasutaka Imai,Hideyuki Niizato
  
• New spar design for floating offshore wind turbine with damping plates;　2019/06
  ANNOUNCEMENT INFO.;　Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering
  AUTHOR;　Shigesuke Ishida,Yasutaka Imai
  
• Effect of hub-to-tip ratio on the performance of bi-directional impulse turbine with flow collector for tidal energy conversion;　2019/03
  ANNOUNCEMENT INFO.;　IOP Conference Series: Earth and Environmental Science, 240
  AUTHOR;　Y. Kinoue,N. Shiomi,M. Takao,T. Murakami,Y. Imai,S. Nagata
  
• Ocean energy systemswave energy modelling task: Modelling, verification and validation ofwave energy converters;　2019/01
  ANNOUNCEMENT INFO.;　Journal of Marine Science and Engineering, 7
  AUTHOR;　Fabian Wendt,Kim Nielsen,Yi Hsiang Yu,Harry Bingham,Claes Eskilsson,Morten Kramer,Aurélien Babarit,Tim Bunnik,Ronan Costello,Sarah Crowley,Benjamin Gendron,Giuseppe Giorgi,Simone Giorgi,Samuel Girardin,Deborah Greaves,Pilar Heras,Johan Hoffman,Hafizul Islam,Ken Robert Jakobsen,Carl Erik Janson,Johan Jansson,Hyun Yul Kim,Jeong Seok Kim,Kyong Hwan Kim,Adi Kurniawan,Massimiliano Leoni,Thomas Mathai,Bo Woo Nam,Sewan Park,Krishnakumar Rajagopalan,Edward Ransley,Robert Read,John V. Ringwood,José Miguel Rodrigues,Benjamin Rosenthal,André Roy,Kelley Ruehl,Paul Schofield,Wanan Sheng,Abolfazl Shiri,Sarah Thomas,Imanol Touzon,Imai Yasutaka
  
• TOWING EXPERIMENTS OF THE FLEXIBLY SUPPORTED VERTICAL AXIS TIDAL CURRENT TURBINE;　2018/06
  ANNOUNCEMENT INFO.;　GRAND RENEWABLE ENERGY 2018, June 17 - 22, 2018
  AUTHOR;　Hiromichi Akimoto, Hidetaka Senga, Yasutaka Imai, Yutaka Hara
  
• CHARACTERISTICS OF A SYNCHRONOUS GENERATOR ON WAVE ENERGY CONVERTER;　2018/06
  ANNOUNCEMENT INFO.;　GRAND RENEWABLE ENERGY 2018, June 17 - 22, 2018
  AUTHOR;　Yasutaka Imai, Shuichi Nagata, Tengen Murakami and Shigesuke Ishida
  
• Energy Conversion Efficiency of a Fixed OWC-Type Wave Energy Converter with Generator;　2017/10
  ANNOUNCEMENT INFO.;　, 22, 21-25
  AUTHOR;　
  
• Experimental Research on Performances of Air Turbines for a Fixed Oscillating Water Column-Type Wave Energy Converter;　2017/09
  ANNOUNCEMENT INFO.;　International Journal of Advanced Engineering Research and Science, 4, 9, 40-47
  AUTHOR;　T. Murakami, Y. Imai, S. Nagata, M. Takao, T. Setoguchi
  
• 渦法による浮体構造物の非線形波浪中挙動解析法の開発-第3報 浮体式振動水柱型波力発電装置の一次変換性能解析;　2017/06
  ANNOUNCEMENT INFO.;　, 25, 21-31
  AUTHOR;　
  
• Numerical Analysis on Drift Force Acting on a Floating OWC-Type Wave Energy Converter “ Backward Bent Duct Buoy” by Vortex Method;　2017/06
  ANNOUNCEMENT INFO.;　Proc. of the 27th ISOPE Conference, 71-78
  AUTHOR;　S. Nagata, Y. Imai, T. Murakami, Y.Okamoto
  
• A Time-Domain Numerical Tool for Wave Energy Attenuator with the SPH Method;　2017/06
  ANNOUNCEMENT INFO.;　Journal of Marine Science and Technology, 25, 6, 752-760, 25, 6, 752-760
  AUTHOR;　Da-Wei Chen, Shuichi Nagata, Shiaw-Yih Tzang, Yasutaka Imai, Chih-Min Hsieh, and Jiahn-Horng Chen
  
• Experimental Research on Efficiency in a Fixed Oscillating Water Column-Type Wave Energy Converter with Generator;　2017/05
  ANNOUNCEMENT INFO.;　Proceedings of 13th International Symposium on Experimental and Computational Aerothermodynamics of Internal Flows
  AUTHOR;　T.Murakami, Y.Imai, S.Nagata, M.Takao, T.Setoguchi
  
• Simulation of Floating Body in Nonlinear Waves by Vortex Method:- Part3, Simulation of 2-Dimensional Floating OWC-type Wave Energy Converter -;　2017
  ANNOUNCEMENT INFO.;　Journal of the Japan Society of Naval Architects and Ocean Engineers, 25, 0, 21 - 31
  AUTHOR;　Nagata Shuichi;Okubo Shigeki;Imai Yasutaka;Murakami Tengen;Okamoto Yutaka
  
• Study on conversion efficiency of synchronous generator for wave energy converter;　2017
  ANNOUNCEMENT INFO.;　The Proceedings of Conference of Kyushu Branch, 2017, 0, -
  AUTHOR;　IMAI Yasutaka;NAGATA Shuichi;MURAKAMI Tengen;FUKAI Makoto
  
• Modelling Wave-induced Motions of a Floating WEC with Mooring Lines using the SPH Method;　2016/10
  ANNOUNCEMENT INFO.;　Proceedings of the 3rd Asian Wave & Tidal Energy Conference, 449-454
  AUTHOR;　D.-W.,Chen, S., Nagata,Y.Imai
  
• Study on the performance of the Tidal power generator;　2016/10
  ANNOUNCEMENT INFO.;　OTEC, 21, 69-73
  AUTHOR;　
  
• Research on Efficiency of Impulse Turbine for Fixed Oscillating Water Column Type Wave Energy Conversion;　2016/10
  ANNOUNCEMENT INFO.;　OTEC, 21, 75-79
  AUTHOR;　
  
