Shirasaka, Seiko

写真a

Affiliation

Graduate School of System Design and Management (Hiyoshi)

Position

Professor

Related Websites

Profile 【 Display / hide

  • Dr.Seiko Shirasaka earned a Master's degree in Astronautics from University of Tokyo and a Doctoral degree in Systems Engineering from KEIO University. He worked for Mitsubishi Electric Corporation as space systems engineer for 15 years. One of the projects which he worked for is H-II transfer vehicle, from ground to the international space station. His final position in the project was a technical lead. He had been an Associate Professor at Graduate School of System Design and Management at KEIO university since 2008 and he is Professor since 2017. He is a Program Manager of ImPACT, Impulsing Paradigm Change through Disruptive Technologies Program, lead by Cabinet office of Japan from 2015 to 2019. His main research topics are System development methodology especially systems architecture.

Academic Background 【 Display / hide

  • 1988.04
    -
    1992.03

    The University of Tokyo, Faculty of Engineering, Department of Aeronautics and Astronautics

    Tokyo, University, Graduated, Other

  • 1992.04
    -
    1994.03

    The University of Tokyo, School of Engineering, Department of Aeronautics and Astronautics

    Tokyo, Graduate School, Completed, Master's course

  • 2009.04
    -
    2012.03

    Keio University, Graduate School of System Design and Management

    Tokyo, Graduate School, Completed, Doctoral course

Academic Degrees 【 Display / hide

  • システムエンジニアリング学, 慶應義塾大学大学院, Coursework, 2012.03

    メタ思考と実現子を活用したアーキテクチャフレームワーク構築プロセス -水平・垂直関係を活用した階層型システム開発方法論の提案とその宇宙機コンピュータシステム安全性設計への適用-

 

Research Areas 【 Display / hide

  • Design science

  • Social systems engineering/Safety system

  • Control engineering/System engineering

  • Aerospace engineering

Research Keywords 【 Display / hide

  • Systems Engineering

  • Design Thinking

  • astronautics

 

Books 【 Display / hide

  • ワイガヤの本質-"ひらめき"は必然的に起こせる

    SHIRASAKA Seiko, 日刊工業新聞社, 2018.03

  • システムデザイン・マネジメントとは何か

    SHIRASAKA Seiko, 慶應義塾大学出版会, 2016.11

  • 【横幹〈知の統合〉シリーズ】 価値創出をになう人材の育成 コトつくりとヒトつくり

    SHIRASAKA Seiko, 東京電機大学出版, 2016.11

  • Global Perspective on Service Science

    SHIRASAKA Seiko, Springer, 2016.04

    Scope: Chapter 6, Chapter 7

  • システム×デザイン思考で世界を変える 慶應SDM「イノベーションのつくり方」

    SHIRASAKA Seiko, 日経BP社, 2014.03

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Papers 【 Display / hide

  • Adaptive enterprise architecture process for global companies in a digital IT era

    Masuda Y., Zimmermann A., Bass M., Nakamura O., Shirasaka S., Yamamoto S.

    International Journal of Enterprise Information Systems (International Journal of Enterprise Information Systems)  17 ( 2 ) 21 - 43 2021.04

    ISSN  15481115

     View Summary

    Enterprise architecture (EA) is useful for promoting digital transformation in global companies and information societies. In this paper, the authors investigated and analyzed the process for digital transformation in global companies, together with related work in using and applying an enterprise architecture framework for the digital era named the adaptive integrated digital architecture framework (AIDAF). Moreover, they position the AIDAF framework for processing digital transformation in global companies. Based on this analysis, the authors propose and describe a new enterprise architecture process for promoting digital transformation in global companies. Furthermore, the authors propose an adaptive EA cycle-based architecture board framework on digital platforms, while verifying them with case studies in global companies. Finally, the authors clarify the challenges and critical success factors of the process and framework for digital transformation with architecture board reviews in the adaptive EA cycle to assist EA practitioners with its implementation.

  • 2.65 Gbps downlink communications with polarization multiplexing in X-band for small earth observation satellite

    Kaneko T., Kawano N., Nagao Y., Murakami K., Watanabe H., Mita M., Tomoda T., Hirako K., Shirasaka S., Nakasuka S., Saito H., Hirose A.

