国際会議講演論文
2023 2022 2021 2020 2019 2018 2017 2016
2015 2014 2013 2012 2011 2010 2009 2008
2007 2006 2005 2004 2003 2002 2001 1990–2000 （年）
〔2023〕
Apr.－ Dec.
T. Wakui, K. Tanaka, R. Yokoyama, Reduction Effect of Dynamic Loads of Floating Offshore Wind Turbine-Generator Systems by Feedforward Control Based on Wind Speed, Proceedings of the Grand Renewable Energy 2022 International Conference (GRE2022), Vol. 2, Papar No. 31, (2023), pp. 1-4.
Jan.－ Mar.
B. Zhang, T. Wakui, R. Yokoyama, Column Generation-based Time-Domain Decomposition for Seasonal Operation Planning Problems of Energy Storage and Supply Systems, Proceedings of the International Conference on Power Engineering-2023 (ICOPE-2023), Paper No. 1278, (2023), pp. 1-4.
T. Wakui, K. Tanaka, R. Yokoyama, Load Mitigation of Floating Offshore Wind Turbine-Generator Systems by Combining Preview Wind-Based Feedforward and Harmonic Individual Blade Pitch Manipulations, Proceedings of the International Conference on Power Engineering-2023 (ICOPE-2023), Paper No. 1280, (2023), pp. 1-4.
Apr. － Dec.
R. Yokoyama, Y. Shinano and T. Wakui, Day and Time Aggregations for Optimal Design of Energy Supply Systems with Storage Units by a Hierarchical MILP Method, Proceedings of the 35th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2022), Paper No. 146 (2022), pp. 1891-1902.
R. Yokoyama, T. Masuyama and T. Wakui, Optimal Operation of a Heat Supply System in Consideration of Discrete and Nonlinear Characteristics Based on a Mixed-Integer Quadratic Model, Proceedings of the 35th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2022), Paper No. 167 (2022), pp. 1949-1960.
R. Yokoyama, Y. Hiramatsu, Y. Shinano and T. Wakui, Evaluation of Robustness in Multiple Performance Criteria for Designing Energy Supply Systems Based on a Mixed-Integer Linear Model, Proceedings of the 35th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2022), Paper No. 166 (2022), pp. 1937-1948.
T. Wakui, T. Matsumoto and R. Yokoyama, Optimal Operation of Vapor-compression Type Air-conditioning System Based
on Hierarchical Utilization of Model Predictive Control and Multiple Feedback Controls, Proceedings of the 35th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2022), Paper No. 515 (2022), pp. 2127-2138.
Jan. － Mar.
〔2021〕
Apr. － Dec.
T. Wakui, B. Zhang and R. Yokoyama, Long-Term Operational Planning of Energy Storage and Supply Systems Based on Time-Domain Decomposition, Proceedings of the International Conference on Power Engineering-2021 (ICOPE-2021), Paper No. 191 (2021), pp. 1-4.
T. Wakui, K. Tanaka and R. Yokoyama, Reduction in Platform Motion and Dynamic Loads of a Floating Offshore Wind Turbine-Generator System by Feedforward Control Using Previewed Wind Speed, Proceedings of the International Conference on Power Engineering-2021 (ICOPE-2021), Paper No. 252 (2021), pp. 1-4.
T. Wakui, H. Okamura and R. Yokoyama, Optimization of Operating Condition of Vapor-Compression Type Air-Conditioning Systems Based on Genetic Algorithm and Cycle Simulation, Proceedings of the International Conference on Power Engineering-2021 (ICOPE-2021), Paper No. 279 (2021), pp. 1-4.
Jan. － Mar.
〔2020〕
Apr. － Dec.
R. Yokoyama, H. Kamada, Y. Shinano and T. Wakui, A Hierarchical Optimization Approach to Robust Design of Energy Supply Systems Based on a Mixed-Integer Linear Model, Proceedings of the 33rd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2020), (2020), pp. 601-613.
R. Yokoyama, Y. Okawa, T. Wakui and S. Yoshida, Comparison of Alternative Constraints for Equipment Minimum Up and Down Times in Robust Optimal Operation of Energy Supply Systems, Proceedings of the 33rd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2020), (2020), pp. 614-626.
R. Yokoyama, K. Takeuchi, Y. Shinano and T. Wakui, Effect of Model Reduction by Time Aggregation in Multiobjective Optimal Design of Energy Supply Systems by a Hierarchical MILP Method, Proceedings of the 33rd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2020), (2020), pp. 627-639.
H. Ono, Y. Otani, M. Matsuo, T. Yamaguchi and R. Yokoyama, Optimal Operation of Heat Source and Air Conditioning System With Thermal Storage Tank Using Nonlinear Programming, Proceedings of the 33rd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2020), (2020), pp. 747-758.
T. Wakui, T. Matsumoto, H. Okamura and R. Yokoyama, Dynamic Cycle Simulation of Vapor-Compression Type Air-Conditioning Systems Using Zeotropic Refrigerant Mixture Based on Hierarchical Solution Method, Proceedings of the 33rd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2020), (2020), pp. 991-1004.
T. Wakui, H. Okamura and R. Yokoyama, Hierarchical Solution Framework for Performance Analysis of Vapor-Compression Type Air-Conditioning Systems Using Zeotropic Refrigerant Mixture, Proceedings of the 33rd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2020), (2020), pp. 1005-1017.
T. Wakui, A. Nagamura and R. Yokoyama, Stabilization of Power Output and Platform Motion of a Floating Offshore Wind Turbine-Generator System Using Model Predictive Control Based on Previewed Disturbances, Proceedings of the 33rd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2020), (2020), pp. 1327-1339.
