Satoh Masayoshi 佐藤政良

… Alternative Names

Researcher Number	70021722
Other IDs
External Links
Affiliation (Current)	2019: 筑波大学, 生命環境系, 名誉教授
Affiliation (based on the past Project Information) *help	2007 – 2009: University of Tsukuba, 大学院・生命環境科学研究科, 教授 2004: University of Tsukuba, Graduate School of Life and Environmental Sciences, Professor, 大学院・生命環境科学研究科, 教授 2000 – 2003: 筑波大学, 農林工学系, 教授 1996 – 1998: 筑波大学, 農林工学系, 教授 1990 – 1992: 筑波大学, 農林工学系, 助教授 1986: 筑大, 農林工学系, 助教授 1986: Institute of Agricultural and Forestry Engineering, University of Tsukuba, 農林工学系, 助教授
Review Section/Research Field	Principal Investigator 農業土木 / Irrigation, drainage and rural engineering/Rural planning / Irrigation, drainage and rural engineering/Rural planning Except Principal Investigator 農業土木 / 林学
Keywords	Principal Investigator 農民参加 / 用水量 / 水管理 / Thailand / タイ / 水文特性 / land consolidation / Raifall forecast / Flood management / Paddy irrigation … More Except Principal Investigator 排水 / Return flow / 水需要 / 河川水温 / satellite image analysis / regulating reservoir / flowing water / 灌漑排水 / 貯水運用 / 水循環 / 貯水 / 流域荒廃 / 水系 / 水循環速度 / 潅漑 / comprehensive management / low flow / 多目的ダム / パイナップル畑 / タイ / 農地 / 水利システム / Paddy field / 総合管理 / 湧水温 / land use / cultivated land / Common water law / Efficiency / 河川次数 / soil erosion / 調整池 / Thailand / 農業用水 / 水温上昇 / Water temperature / multipurpose dam / Drainage / 反復利用率 / 土壌侵食 / Water management / 広域利水 / Sediment transport / Irrigation / Watershed / 侵入能 / 渇水 / 水利用効率 / forest land / 流量変動 / 水収支 / Hydrological cycle / 土壌浸食 / 綜合管理 / 森林 / 中山間地水田 / 利水パターン / 土砂移動 / stored water management / 反復利用 / 土地利用 / 水利用計画 / 効率 / 水循環効率 / 河川維持用水 / 水管理 / 衛星画像解析 / pineapple / Water utilization / 廻し水路 / パイナップル / 流出 / 潅漑用水 Less

Common principles of Farmers' Participation in Irrigation Management in Japan and Asian CountriesPrincipal Investigator
- Principal Investigator
  
  SATOH Masayoshi
- Project Period (FY)
  2007 – 2009
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Irrigation, drainage and rural engineering/Rural planning
- Research Institution
  University of Tsukuba
Paddy Water Demand System under Participatory Irrigation ManagementPrincipal Investigator
- Principal Investigator
  
  SATOH Masayoshi
- Project Period (FY)
  2002 – 2004
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Irrigation, drainage and rural engineering/Rural planning
- Research Institution
  University of Tsukuba
Elucidation of causal chains and restoration applying agricultural engineering approaches for watershed degradation to the Lam Phachi River, Thailand
- Principal Investigator
  
  MAITA Hideji
- Project Period (FY)
  2000 – 2002
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  林学
- Research Institution
  University of Tsukuba
Adoption of Modern Agricultural Infrastructure in ThailandPrincipal Investigator
- Principal Investigator
  
  SATOH Masayoshi
- Project Period (FY)
  1996 – 1998
- Research Category
  
  Grant-in-Aid for international Scientific Research
- Research Field
  
  Irrigation, drainage and rural engineering/Rural planning
- Research Institution
  University of Tsukuba
CASE STUDY OF COMPREHENSIVE MANAGEMENT OF WATERRESOURCES IN DROUGHT PERIODS IN TONE. YODO & YAHAGI RIVER BASINS
- Principal Investigator
  
  OKAMOTO Masami
- Project Period (FY)
  1991 – 1992
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  農業土木
- Research Institution
  IWATE UNIVERSITY
Flood Management at Reservoirs for Irrigation in JapanPrincipal Investigator
- Principal Investigator
  