• Research on Efficiency of Impulse Turbine for Fixed Oscillating Water Column Type Wave Energy Conversion;　2016/10
  ANNOUNCEMENT INFO.;　, 21, 75 - 79
  AUTHOR;　Murakami Tengen;Imai Yasutaka;Nagata Shuichi;Takao Manabu;Setoguchi Toshiaki;Institute of Ocean Energy Saga University;Institute of Ocean Energy Saga University;Institute of Ocean Energy Saga University;Department of Mechanical Engineering Matsue National College of Technology;Institute of Ocean Energy Saga University
  
• Energy Conversion Efficiency of an Impulse Turbine in a Fixed Oscillating Water Column;　2016/09
  ANNOUNCEMENT INFO.;　Proceedings of 6th Asian Joint Workshop on Thermophysics and Fluid Science, Proceedings of 6th Asian Joint Workshop on Thermophysics and Fluid Science
  AUTHOR;　T. Murakami, Y. Imai, S. Nagata, M. Takao, T. Setoguchi
  
• Study on Bi-Directional Impulse Turbine with Flow Collector for Tidal Energy Conversion;　2016/08
  ANNOUNCEMENT INFO.;　, 44, 8, 496-504
  AUTHOR;　
  
• Experimental Research on Primary and Secondary Conversion Efficiencies in an Oscillating Water Column-Type Wave Energy Converte;　2016/08
  ANNOUNCEMENT INFO.;　Sustainability, 8, 756, 1-11
  AUTHOR;　T. Murakami, Y. Imai, S. Nagata, M. Takao, T. Setoguchi
  
• Experimental Study on Primary and Secondary Conversion Efficiencies of a Fixed Oscillating Water Column Type Wave Energy Converter;　2016/06
  ANNOUNCEMENT INFO.;　, 44, 6, 364-371
  AUTHOR;　
  
• 0518 Numerical Analysis on the Bi-Directional Diffuser for Tidal Energy Conversion;　2015/11
  ANNOUNCEMENT INFO.;　Fluids engineering conference, 2015, 5181-5182
  AUTHOR;　KINOUE Yoichi
  
• 0513 Experimental Study on Efficiency Improvement of Fixed Oscillating Water Column Type Wave Energy Converter;　2015/11
  ANNOUNCEMENT INFO.;　Fluids engineering conference, 2015, 5131-5133
  AUTHOR;　MURAKAMI Tengen;IMAI Yasutaka;NAGATA Shuichi;TAKAO Manabu;SETOGUCHI Toshiaki
  
• Numerical Analysis on Primary Conversion Efficiency of a Floating Pendulum Wave Energy Converter;　2015/11
  ANNOUNCEMENT INFO.;　, 21, 243-245
  AUTHOR;　
  
• Experimental Study on Generating Efficiency of a Floating OWC "Backward Bent Duct Buoy";　2015/11
  ANNOUNCEMENT INFO.;　Journal of the Japan Society of Naval Architects and Ocean Engineers, 21, 231-234
  AUTHOR;　
  
• Experimental Study on Efficiency Improvement of Fixed OWC Type Wave Energy Converter with Impulse Turbine;　2015/11
  ANNOUNCEMENT INFO.;　, 20, 41-49
  AUTHOR;　Murakami Tengen;Imai Yasutaka;Nagata Shuichi;Takao Manabu;Setoguchi Toshiaki
  
• Application of Impulse Air Turbine for Bi-Directional Flow to Tidal Energy Conversion;　2015/11
  ANNOUNCEMENT INFO.;　, 20, 61-71
  AUTHOR;　Kinoue Yoichi;Shiomi Norimasa;Takao Manabu;Nagata Shuichi;Imai Yasutaka;Murakami Tengen;Tsugami Yukio;Fujii Motoshi
  
• Numerical simulation for oscillating-water-column wave energy converter;　2015/11
  ANNOUNCEMENT INFO.;　, 20, 59-65
  AUTHOR;　Imai Yasutaka;Sakanaka Rieko;Nagata Shuichi;Murakami Tengen
  
• Numerical Analysis of Primary Conversion Efficiency of Oscillating Water Columns with Multiple Chamber;　2015/10
  ANNOUNCEMENT INFO.;　Procedia Engineering, 105, 586-600
  AUTHOR;　P. Koirala, S. Nagata, Y. Imai, T.Tengen, T. Setoguchi
  
• A Numerical Study on Multi-chamber Oscillating Water Columns;　2015/10
  ANNOUNCEMENT INFO.;　Journal of Japan Society of Civil Engineers, 3, 93-104
  AUTHOR;　P.Koirala, S.Nagata, Y. Imai, T. Murakami, T.Setoguchi
  
• Simulation of Floating Body in Nonlinear Wave by Vortex Methods:- Part2, Simulation of 2-Dimensional Rectangle and Triangle Floating Body Motion -;　2015/10
  ANNOUNCEMENT INFO.;　Journal of the Japan Society of Naval Architects and Ocean Engineers, 22, 0, 55-65
  AUTHOR;　Okubo Shigeki;Nagata Shuichi;Imai Yasutaka;Niizato Hideyuki
  
• Simulation of Floating Body in Nonlinear Wave by Vortex Methods:- Part2, Simulation of 2-Dimensional Rectangle and Triangle Floating Body Motion -;　2015
  ANNOUNCEMENT INFO.;　Journal of the Japan Society of Naval Architects and Ocean Engineers, 22, 0, 55 - 65
  AUTHOR;　Okubo Shigeki;Nagata Shuichi;Imai Yasutaka;Niizato Hideyuki
  
• Power Generation Experiments of Fixed OWC Wave Energy Converter with Impulse Turbine;　2014/11
  ANNOUNCEMENT INFO.;　Journal of the Japan Society of Naval Architects and Ocean Engineers, 19, 303-306
  AUTHOR;　
  
• An Experimental Study on Primary Efficiency of a Wave Energy Converter "Backward Bent Duct Buoy" in regular wave conditions;　2014/10
  ANNOUNCEMENT INFO.;　Journal of the Japan Society of Naval Architects and Ocean Engineers, 19, 0, 79-88
  AUTHOR;　Imai Yasutaka;Nagata Shuichi;Toyota Kazutaka;Murakami Tengen
  
• A Study on Load Characteristics of Floating Type Pendulum Wave Energy Converter;　2014/09
  ANNOUNCEMENT INFO.;　, 19, 39-46
  AUTHOR;　Murakami Tengen;Imai Yasutaka;Nagata Shuichi
  
