In October 2020, Prime Minister Suga declared that by 2050, Japan will be carbon-free. Attaining Japan’s sustainable future will depend on making many critical decisions: Which technological innovations are the most important for a more sustainable materials, energy, and environmental sector? What elements of policy and regulation are crucial to the success of a sustainable future? Which is better equipped to implement these policies: government or industry? What is the business of sustainability - when does it make sense to implement these policies, when does it not, and how can you / should you make a profit from sustainability programs?
This special two-part webinar series for Japanese ILP members will explore how MIT and its community of researchers and startups companies are leading the way in sustainability research. Also joining us during these webinars will be special guests, Japanese ILP members MITSUI MINING & SMELTING CO., LTD. and Ajinomoto Inc., who will share insights from their corporate sustainability programs. This webinar will be broadcast in the Japanese language, and will feature live Q&A with our faculty and Japanese corporate speakers.
This webinar will be conducted in Japanese as a primary language but English is available by selecting the language. Participation of members from other countries, especially Asian countries, is also welcome.
This event is for ILP members and the MIT community. You can confirm your company's ILP membership here: https://ilp-mit-edu.ezproxy.canberra.edu.au/search/members.
2020年10月、菅首相は2050年までにカーボンニュートラル、脱炭素社会の実現を目指すことを宣言しました。日本における持続可能な未来の達成は、これからの多くの重要な決断が鍵となります。より持続可能な材料、エネルギー、環境セクターにとって、最も重要な技術革新とは?持続可能な未来に向けて、政策において重要なことは?そうした政策を実行するのにより適任なのは、政府と業界のどちらか?政策を実行するのはいつが最適で、そうでないのはいつか?ビジネスにおける持続可能性とは?そして持続可能性プログラムからどのように利益を得ることができるか?
二日間にわたる日本のILPメンバー企業向けのウェビナーシリーズでは、MITとその研究者およびスタートアップ企業のコミュニティが、どのようにして持続可能性に関する研究をリードしているのかを探ります。さらに今回は特別に、ILPメンバー企業の三井金属鉱業株式会社(1日目)、味の素株式会社(2日目)からそれぞれゲストをお迎えし、各社のサスティナビリティにおける取り組みをご講演いただきます。このウェビナーは、収録講演(日本語吹替)をご視聴いただき、講演者との質疑応答はライブで行われます(同日通訳がございます)。
第一言語は日本語で行われますが、言語を選択することで英語でもご視聴いただけます。世界各国の皆様のご参加を歓迎いたします。
ALL DATES/ TIMES LISTED BELOW ARE JAPAN STANDARD TIME (GMT +9)
We are offering Zoom based simultaneous translation service for this conference.
In order to use simultaneous translation feature during Zoom webinar, you will need the version of Zoom that is higher than version 5.2.1. If you do not already have this version, please update your Zoom client/application before joining the discussion. Follow the instructions here to update Zoom.
Please visit Language interpretation in meetings and webinars on Zoom for more details.
Keiji Yano is a program director at MIT Corporate Relations and associate director of MIT-ILP, Japan in Tokyo. He has been associated with the office since September 2008 and has been enjoying connecting Japanese ILP member companies with the MIT community since then. He has been always fascinated by the risks companies are willing to take to make an impact in society.
Prior to joining the ILP, Yano managed his own consulting company while he was a visiting researcher at the MIT Whitehead Institute for three years. Prior to that, he was the technical area manager for the Asia/Pacific region at Coventor, an MIT-connected startup software company developing MEMS. While at Coventor he established many relationships with companies from all over the world. He provided services to help companies design and build prototypes for new devices or products. He started his career as a process engineer in the basic design group from concept design to preoperation test of the Nuclear Waste plant project for Tokai #2 Nuclear Power Plant in Japan.
He holds a B.S. in science and technology from Nihon University and Ph.D. in Fluid Dynamics in Aerospace Engineering from the Ohio State University.
Professor John E. Fernández is a professor in the Department of Architecture at MIT, affiliated with the Department of Urban Studies and Planning, and a practicing architect. Fernández is also Director of the Massachusetts Institute of Technology Environmental Solutions Initiative, enlisting the capacity of the MIT community in the transition to a net zero carbon, biodiverse and equitable future.
