International Conference

1.     Takashi Irohara and Shinnosuke Kawahara, Optimization of Replenishment and Picking Processes in Robotic Mobile Fulfillment Systems with Multiple Picking Stations, Institute for the Operations Research and Management Science (INFORMS) Annual meeting, Atlanta, Georgia, USA, Oct.26-29, 2025

2.     Shun Kobayashi and Takashi Irohara, Hydrogen Supply Chain Network Optimization Considering Ammonia and Pipeline, International Conference for Production Research Asia Pacific Region (ICPR-APR) 2025, Hong Kong, China, June 18-20, 2025

3.     Kohei Yamashita, Takashi Irohara, Takashi Tanaka and Naomi Sugiyama, An algorithm considering demand of SKU in the neighborhood of simulated annealing for storage location assignment problem, Proceedings of the 24th Asia Pacific Industrial Engineering and Management Systems conference (APIEMS), Chiang Mai, Thailand, November 10th-14th , 2024

4.     Masumi Noto and Takashi Irohara, Hydrogen Supply Chain Network Considering Storage Depots with Dehydrogenation Function, Proceedings of the 24th Asia Pacific Industrial Engineering and Management Systems conference (APIEMS), Chiang Mai, Thailand, November 10th-14th , 2024

5.     Takashi Irohara, Rune Noguchi, Takashi Tanaka and Naomi Sugiyama, Metaheuristics based Order Batching and Routing in a Warehouse, IISE Annual Conference, Montreal, QC, Canada, May 18-21, 2024

6.     Rune Noguchi, Takashi Irohara, Takashi Tanaka and Naomi Sugiyama, Application of tabu-search based method to order batching and routing problems
in logistics warehouses, 7th Asian Conference of Management Science and Applications (ACMSA 2023), Okinawa, Japan, December 15-17, 2023

Proceedings of Industrial Engineering and Management. SMILE 2023. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-97-0194-0_22

7.     Kohei Yamashita, Takashi Irohara, Takashi Tanaka and Naomi Sugiyama, Simulated Annealing based algorithm for Storage Location Assignment Problem under the Mixed Shelve Strategy in a Warehouse, Proceedings of the 23rd Asia Pacific Industrial Engineering and Management Systems conference (APIEMS), Kuala Lumpur, Malaysia, October 22nd – 26th , 2023

8.     Masumi Noto and Takashi Irohara, Effectiveness of Liquid Organic Hydride in Hydrogen Supply Chain Network, Proceedings of the 23rd Asia Pacific Industrial Engineering and Management Systems conference (APIEMS), Kuala Lumpur, Malaysia, October 22nd – 26th , 2023

9.     Yuan Hanbo and Takashi Irohara, Scheduling optimization of container terminal yard crane considering noise influence, The 11th International Conference on Logistics and Maritime Systems, Busan, South Korea, September 4th-6th, 2023

10.  Kanta Shimizu and Takashi Irohara, Visualization of the ability of each worker in the disassembly line and optimization of personnel assignment using it, The 17th International Congress on Logistics and SCM Systems (ICLS2023) , August 9-12, 2023, Seoul, South Korea, 2023

11.  Wapee Manopiniwes, Takashi Irohara, Wannapha Nobnop, and Pooriwat Muangwong, Implementation of Value Stream Mapping and Mathematical Model for Patient Scheduling in Radiotherapy Treatment, 27th International Conference on Production Research, Cluj-Napoca, Romania, 23-28 July 2023

12.  Takashi Irohara, Order Batching Problem with Travel Distance Approximation in a Warehouse, IISE Annual Conference, New Orleans, LA, USA, May 20-23, 2023

13.  Muhammad Akbar, Takashi Irohara, Wisnu Aribowo and Fariz Muharram Hasby, A Mathematical Model for Inventory Minimization in Supporting Capacity Planning of a Dual Resource-Constrained Hybrid Flow Shop,  Proceedings of the Asia Pacific Industrial Engineering and Management Systems conference (APIEMS), Taichung, Taiwan, November 6-10, 2022

