Tokushima University / Educator and Researcher Directory --- Okushima, Masashi

Personal Web Page

https://researchmap.jp/masashi.okushima (researchmap)

Field of Study

○	Traffic Engineering
○	Transport Planning
○	Soft Computing

Subject of Study

○	Traffic Simulation System, Traffic Management, Traffic Safety Measure (Traffic Flow, Traffic Control, Route Navigation, Traffic Safety Measure)
○	Travel Behaviour Analisys, Toll System, Public Transport Policy (Travel Behaviour Analisys, Congestion Pricing, Toll of Expressway, Bus System)
○	Artificial Society, Genetic Algorithm, Fuzzy Neuro Modelling, Machine Learning (Artificial Society, Multi-Agent Simulation, Machine Learning, Genetic Algorithm, Fuzzy-Neuro Model)

Book / Paper

Book:

1.	Akiyama Takamasa, Inokuchi Hiroaki, Utsunomiya Kiyohito, Ogawa Keiichi, Masashi Okushima and Muto Shinichi : Development of urban transport policy for a carbon-free society, 勁草書房, Tokyo, May 2021.
2.	Akiyama Takamasa, Masashi Okushima, Muto Shinichi and Inokuchi Hiroaki : Quick Master of Applied Mathematical Techniques for Planning, CORONA PUBLISHING CO.,LTD, Tokyo, Jan. 2018.
3.	Engineers Society of Civil Japan, Kobayashi Kiyoshi, Hideo Yamanaka, Masashi Okushima and 他126名 : Handbook of Infrastructure Planning and Management, CORONA PUBLISHING CO.,LTD, Tokyo, Mar. 2017.
4.	Kazuo Kuwahara, Yuzo Iida, Masashi Okushima, Nobuo Takahashi, Ryouta Horiguchi, Takaaki Monji, Toshio Yoshii, Takashi Ohguchi, Hiroaki Okamura, Makoto Ohara, Hisashi Kubota, Hisatomo Hanafusa and Hideo Moritsu : Recommendation of Putting into Practical Use of Traffic Simulation, Japan Society of Traffic Engineers, Jan. 2012. (Keyword) Traffic Simulation
5.	Madhu Errampalli, Masashi Okushima and Akiyama Takamasa : Fuzzy Logic based Microscopic Traffic Simulation Model, the VDM Verlag Dr. Muller & GmbH & Co. KG, Germany, Jul. 2011.
6.	Iida Yasunori, Kitamura Ryuichi, Akiyama Takamasa, Kawasaki Masashi, Uno Nobuhiro, Fujii Satoshi, Kurauchi Fumitaka, Kikuchi Akira, Shiomi Yasuhiro, Masashi Okushima and Others : Urban Transport Planning for Information Era, CORONA PUBLISHING CO.,LTD, Tokyo, Oct. 2010.
7.	Takaji Suzuki, Takamasa Akiyama, Keiichi Ogawa, Masashi Okushima, Shinichi Mutou and Akiyoshi Takagi : Economic Analysis of Traffic Safety, 勁草書房, Apr. 2009. (Keyword) Economic Analysis / Traffic Safety

Academic Paper (Judged Full Paper):

