Faculty Profiles - YONEZAWA Takuro

Papers - YONEZAWA Takuro

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D-9-14 Social Event Detection Based on Formation Process of Crowds Reviewed

Niwa Ryota, Yonezawa Takuro, Nakazawa Jin, Nagata Tomohiro, Suzuki Ryohei, Tokuda Hideyuki

Proceedings of the IEICE General Conference Vol. 2011 ( 1 ) page： 90 - 90 2011.2

Retrieving environmental smartness with second-sighted glasses

米澤拓郎, 中澤仁, 徳田英幸

IEICE technical report Vol. 110 ( 420 ) page： 187 - 192 2011.2

Retrieving environmental smartness with second-sighted glasses

米澤拓郎, 中澤仁, 徳田英幸

IEICE technical report Vol. 110 ( 421 ) page： 187 - 192 2011.2

Retrieving Environmental Smartness with Second-sighted Glasses

YONEZAWA Takuro, NAKAZAWA Jin, TOKUDA Hideyuki

ITE Technical Report Vol. 35.9 ( 0 ) page： 187 - 192 2011

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Image Information and Television Engineers

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.

DOI： 10.11485/itetr.35.9.0_187

CiNii Research

Ubiquitous Services: Enhancing Cyber-Physical Coupling with Smart Enablers

TOKUDA Hideyuki, NAKAZAWA Jin, YONEZAWA Takuro

IEICE Transactions on Information and Systems Vol. E94-D ( 6 ) page： 1122 - 1129 2011

Language：English Publishing type：Research paper (scientific journal) Publisher：The Institute of Electronics, Information and Communication Engineers

Ubiquitous computing and communication are the key technology for achieving economic growth, sustainable development, safe and secure community towards a ubiquitous network society. Although the technology alone cannot solve the emerging problems, it is important to deploy services everywhere and reach real people with sensor enabled smart phones or devices. Using these devices and wireless sensor networks, we have been creating various types of ubiquitous services which support our everyday life. In this paper, we describe ubiquitous services based on a HOT-SPA model and discuss challenges in creating new ubiquitous services with smart enablers such as smart phones, wireless sensor nodes, social media, and cloud services. We first classify various types of ubiquitous service and introduce the HOT-SPA model which is aimed at modeling ubiquitous services. Several ubiquitous services, such as DIY smart object services, Twitthings, Airy Notes, and SensingCloud, are described. We then address the challenges in creating advanced ubiquitous services by enhancing coupling between a cyber and a physical space.

DOI： 10.1587/transinf.e94.d.1122

Web of Science

Scopus

CiNii Research

Vib-Connect: A Device Collaboration Interface Using Vibration Reviewed

Takuro Yonezawa, Hiroshi Nakahara, Hideyuki Tokuda

2011 IEEE 17TH INTERNATIONAL CONFERENCE ON EMBEDDED AND REAL-TIME COMPUTING SYSTEMS AND APPLICATIONS (RTCSA 2011), VOL 1 Vol. 1 page： 121 - 125 2011

Language：English Publishing type：Research paper (international conference proceedings) Publisher：IEEE COMPUTER SOC

The paper proposes an intuitive device selecting interface called "Vib-connect" for device collaboration. Recent progress in Information Technology allowed various devices to join wireless network. As a result, various ways of device collaborations and services became possible. However, interfaces for selecting devices are still complicated for end-users and far from being intuitive. To solve this problem, we propose "vib-connect", an interface which enables users to select device intuitively by pasting a vib-connector, a small vibration-based device. Vib-connect solves these problem by implementing these device information as a unique vibration pattern. By keeping smartphones or any kind of vibration generating device, end-users can easily select devices to collaborate. We implement a prototype, and through the evaluation, we confirmed high accuracy in vibration pattern detection and high usability satisfaction by nonexpert users. By using "Vib-connect", users without any technical expertize can easily select devices to collaborate with.