• An Experimental Study on Primary efficiency of a Wave Energy Converter "BackwardBentDuct Buoy in regular wave conditions;　2014/08
  ANNOUNCEMENT INFO.;　Journal of the Japan Society of Naval Architects and Ocean Engineers, 19, 79-88
  AUTHOR;　YasutakaImai,Shuichi Nagata, Kazutaka Toyota, Tengen Murakami
  
• Solution of a Diffusion Problem in a Non-Homogeneous Flow and Diffusion Field by the Integral Representation Method (IRM);　2014/02
  ANNOUNCEMENT INFO.;　Applied and Computational Mathematics, 3, 1, 15-26
  AUTHOR;　Hiroshi Isshiki, Shuichi Nagata, Yasutaka Imai
  
• A study on performance improvement of floating pendulum type wave energy converter;　2013/11
  ANNOUNCEMENT INFO.;　Journal of the Japan Society of Naval Architects and Ocean Engineers, 17, 221-223
  AUTHOR;　
  
• An experimental study on influence of primary conversion efficiency for incident wave direction of a floating wave energy converter "Backward Bent Duct Buoy";　2013/11
  ANNOUNCEMENT INFO.;　Journal of the Japan Society of Naval Architects and Ocean Engineers, 17, 217-219
  AUTHOR;　
  
• Conversion Efficiency of Floating Pendulum Wave Energy Conveter in Regular Waves;　2013/09
  ANNOUNCEMENT INFO.;　, 18, 69-76
  AUTHOR;　Imai Yasutaka;Nagata Shuichi;Toyota Kazutaka;Murakami Tengen;Setoguchi Toshiaki
  
• Variational Principles Related to Motions of a Floating Elastic Plate in Waves;　2013/06
  ANNOUNCEMENT INFO.;　Journal of the Japan Society of Naval Architects and Ocean Engineers, 17, 31 - 40
  AUTHOR;　NAGATA Shuichi;ISSHIKI Hiroshi;IMAI Yasutaka;TOYOTA Kazutaka
  
• A Numerical Analysis on Primary Conversion Efficiency of a Floating OWC-type Wave Energy Converter "Backward Bent Duct Buoy";　2013/06
  ANNOUNCEMENT INFO.;　 Proceedings of the Conference on Computational Engineering and Science, 18
  AUTHOR;　
  
• 波浪中の弾性平板浮体の運動に関する変分原理;　2013/02
  ANNOUNCEMENT INFO.;　Journal of the Japan Society of Naval Architects and Ocean Engineers, 17, 31-40
  AUTHOR;　
  
• Conversion Efficiency of Floating Pendulum Wave Energy Converter in Regular Waves;　2013
  ANNOUNCEMENT INFO.;　, 18, 69 - 76
  AUTHOR;　Imai Yasutaka;Nagata Shuichi;Toyota Kazutaka;Murakami Tengen;Setoguchi Toshiaki
  
• Simulation of Floating Body in Nonlinear Wave by Vortex Methods : Part1, Hydrodynamic Forces acting on Heaving Body under Free Surface;　2012/12
  ANNOUNCEMENT INFO.;　Journal of the Japan Society of Naval Architects and Ocean Engineers, 16, 49-58
  AUTHOR;　OKUBO Shigeki;NAGATA Shuichi;IMAI Yasutaka;TOYOTA Kazutaka;NIIZATO Hideyuki
  
• Improvement of a generating efficiency on floating type pendulum wave energy converter;　2012/11
  ANNOUNCEMENT INFO.;　, 15, 367-370
  AUTHOR;　
  
• 渦法による浮体構造物の非線形波浪中挙動解析法の開発;　2012/10
  ANNOUNCEMENT INFO.;　, 16, 49-58
  AUTHOR;　
  
• Simulation of Heaving Body under Free Surface by Vortex Methods;　2012/10
  ANNOUNCEMENT INFO.;　Proc. Tenth ISOPE Pacific/Asia Offshore Mchanics Symposium, 116-123
  AUTHOR;　S. Okubo, S. Nagata, Y. Imai, K. Toyota, H. Niizato
  
• Generating efficiency of a Floating OWC "Backward Bent Duct Buoy";　2012/09
  ANNOUNCEMENT INFO.;　, 17, 41-46
  AUTHOR;　Imai Yasutaka;Toyota Kazutaka;Nagata Shuichi;Setoguchi Toshiaki;Takao Manabu
  
• Generating efficiency of a Floating OWC "Backward Bent Duct Buoy";　2012
  ANNOUNCEMENT INFO.;　, 17, 41 - 46
  AUTHOR;　Imai Yasutaka;Toyota Kazutaka;Nagata Shuichi;Setoguchi Toshiaki;Takao Manabu
  
• Frequency Domain Analysis on Primary Conversion Efficiency of a Floating OWC-type Wave Energy Converter : Part1, Two Dimensional Problems;　2011/12
  ANNOUNCEMENT INFO.;　Journal of the Japan Society of Naval Architects and Ocean Engineers, 14, 123 - 133
  AUTHOR;　NAGATA Shuichi;TOYOTA Kazutaka;IMAI Yasutaka;SETOGUCHI Toshiaki;NAKAGAWA Hiroyuki
  
• Frequency Domain Analysis on Primary Conversion Efficiency of a Floating OWC-type Wave Energy Converter : Part1, Two Dimensional Problems;　2011/12
  ANNOUNCEMENT INFO.;　, 14, 123-133
  AUTHOR;　NAGATA Shuichi;TOYOTA Kazutaka;IMAI Yasutaka;SETOGUCHI Toshiaki;NAKAGAWA Hiroyuki
  
• An experimental study of a total efficiency of a floating-type wave energy converter "Backward Bent Duct Buoy";　2011/09
  ANNOUNCEMENT INFO.;　, 16, 67-76
  AUTHOR;　Nagata Shuichi;Toyota Kazutaka;Imai Yasutaka;Setoguchi Toshiaki;Takao Manabu
  
• Numerical Analysis on Primary Conversion Efficiency of Floating Type OWC "Backward Bent Duct Buoy";　2011/09
  ANNOUNCEMENT INFO.;　, 16, 61-66
  AUTHOR;　Nagata Shuichi;Toyota Kazutaka;Imai Yasutaka;Setoguchi Toshiaki;Nakagawa Hiroyuki
  