14.  Takashi Irohara, A Storage Assignment Heuristic for Order Picking Problem in the Mixed Shelves Warehouses, Institute for the Operations Research and Management Science (INFORMS) Annual meeting, , Indianapolis, Indiana, USA, Oct.16-19, 2022

15.  Billy Sagara and Takashi Irohara, Joint Optimization of Item Location Assignment and Task Scheduling for Tier-to-Tier Shuttle-Based Storage and Retrieval System (SBS/RS), Proceedings of the 3rd Asia Pacific International Conference on Industrial Engineering and Operations Management, Johor Bahru, Malaysia, September 13-15, 2022

16.  Amani Junaidi and Takashi Irohara, Metaheuristics based profit-oriented optimization model for the hazardous waste location routing problem, 26th International Conference on Production Research (ICPR), Online, July 18-21, 2021

17.  Runqi Hong and Takashi Irohara, Dynamic Fleet Routing, Scheduling, and Cargo Assignment for Container Shipping with Stochastic Demand in Maritime Logistics, 26th International Conference on Production Research (ICPR), Online, July 18-21, 2021

18.  Takashi Irohara, Cross Docking Network with Multiple Types of Trucks, Tenth International Conference on Industrial Engineering and Operations Management (IEOM), Dubai, United Arab Emirates, March 10-12, 2020

19.  Muhammad Akbar, Takashi Irohara, Yutaka Ito and Tomohiro Takahashi, A Dual Resource Constrained Batch Scheduling Problem with Different Operator Skills, Proceedings of the Asia Pacific Industrial Engineering and Management Systems conference (APIEMS), Kanazawa, Japan, December 2-5, 2019

20.  Junko Hosoda and Takashi Irohara, A clustering-based heuristic for location routing problem with outsourced delivery and split delivery, Proceedings of the Asia Pacific Industrial Engineering and Management Systems conference (APIEMS), Kanazawa, Japan, December 2-5, 2019

21.  Takashi Irohara, Optimal Storage assignment in Multi-level racks for order picking in parts warehouse of automotive factory, Institute for the Operations Research and Management Science (INFORMS) Annual meeting, Seattle, Washington, USA, Oct.20-23, 2019

22.  Muhammad Akbar and Takashi Irohara, A DRC Scheduling for Social Sustainability: Trade-off between Tardiness and Workload Balance, APMS 2019 International Conference Advances in Production Management Systems, Austin, TX, USA, September 1-5, 2019

23.  Junko Hosoda and Takashi Irohara, A Clustering Algorithm for Location Routing Problem with Outsourced Delivery, Third European Conference on Industrial Engineering and Operations Management (IEOM), Pilsen, Czech Republic, July 23-26, 2019

24.  Muhammad Akbar and Takashi Irohara, Finding Clues for Solving a Complex Dual Resource Constrained Scheduling Problem Using a Developed Matheuristic, International Symposium on Scheduling, Matsue, Shimane, Japan, July 5-7, 2019

25.  Takashi Irohara, Selection of Efficient Order Processing in a Warehouse Shipping System, IISE Annual Conference, Orlando, FL, USA, May 18-21, 2019

26.  Wapee Manopiniwes and Takashi Irohara, Multi-period Temporary Depot Location Problem in Flood Natural Disaster Response, Proceedings of the International Conference on Industrial Engineering and Operations Management (IEOM), Bangkok, Thailand, March 5-7, 2019

27.  Muhammad Akbar and Takashi Irohara, A social-conscious scheduling model of dual resources constrained identical parallel machine to minimize makespan and operator workload balance, Proceedings of the Asia Pacific Industrial Engineering and Management Systems conference (APIEMS), Hong Kong, December 5-8, 2018

28.  Muhammad Akbar and Takashi Irohara, A Social-Conscious Scheduling Model of Dual Resources Constrained Identical Parallel Machine to Minimize Tardiness and Maximize Operator Productivity, Computers and Industrial Engineering (CIE48), Auckland, New Zealand, Dec.2-5, 2018