T. Wakui, M. Hashiguchi and R. Yokoyama, Structural Design of Distributed Energy Networks by a Combination of Variable- and Constraint-Based Decomposition Methods, Proceedings of the 33rd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2020), (2020), pp. 1847-1859.
Jan. － Mar.
Apr. － Dec.
R. Yokoyama, Y. Shinano, K. Takeuchi and T. Wakui, Operation-Based Time-Period Clustering for Optimal Design of Energy Supply Systems by a Hierarchical MILP method, Proceedings of the 32nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2019), (2019), pp. 527-539.
R. Yokoyama, K. Haizuka and T. Wakui, Analysis on Cooperation Between Central Power Utility and Distributed Cogeneration Systems by Bilevel Mixed-Integer Linear Programming, Proceedings of the 32nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2019), (2019), pp. 1663-1674.
T. Wakui, M. Hashiguchi and R. Yokoyama, Cooperative Operation Planning of Distributed Energy Systems With Power and Heat Interchange Networks Using Column Generation-Based Decomposition Approach, Proceedings of the 32nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2019), (2019), pp. 2863-2875.
R. Yokoyama, Y. Shinano and T. Wakui, Evaluation of Design Alternatives for a Cogeneration System Based on Multiobjective K-Best Solutions, Proceedings of the International Conference on Power Engineering (ICOPE-2019), (2019), pp. 1112-1117.
T. Wakui, A. Nagamura and R. Yokoyama, Model Predictive Control of Floating Offshore Wind Turbine-Generator Systems Based on Preview of Wind Speed and Wave Height, Proceedings of WindEurope Offshore 2019, (2019), pp. 1-13.
Jan. － Mar.
Apr. － Dec.
R. Yokoyama, Y. Shinano, Y. Wakayama and T. Wakui, Model Reduction by Time Aggregation for Optimal Design of Energy Supply Systems by an MILP Hierarchical Branch and Bound Method, Proceedings of the 31st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2018), Paper No. 118 (2018), pp. 1-13.
R. Yokoyama, Y. Shinano, Y. Wakayama and T. Wakui, Optimal Design of a Gas Turbine Cogeneration Plant by a Hierarchical Optimization Method With Parallel Computing, Proceedings of the ASME TURBO EXPO 2018, Paper No. GT2018-76469 (2018), pp. 1-12.
T. Wakui, K. Sawada, R. Yokoyama and H. Aki, Model Predictive Operations Management for Energy Supply Networks Based on Forecast Scenario Generation and Two-Stage Stochastic Programming, Proceedings of the 31st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2018), Paper No. 423 (2018), pp. 1-13.
T. Wakui, T. Nishioka and R. Yokoyama, Dynamic Load Analysis of a Large-Scale Vertical Axis Wind Turbine-Generator System Using Aero-Elastic-Control Coupled Simulation, Proceedings of the Grand Renewable Energy 2018, Paper No. P-We-21 (2018), pp. 1-4.
Jan. － Mar.
Apr. － Dec.
R. Yokoyama, Y. Shinano, Y. Wakayama and T. Wakui, Multiobjective Optimal Design of a Gas Turbine Cogeneration Plant by a Revised Hierarchical Optimization Method, Proceedings of the ASME TURBO EXPO 2017, Paper No. GT2017-64296 (2017), pp. 1-14.
R. Yokoyama, A. Tokunaga and T. Wakui, Robust Optimal Design of Energy Supply Systems Under Uncertain Energy Demands Based on a Mixed-Integer Linear Model, Proceedings of the 30th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2017), Paper No. 282 (2017), pp. 1-12.
T. Wakui, K. Sawada, R. Yokoyama and H. Aki, Operations Management of Energy Supply Networks Based on Two-Stage Multi-Objective Schedule Planning, Proceedings of the 30th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2017), Paper No. 272 (2017), pp. 1-12.
H. Aki, T. Wakui, R. Yokoyama and K. Sawada, Optimal Management of Multiple Heat Sources in a Residential Area by Integrated-Distributed Energy Management System (IDEMS), Proceedings of the 30th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2017), Paper No. 112 (2017), pp. 1-11.
T. Wakui, D. Miyanaga and R. Yokoyama, Sensitivity Analysis of Weight Coefficients of Model Predictive Control in a Floating Offshore Wind Turbine-Generator System, Proceedings of WindEurope Conference 2017, Paper No. PO.285 (2017), pp. 1-10.
T. Wakui, M. Yonesugi and R. Yokoyama, Aero-Elastic-Control Coupled Simulation of Vertical Axis Wind Turbine-Generator System, Proceedings of WindEurope Conference 2017, Paper No. PO.286 (2017), pp. 1-10.
Jan. － Mar.
Apr. － Dec.
T. Wakui, D. Miyanaga, M. Yoshimura and R. Yokoyama, Model Predictive Control for Reducing Power Output Fluctuations and Platform Motions in a Floating Offshore Wind Turbine-Generator System, Proceedings of the 15th World Wind Energy Conference, Paper No. PS-B-3 (2016), pp. 1-4.
T. Wakui, D. Miyanaga and R. Yokoyama, Gain-Scheduled Control of Blade Loads in a Wind Turbine-Generator System by Individual Blade Pitch Manipulation, (2016). Proceedings of the WindEurope Summit 2016, Paper No. PO126 (2016), pp. 1-9.
H. Aki, T. Wakui and R. Yokoyama, Optimum Management of Fuel Cells in a Residential Area by Integrated-Distributed Energy Management System (IDEMS), Proceedings of the 2016 IEEE Power and Energy Society Innovative Smart Grid Technologies Conference, Paper No. 7781156 (2016), pp. 1-5.
