Faculty Profiles - YONEZAWA Takuro

Papers - YONEZAWA Takuro

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Evercopter: Continuous and adaptive over-the-air sensing with detachable wired flying objects Reviewed

Yutaro Kyono, Tomotaka Ito, Takuro Yonezawa, Jin Nakazawa, Hiroki Nozaki, Kazunori Takashio, Masaki Ogawa

UbiComp 2013 Adjunct - Adjunct Publication of the 2013 ACM Conference on Ubiquitous Computing page： 299 - 302 2013

Language：English Publishing type：Research paper (international conference proceedings) Publisher：ACM

The paper proposes EverCopter, which provides continuous and adaptive over-the-air sensing with detachable wired flying objects. While a major advantage of sensing systems with battery-operated MAVs is a wide sensing coverage, sensing time is limited due to its limited amount of energy. We propose dynamically rechargeable flying objects, called EverCopter. EverCopter achieves both long sensing time and wide sensing coverage by the following two characteristics. First, multiple EverCopters can be tied in a row by power supply cables. Since the root EverCopter in a row is connected to DC power supply on the ground, each EverCopter can fly without battery. This makes their sensing time forever, unless the power supply on the ground fails. Second, the leaf EverCopter can detach itself from the row in order to enjoy wider sensing coverage. An EverCopter, while it is detached, runs with its own battery-supplied energy. When the remaining energy becomes low, it flies back to the row to recharge the battery.

DOI： 10.1145/2494091.2494183

Scopus

Second-sighted glasses : Discovering and understanding context-Aware services with augmented reality technique Reviewed

Yonezawa T., Tokuda H.

Proceedings of the SICE Annual Conference page： 2386 - 2391 2013

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Proceedings of the SICE Annual Conference

There has been a great effort to create context-Aware technology to support user's life. Context-Aware technology is useful because it resolves user's demand in prior. However, if it fails to recognize context correctly and controls appliances incorrectly, users may feel uncomfortable about the environment. Context recognition error is currently unavoidable, therefore, notifying the user of what kind of result each context has, is considered to be important in order to ease user's discomfort. In the similar way, it is important to show the smartness of ubiquitous computing environment to people who don't know about the environment. To effectively provide this information to the users, we propose an interface called Second-sighted Glasses, inspired by the movie titled "Next". The glasses shows users the future effects of each action they may take with augmented reality technique.

Scopus

Temperature distributions of electron beam-irradiated samples by scanning electron microscopy Reviewed

Tokunaga, T; Narushima, T; Yonezawa, T; Sudo, T; Okubo, S; Komatsubara, S; Sasaki, K; Yamamoto, T

JOURNAL OF MICROSCOPY Vol. 248 ( 3 ) page： 228 - 233 2012.12

Language：English Publishing type：Research paper (scientific journal) Publisher：Journal of Microscopy

An electron beam (EB) generated by a scanning electron microscope (SEM) was used to irradiate two samples having different thermal conductivities, and the resulting temperatures of the EB-irradiated areas as well as the temperature distributions within the samples were then measured using a thermal camera. These measurements showed overall increases in sample temperatures, as well as revealed temperature rises at the EB-irradiated areas that had little difference with one of the theoretical predictions. Differences between the actual and the predicted temperature measurements were analysed in terms of the accuracy with which parameters could be estimated. The temperature distributions of the samples were measured and, On the basis of the results, it was hypothesized that the temperature differential over an irradiated sample will be inversely correlated with its thermal conductivity. © 2012 Royal Microscopical Society.

DOI： 10.1111/j.1365-2818.2012.03666.x

Web of Science

Scopus

PubMed

Detection, classification and visualization of place-triggerd geotagged tweets Reviewed

Hiruta S., Yonezawa T., Jurmu M., Tokuda H.