29.  Junko Hosoda and Takashi Irohara, A Heuristic Algorithm for Location Routing Problem with Outsourced Delivery, Computers and Industrial Engineering (CIE48), Auckland, New Zealand, Dec.2-5, 2018

30.  Takashi Irohara, Vehicle Routing Problem with Overlapped Time Windows on Shipping from Online Store, Institute for the Operations Research and Management Science (INFORMS) Annual meeting, Phoenix, Arizona, USA, Nov.3-7, 2018

31.  Junko Hosoda and Takashi Irohara, Hybrid Approach for Location Routing Problem with Transportation Modes, 8th International Conference on Operations and Supply Chain Management (OSCM), Cranfield University, UK, September 9-12, 2018

32.  Muhammad Akbar and Takashi Irohara, Dual resource constrained scheduling considering operator working modes and moving in identical parallel machines using a permutation-based genetic algorithm, APMS 2018 International Conference Advances in Production Management Systems, Seoul National University, Seoul, Korea, August 26-30, 2018

33.  Zohreh Khojasteh-Ghamari and Takashi Irohara, Towards designing a robust supply chain network; A multi objective optimization approach, 25th International European Operations Management Association (EurOMA) Conference, Budapest, Hungary, 24-26 June 2018

34.  Wapee Manopiniwes and Takashi Irohara, Integrated humanitarian operations management in flood natural disaster, 25th International European Operations Management Association (EurOMA) Conference, Budapest, Hungary, 24-26 June 2018

35.  Takashi Irohara, Forward-Reserve Allocation Problem to Consider Combination of Replenishment Parts, IISE Annual Conference, Orlando, FL, USA, May 19-22, 2018

36.  Zohreh Khojasteh-Ghamari and Takashi Irohara, The Importance of Downstream Supply Chain in Supply Chain Risk Management: Multi-Objective Optimization, International Conference on Industrial Engineering and Operations Management (ICIEOM), Narita, Japan, April 5-6, 2018

37.  Junko Hosoda and Takashi Irohara, Location Routing Problem with transportation mode options, Proceedings of the Asia Pacific Industrial Engineering and Management Systems conference (APIEMS), Yogyakarta, Indonesia, December 3-6, 2017

38.  Takashi Irohara, Heuristics for Chute and Dock Assignment Problem in a Shipping Area of Cross-Docking Center, Institute for the Operations Research and Management Science (INFORMS) Annual meeting, Houston, Texas, USA, Oct.22-25, 2017

39.  Daniel Black and Takashi Irohara, Recourse Actions Within Inventory Systems: The Effect of Customer Service Levels, The Operational Research Society, OR59 Annual Conference, Loughborough, UK, September 12-14, 2017

40.  Takashi Irohara, Cross-dock scheduling to minimize congestion in the shipping area, IISE Annual Conference, Pittsburgh, PA, USA, May 20-23, 2017

41.  Zohreh Khojasteh Ghamari, Takashi Irohara, A multi-criteria double sourcing based optimization approach to manage the supply chain risk, 4th International Conference on Industrial Engineering, Management Science and Applications 2017, Seoul, South Korea, June 13th-15th, 2017
DOI 10.1109/ICIMSA.2017.7985576

42.  Wapee Manopiniwes and Takashi Irohara, A Framework to Robust Stochastic Optimization for Humanitarian Logistics, 120th International Conference on Science Technology and Management, Pattaya, Thailand, 10th -11th , January, 2017

43.  Takashi Irohara and Keisuke Nagasawa, An optimization procedure to solve forward-reserve allocation problem with (s, S) policy, Proceedings of the Asia Pacific Industrial Engineering and Management Systems conference (APIEMS), Taipei, Taiwan, December 7-10, 2016

44.  Keisuke Nagasawa and Takashi Irohara, Determining order-up-to level considering backorder cost per unit short on the base-stock inventory system under intermittent demand, Proceedings of the Asia Pacific Industrial Engineering and Management Systems conference (APIEMS), Taipei, Taiwan, December 7-10, 2016