R. Yokoyama, R. Nakamura, T. Wakui and Y. Shinano, Evaluation of Performance Robustness of a Gas Turbine Cogeneration Plant Based on a Mixed-Integer Linear Model, Proceedings of the ASME TURBO EXPO 2016, Paper No. GT2016-56217 (2016), pp. 1-9.
R. Yokoyama, R. Nakamura and T. Wakui, Performance Comparison of Energy Supply Systems Under Uncertain Energy Demands Based on a Mixed-Integer Linear Model, Proceedings of the 29th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2016), Paper No. 269 (2016), pp. 1-13.
R. Yokoyama, H. Kitano and T. Wakui, Optimal Operation of Heat Supply Systems With Piping Network, Proceedings of the 29th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2016), Paper No. 224 (2016), pp. 1-15.
T. Wakui, H. Kawayoshi, R. Yokoyama, H. Iitaka and H. Aki, Optimal Operational Management of Residential Energy Supply Networks With Power and Heat Exchanges, Proceedings of the 29th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2016), Paper No. 419 (2016), pp. 1-20.
Jan. － Mar.
Apr. － Dec.
R. Yokoyama, Y. Shinano, S. Taniguchi, M. Ohkura and T. Wakui, Generation of Multiple Best Solutions in Multiobjective Optimal Design of Energy Supply Systems, Proceeding of the International Conference on Power Engineering-15 (ICOPE-15), Paper No. 1077 (2015), pp. 1-12.
R. Yokoyama, M. Ohkura and T. Wakui, Robust Optimal Design of a Gas Turbine Cogeneration Plant Under Uncertain Energy Demands and Costs, Proceedings of the ASME TURBO EXPO 2015, Paper No. GT2015-42296 (2015), pp. 1-13.
R. Yokoyama, M. Fujita, M. Ohkura and T. Wakui, Relative Performance Evaluation of Energy Supply Systems Under Uncertain Energy Demands, Proceedings of the 28th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2015), Paper No. 50776 (2015), pp. 1-12.
T. Wakui, M. Yoshimura and R. Yokoyama, Power and Platform Motion Controls Based on Combined Manipulation of Blade Pitch and Generator Torque in a Floating Offshore Wind Turbine-Generator System, Proceeding of the International Conference on Power Engineering-15 (ICOPE-15), Paper No. 1099 (2015), pp. 1-12.
T. Wakui, M. Yonesugi and R. Yokoyama, Performance Analytical Model of Vertical Axis Wind Turbines for Floating Offshore Systems, Proceedings of the EWEA 2015, Paper No. PO.194 (2015), pp. 1-10.
T. Wakui, M. Yoshimura and R. Yokoyama, Comparative Analysis of Generator Torque Manipulation Methods for Platform Motion Control in Spar-Type Floating Offshore System, Proceedings of the EWEA 2015, Paper No. PO.215 (2015), pp. 1-10.
T. Wakui, H. Kawayoshi, R. Yokoyama, H. Iitaka and H. Aki, Operational Management of Residential Energy Supply Networks Based on Optimization Approaches, Proceedings of the 28th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2015), Paper No. 51459 (2015), pp. 1-12.
T. Wakui, T. Hashikawa, R. Yokoyama and T. Kaneko, Dynamic Cycle Simulation of a Multi-Split Type Electric Air-Conditioning System for Buildings, Proceeding of the International Conference on Power Engineering-15 (ICOPE-15), Paper No. 1075 (2015), pp. 1-12.
H. Aki, H. Iitaka, T. Wakui, R. Yokoyama and H. Kawayoshi, Domestic Hot Water Demand Prediction by Bottom-up Approach for Energy Management Systems, Proceedings of the 4th International Conference on Microgeneration and Related Technologies, Session Pa-II-A (2015), pp. 24-30.
Jan. － Mar.
T. Wakui, M. Yoshimura and R. Yokoyama, Novel Control Parameter Setting for Rotor Speed of Spar-Type Floating Offshore Wind Turbine-Generator System, Proceedings of the EWEA Offshore 2015, Paper No. PO. 055 (2014), pp. 1-10.
Apr. － Dec.
R. Yokoyama, M. Ohkura and T. Wakui, Performance Analysis of a Multi-Functional CO2 Heat Pump Water Heating System by Numerical Simulation, Proceedings of the 27th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2014), Paper No. 49 (2014), pp. 1-10.
R. Yokoyama, M. Ohkura and T. Wakui, Robust Optimal Operation of a Gas Turbine Cogeneration Plant Under Uncertain Energy Demands, Proceedings of the ASME TURBO EXPO 2014, Paper No. GT2014-25027 (2014), pp. 1-13.
T. Wakui and R. Yokoyama, Reduction in Power Output Fluctuations by a Parallel-Variable Speed Operation Using Multiple Wind Turbines, Proceedings of the Grand Renewable Energy 2014, Paper No. P-Wd-2-28 (2014), pp. 1-4.
T. Wakui, K. Matsuo and R. Yokoyama, Impact Analysis of Design Parameters on Performance of Straight-Wing Vertical Axis Wind Turbine-Generator Systems, Proceedings of the Grand Renewable Energy 2014, Paper No. P-Wd-2-37 (2014), pp. 1-4.
T. Wakui, H. Kawayoshi and R. Yokoyama, Optimal Structural Design of Residential Power and Heat Source Devices in Consideration of Operational and Capital Recovery Constraints, Proceedings of the 27th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2014), Paper No. 121 (2014), pp. 1-20.