• A Study on Floating Type Pendulum Wave Energy Converter (1st Report) : Energy Conversion Characteristics in Regular Waves;　2011/06
  ANNOUNCEMENT INFO.;　Journal of the Japan Society of Naval Architects and Ocean Engineers, 13, 67 - 74
  AUTHOR;　TOYOTA Kazutaka;NAGATA Shuichi;IMAI Yasutaka;SETOGUCHI Toshiaki;ONO Keisuke
  
• A Study on Floating Type Pendulum Wave Energy Converter (1st Report) : Energy Conversion Characteristics in Regular Waves;　2011/06
  ANNOUNCEMENT INFO.;　, 13, 67-74
  AUTHOR;　TOYOTA Kazutaka;NAGATA Shuichi;IMAI Yasutaka;SETOGUCHI Toshiaki;ONO Keisuke
  
• Numerical Analysis on Primary Conversion Efficiency of Floating Type OWC "Backward Bent Duct Buoy;　2011/05
  ANNOUNCEMENT INFO.;　, 12, 49-51
  AUTHOR;　
  
• Numerical analysis on primary conversion efficiency of floating type OWC "Backward Bent Duct Buoy";　2011
  ANNOUNCEMENT INFO.;　OTEC, 16, 61 - 66
  AUTHOR;　Nagata Shuichi;Toyota Kazutaka;Imai Yasutaka;Setoguchi Toshiaki;Nakagawa Hiroyuki
  
• An experimental study of a total efficiency of a floating-type wave energy converter "Backward Bent Duct Buoy";　2011
  ANNOUNCEMENT INFO.;　OTEC, 16, 67 - 76
  AUTHOR;　Nagata Shuichi;Toyota Kazutaka;Imai Yasutaka;Setoguchi Toshiaki;Takao Manabu
  
• Analysis of Backward Bent Duct Buoy by Moving Particle Semi-implicit Method;　2010/12
  ANNOUNCEMENT INFO.;　
  AUTHOR;　Mohammad Arif Hasan Mamun, Shuichi Nagata, Kazutaka Toyota, Yasutaka Imai and Toshiaki Setoguchi
  
• Wave Energy Utilization: Recent Trend;　2010/12
  ANNOUNCEMENT INFO.;　
  AUTHOR;　Mohammad Arif Hasan Mamun, Shuichi Nagata, Kazutaka Toyota, Yasutaka Imai and Toshiaki Setoguchi
  
• Numerical Simulation of Backward Bent Duct Buoy by Moving Particle Semiimplicit Method;　2010/12
  ANNOUNCEMENT INFO.;　, 903-906
  AUTHOR;　Mohammad Arif Hasan Mamun, Shuichi Nagata, Kazutaka Toyota, Yasutaka Imai and Toshiaki Setoguchi
  
• Research on a Method Decreasing Motions and Drift Force of a Floating Renewable Energy Facility in Waves;　2010/11
  ANNOUNCEMENT INFO.;　9th Pacific/Asia Offshore Mechanics Symposium, Busan, Korea, November 14-17, 2010, (ISOPE PACOMS-2010)
  AUTHOR;　Yasutaka IMAI, Kazutaka TOYOTA and Shuichi NAGATA
  
• Primary Energy Conversion Characteristics of a Floating OWC "Backward Bent Duct Buoy";　2010/06
  ANNOUNCEMENT INFO.;　Proceeding of the Twentieth International Offshore and Polar Engineering Conference, Beijing, China
  AUTHOR;　Toyota, K, Nagata, S, Imai, Y, Oda, J, Setoguchi, T
  
• A study of hydrodynamic forces acting on a plate oscillating beneath a free-surface;　2010/06
  ANNOUNCEMENT INFO.;　, 10, 429-432
  AUTHOR;　
  
• Wave Induced Mmotion of Floating Pendulum Type WEC in Regular Waves;　2010/06
  ANNOUNCEMENT INFO.;　, 10, 255-258
  AUTHOR;　
  
• Numerical Simulation for Evaluation of Primary Energy Conversion of Floating OWC-type Wave Energy Converter;　2009/06
  ANNOUNCEMENT INFO.;　The Nineteenth International Offshore and Polar Engineering Conference, Osaka, Japan, June 21−26, 2009
  AUTHOR;　Imai, Y, Toyota, K, Nagata, S, Setoguchi, T, Oda, J, Matsunaga, N, Manago, Y, Shimozono
  
• The Analysis of the Negative Drift Force Acting on a Floating OWC "Backward Bent Duct Buoy";　2009/06
  ANNOUNCEMENT INFO.;　The Nineteenth International Offshore and Polar Engineering Conference, Osaka, Japan, June 21−26, 2009
  AUTHOR;　Nagata, S, Toyota, K, Imai, Y, Setoguchi, T
  
• An experimental study of hydrodynamic forces of a fin attached to a floating platform;　2009/05
  ANNOUNCEMENT INFO.;　, 8, 473-476
  AUTHOR;　
  
• An experimental study of drift force act on a backward bend duct buoy;　2009/05
  ANNOUNCEMENT INFO.;　, 8, 469472
  AUTHOR;　
  
• Experimental study of negative drift force acts on a "Backward Bent Duct Buoy";　2009/03
  ANNOUNCEMENT INFO.;　, 14, 41-46
  AUTHOR;　Imai Yasutaka;Toyota Kazutaka;Nagata Syuichi;Setoguchi Toshiaki;Oda Junko;Matsunaga Narimasa;Shiraishi Kenji
  
• Numerical Simulation for Evaluation of Energy Conversion of Floating OWC-type Wave Energy Converter : Part1, Derivation of Equation of Motion of a Floating Body Considering Memory Effect by Air Pressure and Evaluation of Hydrodynamic Force in Frequency Domain;　2008/12
  ANNOUNCEMENT INFO.;　Journal of the Japan Society of Naval Architects and Ocean Engineers, 8, 239 - 248
  AUTHOR;　NAGATA Shuichi;TOYOTA Kazutaka;IMAI Yasutaka;SETOGUCHI Toshiaki
  
• An experimental study of hydrodynamic forces acting on a submerged fin and induced velocity field;　2008/03
  ANNOUNCEMENT INFO.;　, 13, 47-54
  AUTHOR;　Oda Junko;Nagata Shuichi;Imai Yasutaka;Toyota Kazutaka;Matsunaga Narimasa;Kuchii Tomoaki
  