  SATOH Masayoshi
- Project Period (FY)
  1991 – 1992
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  農業土木
- Research Institution
  University of Tsukuba
Synthetic evaluation of efficiency in hydrological cycle in large watershed
- Principal Investigator
  
  SUZUKI Mitsukata
- Project Period (FY)
  1990 – 1992
- Research Category
  
  Grant-in-Aid for General Scientific Research (B)
- Research Field
  
  農業土木
- Research Institution
  UNIVERSITY of TSUKUBA
現代における農業用水反復利用の総合的評価に関する研究Principal Investigator
- Principal Investigator
  
  佐藤政良
- Project Period (FY)
  1986
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  農業土木
- Research Institution
  University of Tsukuba
Studies on the development of water management system from the view point of river basin pattern
- Principal Investigator
  
  SUZUKI Mitsukata
- Project Period (FY)
  1984 – 1986
- Research Category
  
  Grant-in-Aid for Developmental Scientific Research
- Research Field
  
  農業土木
- Research Institution
  Institute of Agricultural and Forestry Engineering

All 2010 2009 2008 2007 2004 2003

All Journal Article Presentation Book

[Book] 水資源とその配分-農業用水利用の特徴と渇水対応『21世紀水危機-農からの発想』2003
- Author(s)
  佐藤政良
- Total Pages
  364
- Publisher
  山崎農業研究所
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-14360139
[Journal Article] Analysis of water management structures of an Integrated Water User Group in the Chao Phraya Delta, Thailand2010
- Author(s)
  Vipob Teamsuwan, Masayoshi Satoh Tatsuji Onimaru, Va-son Boonkird
- Journal Title
  
  Paddy and Water Environment Vol.8
  
  Pages: 51-61
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19380133
[Journal Article] Analysis of water management structures of an Integrated Water User Group in the Chao Phraya Delta, Thailand2010
- Author(s)
  Vipob Teamsuwan, Masayoshi Satoh, Tatsuji Onimaru, Vason Boonkird
- Journal Title
  
  Paddy and Water Environment 8
  
  Pages: 51-61
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19380133
[Journal Article] Comparative analysis of management of three water users' organizations : successful cases in the Chao Phraya Delta, Thailand2009
- Author(s)
  Vipob Teamsuwan, Masayoshi Satoh
- Journal Title
  
  Paddy and Water Environment 7
  
  Pages: 57-68
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19380133
[Journal Article] 水田地帯から排水路への流出量の日内変化についての一考察-茨城県福岡堰地区を対象として-2009
- Author(s)
  谷口智之・河野賢・佐藤政良・岩本智裕
- Journal Title
  
  水文・水資源学会誌 22(1)
  
  Pages: 40-47
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19380133
[Journal Article] 参加型水管理支援事業の自立発展性評価の現状分析2009
- Author(s)
  鬼丸竜治、佐藤政良
- Journal Title
  
  農業農村工学会論文集 264
  
  Pages: 57-68
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19380133
[Journal Article] 参加型水管理支援事業の自立発展性評価の現状分析2009
- Author(s)
  鬼丸竜治, 佐藤政良
- Journal Title
  
  農業農村工学会論文集 Vol.264
  
  Pages: 57-68
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19380133
[Journal Article] Comparative analysis of management of three water users' organizations : successful cases in the Chao Phraya Delta, Thailand2009
- Author(s)
  Vipob Teamsuwan, Masayoshi Satoh
- Journal Title
  
  Paddy and Water Environment Vol.7
  
  Pages: 57-68
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19380133
[Journal Article] Principles and Methods for Participatory Irrigation Management and Role Sharing between Government and Farmers2008
- Author(s)
  SATOH Masayoshi, KONO Satoshi, Tassanee Ounvichit
- Journal Title
  
  Farming Japan Vol.42-2
  
  Pages: 13-22
- Data Source
  KAKENHI-PROJECT-19380133
[Journal Article] Participatory Management Structure of Large-Scale People's Irrigation System : The Cost of the Soprong Muang Fai System, Northern Thailand2008
- Author(s)
  Tassanee Ounvichit, Supat Wattayu, SATOH Masayoshi
- Journal Title
  