Fernández founded and currently directs the MIT Urban Metabolism Group and is a member of the World Economic Forum Global Commission on BiodiverCities by 2030, the Urban Climate Change Research Network, and the Leadership Team of Oceanvisions. He has published on a wide range of subjects, from sustainable cities, urban biodiversity, design, and more, and is the author of two books and numerous articles in scientific and design journals, including Science, the Journal of Industrial Ecology, Building and Environment, Energy Policy and others, and author of nine book chapters. He is formerly Chair of Sustainable Urban Systems for the International Society of Industrial Ecology and Director of the MIT Building Technology Program from 2010 to 2015.
Today we are at the brink of an accelerating climate crisis while half the world lives in cities and rates of biodiversity loss and deforestation are at historic highs. We are also in a golden era of scientific and engineering breakthroughs and technology and market innovation. From advances in artificial intelligence to carbon capture we may be witnessing the emergence of a transformation of society and industry toward a sustainable, equitable and humane future. Prof. Fernandez will describe the mandate and work of MIT’s primary environmental organization charged with creating solutions to climate change and other environmental challenges. The work of the ESI leverages key capacity of the entire MIT faculty, student body and staff across diverse topics in research, education and engagement. The expansion of the ESI bodes well for MIT’s ever more targeted role in a sustainable future. In this mission we hope to partner with you.
1985 - Completed the Department of Materials Development Engineering, Graduate School of Science and Engineering (current Interdisciplinary Graduate School of Engineering Sciences, Kyushu University). Doctor of Engineering.
2014 - Director, Functional Materials Research Institute (current R&D Center), Mitsui Mining & Smelting Co., Ltd.
2017 - Fellow, up to the present. He is engaged in the development of catalyst materials, oxide semiconductor materials, inorganic optical materials, and solid ionics materials.
The purpose of my talk is to introduce Mitsui Mining & Smelting's efforts toward a sustainable society. I will explain the relationship between our social activities and SDGs, CSR, and ESG. As an initiative for renewable energies, we are focusing on the hydroelectric power generation business and the geothermal power generation business. As of recently in our developments for a sustainable society, we will introduce new oxygen ion conductor and a safe sulfide all-solid-state battery.
InEnTec: Gasifier technology that safely transforms waste into clean fuels and other valuable products
Jeff Surma is President and CEO of InEnTec Inc. Jeff and his colleagues founded InEnTec Inc. to commercialize a new plasma technology developed while conducting research at the MIT Plasma Fusion Center. Jeff began his career at the Pacific Northwest National Laboratory where he directed multi-million dollar research efforts in the areas of electrochemical and high temperature plasma processing of waste materials. Jeff has been granted 44 US patents and has won the prestigious R&D 100 award four times for his work on plasma processing and associated technologies. Jeff holds a B.S. in Chemistry from the University of Minnesota and a M.S. in Chemical Engineering from Montana State University.
Renewlogy: Innovative solutions for renewing waste and creating circular economies
Priyanka Bakaya is the Founder & CEO at Renewlogy, a technology leader in developing innovative solutions for renewing waste and creating circular economies. Across multiple facilities, they convert hard-to-recycle plastics into higher value products. Bakaya previously worked at Venture Capital firms Accel Partners and Globespan Capital, after starting her career in energy and technology investing on Wall Street. Bakaya has also served as the Chairman for the American Chemistry Council’s Advanced Recycling Alliance for Plastics, and serves as an ongoing coach for MIT’s Global Entrepreneurship Bootcamps.
Bakaya is a World Economic Forum Young Global Leader, a Lightspeed Venture Fellow and a Laureate for the Cartier Women’s Global Initiative. She has been named to the Fortune 40 under 40 Ones to Watch List, Conscious Company’s Top 30 Social Entrepreneurs, and Forbes 30 under 30 List in Energy. She is a graduate of MIT Sloan and Stanford University with Honors.
