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Affiliation |
Faculty of Urban Innovation, Division of Urban Innovation |
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Job Title |
Associate Professor |
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Research Fields, Keywords |
City Planning, Urban Design |
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Mail Address |
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YABUKI Ken-ichi
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Education 【 display / non-display 】
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2015.4-2018.3
The University of Tokyo Doctor Course Completed
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2010.4-2012.3
The University of Tokyo Master Course Completed
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2006.4-2010.3
University of Tsukuba Graduated
Degree 【 display / non-display 】
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Doctor of Engineering - The University of Tokyo
Campus Career 【 display / non-display 】
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2022.10
Duty Yokohama National UniversityFaculty of Urban Innovation Division of Urban Innovation Associate Professor
External Career 【 display / non-display 】
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2021.4-2022.9
The University of Tokyo Research Center for Advanced Science and Technology Project Research Associate
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2019.4-2021.3
Kobe Design University Department of Environmental Design Assistant Professor
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2012.4-2015.5
KUME SEKKEI Co. Ltd.
Academic Society Affiliations 【 display / non-display 】
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2012
The City Planning Institute of Japan
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2010
Architectural Institute of Japan
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2019
Association of Urban Housing Sciences
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2012
Japan Association for Real Estate Sciences
Research Areas 【 display / non-display 】
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Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Architectural and city planning / City Planning
Books 【 display / non-display 】
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アーバンデザインノート 15の実践に学ぶ都市の空間計画
前田 英寿・遠藤 新・野原 卓・阿部 大輔・黒瀬 武史・中尾 俊幸・倉澤 聡・三牧 浩也・中島 伸・佐藤 敦・矢吹 剣一 著（ Role： Joint author）
彰国社
Language：Japanese Book type：Textbook, survey, introduction
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ネイバーフッド・マネジメント 実践に学ぶ担い手・場・仕組みづくり
齊藤 広子 （編著） 佐藤 元 （編著） 柴田 建 （編著） 長谷川 洋 （編著） 藤井 さやか （編著） 矢吹 剣一 （編著） 入江 智子 （著） 奥河 洋介 （著） 熊谷 玄 （著） 酒谷 粋将 （著） 藤原 真名美 （著） 宝楽 陸寛 （著） 本家 豊大 （著） 山田 尚之 （著） 吉田 啓助 （著） 住総研「郊外住宅地のネイバーフッドマネジメント」研究委員会 （ Role： Joint author）
学芸出版社
Language：Japanese Book type：Textbook, survey, introduction
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都市を学ぶ人のためのキーワード事典 : これからを見通すテーマ24
饗庭 伸 , 矢吹 剣一 （ Role： Joint author）
学芸出版社 （ ISBN:9784761528706 ）
Language：Japanese Book type：Scholarly book
Papers 【 display / non-display 】
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A study on the process and actual conditions of converting multiple streets into plazas in Portland, Oregon, U.S.
Okumura Maki, Nohara Taku, Yabuki Ken-ichi, Morita Ayaka, Matsuyuki Mihoko
Journal of the City Planning Institute of Japan 60 ( 3 ) 1138 - 1145 2025 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The City Planning Institute of Japan Joint Work
<p>This study examines Portland's Public Street Plaza Program (PSPP), focusing on the factors and spatial realities behind the rapid conversion of streets into plazas during the pandemic. Through literature review and field research, the study identified key factors: (1) pilot programs for assessing plaza suitability, (2) reversibility allowing roads to return to vehicle use, (3) easy-to-install and remove furniture, (4) a bottom-up process initiated by local residents and businesses, and (5) a clear division of roles between PBOT and local stakeholders. The plazas function as community hubs, but challenges remain in balancing public and commercial use, requiring ongoing efforts to address these issues.</p>
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A Study on the Development of Agile Urban Space Management Triggered by the COVID-19 Pandemic
Morita Ayaka, Yabuki Ken-ichi, Nohara Taku, Okumura Maki
Journal of the City Planning Institute of Japan 60 ( 3 ) 1162 - 1169 2025 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The City Planning Institute of Japan Joint Work