  Southeast Asian Studies Vol.46, No.1
  
  Pages: 145-162
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19380133
[Journal Article] An Alternative Approach to Sustainable Water Users' Organization in National Irrigation Systems : the Case of the Khlong Thadi Weir System, Southern Thailand, Irrigation and Drainage2008
- Author(s)
  Tassanee Ounvichit, Atsushi Ishii, Satoshi Kono, Kanjana Thampratankul, Satoh Masayoshi
- Journal Title
  
  Published online in Wiley Inter Science 57
  
  Pages: 23-39
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19380133
[Journal Article] 農民参加型水管理の原理と実現方策2007
- Author(s)
  佐藤政良・河野賢・タサニーウンヴィチット・石井敦
- Journal Title
  
  農業農村工学会誌 No.75(7)
  
  Pages: 615-620
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19380133
[Journal Article] 中国河北省石津灌区の水不足時における節水管理の分析2004
- Author(s)
  任永懐, 佐藤政良, 楊継富, 郭宗信, 佐久間泰一
- Journal Title
  
  水文・水資源学会誌 17・5
  
  Pages: 515-522
- Data Source
  KAKENHI-PROJECT-14360139
[Journal Article] Water Saving Analysis of Management System of the Shijin Irrigetion District, Hebei Province, China2004
- Author(s)
  REN Yonghuai, SATOH Masayoshi, Yang Jifu, GUO Zongxin, SAKUMA Taiichi
- Journal Title
  
  J.Japan Soc.Hydrol. & Water Resour. 17(4)
  
  Pages: 381-391
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-14360139
[Journal Article] 節水効果からみた中国河北省石津灌区における水管理システムの分析2004
- Author(s)
  壬永懐, 佐藤政良, 楊継富, 郭宗信, 佐久間泰一
- Journal Title
  
  水文・水資源学会誌 17・4
  
  Pages: 381-391
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-14360139
[Journal Article] Effective Use of a Reservoir for Paddy Irrigation in Tropical Monsoon Asia -A Case Study of the Ngamoeyeik Project Lower Myanmar2004
- Author(s)
  Maung Maung Naing, SATOH Masayoshi
- Journal Title
  
  Paddy and Water Environment 2・1
  
  Pages: 19-25
- Data Source
  KAKENHI-PROJECT-14360139
[Journal Article] 中国河北省石津灌区の水不足時における節水管理の分析2004
- Author(s)
  任永懐, 佐藤政良, 楊継富, 郭宗信
- Journal Title
  
  水文・水資源学会誌 17・5
  
  Pages: 515-522
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-14360139
[Journal Article] Effective Use of a Reservoir for Paddy Irrigation in Tropical Monsoon Asia -A Case Study of the Ngamoeyeik Project, Lower Myanmar2004
- Author(s)
  Maung Maung Naing, SATOH Masayoshi
- Journal Title
  
  Paddy and Water Environment 2-1
  
  Pages: 19-25
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-14360139
[Journal Article] Effective Use of a Reservoir for Paddy Irrigation in Tropical Monsoon Asia -A Case Study of the Ngamoeyeik Project, Lower Myanmar2004
- Author(s)
  Maung Maung Naing, SATOH Masayoshi
- Journal Title
  
  Paddy and Water Environment 2・1
  
  Pages: 19-25
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-14360139
[Journal Article] 節水効果からみた中国河北省石津灌区における水管理システムの分析2004
- Author(s)
  任永懐, 佐藤政良, 楊継富, 郭宗信, 佐久間泰一
- Journal Title
  
  水文・水資源学会誌 17・4
  
  Pages: 381-391
- Data Source
  KAKENHI-PROJECT-14360139
[Journal Article] An Analysis of Water Saving Management under Water Shortage Condition in the Shijin Irrigetion District, Hebei Province, China2004
- Author(s)
  REN Yonghuai, SATOH Masayoshi, Yang Jifu, GUO Zongxin
- Journal Title
  
  J.Japan Soc.Hydrol. & Water Resour. 17(5)
  