M. Ohkura, Y. Kinoshita, R. Yokoyama and T. Wakui, Optimal Operation of Air Conditioners in Domestic Use by Genetic Algorithm, Proceedings of the 27th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2014), Paper No. 115 (2014), pp. 1-11.
Jan. － Mar.
Apr. － Dec.
Jan. － Mar.
T. Wakui, S. Furukawa and R. Yokoyama, Dynamic Simulation of a Parallel-Variable Speed Operation of Multiple Wind Turbines, Proceedings of the European Wind Energy Conference 2013, Paper No. PO. 179 (2013), pp. 1-10.
Apr. － Dec.
R. Yokoyama and S. Ose, Optimization of Energy Supply Systems in Consideration of Hierarchical Relationship Between Design and Operation, Proceedings of the 25th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2012), (2012), pp. 389-1-13.
R. Yokoyama, R. Kato, T. Wakui and K. Takemura, Performance Estimation and Optimal Operation of a CO2 Heat Pump Water Heating System, Proceedings of the 25th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2012), (2012), pp. 344-1-15.
T. Wakui and R. Yokoyama, Optimal Structural Design of Residential Cogeneration Systems Considering Their Operational Restrictions, Proceedings of the 25th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2012), (2012), pp. 224-1-16.
S. Mori, T. Matsuo and M. Ohkura, Minimum Regret Climate Policy With Act-Then-Learn Decision (A New Model Framework Under Long-Term Uncertainties), Proceedings of the 12th IAEE European Conference, (2012), pp. 1-9.
Jan. － Mar.
T. Wakui and R. Yokoyama, Novel Control Strategy of Large Wind Turbines to Reduce Power Output Fluctuation and Pitch Angle Operated Frequency, Proceedings of the EWEA 2011 European Wind Energy Conference, Paper No. PO.309 (2011), pp. 1-10.
R. Yokoyama, Optimal Operation of a Gas Turbine Cogeneration Plant in Consideration of Equipment Minimum Up and Down Times, Proceedings of the ASME TURBO EXPO 2011, Paper No. GT2011-46260 (2011), pp. 1-10.
T. Wakui, N. Wada and R. Yokoyama, Feasibility Study on Combined Use of Residential SOFC Cogeneration System and Plug-in Hybrid Electric Vehicle From Energy-Saving Viewpoint, Book of Abstracts and Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2011), (2011), pp. 154, 1034-1045.
R. Yokoyama and N. Akiba, Fundamental Analysis on Energy Consumption and Environmental Impact of Electric Vehicles in Consideration of Using Fast Battery Chargers, Book of Abstracts and Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2011), (2011), pp. 295, 2277-2287.
R. Yokoyama, T. Itoyama and T. Wakui, Condition Monitoring and Analysis for Operational Management of Air Conditioning Units by Gas Engine Heat Pumps, Book of Abstracts and Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2011), (2011), pp. 229, 1732-1741.
T. Wakui and R. Yokoyama, Power Output Fluctuation Analysis of Grid-Connected Turbine-Generator System With Limiting Maximum Power Output, Proceedings of the ASME 2011 5th International Conference on Energy Sustainability (ES 2011), Paper No. ES2011-54716 (2011), pp. 1-9.
R. Yokoyama, Exergy Analysis of CO2 Heat Pump Water Heating Systems, Proceedings of the 7th International Symposium on Environmentally Conscious Design and Inverse Manufacturing (EcoDesign 2011), (2011), pp. 120-125.
U. Zuhdi, S. Mori, M. Ohkura and U. S. Putro, Industrial Structural Changes in Japan Between 1995 and 2005, Proceedings of the Pan-Pacific Conference XXVIII, (2011), pp. 137-139.
S. Mori, M. Ohkura and T. Ohkura, A Model for the Evaluation of Potential Energy Conservation of Data Centre Focusing on the Air Conditioning Options in Japan, Proceedings of the 25th Conference EnviroInfo of the Expert Committee, (2011), pp. 280-289.
T. Wakui and R. Yokoyama, Optimal Sizing of Residential SOFC Cogeneration Unit for Power Interchange Operation From Energy-Saving Viewpoint, Book of Abstracts and Proceedings of the 23rd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2010), Paper No. 341 (2010), pp. 71, 1-8.
R. Yokoyama, Y. Kohno, T. Wakui and K. Takemura, Performance Analysis of a CO2 Heat Pump Water Heating System Under a Daily Change in a Simulated Demand, Proceedings of the 5th Asian Conference on Refrigeration and Air-Conditioning, Paper No. 046 (2010), pp. 1-9.
A. Uehara, T. Hashizume, T. Wakui, A. Yoshino, A. Kadoguchi and N. Miyaji, Diagnosis of Aerated Flow at Water Line with Coriolis Flowmeter Using Hilbert Transform, Proceedings of the SICE Annual Conference 2010, (2010), pp. 1682-1687.
T. Wakui, T. Satonaka and R. Yokoyama, Power Output Fluctuation Assessment of a Large-Scale Wind Turbine-Generator System Under Wind Speed Fluctuation, Proceedings of the International Conference on Power Engineering 2009 (ICOPE-09), Vol. 1, Paper No. C108 (2009), pp. 1-173-178.
T. Wakui and R. Yokoyama, Optimal Sizing of Residential Gas Engine Cogeneration Systems for Power Interchange Operation From Energy-Saving Viewpoint, Proceedings of the 22nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2009), (2009), pp. 655-664.
R. Yokoyama, T. Wakui and K. Takemura, Parametric Study on Performance of a CO2 Heat Pump Water Heating System Under a Daily Change in a Standardized Demand, Proceedings of the International Conference on Power Engineering 2009 (ICOPE-09), Vol. 3, Paper No. C302 (2009), pp. 3-145-150.