<p>In recent years, the utilization of public space has gained attention as a strategy for urban revitalization, highlighting the need for flexible, agile urban management. This study examines the institutional evolution in New York City from the temporary “Open Restaurant” system introduced during the COVID-19 pandemic to the permanent “Dining Out” program. Focusing on three programs―Sidewalk Café, Open Restaurant, and Dining Out―we analyzed official documents, literature, and citizen feedback from NYC311 and online platforms. The findings reveal that NYC responded rapidly to crisis conditions while continuously updating rules through participatory input. This case illustrates the effectiveness of agile urban management in unpredictable times and offers valuable insights for other cities facing similar challenges.</p>
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Study on the Actual Situation of Non-residential Land Uses Located in Residential-Only Areas
Matsumoto Nozomi, Nohara Taku, Yabuki Ken-ichi, Yoon Jangshik
Journal of the City Planning Institute of Japan 59 ( 3 ) 651 - 658 2024.10 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The City Planning Institute of Japan Joint Work
<p>Sasuke area in Kamakura City has a variety of non-residential buildings, even though this area is designated as a First- Class Low-Rise Residential Zone. These buildings often reflect the identity of their owners and the community, with a recent trend showing a rise in both their numbers and types of use. Despite the absence of district plans or regulations, Sasuke area hasn't experienced notable neighborhood troubles. This is likely due to owners managing their properties and operations as residents. In a First-Class Low-Rise Residential Zone, the building regulations typically require mixed-use residences for non-residential purposes, making the relationship between operators and the community crucial. This dynamic may contribute to balancing the charm of a quiet residential area with the diversity of uses.</p>
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Takai Yuki, Nohara Taku, Yabuki Kenichi, Yoon Jangshik
Journal of the City Planning Institute of Japan 59 ( 3 ) 1131 - 1138 2024.10 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The City Planning Institute of Japan Joint Work
<p>To promote the establishment of civic green spaces, it is important to establish effective management methods, such as maintenance and management by residents. However, it has become clear that there are challenges in securing manpower. This study was conducted to clarify effective measures for expanding management by residents focusing on Nerima Ward, where measures were implemented to increase the number of people responsible for the management, by interviewing local governments and maintenance organizations. it was found that, because of the municipality's broad-based recruitment efforts, new groups, mainly of the younger generation, began to participate with a variety of objectives. In addition, as the number of groups increased, the local government implemented support in an ingenious way despite manpower constraints.</p>
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Study on the process and factors of development of multiple community bases
Morita Ayaka, Nohara Taku, Yoon Jangshik, Yabuki Ken-ichi
Journal of the City Planning Institute of Japan 59 ( 3 ) 643 - 650 2024.10 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The City Planning Institute of Japan Joint Work
<p>Recently, population aging and the weakening of local communities in the suburbs is problems, and there is a demand for the establishment of community bases where local residents can participate in community activities. This study focuses on Musashishinjo area to clarify the process and factors behind the establishment of multiple community bases. Through interviews with the places and related groups, following conclusions were obtained. Their establishment involved collaboration from five key entities: land/building owners who envisioned creating communal spaces, operators seeking community engagement, architect adapting spaces for public use, proactive users driving activities, and supporters providing project management and funding. This cooperative effort led to the opening of multiple community bases, fostering regional community development.</p>
Review Papers 【 display / non-display 】
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矢吹剣一
すまいろん ( 114 ) 36 - 39 2024.2
Authorship：Lead author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (other) Single Work
Awards 【 display / non-display 】
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第5回 博士論文賞
2020.6 住総研
Individual or group name of awards：矢吹剣一
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都市住宅学会賞研究奨励賞
2019.10 都市住宅学会
Individual or group name of awards：矢吹剣一
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第17回 2019年度 研究・実践選奨 奨励賞