UbiComp'12 - Proceedings of the 2012 ACM Conference on Ubiquitous Computing page： 956 - 963 2012.12

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：UbiComp'12 - Proceedings of the 2012 ACM Conference on Ubiquitous Computing

This paper proposes and evaluates a method to detect and classify tweets that are triggered by places where users locate. Recently, many related works address to detect real world events from social media such as Twitter. However, geotagged tweets often contain noise, which means tweets which are not content-wise related to users' location. This noise is problem for detecting real world events. To address and solve the problem, we define the Place-Triggered Geotagged Tweet, meaning tweets which have both geotag and content-based relation to users' location. We designed and implemented a keyword-based matching technique to detect and classify place-triggered geotagged tweets. We evaluated the performance of our method against a ground truth provided by 18 human classifiers, and achieved 82% accuracy. Additionally, we also present two example applications for visualizing place-triggered geotagged tweets. Copyright 2012 ACM.

Scopus

LiDSN: A method to deploy wireless sensor networks securely based on light communication Reviewed

Doan G., Nguyen M., Takimoto T., Yonezawa T., Nakazawa J., Takashio K., Tokuda H.

UbiComp'12 - Proceedings of the 2012 ACM Conference on Ubiquitous Computing page： 539 - 540 2012.12

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：UbiComp'12 - Proceedings of the 2012 ACM Conference on Ubiquitous Computing

Deploying Wireless Sensor Networks (WSN) securely still requires users to have certain skills and exert effort. In the near "sensor everywhere" future, a much simpler method for deploying WSN will be necessary for end-users. We propose LiDSN(Light Communication for Deploying Secure Wireless Sensor Networks) which enables users to achieve deployment tasks via simple interaction. LiDSN leverages light-based communication between an LED and a light sensor in order to add a new sensor node securely into existing WSN. Through touching interaction, a new sensor node ID and secret key can be transmitted to the WSN, and then the WSN is able to identify which node should be added while maintaining the security of the WSN. Copyright 2012 ACM.

Scopus

Empowering Human and Objects with Virtual Networked Sensing and Applications

TOKUDA Hideyuki, NAKAZAWA Jin, YONEZAWA Takuro, AIDA Haruto, ITO Tomotaka

IEICE technical report. Information networks Vol. 112 ( 230 ) page： 49 - 53 2012.10

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：一般社団法人電子情報通信学会

We presents Virtual Networked Sensing architecture, which integrates multiple physical sensor network as virtual sensor network to create various applications. We also develop 3 categories of applications-Sense of Objects, Sense of People and Sense of Society, based on Virtual Networked Sensing architecture.

CiNii Books

Control Manually:視聴者協力型ライブ演出システムによるコミュニケーションと演出効果の拡張

米澤拓郎, 徳田英幸

研究報告エンタテインメントコンピューティング（EC） Vol. 2012 ( 8 ) page： 1 - 8 2012.7

Language：Japanese Publishing type：Research paper (scientific journal)

インターネット生放送の利点の一つに，配信者と視聴者間の密なコミュニケーションが可能である点が挙げられるが，現状ではコメントを通じた双方向性に限られている．生放送コンテンツとして楽器の演奏が挙げられるが，演奏中は集中しているため，コメントによる視聴者とのコミュニケーションは希薄となる．本研究では演奏配信に適した新たなコミュニケーション手段として，視聴者が演奏者の配信環境を制御し，演出を行うことでコミュニケーションを可能とする視聴者協力型ライブ演出システムを提案する．4 週間に及ぶ配信実験の結果，同システムを用いることで演奏者と視聴者間，および視聴者間での非言語コミュニケーションが創発され，生放送参加者の一体感の拡大につながるとともに，ズームインやパン，カメラの切り替えなどのカメラワークによって演出効果が向上したことを示す．また実験結果に基づき，将来のインタラクティブ生放送支援システムのデザインの指針を示す．