Karthish Manthiram is the Theodore T. Miller Career Development Chair and Assistant Professor in Chemical Engineering at MIT. The Manthiram Lab at MIT is focused on the molecular engineering of electrocatalysts for the synthesis of organic molecules, including pharmaceuticals, fuels, and commodity chemicals, using renewable feedstocks. Karthish received his bachelor’s degree in Chemical Engineering from Stanford University and his Ph.D. in Chemical Engineering from UC Berkeley, where his dissertation research was focused on the development of nanoscale materials for storing solar energy in chemical bonds. Most recently, he was a postdoctoral researcher at the California Institute of Technology, where he worked on developing new ionically-conductive polymers using olefin metathesis. Karthish’s research has been recognized with several awards, including the NSF CAREER Award, DOE Early Career Award, 3M Nontenured Faculty Award, American Chemical Society PRF New Investigator Award, Dan Cubicciotti Award of the Electrochemical Society, and Forbes 30 Under 30 in Science. Karthish’s teaching has been recognized with the C. Michael Mohr Outstanding Undergraduate Teaching Award, the MIT ChemE Outstanding Graduate Teaching Award, and the MIT Teaching with Digital Technology Award. He serves on the Early Career Advisory Board for ACS Catalysis and on the Advisory Board for both Trends in Chemistry and the MIT Science Policy Review.
Chemical synthesis is responsible for significant emissions of carbon dioxide worldwide. Using renewable electricity to drive chemical synthesis may provide a route to overcoming the carbon footprint, by enabling synthetic routes which operate at benign conditions and utilize sustainable inputs. We are developing an electrosynthetic toolkit in which distributed feedstocks, including carbon dioxide, dinitrogen, water, and renewable electricity, can be converted into diverse fuels, chemicals, and materials. In this presentation, we will first share recent advances made in our laboratory on nitrogen fixation to synthesize ammonia at ambient conditions. We will then discuss how to drive selective carbon dioxide reduction and use water as an oxygen-atom source for epoxidation reactions. These example reactions will illustrate how the modularity of chemical manufacturing could be enhanced through electrochemical routes which open up local and on-demand production of critical chemicals and materials.
フェルナンデス教授は、MITの建築学科建築技術プログラムの教授であると同時に建築家としても活動しています。フェルナンデス教授は、都市の資源集約度と将来の都市化のための設計および技術経路に焦点を当てた、非常に多くの専門分野に関わる研究グループであるthe MIT Urban Metabolism Groupを設立し、指揮しています。彼はthe MIT Environmental Solutions Initiative(低炭素で人道的な未来への過渡期にMITコミュニティの能力を発揮させるための主要な組織)のディレクターでもあります。2冊の著書があり、またScience、Journal of Industrial Ecology、Building and Environment、Energy Policyなどを含む科学およびデザインジャーナルの多数の記事を投稿し、9冊の本の章の著者です。彼は、Sustainable Urban Systems for the International Society of Industrial Ecologyの議長を務め、the journal Sustainable Cities and Societyの副編集長です。
今、私たちは気候危機の加速という局面を迎えようとしています。同時に世界の半分が都市部で暮らすようになり、生物多様性喪失と森林破壊がかつてない速さで進んでいます。さらに、私たちは科学・工学の飛躍的進歩、技術・市場のイノベーションの黄金期を生きています。人工知能の進歩から炭素回収まで、私たちは持続可能で、公平で、思いやりのある未来へと向かう社会・産業の変革の生起を目の当たりにしているのかもしれません。ESIはMITの主要な環境機関として、気候変動その他の環境問題の解決策を見出すという使命を帯びています。そのESIの任務と活動についてフェルナンデス教授が説明します。ESIの活動は、研究・教育・エンゲージメントの多岐にわたるテーマにおいて、MICの教授陣、学生団体、職員全体が持つ貴重な能力を活用しています。ESIの拡大は、持続可能な未来においてMITが果たす役割がますます注目されるという意味で大変喜ばしいことです。私たちは、皆様と手を携えてこのミッションを進めたいと考えています。
1985年に九州大学大学院総合理工学研究科材料開発工学を修了(現・総合理工学府)、博士号取得。2014年より三井金属鉱業株式会社機能材料研究所(現・総合研究所)の所長を務め、2017年に現職であるフェローに就任。現在も、触媒材料、酸化物半導体材料、無機光学材料、固体アイオニクス材料の開発に携わっています。
