UTSUMI Tomihiro

写真a

Affiliation

Graduate School of Engineering Science  Department of Mathematical Science and Electrical-Electronic-Computer Engineering  Human-Centered Computing Course 

Research Interests 【 display / non-display

  • Remote Measurement

  • Wireless Sensor Networks

  • Internet of Things

Graduating School 【 display / non-display

  • 1993.04
    -
    1997.03

    Akita University   Faculty of Mining   Graduated

Graduate School 【 display / non-display

  •  
    -
    2014.03

    Akita University  Graduate School of Engineering and Resource Science  Doctor's Course  Accomplished credits for doctoral program

Campus Career 【 display / non-display

  • 2010.04
    -
    Now

    Akita University   Graduate School of Engineering and Resource Science   Department of Computer Science and Engineering   Assistant Professor  

Academic Society Affiliations 【 display / non-display

  • 2003.05
    -
    Now
     

    Japan

     

    IPSJ (Information Processing Society of Japan)

  • 1993.03
    -
    Now
     

    Japan

     

    IEICE (The Institute of Electronics, Information and Communication Engineers)

Research Areas 【 display / non-display

  • Informatics / Computer system

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

  • Informatics / Information network  / Sensor Networks, IoT

 

Research Achievements 【 display / non-display

    ◆Original paper【 display / non-display

  • MUS3E: A Mobility Ubiquitous Sensor Edge Environment for the Elderly

    Tomihiro Utsumi, Masatoshi Arikawa, Masashi Hashimoto

    Electronics (Switzerland) ( Electronics (Switzerland) )  12 ( 14 ) 3003 - 3003   2023.07  [Refereed]

    Research paper (journal)   Domestic Co-author

    With the ageing of society, the number of households with older individuals or couples living alone is increasing. An “ageing-in-place” approach allows older adults to continue to live at home and receive help only when needed. However, this approach is insufficient for emergencies, such as falls, as well as for individuals with gradually deteriorating health conditions, such as frailty. Unexpected accidents significantly reduce the quality of life (QoL) of older adults. This paper proposes a new framework, the mobility ubiquitous sensor edge environment (MUS3E), to digitally transform ordinary houses to detect the movement of older individuals throughout their home environment and to notify family members and care providers of residents’ health status and safety information. The framework can be easily and inexpensively installed in any home, transforming an ordinary house into a smart home with an automated function for monitoring older residents. It uses ambient sensors such as passive infrared ray sensors to automatically measure health conditions by measuring factors such as walking speed. Residents need not interact with or control the system and can go about their daily lives. Since the sensors used in this system are mass-produced consumer products, they are inexpensive and easily replaceable, as there are many alternatives. In this study, we were able to demonstrate the practically and feasibility of this framework using a prototype that uses open architecture Internet of Things (IoT) software (Debian GNU/Linux 11, Arduino 1.8.19, ESP8266 2.7.4, ESP32 1.0.6, PubSubClient 2.8.0, ESPPerfectTime 0.3.0, mosquitto 2.0.11) components to digitally transform the living environment of older individuals.

    DOI

  • Traffic Engineering by Offloading Using Enhanced Links and Determnation of Most Effective Links Suitable for Upgradable TE

    Hashimoto Masashi, Kinno Mio, Shinozaki Syouta, Utsumi Tomihiro

    IEEJ Transactions on Electronics, Information and Systems ( The Institute of Electrical Engineers of Japan )  138 ( 8 ) 1020 - 1028   2018.08  [Refereed]

    Research paper (journal)   Domestic Co-author

    <p>Offloading which means the enhancement of link capacity is performed to accommodate ever-increasing network traffic. We study determination of enhancement links effective even if there are many links showing the high same link utilization ratio. And also, it is desirable that the link enhancement is performed on a stepwise link pair which has the greatest effect of improving congestion and achieves an effect each time it is increased by one. In this paper, first, we propose a determination method of offloading link section and its effectiveness is verified. Second, we propose and discuss a stepwise link decision method that maintains the effective improvement of congestion reduction.</p>

    DOI CiNii Research

  • Metric-base Traffic Engineering with Limited Area for TE Considering QoS Characteristics

    Hashimoto Masashi, Koyama Shinsuke, Funaki Takahiro, Utsumi Tomihiro

    IEEJ Transactions on Electronics, Information and Systems ( The Institute of Electrical Engineers of Japan )  138 ( 7 ) 912 - 920   2018.07  [Refereed]

    Research paper (journal)   Domestic Co-author

    <p>We propose traffic engineering which exists together with metric base QoS routing. In shortest paths routing, particular several links tends to be congested. TE in our proposal is adopted only to the specified area, TE area, consisting of congested links. So route of traffic which does not transmit through TE area have no change. We realize this TE routing with metric base, which means all routes are determined as shortest paths according to link costs. We formulate this as LP network problem (primary problem) and dual problem for derivation of link costs. Simulation results confirm that proposed method achieves metric base QoS routing without congestion.</p>

    DOI CiNii Research

  • Simple Method with Link Cost Setting for Simulating Traffic Congestion in Disaster-affected Networks

