Details of a Researcher - Kawakubo, Shun

Papers - Kawakubo, Shun

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Validation of Energy Simulations for Multi-family Residences with Photovoltaic Power and Gas Cogeneration: Case Study on Balancing Energy Efficiency and Resident Health

Hikari Harasaki, Kan Shindo, Shin-ichi Tanabe, Toru Shiba, Shun Kawakubo, Takashi Akimoto, and Toshiharu Ikaga

Energy and Buildings (Elsevier) 116088 2025.10

Research paper (scientific journal), Joint Work, Accepted

Effects of residential floor-level thermal environment on task performance via psychophysiological responses using multilevel structural equation modeling

Shun Kawakubo, Shiro Arata, Chihiro Suganuma, Yuya Takuwa, Toshiharu Ikaga

Building and Environment (Elsevier) 113416 2025.09

Research paper (scientific journal), Joint Work, Lead author, Corresponding author, Accepted

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Proposal and Case Application of ZEF (net Zero Energy Factory) Based on ZEB Standards for Energy Evaluation in Factories

Kunita SHINDO, Taisuke OKI, Shogo MURAKAMI, Shiro ARATA and Shun KAWAKUBO

Transactions of the Society of Heating,Air-conditioning and Sanitary Engineers of Japan (The Society of Heating, Air-Conditioning & Sanitary Engineers of Japan) 50 ( 340 ) 23 - 30 2025.07

Research paper (scientific journal), Joint Work, Accepted, ISSN 2424-0486

DEVELOPMENT OF AN ONLINE PLATFORM TO SUPPORT LOCAL GOVERNMENTS’ SDG INITIATIVES

Shun Kawakubo, Hayato Imai, Tomoya Asano, Chihiro Nozaki, Yutaro Kimura, Shintaro Ozaki

AIJ Journal of Technology and Design (Architectural Institute of Japan) 31 ( 78 ) 1135 - 1140 2025.06

Research paper (scientific journal), Joint Work, Lead author, Corresponding author, Accepted, ISSN 18818188

The efforts of local governments are essential to achieving the Sustainable Development Goals (SDGs). To support these initiatives, an online platform providing SDG-related information was developed. The platform offers two main functions: searching for and sharing information. Users can search for plans, progress, and exemplary cases related to the SDGs across 1,788 local governments, while local governments can voluntarily share their own exemplary cases. Since its launch in 2018, the platform has been utilized by approximately 400 local governments, facilitating widespread info

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Verification of the effectiveness of automatic optimization control of cold-water supply temperature using image sensors and machine learning

Kunita SHINDO, Taisuke OKI, Wataru Mimura, Shiro ARATA, Naoto TATSUTA and Shun KAWAKUBO

Transactions of the Society of Heating,Air-conditioning and Sanitary Engineers of Japan (The Society of Heating, Air-Conditioning & Sanitary Engineers of Japan) 50 ( 339 ) 19 - 25 2025.06

Research paper (scientific journal), Joint Work, Accepted, ISSN 2424-0486

Causal effects of the residential environment on hypertension, heart disease, and asthma: a cross-lagged panel model from a prospective cohort study

Shiro Arata, Tomomitsu Kamata, Shuzo Murakami, Toshiharu Ikaga, Shun Kawakubo

Building and Environment (Elsevier) 270 112516 2025.02

Research paper (scientific journal), Joint Work, Last author, Accepted

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Key office environment items from post-occupancy evaluation data using item response theory

Shiro Arata, Tomomitsu Kamata, Shuzo Murakami, Toshiharu Ikaga, Yoshihisa Fujino, Yasuyuki Shiraishi, Tatsuya Hayashi, Junta Nakano, Shintaro Ando, Shun Kawakubo

Building and Environment (Elsevier) 270 112519 2025.02

Research paper (scientific journal), Joint Work, Last author, Accepted

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高断熱集合住宅における床チャンバー方式の全館空調が住宅内温熱環境と居住者の健康に及ぼす影響

石井智大, 伊香賀俊治, 川久保俊, 吉田安広, 清田正道, 齊藤共主

Transactions of the Society of Heating,Air-conditioning and Sanitary Engineers of Japan (The Society of Heating, Air-Conditioning & Sanitary Engineers of Japan) 50 ( 334 ) 2025.01

Research paper (scientific journal), Joint Work, Accepted

Comprehensive estimation model for the health economic impact of the residential environment

Tomomitsu Kamata, Junta Nakano, Ryota Fujii, Shuzo Murakami, Toshiharu Ikaga, Shun Kawakubo

Building and Environment (Elsevier) 267 ( C ) 112233 2025.01

Research paper (scientific journal), Joint Work, Last author, Accepted

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Analyzing multiple elements of physical office environment for maximizing perceived work efficiency: Insights from surveys of 58 offices during summer

Masaki Sugiuchi, Shiro Arata, Toshiharu Ikaga, Yasuyuki Shiraishi, Tatsuya Hayashi, Junta Nakano, Shintaro Ando, Shun Kawakubo

Building and Environment (Elsevier) 267 ( A ) 112153 2025.01

Research paper (scientific journal), Joint Work, Last author, Accepted

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Effects of perceived office environment on the subjective well-being of workers: Insights from a structural equation modeling analysis

Shiro Arata, Masaki Sugiuchi, Ryoma Yazawa, Haruki Funatsu, Shun Kawakubo

Building and Environment (Elsevier) 267 ( B ) 112180 2025.01

Research paper (scientific journal), Joint Work, Last author, Accepted

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Survival time analysis of the relationship between the residential environment and residents’ health status

Tomomitsu Kamata, Junta Nakano, Ryota Fujii, Shuzo Murakami, Toshiharu Ikaga, Shun Kawakubo