  Pages: 515-522
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-14360139
[Journal Article] The Present Situation and Problems of the Establishment of Water Users Organizations in the Chao Phraya Delta2003
- Author(s)
  NIMARU Tatsuji, SATOH Masayoshi, KAWSARD K., SHIODA Katsuro
- Journal Title
  
  Trans. of Japanese Society of Irrigation, Drainage and Reclamation Engineering 225
  
  Pages: 119-126
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-14360139
[Journal Article] The Present Situation and Problems of the Establishment of Water Users Organizations in the Chao Phraya Delta2003
- Author(s)
  ONIMARU Tatsuji, SATOH Masayoshi, KAWSARD K., SHIODA Katsuro
- Journal Title
  
  Trans.of Japanese Society of Irrigation, Drainage and Reclamation Engineering 225
  
  Pages: 119-126
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-14360139
[Journal Article] Rainfall Evaluation for the Paddy Cropping Schedule in Lower Myanmar2003
- Author(s)
  M.M.Naing, SATOH Masayoshi, FUJIKI Tomohisa
- Journal Title
  
  Trans. of Japanese Society of Irrigation, Drainage and Reclamation Engineering 223
  
  Pages: 99-105
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-14360139
[Journal Article] Water Resources and Its Allocation in Water Crisis in 21^<st> Century -Proposals from Agricultural Fields2003
- Author(s)
  SATOH Masayoshi
- Journal Title
  
  Yamazaki Research Institute of Agriculture
  
  Pages: 364-364
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-14360139
[Journal Article] The Present Situation and Problems of the Establishment of Water Users Organizations in the Chao Phraya Delta2003
- Author(s)
  ONIMARU Tatsuji, SATOH Masayoshi, KAWSARD K, SHIODA Katsuro
- Journal Title
  
  Trans. of Japanese Society of Irrigation, Drainage and Reclamatin Engineering 225
  
  Pages: 119-126
- Data Source
  KAKENHI-PROJECT-14360139
[Journal Article] Rainfall Evaluation for the Paddy Cropping Schedule in Lower Myanmar2003
- Author(s)
  M.M.Naing, SATOH Masayoshi, FUJIKI Tomohisa
- Journal Title
  
  Trans.of Japanese Society of Irrigation, Drainage and Reclamation Engineering 223
  
  Pages: 99-105
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-14360139
[Journal Article] Rainfall Evaluation for the Paddy Cropping Schedule in Lower Myanmar2003
- Author(s)
  M.M.Naing, SATOH Masayoshi, FUJIKI Tomohisa
- Journal Title
  
  Trans.of Japanese Society of Irrigation, Drainage and Reclamatin Engineering 223
  
  Pages: 99-105
- Data Source
  KAKENHI-PROJECT-14360139
[Presentation] エジプトの水資源の現状と課題2010
- Author(s)
  佐藤政良
- Organizer
  筑波大学生命環境科学研究科プロジェクト「『水の世紀』における水問題解決手法に関する知見の統合」
- Place of Presentation
  筑波大学総合B棟
- Year and Date
  2010-03-26
- Data Source
  KAKENHI-PROJECT-19380133
[Presentation] 農業用水利用の特性と今後の課題2009
- Author(s)
  佐藤政良
- Organizer
  水資源・環境学会2009年度研究大会
- Place of Presentation
  法政大学
- Year and Date
  2009-06-13
- Data Source
  KAKENHI-PROJECT-19380133
[Presentation] 水田・農業水利から見た水課題2009
- Author(s)
  佐藤政良
- Organizer
  第8回水科学技術基本計画戦略チーム会合講演
- Place of Presentation
  農林水産省特別会議室
- Year and Date
  2009-06-29
- Data Source
  KAKENHI-PROJECT-19380133
[Presentation] ナイル流域における食糧・燃料の持続的生産2009
- Author(s)
  佐藤政良
- Organizer
  農業農村工学会海外事情講演会
- Place of Presentation
  農業土木会館
- Year and Date
  2009-04-09
- Data Source
  KAKENHI-PROJECT-19380133
[Presentation] 韓国における水管理・操作システムの分析2008
- Author(s)
  申文浩, 佐藤政良
- Organizer
  平成20年度農業農村工学会関東支部大会
- Place of Presentation
  長野市若里市民文化ホール
- Year and Date
  2008-10-21
- Data Source
  KAKENHI-PROJECT-19380133
[Presentation] Analysis of Management of Integrated Water User Group-A case study in the Chao Phraya Delta, Thailand2007
- Author(s)
  Vipob Teamsuwan, Masayoshi Satoh, Onimaru Tatsuji, Boonkird Va-son
- Organizer
  平成19年度農業土木学会大会講演会講演要旨
- Place of Presentation
  島根大学(CD-ROM)
- Data Source
  KAKENHI-PROJECT-19380133