• Experimental study of drift force acting on a Backward Bent Duct Buoy (BBDB);　2008/03
  ANNOUNCEMENT INFO.;　, 13, 37-45
  AUTHOR;　Imai Yasutaka;Toyota Kazutaka;Nagata Shuichi;Setoguchi Toshiaki;Oda Junko;Matsunaga Narimasa;Shimozono Takafumi
  
• Experimental study of negative drift force acts on a "Backward Bent Duct Buoy";　2008
  ANNOUNCEMENT INFO.;　OTEC, 14, 41 - 46
  AUTHOR;　Imai Yasutaka;Toyota Kazutaka;Nagata Syuichi;Setoguchi Toshiaki;Oda Junko;Matsunaga Narimasa;Shiraishi Kenji
  
• Experimental Study on Primary Energy Conversion Characteristics of Backward Bent Duct Buoy;　2007/12
  ANNOUNCEMENT INFO.;　Journal of the Japan Society of Naval Architects and Ocean Engineers, 6, 247 - 255
  AUTHOR;　TOYOTA Kazutaka;NAGATA Shuichi;IMAI Yasutaka;SETOGUCHI Toshiaki;KYOZUKA Yusaku;MASUDA Yoshio
  
• Experimental Study on Primary Energy Conversion Characteristics of Backward Bent Duct Buoy;　2007/12
  ANNOUNCEMENT INFO.;　, 6, 247-255
  AUTHOR;　Toyota Kazutaka;Nagata Shuichi;Imai Yasutaka;Setoguchi Toshiaki;Kyozuka Yusaku;Masuda Yoshio
  
• Experimental Research on Primary Conversion of a Floating OWC "Backward Bent Duct Buoy";　2007/10
  ANNOUNCEMENT INFO.;　Proc. of the Sixteenth ISOPE Conference, 475-482
  AUTHOR;　S.Nagata, K.Toyota, Y.Imai
  
• GIS processing of AVHRR/HRPT data on a research vessel;　2007/10
  ANNOUNCEMENT INFO.;　Proc. of the Sixteenth ISOPE Conference, 592-595
  AUTHOR;　Y.Imai, S.Nagata and K.Toyota
  
• The Influence of the Body Shape of Backward Bent Duct Buoy to the Primary Wave Energy Conversion Characteristics;　2007/03
  ANNOUNCEMENT INFO.;　, 12, 25-28
  AUTHOR;　Nagata Shuichi;Toyota Kazutaka;Imai Yasutaka
  
• Experimental study of drift force acting on a backward bent duct buoy (BBDB);　2007
  ANNOUNCEMENT INFO.;　OTEC, 13, 37 - 45
  AUTHOR;　Imai Yasutaka;Toyota Kazutaka;Nagata Shuichi;Setoguchi Toshiaki;Oda Junko;Matsunaga Narimasa;Shimozono Takafumi
  
• An experimental study of hydrodynamic forces acting on a submerged fin and induced velocity field;　2007
  ANNOUNCEMENT INFO.;　OTEC, 13, 47 - 54
  AUTHOR;　Oda Junko;Nagata Shuichi;Imai Yasutaka;Toyota Kazutaka;Matsunaga Narimasa;Kuchii Tomoaki
  
• The influence of the body shape of backward bent duct buoy to the primary wave energy conversion characteristics;　2006
  ANNOUNCEMENT INFO.;　OTEC, 12, 25 - 28
  AUTHOR;　Nagata Shuichi;Toyota Kazutaka;Imai Yasutaka
  
• On the Damage of the Acoustic Window at the Bottom of an Ocean Observation Ship;　2003/03
  ANNOUNCEMENT INFO.;　, 239, 123-130
  AUTHOR;　HIRAYAMA Tsugukiyo;KUDO Kimiaki;IMAI Yasutaka;TAKAYAMA Takehiko;HIRAKAWA Yoshiaki
  
• An Estimation of Environmental Impact of Large-Scale Platform using Landsat TM image;　2001/10
  ANNOUNCEMENT INFO.;　, 2001, 189, 137-141
  AUTHOR;　Imai Yasutaka
  
• An Estimation of Coastal Water Environment using Landsat TM data;　2000/12
  ANNOUNCEMENT INFO.;　, 188, 53-58
  AUTHOR;　IMAI Yasutaka;SAITO Kimio
  
• Radiation Force Acting on the Large-Scale Platform Installed in the Coastal Area;　1999/12
  ANNOUNCEMENT INFO.;　, 186, 243-253
  AUTHOR;　Imai Yasutaka
  
• Coastal environmet assessment using Landsat TM data;　1999/11
  ANNOUNCEMENT INFO.;　, 27, 321-322
  AUTHOR;　IMAI Yasutaka;SAITO Kimio
  
• Topographical Effects on Wave Exciting Forces on Huge Floating Structure (2);　1996/12
  ANNOUNCEMENT INFO.;　, 180, 383-391
  AUTHOR;　Imai Yasutaka;Ohkusu Makoto
  
• Topographical Effects on Wave Exciting Forces on a Huge Floating Structure;　1994/10
  ANNOUNCEMENT INFO.;　, 1994, 175, 131-138
  AUTHOR;　Ohkusu Makoto;Imai Yasutaka
  
• 超大型浮体式海洋構造物に作用する波力に関する研究〔含 討論〕;　1994/06
  ANNOUNCEMENT INFO.;　, 175, 131-138
  AUTHOR;　
  

Material, Commentary, Editorials, Research Report, A Comprehensive Journal Articles

• 後ろ曲げダクトブイ型波力発電装置の発電特性;　2011/10
  ANNOUNCEMENT INFO.;　, CDROM
  AUTHOR;　
  
• Research on a Method Decreasing Motions and Drift Force of a Floating Renewable Energy Facility in Waves;　2010/11
  ANNOUNCEMENT INFO.;　, 122-126
  AUTHOR;　Yasutaka Imai, Kazutaka Toyota and Shuichi Nagata
  
• Thrust Generation by Waves;　2010/11
  ANNOUNCEMENT INFO.;　Proceedings of the Ninth (2010) ISOPE Pacific/Asia Offshore Mechanics Symposium, 155-162
  AUTHOR;　Shuichi Nagata, Yasutaka Imai and Kazutaka Toyota
  