45.  Wapee Manopiniwes and Takashi Irohara, Temporary Depot Location-Routing in Humanitarian Relief Logistics, 46th Annual Conference Italian Operations Research Society, Trieste, Italy, September 6-9, 2016

46.  Takashi Irohara, Truck scheduling problem to minimize congestion in cross dock warehouse, IEEE International Conference on Automation Science and Engineering(CASE) and IEEE International Symposium on Assembly and Manufacturing(ISAM), Fort Worth, Texas, USA, August 21-24, 2016

47.  Gede Agus Widyadana, Takashi Irohara and Syarif Daniel Budiman, Inventory Routing Problem for Deteriorating Items with Multi Tours, International Conference on Industrial Engineering and Operations Management, Kuala Lumpur, Malaysia, March 8-10, 2016

48.  Hiroshi Okamoto, Takashi Irohara, Hans Ehm and Géraldine Yachi, Transit planning with variable cost reduction for multi product categories in semiconductor industry, Proceedings of the Asia Pacific Industrial Engineering and Management Systems conference (APIEMS),  Ho Chi Minh City, Vietnam, December 8-11, 2015

49.  Wapee Manopiniwes and Takashi Irohara, Multi-period humanitarian logistics model considering temporary depot location in flood disaster, The 7th  International Conference on Logistics and Transport (ICLT), Lyon, France, Nov.17-20, 2015

50.  Takashi Irohara, Optimization of the order-up-to and reorder levels for each item in the forward area of warehouse, Institute for the Operations Research and Management Science (INFORMS) Annual meeting, Philadelphia, Pennsylvania, USA, Nov.1-4, 2015

51.  Keisuke Nagasawa and Takashi Irohara, Joint replenishment problem with can-order policies under purchase dependence, 23rd International Conference on Production Research (ICPR), Manila, Philippines, August 2-6, 2015

52.  Takashi Irohara, Yong-Hong Kuo and Janny M.Y. Leung, A Tri-level Programming Model for Disaster Relief Planning based on dual-ascent solution approach, 27th European Conference on Operational Research (EURO XXVII ) Annual Conference, Glasgow, UK, 12-17 July 2015

53.  Wapee Manopiniwes and Takashi Irohara, Integrated relief supply distribution and evacuation: a stochastic approach, 10th International Congress on Logistics and SCM Systems, Chiang Mai, Thailand, July 1-4, 2015

54.  Wapee Manopiniwes and Takashi Irohara, Relief Vehicle Transportation Plan: Thai Flooding Case Study, IIE Annual Conference, Nashville, Tennessee, USA, May 31 – June 3, 2015

55.  Keisuke Nagasawa,  Takashi Irohara, Yosuke Matoba and Shuling Liu, Joint replenishment problem with can-order policy under item characteristics, The first East Asia Workshop on Industrial Engineering (EAWIE), Hiroshima, Nov.7-9, 2014

56.  Wapee Manopiniwes, Keisuke Nagasawa and Takashi Irohara, Modeling Facility Locations by Optimizing Time Performance for Humanitarian Relief Logistics, The first East Asia Workshop on Industrial Engineering (EAWIE), Hiroshima, Nov.7-9, 2014

57.  Keisuke Nagasawa,  Takashi Irohara, Yosuke Matoba and Shuling Liu, Joint replenishment problem with can-order policies under carrier capacity and correlated demands, Proceedings of the Asia Pacific Industrial Engineering and Management Systems conference (APIEMS),  Jeju, Korea, October 12-15, 2014

58.  Wapee Manopiniwes, Keisuke Nagasawa and Takashi Irohara, Optimum Humanitarian Relief Logistics for Facility and Stock Location under Time Restriction: Thai Flooding Case Study, Proceedings of the Asia Pacific Industrial Engineering and Management Systems conference (APIEMS),  Jeju, Korea, October 12-15, 2014