Building and Environment (Elsevier) 267 ( B ) 112305 2025.01

Research paper (scientific journal), Joint Work, Last author, Accepted

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Office environment and employee differences by company health management certification

Shiro Arata, Masaki Sugiuchi, Toshiharu Ikaga, Yasuyuki Shiraishi, Tatsuya Hayashi, Shintaro Ando, Shun Kawakubo

Building & Cities (ubiquity press) 5 ( 1 ) 723 - 743 2024.12

Research paper (scientific journal), Joint Work, Last author, Accepted

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47都道府県でのプラネタリー・ソーシャルバウンダリー評価の試行

松井孝典, 渡辺舞, 今井隼人, 芳賀智宏, 増原直樹, 川久保俊

環境情報科学論文集 (一般社団法人環境情報科学センター) 38 63 - 70 2024.12

Research paper (scientific journal), Joint Work, Last author, Accepted

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Item response theory in building environment engineering: a novel approach to identifying key residential environment items

Shun Kawakubo, Tomomitsu Kamata, Shiro Arata, Shuzo Murakami, Toshiharu Ikaga, Yoshihisa Fujino, Junta Nakano, Shintaro Ando

Building and Environment (Elsevier) 111764 2024.06

Research paper (scientific journal), Joint Work, Lead author, Corresponding author, Accepted

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THERMAL ENVIRONMENT, ENERGY PERFORMANCE AND SUBJECTIVE EVALUATION BY RESIDENTS OF A HIGHLY INSULATED APARTMENT HOUSE EQUIVALENT TO ZEH STANDARD DURING WINTER

Shiro Arata, Yuto Demizu, Shun Kawakubo, Shizuo Iwase, Takashi Katayama

AIJ Journal of Technology and Design (Architectural Institute of Japan) 30 ( 74 ) 199 - 204 2024.02

Research paper (scientific journal), Joint Work, Accepted, ISSN 18818188

The study analyzes the thermal environment and energy-saving performance of nearly net-zero energy apartments in Japan during winter by measurement and questionnaire. Results show the average indoor temperatures exceeded 18°C even without air conditioning, due to superior insulation performance. Energy consumption for heating was 58.9% to 62.9% of the national average, and residents perceived their homes as warmer, leading to lower temperature settings of air-conditioner. However, there were several challenges, such as the low ratings by residents of non-heated rooms during winter.

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An Analysis of Nexus Structure of Sustainable Development Goals by Data-Driven Approach

松井孝典, 安藤魁呂, 今井隼人, 芳賀智宏, 岩見麻子, 増原直樹, 川久保俊

環境情報科学論文集 (一般社団法人環境情報科学センター) ceis37 (0) 78 - 85 2023.12

Research paper (scientific journal), Joint Work, Last author, Accepted

本研究ではデータ駆動アプローチによって</tt>SDGs <tt>のグローバル目標とターゲットの連環であるネクサス構造を分析した。</tt>SDGs <tt>ローカル指標、</tt>SDGs <tt>未来都市計画を対象に、スパースモデリングやネットワーク分析の技術を適用することでネクサス構造を帰納的に推論して可視化した。その結果、現状の日本の</tt>SDGs <tt>のグローバル目標とターゲットには特徴を持ったネクサス構造があること、日本の</tt>SDGs <tt>の状態を表す顕示データであるローカル</tt>SDGs <tt>指標による推論されるネクサス構造とこれから</tt>SDGs <tt>未来都市が行おうとしている計画の選好データに見られるネクサス構造は異なる傾向を持つことを示した。これらの知見は、シナジー・トレードオフ構造を理解した上でのセクターを超えた包摂的な計画立案、パートナーシップの形成への示唆を与えると期待される

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A Study on Incorporation and Priority Goals of Local SDGs Policy Based on Planning Documents and Interview Survey

増原直樹, 岩見麻子, 熊澤輝一, 鈴木隆志, 松井孝典, 川久保俊

環境情報科学論文集 (一般社団法人環境情報科学センター) ceis37 (0) 46 - 51 2023.12

Research paper (scientific journal), Joint Work, Last author, Accepted

日本全国のSDGs 未来都市について，154 の未来都市計画の内容分析と15 の自治体担当者を対象とした聞取り調査結果を基に，SDGs 政策の重点ゴールの変化，総合計画におけるSDGs 対応の手法，庁内外への普及啓発の現状とSDGs 推進上の課題を明らかにした。SDGs 担当課だけでなく行政各課もSDGs マッピングの作成過程に参加することで普及啓発のねらいがあると考察されたほか，先行研究と比較したところ未来都市における課題と一般的な自治体における課題には異なるところがあり，先進的に取り組んでいるが故に生じる課題がいくつかの未来都市で明らかになった。

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Investigation of the usefulness of newspaper article analysis of topics related to SDGs to grasp trends

岩見麻子, 後藤侑哉, 増原直樹, 松井孝典, 川久保俊

環境情報科学論文集 (一般社団法人環境情報科学センター) ceis37 (0) 175 - 180 2023.12

Research paper (scientific journal), Joint Work, Last author, Accepted

本研究では</tt>SDGs <tt>に関する話題の動向を把握する方法として，新聞記事に対するテキストマイニングの有用性を検討することを目的とした。具体的には朝日新聞を対象に「</tt>SDGs<tt>」が含まれる記事を収集し，対象記事の件数や分量の時系列推移を把握するとともに，出現語の関係性の可視化を試みた。その結果，</tt>SDGs <tt>が採択された当初の</tt>2015<tt>・</tt>2016 <tt>年は</tt>SDGs <tt>の紹介や全球規模の問題について扱われていたのに対して，</tt>2017 <tt>年以降はそれらの話題を残しつつ徐々に</tt>SDGs <tt>の達成に向けて活用が期待される技術や国内の地域レベルの問題，自治体・企業・学校での具体的な事例・取り組みへと話題が変化していったことを明らかにすることができ，</tt>SDGs <tt>に関する話題の動向を把握する方法として，新聞記事に対するテキストマイニングの有用性を示すことができた

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Visualization of urban roadway surface temperature by applying deep learning to infrared images from mobile measurements

Kawakubo S., Arata S., Demizu Y., Kamata T., Narumi D., Asawa T., Ihara T.