1.	Shuji Makita, Tetsuya Toyoda, Masashi Okushima and Tomokuni Mizunoue : Revisiting Determinants of Completed Cohort Fertility -An Empirical Study by means of Panel Data by Prefecture-, Journal of Social Security Research, Vol.8, No.4, 505-523, 2024. (Link to Publication Site) ● Publication site (DOI): 10.50870/0002000286 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390018198843685120 ● Search Scopus @ Elsevier (DOI): 10.50870/0002000286 (DOI: 10.50870/0002000286, CiNii: 1390018198843685120)
2.	Kenta Chohshi and Masashi Okushima : STUDY ON TRAFFIC MANAGEMENT DURING LARGE-SCALE REPAIR OF MAJOR ROAD BRIDGES IN TOKUSHIMA CITY, Japanese Journal of JSCE, Vol.79, No.20, 1-14, 2023. (Keyword) traffic simulation / road construction / route choice / time dispersion / road lane operation (Link to Publication Site) ● Publication site (DOI): 10.2208/jscejj.23-20027 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.2208/jscejj.23-20027 (DOI: 10.2208/jscejj.23-20027)
3.	Tetsuya Toyoda, Masashi Okushima and Makita Shuji : Return Migration in Non-metropolitan Areas and Residential Environment Evaluation: A Case Study of Tokushima Prefecture, 日本都市学会年報, Vol.55, 179-188, 2023. (Keyword) migration of population / regional inequalities / social survey / living environment (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520576756481584256 (CiNii: 1520576756481584256)
4.	Shuji Makita, Tetsuya Toyoda, Masashi Okushima and Tomohiro Muzunoue : An Empirical Study of Tokushima Prefecture Natives Returning to Tokushima for their First Job: U-turn Behavior, Planning and Public Management, Vol.45, No.4, 47-50, 2022. (Keyword) migration of population / social survey (Link to Publication Site) ● Publication site (DOI): 10.14985/jappm.45.4_47 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390575960083796480 ● Search Scopus @ Elsevier (DOI): 10.14985/jappm.45.4_47 (DOI: 10.14985/jappm.45.4_47, CiNii: 1390575960083796480)
5.	Xuewen DONG, Masashi Okushima and Kojiro WATANABE : EVALUATION FOR EFFECTIVE ALLOCATION OF ADMINISTRATIVE SERVICE FACILITY IN LOCAL CITY -CASE STUDY ON THE IMPACT OF BRANCH ABOLITION-, Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management), Vol.77, No.5, 385-394, 2022. (Keyword) administrative service facilities / efficiency / fairness / evaluation model (Tokushima University Institutional Repository) ● Metadata: 118182 (Link to Publication Site) ● Publication site (DOI): 10.2208/jscejipm.77.5_i_385 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390855046383969024 ● Search Scopus @ Elsevier (DOI): 10.2208/jscejipm.77.5_i_385 (Tokushima University Institutional Repository: 118182, DOI: 10.2208/jscejipm.77.5_i_385, CiNii: 1390855046383969024)
6.	Masashi Okushima, Kotaro Toyoda, Kojiro WATANABE and Hideo Yamanaka : ANALYSIS OF RESIDENTIAL AREA CHOICE FOR NEWLY BUILT DETACHED HOUSE IN TOKUSHIMA URBAN AREA CONSIDERING DISASTER RISK, FAMILIES LIVING NEARBY, HOMETOWN, Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management), Vol.75, No.6, I_171-I_180, 2020. (Keyword) residential area / tsunami disaster / families living nearby / hometown (Tokushima University Institutional Repository) ● Metadata: 118589 (Link to Publication Site) ● Publication site (DOI): 10.2208/jscejipm.75.6_I_171 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390846609823270016 ● Search Scopus @ Elsevier (DOI): 10.2208/jscejipm.75.6_I_171 (Tokushima University Institutional Repository: 118589, DOI: 10.2208/jscejipm.75.6_I_171, CiNii: 1390846609823270016)
7.	Masashi Okushima, Hideo Yamanaka and Kojiro WATANABE : Analysis of Residence Preference Considering Heterogeneity of Household in Local Area with Tsunami Risk, Journal of Human and Environmental Symbiosis, Vol.36, No.1, 32-43, 2020. (Keyword) Residence preference / Tsunami risk / Heterogeneity / Local area (Link to Publication Site) ● Publication site (DOI): 10.32313/jahes.36.1_32 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390566775132417024 ● Search Scopus @ Elsevier (DOI): 10.32313/jahes.36.1_32 (DOI: 10.32313/jahes.36.1_32, CiNii: 1390566775132417024)
8.	Hideo Yamanaka, Masashi Okushima, 井若和久 and Kojiro WATANABE : リスク分散型近居による災害からの生活再建への寄与, Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management), Vol.75, No.5, I_45-I_52, 2019. (Tokushima University Institutional Repository) ● Metadata: 117512 (Link to Publication Site) ● Publication site (DOI): 10.2208/jscejipm.75.I_45 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390565134811857920 ● Search Scopus @ Elsevier (DOI): 10.2208/jscejipm.75.I_45 (Tokushima University Institutional Repository: 117512, DOI: 10.2208/jscejipm.75.I_45, CiNii: 1390565134811857920)
9.	Hidetoshi Tanida and Masashi Okushima : ANALYSIS OF LIFE CYCLE COST ON LONG-TERM MANAGEMENT FOR MULTIPLE BRIDGES CONSIDERING TRAFFIC FLOW, Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management), Vol.75, No.5, I_1009-I_1019, 2019. (Keyword) life cycle cost / traffic assignment / road user cost / asset management (Tokushima University Institutional Repository) ● Metadata: 118587 (Link to Publication Site) ● Publication site (DOI): 10.2208/jscejipm.75.I_1009 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390846609788086528 ● Search Scopus @ Elsevier (DOI): 10.2208/jscejipm.75.I_1009 (Tokushima University Institutional Repository: 118587, DOI: 10.2208/jscejipm.75.I_1009, CiNii: 1390846609788086528)
10.	Hidetoshi Tanida and Masashi Okushima : Analysis of Long-term Management for Multiple Bridges Considering Road User Cost, JSTE Journal of Traffic Engineering, Vol.5, No.2, 311-318, 2019. (Keyword) Life Cycle Cost / Traffic Assignment / Preventive Maintenance (Tokushima University Institutional Repository) ● Metadata: 118586 (Link to Publication Site) ● Publication site (DOI): 10.14954/jste.5.2_A_311 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390564238075436672 ● Search Scopus @ Elsevier (DOI): 10.14954/jste.5.2_A_311 (Tokushima University Institutional Repository: 118586, DOI: 10.14954/jste.5.2_A_311, CiNii: 1390564238075436672)
11.	Yusuke Kondoh and Masashi Okushima : ANALYSIS OF MOBILITY ON INCONVENIENT AREA OF PUBLIC TRANSPORT IN LOCAL CITY -CASE STUDY ON TOKUSHIMA CITY-, Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management), Vol.74, No.5, I_1179-I_1186, 2019. (Keyword) mobility / regional transport / accessibility / availability (Tokushima University Institutional Repository) ● Metadata: 118585 (Link to Publication Site) ● Publication site (DOI): 10.2208/jscejipm.74.I_1179 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282763084954240 ● Search Scopus @ Elsevier (DOI): 10.2208/jscejipm.74.I_1179 (Tokushima University Institutional Repository: 118585, DOI: 10.2208/jscejipm.74.I_1179, CiNii: 1390282763084954240)
12.	Hideki Numata and Masashi Okushima : ANALYSIS OF ROUTE CHOICE ON THE RAIL NETWORK IN KEIHANSHIN URBAN AREA, Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management), Vol.74, No.5, I_919-I_924, 2019. (Keyword) rail network / route choice / c-logit model / person trip survey (Tokushima University Institutional Repository) ● Metadata: 118584 (Link to Publication Site) ● Publication site (DOI): 10.2208/jscejipm.74.I_919 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.2208/jscejipm.74.I_919 (Tokushima University Institutional Repository: 118584, DOI: 10.2208/jscejipm.74.I_919)
13.	Masashi Okushima : Integrated Network Transport Simulator to Evaluate Transport Policy for Reduction of Carbon Dioxide Emission, Transportation Research Procedia, Vol.34, 283-290, 2018. (Keyword) greenhouse gas emission / multi-agent simulation / hierarchical Bayesian modeling / carbon tax (Tokushima University Institutional Repository) ● Metadata: 115818 (Link to Publication Site) ● Publication site (DOI): 10.1016/j.trpro.2018.11.043 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-85063386689 (Tokushima University Institutional Repository: 115818, DOI: 10.1016/j.trpro.2018.11.043, Elsevier: Scopus)
14.	Kazuhisa Iwaka, Hideo Yamanaka, 浜大吾郎, Masashi Okushima and Kojiro WATANABE : 津波脅威下にある沿岸集落におけるリスク分散型近居に向けた実践とその展望, Journal of Human and Environmental Symbiosis, Vol.33, 5-12, 2018.
15.	Masashi Okushima, Hideo Yamanaka and Kojiro WATANABE : Analysis of sustainability on urban structure considering tsunami disaster risk, Global Environmental Research, Vol.22, No.2, 185-192, 2017. (Keyword) tsunami disaster / urban structure / population / driving distance / greenhouse gas (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520853832627556096 (CiNii: 1520853832627556096)
16.	Masashi Okushima, Takuwa Misaki and Akio Kondo : ANALYSIS OF INTENTION FOR MODAL SHIFT ON COMMUTING TRIP WITH COMBINATION OF ENVIRONMENTAL INFORMATION AND ADVICE FOR HEALTH, Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management), Vol.73, No.5, I_1129-I_1137, 2017. (Keyword) mobility management / commuting mode / concern for health / concern for environment (Tokushima University Institutional Repository) ● Metadata: 112911 (Link to Publication Site) ● Publication site (DOI): 10.2208/jscejipm.73.I_1129 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.2208/jscejipm.73.I_1129 (Tokushima University Institutional Repository: 112911, DOI: 10.2208/jscejipm.73.I_1129)
17.	Masashi Okushima : Multi-Agent Simulation for Promoting Clean Energy Vehicle with Economical Measure, Journal of Japan Society for Fuzzy Theory and Intelligent Informatics, Vol.28, No.5, 846-854, 2016. (Summary) マルチエージェントシミュレーションでは，社会的相互作用を容易に記述可能である．本研究では，経済的インセンティブ政策，航続可能距離延伸，充電インフラ整備およびクリーンエネルギー車両(CEV)の多様化によるCEVの普及促進効果を推計するために，マルチエージェントCEV普及シミュレーションを構築する．提案するマルチエージェントシミュレーションは，車種決定プロセス，排出量算定プロセスおよび相互作用プロセスで構成される．車種決定に関しては，世帯の異質性を考慮して社会的同調効果に影響される点をモデルで表現する．また，エージェント間の関係をスモールワールドネットワークモデルで表現する．このマルチエージェントCEV普及シミュレーションにより，世帯の異質性と社会的同調効果を考慮してCEVの普及と温室効果ガス排出状況の推移が観察可能となる． (Keyword) multi-agent simulation / social conformity / small world network / clean energy vehicle / heterogeneity (Tokushima University Institutional Repository) ● Metadata: 118583 (Link to Publication Site) ● Publication site (DOI): 10.3156/jsoft.28.846 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.3156/jsoft.28.846 (Tokushima University Institutional Repository: 118583, DOI: 10.3156/jsoft.28.846)
18.	Akiyama Takamasa, Inokuchi Hiroaki and Masashi Okushima : Modeling Analysis of The Urban Expressway Toll Policy Corresponding to Long Term Traffic Demand, 高速道路と自動車, Vol.59, No.7, 20-28, 2016. (Keyword) 対距離料金 / 都市高速道路 / 利用者均衡配分 / 長期的交通需要変化 / 維持管理費用 (Tokushima University Institutional Repository) ● Metadata: 118592 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1050016571769061376 (Tokushima University Institutional Repository: 118592, CiNii: 1050016571769061376)
19.	Inokuchi Hiroaki, Masashi Okushima and Akiyama Takamasa : Application of distance based toll for individual route in urban expressways, JSTE Journal of Traffic Engineering, Vol.2, No.4, 9-15, 2016. (Keyword) 都市高速道路 / 交通量配分 / 対距離料金 / 路線別料金 / 次善料金 (Tokushima University Institutional Repository) ● Metadata: 118591 (Link to Publication Site) ● Publication site (DOI): 10.14954/jste.2.4_A_9 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.14954/jste.2.4_A_9 (Tokushima University Institutional Repository: 118591, DOI: 10.14954/jste.2.4_A_9)
20.	Inokuchi Hiroaki, Masashi Okushima and Akiyama Takamasa : Influence on Passenger Flow by the Secular Change of Keihanshin Railway Network, The Japanese Journal of Transportation Economics, Vol.59, 133-140, 2016. (Keyword) 京阪神都市圏 / 都市鉄道ネットワーク / 路線検索ソフト / 旅客流動変化 / 経路所要時間 (Tokushima University Institutional Repository) ● Metadata: 118590 (Tokushima University Institutional Repository: 118590)
21.	Masashi Okushima : Multi-agent Simulation for Promoting Clean Energy Vehicles from the Perspective of Concern for the Environment and Local Interactions, Asian Transport Studies, Vol.4, No.1, 96-113, 2016. (Keyword) Local interaction / Social conformity / Small-world network / Vehicle choice (Tokushima University Institutional Repository) ● Metadata: 118582 (Link to Publication Site) ● Publication site (DOI): 10.11175/eastsats.4.96 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.11175/eastsats.4.96 (Tokushima University Institutional Repository: 118582, DOI: 10.11175/eastsats.4.96)
22.	HORI Hiroki and Masashi Okushima : Impact Analysis of Toll Policy for Expressway to Variable Traffic Demand for Local City with Integrated User Equilibrium Assignment Model, Journal of the Eastern Asia Society for Transportation Studies, Vol.11, 580-594, 2015. (Summary) The reconfigure of expressway toll system is discussed from the view of economic effect to the local area recently. It is the purpose of the present study that the impact to the traffic demand and the traffic flow in the local city are estimated quantitatively for the proper evaluation of the toll policy. Therefore, the integrated user equilibrium assignment model is proposed for impact analysis of toll policy on expressway to local city. The demand function between the objective area and the outside area estimated considering with base site. The demand functions are integrated to the user equilibrium assignment model with variable demand. Finally, the traffic demand for the typical toll policies can be estimated and the impact to the traffic flow in the objective area can be analyzed with the proposed model. (Keyword) expressway toll / user equilibrium assignment / travel demand function / local city (Link to Publication Site) ● Publication site (DOI): 10.11175/easts.11.580 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.11175/easts.11.580 (DOI: 10.11175/easts.11.580)
23.	Masashi Okushima : Simulating social influences on sustainable mobility shifts for heterogeneous agents, Transportation, Vol.42, No.5, 827-855, 2015. (Keyword) Local interaction / Mode choice / Hierarchical Bayesian modeling / Multiagent-agent simulation / Pricing policy (Link to Publication Site) ● Publication site (DOI): 10.1007/s11116-015-9649-3 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-84942502637 (DOI: 10.1007/s11116-015-9649-3, Elsevier: Scopus)
24.	Akiyama Takamasa, Inokuchi Hiroaki and Masashi Okushima : The Urban Expressway Toll Policy Corresponding to Long Term Traffic Demand, The Japanese Journal of Transportation Economics, Vol.58, 89-96, 2015. (Summary) 本研究では，都市道路網の建設費償還を基本とする対距離料金設定に関して，長期的な都市交通需要を考慮して，自律的な交通調整機能を踏まえた弾力的な都市高速道路料金の運用方法を検討する．すなわち，長期的交通需要の経年的時間的変化に着目して，都市高速道路償還計画を定式化する．今後都市高速道路では，老朽化の進行に伴い維持管理費用の増加が想定される．したがって，長期的視点から建設費に加えて維持管理費用を考慮した償還計画が重要となる．ここでは，都市高速道路と一般道路で構成される都市道路網に対して，長期的需要変化を考慮した交通量配分によるモデル分析を実行する．これらの分析結果より，長期的交通需要変化に対応した都市高速道路料金政策を，都市交通需要の調整機能をもち，料金収入による償還可能性を確保する方策として整理することができる． (Keyword) 対距離料金 / 都市高速道路 / 利用者均衡配分 / 長期的交通需要変化 / 維持管理費用 (Link to Publication Site) ● Publication site (DOI): 10.32238/koutsugakkai.58.0_89 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390564238092265216 ● Search Scopus @ Elsevier (DOI): 10.32238/koutsugakkai.58.0_89 (DOI: 10.32238/koutsugakkai.58.0_89, CiNii: 1390564238092265216)
25.	Masashi Okushima and Hori Hiroki : IMPACT ANALYSIS OF TOLL POLICY FOR EXPRESSWAY TO LOCAL CITY CONSIDERING WITH VARIABLE TRAFFIC DEMAND, Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management), Vol.70, No.5, I_549-I_558, 2014. (Keyword) expressway toll / user equilibrium / travel demand function / traffic assignment (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001205356609024 (CiNii: 1390001205356609024)
26.	Masashi Okushima and Ishii Ayaka : SIMULATION FOR PROMOTION PLANNING OF CLEAN ENERGY VEHICLE CONSIDERING WITH SOCIAL INTERACTION, Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management), Vol.70, No.5, I_521-I_534, 2014. (Summary) The global warming problem by greenhouse gas emission has become more serious. Also in the transportation section, clean energy vehicles such as EV or PHV should be promoted as well as the modal shift, since CEV can be moved with the low load to the global environment. However, it is pointed out that the social interaction affects the promotion of CEV. Therefore, the multi agent simulation system for promotion planning of CEV is developed with local interaction process as social conformity in the present study. Intention of holding CEV is described with the database of the questionnaire survey about purchasing Eco-vehicles. On the other hand, the social network of the artificial society is described as the small world network model. According to some scenario, the promotion processes of CEV in the artificial society are observed with the proposed MAS system. Finally, it can be concluded that the proposed multi agent simulation with local interaction is useful for promotion planning of CEV. (Keyword) multi agent simulation / local interaction / social conformity / small world network (Link to Publication Site) ● Publication site (DOI): 10.2208/jscejipm.70.i_521 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001205356457728 ● Search Scopus @ Elsevier (DOI): 10.2208/jscejipm.70.i_521 (DOI: 10.2208/jscejipm.70.i_521, CiNii: 1390001205356457728)
27.	Takanori Fukuda and Masashi Okushima : TRAFFIC SIMULATION FOR EVACUATION PLANNING AT THE OUTBREAK OF TSUNAMI IN LOCAL CITY, Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management), Vol.D3-70, No.5, I_85-I_92, 2014. (Summary) It is reported that many residents in the local coastal plain area used a private vehicle to evacuate from the tsunami at the earthquake disaster on the east of Japan. Therefore it caused serious traffic congestion and the number of victims by tsunami had increased. In this study, the traffic demand of vehicle for evacuation is estimated at every 5 minute for the day in the target area with the database of the person trip survey. On the other hand, the traffic demand of commercial vehicle for evacuation is estimated with the database of the road traffic census survey. As the result of these estimations, the maximum of the evacuation demand by vehicle can be found in the target area. Moreover, the traffic congestion on the road network of the target area is estimated with the traffic simulator with the maximum evacuation demand by vehicle. The limited number of vehicles for evacuation according to the residential block can be calculated based on the traffic capacity of bottleneck of network. Finally, it can be concluded that the traffic demand by vehicles for evacuation should be restricted appropriately. (Keyword) tsunami evacuation / traffic demand estimation / traffic simulation / coastal plain area (Link to Publication Site) ● Publication site (DOI): 10.2208/jscejipm.70.i_85 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001205356792192 ● Search Scopus @ Elsevier (DOI): 10.2208/jscejipm.70.i_85 (DOI: 10.2208/jscejipm.70.i_85, CiNii: 1390001205356792192)
28.	Yasunori Kozuki, 中岡禎雄, Takashi Nakanishi, 森本登志也, Sayaka Mori, Ryoichi Yamanaka and Masashi Okushima : EVALUATION OF A LAND-SEA NUTRIENT CYCLE PROJECT ALONG THE AMAGASAKI PORT, OSAKA BAY, Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering), Vol.70, 1098-1103, 2014. (Link to Publication Site) ● Publication site (DOI): 10.2208/jscejoe.70.I_1098 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.2208/jscejoe.70.I_1098 (DOI: 10.2208/jscejoe.70.I_1098)
29.	Akiyama Takamasa, Inokuchi Hiroaki and Masashi Okushima : The Distance based Toll Determination of Urban Expressway for Traffic Demand Adjustment, The Japanese Journal of Transportation Economics, Vol.57, 97-104, 2014.
30.	Ohnishi Hiroki and Masashi Okushima : Analysis for Commuting Time Decision of Car User in Local Area, Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management), Vol.D3-69, No.5, I_489-I_496, 2013. (Summary) In general, traffic congestion in local area is observed only at peak hour. Therefore, it is significant to estimate the effects of transport policy for temporal dispersion of traffic at peak hour in local area. The present paper is aimed at identification of factor for decision-making of departure time on commuting by car in local area. In the present study, commuting time of car user in local area is analized with the database of the person trip survey in the Tokushima city area. The distribution of commuting time for commuter with the fixed starting time for work and commuter of the flextime system is analized. In particular, the commuting time decision model of car user in the local area is described with survival time analysis. As the result, it is not easy to acquire sufficient compatibility in the model with specific probability distribution. On the other hand, it is suggested that the semi-nonparametric model is suitable for description of commuting time of car user in local area. (Keyword) survival analysis / commuting by car / flextime system / safe period (Link to Publication Site) ● Publication site (DOI): 10.2208/jscejipm.69.I_489 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001205354884736 ● Search Scopus @ Elsevier (DOI): 10.2208/jscejipm.69.I_489 (DOI: 10.2208/jscejipm.69.I_489, CiNii: 1390001205354884736)
31.	Mieko Masaka, Kenji Katoh, Akio Kondo and Masashi Okushima : The Health and Environment Facilitation Effect with Health Mobility Management in the Local City, Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management), Vol.D3-69, No.5, I_57-I_65, 2013. (Summary) The commuting social experiment for mobility management in the local city is conducted using the promotion of the health consciousness in the present study. As the result, it can be found that the frequency of healthful commuting is different whether the subject has commuted by a bicycle or on foot before the experiment. In consideration of the difference, the effect for the environment and the health are estimated. The estimated results shows that the CO2 discharge decrease between 43-70% and the risk for Hypertension and Type 2 diabetes decrease 10-19% on the social experiment. Therefore, the mobility management considering with the health consciousness in local city is expected to product some effects in both sides of environment and the health. On the other hand, increase in frequency of the commuting by a bicycle or on foot is required. Therefore, the effects of the measures such as change of the work time are analyzed. (Keyword) the warming of the earth / mobility management / health policy / habitual action (Link to Publication Site) ● Publication site (DOI): 10.2208/jscejipm.69.I_57 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001205354917248 ● Search Scopus @ Elsevier (DOI): 10.2208/jscejipm.69.I_57 (DOI: 10.2208/jscejipm.69.I_57, CiNii: 1390001205354917248)
32.	shunsuke Ohashi, Akio Kondo, Masashi Okushima, Kojiro WATANABE and Akiko Kondo : Improvement of Parks to Contribute to Increase in Physical Activity Based on Suevey of Awareness and Behaviour, Journal of the City Planning Institute of Japan, Vol.48, No.3, 591-596, 2013. (Link to Publication Site) ● Publication site (DOI): 10.11361/journalcpij.48.591 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001204214801280 ● Search Scopus @ Elsevier (DOI): 10.11361/journalcpij.48.591 (DOI: 10.11361/journalcpij.48.591, CiNii: 1390001204214801280)
33.	Abdullah SAIFIZUL Ahmad, KARIM Rehan Mohamed, Hideo Yamanaka and Masashi Okushima : Empirical Analysis on the Effect of Gross Vehicle Weight and Vehicle Size on Speed in Car Following Situation, Asian Transport Studies, Vol.2, No.4, 351-362, 2013. (Summary) This study explores empirically how the gross vehicle weight (GVW) of a following vehicle and the size of leading vehicle will affect the driver behavior in controlling their speed under different compositions of leader-follower pairs in a car-following situation. A large sample of traffic and vehicular data for various vehicle types were obtained continuously using a weigh-in-motion (WIM) based transport data collection system installed at Federal Route 54 in Malaysia. Then, statistical analysis was applied to explore the driver behavior in controlling the speed in a car-following situation from two different perspectives: driver's visual input and vehicle dynamics capability. The main finding of this study is that when we incorporate the vehicle dynamic's capability in a car-following situation, the GVW of the following vehicle and the size of the leading vehicle were significant sources of variation in the following vehicle's speed and relative speed, and their interaction influences the driver behavior in controlling the speed. (Keyword) Weigh-in-motion (WIM) / Gross Vehicle Weight (GVW) / Car-following / Speed Analysis (Link to Publication Site) ● Publication site (DOI): 10.11175/eastsats.2.351 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001205365479552 ● Search Scopus @ Elsevier (DOI): 10.11175/eastsats.2.351 (DOI: 10.11175/eastsats.2.351, CiNii: 1390001205365479552)
34.	Madhu Errampalli, Masashi Okushima and Takamasa Akiyama : Development of the Microscopic Traffic Simulation Model with the Fuzzy Logic technique, Simulation, Vol.89, No.1, 87-101, 2013. (Keyword) microscopic traffic simulation / fuzzy logic / road network / exclusive and priority bus lane (Link to Publication Site) ● Publication site (DOI): 10.1177/0037549712443716 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-84872299176 (DOI: 10.1177/0037549712443716, Elsevier: Scopus)