DOI： 10.1109/RTCSA.2011.48

Web of Science

Scopus

Transferring information from mobile devices to personal computers by using vibration and accelerometer Reviewed

Takuro Yonezawa, Tomotaka Ito, Hideyuki Tokuda

UbiComp'11 - Proceedings of the 2011 ACM Conference on Ubiquitous Computing page： 487 - 488 2011

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

We propose a simple interaction to transfer information on smart phone to laptop/tablet PCs. We often encounter the situation that we need to send URL, which is preliminary accessed in mobile devices, from mobile devices to personal computers (PCs) to see the web page with wider screen. To support this information transfer, we utilize combination between vibrator in smart phones and accelerometer in laptop/tablet PCs. URL information is encoded to vibration patterns, and the patterns are detected and decoded by accelerometer in PCs. We demonstrate the interaction's efficiency and reasonability with actual products. © 2011 Authors.

DOI： 10.1145/2030112.2030184

Scopus

C-1-Symmetric Rh/Phebox-Catalyzed Asymmetric Alkynylation of alpha-Ketoesters Reviewed

Ohshima Takashi, Kawabata Takahito, Takeuchi Yosuke, Kakinuma Takahiro, Iwasaki Takanori, Yonezawa Takayuki, Murakami Hajime, Nishiyama Hisao, Mashima Kazushi

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION Vol. 50 ( 28 ) page： 6296 - 6300 2011

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Angewandte Chemie - International Edition

Thinking outside the box: A newly developed C1-symmetric Rh/Phebox complex efficiently catalyzed the asymmetric alkynylation of α-ketoester 1 with various aryl and alkyl substituted terminal alkynes to provide the corresponding chiral tertiary propargylic alcohols with up to 99 % ee (see scheme; TMS=trimethylsilyl). Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

DOI： 10.1002/anie.201100252

Web of Science

Scopus

Lupe: Information Access Method based on Distance between User and Sensor Nodes using AR technology Reviewed

Takimoto, T; Karatsu, Y; Yonezawa, T; Nakazawa, J; Takashio, K; Tokuda, H

UBICOMP'11: PROCEEDINGS OF THE 2011 ACM INTERNATIONAL CONFERENCE ON UBIQUITOUS COMPUTING page： 479 - 480 2011

Transferring Information from Mobile Devices to Personal Computers by Using Vibration and Accelerometer Reviewed

Yonezawa, T; Ito, T; Tokuda, H

UBICOMP'11: PROCEEDINGS OF THE 2011 ACM INTERNATIONAL CONFERENCE ON UBIQUITOUS COMPUTING page： 487 - 488 2011

Lupe: Information access method based on distance between user and sensor nodes using AR technology Reviewed

Takuya Takimoto, Yutaka Karatsu, Takuro Yonezawa, Jin Nakazawa, Kazunori Takashio, Hideyuki Tokuda

UbiComp'11 - Proceedings of the 2011 ACM Conference on Ubiquitous Computing page： 479 - 480 2011

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

This paper proposes the information access method that is based on the distance between users and objects. In Addition, demonstrate Lupe system, which visualizes WSN status information utilizing our method. The evaluative experiment shows that our method is useful in where a number of sensors are setup. As a result our method and Lupe system enable to easily brows WSN status information for end-user. © 2011 Authors.

DOI： 10.1145/2030112.2030180

Scopus

LECTES : A Low Energy Consumption Time Estimation Scheme for Wireless Sensor Networks

米川賢治, 米澤拓郎, 中澤仁

情報処理学会研究報告 Vol. 2010 ( 2 ) page： 6p 2010.8

LECTES : A Low Energy Consumption Time Estimation Scheme for Wireless Sensor Networks

YONEKAWA Kenji, YONEZAWA Takuro, NAKAZAWA Jin, TOKUDA Hideyuki

IEICE technical report Vol. 110 ( 130 ) page： 41 - 46 2010.7

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

This paper proposes a low energy consumption time estimation scheme for wireless sensor networks (WSNs) called LECTES. In WSN applications, drift of wireless sensor nodes' clocks is one of the most critical issues when processing data. Many researchers have been challenging this problem by proposing time synchronization protocols, such as FTSP, TPSN and RBS. LECTES does not synchronize sensor nodes' clocks, instead, it estimates the sensing time by subtracting the time taken to process data from the reception time of packets. We implemented LECTES on MAC layer of Iris mote, and confirmed that it achieves the average accuracy of 0.488μs as opposed to 1.618μs with FTSP in single hop. The evaluation results further proved that in comparison to FTSP, LECTES 1)increased sensor nodes' lifetimes by 19.8%, 2)decreased the growth of error per hop from 0.694μs to 0.256μs in a 9 hop network, and 3)decreased the compiled program size by 8,046 bytes of ROM and 452 bytes of RAM.