Sustainable Cities and Society (Sustainable Cities and Society) 99 2023.12

Accepted, ISSN 22106707

Urban heat islands (UHIs) have been worsening, and Tokyo, Japan, is among the worst globally. The urban thermal environment requires measurement to formulate effective countermeasures. This study proposes a method for detecting roadways from infrared images of captured by a moving automobile and using deep learning to extract roadway surface temperatures from the detected roadways. Additionally, a roadway surface temperature map of Tokyo was created from 17,000 infrared images covering a route of 37 km and was then used to identify hotter and cooler areas of the city in order to validate the proposed methodology. The surface temperatures were high on wide roadways with a high sky view factor, but were lower and less variable in street canyons. Roadways perpendicular to the solar azimuth had lower temperatures due to shading by buildings. The accuracy of deep learning to detect roadway was imperfect, but a significant improvement in analytical efficiency was achieved. The method could also be applied to three-dimensional evaluation of urban surface temperatures by extracting surface temperatures for various city components, such as buildings and vegetation.

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Maximizing worker potential: a comprehensive analysis of the workplace environment and personality factors that affect subjective productivity in simple tasks and creative activities

Arata S., Kawakubo S.

Intelligent Buildings International (Intelligent Buildings International) 15 ( 3 ) 93 - 108 2023.12

ISSN 17508975

The impact on productivity of working from home is unclear. This study explores how the residential environment and personal attributes influence subjective productivity during winter. Indoor temperature and relative humidity were measured, and a questionnaire survey was conducted to gather information on subjective productivity, work type, work style, and personality traits. Results from 198 respondents indicated that productivity in simple tasks increased with the frequency of working from home. In addition, workers in better residential environments were 1.76 times more likely to exhibit higher productivity in simple tasks compared with those in poorer residential environments. Therefore, improving the residential environment, including temperature and humidity control, is critical to enhance productivity in simple tasks. However, workers who worked from home every day had a 0.47 times lower probability of exhibiting greater creative productivity compared with those who went to the office at least once a week, suggesting a decline in creative productivity for fully remote workers. Thus, a combination of office and remote work would be expected to increase overall productivity. Subjective productivity also varied depending on personality traits. The findings suggest that to improve productivity, workplace policies should allow for flexibility in customizing work environments according to tasks and personalities.

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Economic benefits of the effects of office environment on perceived work efficiency and presenteeism

Arata S., Sugiuchi M., Ikaga T., Shiraishi Y., Hayashi T., Ando S., Kawakubo S.

Building and Environment (Building and Environment) 243 2023.09

Research paper (scientific journal), Joint Work, Accepted, ISSN 03601323

s hubs of intellectual activity, offices are expected to promote work efficiency and support worker health. Many studies have analyzed the relationship of the office environment with work efficiency and the health of workers. However, few studies have compared the effects of various elements of the office environment on these outcomes and their economic benefits. To address this limitation, this study investigated the impact of various environmental elements on both work efficiency and health, and analyzed the economic benefits of optimizing these elements in office spaces. The impacts of each element of the office environment on work efficiency and worker health were analyzed for 1644 workers in 29 office buildings in Tokyo, Japan. Economic benefits were estimated by comparing perceived work efficiency to an ideal office and presenteeism to the absence of health-related barriers. The results showed that the office interior and furnishings provided the largest estimated economic benefits, followed by overall building sanitation and HVAC airflow. These elements produced economic benefits associated with high perceived work efficiency. The largest estimated economic benefits associated with low presenteeism was from desk lighting, which was the fourth largest economic benefit overall. The results suggest that healthy offices require not only improvements but also the removal of negative elements. These findings are expected to contribute to the realization of comfortable, healthy offices.

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Office thermal environment that maximizes workers’ thermal comfort and productivity

Kawakubo S., Sugiuchi M., Arata S.

Building and Environment (Building and Environment) 233 2023.04

Research paper (scientific journal), Joint Work, Accepted, ISSN 03601323

Previous studies investigating the relationship between indoor environmental quality and worker productivity have suggested that thermal environment has a significant impact on worker productivity. Some of these studies reported that productivity was less than optimal when the environment was thermally neutral and comfortable (i.e., PMV = 0.0). However, the analyses in those studies did not consider personal attributes, and the data hierarchy resulting from the multiple responses of survey participants was also not considered. Thus, there is no consensus on the optimal temperature for worker productivity. In this study, a measurement survey and questionnaire survey were conducted to assess worker productivity in a thermally neutral and slightly cool environment while considering the personal attributes of workers. The survey was conducted with air conditioning set to PMV = 0.0 and −0.5 for 2 weeks during late spring in Tokyo, Japan. The results of a multilevel analysis considering data hierarchy revealed that the relationship between thermal sensation and productivity differed according to gender. Men were most productive when it was cooler than thermally neutral (thermal sensation = −0.61, between “−1. slightly cool” and “0. neutral”), while women were most productive when it was warmer than thermally neutral (thermal sensation = 0.23, between “0. neutral” and “1. slightly warm”). The relationship between thermal satisfaction and productivity suggests that there may be a difference in thermal sensation that maximizes productivity and thermal satisfaction. This study provides new knowledge regarding the office thermal environment that maximizes worker productivity and thermal satisfaction.