2019.6 住総研
Individual or group name of awards：矢吹剣一・黒瀬武史
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論文奨励賞
2019.4 日本都市計画学会
Individual or group name of awards：矢吹剣一
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湯浅賞（研究奨励賞／博士論文部門）
2018.11 日本不動産学会
Individual or group name of awards：矢吹剣一
Grant-in-Aid for Scientific Research 【 display / non-display 】
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都市の趨勢に応じたダウンゾーニング技術の体系化
Grant number：24K17414 2024.4 - 2027.3
Grant-in-Aid for Early-Career Scientists
Authorship：Principal investigator Grant type：Competitive
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人口減少に対応したダウンゾーニングの合意形成と計画技術
Grant number：19K15166 2019.4 - 2023.3
Grant-in-Aid for Early-Career Scientists
Authorship：Principal investigator Grant type：Competitive
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人口減少社会における再開発ビルの持続的更新に関する研究
Grant number：25K01398 2025.4 - 2029.3
Grant-in-Aid for Scientific Research(B)
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戦略と戦術を往来するアジャイル（応答）型都市デザインマネジメント手法の構築
Grant number：23H01581 2023.4 - 2026.3
Grant-in-Aid for Scientific Research(B)
Authorship：Coinvestigator(s) Grant type：Competitive
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人口減少・生活様式の変化に対応した商業地域の再編手法
Grant number：22K04504 2022.4 - 2025.3
Grant-in-Aid for Scientific Research(C)
Authorship：Coinvestigator(s) Grant type：Competitive
Other external funds procured 【 display / non-display 】
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人口減少都市シンポジウム2023
2023.4 - 2024.3
Private Foundations 国際研究集会援助
Authorship：Principal investigator
Presentations 【 display / non-display 】
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東日本大震災の復興におけるトレイルの市街地通過状況と復興事業との関係 みちのく潮風トレイルを対象として
田中 もも・野原 卓・尹 莊植・矢吹 剣一
日本建築学会大会（九州） 2025.9 日本建築学会
Event date： 2025.9
Language：Japanese Presentation type：Oral presentation (general)
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近代までに形成された谷戸の景観要素の残存度に関する研究 横浜市釜利谷地区・永田地区をケーススタディとして
田中 遼太郎・野原 卓・矢吹 剣一・尹 莊植
日本建築学会大会（九州） 2025.9 日本建築学会
Event date： 2025.9
Language：Japanese Presentation type：Oral presentation (general)
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地域産業廃業後の産業景観の転用についての研究 ―たたら製鉄業で栄えた島根県奥出雲町の鉄穴流し跡を対象として―
岩本 なつみ・野原 卓・尹 莊植・矢吹 剣一
日本建築学会大会（九州） 2025.9 日本建築学会
Event date： 2025.9
Language：Japanese Presentation type：Oral presentation (general)
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外部民間事業者と地域とともにつくる地域再生ビジネスの仕組みと事業展開に関する研究 NIPPONIA事業の取組に着目して
張 叡・野原 卓・尹 莊植・矢吹 剣一
日本建築学会大会（九州） 2025.9 日本建築学会
Event date： 2025.9
Language：Japanese Presentation type：Oral presentation (general)
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用途の限定されていない空き地空間の利用実態 HELLO GARDENにおけるマネジメントと活動に着目して
大木 諒音・野原 卓・尹 莊植・矢吹 剣一
日本建築学会大会（九州） 2025.9 日本建築学会
Event date： 2025.9
Language：Japanese Presentation type：Oral presentation (general)
Charge of on-campus class subject 【 display / non-display 】
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2026 Globalized Local Studies
Liberal Arts Education
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2026 Urban Management
Graduate School of Urban Innovation
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2026 Globalized Local Studies
Graduate School of Urban Innovation
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2026 Environmental Urban Design Studio S
Graduate School of Urban Innovation
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2026 Environmental Urban Design Studio F
Graduate School of Urban Innovation
Committee Memberships 【 display / non-display 】
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日本建築学会論文集委員会 委員
2024.4
Committee type：Academic society
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日本建築学会空き地から構想する都市戦略小委員会 委員
2023.4
Committee type：Academic society
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横浜市土地利用審査会 委員
2023.3
Committee type：Municipal
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坂井市 歴史まちづくり推進協議会 委員
2022.10 - 2024.3
Committee type：Municipal
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日本建築学会技術報告集委員会 委員
2022.6 - 2024.5
Committee type：Academic society
Social Contribution(Extension lecture) 【 display / non-display 】
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YNUアーバニストスクールプログラム2025
Role(s)： Lecturer, Logistic support
横浜国立大学大学院都市イノベーション学府・研究院 2025.10 - 2025.12
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YNUアーバニストスクールプログラム2024
Role(s)： Lecturer, Logistic support
横浜国立大学大学院都市イノベーション学府・研究院 2024.10 - 2024.12
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YNUアーバニストスクールプログラム2023
Role(s)： Lecturer, Logistic support
横浜国立大学大学院都市イノベーション学府・研究院 2023.10 - 2023.12
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YNUアーバニストスクールプログラム2022
Role(s)： Lecturer, Logistic support
横浜国立大学大学院都市イノベーション学府・研究院 2022.10 - 2022.12