35.	Masashi Okushima and Takamasa Akiyama : Impact Analysis of Eco-Commuting Promotion Plan with Multi Agent Simulation, Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management), Vol.D3-68, No.5, I_625-I_634, 2012. (Summary) The global warming problem by greenhouse gas emission has become more serious. Also in the transportation section, construction of the sustainable transportation system in environment has been an important subject. Not only improvement of service level of modes except private vehicle, but also consciousness for environmental problem of individual trip maker is important for eco-commuting promotion. Eco-consciousness would be changed by influence of other person. The multi agent simulation system for planning of eco-commuting promotion is developed with social interaction model for eco consciousness in the study. Modal shift is modeled by considering the result of a transport social experiment for ecocommuting as reference. Influence of promotion plan such as improvement of service level of public transport, promotion of individual eco consciousness and strengthening interaction of individuals can be analyzed with the proposed model. Finally, it can be concluded that the proposed multi agent simulation with social interaction for eco-consciousness is useful for planning of eco-commuting promotion. (Keyword) multi agent simulation / social interaction / environmental consciousness / transport modal shift / greenhouse gas emission reduction (Link to Publication Site) ● Publication site (DOI): 10.2208/jscejipm.68.I_625 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282680333899136 ● Search Scopus @ Elsevier (DOI): 10.2208/jscejipm.68.I_625 (DOI: 10.2208/jscejipm.68.I_625, CiNii: 1390282680333899136)
36.	Hiroki Hori and Masashi Okushima : Application of Integrated Traffic Equilibrium Assignment Model for Impact Analysis of Expressway Toll Policy to Local City Area, Journal of Structural Mechanics and Eartquake Engineering, Vol.D3-68, No.5, I_1087-I_1094, 2012. (Keyword) expressway toll / user equilibrium assignment / travel demand function / travel mode choice (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520853832711010688 (CiNii: 1520853832711010688)
37.	Youhei Imai, Masashi Okushima and Akio Kondo : Structural Analysis of Environmental Consciousness with Social Interaction Related to Modal Shift of Commuting Trip, Journal of Structural Mechanics and Eartquake Engineering, Vol.D3-68, No.5, I_607-I_614, 2012. (Keyword) travel mode choice / environmental consciousness / RP/SP data / structural equation modeling
38.	Mieko Masaka, Kenji Katoh, Akio Kondo and Masashi Okushima : Transport Policy toward Low-Carbon Society Focusing on Health Aspect in Provincial City, Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management), Vol.D3-68, No.4, I_400-I_411, 2012. (Keyword) the warming of the earth / mobility management / health policy / structural equation model (Link to Publication Site) ● Publication site (DOI): 10.2208/jscejipm.68.400 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.2208/jscejipm.68.400 (DOI: 10.2208/jscejipm.68.400)
39.	Qingyue Kong, Akio Kondo, Masashi Okushima, Kojiro WATANABE and Akiko Kondo : Proposal of Policies for Promoting Physical Activity for Access to Living Environment Facilities and their Effects, Journal of the City Planning Institute of Japan, Vol.47, No.3, 781-786, 2012. (Summary) Many studies show that regular moderate physical activity such as walking and cycling is beneficial for health promotion. The aim of this study is to propose policies promoting physical activity and measure their effects. Focusing on the transport behavior access to living environment facilities, two policies are considered. One is supplying well-paved road for walking and cycling, another is providing information about the relationship between physical activity and health. First, we estimate the health awareness of residents by a questionnaire survey carried out in Tokuhsima urban areas and find out that about 30% of residents are considered health is important in their behavior. And then, the quantity of physical activity is calculated. The quantity of physical activity under policies is found to be 1.5~7.2Ex per week more than that without policies. (Keyword) Physical activity / Living environment facilities / Policy / Bearable distance / Transport behavior (Link to Publication Site) ● Publication site (DOI): 10.11361/journalcpij.47.781 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282679189738880 ● Search Scopus @ Elsevier (DOI): 10.11361/journalcpij.47.781 (DOI: 10.11361/journalcpij.47.781, CiNii: 1390282679189738880)
40.	Masashi Okushima, Takamasa Akiyama and Madhu Errampalli : Microscopic Fuzzy Urban Traffic Simulation with Variable Demand, Journal of Civil Engineering and Architecture, Vol.6, No.5, 541-556, 2012. (Link to Publication Site) ● Publication site (DOI): 10.17265/1934-7359/2012.05.003 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.17265/1934-7359/2012.05.003 (DOI: 10.17265/1934-7359/2012.05.003)
41.	Akiyama Takamasa, Masashi Okushima and Inokuchi Hiroaki : The Empirical Analysis of Sustinable Public Transport Planning for Local City, The Japanese Journal of Transportation Economics, Vol.55, 223-232, 2012. (Keyword) community bus / decision tree (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520290883343863808 (CiNii: 1520290883343863808)
42.	Takamasa Akiyama, Hiroaki Inokuchi and Masashi Okushima : The Installation of Toll System on Urban Expressway Considering Diversion Traffic, Journal of Structural Mechanics and Eartquake Engineering, Vol.D3-67, No.5, I_1225-I_1232, 2011. (Keyword) diversion traffic / distance based pricing system / electric toll collection system / traffic assignment / benefit of travel time reduction
43.	Mieko Masaka, Kenji Katoh, Akio Kondo and Masashi Okushima : An Energy Expenditure Estimation Method of Travel Behavior for Behavior Modification Focusing on Health Aspect, Journal of Structural Mechanics and Eartquake Engineering, Vol.D3-67, No.5, I_635-I_642, 2011. (Keyword) the warming of the earth / transport policy / information data processing
44.	Okaue Masashi and Masashi Okushima : Real Time Traffic Simulation Model for Traffic Control with Accident on Urban Expressway, Journal of Structural Mechanics and Eartquake Engineering, Vol.D3-67, No.5, I_1071-I_1078, 2011. (Keyword) traffic flow simulator / urban expressway / traffic control / traffic accident
45.	Takagi Masaya, Masashi Okushima and Akio Kondo : Analysis of Behavior-Intention Consistency in the Social Experiment with Discount of Bus Toll in the Local City, Journal of the City Planning Institute of Japan, Vol.46, No.3, 775-780, 2011. (Summary) Application of the behavior intention method is proposed to the bus transport demand estimation of a local city. However, a social experiment and the research in the object area are necessary to secure the reliability of the estimation results. In the present study, the behavior-intention consistency in the social experiment with discount of bus toll in local city is analyzed. Therefore, a prior intention for bus use and an actual travel behavior at the social experiment of the same sample is measured by the web questionnaire system. The observed behavior-intention consistency is compared with the reference value. The discriminant model for behavior-intention consistency is constructed and the behavior-intention consistency is calculated. It can be concluded that the behavior-intention consistency of a daily bus user in the transport society experiment is higher than the reference value. (Keyword) promotion of bus system / behavior intention method / intention survey / social experiment with bus / バス利用促進 / 行動意図法 / 意識調査 / 交通社会実験 (Link to Publication Site) ● Publication site (DOI): 10.11361/journalcpij.46.775 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001204211485184 ● Search Scopus @ Elsevier (DOI): 10.11361/journalcpij.46.775 (DOI: 10.11361/journalcpij.46.775, CiNii: 1390001204211485184)
46.	孔慶玥, Akio Kondo, Masashi Okushima and Akiko Kondo : Evaluation Model for Living Environment Facilities Considering Bearable Distance and its Application, Journal of the City Planning Institute of Japan, Vol.46, No.3, 787-792, 2011. (Summary) The purpose of this study is to construct a evaluation model for living environment facility considering the bearable distance of movement. First, we define the bearable distance as that residents do not feel burden when they access to the facilities, and estimate this distance based on data gathered by a questionnaire survey. Second, we construct the evaluation model for living environment facilities using the bearable distance and movement distance to the facilities. Then, a case study of Tokushima urban areas is carried out. As a result, the evalution value tends to be lower according to increase in age in medical, shopping and official facilities. In the central city area, the evaluation value is slightly low in medical facilities. As a reference distance when building a compact city, 80% of the residents do not feel burden to move in 1,000m. (Keyword) bearable distance / living environment facilities / evaluation / model / traffic behavior / 限界距離 (Link to Publication Site) ● Publication site (DOI): 10.11361/journalcpij.46.787 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282679188180864 ● Search Scopus @ Elsevier (DOI): 10.11361/journalcpij.46.787 (DOI: 10.11361/journalcpij.46.787, CiNii: 1390282679188180864)
47.	Hiroki Hori and Masashi Okushima : Infulence Analysis Method of Traffic Flow in the Local City by Toll Policy of Expressway, 交通工学研究発表会論文集, Vol.31, 291-294, 2011. (Keyword) toll policy / traffic assingment / traffic demand / travel mode choice
48.	Masashi Okushima and Takamasa Akiyama : Multi-Agent Transport Simulation Model for Eco-Commuting Promotion Planning, Journal of Advanced Computational Intelligence and Intelligent Informatics, Vol.15, No.7, 911-918, 2011. (Summary) The global warming problem due to greenhouse gas emission has become very serious. Moreover, in thetransportation section, the construction of a sustainable transportation system in the environment has been an important subject. Not only improvement of service level of modes, except those of private vehicles, but also consciousness for the environmental problem of an individual trip maker is important for eco-commuting promotion. Eco-consciousness can be changed under the influence of other people. The multi-agent simulation system for planning of ecocommuting promotion is developed using a social interaction model for eco-consciousness in this study. Modal shift is modeled by considering the result of a transport social experiment for eco-commuting promotion as reference. Influence of the promotion plansuch as improvement of service level of public transport, promotion of individual eco-consciousness, and strengthening the interaction of individuals can be analyzed using the proposed model. Finally, it is concluded that the proposed multi-agent simulation with social interaction for eco-consciousness is useful for the planning of eco-commuting promotion. (Keyword) multi agent simulation / eco consciousness / local interaction / modal shift / greenhouse gas emission (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-80052971802 (Elsevier: Scopus)
49.	Masashi Okushima and Akiyama Takamasa : Applicability of Fuzzy Inflow Control for Urban Expressway with Knowledge Acquisition, Journal of Japan Society for Fuzzy Theory and Intelligent Informatics, Vol.23, No.4, 117-126, 2011. (Summary) Advanced traffic controller for urban expressway would be recommended corresponding to the recent progress of information technologies as well as soft-computing. On the other hand, it has summarized as significant results of researches that the essential traffic control for urban expressway can be discussed based on the fuzzy control formulations. The flexible and robust traffic controller can be created with the formulation of fuzzy logic. The optimization of parameters for efficient traffic controller can be performed by genetic algorithm as well. The fuzzy traffic controller is evaluated through the estimation of practical condition with a traffic accident by the traffic simulation for urban expressway in the study. The rules for the fuzzy control can be updated with the knowledge about traffic control for accident, as the structure of fuzzy control is flexible. The fuzzy controller for traffic accident condition is applied and evaluated with the traffic simulation. The advanced inflow controller provides the efficient traffic on the urban expressway even with the complexity even in the real world. Finally, it would be confirmed that the fuzzy control with knowledge acquisition is effective as traffic control for urban expressway. (Keyword) fuzzy reasoning / genetic algorithm / control / simulation / transportation engineering (Link to Publication Site) ● Publication site (DOI): 10.3156/jsoft.23.491 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282680162016384 ● Search Scopus @ Elsevier (DOI): 10.3156/jsoft.23.491 (DOI: 10.3156/jsoft.23.491, CiNii: 1390282680162016384)
50.	Akiyama Takamasa, Masashi Okushima and Inokuchi Hiroaki : Evaluation of Urban Development Policy for Local City with Artificial Society Model, Journal of Japan Society for Fuzzy Theory and Intelligent Informatics, Vol.23, No.4, 54-63, 2011. (Summary) It should be an issue that the central area in local city declines commercially because of the extension of city area. Therefore, the urban development policy is proposed to activate the central area of the city. The urban development policy is not often discussed on the basis of numerical value of evaluation in the real world. The ordinary aggregate model cannot describe propalg the complex interaction between urban activities. The complex system modeling approach is introduced in the study. The artificial society model is created with citizen agents and commercial retailers. In particular, the decision of citizen agents for shopping and leisure activity place and travel mode can be formulated by fuzzy reasoning. On the other hand, the commercial attraction degree can be influenced by the commercial sales and number of visitors. The decrease of activities in the central area without urban development policy can be observed in the artificial society. On the contrary, the developments for several different activities in the central area can be found with introduction of fundamental urban development policies. Furthermore, it is realized that the comprehensive urban development policy with combination of policies should be superior to the single policy introduction. Finally, it is concluded that self-organized development process of local city can be realized from the accumulated activities of individual urban citizens with referring to the observation in the artificial society model to evaluate urban development policy. (Keyword) fuzzy reasoning / artificial society / multi-agent systems / urban development (Link to Publication Site) ● Publication site (DOI): 10.3156/jsoft.23.428 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001205185238528 ● Search Scopus @ Elsevier (DOI): 10.3156/jsoft.23.428 (DOI: 10.3156/jsoft.23.428, CiNii: 1390001205185238528)
51.	Takamasa Akiyama, Hiroaki Inokuchi and Masashi Okushima : Application of Zonal Distance based Toll System to Urban Expressway, The Japanese Journal of Transportation Economics, Vol.54, 245-254, 2011. (Keyword) Variable Demand / Traffic Assignment (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520853832061956864 (CiNii: 1520853832061956864)
52.	高木昌也, Masashi Okushima and Akio Kondo : 地方都市のバス利用促進のための行動意図法による潜在需要分析, Journal of the City Planning Institute of Japan, Vol.45, No.3, 439-444, 2010. (Keyword) promotion of bus system / behavior intention method / potential demand analysis / intention survey (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001204213699840 (CiNii: 1390001204213699840)
53.	孔慶玥, Akio Kondo and Masashi Okushima : PT調査データを用いた交通行動による身体活動量に関する研究, Journal of the City Planning Institute of Japan, Vol.45, No.3, 151-156, 2010. (Keyword) physical activity / walking / cycling / bus use / environment feature (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001204213810176 (CiNii: 1390001204213810176)
54.	Masashi Okaue and Masashi Okushima : Traffic Simulation Model for Traffic Control with Accident on Simple Way of Urban Expressway, 交通工学研究発表会論文集, Vol.30, 13-16, 2010. (Keyword) traffic flow / traffic simulation / expressway
55.	Hiroaki Inokuchi, Takamasa Akiyama and Masashi Okushima : Evaluation of Environmental Improvement Policy on Urban Network Considering Hybrid Vehicle, The Japanese Journal of Transportation Economics, Vol.53, 35-44, 2010. (Keyword) environment assessment / hybrid vehicle / traffic simulation / carbon dioxide emission / urban road netwrok (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520290882556543104 (CiNii: 1520290882556543104)
56.	Takamasa AKIYAMA, Masashi Okushima and Yukiko OZAWA : Destination Choice Model with Fuzzy Classifier System for Transport Planning, Journal of Japan Society for Fuzzy Theory and Intelligent Informatics, Vol.22, No.1, 110-120, 2010. (Summary) The travel behaviour approach is developed to analyze the urban traffic flow in terms of individual travel behaviour for urban transport planning. In the study, destination choice modelling is particularly discussed for the description of individual travel behaviours. The development of proper destination choice model for multi-stage traffic analysis is rather important in terms of spatial trip structure for travel behaviour analysis. The structure of destination choice model with fuzzy classifier systems is discussed and the empirical results are shown. The fundamental formulation of fuzzy classifier system is mentioned and the parameters of membership functions are determined with empirical data. The fitness for destination of travel behaviours is discussed to compare the proposed destination choice model to the existing model. As a result, it is confirmed that the accuracy of estimation for the destination of trip makers can be improved with introduction of the model based on learning process in fuzzy classifier system. Furthermore, it is known as well that the travel behaviour model installing the proposed destination choice process provides the improved estimation of realistic travel patterns. According to the previous results of analysis, it can be concluded that the destination choice model proposed here should have several advantages in travel behaviour analysis to construct the travel behaviour model with high accuracy. (Keyword) travel behaviour model / fuzzy classifier system / destination choice (Link to Publication Site) ● Publication site (DOI): 10.3156/jsoft.22.110 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001205187187072 ● Search Scopus @ Elsevier (DOI): 10.3156/jsoft.22.110 (DOI: 10.3156/jsoft.22.110, CiNii: 1390001205187187072)
57.	Masashi Okushima and Takamasa Akiyama : Knowled Based Vehicle Navigation System for Traffic Accident on Urban Network, 交通工学研究発表会論文集, Vol.29, 313-316, 2009. (Keyword) traffic information provision / traffic accident / urban network
58.	Takamasa AKIYAMA and Masashi Okushima : Quantitative Assessment of Urban Renewal Policy by System Thinking Model, Infrastructire Planning Review, Vol.26, No.1, 287-296, 2009. (Keyword) development of central area / urban renewal policy / system thinking
59.	Masashi Okushima, Takamasa AKIYAMA and Madhu ERRAMPALLI : Fuzzy Logic Based Microscopic Traffic Simulation for Urban Transport Policy Evaluation, Infrastructire Planning Review, Vol.26, No.5, 923-932, 2009. (Keyword) rrban transport policy / fuzzy theory / Microscopic Traffic Simulation
60.	Takamasa Akiyama and Masashi Okushima : Analysis of Railway User Travel Behaviour Patterns of Different Age Groups, IATSS Research, Vol.33, No.1, 6-17, 2009. (Summary) In recent years, there have been requirments for a transport environment that will foster the development of safe, comfortable townships. The study of urban activities amid an aging society and effective use of public transport modes in addressing environmental problems have become particularly important issues. This study analyzes travel behaviour patterns of varying age groups using urban railways in order to examine the relationship between urban public transport use and urban activities. Specifically, it analyzes the composition of urban activity and travel behaviour patterns among urban railway users in the Keihanshin (Kyoto-Osaka-Kobe) metropolitan area. This paper looks at urban activities within aging societies and identifies the differences in travel behaviour of railway users by separating them into young, middle aged and senior citizen age groups. Analysis makes particular use of the Railway Station Database, which is a compilation of existing studies into attributes of railway stations and their surroundings, and results of person trip surveys. Rail use behaviour characteristics have been sorted by age group because mobility via urban railway systems is varied by age group. As a result, differences in railway usage patterns (travel objectives, distance and time, and number of transfers, etc.) have been identified and so too have differences in urban activity patterns related to free activities (shopping, recreation). Furthermore, the study developed a travel behaviour pattern estimation model which is capable of categorizing specific transport behaviour patterns and estimating rail users and transport behaviour patterns from the relationship with areas surrounding railway stations to ensure future mobility by public transport for older age groups. The results make it possible to put forward proposals for urban rail services that will facilitate urban activities for the different age groups. Eventually, it will be possible to understand the effect of rail transport as public transport mobility on urban activities of different age groups. (Keyword) Aging society with a falling birthrate (Link to Publication Site) ● Publication site (DOI): 10.1016/S0386-1112(14)60232-6 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.1016/S0386-1112(14)60232-6 (DOI: 10.1016/S0386-1112(14)60232-6)
61.	Masashi Okushima, Takamasa Akiyama and Ryuichi Kitamura : The analysis of the railway station and town management with a focus on travel behaviour of the elderly, Annual Report on Transportation Economics 2008, Vol.Vol.52, 71-80, 2009. (Summary) The current state of barrier-free transport services in the railway station and transport demand of the railway in the elderly is analyzed empirically. Improvement of demand for railway with promotion of barrier-free transport services in the railway station is estimated. The estimation model is constructed with a database of railway stations and surrounding facilities. On the other hand, the travel behaviour of the elderly is analyzed empirically. The characteristics in trip patterns of the elderly are summarized from the perspective of the railway station and town management. Finally, the impacts of urban activity of the elderly with the railways are analyzed for town management in the area around the railway station. (Keyword) 交通バリアフリー / 交通行動分析 / 高齢者交通 / まちづくり / 鉄道駅データベース (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520853834153285632 (CiNii: 1520853834153285632)
62.	Masashi Okushima and 秋山孝正 : ニューロ的ファジィモデルによる交差点の交通安全度評価, --- - ---, Journal of Japan Society for Fuzzy Theory and Intelligent Informatics, Vol.20, No.6, 934-943, 2008. (Summary) 都市道路網において有効な交通安全対策を実施するためには，交差点の交通安全性の評価が極めて重要である．特に都市道路網では交通流動変化や交通安全対策の実施など時間的・空間的な複雑な条件変化から交通事故多発交差点が特定される．さらに交通事故の詳細原因解明には経験的専門的知識が必要となる．このため本研究では，経年的な条件変化と交差点条件に基づく交差点安全性の推移をニューロ的ファジィモデルにより知識ベース化する．一方で交通安全対策の経年的効果の低下など安全性評価指標の内包する設定値を実証的に決定する必要がある．このためニューロ的ファジィモデル規定のための設定値をGAにより最適化する2重構造の推定手順を提案する．本モデルの構築により，時間的空間的な変化を踏まえて，高精度な交差点群の交通事故推計が可能となる．最終的に交通事故頻度と経済的損失を踏まえた妥当な交通安全対策立案のために有益な資料が提供される． (Keyword) ニューロ的ファジィ / 交通事故推計 / 知識ベース / 遺伝的アルゴリズム / Fuzzy Neuro / Traffic Accident Estimation / Knowledge Base / Genetic Algorithm (Link to Publication Site) ● Publication site (DOI): 10.3156/jsoft.20.934 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282680162841088 ● Search Scopus @ Elsevier (DOI): 10.3156/jsoft.20.934 (DOI: 10.3156/jsoft.20.934, CiNii: 1390282680162841088)
63.	Masashi Okushima and Takamasa Akiyama : Basic Analysis of Hourly Charging on Distance Based Toll System, 交通工学研究発表会論文集, Vol.28, No.1, 253-256, 2008. (Summary) 都市高速道路公団の民営化とETC(料金自動徴収システム)の導入を踏まえて，都市高速道路の料金制度の検討が進んでいる．すなわち都市高速道路に対して，従来の「均一料金制」から，「対距離料金制」の導入が検討されている．また，ETCの料金徴収技術の自動化は，交通需要に対応した弾力的料金の設定を容易とするため，対距離料金制度における社会的便益の向上を期待することができる．本研究では，対距離料金の弾力的運用として「時間帯別対距離料金」に関する交通均衡分析を行い，社会的有効性を検討する．このため，時間帯別対距離料金設定に対応した時間帯別交通均衡モデルを構築する．これより，「時間帯別対距離料金」の社会的効率性に関する評価を可能とする． (Keyword) user equilibrium / traffic assingment / distance based toll / hourly charging / urban expressway