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VISUALIZATION OF INDOOR THERMAL ENVIRONMENT IN A HIGHLY INSULATED APARTMENT HOUSE EQUIVALENT TO ZEH STANDARD BY UNSTEADY CFD ANALYSIS IN WINTER

荒田史朗, 川久保俊, 岩瀬静雄, 花多山隆士

AIJ Journal of Technology and Design (Architectural Institute of Japan) 28 ( 70 ) 1313 - 1318 2022.10

Research paper (scientific journal), Joint Work, Corresponding author, Accepted, ISSN 1341-9463

In recent years, ZEH has been drawing attention as a house that achieves a net zero annual energy consumption. In the present study, an unsteady 48-hour CFD analysis in winter was conducted to visualize the thermal environment of Nearly ZEH-M. The results showed that Nearly ZEH-M had a good thermal environment, exceeding the recommended minimum temperature range of 18°C, even in rooms without air conditioner running. It was also found that even with high insulation performance, thermal environments differed slightly by dwelling unit locations.

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Influence of residential performance on residents' health status (part II): Nationwide survey of environmental performance of apartment buildings and residents' health status

Kawakubo S., Kamata T., Murakami S., Ikaga T., Hoshi T., Ando S.

Japan Architectural Review (Wiley) 5 ( 4 ) 576 - 591 2022.10

Research paper (scientific journal)

The residential environment clearly affects health. For example, a previous study has established relationships between specific environmental factors and the health status of residents in detached houses. However, studies focused on apartment buildings are still insufficient. Therefore, in this study, a large nationwide questionnaire survey of residents of apartments was conducted. The residential environment was subjectively evaluated using a Japanese Comprehensive Assessment System for Built Environment Efficiency (CASBEE) tool: the CASBEE Health Checklist. The results showed that residents living in apartments who score higher on the checklist tend to have a lower prevalence of various diseases, indicating that residential environment may be an important determinant of health. Furthermore, the odds ratios for residents living in apartment buildings were lower for diabetes mellitus, hypertensive diseases, heart diseases, cerebrovascular diseases, chronic lower respiratory diseases, and inflammatory polyarthropathies compared with residents living in detached houses. These findings support the general link between the residential environment and residents' health and suggest that housing typology is an important factor.

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Exploring the role of local governments as intermediaries to facilitate partnerships for the Sustainable Development Goals

Masuda H., Kawakubo S., Okitasari M., Morita K.

Sustainable Cities and Society (Elsevier) 82 2022.07

Research paper (scientific journal), Joint Work, Accepted, ISSN 22106707

Implementation of the Sustainable Development Goals (SDGs) requires localization and multi-stakeholder partnerships, and local governments have the best potential to act as intermediaries to facilitate partnerships. This study examines how local governments have facilitated partnerships for the SDGs, especially partnerships with private sectors. It focuses on how local governments conducted their intermediary roles from the perspective of sustainable transitions and analyzes Japanese cases. The results of our analysis provide the following suggestions for local governments to enhance their intermediary roles to facilitate partnerships for the SDGs. First, the SDGs should be recognized as a driver of sustainable transitions. Second, there needs a balance in terms of the level of the public sector's involvement in partnerships, so that local governments can maximize the benefits of informal networks in relation to SDG localization. Third, new intermediaries can be created by local governments. The findings of this study contribute to the growing body of literature on SDG localization and partnerships by identifying possible roles and suggestions that local governments can adopt as transition intermediaries.

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Study on productivity of office workers and power consumption of air conditioners in a mixed-mode ventilation building during springtime

Arata S., Kawakubo S.

Building and Environment (Elsevier) 214 2022.04

Research paper (scientific journal), Joint Work, Accepted, ISSN 03601323

The thermal environment in offices affects the productivity of workers; thus, it is important to adjust the thermal environment appropriately with heating, ventilation, and air conditioning. However, there is an urgent need to reduce the amount of energy used in the building sector for cooling, which has been rising. Mixed-mode ventilation has attracted attention as a means of decreasing air conditioning power consumption and improving the satisfaction of office workers. In the present study, a measurement survey and a questionnaire survey were conducted during springtime to investigate air conditioning power consumption during mixed-mode ventilation and to elucidate the relationship between the use of mixed-mode ventilation and productivity. The power consumption on the mixed-mode ventilation floors was less than that on the mechanical ventilation floors in the measurement period when the average outdoor air temperature was 21 °C, with savings ranging from 3.1% to 70.6%, although it varied widely with the weather conditions. The relationship between the use of mixed-mode ventilation and productivity was analyzed using multilevel analysis (hierarchical linear model), a method that considers the data hierarchy. Mixed-mode ventilation improved the productivity of male participants by about 9.1%, suggesting that mixed-mode ventilation could both decrease air conditioning power consumption and improve productivity during springtime. However, the increase in productivity of female participants was about 0.5%, indicating that there may be differences depending on gender. The present study has practical implications for promoting mixed-mode ventilation as a means to reduce air conditioning power consumption in offices and improve productivity.

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Quantitative Evaluation of the Contributions of Improved Housing Performances Toward Delivering Sustainable Development Goals by a Building Energy Simulation Tool

Serikawa M., Satoh M., Umishio W., Kawakubo S., Nakano J., Akimoto T., Ikaga T., Murakami S.