A. Uehara, J. Eino, T. Hashizume, T. Wakui, N. Miyaji and Y. Yuki, Diagnostics of Impulse Line Blockage with a Multi-sensing Differential Pressure Transmitter at the Air Line, Proceedings of the 10th International Conference on Fluid Control, Measurements, and Visualization, Paper No. 175 (2009), pp. 1-12.
T. Wakui, R. Yokoyama and K. Shimizu, Suitable Operational Strategy for Power Interchange Operation Using Multiple Residential SOFC Cogeneration Systems, Proceedings of the 21st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2008), Vol. V (2008), pp. 1819-1826.
R. Yokoyama, T. Wakui, J. Kamakari and K. Takemura, Performance Analysis of a CO2 Heat Pump Water Heating System Under a Daily Change in a Standardized Demand, Proceedings of the 21st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2008), Vol. I (2008), pp. 391-399.
J. Eino, A. Uehara, T. Wakui, T. Hashizume, N. Miyaji and Y. Yuki, Monitoring of Impulse Line Blockage Using Phase Difference Between Upstream and Downstream Pressures of the Orifice, Proceedings of the ASME Power, Paper No. POWER 2008-60058 (2008), pp. 1-6.
A. Uehara, J. Eino, T. Hashizume, T. Wakui, N. Miyaji and Y. Yuki, Diagnostics of Impulse Line Blockage with Multi-sensing Differential Pressure Transmitter in Oil Line, Proceedings of the SICE Annual Conference 2008, (2008), pp. 2977-2982.
R. Yokoyama, S. Okagaki, T. Wakui and K. Takemura, Effect of Storage Tank Configurations on Performance Enhancement of a CO2 Heat Pump Water Heating System, Proceedings of the 20th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2007), Vol. I (2007), pp. 595-602.
T. Wakui, R. Yokoyama, I. Tamura and A. Kegasa, Effect of Power Interchange Operation of Multiple Household Gas Engine Cogeneration Systems on Energy-Saving, Proceedings of the 20th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2007), Vol. II (2007), pp. 1517-1524.
R. Yokoyama, Optimal Configuration Design of Gas Turbine Cogeneration Plants by a MILP Decomposition Approach, CD-ROM Proceedings of the 52nd ASME International Gas Turbine and Aeroengine Technical Congress and Exposition (ASME TURBO EXPO 2007), Paper No. GT2007-27565 (2007), pp. 1-10.
J. Eino, T. Wakui, T. Hashizume, Y. Saito and T.Nishijima, Simple Diagnostic of Heat Exchanging Process with a Few FOUNDATION Fieldbus Devices, Proceedings of the 20th International Congress and Exhibition on Condition Monitoring and Diagnostic Engineering Management, (2007), pp. 565-574.
J. Eino, T. Hashizume, T. Wakui, N. Miyaji, K. Kuromori and Y. Yuki, Diagnostics of Impulse Line Blockage in Water Line with Transient State, Proceedings of the 9th International Symposium on Fluid Control, Measurements, and Visualization, Paper No. 53 (2007), pp. 1-8.
N. Miyaji, K. Kuromori, Y. Yuki, T. Hashizume, J. Eino, A. Uehara, and T. Wakui, Practical Techniques of Impulse Line Blocking Diagnostics at Actual Plants, Proceedings of the ISA Expo Technical Conference, Paper No. 67 (2007), pp. 1-9.
R. Yokoyama and K. Ito, Performance Evaluation of Gas Turbine Cogeneration Plants Using a Design Optimization Tool: OPS-Design, CD-ROM Proceedings of the 51st ASME International Gas Turbine and Aeroengine Technical Congress and Exposition (ASME TURBO EXPO 2006), Paper No. GT2006-90611 (2006), pp. 1-10.
R. Yokoyama, S. Okagaki, K. Ito and K. Takemura, Performance Analysis of a CO2 Heat Pump Water Heating System by Numerical Simulation With a Simplified Model, Proceedings of the 19th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2006), Vol. 3 (2006), pp. 1353-1360.
S. Yoshida, K. Ito and R. Yokoyama, Sensitivity Analysis in Structural Optimization of Energy Supply Systems for a Hospital, Proceedings of the 19th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2006), Vol. 1 (2006), pp. 561-568.
J. Eino, T. Wakui, T. Hashizume, N. Miyaji, Y. Saito, T. Nishijima and H. Kuwayama, Detection of Impulse Line Blockage Using a Digital Differential Pressure Transmitter, Proceedings of the 19th International Congress & Exhibition on Condition Monitoring and Diagnostic Engineering Management, (2006), pp. 425-434.
Y. Yuki, K. Kuromori, N. Miyaji, T. Hashizume, J. Eino and T. Wakui, Impulse-Line Blockage Diagnostics of Differential-Pressure Transmitters, Proceedings of the SICE-ICCAS International Joint Conference 2006, (2006). pp. 4698-4702.
R. Yokoyama, M. Inui and K. Ito, Prediction of Energy Demands Using Neural Network by a Global Optimization Method, Proceedings of the 18th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2005), Vol. 2, (2005), pp. 609-616.
R. Yokoyama, T. Shimizu, K. Ito and K. Takemura, Influence of Ambient Temperatures on Performance of a CO2 Heat Pump Water Heating System, Proceedings of the 18th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2005), Vol. 2, (2005), pp. 1097-1104.