1. SAKUMA Taiichi (10133589)

# of Collaborated Projects: 4 results

# of Collaborated Products: 4 results
2. MAITA Hideji (50015864)

# of Collaborated Projects: 3 results

# of Collaborated Products: 0 results
3. SUGIYAMA Hironobu (60015807)

# of Collaborated Projects: 3 results

# of Collaborated Products: 0 results
4. HIROTA Junnichi (00173287)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
5. SUZUKI Mitsukata (40018528)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
6. MIWA Hajime (30107180)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
7. KOIKE Masayuki (60032306)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
8. ISII Atsushi (90222926)

# of Collaborated Projects: 1 results

# of Collaborated Products: 2 results
9. SHIOZAWA Syo (80134154)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
10. YOSHIDA Koshi (20420226)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
11. UCHIDA Koji (10015670)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
12. TADA Atushi (50133012)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
13. OKAMOTO Masami (20011893)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
14. KIMURA Masanobu (30108063)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
15. UMEDA Yasuharu (90001411)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
16. MARUYAMA Toshisuke (90026451)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
17. KURODA Masaharu (50039319)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
18. NIYAMAPA Tan

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
19. BAHALAYODHIN バンショー

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
20. BANSHAW Bahalayodhin

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
21. TANYA Niyamapa

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
22. NIVAMAPA Ton

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
23. VUDHIVANICH バラウト

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
24. PONGSATORN S

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
25. TANYA Niyama

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
26. VARAWOOT Vud

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
27. JESDA Kaewku

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
28. BANSHAW Baha

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results

Satoh Masayoshi 佐藤 政良

SATOH Masayoshi 佐藤 政良

SATO Masayoshi 佐藤 正良

Research Projects

Research Products

Co-Researchers

Common principles of Farmers' Participation in Irrigation Management in Japan and Asian CountriesPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Paddy Water Demand System under Participatory Irrigation ManagementPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Elucidation of causal chains and restoration applying agricultural engineering approaches for watershed degradation to the Lam Phachi River, Thailand

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Adoption of Modern Agricultural Infrastructure in ThailandPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

CASE STUDY OF COMPREHENSIVE MANAGEMENT OF WATERRESOURCES IN DROUGHT PERIODS IN TONE. YODO & YAHAGI RIVER BASINS

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Flood Management at Reservoirs for Irrigation in JapanPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Synthetic evaluation of efficiency in hydrological cycle in large watershed

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

現代における農業用水反復利用の総合的評価に関する研究Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Studies on the development of water management system from the view point of river basin pattern

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Book] 水資源とその配分-農業用水利用の特徴と渇水対応『21世紀水危機-農からの発想』2003

Author(s)

Total Pages

Publisher

Description

Data Source

[Journal Article] Analysis of water management structures of an Integrated Water User Group in the Chao Phraya Delta, Thailand2010

Author(s)

Journal Title

Data Source

[Journal Article] Analysis of water management structures of an Integrated Water User Group in the Chao Phraya Delta, Thailand2010

Author(s)

Journal Title

Data Source

[Journal Article] Comparative analysis of management of three water users' organizations : successful cases in the Chao Phraya Delta, Thailand2009

Author(s)

Journal Title

Data Source

[Journal Article] 水田地帯から排水路への流出量の日内変化についての一考察-茨城県福岡堰地区を対象として-2009

Author(s)

Satoh Masayoshi 佐藤政良

SATOH Masayoshi 佐藤政良

SATO Masayoshi 佐藤正良