59.  Keisuke Nagasawa, Takashi Irohara, Yosuke Matoba and Shuling Liu, Joint replenishment problem with dynamic can-order policies under carrier capacity, 18th International Symposium on Inventories, Budapest, Hungary, August 18-22, 2014

60.  Takashi Irohara, Yong-Hong Kuo and Janny M.Y. Leung, A Tri-level Programming Model for Disaster Preparedness and Relief Planning, 3rd INFORMS Transportation Science and Logistics Society Workshop, Chicago, IL, June 30-July 2, 2014

61.  Takashi Irohara and Hiromasa Akagi, Robust Supply Chain Design Under Uncertainty with Cost Increase Rate, IIE Annual Conference, Montreal, Canada, May 31 – June 3, 2014

62.  Keisuke Nagasawa,  Takashi Irohara, Yosuke Matoba and Shuling Liu, Applying genetic algorithm for can-order policies in the joint replenishment problem, Proceedings of the Asia Pacific Industrial Engineering and Management Systems conference (APIEMS),  Philippines, December 3-6, 2013

63.  Takashi Irohara, Production scheduling with the consideration of energy consumption per unit time, Institute for the Operations Research and Management Science (INFORMS) Annual meeting, Minneapolis, Minesota, USA, October 6-9, 2013

64.  Takashi Irohara, Yong-Hong Kuo and Janny M.Y. Leung, From Preparedness to Recovery: A Tri-level Programming Model for Disaster Relief Planning, Proceedings  of 4th International Conference on Computational Logistics, ICCL, Copenhagen, Denmark, September 25-27, 2013

65.  Keisuke Nagasawa,  Takashi Irohara, Yosuke Matoba and Shuling Liu, Joint replenishment problem in multi-item inventory control with carrier capacity and receiving inspection cost, The 2nd International Conference on Industrial Engineering and Service Science, Surabaya, Indonesia, August 20-22, 2013

66.  Andrew Johnson, Takashi Irohara, Ryoji Tsujiuchi, Extensions and an application of an integrated batching and sequencing model to reduce picker blocking, IIE Annual Conference, San Juan, Puerto Rico, May 18 - 22, 2013

67.  Keisuke Nagasawa,  Takashi Irohara, Yosuke Matoba and Shuling Liu, Coordinated replenishment in multi-item inventory control based on important shipping characteristics, Proceedings of the Asia Pacific Industrial Engineering and Management Systems conference (APIEMS),  pp.1986-1994, Thailand, December 2-5, 2012

68.  Takashi Irohara, Vehicle routing problem in consideration of CO2 emissions with a loading ratio, Institute for the Operations Research and Management Science (INFORMS) Annual meeting, Phoenix, AZ, USA, October 14-17, 2012

69.  Keisuke Nagasawa,  Takashi Irohara, Yosuke Matoba and Shuling Liu, Deciding ordering policy based on important shipping characteristics from Random forests, International Symposium on Reliability Engineering and Risk Management (ISRERM), Yokohama, Kanagawa, Japan, August 5-8, 2012

70.  Keisuke Nagasawa,  Takashi Irohara, Yosuke Matoba and Shuling Liu, Item  classification and policy selection based on canonical correlation analysis  and regression analysis, IIE Asian Conference, Singapore, June 28-30, 2012

71.  Takashi Irohara and Hideaki Yamashita, A Simulation Study on the Performance of Multiple Load AGVs
, IIE Annual Conference, Orlando, FL, USA, May 19 - 23, 2012

72.  Takashi Irohara and Hideaki Yamashita, Effect of lot splitting with RFID for the trade-off between the material movement and lead time, Institute for the Operations Research and Management Science (INFORMS) annual meeting, Charlotte, NC, USA, November 13-16, 2011

73.  Keisuke Nagasawa, Takashi Irohara, Yosuke Matoba and Shuling Liu, Selecting ordering system and items classification based on canonical correlation and cluster analysis, Asia Pacific Industrial Engineering and Management Science(APIEMS),  Beijing, China, October 14-17, 2011