• 衛星を用いたマウンド漁礁の湧昇効果評価の可能性;　2007/10
  ANNOUNCEMENT INFO.;　, 23, 357-361
  AUTHOR;　
  
• 後ろ曲げダクトブイ型波力発電装置の一次変換特性への浮体形状影響;　2007/10
  ANNOUNCEMENT INFO.;　, 12, 25-28
  AUTHOR;　
  
• 海洋リモートセンシングの方向性;　2006/10
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 海洋地球研究船「みらい」の搭載機器と観測データ;　2006/10
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  

General Lectures

• Development of wave energy converters using cross-flow turbine;　2023/09
  ANNOUNCEMENT INFO.;　The 30th Ocean Engineering Symposium, 30
  AUTHOR;　yasutaka imai
  
• Development of a Monitoring System for Coastal Fisheries Using Wave Energy Converter;　2022/03
  ANNOUNCEMENT INFO.;　The 29th Ocean Engineering Symposium, 29
  AUTHOR;　yasutaka imai
  
• Development of marine communication system using ESP32;　2022/03
  ANNOUNCEMENT INFO.;　The 29th Ocean Engineering Symposium, 29
  AUTHOR;　yasutaka imai; takuma imazumi
  
• Flow Field Analysis around the Forced Oscillating Plate under the Free Surface by Vortex Method — 2D Viscous Fluid Analysis Based on Fundamental Equations Using Velocity and Vorticity as Unknown Quantities —;　2019
  ANNOUNCEMENT INFO.;　Journal of the Japan Society of Naval Architects and Ocean Engineers, 29, 0, 25 - 37
  AUTHOR;　Okamoto Yutaka;Nagata Shuichi;Imai Yasutaka;Niizato Hideyuki
  
• English Hydraulic power-Take-Off;　2018
  ANNOUNCEMENT INFO.;　The Proceedings of Conference of Kyushu Branch, 2018, 0, -
  AUTHOR;　IMAI Yasutaka;NAGATA Shuichi;Murakami Tengen;INOUE Ryotarou;KODAMA Yuki
  
• Study on power conversion of wave power generator using synchronous generator;　2018
  ANNOUNCEMENT INFO.;　The Proceedings of Conference of Kyushu Branch, 2018, 0, -
  AUTHOR;　IMAI Yasuka;NAGATA Shuichi;MURAKAMI Tengen;FUKAI Makoto;ITO Tetsuhisa
  
• Experimental Study on Efficiency of Impulse Turbine for Fixed OWC Type Wave Energy Conversion;　2016
  ANNOUNCEMENT INFO.;　The Proceedings of the Fluids engineering conference, 2016, 0, -
  AUTHOR;　MURAKAMI Tengen;IMAI Yasutaka;NAGATA Shuichi;TAKAO Manabu;SETOGUCHI Toshiaki
  
• Study on Bi-Directional Impulse Turbine with Flow Collector for Tidal Energy Conversion;　2016
  ANNOUNCEMENT INFO.;　Turbomachinery, 44, 8, 496 - 504
  AUTHOR;　KINOUE Yoichi;SHIOMI Norimasa;TAKAO Manabu;MURAKAMI Tengen;IMAI Yasutaka;NAGATA Shuichi
  
• Experimental Study on Primary and Secondary Conversion Efficiencies of a Fixed Oscillating Water Column Type Wave Energy Converter;　2016
  ANNOUNCEMENT INFO.;　Turbomachinery, 44, 6, 364 - 371
  AUTHOR;　MURAKAMI Tengen;IMAI Yasutaka;NAGATA Shuichi;TAKAO Manabu;SETOGUCHI Toshiaki
  
• Numerical simulation for oscillating-water-column wave energy converter;　2015
  ANNOUNCEMENT INFO.;　, 20, 59 - 65
  AUTHOR;　Imai Yasutaka;Sakanaka Rieko;Nagata Shuichi;Murakami Tengen
  
• Application of Impulse Air Turbine for Bi-Directional Flow to Tidal Energy Conversion;　2015
  ANNOUNCEMENT INFO.;　, 20, 67 - 71
  AUTHOR;　Kinoue Yoichi;Shiomi Norimasa;Takao Manabu;Nagata Shuichi;Imai Yasutaka;Murakami Tengen;Tsugami Yukio;Fujii Motoshi
  
• Experimental Study on Efficiency Improvement of Fixed OWC Type Wave Energy Converter with Impulse Turbine;　2015
  ANNOUNCEMENT INFO.;　, 20, 41 - 49
  AUTHOR;　Murakami Tengen;Imai Yasutaka;Nagata Shuichi;Takao Manabu;Setoguchi Toshiaki
  
• 0513 Experimental Study on Efficiency Improvement of Fixed Oscillating Water Column Type Wave Energy Converter;　2015
  ANNOUNCEMENT INFO.;　The Proceedings of the Fluids engineering conference, 2015, 0, _0513 - 1_-_0513-3_
  AUTHOR;　MURAKAMI Tengen;IMAI Yasutaka;NAGATA Shuichi;TAKAO Manabu;SETOGUCHI Toshiaki
  
• 2015A-GS2-4 Numerical Analysis on Primary Conversion Efficiency of a Floating Pendulum Wave Energy Converter;　2015
  ANNOUNCEMENT INFO.;　Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers, 21, 0, 243 - 245
  AUTHOR;　Nagata Shuichi;Imai Yasutaka;Murakami Tengen;Morikawa Hiroshi
  
• 2015A-GS2-1 Experimental Study on Generating Efficiency of a Floating OWC "Backward Bent Duct Buoy";　2015
  ANNOUNCEMENT INFO.;　Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers, 21, 0, 231 - 234
  AUTHOR;　Imai Yasutaka;Nagata Syuichi;Murakami Tengen;Ushijima Yohei;Setoguchi Toshiaki
  
• 自由表面をもつ流体と物体の干渉問題への渦法の適用;　2014/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• A Study on Load Characteristics of Floating Type Pendulum Wave Energy Converter;　2014
  ANNOUNCEMENT INFO.;　, 19, 39 - 46
  AUTHOR;　Murakami Tengen;Imai Yasutaka;Nagata Shuichi
  
• An Experimental Study on Primary Efficiency of a Wave Energy Converter "Backward Bent Duct Buoy" in regular wave conditions;　2014
  ANNOUNCEMENT INFO.;　Journal of the Japan Society of Naval Architects and Ocean Engineers, 19, 0, 79 - 88
  AUTHOR;　Imai Yasutaka;Nagata Shuichi;Toyota Kazutaka;Murakami Tengen
  
