Details of a Researcher - OKOSHI Tadashi

Papers - OKOSHI Tadashi

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Towards health exercise behavior change for teams using life-logging

Y Nishiyama, T Okoshi, T Yonezawa, J Nakazawa, K Takashio, H Tokuda

2014 IEEE 16th International Conference on e-Health Networking, Applications … (IEEE) 397 - 403 2014

Joint Work, Accepted, ISSN 9781479966448

© 2014 IEEE. Recent technological trends on mobile/wearable devices and sensors have been enabling increasing number of people to collect and store their 'life-logs' easily in their daily lives. Beyond exercise behavior change of individual user, our research focus is on the behavior change of teams, based on life-logging technologies and information sharing. In this paper, we propose and evaluate six different types of information sharing model among team members for their exercise promotion, leveraging concepts of 'competition' and 'collaboration'. According to our experimental mobile web application for exercise promotion and extensive user study among 64 total users for three weeks, the model with 'external competition' technique resulted the most effective performance for competitive teams such as sport teams.

Access to Document (DOI)

FOCUS: A Usable & Effective Approach for OLED Display Power Management

Tan Kiat Wee, Okoshi Tadashi, Misra Archan, Balan Rajesh Krishna

Proceedings of the 2013 ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp '13) (ACM Press) 573 - 582 2013.09

Joint Work, Accepted, ISSN 9781450317702

In this paper, we present the design and implementation of Focus, a system for effectively and efficiently reducing power consumption of OLED displays on smartphones. These displays, while becoming exceedingly common still consume significant power. The key idea of Focus is that we use the notion of saliency to save display power by dimming portions of the applications that are less important to the user. We envision Focus being especially useful during low battery situations when usability is less important than power savings. We tested Focus using 15 applications running on a Samsung Galaxy S III and show that it saves, on average, between 23 to 34% of the OLED display power with little impact on task completion times. Finally, we present the results of a user study, involving 30 participants that shows that Focus, even with its dimming behaviour, is still quite usable. Copyright © 2013 ACM.

Access to Document (DOI)

DEMO of Focus: A usable & effective approach to OLED display power management

TK Wee, T Okoshi, A Misra, RK Balan

ACM HotMobile 2013

FOCUS: a usable & effective approach to OLED display power management

KW Tan, T Okoshi, A Misra, RK Balan

Proceedings of the 2013 ACM international joint conference on Pervasive and … 2013

ACM HotMobile 2013 demo: Focus: a demo on usable & effective approach to OLED display power management

TK Wee, T Okoshi, A Misra, RK Balan

ACM SIGMOBILE Mobile Computing and Communications Review 17 (3), 5-6 (ACM) 17 ( 3 ) 5 2013

Joint Work, Accepted

Access to Document (DOI)

Application as a Sensor (AaaS) Approach for User Attention Sensing

T Okoshi, J Nakazawa, H Tokuda

The 2013 ACM International Joint Conference on Pervasive and Ubiquitous … (ACM Press) 315 2013

Joint Work, Accepted

Access to Document (DOI)

SNS のアライアンス (特集地域 SNS を考える)

大越匡，小林隆生，濱野智史

智場, 34-39 (国際大学グローバルコミュニケーションセンター) ( 106 ) 34 2006

Joint Work

Tactics-based remote execution for mobile computing

RK Balan, M Satyanarayanan, SY Park, T Okoshi

Proceedings of the 1st international conference on Mobile systems … (ACM) 273 - 286 2003

Joint Work, Accepted

© 2003 by The USENIX Association. Remote execution can transform the puniest mobile device into a computing giant able to run resource-intensive applications such as natural language translation, speech recognition, face recognition, and augmented reality. However, easily partitioning these applications for remote execution while retaining application-specific information has proven to be a difficult challenge. In this paper, we show that automated dynamic repartitioning of mobile applications can be reconciled with the need to exploit application-specific knowledge. We show that the useful knowledge about an application relevant to remote execution can be captured in a compact declarative form called tactics. Tactics capture the full range of meaningful partitions of an application and are very small relative to code size. We present the design of a tactics-based remote execution system, Chroma, that performs comparably to a runtime system that makes perfect partitioning decisions. Furthermore, we show that Chroma can automatically use extra resources in an overprovisioned environment to improve application performance.

Access to Document (DOI)

Adaptation: This Won't Hurt a Bit!

RK Balan, JP Sousa, T Okoshi, J Flinn, D Narayanan, T Matsutsuka, ...

2002

Smart space laboratory project: Toward the next generation computing environment

T Okoshi, S Wakayama, Y Sugita, S Aoki, T Iwamoto, J Nakazawa, ...

IWNA 2001

Joint Work, Accepted

AMRB: Toward Location Migration Transparency of Services

Harashima Noriyuki, Okoshi Tadashi, Nakazawa Jin, Tobe Yoshito, Tokuda Hideyuki

Proceedings of Eigth International Conference on Parallel and Distributed Systems (ICPADS '01) 305 2001

Joint Work, Accepted

AMRB: Toward location and migration transparency of services

N Harashima, T Okoshi, J Nakazawa, Y Tobe, H Tokuda

Proceedings. Eighth International Conference on Parallel and Distributed … (Proceedings of the Internatoinal Conference on Parallel and Distributed Systems - ICPADS) 305 - 312 2001

In this paper, we present a new mobility-support model for applications, Application Module Request Broker (AMRB). We focus on two types of mobility: host mobility and application code mobility. These two types of mobility dynamically change the binding between applications name and location in the network. AMRB conceals these changes of binding to reduce a complexity in development of applications. In AMRB, we deal with mobile application codes that communicate with each other as Application Modules (AMs). AMRB provides AM's service transparent communication for applications by using a specifier which does not need to include any network location information. Furthermore, applications can use AM's service transparently of migration by exploiting location management mechanism. In this paper, we describe the design and implementation of AMRB and some evaluations. Also, we demonstrate a sample application that AMRB is effective for developing mobile sensor type applications.

A Top-down Integration Scheme for Networked Appliances using VNA Markup Language

Nakazawa Jin, Okoshi Tadashi, Tobe Yoshito, Tokuda Hideyuki

Proceedings of IEEE Third Workshop on Networked Appliances (IWNA '01) 2001

Joint Work, Accepted

; Media Translation Based on QoS Requirement of Devices and Services

JUNI YURA, T OKOSHI, JIN NAKAZAWA, H TOKUDA

Jisedai Saiba Supesu no Kenkyu Heisei 12 Nendo Haiteku, Risachi, Senta … 2001

.HOME プロジェクトにおける情報家電コンピューティング

徳田英幸, 中島達夫, 森川博之, 斉藤健, 西尾信彦, 戸辺義人, 中澤仁, 大越匡

情報処理学会全国大会講演論文集 2001

Joint Work

.HOME プロジェクトにおける情報家電コンピューティング