74.  Yudong Xue, Takashi Irohara, Benjamin Klöpper and Jan-Patrick Pater, CO2 - Emission Aware Pareto Optimization for International Transportation with Time Tables, 21st International Conference on Production Research (ICPR), Stuttgart, Germany, July 31- August 4, 2011

75.  Takashi Irohara, A Heuristic Approach for Solving a Hub Location Problem, IIE Annual Conference (Industrial Engineering Research Conference), Rino, NV, USA, May 21 - 25, 2011

76.  Yudong Xue and Takashi Irohara, A Time-Space Network based International Transportation Scheduling Problem Incorporating CO2 Emission Levels,  Asia Pacific Industrial Engineering and Management Science(APIEMS), Melaka, Malaysia, December 7-10, 2010

77.  Takashi Irohara and Yudong Xue, Multi-objective optimization for transportation problem incorporating CO2 emission levels, Institute for the Operations Research and Management Science (INFORMS), Austin, TX, USA, November 6-11, 2010

78.  Takashi Irohara, A Simulation-based Comparison of Material Handling Systems in Semiconductor Facility, IIE Annual Conference and Expo (Industrial Engineering Research Conference), Cancun, Mexico, June 5 - 9, 2010

79.  Jeongja Jeong and Takashi Irohara, A scheduling based reorder point system with variable lead time in a multi-item production environment, Asia Pacific Industrial Engineering and Management Science(APIEMS), Kitakyushu, Japan, December 14-16, 2009

80.  Takashi Irohara and Naoki Uchida, Lagrangian relaxation for parallel machine scheduling with sequence-dependent set-up times, Institute for the Operations Research and Management Science (INFORMS), San Diego, CA, USA, October 11-14, 2009

81.  Takashi Irohara and Kenta Kakumoto, Optimization Model for Freight Transportation Planning Incorporating CO2 Emission Levels, Institutional Supply Chain Management (ISCM), Xifan, China, 8-10, August, 2009

82.  Takashi Irohara and Tsutomu Araki, Applications of RFID Technology for Improving Merchandise Allocation in an Apparel Retail Store, Institute for the Operations Research and Management Science (INFORMS) International Conference on Service Science (ICSS), Hong Kong, China, 6-8, August, 2009

83.  Kenta Kakumoto and Takashi Irohara, A Heuristic Method for International Transportation Scheduling Problem Incorporating CO2 Emission Levels, 20th International Conference on Production Research (ICPR), Shanghai, China, 2-6 August, 2009

84.  Susumu Fujii, Yosuke Nonogaki, Takashi Irohara and Yuichiro Miyamoto, A Study on Autonomous Distributed Operation of FMS for Small Parts Production, 20th International Conference on Production Research (ICPR), Shanghai, China, 2-6August, 2009

85.  Takashi Irohara, Performance Evaluation of the Multi-floor Pharmaceutical Factories for Solid Dosage, IIE Annual Conference and Expo 2009 (Industrial Engineering Research Conference), Miami, FL, USA, May 30 - June 3, 2009

86.  Takashi Irohara and Kenta Kakumoto, Optimization of International Transportation Scheduling Problem Incorporating CO2 Emission Levels, International Symposium of Case Studies involving Statistics and Operations Research for Decision Making: Solving Human Problems in Business, Society and Scientific Areas, The Institute of Statistical Mathematics, Tokyo, Japan, March 2nd, 2009

87.  Takashi Irohara, Facility layout and buffer allocation for overhead hoist transport in semiconductor fabrication facilities, Asia Pacific Industrial Engineering and Management Science(APIEMS), Indonesia, December 3-5, 2008

88.  Takashi Irohara, Multi-floor Facility Layout Methodology with Location Matrix, Institute for the Operations Research and Management Science (INFORMS), Washington DC, USA, October12-15, 2008

89.  Susumu Fujii, Tomomitsu Motohashi, Takashi Irohara, Yuichiro Miyamoto and Satoko Moriguchi, A Study on Job Shop Scheduling Based on Two-way Auction in Ubiquitous Environment, Advances in Production Management Systems (APMS), Espoo, Finland, September 14-17, 2008