Sustainable Cities and Society (Elsevier) 79 2022.04

Research paper (scientific journal), Joint Work, Accepted, ISSN 22106707

In 2015, the 2030 Agenda for Sustainable Development Goals (SDGs) was adopted by all United Nations Member States. The indoor environment of residences affects the health of occupants regarding SDG 3 (Good Health and Well-being). Meanwhile, a vast amount of energy is used to supply power to houses worldwide, which emit sufficient volumes of CO2 and affect climate change regarding SDG 7 (Affordable and Clean Energy) and SDG 13 (Climate Action). A key step to delivering on these SDGs is improving the thermal insulation of houses and housing equipment performance to reduce energy consumption and protect the health of the occupants by improving the indoor environment. This study presents an evaluation method for quantifying the contribution of improving housing performance toward delivering the SDGs. The proposed approach is primarily based on the results of heat load simulations. Meanwhile, blood pressure is predicted as an indicator of health by using the interior environment obtained by the simulation. A case study was performed, and the results demonstrated the effectiveness of improving the housing performance of newly constructed houses compared to heating and retrofit. The proposed method is versatile and can be adjusted for application to alternative locations, house designs, and lifestyles.

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Study on residential environment and workers’ personality traits on productivity while working from home

Kawakubo S., Arata S.

Building and Environment (Elsevier) 212 2022.03

Research paper (scientific journal), Joint Work, Accepted, ISSN 03601323

Working from home has drawn more attention with the development of information and communications technology and the coronavirus disease 2019 pandemic. Although studies on working from home have been conducted in various academic fields, few have focused on residential environment and personality traits. In the present study, air temperature and humidity of the home workplace were measured and a questionnaire survey was conducted to understand the relationship between residential environment and personality traits and at-home work productivity. The results suggest that comprehensive productivity while working from home improved. However, when examining individual aspects of productivity, the productivity of information processing improved while that of knowledge processing and knowledge creation deteriorated. The results also suggest the importance of improving the residential environment when working from home because productivity while working from home rather than from the office improved with high evaluation of the residential environment. Moreover, productivity decreased for workers with high neuroticism and increased for those with high openness or perseverance and passion, suggesting that some personality traits are more or less suitable for working from home. To improve the productivity of all workers, these findings have practical implications for promoting appropriate maintenance of the residential environment and introducing flexible work styles that account for personality traits.

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A natural language processing model for supporting sustainable development goals: translating semantics, visualizing nexus, and connecting stakeholders

Matsui T., Suzuki K., Ando K., Kitai Y., Haga C., Masuhara N., Kawakubo S.

Sustainability Science (Springer Nature) 17 ( 3 ) 969 - 985 2022.02

Research paper (scientific journal), Joint Work, Accepted, ISSN 18624065

Sharing successful practices with other stakeholders is important for achieving SDGs. In this study, with a deep-learning natural language processing model, bidirectional encoder representations from transformers (BERT), the authors aimed to build (1) a classifier that enables semantic mapping of practices and issues in the SDGs context, (2) a visualizing method of SDGs nexus based on co-occurrence of goals (3) a matchmaking process between local issues and initiatives that may embody solutions. A data frame was built using documents published by official organizations and multi-labels corresponding to SDGs. A pretrained Japanese BERT model was fine-tuned on a multi-label text classification task, while nested cross-validation was conducted to optimize the hyperparameters and estimate cross-validation accuracy. A system was then developed to visualize the co-occurrence of SDGs and to couple the stakeholders by evaluating embedded vectors of local challenges and solutions. The paper concludes with a discussion of four future perspectives to improve the natural language processing system. This intelligent information system is expected to help stakeholders take action to achieve the sustainable development goals.

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集合住宅の環境性能における消費者の重要度評価 : CASBEE評価基準に対する消費者意識分析

髙田秀之, 吉田好邦, 川久保俊

日本不動産学会誌 (公益社団法人日本不動産学会) 35 ( 3 ) 74 - 80 2021.12

Research paper (scientific journal), Joint Work, Last author, Accepted, ISSN 09113576

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SDGs mainstreaming at the local level: case studies from Japan

Masuda H., Okitasari M., Morita K., Katramiz T., Shimizu H., Kawakubo S., Kataoka Y.

Sustainability Science (Springer Nature) 16 ( 5 ) 1539 - 1562 2021.09

Research paper (scientific journal), Joint Work, Accepted, ISSN 18624065

There has been increasing interest in local-level implementation of the United Nations 2030 Agenda for Sustainable Development and its Sustainable Development Goals (SDGs). Despite the emergence of various initiatives undertaken by local governments, studies on the process of mainstreaming the 2030 Agenda within local contexts remain limited. This study is aimed at identifying possible approaches for supporting local governments in successfully mainstreaming the 2030 Agenda and the SDGs. We developed an analytical framework covering key components for local-level mainstreaming of the SDGs based on our review of recent policy guidelines for implementing the SDGs and the policy integration and coherence literature. Subsequently, we applied this framework within case studies of two designated municipalities under the Japanese government’s “SDGs Future Cities” initiative aimed at localizing the SDGs. The analysis demonstrated how local governments could develop and apply key components of the SDGs mainstreaming process. Our findings suggest that the following approaches can facilitate local governments’ efforts to mainstream the SDGs: first, municipalities can foster local ownership to address the challenges they face. Second, existing policy resources can be linked with formal procedures. Third, multi-stakeholder partnerships can be developed. Fourth, vertical communication channels can be established with international and national-level organizations. Overall, the article contributes to a growing literature on SDGs implementation at the local level by identifying key components required for their mainstreaming, introducing perspectives derived from Japanese case studies.

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Economic impact of environmental efficiency on sales price and used transaction price of apartment buildings empirical analysis using the assessment data of CASBEE Yokohama

Takada H., Yoshida Y., Kawakubo S., Yamaguchi A.