    IEICE Transactions on Communications (IEICE Transactions on Communications)  E104B ( 1 ) 1 - 12 2021.01

    ISSN  09168516

     View Summary

    This paper reports our new communication components and downlink tests for realizing 2.65 Gbps by utilizing two circular polarizations. We have developed an on-board X-band transmitter, an on-board dual circularly polarized-wave antenna, and a ground station. In the onboard transmitter, we optimized the bias conditions of GaN High Power Amplifier (HPA) to linearize AM-AM performance. We have also designed and fabricated a dual circularly polarized-wave antenna for low-crosstalk polarization multiplexing. The antenna is composed of a corrugated horn antenna and a septum-type polarizer. The antenna achieves Cross Polarization Discrimination (XPD) of 37 - 43 dB in the target X-band. We also modify an existing 10 m ground station antenna by replacing its primary radiator and adding a polarizer. We put the polarizer and Low Noise Amplifiers (LNAs) in a cryogenic chamber to reduce thermal noise. Total system noise temperature of the antenna is 58 K (maximum) for 18 K physical temperature when the angle of elevation is 90 on a fine winter day. The dual circularly polarized-wave ground station antenna has 39.0 dB/K of Gain - system-noise Temperature ratio (G/T) and an XPD higher than 37 dB. The downlinked signals are stored in a data recorder at the antenna site. Afterwards, we decoded the signals by using our non-real-time software demodulator. Our system has high frequency efficiency with a roll-off factor α = 0.05 and polarization multiplexing of 64APSK. The communication bits per hertz corresponds to 8.41 bit/Hz (2.65 Gbit/315 MHz). The system is demonstrated in orbit on board the RAPid Innovative payload demonstration Satellite (RAPIS-1). RAPIS-1 was launched from Uchinoura Space Center on January 19th, 2019. We decoded 10 bits of downlinked R- and L-channel signals and found that the downlinked binary data was error free. Consequently, we have achieved 2.65 Gbps communication speed in the X-band for earth observation satellites at 300 Mega symbols per second (Msps) and polarization multiplexing of 64APSK (coding rate: 4/5) for right- and left-hand circular polarizations. ◦ 10

  • Internet of robotic things with digital platforms: Digitization of robotics enterprise

    Masuda Y., Zimmermann A., Shirasaka S., Nakamura O.

    Smart Innovation, Systems and Technologies (Smart Innovation, Systems and Technologies)  189   381 - 391 2021

    ISSN  9789811557835

     View Summary

    Internet of Things (IoT) provides a strong platform for computer users to connect objects, devices, and people to the Internet for exchanging or sharing of information with each other. IoT is growing rapidly and is expected to adapt to disciplines such as manufacturing, agriculture, healthcare, and robotics. Furthermore, the new concept of IoT is proposed and shown, especially for robotics areas as Internet of Robotics Things (IoRT). IoRT is a mixed structure of diverse technologies such as cloud computing, artificial intelligence, and machine learning. However, to promote and realize IoRT, digitization and digital transformation should be proceeded and implemented in the robotics enterprise. In this paper, we propose an architecture framework for IoRT-based digital platforms and verify it using a planned case in a global robotics enterprise. The associated challenges and future research directions in this field are also presented.

  • The Latest Status of Our Commercial Small Synthetic Aperture Radar Satellite Constellation

    Obata T., Arai M., Asada S., Imaizumi T., Saito H., Shirasaka S.

    International Geoscience and Remote Sensing Symposium (IGARSS) (International Geoscience and Remote Sensing Symposium (IGARSS))     3578 - 3580 2020.09

    ISSN  9781728163741

     View Summary

    Expectations for SAR (Synthetic Aperture Radar) satellites that can observe a target area through clouds and during nighttime are emerging, especially in Asia where high cloud cover rates prevent from the satellite monitoring with optical sensors. We will build a constellation of the small SAR satellites to realize short term revisits, shorter than one day to take advantage of SAR sensors that can acquire data regardless of weather and time in a day. We expect the constellation expands needs of the SAR data to business and private decision making, and develop a market for commercial use. We will launch the first demo satellite in 2020. We are already preparing to build the second satellite and will make six satellite constellation until 2022. Our final goal is to build a constellation of 25 satellites.