今回の講演では、持続可能な社会に向けた三井金属鉱業の取り組みを紹介します。さらに我が社の社会活動とSDGs、CSR、ESGとの関係について説明します。現在、再生可能エネルギーの取り組みとして、水力発電事業と地熱発電事業に力を入れています。持続可能な社会のために開発中の、新しい酸素イオン伝導体と安全な硫化物全固体電池を紹介します。
InEnTec: 廃棄物をクリーンな燃料やその他の価値ある製品に安全に変換するガス装置の技術
Renewlogy: 廃棄物を再生し、経済の循環を作り上げるための革新的なソリューション
マンシラム教授は、the Theodore T. Miller Career Developmentの委員長であり、MITの化学工学の助教授です。 MITのManthiram Labは、再生可能な原料を使用して、医薬品、燃料、汎用化学物質などの有機分子を合成するための電気触媒の分子工学に焦点を当てています。 マンシラム教授は、スタンフォード大学で化学工学の学士号を取得し、カリフォルニア大学バークレー校で化学工学の博士号を取得の際の論文研究は、化学結合に太陽エネルギーを貯蔵するためのナノスケール材料の開発に焦点を当てていました。最近では、カリフォルニア工科大学のポスドク研究員として、olefin metathesisを使用した新しいイオン伝導性ポリマーの開発に取り組みました。 マンシラム教授の研究は、NSF CAREER賞、DOE Early Career Award、3M Nontenured Faculty Award、American Chemical Society PRF New Investigator Award、Dan Cubicciotti Award of the Electrochemical Society、Forbes 30 Under 30 in Scienceなどで認められ、彼の教えは、Michael Mohr優秀学部教育賞、MIT ChemE優秀大学院教育賞、およびMIT Teaching with Digital Technology Awardで高く評価されています。彼は、ACS CatalysisのEarly Career Advisory Boardと、Trends in ChemistryとMIT Science Policy Reviewの両方の諮問委員会の委員を務めています。
化学合成は世界中で大量の二酸化炭素排出を引き起こしています。化学合成の進行に再生可能電力を利用すれば、無害な条件で機能し、持続可能なインプットを活用する合成経路が可能になり、カーボンフットプリントを取り除く道が開けるかもしれません。私たちは、二酸化炭素、二窒素、水、再生可能電力などの分散している原料を多様な燃料、化学製品、素材に転換できる電気合成ツールキットを開発中です。このプレゼンテーションでは、まず、常温常圧でアンモニアを合成するための窒素固定に関する当研究所の最新の研究成果を紹介します。次に、選択的二酸化炭素還元を活発化させ、エポキシ化反応の原子状酸素源として水を利用する方法について論じます。これらの反応例は、重要な化学品と素材の現地生産やオンデマンド生産を可能にする電気化学的方法によって化学品製造のモジュール性をどのように高められるかを示します。
Yossi Sheffi is an expert in systems optimization, risk analysis and supply chain management. He is author of a text book and seven award-winning management books. His latest books are: “The New Abnormal: Reshaping Business and Supply Chain Strategy Beyond Covid-19,” (October 1, 2020) and “A Shot in the Arm: How Science, Technology and Supply Chains Converged to Vaccinate the World (October 2021).
Under his leadership, MIT CTL has launched many educational, research, and industry/government outreach programs, including the MIT SCALE network involving six academic centers round the world. In 2015, CTL has launched the on-line Micromaster’s program, enrolling over 480,000 students in 196 countries.
Outside the institute, Dr. Sheffi has consulted with numerous organizations. He has also founded or co-founded five successful companies, all acquired later by large enterprises.
Dr. Sheffi has been recognized in numerous ways in academic and industry forums and won dozens of awards.
He obtained his B.Sc from the Technion in Israel in 1975, and SM and Ph.D. from MIT in 1978.
For more information visit: http://sheffi.mit.edu.ezproxy.canberra.edu.au/
Despite the increasing evidence of climate change and its growing consequences, green promises have outpaced green actions. Most consumers, companies, and governments have made only minor, incremental changes to their behavior. Even the promised changes, if actually enacted, are at best ineffective and at worst will ensure that the planet continues on its current destructive path. The addition of billions of developing countries consumers to the world’s idle class is likely to doom any small changes. My argument is that while current efforts should continue, the solution is technology for carbon sequestrations and storage (it the green movement will still stall the development of nuclear plants).
After joining the Ajinomoto, Ms.Yukiko Takatori was engaged in R&D and Development -Marketing of Seasonings, Processed food, Supplement for athletes followed by General Manager of SHANGHAI AJINOMOTO FOOD R AND D CENTER CO., LTD. She was in charge of science communication in the Ajinomoto Group, prior to the current position since 2020.