CiNii Books

Control Manually:視聴者協力型ライブ演出システムによるコミュニケーションと演出効果の拡張

米澤拓郎, 徳田英幸

研究報告ユビキタスコンピューティングシステム（UBI） Vol. 2012 ( 8 ) page： 1 - 8 2012.7

Language：Japanese Publishing type：Research paper (scientific journal)

CiNii Books

セキュアな光通信を用いたWSN構築手法

グエン・ゾアン・ミン・ザン, 瀧本拓哉, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

研究報告ユビキタスコンピューティングシステム（UBI） Vol. 2012 ( 3 ) page： 1 - 6 2012.7

Language：Japanese Publishing type：Research paper (scientific journal)

現在，多数のセンサノードから成る Wireless Sensor Network (WSN) が普及しつつある．また健康モニタリングシステムや警備システムなど WSN を用いた様々なアプリケーションが開発されている．本研究では将来的にそれらの WSN やアプリケーションが，家庭など身近な環境に普及していくと想定している．そうした環境においてはエンドユーザは自分でセンサノードを購入して，自分で家に設置し利用である必要がある．しかし，現在提案されている WSN を構築するための手法では，WSN に関する知識や経験が必要となるため，エンドユーザが利用するのは困難である．本研究ではセキュアな光通信を用いた WSN 構築手法，LiDSN を提案する．

CiNii Books

セキュアな光通信を用いたWSN構築手法

グエン・ゾアン・ミン・ザン, 瀧本拓哉, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

研究報告エンタテインメントコンピューティング（EC） Vol. 2012 ( 3 ) page： 1 - 6 2012.7

Language：Japanese Publishing type：Research paper (scientific journal)

CiNii Books

A-15-20 Implementation and Evaluation of Vibration-based Information Transfer for Smart Devices Reviewed

Yonezawa Takuro, Nakazawa Jin, Tokuda Hideyuki

Proceedings of the IEICE General Conference Vol. 2012 page： 240 - 240 2012.3

D-5-1 Detection and Visualization of Place-triggered Geotagged Tweets Reviewed

Hiruta Shinya, Yonezawa Takuro, Nakazawa Jin, Takashio Kazunori, Tokuda Hideyuki

Proceedings of the IEICE General Conference Vol. 2012 ( 1 ) page： 48 - 48 2012.3

Detection, Classification and Visualization of Place-triggerd Geotagged Tweets Reviewed

Hiruta, S; Yonezawa, T; Jurmu, M; Tokuda, H

UBICOMP'12: PROCEEDINGS OF THE 2012 ACM INTERNATIONAL CONFERENCE ON UBIQUITOUS COMPUTING page： 956 - 963 2012

LiDSN: A Method to Deploy Wireless Sensor Networks Securely based on light communication Reviewed

Nguyen, GDM; Takimoto, T; Yonezawa, T; Nakazawa, J; Takashio, K; Tokuda, H

UBICOMP'12: PROCEEDINGS OF THE 2012 ACM INTERNATIONAL CONFERENCE ON UBIQUITOUS COMPUTING page： 539 - 540 2012

Enhancing communication and dramatic impact of online live performance with cooperative audience control Reviewed

Takuro Yonezawa, Hideyuki Tokuda

UbiComp'12 - Proceedings of the 2012 ACM Conference on Ubiquitous Computing page： 103 - 112 2012

Language：English Publishing type：Research paper (international conference proceedings) Publisher：ACM

Recent progress in information technology enables people to easily broadcast events live on the Internet. Although the advantage of the Internet is live communication between a performer and listeners, the current mode of communication is writing comments using Twitter or Facebook, or some similar messaging network. In one type of live broadcast, musical performances, it is difficult for a musician, when playing an instrument, to communicate with listeners by writing comments. We propose a new communication mode between performers who play musical instruments, and their listeners by enabling listeners to control the performer's camera or illumination remotely. The results of four weeks of experiment confirm the emergence of nonverbal communication between a performer and listeners, and among listeners, which increases camaraderie amongst listeners and performers. Additionally, the dramatic impact of a performance is increased by enabling listeners to control various camera actions such as zoom-in or pan in real time. The results also provide implications for design of future interactive live broadcasting services. Copyright 2012 ACM.