64.	Guo Min, Masashi Okushima and Takamasa Akiyama : The Geographical Travel Behaviour Analysis with Regional Trip Survey Data for Disaster Damage Estimation, Infrastructire Planning Review, Vol.25, No.3, 647-654, 2008. (Summary) The essential database is accumulated several times in the person trip survey for transport planning. In the study, the PT survey result is applied effectively for considering the damage reduction of disaster with estimation of sufferers in earthquake. The geographical data is combined to the PT database to specify the activity locations. The algorithm to capture the microscopic trip patterns is developed supported by basic function of GIS. The spatial distribution of sufferers in earthquake as a disaster can be estimated empirically. As a result, the suffering condition connecting to the urban activities in earthquake is summarized statistically. Furthermore, important problems are pointed out and future analytical requirements are summarized in terms of the damage reduction in as disaster reflecting to the urban activity with the motorization.
65.	秋山孝正 and Masashi Okushima : 人工社会型都市モデルを用いたまちづくり政策の検討, --- - ---, Infrastructire Planning Review, Vol.25, No.3, 709-716, 2008. (Summary) 多くの地方都市において，中心市街地活性化を目指したまちづくり政策が提案されている．本研究では，交通行動と商業活動を中心に人工社会型の都市モデルを構成し，まちづくり政策の波及過程を分析する．市民と商業店舗を自律的なエージェントとし，都市圏の時系列的変化を記述する人工社会を構成する．特にモータリゼーションの進展する仮想的都市圏に対して，コンパクトシティの理念を踏まえた都心居住・公共交通促進のまちづくり政策を導入する．この結果，局所的な政策インパクトが大域的に波及する過程が記述できた．これより都市活動の複雑な相互作用を考慮した政策評価が可能となり，自律的なまちづくりに対応する創発現象を観測した． (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1571980076384324992 (CiNii: 1571980076384324992)
66.	秋山孝正, Masashi Okushima and 北村隆一 : 都市活動に着目した鉄道駅とまちづくりに関する実証的分析, --- - ---, The Japanese Journal of Transportation Economics, Vol.51, No.-, 99-108, 2008. (Summary) 本研究では，まちづくりと協調した鉄道駅整備に関する基本データベースを利用して，鉄道駅ポテンシャルを規定し，鉄道駅の類型化を行う．一方で都市活動に着目して，鉄道駅周辺地域における人々の動き(交通行動)を類型化する．これらは，鉄道駅整備に関するまちづくりとの現状と実際の都市活動の発生状況を把握することになり，両者の関係性を検討することにより，将来的なまちづくりと協調した鉄道駅整備の方向性を検討することができる． (Keyword) 都市鉄道 / まちづくり / 鉄道駅整備 / 鉄道駅データベース / クラスター分析 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520290883395763968 (CiNii: 1520290883395763968)
67.	Madhu Errampalli, Masashi Okushima and Takamasa Akiyama : Fuzzy Logic based Lane Change Model for Microscopic Traffic Flow Simulation, Journal of Advanced Computational Intelligence and Intelligent Informatics, Vol.12, No.2, 172-181, 2008. (Summary) Lane changing phenomenon is vital in representing individual vehicle behaviour in microscopic traffic simulation, yet many lane change models do not consider the uncertainties and perceptions in human behaviour that are involved in modeling lane changing. In the present study, fuzzy reasoning in lane changing model is introduced to reflect these uncertainties and perceptions to represent lane changing behaviour more realistically. The comparison of simulated results with observed data indicated that fuzzy reasoning represents driver behaviour more realistically than standard modeling. The effectiveness of the proposed technique is demonstrated in a real urban network with bus lane policy. (Link to Publication Site) ● Publication site (DOI): 10.20965/jaciii.2008.p0172 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.20965/jaciii.2008.p0172 (DOI: 10.20965/jaciii.2008.p0172)
68.	Masashi Okushima and 秋山孝正 : 人工社会モデルを用いた地方都市コミュニティバスの交通需要喚起策の検討, --- - ---, Infrastructire Planning Review, Vol.24, No.3, 509-516, 2007. (Summary) 地方都市におけるコミュニティバス利用の問題は，一般的な交通需要構造とは異なるため，内発的な交通需要喚起が必要である．ここでは，コミュニティバス利用をサービス水準向上に加えて，特に交通弱者の多様な特性を前提とした分析手法を検討する．具体的には，地方都市の地域住民をエージェントと考えた，コミュニティバスを含む都市交通に関する人工社会モデルを構成する．このとき岐阜県本巣市におけるコミュニティバス検討に際して実施した実態調査結果に基づき具体的な特性把握を行った．また複雑な意思決定構造は「決定木」を導入してモデル化する．コミュニティバスに関する人工社会を観測することにより，相互作用，ミクロ-マクロ関係から発生する創発現象を参考として，今後のコミュニティバス政策を検討できる．
69.	秋山孝正, Masashi Okushima and 和泉範之 : Multi-Agent Simulation Model for Fuzzy Travel Behaviour Analysis, --- - ---, Infrastructire Planning Review, Vol.24, No.3, 489-498, 2007. (Summary) The essential points of multi-agent simulation can be summarized that the social structure canbe emerged as population behaviour through the interaction of agents in the environment according to the determined rules depending on the acquired information and knowledge of agents. The decision of each agent for day to day travel is formulated in the agent model corresponding to the congestion charging scheme. Each agent should have different preference to the alternatives oftips. On the other hand, traffic flow on urban network should be estimated summarizing the individual behaviours of commuter in the integrated model as previously mentioned. Therefore, the simulator artificial transport society consists of two interactive procedures such as travel behaviour estimation and agent day to day decision. Furthermore, the day to day transport phenomena can be monitored through the display illustration based on GIS software. (Keyword) 交通行動モデル / 複雑系 / マルチエージェント (Link to Publication Site) ● Publication site (DOI): 10.2208/journalip.24.489 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282679614771456 ● Search Scopus @ Elsevier (DOI): 10.2208/journalip.24.489 (DOI: 10.2208/journalip.24.489, CiNii: 1390282679614771456)
70.	秋山孝正, 田中尚人, Masashi Okushima and 中谷紘也 : 関西都市圏における鉄道駅ポテンシャルについての考察, --- - ---, Infrastructire Planning Review, Vol.24, No.3, 207-216, 2007. (Summary) 関西の都市鉄道に関して，鉄道駅とまち(周辺地域)の協調的発展を検討するため，鉄道駅ポテンシャルを定義した．具体的には，国勢調査・PT調査などに基づいて，鉄道駅とまちに関するデータベースを作成した．つぎに，鉄道駅の潜在的な開発可能性を判断する指標を検討するとともに，鉄道駅ポテンシャルの算定方法を提案する．この際に，鉄道事業者の協力を得て，AHP手法などの一対比較法を利用して，鉄道駅ポテンシャル算定システムを示した．つぎに代表的な鉄道駅に関して，鉄道駅ポテンシャル算定結果から，鉄道駅とまちづくりの相乗的な展開方法を議論する．これより関西圏の鉄道駅の潜在的開発力に関する多様な位置づけが明確となった．
71.	秋山孝正 and Masashi Okushima : 交通機関選択分析のためのファジィ決定木手法の比較検討, --- - ---, Journal of Japan Society of Civil Engineers, Ser. D, Vol.63, No.2, 145-157, 2007. (Summary) 本研究では機械学習における決定木を用いて，交通行動の意思決定構造の記述を試みる．具体的には，ID3，C4.5，ファジィID3，ファジィC4.5の4種類の決定木アルゴリズムを用いて交通機関分担モデルを構成する．大量のデータからの知識獲得を前提とするモデル化は従来の方法に比べて，多様な意思決定構造の表現と推計精度向上の点から有効性が示される．また事後的な枝刈を実行して，情報量を整理することによって，多様性を持つ高精度な判別が可能なファジィ決定木を構成できることが示された．最終的にデータの情報量利得を基本とする決定木の交通行動分析への適用可能性が示された． (Link to Publication Site) ● Publication site (DOI): 10.2208/jscejd.63.145 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.2208/jscejd.63.145 (DOI: 10.2208/jscejd.63.145)
72.	Masashi Okushima and 秋山孝正 : 局所的相互作用を考慮した都市交通政策評価のための人工社会モデル, --- - ---, Journal of Japan Society of Civil Engineers, Ser. D, Vol.63, No.2, 134-144, 2007. (Summary) 本研究では，都市交通現象を多様な構成要素に基づく複雑系として取り扱う．特に，都市交通政策導入時の交通行動変化を，自律的な交通行動主体を基本とした人工社会モデルにおいて構成する．いわゆる仮想社会におけるマルチエージェントシミュレーションにより，日常的な交通行動変化を観測する．既存の複雑系研究と同様に交通行動の複雑な様相の具体的な記述を試みる．特に人工社会のエージェントによる局所的変化とシステム全体との相互作用から生じる大局的現象を観測することで，都市交通現象の発生メカニズムを分析する．これより最終的に都市交通現象の複雑系としての解析可能性が整理できる． (Link to Publication Site) ● Publication site (DOI): 10.2208/jscejd.63.134 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.2208/jscejd.63.134 (DOI: 10.2208/jscejd.63.134)
73.	田中尚人, 小島弘子, Masashi Okushima and 秋山孝正 : 都市景観評価システムを用いた地方都市の景観分析, --- - ---, Journal of Japan Society of Civil Engineers, Ser. D, Vol.63, No.2, 122-133, 2007. (Summary) 都市景観評価においては定量的指標を含む体系的な評価方法の導入が重要である．本研究では，都市景観評価のための知識ベースシステムを用いて，地方都市の景観構成に関する実証的な分析を試みる．このため，既存研究で作成した集合住宅を対象とする「都市景観評価システム」を高度化し，体系的な都市景観評価システムを構築する．具体的には，景観評価に関する知識を収集・整理し，都市景観全般を対象とした詳細な都市景観評価結果の提示を可能なシステムとした．これより，地方都市における景観形成に対する有益な知見が整理されるとともに，都市景観評価に関する知識の再構成と実用的利用が容易となった． (Link to Publication Site) ● Publication site (DOI): 10.2208/jscejd.63.122 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.2208/jscejd.63.122 (DOI: 10.2208/jscejd.63.122)
74.	文世一, 秋山孝正 and Masashi Okushima : 道路ネットワークにおける次善の混雑料金-都市高速道路の役割に着目して-, --- - ---, 応用地域学研究, Vol.12, No.-, 15-25, 2007. (Summary) 混雑料金を実際に適用する際には，すべての道路において外部効果に等しい料金を課すという最適(ファーストベスト)政策は実施不可能なので，徴収方法が単純な次善の政策を採用せざるを得ない．本研究では代替的な次善政策として，コードンプライシングと都市高速道路における混雑料金に着目する．そして大阪都市圏を対象として構築された交通ネットワーク均衡モデルを用いたシミュレーションを通じて，これら代替的な料金システムの効果を比較分析する．
75.	秋山孝正 and Masashi Okushima : Fuzzy Modal Choice Modelling for Urban Transport Planning, --- - ---, Journal of Japan Society for Fuzzy Theory and Intelligent Informatics, Vol.19, No.2, 176-188, 2007. (Summary) Application of travel behaviour model is highly desired to describe the daily trip pattern of the trip makers as an important analysis technique in urban transport planning. It is required that the model would describe the decision for purpose, mode, destination, and route for the trip chaining of individual trip makers. In the study, the integrated approach with fuzzy reasoning and ID3 algorithm would be proposed to formulate the decision process to establish the fuzzy modal choice model. The trip patterns can be analyzed significantly corresponding to the trip survey results for urban area. Furthermore, the effectiveness of transport policy can be discussed because the travel behaviour analysis would be carried out with considering human fuzziness. (Keyword) Travel behaviour analysis / mode choice model / Fuzzy reasoning / ID3 algorithm / Trip patterns (Link to Publication Site) ● Publication site (DOI): 10.3156/jsoft.19.176 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.3156/jsoft.19.176 (DOI: 10.3156/jsoft.19.176)
76.	Madhu Errampalli, Masashi Okushima and Takamasa Akiyama : Evaluation of Public Transport Policy by Microscopic Simulation Model, Infrastructire Planning Review, Vol.23, No.4, 945-953, 2006. (Summary) The main objective of this study is to provide a basis to evaluate bus priority policies especially bus lane and public transport priority at signal by developing microscopic traffic simulation model. Fuzzy reasoning has been considered in lane change and route choice behaviour. The lane change model with fuzzy reasoning seems to be estimating the lane changing behaviour more realistically. The results show the superiority of priority bus lane option over the exclusive bus lane option. In case of priority at signal options, curtailing red phase and extending green phase has been drawing more benefits compared to other options considered.
77.	Takamasa Akiyama and Masashi Okushima : Advanced Fuzzy Traffic Controller for Urban Expressway, International Journal of Innovative Computing, Information and Control, Vol.2, No.2, 339-355, 2006. (Summary) The advanced inflow traffic controller would be proposed corresponding to the recent progress of traffic control technologies as well as soft-computing. The flexible and robust traffic controller can be created with the formulation of fuzzy logic. Furthermore, the optimization of parameters for efficient traffic controller can be performed by genetic algorithm (GA) as well. The fuzzy traffic controller is evaluated through the estimation of traffic condition by the traffic simulation for urban expressway. Therefore, it can be summarized from the above results that the recent progress in information technology and soft-computing produce the superior traffic controller for urban expressway with the formulation of fuzzy control.
78.	Takamasa Akiyama and Masashi Okushima : Implementation of Cordon Pricing on Urban Network with Practical Approach, Journal of Advanced Transportation, Vol.42, No.2, 221-248, 2006. (Summary) The road pricing is regarded as a transport policy to realize the efficient use of urban network. The network analysis with variable demand has been often applied to describe the network level of congestion pricing on the urban network. In the study, the cordon pricing system is analyzed to implement in the urban area with practical approach. It is assumed that the congestion tolls are collected in crossing the cordon lines on the network. Therefore, the scale of cordon zones and the values of congestion tolls would be determined simultaneously to produce the maximum social net benefit. The combinatorial optimization with unit price is formulated. The genetic algorithm (GA) is applied as a practical method to provide the solutions for the combinatorial optimization problem. As the pattern of cordon pricing is determined, the performance of system is estimated to confirm the applicability. It is concluded that the cordon pricing can be applied with the practical approach. (Link to Publication Site) ● Publication site (DOI): 10.1002/atr.5670400208 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-33747488922 (DOI: 10.1002/atr.5670400208, Elsevier: Scopus)
79.	Masashi Okushima and 秋山孝正 : 交通均衡分析を用いた都市高速道路の対距離料金制度の検討, --- - ---, The Japanese Journal of Transportation Economics, Vol.49, No.-, 81-90, 2006. (Summary) 対距離料金制度として，数種類の料金設定方法を提案する．具体的には直線的変化する距離比例料金から連続的変化する関数型料金まで段階的に具体的な料金設定方法に関する検討を行う．これらの対距離料金制度の料金設定について，社会的な効率性などの観点から有効性を検討する．最終的に，都市道路網を対象とした交通均衡分析に基づき，各種の指標を検討することで，対距離料金制度の料金設定について，具体的な特徴を実証的に整理することができる．本研究では，都市高速道路の具体的な対距離料金制度導入に関して交通現象解析にもとづき，社会的便益の増加と現実的料金設定の視点から検討を行う．したがって最終的には，都市高速道路に対する対距離料金制度導入に有効性が期待できることを示す． (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520572357316719744 (CiNii: 1520572357316719744)
80.	Masashi Okushima and 秋山孝正 : Introduction of Predictive Fuzzy Inflow Control for Urban Expressway, --- - ---, Infrastructire Planning Review, Vol.22, No.4, 741-750, 2005. (Summary) The dynamic change of traffic condition is always monitored in traffic control centre. Therefore, it seems to be profitable to consider the estimation of traffic change in near future. The predictive fuzzy controller has been proposed to realize the decision mechanism to consider the future influence. Therefore, the predictive fuzzy logic controller might be regarded as an adaptive way to the dynamic change of traffic conditions. It is confirmed as well that the predictive fuzzy logic controller provide dynamically the efficient traffic flow on urban expressway as an advanced traffic control measure. Therefore, the combination of intelligent devices as ETC and the advanced traffic control technique show the direction of future effective traffic management on urban expressway. (Keyword) ファジィ流入制御 / 交通シミュレーション (Link to Publication Site) ● Publication site (DOI): 10.2208/journalip.22.741 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001204637251328 ● Search Scopus @ Elsevier (DOI): 10.2208/journalip.22.741 (DOI: 10.2208/journalip.22.741, CiNii: 1390001204637251328)
81.	和泉範之, Masashi Okushima and 秋山孝正 : 空間情報を利用した交通行動の時間的推移の表現方法, --- - ---, Infrastructire Planning Review, Vol.22, No.3, 405-412, 2005. (Summary) パーソントリップ調査データは，交通計画の基本データであり，トリップメーカーの1日の交通行動が記載されている．一方で，空間情報システムは各種の空間情報を格納することが可能である．本研究では，全般的に交通計画の基本資料である都市圏PT調査の有効利用方法を検討する．具体的には，�GISで創出可能な空間情報を交通データと統合し，都市圏の交通現象を時空間的に把握する．これにより，都市交通現象を時間的変化，空間的分布の任意側面から検討できる．�精緻な交通行動分析には，道路交通センサス，都市交通調査などの特定目的別交通調査の統合的利用が望まれる．しかしながらGISの空間情報補足と分析機能の援用により交通現象の理解が容易となる．
82.	小島弘子, 田中尚人, Masashi Okushima and 秋山孝正 : Construction of Expert System for urban landscape evaluation, --- - ---, Infrastructire Planning Review, Vol.22, No.2, 345-352, 2005. (Summary) The purpose of this study is to construct Expert System for urban landscape evaluation in order to lead urban landscape to moderate level.In the prototype system in Ogaki-City, three aspects:"Stnicture design", "Visual compatibility"and "Environmental compatibility"were introduced.In this study, the evaluation logic was examine& Especially, the logic for Visual compatibility was established rather complicated logic by considering various harmonies.As the result, 168 inference noles: evaluation knowledge, were installed in the system. In addition, a questionnaire survey was instituted for checking the estimation. Moreover, advices for improvement could be drawn by tracing and the inference process. (Keyword) 景観 / 都市計画 / 空間整備・設計 / エキスパートシステム (Link to Publication Site) ● Publication site (DOI): 10.2208/journalip.22.345 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001204640266624 ● Search Scopus @ Elsevier (DOI): 10.2208/journalip.22.345 (DOI: 10.2208/journalip.22.345, CiNii: 1390001204640266624)
83.	Madhu Errampalli, Masashi Okushima and Takamasa Akiyama : Microscopic Simulation Model Considering Public Transport Policy, Journal of the Eastern Asia Society for Transportation Studies, Vol.6, No.-, 2718-2733, 2005. (Summary) The main purpose of this study is to provide a basis for evaluating the public transport policies such as public transport priority systems (PTPS) by developing microscopic traffic simulation model. In this study, two types of public transport policies have been considered for evaluation. They are: bus lanes and PTPS at traffic signal. Fuzzy logic reasoning has been incorporated in route choice analysis while choosing the route based on the level of satisfaction of the available routes. To demonstrate the validity and applicability of the developed microscopic simulation model, a part of the Gifu city network (60 nodes and 204 links) has been considered and estimated traffic condition without and with policy options. It can be concluded from the output of the present study that developed microscopic traffic simulation model predicts vehicle movements with fair amount of accuracy and can be used to evaluate various public transport policies particularly PTPS. (Keyword) microscopic traffic simulation / public transport priority system (PTPS) / bus lanes / fuzzy logic route choice (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282680267201280 (CiNii: 1390282680267201280)
84.	西林素彦, 大藤武彦, Masashi Okushima and 井上矩之 : 都市高速道路における流入調整による交通制御手法の事前評価, --- - ---, 高速道路と自動車, Vol.48, No.4, 19-28, 2005. (Summary) 都市高速道路網における交通制御手法の一つである「入路流入調整方式」について，実際のフィールドで実験的に「入路流入調整方式」を現地適用して効果を検証するとともに，ドライバーの意識調査を通した導入可能性と要件を検討した．また，ドライバーに受認され得る方式として，「渋滞水準を考慮した動的LP制御モデル」を構築して交通シミュレータを活用して効果と影響を評価し，実用化に向けた課題を提案した． (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1521417755587114112 (CiNii: 1521417755587114112)
85.	秋山孝正, Masashi Okushima and 北村隆一 : 交通行動データを用いた鉄道と買物に関する基礎的分析, --- - ---, 交通学研究/2004年研究年報, Vol.48, No.-, 169-178, 2005. (Summary) 鉄道事業と商業活動が一体化する近年の動向を踏まえて，都市交通現象面から鉄道駅周辺の商業系施設に関係する交通行動の経年的変化を分析する．具体的には，交通行動面から鉄道主要駅の利用者に関して年齢・性別・就業状況などの個人属性ごとの集計を行う．つぎに各時点間の主要鉄道駅周辺における各私鉄事業者の商業開発との交通行動変化の関係を考察する．これらより，鉄道駅ビジネスの鉄道利用者に与える交通行動変化を実証的に検討できる．また統計的な分析結果を踏まえて，交通行動データより典型的な交通行動者の「トリップ連鎖」を観察する．これより現実的に発生する経年的な交通行動変化の詳細な理解が可能となる．
86.	Takamasa Akiyama, Seil Mun and Masashi Okushima : Second-Best Congestion Pricing in Urban Space: Cordon Pricing and Its Alternatives, The Review of Network Economics, Vol.3, No.4, 401-414, 2004. (Summary) This paper examines the effects of alternative congestion pricing systems, cordon pricing and congestion pricing for existing toll roads, using network equilibrium model developed for Osaka metropolitan area, Japan. Cordon pricing is more effective to reduce total efficiency loss from traffic congestion. On the other hand, pricing for existing toll roads keeps the loss in consumers surplus at small level to attain the same level of efficiency gain as the cordon pricing. Difference in efficiencies between cordon pricing and pricing for toll roads could be reduced by refinements in the designs of pricing system for toll roads, such as increasing the number of zones, differentiating the toll schedules by O-D pairs, etc. These extensions require developments of computing methods to obtain the optimal combination of tolls with a large number of dimensions, which is the important task for the future research.
87.	小澤友記子, 秋山孝正 and Masashi Okushima : ファジィ交通行動モデルによる混雑料金政策の影響評価, --- - ---, Infrastructire Planning Review, Vol.21, No.2, 607-618, 2004. (Summary) 混雑料金政策は，都市内における交通需要政策の有効な手段として用いられている．本研究では混雑料金導入時の交通行動変化を分析する．具体的には，交通行動変化推計モデルと交通行動記述モデルを用いる．交通行動変化推計モデルでは，混雑料金導入時の課金対象トリップにおける交通行動変化を推計する．ここではファジィ推論を用いて，人間の交通行動へのあいまい性を考慮している．次にその後に行われる1日の交通行動を推計するため，交通行動記述モデルを用いる．これらの検討から，混雑料金導入時の1日の交通行動パターンが推計され，混雑料金政策の個人行動への影響が分析できる．
88.	陶山貴之, Masashi Okushima and 秋山孝正 : Fundamental Research on the Practical Information Provision Method for Urban Road Network, --- - ---, Infrastructire Planning Review, Vol.21, No.4, 951-960, 2004. (Summary) The information provision should be an important technique of traffic management to produce the efficient traffic flow on the network. In particulg it is quite difficult to assume that drivers may have perfect information on the network in case of emergency. The practical information provision method is proposed for efficient traffic management in emergency conditions in the study. It can be formulated with the four kinds of indexes to restore the traffic flow on the network. The effectiveness of the proposed system is almost equivalent to the theoretical result of optimized allocation of information. (Keyword) 交通流 / 交通管理 / 交通情報 (Link to Publication Site) ● Publication site (DOI): 10.2208/journalip.21.951 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282679614494336 ● Search Scopus @ Elsevier (DOI): 10.2208/journalip.21.951 (DOI: 10.2208/journalip.21.951, CiNii: 1390282679614494336)
89.	村瀬満記, 秋山孝正 and Masashi Okushima : 交通事故多発交差点に関する事故要因分析システムの構築, --- - ---, Infrastructire Planning Review, Vol.21, No.4, 967-976, 2004. (Summary) 交通事故多発交差点における交通安全対策策定のためには，交通事故多発交差点の的確な交通事故要因の把握が必要不可欠である．交通事故多発交差点は，規模，形状，交通状況など多様な要素が複雑に関連しており，交通事故要因の把握のためには，これらの項目相互の関連性および交通事故発生との因果関係を，交通事故要因に関わる知見として蓄積する必要がある．本研究では，交通事故多発地点での交通事故関連データベースを作成するとともに，交通事故要因分析システムを構築することにより，交通事故要因に関して分析する．また，交通安全対策効果を計測可能な交通事故推計モデルを構築し，分析システムを利用した交通安全対策の立案方法を示す．
90.	Masashi Okushima and 秋山孝正 : 交通均衡分析による都市高速道路の料金体系に関する考察, --- - ---, 交通学研究/2003年研究年報, Vol.47, No.-, 169-178, 2004. (Summary) 高速道路の料金制度は，距離比例料金制と均一料金制に分類される．都市高速道路では均一料金制度が用いられてきた．しかしながら，料金自動徴収(ETC)の導入にともない，多様な料金設定も適用可能となってきた．本研究では距離比例料金制導入時の利用交通特性と交通均衡状況について分析をおこなう．このとき，阪神高速道路を対象として，需要変動を考慮した交通均衡分析を実行する．また，距離比例料金導入に対応する交通均衡の技術な計算過程を記述する．これにより都市高速道路の距離比例料金導入による経済便益の基本的な評価が可能となる．
91.	秋山孝正, 安田幸司, Masashi Okushima and 椎谷拓也 : OPTIMAL ALLOCATION PROBLEM IN THE DIVERSION SYSTEM ON URBAN EXPRESSWAY, --- - ---, Journal of Structural Mechanics and Eartquake Engineering, Vol.751, No.IV-62, 13-25, 2004. (Summary) The diversion system on urban expressway has been proposed as a measure to dissolve the traffic congestion in city centre. The system can be determined as a method of traffic management with the promotion for detour from congested sections. Firstly, the fundamental concept of diversion system is described. Impact of the diversion system implementation can be evaluated with the stochastic traffic assignment. Secondly, the optimal implementation of diversion system would be discussed with empirical studies. The diversion system on Hanshin Expressway is assumed as a real size network. The genetic algorithm is applied to search the optimal solution of allocation for the diversion system. It would be concluded that the optimal implementation of the diversion system can provide the efficient traffic as a practical traffic management method. (Keyword) urban expressway / diversion system / genetic algorithm / traffic assignment (Link to Publication Site) ● Publication site (DOI): 10.2208/jscej.2004.13 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001205602396416 ● Search Scopus @ Elsevier (DOI): 10.2208/jscej.2004.13 (DOI: 10.2208/jscej.2004.13, CiNii: 1390001205602396416)
92.	Masashi Okushima, 大窪剛文 and 大藤武彦 : 都市高速道路における交通管理施策評価のための交通シミュレーションシステム開発, --- - ---, Infrastructire Planning Review, Vol.20, No.3, 531-538, 2003. (Summary) 都市高速道路の適切な交通管理をおこなうためには，本線上の交通状況の高い精度で推計する必要がある．また，速道路本線に関する渋滞情報や，渋滞緩和のために行う流入制御によって，都市高速道路への流入予定車両が，周辺の一般街路などの代替経路への迂回を選択することも考えられ，これらの車両群の影響についても考慮しておく必要がある．本研究では，都市高速道路での交通管制システムにおける交通流シミュレーションモデルの適用のため，高速道路本線上の交通状況についての高い推計精度を保有し，迂回交通の影響も含めた施策評価を可能とするシステムを開発をおこなった．
93.	Masashi Okushima, Yoshiharu Takihi and Takamasa Akiyama : Fuzzy Traffic Controller in Ramp Metering of Urban Expressway, Journal of Advanced Computational Intelligence and Intelligent Informatics, Vol.7, No.2, 207-214, 2003. (Summary) Many uncertain factors should be considered to produce the efficient traffic control in the practical situations. The inflow control method with fuzzy logic has been proposed to maintain the smooth traffic on the urban expressway. On the other hand, the advanced inflow control with the scheme of ramp metering has been discussed as well because the rapid progress of ITS technology can be seen on the real network. The fuzzy inflow controller would be formulated as a practical ramp metering method with referring to the former related researches. The advantages of fuzzy inflow controller would be summarized with the empirical studies.
94.	秋山孝正 and Masashi Okushima : 都市交通政策としてのゾーン別混雑料金設定, --- - ---, 交通学研究/2002年研究年報, Vol.46, No.-, 201-210, 2003. (Summary) 実際的な混雑料金政策の運用では，料金徴収方法や混雑料金水準の設定方法が問題であり，特にリンク単位の課金は現実的には困難である．本研究では，具体的方法として「ゾーン別混雑料金」を検討し，都市交通の道路交通緩和効果と社会的便益による混雑料金政策分析を行う．具体的には混雑料金と交通量配分法の理論的関係を整理する．また需要変動型の交通量配分によるゾーン別混雑料金問題に対してGAを用いた解法を紹介する．さらに，モデルの拡張として交通機関分担を明示的に算定可能な統合型交通量配分を導入する．同様にGAを用いて，公共交通変化を考慮したゾーン別混雑料金が検討可能となる．これより，都市道路網の実用的な混雑料金政策の導入方法が議論できる．
95.	秋山孝正, 小川圭一, Masashi Okushima and 土田貴義 : カオス理論を用いた都市高速道路流入交通量の時系列予測に関する研究, --- - ---, 日本ファジィ学会誌, Vol.14, No.4, 421-430, 2002. (Summary) 都市高速道路の適切な交通管理をおこなうためには，各オンランプからの流入交通量の予測をおこない，それにもとづく本線上の交通状況の予測をおこなう必要がある．しかしながら，流入交通量は不規則な変動を示すため，従来法である指数平滑法による予測は困難であった．そこで本研究では，不規則な変動に対応できる予測方法として，カオス理論，ニューラルネットワークを用いた流入交通量の時系列予測方法を提案する．さらに，流入交通量予測値を用いて渋滞シミュレーションによる交通状況の予測をおこない，交通管理への適用性について検討をおこなう．この結果，従来法に比較して予測精度が向上することがわかった．とくに，短期的な流入交通量の変動の予測においては，局所ファジィ再構成法を用いたカオス理論による予測が有効であることがわかった． (Keyword) Urban Expressway / Inflow Traffic / Time Series Estimation / Chaos Theory / Neural Network (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282679314370048 (CiNii: 1390282679314370048)