• 1011 An experimental study of power generation of floating pendulum-type wave energy converter;　2013/11
  ANNOUNCEMENT INFO.;　, 2013, 101101-101102
  AUTHOR;　IMAI Yasutaka;NAGATA Shuichi;TOYOTA Kazutaka
  
• Conversion Efficiency of Floating Pendulum Wave Energy Converter in 2D Regular Waves;　2013/10
  ANNOUNCEMENT INFO.;　International Symposium on Marine and Offshore Renewable Energy
  AUTHOR;　Yasutaka Imai, Shuichi Nagata, Kazutaka Toyota, Tengen Murakami, Toshiaki Setoguchi
  
• Experimental and Numerical Analysis on Conversion Efficiency of Floating Pendulum Wave Energy Converter in Regular Waves;　2013/06
  ANNOUNCEMENT INFO.;　Proc. of the 21th ISOPE Conference, 552-559
  AUTHOR;　K.Toyota, S.Nagata, Y.Imai, T.Setoguchi
  
• 渦法による自由表面下の物体に作用する流体力および周辺流場の解析;　2012/10
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 後ろ曲げダクトブイ型波力発電装置の規則波中発電性能に関する研究;　2012/08
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Application of Hamilton-Dirichlet's Principle to Analysis of Hydroelastic Behavior of an Elastic Floating Plate of Arbitrary Plan Geometry in Waves;　2012/06
  ANNOUNCEMENT INFO.;　Proceedings of the Annual International Offshore and Polar Engineering Conference
  AUTHOR;　Shuichi Nagata, Kazutaka Toyota, Yasutaka Imai, Hideyuki Niizato, Hiroshi Isshiki
  
• 302 Effect of fins attached on a floating platform;　2012/03
  ANNOUNCEMENT INFO.;　, 2012, 65, 83-84
  AUTHOR;　Imai Yasutaka;Nagata Syuichi;Toyota Kazutaka;Nishimura Naoki
  
• 301 Development of wave energy devices in overseas;　2012/03
  ANNOUNCEMENT INFO.;　, 2012, 65, 81-82
  AUTHOR;　Imai Yasutaka;Nagata Shuichi;Toyota Kazutaka
  
• Development of wave energy devices in overseas;　2012/03
  ANNOUNCEMENT INFO.;　, 128, 1, 81-82
  AUTHOR;　
  
• Effect of fins attached on a floating platform;　2012/03
  ANNOUNCEMENT INFO.;　, 128, 1, 83-84
  AUTHOR;　
  
• 301 Development of wave energy devices in overseas;　2012
  ANNOUNCEMENT INFO.;　The Proceedings of Conference of Kyushu Branch, 2012, 0, 81 - 82
  AUTHOR;　Imai Yasutaka;Nagata Shuichi;Toyota Kazutaka
  
• 1403 The Characteristics of Floating OWC "Backward Bent Duct Buoy";　2010/10
  ANNOUNCEMENT INFO.;　, 2010, 393-396
  AUTHOR;　Nagata Shuichi;Toyota Kazutaka;Imai Yasutaka;Setoguchi Toshiaki
  
• 1403 The Characteristics of Floating OWC "Backward Bent Duct Buoy";　2010
  ANNOUNCEMENT INFO.;　The Proceedings of the Fluids engineering conference, 2010, 0, 393 - 396
  AUTHOR;　Nagata Shuichi;Toyota Kazutaka;Imai Yasutaka;Setoguchi Toshiaki
  
• 2008W-G1-1 An experimental study of viscous effect on submerged oscillating fin;　2008/11
  ANNOUNCEMENT INFO.;　, 7, 12
  AUTHOR;　Nagata Shuichi;Toyota Kazutaka;Imai Yasutaka;Kuchii Tomonari;Matsunaga Narimasa;Oda Junko;Ohtsu Kousei
  
• 2008S-G3-3 Study on Hydrodynamic Characteristics of Backward Bent Duct Buoy;　2008/05
  ANNOUNCEMENT INFO.;　, 6, 315-316
  AUTHOR;　Toyota Kazutaka;Nagata Shuichi;Imai Yukitaka;Manago Yusuke
  
• 2008S-OS3-2 Experimental Study on Hydrodynamic Force on a Submerged Oscillate Fin and Fluid Velocity Field;　2008
  ANNOUNCEMENT INFO.;　Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers, 6, 0, 61 - 64
  AUTHOR;　Imai Yasutaka;Nagata Shuichi;Toyota Kazutaka;Oda Junko;Kuchii Tomonari
  
• 2008S-G3-3 Study on Hydrodynamic Characteristics of Backward Bent Duct Buoy;　2008
  ANNOUNCEMENT INFO.;　Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers, 6, 0, 315 - 316
  AUTHOR;　Toyota Kazutaka;Nagata Shuichi;Imai Yukitaka;Manago Yusuke
  
• 2008W-G1-1 An experimental study of viscous effect on submerged oscillating fin;　2008
  ANNOUNCEMENT INFO.;　Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers, 7, 0, 1 - 2
  AUTHOR;　Nagata Shuichi;Toyota Kazutaka;Imai Yasutaka;Kuchii Tomonari;Matsunaga Narimasa;Oda Junko;Ohtsu Kousei
  
• 浮体型波力発電装置(後ろ曲げダクトブイ)の一次変換性能に及ぼす浮体形状について;　2007/10
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Application of the Optical flow algorithm to satellite sea surface temperature;　2007/09
  ANNOUNCEMENT INFO.;　6th Joint Research Seminar on Ocean Energy
  AUTHOR;　Y.IMAI
  
• OS-5 : 海洋モニタリング技術の現状(オーガナイズドセッション報告,春季講演会);　2007/07
  ANNOUNCEMENT INFO.;　, 13
  AUTHOR;　
  
• 2007S-OS5-4 Application of SST mapping for the observation;　2007/05
  ANNOUNCEMENT INFO.;　, 4, 121-122
  AUTHOR;　Imai Yasutaka
  
• 2007S-OS2-10 Effect of Body Shape on Primary Conversion characteristics of a Floating Wave Energy Device "Backward Bent Duct Buoy (BBDB)";　2007/05
  ANNOUNCEMENT INFO.;　, 4, 65-68
  AUTHOR;　Toyota Kazutaka;Nagata Shuichi;Imai Yukitaka;Setoguchi Toshiaki;Kimura Tomoya;Kyozuka Yusaku;Masuda Yoshio
  