As food and health issues are diversified, by unlocking the power of amino acids, Ajinomoto Group aim to contributes to greater wellness and improving the dietary habits for people worldwide. We are developing business in more than 130 countries and regions. We have a social responsibility to contribute to the development of the region, while respecting diverse cultures, values and human rights. In addition, our business activities are supported by many resources and energy, we must improve the environmental burden throughout the value chain, including reducing greenhouse gas emissions.
We updated our vision for 2030 last year. We want to achieve sustainability through our business with the goals of " By 2030 help extend the healthy life expectancy of 1 billion people" and "By 2030 reduce the environmental impact by 50%." My talk will be Introducing our ideas and initiatives aimed at contributing to a healthy mind and body, a recycling-oriented society, and a diverse and prosperous society.
Sourcemap: Supply chain transparency platform
Dr. Leonardo Bonanni is the founder and CEO of Sourcemap, the supply chain transparency platform. Leading brands and manufacturers use Sourcemap software to trace their products to the source and ensure that corporate standards are met every step of the way, including zero-deforestation, zero-child labor, and the highest standards for raw materials such as recycled, fair trade and organic. You can see Timberland and The North Face, Mars and Hershey, all publishing their Sourcemap-verified supply chains on open.sourcemap.com, the world's largest supply chain disclosure website. Leo developed Sourcemap as part of his PhD at the MIT Media Lab and has been named among America's 100 Most Influential People in Business Ethics and America's Most Promising Social Entrepreneurs.
Via Separations - Membrane platform that transforms industrial separations by improving filtration materials and reducing energy
Dr. Brent Keller is the Co-Founder & CTO of Via Separations, a start-up working to intensify manufacturing, and eliminate the energy used in industry. Via was recognized as one of C&EN’s 10 startups to watch in 2019, and has received awards from ARPA-E, NSF, and MassCEC. Brent was awarded Forbes 30 under 30 in 2018. He holds a Ph.D. in Materials Science and Engineering from MIT, 4 patents pending, and has been published in 6 scientific publications.
Co-Director, MIT Climate and Sustainability Consortium Jerry McAfee (1940) Professor, Department of Materials Science and Engineering Associate Dean, MIT School of Engineering
Professor Olivetti received a BS in engineering science from the University of Virginia in 2000, and a PhD in materials science and engineering from MIT in 2007. She spent her PhD program studying the electrochemistry of polymer and inorganic materials for electrodes in lithium-ion batteries. In 2014, she joined DMSE as an assistant professor. As an educator, Olivetti overhauled DMSE’s undergraduate curriculum and developed new courses, including one for the MIT Climate and Sustainability Consortium Climate Scholars. She’s a member of the MIT Climate Nucleus and co-director of the MIT Climate & Sustainability Consortium.
Professor Elsa Olivetti’s research focuses on improving the environmental and economic sustainability of materials. Specifically, she develops analytical and computational models to provide early-stage information on the cost and environmental impact of materials. Professor Olivetti and her research-group colleagues work toward improving sustainability through increased use of recycled and renewable materials, recycling-friendly material design, and intelligent waste disposition. The Olivetti Group also focuses on understanding the implications of substitution, dematerialization, and waste mining on materials markets.
Environmental benefits attributed to recycling rely on the assumption that we are substituting energy intensive primary production for lower-impact secondary production. However, this argument tends to be a purely engineering lens on a complex socioeconomic system. This presentation will discuss whether closing material and product loops does, in fact, prevent primary production. The basis for this counter argument is that when secondary replaces primary, it decreases the price of secondary and thus more primary will switch to secondary if possible, causing primary price to drop, and driving up demand for more primary which may negate the potential for substitution. There is a strong parallel in this argument to the concept of energy efficiency rebound, and is also referred to as the potential for secondary material to displace primary production. The critical aspects that influence displacement are the ability of secondary products to substitute for primary products, and price effects. This presentation will describe tools and analytical modeling efforts that explore the potential for recycling displacement for the case of commodity materials such as paper, copper and aluminum. These approaches help to assess the contexts under which recycling may reduce a material or product footprint.
