Faculty Profiles - YONEZAWA Takuro

Papers - YONEZAWA Takuro

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uPackage - A package to enable do-it-yourself style ubiquitous services with daily objects Reviewed

Takuro Yonezawa, Hiroshi Sakakibara, Kengo Koizumi, Shingo Miyajima, Jin Nakazawa, Kazunori Takashio, Hideyuki Tokuda

UBIQUITOUS COMPUTING SYSTEMS, PROCEEDINGS Vol. 4836 page： 240 - + 2007

Language：English Publishing type：Research paper (international conference proceedings) Publisher：SPRINGER-VERLAG BERLIN

This paper explores a suitable service model for realizing domestic smart object applications and proposes a software and hardware package called uPackage to support this model. By attaching a tiny wireless sensor node to users' belongings, users can augment the object digitally and take the object into various services such as status monitoring or preventing lost property. The system provided by uPackage supports users to install and manage such smart object services; it enables users to digitally associate sensor nodes with daily objects, manage the associated information and sensor data, and create various smart object applications without professional skills. Initial demonstration to children indicate that the service model provided by uPackage is easy understandable and increases users' acceptance of the wireless sensor node technology.

DOI： 10.1007/978-3-540-76772-5_19

Web of Science

Scopus

Privacy respected ubiquitous sensor environment Reviewed

Hiroshi Sakakibara, Takuro Yonezawa, Jin Nakazawa, Hideyuki Tokuda

INSS 07: Proceedings of the Fourth International Conference on Networked Sensing Systems page： 297 - 297 2007

Synthesis, single crystal X-ray analysis, and TEM for a single-sized Au11 cluster stabilized by SR ligands: The interface between molecules and particles Reviewed

Nunokawa K., Onaka S., Ito M., Horibe M., Yonezawa T., Nishihara H., Ozeki T., Chiba H., Watase S., Nakamoto M.

Journal of Organometallic Chemistry Vol. 691 ( 4 ) page： 638 - 642 2006.2

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Journal of Organometallic Chemistry

An SR-modified Au cluster with a sub-nanometer size, Au <inf>11</inf>(S-4-NC<inf>5</inf>H<inf>4</inf>)<inf>3</inf>(PPh<inf>3</inf>) <inf>7</inf> (1), has been synthesized by NaBH<inf>4</inf> reduction of Au(S-py)(PPh<inf>3</inf>) or by reacting [Au<inf>9</inf>(PPh<inf>3</inf>) <inf>8</inf>](NO<inf>3</inf>)<inf>3</inf> with HS-4-py in good yield. Its molecular structure has been elucidated by single crystal X-ray diffraction, and TEM observation has been achieved for the first time for this size of SR-modified Au clusters. The core structure is best described in terms of an incomplete icosahedron. CV measurements in CH<inf>2</inf>Cl<inf>2</inf> have suggested that the cluster does not coagulate in solution with significant concentration. © 2005 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.jorganchem.2005.09.043

Scopus

Gradually changing expression of singing voice based on morphing Reviewed

Yonezawa T., Suzuki N., Mase K., Kogure K.

9th European Conference on Speech Communication and Technology page： 541 - 544 2005.12

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：9th European Conference on Speech Communication and Technology

We have developed a method for synthesizing a singing voice by gradually changing the musical expression based on speech morphing. This paper shows the advantages of this method in comparison with the approach of binary discrete transformation between two expressions, confirmed by statistical analyses of perception tests. In order to synthesize different expressional strengths of a singing voice, a "normal" (without expression) voice of a particular singer is used as the base of morphing, and three different expressions, "dark," "whispery" and "wet," are used as the target. Through our experiments, we confirmed i) the proposed morphing algorithm effectively interpolates the expressional strength of a singing voice, ii) an approximate equation of the perceptual sense can be used to calculate the morph ratio at a perceptually linear interval, and iii) our gradual transformation method can generate a natural singing voice from the interpolation of two different expressions.

Scopus

Micro Hot-spot Networking Towards Seamless Service Provider Reviewed

IWAI Masayuki, KOTAKE Naohiko, KADOTA Masaya, TAKAHASHI Gen, YONEZAWA Takuro, MOCHIZUKI Yosuke, MOCHIZUKI Masahiro, SHIMIZU Hirobumi, TOBE Yoshito, TAKASHIO Kazunori, TOKUDA Hideyuki

IPSJ SIG technical reports Vol. 2005 ( 32 ) page： 15 - 21 2005.3

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Information Processing Society of Japan (IPSJ)

Research for ubiquitous environment has enabled the creation of Smart Environment within a limited part of an indoor colosed enviroment. However, user s require that this same enviroment can be available within a wider span, thus resulting in the need to extend collaboration of services in remote ubiquitous environments. Our research group (Keio University, Tokyo Denki University, and Tokyo Institute of Technology) has created a seamless service collaboration system called "micro-hot-spot", and will report it in this paper.

CiNii Research

Micro Hot-spot Networking Towards Seamless Service Provider Reviewed

Iwai Masayuki, Kotake Naohiko, Kadota Masaya, Takahashi Gen, Yonezawa Takuro, Mochizuki Yosuke, Mochizuki Masahiro, Shimizu Hirobumi, Tobe Yoshito, Takashio Kazunori, Tokuda Hideyuki

Vol. 2005 ( 28 ) page： 15-21 2005.3

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

CiNii Research

u-Texture: Self-organizable universal panels for creating smart surroundings Reviewed

N Kohtake, R Ohsawa, T Yonezawa, Y Matsukura, M Iwai, K Takashio, H Tokuda

UBICOMP 2005: UBIQUITOUS COMPUTING, PROCEEDINGS Vol. 3660 page： 19 - 36 2005

Language：English Publishing type：Research paper (scientific journal) Publisher：SPRINGER-VERLAG BERLIN

This paper introduces a novel way to allow non-expert users to create smart surroundings. Non-smart everyday objects such as furniture and appliances found in homes and offices can be converted to smart ones by attaching computers, sensors, and devices. In this way, non-smart components that form non-smart objects are made smart in advance. For our first prototype, we have developed u-Texture, a self-organizable universal panel that works as a building block. The u-Texture can change its own behavior autonomously through recognition of its location, its inclination, and surrounding environment by assembling these factors physically. We have demonstrated several applications to confirm that u-Textures can create smart surroundings easily without expert users.

DOI： 10.1007/11551201_2

Web of Science

Scopus

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Papers - YONEZAWA Takuro