DOI： 10.1145/2370216.2370234

Scopus

Detection, classification and visualization of place-triggered geotagged tweets. Reviewed

Shinya Hiruta, Takuro Yonezawa, Marko Jurmu, Hideyuki Tokuda

The 2012 ACM Conference on Ubiquitous Computing, Ubicomp '12, Pittsburgh, PA, USA, September 5-8, 2012 page： 956 - 963 2012

LiDSN: a method to deploy wireless sensor networks securely based on light communication. Reviewed

Giang Doan, Minh Nguyen, Takuya Takimoto, Takuro Yonezawa, Jin Nakazawa, Kazunori Takashio, Hideyuki Tokuda

The 2012 ACM Conference on Ubiquitous Computing, Ubicomp '12, Pittsburgh, PA, USA, September 5-8, 2012 page： 539 - 540 2012

Enhancing Communication and Dramatic Impact of Online Live Performance with Cooperative Audience Control Reviewed

Yonezawa, T; Tokuda, H

UBICOMP'12: PROCEEDINGS OF THE 2012 ACM INTERNATIONAL CONFERENCE ON UBIQUITOUS COMPUTING page： 103 - 112 2012

Prevention Support System for Baseball player's throwing injuries

NISHIYAMA YUUKI, TAKIMOTO TAKUYA, YONEZAWA TAKURO, NAKAZAWA JIN, TAKASHIO KAZUNORI, TOKUDA HIDEYUKI

IEICE technical report Vol. 111 ( 134 ) page： 119 - 125 2011.7

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：一般社団法人電子情報通信学会

Some baseball players have their shoulder and elbow injuries cause of the disorder of the throwing form and an overwork. Fielders especially practice without knowledge of their bodies and care for it. However it is difficult to recognize their throwing form and number of throws. This research has been supported player's performance by analysis of player's throwing using sanjigen-motion-capcher and douga-bunnseki for all time. But this research has problems with place and time. Because it doesn't assume actual practices. So we are researching for their new supports to improve their form and to take a break by using the radio small acceleration sensor which you can check your throwing form and number of throws easily.

CiNii Books

Prevention Support System for Baseball player's throwing injuries

西山勇毅, 瀧本拓哉, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

研究報告ユビキタスコンピューティングシステム（UBI） Vol. 2011 ( 24 ) page： 1 - 7 2011.7

Language：Japanese Publishing type：Research paper (scientific journal)

野球では崩れた投球フォームでの投球や過度の練習などにより，投球障害 (肩や肘への怪我) が多く発生する．特に野手は自分の練習量を意識せずに練習することが多く，主観による体調管理しか行われていない．既存研究では，スポーツ障害の防止，投球パフォーマンスの向上などを目的として，三次元モーションキャップチャーや動画解析などによる投球動作の分析が行われてきた．しかし，これらの研究は実際の練習での使用を想定していないため，場所の制限や解析の時間的コストなどの問題点がある．本研究では，野球選手の野手を対象に体に装着したウェアラブルなセンサを用いて客観的な投球疲労の取得手法を提案する．Some baseball players have their shoulder and elbow injuries cause of the disorder of the throwing form and an overwork. Fielders especially practice without knowledge of their bodies and care for it. However it is difficult to recognize their throwing form and number of throws. This research has been supported player's performance by analysis of player's throwing using sanjigen-motion-capcher and douga-bunnseki for all time. But this research has problems with place and time. Because it doesn't assume actual practices. So we are researching for their new supports to improve their form and to take a break by using the radio small acceleration sensor which you can check your throwing form and number of throws easily.

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Papers - YONEZAWA Takuro