• 2007S-OS2-8 Primary conversion of the spar-buoy generator;　2007/05
  ANNOUNCEMENT INFO.;　, 4, 59-62
  AUTHOR;　Imai Yasutaka;Nagata Shuichi;Toyota Kazutaka;Manago Yusuke;Setoguchi Toshiaki;Konno Toshio
  
• 2007S-OS2-8 Primary conversion of the spar-buoy generator;　2007
  ANNOUNCEMENT INFO.;　Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers, 4, 0, 59 - 62
  AUTHOR;　Imai Yasutaka;Nagata Shuichi;Toyota Kazutaka;Manago Yusuke;Setoguchi Toshiaki;Konno Toshio
  
• 2007S-OS2-10 Effect of Body Shape on Primary Conversion characteristics of a Floating Wave Energy Device "Backward Bent Duct Buoy (BBDB)";　2007
  ANNOUNCEMENT INFO.;　Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers, 4, 0, 65 - 68
  AUTHOR;　Toyota Kazutaka;Nagata Shuichi;Imai Yukitaka;Setoguchi Toshiaki;Kimura Tomoya;Kyozuka Yusaku;Masuda Yoshio
  
• 2007S-OS5-4 Application of SST mapping for the observation;　2007
  ANNOUNCEMENT INFO.;　Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers, 4, 0, 121 - 122
  AUTHOR;　Imai Yasutaka
  
• 船舶受信衛星データのGIS展開に関する研究;　2006/12
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 2006A-OS12-9 Experimental Research on Primary Conversion of a Floating Wave Energy Device "Backward Bent Duct Buoy (BBDB)";　2006/11
  ANNOUNCEMENT INFO.;　, 3, 235-238
  AUTHOR;　Nagata Shuichi;Toyota Kazutaka;Imai Yukitaka;Setoguchi Toshiaki;Kyozuka Yusaku;Masuda Yoshio
  
• 2006A-G7-1 GIS application of AVHRR/HRPT data received on research vessel MIRAI;　2006/11
  ANNOUNCEMENT INFO.;　, 3, 477-478
  AUTHOR;　Imai Yasutaka;Kudo Kimiaki;Nagata Shuichi;Toyota Kazutaka
  
• 浮体型波力発電装置（後ろ曲げダクトブイ）の一次変換性能に関する実験的研究;　2006/10
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 2006A-G7-1 GIS application of AVHRR/HRPT data received on research vessel MIRAI;　2006
  ANNOUNCEMENT INFO.;　Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers, 3, 0, 477 - 478
  AUTHOR;　Imai Yasutaka;Kudo Kimiaki;Nagata Shuichi;Toyota Kazutaka
  
• 2006A-OS12-9 Experimental Research on Primary Conversion of a Floating Wave Energy Device "Backward Bent Duct Buoy (BBDB)";　2006
  ANNOUNCEMENT INFO.;　Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers, 3, 0, 235 - 238
  AUTHOR;　Nagata Shuichi;Toyota Kazutaka;Imai Yukitaka;Setoguchi Toshiaki;Kyozuka Yusaku;Masuda Yoshio
  
• 2005S-OS3-2 A review of assessment methods for coastal environment;　2005/06
  ANNOUNCEMENT INFO.;　, 5, 33-34
  AUTHOR;　Tabeta Shigeru;Imai Yasutaka
  
• O-99 Bathymetric survey of the seamounts at the northwestern Pacific;　2004/09
  ANNOUNCEMENT INFO.;　, 111
  AUTHOR;　Fujioka Kantaro;Imai Yasutaka;Furuta Toshio;Maki Tetuji;Hatakeyana Kiyosi;Hosoya Shin'ichi
  
• D452 「みらい」における気象観測について(海洋地球研究船『みらい』における大気観測-これまでの成果と今後の展望,専門分科会);　2004/05
  ANNOUNCEMENT INFO.;　, 85
  AUTHOR;　SUEYOSHI Souichiro
  
• On the Damage of the Acoustic Window at the Bottom of an Ocean Observation Ship;　2003/10
  ANNOUNCEMENT INFO.;　, 239, 123-130
  AUTHOR;　Hirayama Tsugukiyo;Kudo Kimiaki;Imai Yasutaka;Takayama Takehiko;Hirakawa Yoshiaki
  
• Large Earth and ocean research vessel Mirai, its operation, instrumentations, missions and BEAGLE 2003 cruise;　2003/09
  ANNOUNCEMENT INFO.;　, 110
  AUTHOR;　Fujioka K.;Okumura S.;Sueyoshi S.;Tokunaga W.;Imai Y.;Nagahama N.;Okumura S.;Maeno K.;Kimura R.;Adachi K.;Takao K.;Saito C.;Takizawa T.
  
• OS1:海洋環境のリモートセンシング(春季講演会オーガナイズトセッション報告);　2003/07
  ANNOUNCEMENT INFO.;　, 874
  AUTHOR;　
  
• 3-2 海洋観測船用船底音響窓破損原因に関する検討;　2002/11
  ANNOUNCEMENT INFO.;　, 19, 61-64
  AUTHOR;　
  
• (17) リモートセンシングを用いたメガフロートの事後評価に関する研究(平成13年春季講演論文概要);　2001/03
  ANNOUNCEMENT INFO.;　, 860
  AUTHOR;　
  
• (6) リモートセンシングを用いた閉鎖性内湾の環境評価に関する研究(平成12年秋季講演論文概要);　2000/10
  ANNOUNCEMENT INFO.;　, 856
  AUTHOR;　
  
• (28) 沿岸域に設置された大型浮体式海洋構造物に作用するRadiation流体力に関する研究(平成11年秋季講演論文概要);　1999/10
  ANNOUNCEMENT INFO.;　, 844
  AUTHOR;　
  
• (36)超大型浮体式海洋構造物に作用する波力に関する研究(その2) : 平成8年秋季講演論文概要;　1996/10
  ANNOUNCEMENT INFO.;　, 808
  AUTHOR;　
  
• 超第型浮体式海洋構造物に作用する波力に関する研究;　1994/04
  ANNOUNCEMENT INFO.;　, 778
  AUTHOR;