R. Yokoyama, S. Takeuchi and K. Ito, Thermoeconomic Analysis and Optimization of a Gas Turbine Cogeneration Unit by a Systems Approach, CD-ROM Proceedings of the 50th ASME International Gas Turbine and Aeroengine Technical Congress and Exposition (ASME TURBO EXPO 2005), Paper No. GT2005-68392 (2005), pp. 1-7.
S. Yoshida, S. Gamou, K. Ito, T. Enokido and R. Yokoyama, An Optimal Renewal Planning of Energy Supply Systems from Economic Viewpoint, Proceedings of the International Conference on Power Engineering-05 (ASME Power Conference 2005), Part 2, (2005), pp. 1477-1483.
T. Wakui, J. Eino, T, Hashizume, Y. Saito and T. Nishijima, Monitoring and Diagnosis of Hot Water Supply Process Using FOUNDATION Fieldbus, Proceedings. of the 15th Annual Joint ISA POWID/EPRI Controls and Instrumentation Conference, Paper No. 458-P026 (2005), pp.1-12.
T. Wakui, J. Eino, T, Hashizume, Y. Saito and T. Nishijima, Monitoring and Diagnosis of Heat Exchanging Process Including Field Devices with FOUNDATION Fieldbus, Proceedings of the 18th International Congress & Exhibition on Condition Monitoring and Diagnostic Engineering Management, (2005), pp.113-122.
S. Gamou, K. Ito and R. Yokoyama, Analysis of Optimal Unit Numbers and Sizes for Microturbine Cogeneration Systems, CD-ROM Proceedings of the 49th ASME International Gas Turbine and Aeroengine Technical Congress and Exposition (ASME TURBO EXPO 2004), Paper No. GT2004-53793 (2004), pp. 1-7.
S. Gamou, K. Ito and R. Yokoyama, Optimal Operational Planning of Cogeneration Systems With Microturbine and Desiccant Air-Conditioning Units, CD-ROM Proceedings of the 49th ASME International Gas Turbine and Aeroengine Technical Congress and Exposition (ASME TURBO EXPO 2004), Paper No. GT2004-53683 (2004), pp. 1-9.
R. Yokoyama and K. Ito, Optimal Design of Gas Turbine Cogeneration Plants in Consideration of Discreteness of Equipment Capacities, CD-ROM Proceedings of the 49th ASME International Gas Turbine and Aeroengine Technical Congress and Exposition (ASME TURBO EXPO 2004), Paper No. GT2004-53678 (2004), pp. 1-9.
R. Yokoyama and K. Ito, Global Optimization for Neural Network Back Propagation by Modal Trimming Method, Proceedings of the Third China-Japan-Korea Joint Symposium on Optimization of Structural and Mechanical Systems (CJK-OSM 3), (2004), pp. 639-644.
S. Gamou, K. Ito and R. Yokoyama, Parametric Study on Economic Feasibility of Microturbine Cogeneration Systems by an Optimization Approach, CD-ROM Proceedings of the 48th ASME International Gas Turbine and Aeroengine Technical Congress, Exposition and Users Symposium (ASME TURBO EXPO 2003), Paper No. GT2003-38382 (2003), pp. 1-8.
S. Gamou, K. Ito, R. Yokoyama and S. Yoshida, Structural Optimization of an Energy Supply System From Economic Viewpoint, Proceedings of the International Conference on Power Engineering-03, Vol. 1, (2003), pp. 1-37-42.
A. Nishino, H. Yamamori, R. Yokoyama and K. Ito, Optimal Operation of a Gas Turbine Cogeneration Plant With Steam Injection and Inlet Air Cooling, Proceedings of the International Conference on Power Engineering-03, Vol. 2, (2003), pp. 2-7-12.
R. Yokoyama and K. Ito, Evaluation of Operational Performance of Gas Turbine Cogeneration Plants Using an Optimization Tool: OPS-Operation, CD-ROM Proceedings of the 48th ASME International Gas Turbine and Aeroengine Technical Congress, Exposition and Users Symposium (ASME TURBO EXPO 2003), Paper No. GT2003-38381 (2003), pp. 1-10.
R. Yokoyama, K. Ito and T. Murata, Robust Optimal Design in Multistage Expansion of a Gas Turbine Cogeneration Plant Under Uncertain Energy Demands, CD-ROM Proceedings of the 48th ASME International Gas Turbine and Aeroengine Technical Congress, Exposition and Users Symposium (ASME TURBO EXPO 2003), Paper No. GT2003-38375 (2003), pp. 1-10.
K. Ito, R. Yokoyama and S. Raita, Optimization of Infrastructure for Heat Supply and Distribution, Proceedings of the International Symposium on Highly Efficient Use of Energy and Reduction of Its Environmental Impact, Sessions on Distributed Autonomous Urban Energy Systems for Mitigating Environmental Impact, (2002), pp. 46-51.
R. Yokoyama and K. Ito, Effect of Inlet Air Cooling by Ice Storage on Unit Sizing of a Gas Turbine Cogeneration Plant, CD-ROM Proceedings of the 47th ASME International Gas Turbine and Aeroengine Technical Congress, Exposition and Users Symposium (ASME TURBO EXPO 2002), Paper No. GT-2002-30484 (2002), pp. 1-8.
S. Gamou, K. Joko, R. Yokoyama and K. Ito, Economic Feasibility Study of Micro Gas Turbine Cogeneration Systems by an Optimization Approach, 46th ASME International Gas Turbine and Aeroengine Technical Congress, Exposition and Users Symposium (ASME TURBO EXPO 2001), Paper No. 2001-GT-411 (2001), pp. 1-8.
K. Kamimura, R. Yokoyama and K. Ito, Optimal Scheduling for Computer-Aided Operation of District Heating and Cooling Plants, Proceedings of the ASHRAE Asia Pacific Conference on the Built Environment, Vol. I, (2001), pp. 273-281.