    Hashimoto Masashi, Koyama Shinsuke, Utsumi Tomihiro, Sakano Toshikazu

    IEEJ Transactions on Electronics, Information and Systems ( The Institute of Electrical Engineers of Japan )  137 ( 3 ) 445 - 451   2017.03  [Refereed]

    Research paper (journal)   Domestic Co-author

    <p>We propose a method that addresses the shortest path problem in estimating network traffic distribution when a network infrastructure is damaged at the time of disaster. It uses link costs that are different from those used prior to the disaster. There are three assumptions: (1) traffic whose source and destination points lie outside the disaster-affected area do not use damaged networks, (2) Traffic that traverses the border of the disaster-affected area uses at most one link, (3) traffic that is related to the disaster-affected area does not exit disaster area. We use different link costs from those used prior to the disaster time, and the shortest paths under the link costs that satisfy conditions (1), (2), and (3) above. In this paper, we introduce a method for setting link costs and adapt it to yield a real networking model. We set traffic patterns and a disaster-affected area and carry out simulations. The simulation results confirm that it is possible to simulate the changes in volume and the distribution of traffic owing on each link.</p>

    DOI CiNii Research

  • A Feasibility Study on the Buffer-Less Routing Networks Using Deflection Routing Control

    Tomihiro Utsumi, Shin Konno, Yusuke Kanno, Ken-ichi Yukimatsu, Mahito Kobayashi, Masashi Hashimoto

    The IEICE Transactions on Communications(Japanese Edition) ( The Institute of Electronics, Information and Communication Engineers )  J92-B ( 11 ) 1741 - 1749   2009.11  [Refereed]

    Research paper (journal)   Domestic Co-author

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    ◆International conference proceedings【 display / non-display

  • Adaptable Data-Driven Geofences for Notifying Points of Interest Using Tourists' GPS Trajectories

    Iori Sasaki, Masatoshi Arikawa, Min Lu, Ryo Sato, Tomihiro Utsumi

    Proceedings of the 7th ACM SIGSPATIAL Workshop on Location-based Recommendations, Geosocial Networks and Geoadvertising ( ACM )    2023.11  [Refereed]

    Research paper (international conference proceedings)   Domestic Co-author

    DOI

  • Development of an Early Detection System of Pre-frailty in Senior Citizens Living Inside

    Tomihiro Utsumi, Masashi Hashimoto

    Proc. of International Conference on Ubiquitous Information Management and Communication ( IEEE )    2023.01  [Refereed]

    Research paper (international conference proceedings)   Domestic Co-author

    DOI

  • Construction of a Pre-frailty Detection System based on Walking Speed and Heat Maps using PIR Sensors

    Tomihiro Utsumi, Masashi Hashimoto

    Proc. of IEEE 8th World Forum on Internet of Things ( IEEE )    2022.11  [Refereed]

    Research paper (international conference proceedings)   Domestic Co-author

    DOI

  • A Walking Speed Measurement System Using PIR Sensors for Early Detection of Pre-Frailty

    Tomihiro Utsumi, Masashi Hashimoto

    BMEiCON 2021 - 13th Biomedical Engineering International Conference ( BMEiCON 2021 - 13th Biomedical Engineering International Conference )    2021.11  [Refereed]

    Research paper (international conference proceedings)   Domestic Co-author

    DOI

  • Bufferless Packet Routing Method for Next Generation Optical Networks (jointly worked)

    Tomihiro Utsumi, Yusuke Kanno, Shin Konno, Akinori Sato, Ken-ichi Yukimatsu, Mahito Kobayashi, Masashi Hashimoto

    Proceedings of Photonics in Switching 2008     2008.08  [Refereed]

    Research paper (international conference proceedings)   Domestic Co-author

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

  • Grant-in-Aid for Young Scientists(B)

    Project Year: 2012.04  -  2014.03 

Presentations 【 display / non-display

  • Functions of Orienting Users to Right Position for Viewing Photos in AR Spaces

    藤原稜大, 黒崎蓮, 有川正俊, Lu Min, 佐藤諒, 佐々木一織, 内海富博

    電気関係学会東北支部連合大会  (岩手県立大学)  2023.09  -  2023.09 

  • Development of a Walking Speed Measurement System for Preventing Frailty of The Elderly Using Pyroelectric Infrared Radial Sensor

    Tomihiro Utsumi, Hashimoto Masashi

    2021 IEICE General Conference  2021.03  -  2021.03 

  • The Effectiveness Study of Transponder Node in Sensor Networks (2) : Using Metrics

    Tomihiro Utsumi, Masashi Hashimoto

    IEICE General Conference 2020  2020.03  -  2020.03 

  • The Effectiveness Study of Transponder Node in Sensor Networks (1)

    Tomihiro Utsumi, Masashi Hashimoto

    IEICE General Conference 2020  2020.03  -  2020.03 

  • A proposal on agile and temporarily construction of localized network service using physical web, one of IoT device

    Taizan Todate, Yukou Sugawara, Tomihiro Utsumi, Masashi Hashimoto

    Technical Committee on Network Systems  2017.06  -  2017.06 

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