シェフィ教授は、システムの最適化、リスク分析、およびサプライチェーン管理の専門家です。彼の著者には、教科書と4冊の受賞歴のある経営書があります。さらに2020年10月1日には「The New Abnormal」が出版されました。 シェフィ教授の指揮により、MIT CTLは、世界中の6つの学術センターが関与するMIT SCALEネットワークを含めた、多くの教育、研究、および業界/政府の支援プログラムを立ち上げています。 2015年、MIT CTLはオンラインのMicromaster’s programを開始し、196ヶ国から35万人の学生が参加しています。 シェフィ教授は研究のほか、多くの組織にも助言をしています。実際に5つの企業を設立または共同設立し、その全ては大企業に買収されています。 シェフィ博士は、学術および業界、さまざまな分野で認められ、数多くの賞を受賞しています。
気候変動とその影響の拡大の証拠がますます鮮明になってきたにもかかわらず、環境保護の宣言が次々と打ち出される割に環境保護対策は進んでいません。多くの消費者、企業、そして政府は各自の行動をほんの少しだけ変えてみたにすぎません。約束された行動が本当に実行に移されたとしても現状維持が関の山で、最悪の場合、地球は目の前にある破滅の道を突き進むことになるでしょう。発展途上国の何十億人もの消費者が怠け者集団に加われば、小さな変化さえも起こりにくくなると思われます。現在の取組みを継続すべきである一方、(環境保護運動によって原子力発電所の開発が今後も失速したままならば)炭素隔離・貯留技術が解決策になるというのが私の主張です。
味の素社に入社後、R&D(研究開発)、および、調味料、加工食品やスポーツーツサプリの 開発マーケティングに携わった後、上海味の素食品研究開発センター社総経理、味の素グループでのサイエンスコミュニケーション担当を経て、2020 年より現職。
食と健康の課題が多様化する中、味の素グループは、アミノ酸の働きで世界中の人々の健康増進と食習慣の改善への貢献を目指しています。私たちは、130 を超える国・地域で事業 を展開しており、多様な文化・価値観や人権を尊重し、地域の発展に貢献する社会的責任を 担っています。また、私たちの事業活動は多くの資源・エネルギーに支えられており、温室 効果ガス排出削減など、バリューチェーン全体で環境負荷を改善する余地があります。 そこで、味の素グループではビジョンを刷新し、2030 年のアウトカムとして、「10 億人 の健康寿命延伸」と「環境負荷50%削減」を掲げて、事業を通じてサステナビリティを実現したいと考えています。健康なこころとからだ、循環型社会、多様で豊かな社会への貢献にむけた、当社グループの考え方や取り組みを紹介いたします。
Sourcemap: サプライチェーンの透明なプラットフォーム
Via Separations: 濾過材の改良とエネルギー削減により産業(廃棄物)分離を変換していく膜プラットフォーム
オリベッティ教授は、マサチューセッツ工科大学の材料科学工学部(DMSE)Esther and Harold E. Edgertonキャリア開発の教授です。彼女の研究は、世界規模で急速に拡大している需要の状況下における、環境の改善と材料の実用的な持続可能性に焦点を当てています。バージニア大学工学科学で理学士号を取得し、マサチューセッツ工科大学材料科学工学で博士号を取得しています。
リサイクルに起因する環境的便益は、私たちがエネルギー集約的な一次生産を低影響の二次生産に切り替えるという前提に基づいています。しかしながら、この議論は複雑な社会経済システムを純粋に工学的なレンズで見ることになりがちです。今回のプレゼンテーションでは、素材と製品のループを循環させることが実際に一次生産を防ぐことになるのかどうかについて論じます。二次が一次に取って代わると二次の価格が下がり、可能な場合にはより多くの一次が二次に切り替えられる。その結果、一次の価格が下がり、一次の需要が増大して代替の可能性が打ち消されることがありうる。それがこの反論の論拠です。この反論にはエネルギー効率改善によるリバウンド効果の概念と非常によく似た部分があります。それは同時に、二次生産の素材が一次生産に取って代わる可能性についての議論でもあります。代替に影響を与える重要な側面は、二次産品による一次産品代替能力と価格効果です。このプレゼンテーションでは、紙・銅・アルミニウムといった一次産品素材の例を取り上げ、リサイクルによる代替の可能性を探るためのツールと分析モデリングの取組みについて説明します。こうしたアプローチは、リサイクルによって材料や製品のフットプリントを縮小しうる背景を評価する上で役立ちます。