Japan Architectural Review (Japan Architectural Review) 4 ( 2 ) 313 - 319 2021.04

Research paper (scientific journal), Joint Work, Accepted, ISSN 24758876

The aim of this study is to analyze the effects of environmental efficiency of buildings on real estate prices. Therefore, based on the Comprehensive Assessment System for Built Environment Efficiency (CASBEE) of the local government, we investigated 485 apartment buildings assessed by CASBEE Yokohama. The analysis results revealed the following three points: <jats:list> <jats:list-item><jats:p>When the Built Environment Efficiency (BEE) value increased by one point, the average unit price increased by 5.5%.</jats:p></jats:list-item> <jats:list-item><jats:p>A one‐point increase in the BEE value has a positive impact of 1.63% on the annual rate of change of used transaction price.</jats:p></jats:list-item> <jats:list-item><jats:p>It is economically advantageous to purchase an apartment building with a high BEE value when considering future sales.

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環境性能が集合住宅の販売価格及び中古取引価格に与える影響　CASBEE横浜の評価結果を用いた実証分析

高田秀之, 吉田好邦, 川久保俊, 山口歩太

日本建築学会環境系論文集 (一般社団法人日本建築学会) ( 767 ) 89 - 95 2020.01

Research paper (scientific journal), Joint Work, Accepted

CFD ANALYSIS CONSIDERING REGIONAL TOPOGRAPHY AND MEASUREMENT OF THERMAL ENVIRONMENT IN GASSHO-STYLE HOUSES IN SHIRAKAWA VILLAGE

Yuki Ogawa, Kiyotaka Deguchi, Shun Kawakubo, Tsubasa Okaze

AIJ Journal of Technology and Design (Architectural Institute of Japan) 84 ( 763 ) 865 - 872 2019.09

Research paper (scientific journal), Joint Work, Accepted, ISSN 1348-0685

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RESEARCH ON IMPLEMENTATION LEVEL OF THE SUSTAINABLE DEVELOPMENT GOALS (SDGs) IN JAPANESE LOCAL GOVERNMENTS

Shun Kawakubo, Shuzo Murakami, Akiko Chujo

AIJ Journal of Technology and Design (Architectural Institute of Japan) 24 ( 58 ) 1125 - 1128 2018.10

Research paper (scientific journal), Joint Work, Lead author, Corresponding author, Accepted, ISSN 1341-9463

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Influence of residential performance on residents’ health status: Nationwide survey of environmental performance of detached houses and residents’ health status

Shun Kawakubo, Toshiharu Ikaga, Shuzo Murakami, Tanji Hoshi, Shintaro Ando

International Journal of Japan Architectural Review for Engineering and Design (JAR) (Wiley) 1 ( 2 ) 271 - 279 2018.01

Research paper (scientific journal), Joint Work, Lead author, Accepted, ISSN 2475-8876

Sustainability assessment of cities: SDGs and GHG emissions

Shun Kawakubo, Shuzo Murakami, Toshiharu Ikaga, Yasushi Asami

Building Research and Information (Taylor & Francis ) 46 ( 5 ) 528 - 539 2017.08

Research paper (scientific journal), Joint Work, Lead author, Accepted, ISSN 1466-4321

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Resilience Assessment of Major Japanese Cities Based on Public Statistical Information

川久保俊、田中充、馬場健司

環境科学会誌 (日本環境学会) 30 ( 3 ) 215 - 224 2017.05

Research paper (scientific journal), Joint Work, Lead author, Accepted, ISSN 18845029

災害や各種リスクに対応し得るレジリエントな都市の実現を目指すにあたり，目標達成に向けた進捗状況の把握，課題の発見は極めて重要なプロセスである。この際に適切な指標を設定し，公開されている統計情報に基づきながら都市のレジリエンス性を推計することができれば，人的，物的，時間的コストを抑えつつ，実態の把握が可能となることからその有用性は高い。そこで，本研究では都市のレジリエンス性を測るための指標群（都市レジリエンス性評価指標）を開発し，その適用可能性の検証を行うことを目的として，日本の大都市のレジリエンス性の評価を実施した。都市レジリエンス性評価指標の開発に際して，はじめに各省庁の基幹統計や大都市比較統計年表等の公開統計情報の精査を行いつつ，都市のレジリエンス性を測定し得る指標の候補をリストアップした。続いて，①データの収集容易性，②データの信頼性，③指標の代表性，④地域普遍性，⑤政策適用性等の基準を全て満たす指標のみを残し，最終的に18個の指標を都市レジリエンス性評価指標として選定した。さらに東京都区部および政令指定都市に関する公開統計情報を収集した上で検証的主成分分析を実施し，その結果に基づいて18個の都市レジリエンス性評価指標を統合し，各都市の予防力，順応力，転換力を評価するための統合評価指標を開発した。そして三つの統合評価指標を用いて日本の大都市のレジリエンス性評価を実施し，各都市の実態や特徴を明らかにした。

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学生の着座位置と講義中の心理状態に関する時空間統計解析 -階段教室における温熱環境が学生の心理と集中力に及ぼす影響その2-

佐藤直哉, 川久保俊, 出口清孝

日本建築学会環境系論文集 (日本建築学会) 81 ( 729 ) 961 - 969 2016.11

Research paper (scientific journal), Joint Work, Accepted, ISSN 1348-0685

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EFFECTS OF TERRACED CLASSROOM THERMAL ENVIRONMENT ON STUDENTS' PSYCHOLOGICAL SENSATIONSAND CONCENTRATION LEVELS<br>- Spatiotemporal analysis through measurements, CFD analysis, and questionnaire survey -

佐藤直哉, 川久保俊, 出口清孝

日本建築学会環境系論文集 (日本建築学会) 80 ( 710 ) 339 - 349 2015.04

Research paper (scientific journal), Joint Work, Accepted, ISSN 1348-0685

The study examined the effects of the thermal environment in a terraced classroom on students' psychological sensations and concentration. The classroom thermal environment was continuously measured during 90-min lectures in May 2013. Students were asked to complete a questionnaire on their psychological sensations and concentration every 15 min during the lectures. Objective measurement data and subjective questionnaire data were analyzed. Results show that spatiotemporal heterogeneity of the classroom thermal environment was likely an important factor in students' psychological sensations and concentration.