Academic Paper (Unrefereed Paper):

1.	Satoshi Hyodo, 北中幸輝, Masashi Okushima and 小林貴 : 周辺幹線道路との関係性を考慮した地方圏の生活道路交差点における交通事故要因分析, 第44回交通工学研究発表会論文集, 2024.

Review, Commentary:

1.	Hideo Yamanaka, Kojiro WATANABE, Yoichi Kawaguchi and Masashi Okushima : グリーンインフラとまちづくり, Journal of Human and Environmental Symbiosis, Vol.39, No.2, 139-148, Sep. 2023. (Link to Publication Site) ● Publication site (DOI): 10.32313/jahes.39.2_139 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390297836121665536 ● Search Scopus @ Elsevier (DOI): 10.32313/jahes.39.2_139 (DOI: 10.32313/jahes.39.2_139, CiNii: 1390297836121665536)
2.	Masashi Okushima : An Analysis of Conversion to Bicycle Commuting in Tokushima City when Fuel Costs Rise, 日本統合医療学会四国支部会報, Vol.15, 78-79, Nov. 2022. (Keyword) healthy activities (Tokushima University Institutional Repository) ● Metadata: 118595 (Tokushima University Institutional Repository: 118595)
3.	Masashi Okushima : Effect Analysis of Transport Policy toward Decarbonization of Local Areas -Application of Multi-Agent Simulation-, Transportation and Economy, Vol.897, 134-135, Mar. 2022. (Keyword) Decarbonization / Multi-Agent Simulation / Transport Policy / Local Areas
4.	Masashi Okushima : Analysis of factors promoting daily exercise in Tokushima, 日本統合医療学会四国支部会報, Vol.13, 54-55, Dec. 2020. (Keyword) healthy activities (Tokushima University Institutional Repository) ● Metadata: 118594 (Tokushima University Institutional Repository: 118594)
5.	Masashi Okushima : Fundamental analysis on promotion of healthy activities in daily life in a local urban area, 日本統合医療学会四国支部会報, Vol.12, 54-55, Nov. 2019. (Keyword) healthy activities (Tokushima University Institutional Repository) ● Metadata: 118593 (Tokushima University Institutional Repository: 118593)
6.	Masashi Okushima : MaaS (Mobility as a Service), Journal of Japan Society for Fuzzy Theory and Intelligent Informatics, Vol.31, No.3, 40, Jun. 2019.