  • Features of a good story for non-technical adults to learn emerging technologies

    Seya K., Kobayashi N., Shirasaka S.

    International Journal of Emerging Technologies in Learning (International Journal of Emerging Technologies in Learning)  15 ( 3 ) 15 - 33 2020

    ISSN  18688799

     View Summary

    The need to learn emerging technologies such as artificial intelligence is increasingly important not only for technical people but also for nontechnical people. Previous studies showed the effectiveness of a story-based teaching method for both technical and non-technical people who want to learn emerging technologies. However, the difference between the story-building methods for technical people and non-technical people has not been revealed. The purpose of this research is to propose perspectives that reveal the differences in the stories used for emerging technology education and identify the effective story features suited for non-technical adult learners by comparing the different story-building methods used for technical people and non-technical people. In this study we classified the story types into two perspectives: "past to present" and "present to future" and compared the two story-building methods in these perspectives. The novelty of this research is that the proposal of perspectives that reveal the differences in the stories used for emerging technology education and that we have identified the features of one of the effective stories suited for nontechnical adult learners. We also examined the possibility of leveraging such differences in solving the issues that a class of non-technical people called conversational programmers is facing.

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Papers, etc., Registered in KOARA 【 Display / hide

Reviews, Commentaries, etc. 【 Display / hide

  • 『共同行為における自己実現の段階モデル』を用いた協創型地域づくり拠点の参加者の意識と行動変化の分析

    坂倉杏介, 保井俊之, 白坂成功, 前野隆司

    地域活性研究 6 2015.03

    Prompt report, short report, and research note, etc. (scientific journal), Joint Work

Presentations 【 Display / hide

  • An Analysis of Human Resource Management for Knowledge Workers -Using Three Axes of Target Employee, Lifecycle Stage, and Human Resource Flow

    Yusuke Sato, Nobuyuki Kobayashi, Seiko Shirasaka

    SIBR 2019 TOKYO CONFERENCE ON INTERDISCIPLINARY BUSINESS & ECONOMICS RESEARCH, 2019.01, Oral Presentation(general)

  • Proposal of Entrepreneur’s Behavior Process for Overcoming Japanese Type Valley of Death in Startup Companies

    Yasuo Kogure, Nobuyuki Kobayashi, Maki Kawase, Seiko Shirasaka, Makoto Ioki

    SIBR 2019 TOKYO CONFERENCE ON INTERDISCIPLINARY BUSINESS & ECONOMICS RESEARCH (Tokyo, Japan) , 2019.01, Oral Presentation(general)

  • Proposal of an Approach to Improve Organizational Activation Level Using Value Graph

    Yuichi Mori, Nobuyuki Kobayashi, Eriko Hikishima, Seiko Shirasaka, Makoto Ioki

    SIBR 2019 TOKYO CONFERENCE ON INTERDISCIPLINARY BUSINESS & ECONOMICS RESEARCH, 2019.01, Oral Presentation(general)

  • Proposal of a Method to Evaluate and Promote a Degree of Community Activation

    Kaoruko Manabe, Nobuyuki Kobayashi, Seiko Shirasaka, Makoto Ioki

    SIBR 2019 TOKYO CONFERENCE ON INTERDISCIPLINARY BUSINESS & ECONOMICS RESEARCH, 2019.01, Oral Presentation(general)

  • Proposal of Method and Tool to Promote Knowledge Brokering in Cross-boundary Learning for Organization's Knowledge Acquisition and Personal Career Development

    Kota Isomura, Nobuyuki Kobayashi, Seiko Shirasaka, Makoto Ioki

    SIBR 2019 TOKYO CONFERENCE ON INTERDISCIPLINARY BUSINESS & ECONOMICS RESEARCH, 2019.01, Oral Presentation(general)

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Research Projects of Competitive Funds, etc. 【 Display / hide