90.  Yosuke Nonogaki, Susumu Fujii, Takashi Irohara, Satoko Moriguchi and Yuichiro Miyamoto, A Study on an auction-based operation for FMS with a single automated vehicle, International Symposium on Flexible Automation, Atlanta, GA, USA, June 23-26, 2008

91.  Takashi Irohara, A Stochastic Facility Layout Problem with Delivery-dispatching Rules for AGV, 10th International Material Handling Research Colloquium (IMHRC), Dortmund, Germany, May 28 – June 2, 2008

92.  Takashi Irohara, Yuta Takahashi, Hybrid flowshop scheduling to minimize total weighted tardiness and earliness with sequence-dependent setup times, IIE Annual Conference and Expo 2008@(Industrial Engineering Research Conference), Vancouver, Canada, May 17-21, 2008

93.  Takashi Irohara, Lagrangian relaxation algorithms for hybrid flow-shop scheduling problems with limited buffers, Asia Pacific Industrial Engineering and Management Science(APIEMS), Kaohsiung, Taiwan, ROC, December 9-12, 2007

94.  Takashi Irohara and Marc Goetschalckx, Decomposition Solution Algorithms for the Multi-Floor Facility Layout Problem with Elevators, 19th International Conference on Production Research (ICPR), Valparaiso, Chile, July 29-August 3, 2007

95.  Takashi Irohara and Marc Goetschalckx, Formulations and Optimal Solution Algorithms for the Multi-Floor Facility Layout Problem with Elevators, IIE Annual Conference and Expo 2007@(Industrial Engineering Research Conference), Nashville, TN, USA, May 19-23, 2007

96.  Koji Watanabe, Kazuya Toizumi and Takashi Irohara, Lagrangian Decomposition and Coordination based Algorithm to Solve an  Unrelated Parallel Machine Scheduling Problem, International Symposium on Flexible Automation, Osaka, Japan, July 10-12, 2006

97.  Takashi Irohara and Takuya Yamada, Simultaneous Design of Block and Detailed Layout based on Location Matrix, 18th International Conference on Production Research (ICPR), Salerno, Italy, July 31-August 4, 2005

98.  Takashi Irohara, Hiroaki Fujikawa and Yutaka Shirai, Multi-storied Facility Layout Problem Considering Initial Cost and Running Cost Simultaneously, 35th International Conference on Computers & Industrial Engineering, Istanbul, Turkey, June 19-22, 2005

99.  Takashi Irohara and Yasuo Mitamura, Lagrangian decomposition and coordination based algorithm to solve a two-stage hybrid flowshop scheduling problem, Asia Pacific Industrial Engineering and Management Science(APIEMS), Brisbane, Australia, December 12-15, 2004

100.  Takashi Irohara, Hirokazu Hayashi and Hiroaki Fujikawa, 3D layout problem to minimize auxiliary machine area and total piping length in semiconductor fabrication facilities, Proceedings of the Pacific Congress on Manufacturing and Management(PCMM), pp.1147-1154, Brisbane, Australia, December 8-10, 2004

101.  Hiroaki Fujikawa and Takashi Irohara, Vehicle Routing Problem with Container Loadings based on Tabu Search", Proceedings of the 1st International Congress on Logistics and SCM systems(ICLS 2004), pp.210-217, Waseda University, Tokyo, Japan, November 21-24, 2004

102.  Takashi Irohara and Takuya Yamada, Location matrix based design methodology for the facility layout problem including aisles and door locations, 8th International Material Handling Research Colloquium (IMHRC), Graz, Austria, June 13-17, 2004

103.  Takashi Irohara, Hideaki Yamashita and Yo Ishizuka, A Stochastic Facility Layout Problem with AGV assignment, 17th International Conference on Production Research (ICPR), Blacksburg, Virginia, USA, August 3-7, 2003