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環境配慮建築物の性能とその地域特性に関する研究－横浜市の集合住宅におけるCASBEE届出データの地理空間分析－

鈴木悠太, 川久保俊, 出口清孝

日本建築学会環境系論文集 (日本建築学会) 80 ( 710 ) 359 - 369 2015.04

Research paper (scientific journal), Joint Work, Accepted, ISSN 1348-0685

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INFLUENCE OF RESIDENTIAL PERFORMANCE ON RESIDENTS' HEALTH PROMOTION

川久保俊 , 伊香賀俊治 , 村上周三 , 星旦二 , 安藤真太朗

日本建築学会環境系論文集 (日本建築学会) 79 ( 700 ) 555 - 561 2014.06

Research paper (scientific journal), Joint Work, Lead author, Accepted, ISSN 1881-817X

Previous studies have revealed relationships between specific residential environmental factors and residents' health status. However, no previous study has considered the comprehensive health risk due to overall residential environment. Therefore, a large-scale nationwide questionnaire survey was conducted using CASBEE Health Checklist to examine the residential environment of detached houses and residents' health status. Results show that overall residential environment was likely an important determinant of health and was associated with disease prevalence among residents.

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QUESTIONNAIRE-BASED VALIDATION OF ENVIRONMENTAL PERFORMANCE ASSESSMENT TOOL FOR MUNICIPALITIES

川久保俊 , 伊香賀俊治 , 村上周三

日本建築学会環境系論文集 (日本建築学会) 78 ( 693 ) 883 - 892 2013.11

Research paper (scientific journal), Joint Work, Lead author, Accepted, ISSN 1881-817X

CASBEE-City, a comprehensive environmental assessment tool for municipalities (cities, towns, and villages), was developed to support citizens, local governments, and other stakeholders in understanding their local conditions. In this study, the aim was to examine the tool's practical effectiveness through a nationwide questionnaire survey. The statistical relationship was analyzed between the subjective assessment results (citizens' satisfaction with local conditions) and the objective CASBEE-City assessment results, which are based on public statistical information. A clear relationship was found between the subjective and objective assessment results for municipalities, thus verifying the tool's effectiveness.

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VISUALIZATION OF DISASTER RECOVERY PROCESS BASED ON A TIME-SERIES ASSESSMENT OF URBAN ENVIRONMENT

川久保俊 , 伊香賀俊治 , 村上周三

日本建築学会技術報告集 (日本建築学会) 19 ( 43 ) 1011 - 1016 2013.10

Research paper (scientific journal), Joint Work, Lead author, Accepted, ISSN 1341-9463

A time-series assessment of urban environment was carried out by using “CASBEE-City” tool in Kobe city to visualize the disaster recovery process. As a result of the assessment, it was revealed that the score for quality of Kobe city calculated by the tool got drastically worse soon after the Great Hanshin-Awaji Earthquake in 1995. However, the score for quality of Kobe city has gradually recovered after the earthquake and has improved to the current position along with the progress of the reconstruction.

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DEVELOPMENT OF AN ENVIRONMENTAL PERFORMANCE ASSESSMENT TOOL FOR MUNICIPALITIES INCORPORATING DATABASE AND GIS APPLICATION

川久保俊 , 伊香賀俊治 , 村上周三

日本建築学会技術報告集 (日本建築学会) 19 ( 43 ) 1023 - 1026 2013.10

Research paper (scientific journal), Joint Work, Lead author, Accepted, ISSN 1341-9463

Environmental performance assessment tool for municipalities (CASBEE-City) has been developed and upgraded since 2008. The tool automatically queries the database and extracts the necessary data for conducting the nationwide municipality assessment. The tool also incorporates GIS functionality and enables tool users to understand the conditions, strengths, and weaknesses of their municipalities in comparison with other municipalities in Japan by visualizing the assessment results on easy-to-understand maps.

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DEVELOPMENT OF A SUGGESTION TOOL FOR ENERGY-SAVING ACTIONS BASED ON THE ANALYSIS OF RESIDENTS’ BEHAVIORS AND ENERGY CONSUMPTION

富越大介 , 伊香賀俊治 , 川久保俊 , 藤崎浩太

日本建築学会技術報告集 (日本建築学会) 19 ( 42 ) 655 - 660 2013.06

Research paper (scientific journal), Joint Work, Accepted, ISSN 1341-9463

It is important to promote energy-saving actions toward the reduction of CO2 emissions in residential sector. Residents should understand the actual conditions of energy consumption in their home in order to make energy-saving actions more effective. Therefore, in this research, a tool which suggests effective energy-saving actions was developed based on literature research and questionnaire survey. A workshop was conducted in Kawasaki City. Then, the residents received the information of their actual energy usage and effective energy-saving actions suggested by the aforementioned tool. As a result, 6.4% of CO2 reduction was achieved.