H. Sugihara, R. Takao, K. Tsuji, R. Yokoyama, K. Ito and K. Nara, A Planning Model of Integerated Energy Service Systems for a Specific Area, Proceedings of the IFAC Symposium on Large Scale Systems: Theory and Applications, (2001), pp. 164-169.
R. Yokoyama and K. Ito, Multiobjective Robust Optimal Design of a Gas Turbine Cogeneration Plant Under Uncertain Energy Demands, 46th ASME International Gas Turbine and Aeroengine Technical Congress, Exposition and Users Symposium (ASME TURBO EXPO 2001), Paper No. 2001-GT-208 (2001), pp. 1-8.
R. Yokoyama and K. Ito, Evaluation of Operational Performance of a Gas Turbine Cogeneration Plant With Intake Air Cooled by Ice Storage, 45th ASME Gas Turbine and Aeroengine Technical Congress, Exposition and Users Symposium (ASME TURBO EXPO 2000), Paper No. 2000-GT-304 (2000), pp. 1-8.
S. Gamou, R. Yokoyama and K. Ito, Multiobjective Optimal Unit Sizing of Fuel Cell Cogeneration Systems in Consideration of Uncertainty of Energy Demands, Proceedings of the 3rd International Fuel Cell Conference, (1999), pp. 169-172.
S. Gamou, R. Yokoyama and K. Ito, Optimal Unit Sizing of Cogeneration Systems in Consideration of Uncertain Energy Demands as Continuous Random Variables, Proceedings of the International Conference on Efficiency, Costs, Optimization, Simulation and Environmental Aspects of Energy Systems (ECOS '99), (1999), pp. 203-208.
K. Kamimura, T. Mukai, Y. Nishi, R. Yokoyama and K. Ito, Development of an Optimal Operational Planning System Using an Object-Oriented Framework for Energy Supply Plants, Proceedings of the 6th International Building Performance Simulation Association Conference (Building Simulation '99 Kyoto), Vol. III, (1999), pp. 1269-1276.
N. Karino, T. Shiba, K. Ito and R. Yokoyama, Effect of Optimizing Supply Water Temperature and Air Volume on a VAV System, CD-ROM Proceedings of the International Conference on Renewable and Advanced Energy Systems for the 21st Century, Paper No. RAES99-7634 (1999), pp. 1-8.
T. Shiba, K. Ito, R. Yokoyama and S. Sakashita, Optimal Capacity Planning of a Brewery's Energy Supply Plant Using Its Simulation Model Based on LabVIEW, Proceedings of Symposium on Thermodynamics and the Design, Analysis, and Improvement of Energy Systems, 1999 ASME International Mechanical Engineering Congress and Exposition, AES-Vol. 39, (1999), pp. 497-504.
T. Shiba, K. Ito, R. Yokoyama, S. Sakashita and Y. Himura, Optimal Planning of a Cascade-Type Multistage Refrigeration System for a Beverage Plant, CD-ROM Proceedings of the International Conference on Renewable and Advanced Energy Systems for the 21st Century, Paper No. RAES99-7619 (1999), pp. 1-8.
R. Yokoyama and K. Ito, Robust Optimal Design of a Gas Turbine Cogeneration Plant Based on Minimax Regret Criterion, 44th ASME Gas Turbine and Aeroengine Technical Congress, Exposition and Users Symposium (ASME TURBO EXPO '99), Paper No. 99-GT-128 (1999), pp. 1-8.
R. Yokoyama, K. Ito, K. Kamimura and F. Miyasaka, Development and Evaluation of an Advisory System for Optimal Operation of a District Heating and Cooling Plant, CD-ROM Proceedings of the International Conference on Renewable and Advanced Energy Systems for the 21st Century, Paper No. RAES99-7641 (1999), pp. 1-9.
R. Yokoyama, K. Ito and K. Sato, Evaluation of Economic Robustness of Gas Turbine Cogeneration Plants With Variable Heat to Power Ratios, Proceedings of the International Gas Turbine Congress 1999 Kobe, Vol. I, (1999), pp. 381-388.
R. Yokoyama and K. Ito, Analysis of Cooperation Between Central Power Utility and Dispersed Cogeneration Systems Through Time-of-Use Pricing, 43rd ASME Gas Turbine and Aeroengine Congress, Exposition and Users Symposium (ASME TURBO EXPO '98), Paper No. 98-GT-199 (1998), pp. 1-8.
K. Ito, S. Gamou and R. Yokoyama, Optimal Unit Sizing of Fuel Cell Cogeneration Systems in Consideration of Performance Degradation, Proceedings of the Florence World Energy Research Symposium, (1997), pp. 31-38.
T. Shiba, K. Ito, R. Yokoyama and M. Ohtsu, Optimal Capacity Planning Problem of Energy Supply Systems Including Thermal Storage Tanks, Proceedings of the 7th International Conference on Thermal Energy Storage, Vol. 1, (1997), pp. 211-216.
R. Yokoyama and K. Ito, A Combinatorial Optimization Approach to Real-Time Equipment Startup/Shutdown Scheduling for Energy Supply Systems, Extended Abstracts and CD-ROM Proceedings of the International Symposium on Optimization and Innovative Design, Paper No. 115 (1997), pp. 150-151(Extended Abstracts) and 1-10 (CD-ROM Proceedings).
R. Yokoyama and K. Ito, Evaluation of Robustness in Economic and Energy Saving Characteristics of a Cogeneration System, Proceedings of the International Conference on Power Engineering-97 (ICOPE-97), Vol. 1, (1997), pp. 35-40.
