Affiliation |
Engineering educational research section Information and Communication Technology Program |
Title |
Professor |
External Link |
OKAZAKI Naonobu
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Degree 【 display / non-display 】
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Doctor (Engineering) ( 1992.3 Tohoku University )
Research Areas 【 display / non-display 】
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Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Communication and network engineering
Papers 【 display / non-display 】
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プロジェクト・スケジュールの遅延リスク分析のための手法の開発 Reviewed
高塚佳代子, 佐藤知一, 油田健太郎, 岡崎直宣
化学工学論文集 2023.9
Authorship:Last author Language:Japanese Publishing type:Research paper (scientific journal)
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Development of keypads which use colors or shapes to prevent shoulder surfing Reviewed
Ryo Masuzawa, Kentaro Aburada, Hisaaki Yamaba, Tetsuro Katayama, Naonobu Okazaki
Artificial Life and Robotics 2023.8
Authorship:Last author Language:English Publishing type:Research paper (scientific journal) Publisher:Artificial Life and Robotics
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Tsunami evacuation simulation considering road width in Aoshima district Reviewed
Keita Nabeyama, Shotaro Usuzaki, Kentaro Aburada, Hisaaki Yamaba, Tetsuro Katayama & Naonobu Okazaki
Artificial Life and Robotics 2023.7
Authorship:Last author Language:English Publishing type:Research paper (scientific journal) Publisher:Artificial Life and Robotics
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Isakwisa Gaddy Tende, Kentaro Aburada, Hisaaki Yamaba, Tetsuro Katayama and Naonobu Okazaki
Agriculture 13 ( 3 ) 627 - 645 2023.3
Authorship:Last author Language:English Publishing type:Research paper (scientific journal) Publisher:Artificial Life and Robotics
Most of the small-scale farmers in Tanzania can’t afford to buy quality agricultural inputs (fertilizers and seeds), therefore the Tanzanian government issues paper-based subsidy vouchers to farmers for buying the inputs at half price. However, challenges like misuse of the vouchers by some government officials (stealing and favoritism in allocation) and lack of trust (difficulty of verifying vouchers’ authenticity) have resulted into low crop productivity for the farmers and loss of government funds. To address this, we have developed agricultural input voucher system which stores and allocates digital subsidy vouchers to farmers in the Hyperledger Fabric blockchain network whose features like hashing and digital signature prevent misuse and ensure trust of the vouchers. Farmers access the digital vouchers through Short Message Service (SMS) in their mobile phones. Evaluation reveals that, the developed system is effective and meets performance demands of Tanzanian farmers. Also, Raft has better performance than Kafka consensus protocol.
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Proposal for a blockchain based agricultural input voucher system Reviewed
Isakwisa Gaddy Tende, Kentaro Aburada, Hisaaki Yamaba, Tetsuro Katayama, Naonobu Okazaki
Artificial Life and Robotics 27 461 - 471 2022.1
Authorship:Last author Language:English Publishing type:Research paper (scientific journal) Publisher:Artificial Life and Robotics
Most of the small-scale farmers in Tanzania can’t afford to buy quality agricultural inputs (fertilizers and seeds), therefore the Tanzanian government issues paper-based subsidy vouchers to farmers for buying the inputs at half price. However, challenges like misuse of the vouchers by some government officials (stealing and favoritism in allocation) and lack of trust (difficulty of verifying vouchers’ authenticity) have resulted into low crop productivity for the farmers and loss of government funds. To address this, we have developed agricultural input voucher system which stores and allocates digital subsidy vouchers to farmers in the Hyperledger Fabric blockchain network whose features like hashing and digital signature prevent misuse and ensure trust of the vouchers. Farmers access the digital vouchers through Short Message Service (SMS) in their mobile phones. Evaluation reveals that, the developed system is effective and meets performance demands of Tanzanian farmers. Also, Raft has better performance than Kafka consensus protocol.