Proceeding of International Conference:

1.	Masashi Okushima : Application of machine learning models for partial remote work intension in provincial areas of Japan, Proceeding of Joint 12th the International Conference on Soft Computing and Intelligent Systems and 23th International Symposium on Intelligent Systems, 1-6, Dec. 2022. (Keyword) machine learning / decision tree / remote work / verification (Link to Publication Site) ● Publication site (DOI): 10.1109/SCISISIS55246.2022.10002154 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-85146686032 (DOI: 10.1109/SCISISIS55246.2022.10002154, Elsevier: Scopus)
2.	Masashi Okushima and Akio Kondo : Causal Structure Related to Reduced Car Use Considering Attitudes for Healthy Lifestyles in a Provincial City without Sufficient Public Transport, Proceedings of the Eastern Asia Society for Transportation Studies, Vol.13, 1-19, Hiroshima, Sep. 2021.
3.	Masashi Okushima, Hideo Yamanaka and Kojiro WATANABE : Modeling for residence preference in local city considering heterogeneous households, Proceeding of Joint 11th the International Conference on Soft Computing and Intelligent Systems and 21th International Symposium on Intelligent Systems, 160-165, Dec. 2020. (Keyword) hierarchical Bayesian modeling / heterogeneity / residence preference / local city / disaster risk (Link to Publication Site) ● Publication site (DOI): 10.1109/SCISISIS50064.2020.9322750 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-85100428288 (DOI: 10.1109/SCISISIS50064.2020.9322750, Elsevier: Scopus)
4.	Kojiro WATANABE, Hideo Yamanaka and Masashi Okushima : Disaster Risk Evaluation Considering Climate Change for Land Use Planning, Proceedings of the 2019 International Conference on Climate Change, Disaster Management, and Environmental Sustainability, 573-578, Kumamoto, Dec. 2019. (Summary) The purpose of the study is to develop the disaster risk evaluation method for land use planning. Tar-get area is Tokushima Urban Area (TUA), Japan. We evaluated the disaster risk to integrate three hazards, these are Tsunami, flooding and land slide. The recovery period from three disasters was used as the index of risk. We used only the open data to calculate the disaster risk. We executed two cases of risk evaluation, considering and not considering climate change. The evaluation values of disaster risk is calculated by the number of population, the ratio of wooden houses, the probability of disaster, the ratio of disaster area, and the time period of reconstruction. From the results of the evaluation, we shown the central area of Tokushima city has high disaster risk area. The area is designated as an urbanization promotion area. Therefore, in the future, the area needs to reinforce the infrastructures and buildings. (Keyword) climate change / disaster risk evaluation / provincial cities / land use / recovery period
5.	Tanida Hidetoshi and Masashi Okushima : Long-term Management System for Multiple Bridges Considering Road User Cost, Proceeding of 16th International Conference on Computational Urban Planning and Management for Smart Cities, 152-164, Wuhan, Jul. 2019. (Keyword) life cycle cost / traffic assignment / road user cost / asset management
6.	Masashi Okushima : Social Simulation of Promoting Electric Vehicles for Evaluation of Policies in Local City, Proceeding of Joint 10th the International Conference on Soft Computing and Intelligent Systems and 19th International Symposium on Intelligent Systems, 298-303, Toyama, Dec. 2018. (Keyword) greenhouse gas emission / multi-agent simulation / hierarchical Bayesian modeling / vehicle type choice (Link to Publication Site) ● Publication site (DOI): 10.1109/SCIS-ISIS.2018.00059 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.1109/SCIS-ISIS.2018.00059 (DOI: 10.1109/SCIS-ISIS.2018.00059)
7.	Masashi Okushima : Multi-Agent Simulation of Promoting Clean Energy Vehicle for Evaluation of Policies, Proceedings of Joint 17th World Congress of International Fuzzy Systems Association and 9th International Conference on Soft Computing and Intelligent Systems, 1-4, Otsu, Jun. 2017. (Keyword) multi-agent simulation / hierarchical Bayesian modeling / greenhouse gas emission / small-world network
8.	Masashi Okushima : Multi-Agent Simulation of Commuting Modal Shift Considering with Health Conscious, Proceeding of Joint 8th the International Conference on Soft Computing and Intelligent Systems and 17th International Symposium on Intelligent Systems, 472-477, Sapporo, Aug. 2016. (Link to Publication Site) ● Publication site (DOI): 10.1109/SCIS-ISIS.2016.0106 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.1109/SCIS-ISIS.2016.0106 (DOI: 10.1109/SCIS-ISIS.2016.0106)
9.	Hori Hiroki and Masashi Okushima : Impact Analysis of Toll Policy for Expressway to Variable Traffic Demand for Local City with Integrated User Equilibrium Assignment Model, Proceedings of the Eastern Asia Society for Transportation Studies, Vol.11, 580-594, Cebu, Philippines, Sep. 2015. (Link to Publication Site) ● Publication site (DOI): 10.11175/easts.11.580 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001205289502464 ● Search Scopus @ Elsevier (DOI): 10.11175/easts.11.580 (DOI: 10.11175/easts.11.580, CiNii: 1390001205289502464)
10.	Masashi Okushima : Multi-Agent Simulation for Promoting Clean Energy Vehicle Considering with Concern for Environment and Local Interaction, Proceedings of the Eastern Asia Society for Transportation Studies, Vol.11, Cebu, Philippines, Sep. 2015.
11.	Masashi Okushima and Akiyama Takamasa : Effect analysis of diversion discount system as traffic management for incident congestion on urban expressway, Preprints of 6th International Symposium on Transportation Network Reliability, Nara, Aug. 2015.
12.	Masashi Okushima and Akiyama Takamasa : Multi-Agent Simulation for Promoting Clean Energy Vehicle Considering with Local Interaction, Proceeding of Joint 7th the International Conference on Soft Computing and Intelligent Systems and 15th International Symposium on Intelligent Systems, Vol.7, No.TP4-1-9-(5), 1-5, Kitakyushu, Dec. 2014.
13.	Masashi Okushima : Analysis of Eco-mobility Shift Considering with Heterogeneity and Social Interaction, Proceedings of Frontiers in Transportation Scocial Interaction 2013, Munich, Aug. 2013. (Keyword) greenhouse gas emission / hierarchical Bayesian modeling / structural equation model / multi agent simulation
14.	Takamasa Akiyama, Hiroaki Inokuchi and Masashi Okushima : Practical Management of Distance Based Toll System for Urban Expressway, Selected Proceedings of the 13th World Conference of Transport Research, Rio de Janeiro, Brazil, Jul. 2013.
15.	Masashi Okushima and Akiyama Takamasa : Multi-Agent Transport Simulation Model with Social Network in Small World, Proceeding of Joint 6th the International Conference on Soft Computing and Intelligent Systems and 13th International Symposium on Intelligent Systems, Vol.6, No.W2-55-4, 1-6, Nov. 2012.
16.	Masashi Okushima and Hideo Yamanaka : Traffic Simulation of Evacuation by Vehicle at the Outbreak of Tsunami in the Coastal Plain Area of the Local City, Proceedings of the Disaster Management 2012, 381-390, Kumamoto, Aug. 2012. (Keyword) evacuation / traffic demand estimation / traffic simulation / disaster management
17.	Masashi Okushima : Analysis of commuting modal shift with social interaction of consciousness for environment, Proceedings of 13th International Conference on Travel Behaviour Research, 1-21, Jul. 2012. (Keyword) greenhouse gas emission / structural equation model / small world network / multi agent simulation
18.	Akiyama Takamasa, Masashi Okushima and Inokuchi Hiroaki : Empirical Implementation of Distance based Toll for Urban Expressway, Proceedings of the 1st Conference of Transportation Research Group of India, 1-12, Dec. 2011. (Keyword) urban economics / Traffic Demand Estimation
19.	Masashi Okushima, Akiyama Takamasa and Errampalli Madhu : Impact Analysis of Bus Fare System with Microscopic Fuzzy Traffic Simulation, Proceedings of the 1st Conference of Transportation Research Group of India, 1-12, Dec. 2011. (Keyword) simulation / fuzzy reasoning / transportation engineering
20.	Kong Qingyue, Akio Kondo, Masashi Okushima and Akiko Kondo : Effect of Public Transport Use on Increase in Physical Activity of Urban Residents -A Case Study Focusing on Bus Use in Tokushima Urban Areas-, Proceedings of 12th International Conference on Computers in Urban Planning and Urban Management, 1-15, Jul. 2011.
21.	Masashi Okushima and Akio Kondo : Design of Promotion Plan for Eco-Commuting with Multi Agent Simulation Model, Proceedings of 12th International Conference on Computers in Urban Planning and Urban Management, 1-15, Jul. 2011. (Keyword) social interaction / eco consciousness / modal shift / greenhouse gas emission / small world network
22.	Takamasa Akiyama, Masashi Okushima and Madhu Errampalli : CarFollowing Model with Fuzzy Reasoning Approach for Microscopic Network Traffic Simulation, Proceedings of the 13th International Fuzzy Systems Association World Congress, 1-7, Jun. 2011. (Keyword) traffic simulation / car-following / fuzzy reasoning / road network
23.	Abdullah SAIFIZUL Ahmad, KARIM Rehan Mohamed, Hideo Yamanaka and Masashi Okushima : Empirical Analysis on the Effect of Gross Vehicle Weight and Vehicle Size on Speed in Car Following Situation, Proceedings of the Eastern Asia Society for Transportation Studies, Vol.8, Korea, Jun. 2011.
24.	Masashi Okushima and Takamasa Akiyama : Multi Agent Simulation Model for Design of Eco-Commuting Promotion Planning, Proceeding of Joint 5th the International Conference on Soft Computing and Intelligent Systems and 11th International Symposium on Intelligent Systems, Vol.5, No.SA-D5-2, 1-6, Dec. 2010.
25.	Masashi Okushima, Takamasa Akiyama and Madhu Errampalli : Microscopic Fuzzy Urban Traffic Simulation with Variable Demand, Selected Proceedings of the 12th World Conference of Transport Research, 1-21, Jul. 2010.
26.	Hiroaki Inokuchi, Takamasa Akiyama and Masashi Okushima : Evaluation of Environmental Improvement Policy in an Urban Network Using Road Traffic Simulation, Selected Proceedings of the 12th World Conference of Transport Research, 1-14, Jul. 2010.
27.	Takamasa Akiyama and Masashi Okushima : Application of Artificial Society Model to Urban Transport Planning, Proceedings of the SCIS & ISIS 2008, Vol.4, No.FR-F1-3, 1-6, Nagoya, Sep. 2008. (Summary) Many complex aspects can be observed in urban transport planning. The study aims at showing the application of the artificial society approach to the problem of urban transport planning. The specific distribution can be observed as an emergence through the interaction of agents. The agents are defined to move in the society according to the action rules depending on the acquired information and knowledge of experience. The decision of each agent for day to day travel is formulated in the agent model corresponding to the urban transport planning. Each agent should have different preference to the alternatives of trips. On the other hand, traffic flow on urban network should be estimated summarizing the individual behaviours of commuter in the integrated model. Therefore, the simulator of artificial society consists of two interactive procedures of travel behaviour estimation and agent daily decision. Furthermore, the daily transport condition can be monitored by the illustration of GIS software. It is helpful to discuss the effective transport planning in artificial society. (Keyword) travel behaviour model / urban transport planning / artificial society
28.	Masashi Okushima and Takamasa Akiyama : Fuzzy Microscopic Traffic Flow Simulation for Impact Estimation of On-street Parking, Proceedings of the SCIS & ISIS 2008, Vol.4, No.FR-F1-4, 1-6, Nagoya, Sep. 2008. (Summary) The roadside parking of vehicles severely affects traffic flow conditions by increasing congestion, travel times etc. on urban roads. It reduces road capacity and need to be carefully examined to propose appropriate solution. Many microscopic traffic simulation models have not analyzed driver behaviour around roadside parking areas deeply. In the present study, a separate parking area movement model has been proposed for microscopic traffic simulation considering partial lane change behaviour which has been identified to describe driver behaviour especially at roadside parking areas. A suitable technique namely fuzzy logic has also been proposed to represent realistic driver behaviour around roadside parking areas considering uncertainties and perceptions because of human element and other complexities in modelling. The comparison between estimated and observed data on Gifu city network indicated that fuzzy reasoning approach has produced realistic driver behaviour than standard model. The proposed fuzzy logic based parking movement model in microscopic traffic simulation is applied. The relevant transport policy namely on-street parking restriction has been evaluated. (Keyword) fuzzy reasoning / partial lane change / microscopic traffic simulation / on-street parking restriction

Proceeding of Domestic Conference:

