OKAZAKI Naonobu

写真a

Affiliation

Engineering educational research section Information and Communication Technology Program

Title

Professor

External Link

Degree 【 display / non-display

  • Doctor (Engineering) ( 1992.3   Tohoku University )

Research Areas 【 display / non-display

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Communication and network engineering

 

Papers 【 display / non-display

  • Development of a system to detect eye misalignment by using an Arm Cooperative Manipulators HMD equipped with eye-tracking capability Reviewed

    Takatsuka Kayoko, Nagatomo Yoki, Uchida Noriyuki, Ikeda Takuya, Mukunoki Masayuki, Okazaki Naonobu

    Journal of Robotics, Networking and Artificial Life   10 ( 1 )   17 - 24   2023.10

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:ALife Robotics Corporation Ltd.  

    This study aimed to reduce the effect of the examining environment on accuracy by using an eye movement detection system, a VR head-mounted display. We reproduced the inspection environment in a virtual reality environment and performed the cover test, a basic inspection technique for tropia and phoria. We then developed a system that uses eye data collected by eye tracking to detect the directions and magnitudes of eye misalignment. The Maddox method, an existing testing procedure, was used to verify the accuracy. We have confirmed its effectiveness in detecting the directions and magnitudes of horizontal eye misalignment.

    DOI: 10.57417/jrnal.10.1_17

    Scopus

    CiNii Research

  • 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   49 ( 6 )   159 - 165   2023.9

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    Authorship:Last author   Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1252/kakoronbunshu.49.159

  • 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

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Artificial Life and Robotics  

    DOI: 10.1007/s10015-023-00890-y

  • 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

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Artificial Life and Robotics  

    DOI: 10.1007/s10015-023-00888-6

  • Development and Evaluation of a Deep Learning Based System to Predict District-Level Maize Yields in Tanzania Reviewed

    Isakwisa Gaddy Tende, Kentaro Aburada, Hisaaki Yamaba, Tetsuro Katayama and Naonobu Okazaki

    Agriculture   13 ( 3 )   627 - 645   2023.3

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    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.

    DOI: 10.3390/agriculture13030627

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Books 【 display / non-display

  • コンピュータネットワーク概論 第2版

    水野 忠則 , 中村 嘉隆, 田 学軍, 清原 良三, 石原 進, 久保田 真一郎, 岡崎 直宣, 太田 賢 (通信工学), 稲村 浩, 舟阪 淳一, 油田 健太郎( Role: Joint author)

    共立出版  2024.3  ( ISBN:9784320125766

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    Language:Japanese Book type:Textbook, survey, introduction

    CiNii Books

  • 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 

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    Language:Japanese Book type:Scholarly book

  • 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 

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    Language:Japanese Book type:Scholarly book

  • 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 

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    Language:Japanese Book type:Scholarly book

  • 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 

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    Language:Japanese Book type:Scholarly book

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MISC 【 display / non-display

  • Correction to: Proposal and evaluation for color constancy CAPTCHA (Artificial Life and Robotics, (2021), 26, 3, (291-296), 10.1007/s10015-021-00679-x)

    Usuzaki S., Aburada K., Yamaba H., Katayama T., Mukunoki M., Park M., Okazaki N.

    Artificial Life and Robotics   27 ( 1 )   2022.2

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    Publishing type:Rapid communication, short report, research note, etc. (scientific journal)   Publisher:Artificial Life and Robotics  

    In the original publication of the article, on Figs. 4 and 5, “CNN” should read as “MLP”. In addition, under the section “4.2 Human and machine success rate”, on the paragraph “For evaluation of the machine success …”, in the following sentence “In the attack experiment, we applied the famous color …” CNN (Convolutional Neural Network) should be corrected as MLP (Multilayer perceptron). The correct sentence should read as “In the attack experiment, we applied the famous color constancy algorithm, Gray-World, Max-RGB, Gray-Edge [11], Second Derivative Gray-Edge, and MLP (Multilayer perceptron) to images that were saved in the experiment for the human success rate

    DOI: 10.1007/s10015-021-00715-w

    Scopus

  • 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

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (bulletin of university, research institution)   Publisher:宮崎大学工学部  

  • 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

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (bulletin of university, research institution)   Publisher:宮崎大学工学部  

  • 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

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (bulletin of university, research institution)   Publisher:宮崎大学工学部  

  • 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

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    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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Presentations 【 display / non-display

  • 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)

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    Event date: 2013.3.4 - 2013.3.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Kuala Lumpur, Malaysia  

  • 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

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    Event date: 2012.5.23 - 2013.5.24

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Okinawa Japan  

Awards 【 display / non-display

  • Best Paper Award

    2017.8   NBiS-2017  

    Shotaro Usuzaki, Yuki Arikawa, Hisaaki Yamaba, Kentaro Aburada, Shin-ichiro Kubota, Mirang Park, Naonobu Okazaki

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    Award type:Award from international society, conference, symposium, etc.  Country:Japan

  • 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

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  • 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

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  • 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

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    Award type:Honored in official journal of a scientific society, scientific journal  Country:Japan

  • 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

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

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Grant-in-Aid for Scientific Research 【 display / non-display

  • 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)

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    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

    Grant number:17H01736  2017.04 - 2020.03

    科学研究費補助金  基盤研究(B)

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    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

  • 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

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    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-

  • 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)

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    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

  • 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)

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    Authorship:Coinvestigator(s) 

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Available Technology 【 display / non-display