104.  Takashi Irohara, Takuya Yamada, and Hiroaki Fujikawa, Integrated Design Methodology for the Facility Layout and Aisle Structure using Location Matrix, Decision Science Institute 7th International Conference and 8th Annual Meeting of Asia Pacific Decision Science Institute, Shanghai, China, July 4-8, 2003

105.  Takashi Irohara, Hideaki Yamashita and Yo Ishizuka, A Stochastic Facility Layout Problem --- Minimizing Lead Time in Manufacturing Systems with Variable Processing Times, Proceedings of Pacific Congress on Manufacturing and Management(PCMM), pp.630-635, Thailand(Bangkok), Nov.27-29, 2002

106.  Takashi Irohara, Yutaka Shirai and Hiroaki Fujikawa, Multi-Storied Facility Layout Problem considering Column Position and Aisle, Engineering Design and Automation(EDA), Maui, USA, August 4-7, 2002

107.  Takashi Irohara, Hideaki Yamashita and Yo Ishizuka, Facility Layout and Buffer Space Allocation Problems in Production Systems, 16th International Conference on Production Research (ICPR), Prague, Czech Republic", July 29-August 2, 2001

108.  Yo Ishizuka, Takashi Irohara, Osamu Itoh and Hideaki Yamashita, Facility Layout Problems for Maximum Production Efficiency, 16th International Conference on Production Research (ICPR), Prague, Czech Republic", July 29-August 2, 2001

109.  Takashi Irohara and Tatsuya Kai, Multi-floor Facility Layout Technique by Multi-objective Optimization based on the Genetic Algorithm, Engineering Design and Automation(EDA),"Orland, USA",August,2000

110.  Hiroyuki Muramatsu, Takashi Irohara and Kazuho Yoshimoto, A Genetic Algorithm-Based Approach to Cellular Manufacturing Systems Design Problem, 15th International Conference on Production Research (ICPR), Limerick, Ireland, August, 1999

111.  Takashi Irohara, Junya Morita, Kazuho Yoshimoto and Hiroaki Fujikawa, A Heuristic Layout Algorithm for Multiple-floor Facilities, Pacific Congress on Manufacturing and Management (PCMM), Brisbane, Australia, August,1998

112.  Makoto Sugiyama, Weerapat Sessomboon, Takashi Irohara and Kazuho Yoshimoto, A design technique of AGV flow path by considering machine layout, American Society for the Mechanical Engineers, USA, November, 1997

113.  Takashi Irohara and Kazuho Yoshimoto, A Heuristic Algorithm to Solve the Layout Problem of Refinery and Petrochemical Plant, Institute for the Operations Research and Management Science (INFORMS), Dallas, TX, USA, October, 1997

114.  Takashi Irohara, Weerapat Sessomboon and Kazuho Yoshimoto, A Layout Technique Integrating Algorithm for Changing Assignment of Rectangular Departments into Simulated Annealing, Engineering Design and Automation(EDA), Bangkok, Thailand,March,1997

115.  Weerapat Sessomboon, Takashi Irohara and Kazuho Yoshimoto, An Integrated Approach of SA based Heuristics and Simulation for the Design of Unidirectional AGVs with Multiple Criteria, Engineering Design and Automation(EDA), Bangkok, Thailand, March, 1997

116.  Takashi Irohara and Kazuho Yoshimoto, A Simulated Annealing Based Heuristic Algorithm to Solve the Huge Size Rectilinear Facility Layout Problem, Institute for the Operations Research and Management Science (INFORMS), Atlanta, GA, USA, November, 1996

117.  Takashi Irohara and Kazuho Yoshimoto, A Layout Technique to Solve the Rectilinear Facility Layout Problem with Constraints on Department Dimensions, Institute for the Operations Research and Management Science (INFORMS), New Orleans, LA, USA,November,1995

118.  Takashi Irohara and Kazuho Yoshimoto, Development of an Improvement-type Layout Technique for Unequal Department Shapes and Areas, Institute for the Operations Research and Management Science (INFORMS), Detroit, MI, USA, October, 1994