CiNii Books

Middleware for Detection Indecision

ARAKI Takayoshi, YONEZAWA Takuro, NAKAZAWA Jin, TAKASHIO Kazuki, TOKUDA Hideyuki

IEICE technical report Vol. 109 ( 338 ) page： 13 - 18 2009.12

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

The advancement of information technology provides customers various ways to purchase products, and large number of customers are buying products online rather than buying them at brick-and-motor stores. In spite of that, customers are stimulated to purchase products at brick-and-motor stores through the use of QR code and digital cash. It is said that customers will be more encouraged to buy products at brick-and-motor stores by adapting new technologies, such as RFID and electronic device. In consequence, firing clerks and less jobs being required are resulting in less communication between customers and clerks. Communication between customers and clerks increases the chance of customers purchasing products, and enables customers to the choose most desired products. Thus, in order to improve the convenience of brick-and-motor stores, it is important to encourage clerks to have communication with customers. Although, there is a proper timing to wait on a customer, and there is a great chance of making customers feel uncomfortable as a result of wrong timing or way of service. In order to solve this problem, we aim to assist customers and brick-and-motor stores by detecting customers' "indecision" when purchasing products.

CiNii Books

SOEML: Smart object events modeling language based on temporal intervals Reviewed

Yonezawa T.

International Journal of Multimedia and Ubiquitous Engineering Vol. 4 ( 3 ) page： 73 - 92 2009.12

FASH: Detecting tiredness of elders Reviewed

Yonekawa K., Yonezawa T., Nakazawa J., Tokuda H.

INSS2009 - 6th International Conference on Networked Sensing Systems 2009.12

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：INSS2009 - 6th International Conference on Networked Sensing Systems

This paper proposes Fatigue Alerting SHoes(FASH), a pair of shoes which prevents walking elders from falling accidents. Fatigue is one of the causes of elders encountering falling accidents, thus, FASH detects fatigue of walking people. FASH embeds pressure sensor in shoes to detects tiredness of walking people, and prevent falling accidents by alerting them. ©2009 IEEE.

DOI： 10.1109/INSS.2009.5409908

Scopus

Fatigue Alerting SHoes

YONEKAWA Kenji, YONEZAWA Takuro, YURA Jun'ichi, NAKAZAWA Jin, TAKASHIO Kazuki, TOKUDA Hideyuki

全国大会講演論文集 / 情報処理学会 [編] Vol. 71 ( 3 ) page： "3 - 301"-"3-302" 2009.3

MIDEIN : MIddleware for DEtecting INdecision Reviewed

ARAKI Takayoshi, YONEZAWA Takuro, NAKAZAWA Jin, TAKASHIO Kazuki, TOKUDA Hideyuki

Vol. 71 ( 0 ) page： 303-304 2009.3

Fatigue Alerting SHoes

米川賢治, 米澤拓郎, 由良淳一, 中澤仁, 高汐一紀, 徳田英幸

全国大会講演論文集 Vol. 71 ( 0 ) page： 301 - 302 2009.3

SYNTHETIC STUDIES OF MANGOSTIN DERIVATIVES WITH AN INHIBITORY ACTIVITY ON PDGF-INDUCED HUMAN AORTIC SMOOTH CELLS PROLIFERATION Reviewed

Nishihama, Y; Ogamino, T; Shi, WL; Cha, BY; Yonezawa, T; Teruya, T; Nagai, K; Suenaga, K; Woo, JT; Nishiyama, S

HETEROCYCLES Vol. 77 ( 2 ) page： 759 - 765 2009.2

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

The mangostin derivatives 310, were synthesized by halogenation, electrochemical oxidation, and mCPBA oxidation of α- and γ-mangostins (1, 2). Among them, the hydroxyl 9 and the benzopyran 10 derivatives produced by mCPBA, showed remarkable antiproliferative activities against human aortic smooth muscle cells (HASMC) induced by platelet-derived growth factor (PDGF). © 2009 The Japan Institute of Heterocyclic Chemistry All rights reserved.

DOI： 10.3987/COM-08-S(F)65

Web of Science

Scopus

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Papers - YONEZAWA Takuro