  • オンデマンド即時観測が可能な小型合成開口レーダ衛星システム

    2015.09
    -
    2019.03

    内閣府, 革新的研究開発推進プログラム, Principal Investigator

  • 因果関係確率数理分析を用いた公共価値指向地域活性化団体の定量的政策評価法の開発

    2015
    -
    2017

    Grant-in-Aid for Scientific Research, No Setting, Co-investigator

  • アーキテクチャ統合分析法によるワークショップの定量評価と成熟度モデル構築

    2015

    Grant-in-Aid for Scientific Research, No Setting, Principal Investigator

  • 社会システムと技術システムとの統合設計へのシステムデザイン方法論の適用研究

    2011
    -
    2013

    Grant-in-Aid for Scientific Research, No Setting, Co-investigator

Awards 【 Display / hide

  • SIBR Best Paper Award

    Kota Isomura, Nobuyuki Kobayashi, Seiko Shirasaka, Makoto Ioki, 2019.06, Society of Interdisciplinary Business Research, Proposal of Method and Tool to Promote Knowledge Brokering in Cross-boundary Learning for Organization's Knowledge Acquisition and Personal Career Development

    Type of Award: Other Awards

  • SIBR Best Paper Award

    Keisuke Seya, Nobuyuki Kobayashi, Seiko Shirasaka, 2019.01, Society of Interdisciplinary Business Research, Identifying Issues for Technology Learners to Complete Online Courses on Machine Learning and Deep Learning on Their Own Under a Fully Automated Learning Environment

    Type of Award: Awards of International Conference, Council and Symposium.  Country: Thailand

  • SIBR Best Paper Award

    2018.06, Society of Interdisciplinary Business Research, A Proposal of Architectural Framework for Self-organizing Management Utilizing Multi-Layer Customer Value Chain Analysis

  • RIBER Best Paper Prize

    2018.03, Society of Interdisciplinary Business Research, Educational Programs and Practical Examples that Contribute to Work Engagement

  • AIS国際発表奨励賞受賞

    2018.02, 経営情報学会, Architecture Board Practices in Enterprise Architecture towards the Era of Digital IT:A Case of Global Healthcare Enterprise

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Courses Taught 【 Display / hide

  • WORKSHOP DESIGN METHODOLOGY FOR INNOVATION 2

    2021

  • WORKSHOP DESIGN METHODOLOGY FOR INNOVATION 1

    2021

  • WELL-BEING CONSCIOUS MANAGEMENT AND INNOVATION(EMBA)

    2021

  • SYSTEM ASSURANCE

    2021

  • SERVICE ENGINEERING

    2021

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Courses Previously Taught 【 Display / hide

  • イノベーションのためのワークショップデザイン論1

    Keio University, 2018, Autumn Semester, Major subject, Seminar, Within own faculty

  • INTRODUCTION TO SYSTEM DESIGN AND MANAGEMENT

    Keio University, 2018, Autumn Semester, Major subject, Seminar, Within own faculty

  • SDM研究方法論

    Keio University, 2018, Spring Semester, Major subject, Lecture, Outside own faculty (within Keio)

  • イノベーションのためのワークショップデザイン論2

    Keio University, 2018, Spring Semester, Major subject, Seminar, Within own faculty

  • システムデザイン・マネジメント特別講義2

    Keio University, 2018, Spring Semester, Major subject, Lecture, Outside own faculty (within Keio)

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Memberships in Academic Societies 【 Display / hide

  • 日本創造学会, 

    2012.04
    -
    Present
  • 関東都市学会, 

    2011.03
    -
    Present
  • 社会経済システム学会, 

    2010.05
    -
    Present
  • 安全工学会, 

    2010.04
    -
    Present
  • 日本機械学会, 

    2010.04
    -
    Present

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Committee Experiences 【 Display / hide

  • 2021.05
    -
    Present

    業構造審議会 グリーンイノベーションプロジェクト部会WG3 主査, 経済産業省

  • 2021.01
    -
    Present

    第53期 代議員, 一般社団法人 日本航空宇宙学会

  • 2020.09
    -
    Present

    Trusted Web推進協議会, 内閣官房

  • 2020.06
    -
    Present

    理事長, ディペンダビリティ技術推進協会

  • 2020.06
    -
    Present

    次世代スマートメーター制度検討会委員, 経済産業省

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