1.	Satoshi Hyodo, SHIOKAWA Shintaro, KITANAKA Koki and Masashi Okushima : 通過交通特性指標による影響に着目した生活道路交差点における交通事故要因分析, 土木学会全国大会第79回年次学術講演会, Sep. 2024.
2.	KITANAKA Koki, Satoshi Hyodo and Masashi Okushima : 周辺幹線道路との関係性を考慮した生活道路交差点における交通事故要因分析, 令和 6 年度土木学会四国支部第 30 回技術研究発表会, Jun. 2024.
3.	Tetsuya Toyoda and Masashi Okushima : Return Migration to Nonmetropolitan Areas and the Relative Income Hypothesis: An Analysis of Individual Income Levels and Subjective Status Identification, 人文地理学会大会研究発表要旨, Vol.23, 73-74, Nov. 2023. (Keyword) migration of population / regional inequalities / Life Course / Social stratification / income distribution
4.	KANTAROH Morimoto and Masashi Okushima : 徳島県出身者のふるさと回帰行動に関する基礎的研究, 土木学会四国支部技術研究発表会講演概要集, Vol.29, May 2023.
5.	Yuma Nagai and Masashi Okushima : 携帯端末位置情報データを用いた交通サービス需要の基礎的分析, 土木学会四国支部技術研究発表会講演概要集, Vol.29, May 2023.
6.	Rintaro Shimizu and Masashi Okushima : ANALYSIS OF THE POSSIBILITY OF PROMOTING TELEWORK IN PROVINCIAL AREAS AND ITS IMPACT ON DAILY ACTIVITIES, 土木計画学研究·講演集, Vol.66, 1-5, Nov. 2022. (Keyword) remote work / daily activities / provincial area / time use
7.	Xuewen DONG, Masashi Okushima and Kojiro WATANABE : EVALUATION FOR ADMINISTRATIVE SERVICE FACILITY OPERATIONS CONSIDERING USE OF AUTOMATION IN LOCAL CITY, 土木計画学研究·講演集, Vol.66, 1-9, Nov. 2022. (Keyword) administrative service facilities / efficiency / fairness / facility operations
8.	Kenta Cyoshi and Masashi Okushima : STUDY ON TRAFFIC MANAGEMENT DURING LARGE-SCALE REPAIR OF MAJOR ROAD BRIDGES IN TOKUSHIMA CITY, 土木計画学研究·講演集, Vol.66, 1-6, Nov. 2022. (Keyword) traffic simulation / road construction / route choice
9.	Kosuke Takami and Masashi Okushima : CHARACTERISTIC ANALYSIS OF TOURING PATTERNS OF VISITORS TO THE TOKUSHIMA PREFECTURAL AREA, 土木計画学研究·講演集, Vol.66, 1-6, Nov. 2022. (Keyword) tourist behavior / mobile location data / excursion activity
10.	Masashi Okushima : Modeling of intentions for remote work in partial time in provincial areas, Proceedings of the Fuzzy System Symposium, Vol.38, 1-4, Sep. 2022. (Keyword) remote work / machine learning / questionnaire survey data
11.	Tetsuya Toyoda and Masashi Okushima : Return Migration by Educational Background and Regional Income Inequality: A Case Study of Tokushima Prefecture, 研究発表要旨, Vol.2021, 72-73, Nov. 2021. (Keyword) migration of population / regional inequalities / Life Course / relative income hypothesis
12.	Masashi Okushima : Multi-Agent Simulation for Evaluation of Transport Policies to Refrain from Commuting by Car in a Local City, Proceedings of the Fuzzy System Symposium, Vol.37, 620-625, Sep. 2021. (Keyword) heterogeneity / Bayesian hierarchial modeling / questionnaire survey data
13.	Kenta Cyoshi and Masashi Okushima : Analysis of Departure Time Distribution Effects at Large-Scale Repair of Road Bridges in Tokushima City, 交通工学研究発表会論文集, Vol.41, 393-397, Aug. 2021. (Keyword) traffic simulation / repair of road / departure time distribution
14.	Kenta Cyoshi and Masashi Okushima : ANALYSIS OF LANE MANAGEMENT EFFECTS AT LARGE-SCALE REPAIR OF ROAD BRIDGES IN LOCAL CITY, 土木計画学研究·講演集, Vol.63, Jun. 2021. (Keyword) traffic simulation / road construction / route choice
15.	Kosuke Takami and Masashi Okushima : CHARACTERISTICS ANALYSIS FOR TIME AND SPACE DISTRIBUTION OF VISTORS IN TOKUSHIMA PREFECTURE, 土木計画学研究·講演集, Vol.63, Jun. 2021. (Keyword) staying time / mobile location data / tourist behavior
16.	Kosuke Takami and Masashi Okushima : 地方部への来訪者の滞在時空間分布についての基礎的研究, 土木学会四国支部技術研究発表会講演概要集, Vol.27, May 2021.
17.	Kenta Cyoshi and Masashi Okushima : 地方都市圏の道路橋梁大規模補修時における車線運用に関する基礎的研究, 土木学会四国支部技術研究発表会講演概要集, Vol.27, May 2021.
18.	Hidetoshi Tanida and Masashi Okushima : 人口減少を考慮した複数主要橋梁での長期補修におけるライフサイクルコストの分析, 土木学会年次学術講演会講演概要集, Sep. 2020.
19.	Mayu Yamaoka and Masashi Okushima : A BASIC ANALYSIS OF TRAFFIC MANAGEMENT ASSUMED DOWNPOUR, 土木計画学研究·講演集, Vol.61, Jun. 2020. (Keyword) downpour / information provision / departure behavior
20.	Atsuya Ohtake and Masashi Okushima : EFFECT OF INTRODUCING BRT ON THE TOKUSHIMA URBAN AREA, 土木計画学研究·講演集, Vol.61, Jun. 2020. (Keyword) bus rapid transit / local transport
21.	Hirotaka Kawachi and Masashi Okushima : BASIC ANALYSIS ON TRAFFIC MANAGEMENT DURING LARGE-SCALE REPAIR OF URBAN EXPRESSWAYS, 土木計画学研究·講演集, Vol.61, Jun. 2020. (Keyword) expressway / construction / information provision
22.	Mayu Yamaoka and Masashi Okushima : 集中豪雨想定時における交通マネジメントに関する基礎的研究, 土木学会四国支部技術研究発表会講演概要集, Vol.26, May 2020.
23.	Hirotaka Kawachi and Masashi Okushima : 都市高速道路の大規模補修時における交通マネジメントに関する基礎的研究, 土木学会四国支部技術研究発表会講演概要集, Vol.26, May 2020.
24.	Atsuya Ohtake and Masashi Okushima : 徳島都市圏におけるBRT導入についての基礎的研究, 土木学会四国支部技術研究発表会講演概要集, Vol.26, May 2020.
25.	Masashi Okushima, Takeyoshi Morikawa, Hideo Yamanaka and Kojiro WATANABE : IMPACT ANALYSIS OF POLICY FOR RELOCATION IN REGIONAL CITIES WITH DISASTER RISK, 土木計画学研究·講演集, Vol.60, Nov. 2019. (Keyword) residential environment / disaster risk / location choice / public transport / stated preference
26.	Kojiro WATANABE, Hideo Yamanaka and Masashi Okushima : A Study on the Disaster Risk Evaluation and Its Countermeasures Considering Global Climate Change in Tokushima Urban Area, 土木計画学研究·講演集, Vol.60, Nov. 2019. (Summary) 地球規模での気候変動は，世界各地でかつてない規模，頻度の災害発生を引き起こす要因ともなっている．一方，我が国では人口減少社会に入っており，小集落の消滅も進んでいる．本研究では，複数の災害が想定される徳島都市圏を対象に，気候変動に伴う災害の激甚化を踏まえた災害リスクとその対策を評価することで，今後の地域づくり戦略の方向性を示す．災害リスクは，災害，曝露，脆弱性の組み合わせにより評価する．災害は，津波，洪水，土砂災害とし，その被災エリアは自治体が発表している予測値を用いる．曝露対象は世帯とし，その脆弱性は世帯年齢，建築構造，再建年数で表す．評価の空間単位は500mメッシュとする．災害への対策として，インフラ防御策を想定し，その効果を災害リスク評価値で示す．この結果を基に，土地利用の面から今後の地域づくり戦略の方向性を示す． (Keyword) Disaster Risk Evaluation / Tsunami disaster / Flood disaster / Landslide disaster / Resettlement
27.	Hideo Yamanaka, Masashi Okushima, Kojiro WATANABE and Kazuhisa Iwaka : Analysis on the Effect the Life Recovery after the Serious Disasters by the Living Location of Multi-Household Families, Proceedings of Japan Association for Human and Environmental Symbiosis, Vol.22, 1-7, Sep. 2019.
28.	Masashi Okushima, Hideo Yamanaka and Kojiro WATANABE : Analysis of Evaluation Structure for Residential Environment in Local Cities with Disaster Risk, Proceedings of Japan Association for Human and Environmental Symbiosis, Vol.22, 8-16, Sep. 2019.
29.	Katou Hirokazu, Kitazume Keiichi, Park Suil and Masashi Okushima : A Study of the Change of Spatial Structure for the Realization of Renewable City as measures for Mitigation and Adaptation of Climate Change, Proceedings of Annual Meeting for Society of Environmental Science 2019, 177-178, Sep. 2019.
30.	Masashi Okushima, Kojiro WATANABE and Hideo Yamanaka : Modeling for Evaluation of Residential Environment in Local City Considering Heterogeneous Households, Proceedings of the Fuzzy System Symposium, Vol.35, 482-486, Aug. 2019. (Keyword) heterogeneity / evaluation structure / questionnaire survey data / relocation
31.	Masashi Okushima, Koutaro Toyoda, Kojiro WATANABE and Hideo Yamanaka : 徳島都市圏での新築戸建住宅立地における災害リスク・近居・まちへの想いの影響分析, 土木計画学研究·講演集, Vol.59, Jun. 2019.
32.	Atsushi Watanabe, Masashi Okushima and Kojiro WATANABE : 地方都市における都市持続可能性に関する総合評価のための基礎的研究, 土木学会四国支部技術研究発表会講演概要集, Vol.25, Jun. 2019.
33.	Kazuki Imazawa and Masashi Okushima : 鉄道と端末交通の連携による公共交通利用促進に関する基礎的研究, 土木学会四国支部技術研究発表会講演概要集, Vol.25, Jun. 2019.
34.	Takeyoshi Morikawa and Masashi Okushima : 津波リスクを考慮した地方都市圏における居住地選好要因の基礎的分析, 土木学会四国支部技術研究発表会講演概要集, Vol.25, Jun. 2019.
35.	Baolong Cheng and Masashi Okushima : 近畿圏における大型車の高速道路利用に関する要因の基礎的分析, 土木学会四国支部技術研究発表会講演概要集, Vol.25, Jun. 2019.
36.	栗川智成, Kojiro WATANABE, Hideo Yamanaka and Masashi Okushima : A Study on the Disaster Risk Evaluation Considering Serious Disaster Damage, part2, --- Evaluation to the Tokushima Urban Area ---, Proceedings of AIJ Shikoku Chapter Architectural Research Meeting, No.19, 91-92, May 2019. (Keyword) Serious Disaster Damage / Risk evaluation / Land use planning
37.	Kojiro WATANABE, Chisei Kurikawa, Hideo Yamanaka and Masashi Okushima : A Study on the Disaster Risk Evaluation Considering Serious Disaster Damage, part1, --- Concept and Evaluation Method ---, Proceedings of AIJ Shikoku Chapter Architectural Research Meeting, No.19, 89-90, May 2019. (Keyword) Serious Disaster Damage / Risk evaluation / Land use planning
38.	Park Suil, Katou Hirokazu, Shimizu Hiromu, Ono Yuki, Ishikawa Yoshiharu, Hideo Yamanaka, Masashi Okushima, Kojiro WATANABE, Iwaka Kazuhisa and Akiyama Yuki : 気候変動に対応した地域のサステナビリティとレジリエンスを同時に考慮できる評価手法, 土木計画学研究·講演集, Vol.58, Nov. 2018.
39.	Hidetoshi Tanida and Masashi Okushima : ANALYSIS OF LIFE CYCLE COST ON LONG-TERM MANAGEMENT FOR MULTIPLE BRIDGES CONSIDERING TRAFFIC FLOW, 土木計画学研究·講演集, Vol.58, Nov. 2018.
40.	Hidetoshi Tanida and Masashi Okushima : 道路利用者負担を考慮した複数橋梁における長期補修計画に関する基礎分析, 土木学会年次学術講演会講演概要集, Aug. 2018.
41.	Hidetoshi Tanida and Masashi Okushima : Analysis of Long-term Management for Multiple Bridges Considering Road User Cost, 交通工学研究発表会論文集, Vol.38, 365-371, Aug. 2018.
42.	Masashi Okushima, Kojiro WATANABE, Hideo Yamanaka and Toyoda Kotarao : 世帯異質性を考慮した地方都市圏における居住地環境の評価構造に関する分析, 土木計画学研究·講演集, Vol.57, Jun. 2018.
43.	Park Suil, Katou Hirokazu, Ishikawa Yoshiharu, Hideo Yamanaka, Masashi Okushima and Kojiro WATANABE : 地域のサステナビリティとレジリエンスを同時に考慮できる評価システムの開発, 土木計画学研究·講演集, Vol.57, Jun. 2018.
44.	Hideo Yamanaka, CHENG FEI, Masashi Okushima and Kojiro WATANABE : リスク分散型近居による災害からの生活再建への寄与, 土木計画学研究·講演集, Vol.57, Jun. 2018.
45.	Kojiro WATANABE, Hideo Yamanaka and Masashi Okushima : A study on the integrated disaster risk evaluation in Tokushima urban area, 土木計画学研究·講演集, Vol.57, Jun. 2018. (Summary) 本研究は，複数の災害が想定される徳島都市圏を対象に，現場でも利用できる簡便な手法，入手しやすいデータにより，災害リスクを統合化する手法を開発する．想定する災害は，津波，洪水，土砂災害であり，災害リスクを被災後の生活再建期間と考える．災害別の住宅の損傷度を想定し，アンケート調査結果を基に，高齢世代，生産年齢世代に分けて，生活再建年数を設定した．4次メッシュ単位で各災害の生活再建年数を求め，それらを合計することで，総合災害リスク評価値を計算した．その結果，津波，洪水の危険性が高く，かつ人口が集中している鳴門市，松茂町，徳島市，小松島市の各中心部で高い評価値となり，重点的な対策が必要なことが分かった． (Keyword) Disaster Risk Evaluation / Tsunami disaster / Flood disaster / Landslide disaster / Resettlement
46.	Yi Mao and Masashi Okushima : 仮想の道路網における交通事故発生時の交通マネジメント効果に関する研究, 土木学会四国支部技術研究発表会講演概要集, May 2018.
47.	Hidetoshi Tanida and Masashi Okushima : 道路利用者負担を考慮した複数橋梁における長期補修計画に関する基礎的分析, 土木学会四国支部技術研究発表会講演概要集, May 2018.
48.	Yang Jianjun and Masashi Okushima : Development of Traffic Simulator for Traffic Management at Construction Regulating of Urban Expressway, 土木計画学研究·講演集, Vol.56, Nov. 2017.
49.	Numata Hideki and Masashi Okushima : ANALYSIS OF ROUTE CHOICE ON THE RAIL NETWORK IN KEIHANSHIN URBAN AREA, 土木計画学研究·講演集, Vol.56, Nov. 2017.
50.	Kondo Yusuke and Masashi Okushima : ANALYSIS OF MOBILITY ON NON-SERVICE AREA OF PUBLIC TRANSPORT IN LOCAL CITY, 土木計画学研究·講演集, Vol.56, Nov. 2017.
51.	Kotarao Toyoda, Masashi Okushima, Kojiro WATANABE and Hideo Yamanaka : 地方都市圏での津波リスクを考慮した居住地選択に関する基礎的分析, 土木計画学研究·講演集, Vol.56, Nov. 2017.
52.	Masashi Okushima : ANALYSIS FOR PROMOTION OF DAILY ACTIVITY FOR HEALTH IN LOCAL CITY, 環境システム研究論文発表会講演集, Vol.45, 113-118, Oct. 2017.
53.	Kazuhisa Iwaka, Hideo Yamanaka, Daigoro Hama, Masashi Okushima and Kojiro WATANABE : 津波脅威下にある沿岸集落におけるリスク分散型近居に向けた実践とその展望, 日本環境共生学会学術大会論文集, Vol.20, 73-80, Sep. 2017.
54.	Masashi Okushima : Measuring Mobility Level Considering with Availability of Transport Modes in Local City, Proceedings of the 33th Fuzzy System Symposium, Vol.33, 1-2, Sep. 2017. (Keyword) accessibility
55.	Masashi Okushima : IMPACT ANALYSIS OF TRANSPORT POLICY FOR REDUCTION OF GREENHOUSE GAS EMISSION WITH MULTI-AGENT SIMULATION, 土木計画学研究·講演集, Vol.55, 1-10, Jun. 2017.
56.	Takuwa Misaki and Masashi Okushima : ANALYSIS OF INTENTION FOR MODAL SHIFT WITH PROMOTION OF ACTIVITY FOR HEALTH IN LOCAL CITY, 土木計画学研究·講演集, Vol.55, 1-6, Jun. 2017.
57.	Yusuke Kondo, Masashi Okushima and Akio Kondo : モビリティの格差に配慮した地域交通サービスの在り方に関する基礎的研究, 土木学会四国支部技術研究発表会講演概要集, May 2017.
58.	Numata Hideki, Masashi Okushima and Akio Kondo : 京阪神都市圏鉄道ネットワークにおける経路選択に関する基礎的研究, 土木学会四国支部技術研究発表会講演概要集, May 2017.
59.	Toyoda Kotarou, Masashi Okushima and Akio Kondo : 地方都市圏での津波リスクを考慮した居住地選択に関する基礎的分析, 土木学会四国支部技術研究発表会講演概要集, May 2017.
60.	Matsui Yuki, Masashi Okushima, Aki Hiroshi and Hanazumi Yohichi : FUNDAMENTAL ANALYSIS OF COUNTERMEASURE FOR TRAFFIC CONGESTION ON FLOOD AT RAINFALL USING TRAFFIC SIMULATION, 土木計画学研究·講演集, Vol.54, 1-5, Nov. 2016.
61.	Masashi Okushima : Impact Analysis of Diversion Discount System for Incident Congestion on Urban Expressway, Proceedings of the 32th Fuzzy System Symposium, Vol.32, 1-2, Sep. 2016. (Keyword) route choice
62.	Yuki Matsui, Masashi Okushima, Akio Kondo and Hiroshi Aki : 交通シミュレーションを用いた降雨浸水時の交通渋滞緩和に関する基礎的分析, 土木学会四国支部技術研究発表会講演概要集, May 2016.
63.	Masashi Okushima : ANALYSIS FOR PROMOTION OF ACTIVITY FOR HEALTH CONSIDERING WITH TIME OF LIFE IN LOCAL CITY, 土木計画学研究·講演集, Vol.53, 1-4, May 2016.
64.	Yang Jianjun, Masashi Okushima and HAGIHARA Takeshi : Fundamental Analysis about Travel Behavior and Information Recognition at Closed Regulation of Urban Expressway, 土木計画学研究·講演集, Vol.52, 1-6, Nov. 2015.
65.	Ueno Yohsuke, Masashi Okushima, Kojiro WATANABE and Akio Kondo : FUNDAMENTAL ANALYSIS FOR LAYOUT OF SUSTAINABLE CITY CONSIDERING WITH RISK OF TSUNAMI DISASTER, 土木計画学研究·講演集, Vol.52, 1-5, Nov. 2015.
66.	Takuwa Misaki, Masashi Okushima and Akio Kondo : ANALYSIS OF INTENTION FOR MODAL SHIFT ON COMMUTING TRIP WITH ADVICE FOR HEALTH, 土木計画学研究·講演集, Vol.52, 1-5, Nov. 2015.
67.	Masashi Okushima : Multi-Agent Simulation for Promoting Clean Energy Vehicle with Economic Measure, Proceedings of the 31th Fuzzy System Symposium, Vol.31, 1-6, Sep. 2015. (Keyword) Multi Agent Simulation
68.	Taichi Wakikawa, Akio Kondo and Masashi Okushima : 徳島市における市民の健康増進のためのフィットネス施設の利用意識に関する研究, 土木計画学研究·講演集, Vol.51, 1-4, Jun. 2015.
69.	Masashi Okushima : ANALYSIS OF COMMUTING MODE SHIFT CONSIDERING WITH HETEROGENEITY OF SOCIAL CONFORMITY, 土木計画学研究·講演集, Vol.51, 1-7, Jun. 2015.
70.	Kitamura Yutaro, Akio Kondo, Akiko Kondo and Masashi Okushima : 四国の市町村を対象とした地域間交流モデルの推定に関する研究, 土木学会四国支部技術研究発表会講演概要集, 183-184, May 2015.
71.	Ueno Yousuke, Masashi Okushima and Akio Kondo : 津波災害リスクを考慮した持続可能な都市構造に関する基礎的分析, 土木学会四国支部技術研究発表会講演概要集, 199-200, May 2015.
72.	Takuwa Misaki, Masashi Okushima and Akio Kondo : 健康意識に配慮した通勤モビリティマネジメントについての基礎的分析, 土木学会四国支部技術研究発表会講演概要集, 221-222, May 2015.
73.	Wakikawa Taichi, Akio Kondo and Masashi Okushima : 徳島市における市民の健康増進のためのフィットネス施設の利用意識に関する研究, 土木学会四国支部技術研究発表会講演概要集, 223-224, May 2015.
74.	Masashi Okushima and FUKUDA Takanori : ANALYSIS OF INTENTION FOR EVACUATION FROM CONCEIVABLE TUNAMI IN LOCAL COAST AREA, 土木計画学研究·講演集, Vol.50, 1-6, Nov. 2014.
75.	Masashi Okushima : Analysis of Mode Shift to Sustainable Transport Considering with Heterogeneity of Social Conformity, 日本環境共生学会学術大会論文集, Vol.17, 1-10, Sep. 2014.
76.	Masashi Okushima and Takamasa Akiyama : Multi-Agent Simulation for Promoting the Clean Energy Vehicle Considering with Social Conformity, Proceedings of the 30th Fuzzy System Symposium, Vol.30, 1-2, Sep. 2014. (Keyword) Multi Agent Simulation
77.	Masashi Okushima : TRAVEL BEHAVIOR MODEL CONSIDERING WITH INTERACTION OF THE HEALTH CONSCIOUS, 土木計画学研究·講演集, Vol.49, 1-3, Jun. 2014.
78.	shunsuke Ohashi, Akio Kondo and Masashi Okushima : Behavior Analysis in Use of Urban Parks in Consideration of Health of Urban Residents, 土木計画学研究·講演集, Vol.49, 1-5, Jun. 2014.
79.	Wakikawa Taichi, Akio Kondo, Syunsuke Ohhashi and Masashi Okushima : 徳島市における住民意識調査に基づく市民の健康度とフィットネスクラブの利用実態, 土木学会四国支部技術研究発表会講演概要集, May 2014.
80.	Masashi Okushima : 地方都市部沿岸地域における津波避難行動に関する基礎的分析, 土木学会四国支部技術研究発表会講演概要集, May 2014.
81.	Masaki Syouji, Masashi Okushima and Akio Kondo : 地方都市における選択肢集合を考慮した目的地選択行動の基礎的分析, 土木学会四国支部技術研究発表会講演概要集, May 2014.
82.	Taishin Onogawa, Kojiro WATANABE, Masashi Okushima and Akio Kondo : A Study on the Relationship between Land price and Tsunami Risk in the Coastal Area of Japanese Provincial Cities, 土木学会四国支部技術研究発表会講演概要集, May 2014.
83.	Fujii Ryouhei, Kenji Katoh, Masaka Mieko, Masashi Okushima and Akio Kondo : FUNDAMENTAL ANALYSIS FOR MODAL SHIFT WITH PROVISION OF HEALTH INFORMATION, 土木計画学研究·講演集, Vol.48, 1-4, Nov. 2013. (Keyword) Transtheoretical Model / Mobility Management / Health Information
84.	Ishii Ayaka and Masashi Okushima : Effect Analysis of the Promotion Policy for the Clean Energy Vehicle, 土木計画学研究·講演集, Vol.48, 1-5, Nov. 2013. (Keyword) electric vehicle / car-holding / intention survey / greenhouse gas emission
85.	Takanori Fukuda and Masashi Okushima : Traffic Simulation for Evacuation Planning at the Outbreak of Tsunami in Local City, 土木計画学研究·講演集, Vol.48, 1-5, Nov. 2013. (Keyword) tunami evacuation / traffic demand estimation / traffic simulation / local city
86.	Torii Yasuhiro, Masashi Okushima, Hagihara Takeshi and Komoto Ichiro : Fundamental Analysis about Travel Behavior at Closed Regulation of Urban Expressway, 土木計画学研究·講演集, Vol.48, 1-5, Nov. 2013. (Keyword) urban expressway / travel behavior / questionnaire survey / information recognition
87.	Keisuke Mishina, Masashi Okushima and Akio Kondo : Factor Analysis of the Promotion of Photovoltaics and CEV in Business Site, 土木計画学研究·講演集, Vol.48, 1-5, Nov. 2013. (Keyword) electric vehicle / photovoltaic generation system / greenhouse gas / local city
88.	Masashi Okushima and Takamasa Akiyama : Multi-Agent Transport Simulation Considering with Social Conformity, Proceedings of the 29th Fuzzy System Symposium, Vol.29, Sep. 2013. (Keyword) Multi Agent Simulation
89.	Fujii Ryohei, Kenji Katoh, Mieko Masaka, Akio Kondo and Masashi Okushima : Effect of moderating car use with information provision for helth, 第八回日本モビリティ・マネジメント会議発表概要集, Jul. 2013. (Keyword) information about helth / mobility management / local city / bicycle commuting
90.	Takeshi Hagihara, Yukiko Ozawa, Masanao Shimada, Takehiko Daito, Nobuhiro Uno, Fumitaka Kurauchi and Masashi Okushima : IMPROVING PREDICTION ACCURACY BY TRAFFIC SIMULATOR-RELATED TECHNOLOGY DEVELOPMENTS USING VARIOUS DATA, 土木計画学研究·講演集, Vol.47, 1-7, Jun. 2013. (Keyword) expressway / traffic simulation
91.	Hiroki Hori and Masashi Okushima : Impact Analysis of Toll Policy for Expressway to Local City Considering with Modal Sprit, 土木計画学研究·講演集, Vol.47, 1-8, Jun. 2013. (Keyword) expressway toll / traffic assignment / variable demand
92.	Masashi Okushima and Ishii Ayaka : SIMULATION FOR PROMOTION PLANNING OF CLEAN ENERGY VEHICLE CONSIDERING WITH SOCIAL INTERACTION, 土木計画学研究·講演集, Vol.47, 1-11, Jun. 2013. (Keyword) multi agent simulation / local interaction / social conformity / small world network / clean energy vehicle
93.	Takashi Harada, Kohjirou Murakami, Akio Kondo and Masashi Okushima : 徳島市都心部における土地需給に基づく住居系土地利用の潜在需要分析, 土木学会四国支部技術研究発表会講演概要集, Vol.19, 199-200, May 2013.
94.	Syunsuke Ohhashi, Yuudai Seyama, Akio Kondo and Masashi Okushima : 住民意識調査に基づく身体活動量の増加に寄与する公園整備に関する研究, 土木学会四国支部技術研究発表会講演概要集, Vol.19, 209-210, May 2013.
95.	Yasuhiro Torii, Masashi Okushima and Akio Kondo : Fundamental analysis about Travel Behavior at Closed Regulation of Expressway, 土木学会四国支部技術研究発表会講演概要集, Vol.19, 239-240, May 2013. (Keyword) Closed Regulation / Travel Behavior / Expressway
96.	Fukuda Takanori, Masashi Okushima and Akio Kondo : Traffic Simulation for Evacuation Planning at theTsunami in Coastal Area of Tokushima City, 土木学会四国支部技術研究発表会講演概要集, Vol.19, 233-234, May 2013. (Keyword) Traffic Simulation / Evacuation Planning / Tsunami
97.	Keisuke Mishina, Masashi Okushima and Akio Kondo : Fundamental analysis about the Promotion Factor of Photovoltaics and CEV on Business Site, 土木学会四国支部技術研究発表会講演概要集, Vol.19, 191-192, May 2013. (Keyword) photovoltaic generation system / clean energy vehicle / intention survey
98.	Ohnishi Hiroki and Masashi Okushima : Analysis of Factor for Commuting Time Dicision of Car User in the Local Area, 土木計画学研究·講演集, Vol.46, 1-6, Nov. 2012. (Keyword) survival analysis / flextime system / safe period
99.	Ohshima Takuya and Masashi Okushima : ANALYSIS OF PROMOTION FOR VISITING TO CITY CENTER WITH DISCOUNT OF BUS TOLL, 土木計画学研究·講演集, Vol.46, 1-4, Nov. 2012. (Keyword) bus service level / vitalization of city center / behavior intention / social experiment
100.	Ishii Ayaka and Masashi Okushima : Holding Decision Model of Clean Energy Vehicle Considering with Present Holding Vehicle, 土木計画学研究·講演集, Vol.46, 1-5, Nov. 2012. (Keyword) electric vehicle / car-holding / intention survey
101.	Youhei Imai, Masashi Okushima and Akio Kondo : Analysis of Modal Shift of Commuting Trip by Economic Incentive Policy, 土木計画学研究·講演集, Vol.46, 1-4, Nov. 2012. (Keyword) environment tax / road pricing / RP/SP model / questionnaire survey
102.	Kenji Katoh, Mieko Masaka, Akio Kondo and Masashi Okushima : POSSIBILITY OF TRANSTHEORETICAL MODEL TO TRANSPORT POLICY, 土木計画学研究·講演集, Vol.46, 1-4, Nov. 2012. (Keyword) information about helth / mobility management / local city / bicycle commuting
103.	Masashi Okushima and Takamasa Akiyama : Multi Agent Simulation for Promotion Planning of Clean Energy Vehicle, Proceedings of the 28th Fuzzy System Symposium, Vol.27, Sep. 2012. (Keyword) Multi Agent Simulation
104.	Mieko Masaka, Kenji Katoh, Akio Kondo and Masashi Okushima : Research for Applicability of Modal Shift at Hilled Rural Area in Tokushima Prefecture, Proceedings of 7th Japanese Conference On Mobility Management, Aug. 2012. (Keyword) hilled rural area / modal shift / questionnaire survey
105.	Mieko Masaka, Kenji Katoh, Akio Kondo and Masashi Okushima : Effect of information provision about helth on the promotion policy of bicycle commuting in local city, 土木計画学研究·講演集, Vol.45, 1-6, Jun. 2012. (Keyword) information about helth / mobility management / local city / bicycle commuting
106.	Masashi Okushima, Youhei Imai and Akio Kondo : Analysis of Modal Shift of Commuting Trip with Social Interaction of Environmental Consciousness, 土木計画学研究·講演集, Vol.45, 1-4, Jun. 2012. (Keyword) structural equation modeling / eco consciousness / social interaction / multi-agent simulation
107.	Hiroki Hori and Masashi Okushima : Impact Analysis of Toll Policy for Expressway to Local City with Integrated User Equilibrium Traffic Assignment Model, 土木計画学研究·講演集, Vol.45, 1-4, Jun. 2012. (Keyword) expressway toll / traffic assignment / variable demand
108.	Ayaka Ishii, Masashi Okushima and Akio Kondo : Fundamental Analysis about Intention on Holding of Clean Energy Vehicle, 土木学会四国支部技術研究発表会講演概要集, Vol.18, 195-196, May 2012. (Keyword) electric vehicle / internet questionnaire survey / latent class model
109.	Takuya Ohshima, Masashi Okushima and Akio Kondo : Fundamental analysis about promotion of visiting to the town centre wirh dicount of bus toll, 土木学会四国支部技術研究発表会講演概要集, Vol.18, 193-194, May 2012. (Keyword) social experiment / internet questionnaire survey / discrete choice model
110.	Hiroki Ohnishi, Masashi Okushima and Akio Kondo : Fundamental analysis about commuting time of car user in the local city, 土木学会四国支部技術研究発表会講演概要集, Vol.18, 191-192, May 2012. (Keyword) person trip survey / Weibul-distribution / commuting time
111.	Yukiko Ozawa, Takeshi Hagiwara, Masashi Okushima, Nobuhiro Uno and Takehiko Daito : An Evaluation of Outflow Control for Incident Congestion Measures on Urban Expressway, 土木計画学研究·講演集, Vol.44, 1-8, Nov. 2011. (Keyword) outflow control / traffic simulation / incident management
112.	Tatsuya Ueda and Masashi Okushima : Identification of Travel Bihavior Model for Application of PCATS in Local City, 土木計画学研究·講演集, Vol.44, 1-5, Nov. 2011. (Keyword) travel behavior analysis / traffic simulation / travel demand
113.	Youhei Imai, Masashi Okushima and Akio Kondo : Structural Equation Modeling of Social Interaction of Eco-Consciousness on Commuting Mode Choice, 土木計画学研究·講演集, Vol.44, 1-5, Nov. 2011. (Keyword) structural equation modeling / eco consciousness / social interaction / RP/SP data
114.	Hiroki Hori and Masashi Okushima : Integrated User Equilibrium Traffic Assignment Model for Impact Analysis of Expressway Toll Policy to Local Area, 土木計画学研究·講演集, Vol.44, No.58, 1-5, Nov. 2011. (Keyword) expressway toll / traffic assignment / variable demand
115.	Mieko Masaka, Kenji Katoh, Akio Kondo and Masashi Okushima : Infrastructure Development for Electric Vehicle Promotion in the Local City, 土木計画学研究·講演集, Vol.44, 1-8, Nov. 2011. (Keyword) recharging infrastructure / electric vehicles / local city / demand responsive transport
116.	Masashi Okushima and Takamasa Akiyama : Proposal of Multi Agent Traffic Simulation with Departure Time Choice Model, Proceedings of the 27th Fuzzy System Symposium, Vol.27, Sep. 2011. (Keyword) Multi Agent Simulation
117.	Mieko Masaka, Kenji Katoh, Akio Kondo and Masashi Okushima : Transport Policy toward Low-Carbon Society Focusing on Helth Aspect in Provincial City, 土木計画学研究·講演集, Vol.43, 1-8, May 2011.
118.	Masashi Okushima and Takamasa Akiyama : Analysis of Influence by Planning of Eco-Commuting Promotion with Multi Agent Simulation, 土木計画学研究·講演集, Vol.43, 1-8, May 2011. (Keyword) multi agent simulation / social interaction / eco consciousness / modal shift / greenhouse gas emission reduction
119.	Tatsuya Ueda, Masashi Okushima and Akio Kondo : Application of Travel Behavior Simurator PCATS for Local City, 土木学会四国支部技術研究発表会講演概要集, Vol.17, 237-238, May 2011. (Keyword) travel behavior analysis / traffic simulation / travel demand
120.	Hiroki Hori, Masashi Okushima and Akio Kondo : Impact Analysis of Expressway Toll Policy to Local Resional Traffic Area, 土木学会四国支部技術研究発表会講演概要集, Vol.17, 235-236, May 2011. (Keyword) expressway toll / traffic assignment / variable demand
121.	Youhei Imai, Masashi Okushima and Akio Kondo : Structural Equation Modeling of Social Interaction of Eco-Consciousness on Commuting Mode Choice, 土木学会四国支部技術研究発表会講演概要集, Vol.17, 195-196, May 2011. (Keyword) structural equation modeling / eco consciousness / social interaction
122.	Masaya Takagi and Masashi Okushima : Travel Demand Estimation with Behavioral Intention Method to Discount of Bus Toll Measure, 土木計画学研究·講演集, Vol.42, Nov. 2010. (Keyword) Travel Demand Estimation / Traffic Behaviour Survey
123.	Masashi Okaue and Masashi Okushima : Real Time Traffic Simulation Model for Traffic Control with Accident on Urban Expressway, 土木計画学研究·講演集, Vol.42, Nov. 2010. (Keyword) Traffic Flow / Traffic Control
124.	大谷育樹, Akio Kondo, Masashi Okushima and 孔慶玥 : 歩いて暮らせるまちづくりによる健康度の向上効果の計測方法に関する研究, 土木計画学研究·講演集, Vol.42, Nov. 2010.
125.	Masashi Okushima and Takamasa Akiyama : Multi Agent Simulation for Planning of Eco-Commuting Promotion, Proceedings of the 25th Fuzzy System Symposium, Vol.26, Sep. 2010. (Keyword) Multi Agent Simulation / Eco-Commuting / environmental consciousness
126.	Naoya Okada, Akira Kikuchi, Masashi Okushima and Satoshi Fujii : Activity-Travel Simulator for Evaluation of Toll System on Urban Expressway, 土木計画学研究·講演集, Vol.41, Jun. 2010. (Keyword) Activity-Travel Simulator / Toll System on Urban Expressway / public policy
127.	Masashi Okushima and Akio Kondo : Analysis of Social Experiment with Discount of Bus Toll in Local City, 土木計画学研究·講演集, Vol.41, Jun. 2010. (Keyword) Bus Toll / Social Experiment / Discount Policy
128.	Masashi Okaue, Masashi Okushima and Akio Kondo : Integrated traffic simulation for simple road with microscopic and macroscopic flow model, 土木学会四国支部技術研究発表会講演概要集, 229-230, May 2010. (Keyword) traffic flow / traffic simulation / expressway
129.	Masaya Takagi, Masashi Okushima and Akio Kondo : Analysis of Potential Demand of Bus System with Behavioral Intention Method in the Local City, 土木学会四国支部技術研究発表会講演概要集, 233-234, May 2010. (Keyword) Behavioral Intention Method / Potential Demand / Bus Transport System
130.	大谷育樹, Akio Kondo, Masashi Okushima and 大西賢和 : 歩いて暮らせる健康的なまちづくりの評価に関する研究, 土木学会四国支部技術研究発表会講演概要集, 243-244, May 2010.
131.	Risa Mukai, Akio Kondo, Masashi Okushima, Akiko Kondo and Kanako Otsuka : サービス水準の向上からみた全国高速交通体系の整備効果の計測, 土木計画学研究·講演集, Vol.40, 223, Nov. 2009.
132.	Masashi Okushima and Takamasa Akiyama : Emergency Information Provision supported by Fuzzy Reasoning Model, Proceedings of the 25th Fuzzy System Symposium, Vol.25, Jul. 2009. (Keyword) fuzzy reasoning / traffic information provision / traffic accident
133.	Masashi Okushima and Takamasa Akiyama : Traffic Simulator for Evaluation of Hourly Toll System on Urban Expressway, 土木計画学研究·講演集, Vol.39, Jun. 2009. (Keyword) urban expressway / hourly toll system / route search / deperture time decision / traffic simulation
134.	石川智裕, Akio Kondo, 余田翔平 and Masashi Okushima : 徳島県における商業施設整備のシミュレーション分析に関する研究, 土木学会四国支部技術研究発表会講演概要集, 241-242, May 2009.
135.	竹内駿祐, Akio Kondo, 程琦 and Masashi Okushima : 通勤交通に着目した都市交通政策による健康促進効果に関する研究, 土木学会四国支部技術研究発表会講演概要集, 237-238, May 2009.