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CROSS-CULTURAL PARTICIPATORY STUDY ON PREFERRED PUBLIC SPACES

アルマザンホルへ, 平子雪乃, 鈴木美央, ムミノヴィッチミリッツァ, 井上岳, 川久保俊

日本建築学会環境系論文集 (一般社団法人日本建築学会) 78 ( 686 ) 807 - 816 2013.04

Research paper (scientific journal), Joint Work

MODELING OF DIFFUSION PROCESS OF WELL INSULATED HOUSE THROUGH PRESENTING ENERGY BENEFITS AND NON-ENERGY BENEFITS

藤崎浩太, 伊香賀俊治, 川久保俊, 富越大介

日本建築学会技術報告集（2013） (一般社団法人日本建築学会) 19 ( 41 ) 231 - 236 2013.02

Research paper (scientific journal), Joint Work, Accepted, ISSN 18818188

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ENVIRONMENTAL PERFORMANCE ASSESSMENT OF MUNICIPALITIES WITH THE “CASBEE-CITY” TOOL

川久保俊 , 伊香賀俊治 , 村上周三 , 浅見泰司

日本建築学会環境系論文集 (日本建築学会) 78 ( 683 ) 63 - 72 2013.01

Research paper (scientific journal), Joint Work, Lead author, Accepted, ISSN 1348-0685

A comprehensive, nationwide assessment of whole municipalities in Japan was conducted using the Comprehensive Assessment System for Built Environment Efficiency (CASBEE) tool specifically designed for city level assessment (CASBEE-City). As with other tools in the CASBEE family, CASBEE-City is also based on the concept of environmental efficiency and calculates the value for built environment efficiency (BEE). In this study, BEE is calculated by using public statistical information and visually displayed on a map through a geographic information system (GIS) to understand the current situation of all municipalities in Japan under the same assessment criteria (same assessment items, thresholds and rating functions).

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健康維持増進に向けた地域環境評価ツールの開発と有効性の検証

出口満 , 伊香賀俊治 , 村上周三 , 白石靖幸 , 星旦二 , 加藤龍一 , 川久保俊 , 安藤真太朗

日本建築学会環境系論文集 77 ( 681 ) 837 - 846 2012.11

Research paper (scientific journal), Joint Work, Accepted, ISSN 1348-0685

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CROSS-CULTURAL EVALUATION OF PUBLIC SPACE QUALITIES: Re-imagining the Urban Identity of Alicante City

Jorge Almazan , Mio Suzuki , Yukino Tairako , Shun Kawakubo , Gaku Inoue

日本建築学会計画系論文集 77 ( 680 ) 2379 - 2388 2012.10

Research paper (scientific journal), Joint Work, Accepted, ISSN 1881-8161

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教室環境の質が児童の体調と集中力に与える影響に関する実態調査

柳井悠希 , 伊香賀俊治 , 川久保俊

日本建築学会環境系論文集 77 ( 676 ) 533 - 539 2012.06

Research paper (scientific journal), Joint Work, Last author, Accepted, ISSN 1881-817X

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多重指標モデルの構築に基づく青壮年期・高齢期住民の健康に関する階層構造分析－住宅と地域環境における健康形成構造の地域間比較－

安藤真太朗 , 伊香賀俊治 , 白石靖幸 , 星旦二 , 川村健一 , 川久保俊 , 大重和恵

日本建築学会環境系論文集 77 ( 675 ) 389 - 397 2012.05

Research paper (scientific journal), Joint Work, Accepted, ISSN 1881-817X

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非住宅建築物の用途別、都道府県別のストック・フロー床面積データベースの構築

奥村公美 , 伊香賀俊治 , 川久保俊

日本建築学会技術報告集 18 ( 38 ) 275 - 280 2012.02

Research paper (scientific journal), Joint Work, Last author, Accepted, ISSN 1341-9463

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Nationwide Assessment of City Performance Based on Environmental Efficiency

Shun Kawakubo, Toshiharu Ikaga, Shuzo Murakami

International Journal of Sustainable Building Technology and Urban Development (Taylor & Francis ) 2 ( 4 ) 293 - 301 2011.12

Research paper (scientific journal), Joint Work, Lead author, Corresponding author, Accepted, ISSN 2093-7628

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戸建住宅主の意思決定構造を考慮した低炭素技術普及率予測モデルの開発

出口満 , 伊香賀俊治 , 川久保俊 , 奥村公美

日本建築学会技術報告集 17 ( 37 ) 949 - 954 2011.10

Research paper (scientific journal), Joint Work, Accepted, ISSN 1341-9463

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健康維持がもたらす間接的便益（NEB）を考慮した住宅断熱の投資評価

伊香賀俊治 , 江口里佳 , 村上周三 , 岩前篤 , 星旦二 , 水石仁 , 川久保俊 , 奥村公美

日本建築学会環境系論文集 76 ( 666 ) 735 - 740 2011.08

Research paper (scientific journal), Joint Work, Accepted, ISSN 1348-0685

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Development of a comprehensive city assessment tool: CASBEE-City

Shuzo Murakami , Shun Kawakubo , Yasushi Asami , Toshiharu Ikaga , Nobuhaya Yamaguchi , Shinichi Kaburagi

BUILDING RESEARCH AND INFORMATION (TAYLOR & FRANCIS LTD) 39 ( 3 ) 195 - 210 2011.04

Research paper (scientific journal), Joint Work, Accepted, ISSN 0961-3218

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都市の総合環境性能評価ツールCASBEE都市の開発－評価システムの理念と枠組み

村上周三 , 川久保俊 , 浅見泰司 , 伊香賀俊治 , 山口信逸 , 蕪木伸一

日本建築学会技術報告集 17 ( 35 ) 239 - 244 2011.02

Research paper (scientific journal), Joint Work, Accepted, ISSN 1341-9463

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社会情勢の変化を考慮した小規模市町村のCO2削減ポテンシャルの推計

川久保俊 , 伊香賀俊治 , 村上周三

日本建築学会技術報告集 16 ( 33 ) 595 - 600 2010.06

Research paper (scientific journal), Joint Work, Lead author, Accepted, ISSN 1341-9463

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持続可能な都市の形成に向けた海外の評価ツールに関する調査研究

川久保俊 , 伊香賀俊治 , 村上周三

日本建築学会技術報告集 16 ( 33 ) 601 - 604 2010.06

Research paper (scientific journal), Joint Work, Lead author, Accepted, ISSN 1341-9463

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