R. Yokoyama and K. Ito, Optimal Operation of a Gas Turbine Cogeneration Plant in Consideration of Equipment Startup/Shutdown Cost, 42nd ASME Gas Turbine and Aeroengine Congress, Exposition, and Users Symposium (ASME TURBO EXPO '97), Paper No. 97-GT-173 (1997), pp. 1-8.
K. Ito, R. Yokoyama and M. Shimoda, Optimal Planning of a Super Waste Incineration Cogeneration Plant, 41st ASME Gas Turbine and Aeroengine Congress, Exposition, and Users Symposium (ASME TURBO EXPO '96), Paper No. 96-GT-384, (1996), pp. 1-8.
K. Ito, S. Gamou and R. Yokoyama, Comparison of Economical and Energy-Saving Characteristics between Gas Turbine and Fuel Cell Cogeneration Systems, 9th Congress and Exposition on Gas Turbines in Cogeneration and Utility, Industrial and independent power Generation (ASME COGEN TURBO POWER '95), Paper No. 95-CTP-008, (1995), pp. 1-8.
K. Ito, T. Shiba and R. Yokoyama, Optimal Operational Planning of an Energy Supply Plant with Multiple Thermal Storage Tanks for District Heating and Cooling, Proceedings of the CSPE-JSME-ASME International Conference on Power Engineering-95 (ICOPE-95), Vol. 1, (1995), pp. 1-6.
K. Ito, R. Yokoyama, S. Gamou and Y. Matsumoto, A Multiobjective Optimal Planning of Cogeneration Systems with Pressurized Phosphoric Acid Fuel Cells, Proceedings of the CSPE-JSME-ASME International Conference on Power Engineering-95 (ICOPE-95), Vol. 1, (1995), pp. 103-108.
K. Ito, R. Yokoyama and Y. Matsumoto, Effect of Steam Injected Gas Turbines on the Unit Sizing of a Cogeneration Plant, 39th International Gas Turbine and Aeroengine Congress and Exposition (ASME TURBO EXPO '94), Paper No. 94-GT-59, (1994), pp. 1-8.
R. Yokoyama and K. Ito, Feasibility Study of Phosphoric Acid Fuel Cell Cogeneration Systems by Multiobjective Optimal Unit Sizing, Proceedings of the 29th Intersociety Energy Conversion Engineering Conference, Vol. II, (1994), pp. 823-828.
K. Ito, T. Shiba, R. Yokoyama and S. Sakashita, An Optimal Operational Advisory System for a Brewery's Energy Supply Plant, Proceedings of the JSME-ASME International Conference on Power Engineering-93, Vol. I, (1993), pp. 7-12.
K. Ito, R. Yokoyama, S. Gamou and Y. Matsumoto, Effects of Electric Wheeling on Cooperative Cogeneration Systems Installed into Multi-Areas, Proceedings of the JSME-ASME International Conference on Power Engineering-93, Vol. I, (1993), pp. 363-369.
R. Yokoyama and K. Ito, Acquisition of Operational Knowledge of an Industrial Gas Turbine Cogeneration Plant by Optimization, 38th International Gas Turbine and Aeroengine Congress and Exposition (ASME TURBO EXPO '93), Paper No. 93-GT-82, (1993), pp. 1-7.
R. Yokoyama and K. Ito, Multiobjective Optimization in Unit Sizing of a Gas Turbine Cogeneration Plant, Proceedings of the 7th Congress and Exposition on Gas Turbines in Cogeneration and Utility, Industrial and Independent Power Generation, (1993), pp. 645-653.
R. Yokoyama and K. Ito, Optimal Operational Planning of Cogeneration Systems With Thermal Storage by the Decomposition Method, Proceedings of the 7th Congress and Exposition on Gas Turbines in Cogeneration and Utility, Industrial and Independent Power Generation, (1993), pp. 633-640.
Y. Yuasa, R. Yokoyama and K. Ito, Optimal Planning of Hybrid Power Generation Systems Utilizing Photovoltaic and Wind Energy, Proceedings of the JSME-ASME International Conference on Power Engineering-93, Vol. I, (1993), pp. 465-470.
Y. Matsumoto, R. Yokoyama and K. Ito, Optimal Multistage Expansion Planning of a Gas Turbine Cogeneration Plant, Proceedings of the 6th Congress and Exposition on Gas Turbines in Cogeneration and Utility, Industrial and Independent Power Generation, (1992), pp. 43-49.
K. Ito, R. Yokoyama and T. Shiba, Optimal Operation of a Cogeneration Plant in Combination with Electric Heat Pumps, Proceedings of the 5th International Symposium and Exposition on Gas Turbine in Cogeneration, Repowering and Reak-Lood Power Generation, (1991), pp. 371-378.
R. Yokoyama and K. Ito, An Evaluation of Gas Turbine Cogeneration Plants for a District Energy Supply Center, Proceedings of the 1991 Yokohama International Gas Turbine Congress, Vol. I, (1991), pp. 121-128.
R. Yokoyama, K. Ito and Y. Matsumoto, Optimal Sizing of a Gas Turbine Cogeneration Plant in Consideration of Its Operational Strategy, Proceedings of the 5th International Symposium and Exposition on Gas Turbines in Cogeneration, Repowering and Reak-Load Power Generation, (1991), pp. 363-370.
K. Ito, R. Yokoyama and Y. Matsumoto, Optimal Operation of Cogeneration Plants with Steam Injected Gas Turbines, Proceedings of the 4th International Symposium and Exposition on Gas Turbines in Cogeneration, Repowering and Peak-Load Power Generation, (1990), pp. 93-100.