Books 【 display / non-display 】
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ネットワークセキュリティ
関良明,河辺義信,西垣正勝,岡崎美蘭,岡崎直宣,本郷節之,岡田安功( Role: Joint author , 全247頁(分担)142-160頁)
共立出版 2017.9
Language:Japanese Book type:Scholarly book
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コンピュータネットワーク概論
水野忠則,岡崎直宣 他( Role: Joint author , 全269頁(分担)241-260頁)
共立出版 2014.9
Language:Japanese Book type:Scholarly book
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コンピュータ概論
白鳥則郎,岡崎直宣 他( Role: Joint author , 全257頁(分担)172-184頁)
共立出版 2013.1
Language:Japanese Book type:Scholarly book
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コンピュータネットワークの運用と管理補訂版
水野忠則,井手口哲夫,石原進,岡崎直宣( Role: Joint author , 全200頁(分担)35-110頁)
ピアソン・エデュケーション(東京) 2007.10
Language:Japanese Book type:Scholarly book
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コンピュータネットワークの運用と管理
水野忠則,井手口哲夫,石原進,岡崎直宣( Role: Joint author , 全193頁(分担)35-110頁)
ピアソン・エデュケーション(東京) 2002.4
Language:Japanese Book type:Scholarly book
MISC 【 display / non-display 】
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地域通貨を用いたコミュニティ活性化支援システムの試作
小林亜衣,甲斐健太郎,岡崎直宣
宮崎大学工学部紀要 ( 36 ) 251 - 256 2007.8
Language:Japanese Publishing type:Article, review, commentary, editorial, etc. (bulletin of university, research institution) Publisher:宮崎大学工学部
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階層型ネットワークアドレス変換を用いたIP移動透過性の実現手法における安全な通信方式の検討
岡崎直宣,馬着英臣
宮崎大学工学部紀要 ( 36 ) 289 - 296 2007.8
Language:Japanese Publishing type:Article, review, commentary, editorial, etc. (bulletin of university, research institution) Publisher:宮崎大学工学部
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センサネットワークにおけるホップ数に基づくルーティング方式の提案
守田可南子,佐藤雄亮,岡崎直宣
宮崎大学工学部紀要 ( 36 ) 281 - 288 2007.8
Language:Japanese Publishing type:Article, review, commentary, editorial, etc. (bulletin of university, research institution) Publisher:宮崎大学工学部
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アドホックネットワークにおける階層型複数経路構築手法の提案と評価
油田健太郎,高辻慎吾,岡崎直宣
宮崎大学工学部紀要 ( 36 ) 273 - 280 2007.8
Language:Japanese Publishing type:Article, review, commentary, editorial, etc. (bulletin of university, research institution) Publisher:宮崎大学工学部
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センサネットワークにおけるメッセージ認証方式の提案
岡崎直宣,玉里梨香
宮崎大学工学部紀要 ( 36 ) 265 - 272 2007.8
Language:Japanese Publishing type:Article, review, commentary, editorial, etc. (bulletin of university, research institution) Publisher:宮崎大学工学部
Presentations 【 display / non-display 】
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Proposal and implementation of a shoulder-surfing attack resistant authentication method using two shift functions International conference
Yoshihiro Kita, Fumio Sugai, Mirang Park, Naonobu Okazaki
The Second International Conference on Cyber Security, Cyber Peacefare and Digital Forensic (CyberSec2013) (Kuala Lumpur, Malaysia) The Society of Digital Information and Wireless Communications (SDIWC)
Event date: 2013.3.4 - 2013.3.6
Language:English Presentation type:Oral presentation (general)
Venue:Kuala Lumpur, Malaysia
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Proposal of a content access control scheme on a reputation value over P2P networks International conference
Kentaro Aburada, Mirang Park, Masami Ikeda, Hisaaki Yamaba, Naonobu Okazaki
The Sixth International Conference on Mobile Computing and Ubiquitous Networking (ICMU 2012) (Okinawa Japan) Information Processing Society of Japan
Event date: 2012.5.23 - 2013.5.24
Language:English Presentation type:Oral presentation (general)
Venue:Okinawa Japan
Awards 【 display / non-display 】
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Best Paper Award
2017.8 NBiS-2017
Shotaro Usuzaki, Yuki Arikawa, Hisaaki Yamaba, Kentaro Aburada, Shin-ichiro Kubota, Mirang Park, Naonobu Okazaki
Award type:Award from international society, conference, symposium, etc. Country:Japan
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技術賞
2015.4 化学工学会
高塚佳代子,高橋弘季,久保田真一郎,山場久昭,岡崎 直宣
Award type:Award from Japanese society, conference, symposium, etc. Country:Japan
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優秀論文賞
2014.7 情報処理学会
横山 絵美里,宗 裕文,川端 良樹,久保田真一郎,岡崎 直宣
Award type:Award from Japanese society, conference, symposium, etc. Country:Japan
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情報処理学会学会活動貢献賞
2012.3 情報処理学会
岡崎 直宣
Award type:Honored in official journal of a scientific society, scientific journal Country:Japan
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優秀論文賞
2007.7 情報処理学会
油田健太郎,佐藤雄亮,岡崎直宣,冨田重幸,朴 美娘
Award type:Award from Japanese society, conference, symposium, etc. Country:Japan
Grant-in-Aid for Scientific Research 【 display / non-display 】
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DXの急展開に対応する超強靭なパスワード・リスト攻撃防止基盤の確立
Grant number:22K12013 2022.04 - 2025.03
科学研究費補助金 基盤研究(C)
Authorship:Principal investigator
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安全なモバイルクラウドサービス実現のための利用者の環境適応型認証法の提案
Grant number:17H01736 2017.04 - 2020.03
科学研究費補助金 基盤研究(B)
Authorship:Principal investigator
安全なモバイルクラウドサービス実現のための利用者の環境適応型認証法の提案
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プロジェクトマネジメントの応用的研究
Grant number:15K12463 2015.04 - 2019.03
科学研究費補助金 挑戦的萌芽研究
Authorship:Principal investigator
プロジェクトマネジメントの応用的研究 -重要家畜伝染病の防疫活動への適用-
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ユビキタス・センサネットワーキング基盤構築のための高効率・高信頼通信方式の研究
Grant number:20500069 2008.04 - 2011.03
科学研究費補助金 基盤研究(C)
Authorship:Principal investigator
ユビキタス・センサネットワーキング基盤構築のための高効率・高信頼通信方式の研究
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ゼロトラストを実現するための動的なIoTセキュリティ多層アクセス制御基盤の研究
Grant number:23K11089 2023.04 - 2026.03
独立行政法人日本学術振興会 科学研究費補助金 基盤研究(C)
Authorship:Coinvestigator(s)
Available Technology 【 display / non-display 】
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モバイル端末向け個人認証システムの開発
自動プログラムによる遠隔攻撃の対策に関する研究
匿名通信システムに関する研究Message:上記の他、IoT技術の重要な部分を担うセンサネットワークについて、そこで特に求められる信頼性や省電力に注力したネットワーク構築技術などの研究を行っています。