Et cetera, Workshop:

1.	Masashi Okushima : チャレンジ!とくしま賑わいプロジェクトの取り組み, 四国のまちづくりに関する見学会&情報交換会講演資料, Dec. 2009.
2.	Masashi Okushima and Junko Sanada : 第39回土木計画学研究発表会, 高速道路と自動車, Vol.52, No.10, Oct. 2009.

Grants-in-Aid for Scientific Research (KAKEN Grants Database @ NII.ac.jp)

Demand Responded Toll for Urban Expressway with Deep Learning Model (Project/Area Number: 22K04358 )
Study on evaluation of sustainable urban structure considering heterogeneous household and interaction between local area (Project/Area Number: 21K04290 )
EBPMに向けた地域格差問題と地方圏における人口移動に関する研究 (Project/Area Number: 21K01047 )
Evaluation of sustainable urban structure and transportation system considering social interaction (Project/Area Number: 16K06540 )
Application techniques of pricing policy for urban expressway regarding with traffic management (Project/Area Number: 26420525 )
Study of policy for reduction of greenhouse gas emission from vehicle traffic considering with social interaction (Project/Area Number: 25420549 )
A study on safety evaluation of junction treatments considering bicycles running on the carriageway using driving and cycling simulator (Project/Area Number: 25289166 )
Development and validation of safety evaluation method of traffic flow considering vehicle type and gross weight (Project/Area Number: 24656303 )
Traffic operation of urban expressway considering toll system (Project/Area Number: 23560636 )
Effect Analysis of Transport Policy for Reduction of Global Greenhouse Gas Emission with Multi-Agent Simulation System (Project/Area Number: 22560533 )
Study on informative signage and road markings consideringcharacteristics of bicycle users' eye fixation (Project/Area Number: 22360209 )
Development of a Multi Agent Participatory Simulation System with Social Interaction (Project/Area Number: 20246084 )
ファジィ制御に基づく都市高速道路流入調整方法の適用性の検討 (Project/Area Number: 18760389 )
Evaluation of Road Pricing by Travel Behavior Model with Fuzzy Logic (Project/Area Number: 16560460 )
都市高速道路における交通流動の推移を考慮した適応的リアルタイム交通制御モデル構築 (Project/Area Number: 15760395 )
Application of Travel Behavior Model with Intelligent Information Processing Application of Travel Behavior Model with Intelligent Information Processing (Project/Area Number: 14550528 )
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Professor : Okushima, Masashi

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Grants-in-Aid for Scientific Research (KAKEN Grants Database @ NII.ac.jp)