Kazunori Shimamura

Kochi University of Technology, Kamikawa, Hokkaidō, Japan

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Publications (11)0 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: In this paper, we discuss the effectiveness of a new human interface device for PC user support. Recently, as the Internet utilization rate has increased every year, the usage of PCs by elderly people has also increased in Japan. However, the digital divide between elderly people and PC beginners has widened. To eliminate this digital divide, we consider improving the users’ operability and visibility as our goal. We propose a new hemispherical human-computer-interface device for PCs, which integrates a hemispherical sub-display and a pointing device. Then we evaluate the interface device in terms of its effectiveness of operability and visibility. As seen from the analyses of a subjective evaluation, our interface device obtained good impressions results for both elderly people and PC beginners.
    Human-Computer Interaction. Interaction Techniques and Environments - 14th International Conference, HCI International 2011, Orlando, FL, USA, July 9-14, 2011, Proceedings, Part II; 01/2011
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    ABSTRACT: We have developed the TERAKOYA learning system, which helps students study actively anywhere on a local area network (LAN) linked to multipoint remote users. However, if many students frequently sent their questions to the teacher, it is very difficult to correspond to quickly answer that for the teacher. In addition, the teacher hardly clarifies how much each student understood because he cannot watch students’ face and reaction. This paper discusses the graphical user interface (GUI) system that is used a little ingenuity to prioritize students’ screens through variably changing the GUI interface on the teacher’s PC. The aspect of window that was displayed as thumbnails of the students’ PC screen was zoomed dynamically each thumbnail by their understanding level. By sorting out their priorities on the teacher’s PC screen, the teacher can timely observe the students’ work and support their thinking process.
    HCI International 2011 - Posters' Extended Abstracts - International Conference, HCI International 2011, Orlando, FL, USA, July 9-14, 2011, Proceedings, Part II; 01/2011
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    ABSTRACT: The present paper discusses a new collaborative TERAKOYA learning system for remedial education. TERAKOYA learning system provides both an interactive lesson and a small private school just like the 18th-century Japanese basic school called TERAKOYA. This system helps students study actively anywhere on campus, and it provides an interactive evening lesson in the dormitory using Tablet PCs on a WLAN and custom-built applications. Furthermore, the proposed learning system was implemented in a girl's dormitory over one year. After conducting the test, the feasibility and practicality of the system in helping the students study actively and willingly was verified by employing a handwritten electric whiteboard with verbal communication through a headset.
    01/2010;
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    ABSTRACT: We propose the implementation of a new learning environment that can utilize the computer for things as basic as taking lecture notes in a conventional lecture. Though active learning is visible to the user, as computers have become ubiquitous, they will support the teacher during a lecture and the student in the class. We aim to nurture motivation for learning, study skills, cooperativeness, and a sense of responsibility as an engineer. Our goal is to realize and practice a computer supported learning system that cultivates a faculty for active learning. This paper discusses the practice of a new collaborative learning system, which helps students study actively anywhere on campus. This system realizes a new computer supported interactive and collaborative learning system for dynamically providing an interactive lesson to each student. We have distributed a tablet PC to all students for their individual use. The system is composed of tablet PCs, a server machine, and software realizing collaboration between the tablet PCs over our WLAN. In the system, the tablet PCs for teachers and students are interactively connected through a server using WLAN, which covers our campus.
    Information and Telecommunication Technologies, 2008. APSITT. 7th Asia-Pacific Symposium on; 05/2008
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    ABSTRACT: A Web browser based interface that specialized in numerical calculation was developed. It includes functions to set parameters, execute calculations and display results for numerical calculations. The calculation result is put in a database, so we can browse, sort or search the results by a variety of keywords. It allows us to share the results with other users. Our intent is to provide an efficient means for setting parameters and result analysis. In this system, Web clients can use the interface on any platform and there is no load for the client side, because PHP scripts on the server handle all of the processes for numerical calculation. Moreover, a Web browser interface for mobile phones was developed to browse the calculation results practically and to reduce idle computer time. It is possible to set parameters and execution through the special Web form for mobile phones. In addition to this, the server informs the mobile phone user when the calculation is finished. Through this process, we realized effective utilization of computer resources.
    Information and Telecommunication Technologies, 2008. APSITT. 7th Asia-Pacific Symposium on; 05/2008
  • Takumi Yamaguchi, Kazunori Shimamura, Haruya Shiba
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    ABSTRACT: This paper presents a basic configuration of a system that provides dynamic delivery of full-motion video while following target users in ubiquitous computing environments. The proposed system is composed of multiple computer displays with radio frequency identification (RFID) tag readers, which are automatically connected to a network via IP, and RFID tags worn by users and some network servers. We adopted a passive tag RFID system. The delivery of full-motion video uses adaptive broadcasting. The system can continuously deliver streaming data, such as full-motion video, to the display, through the database and the streaming server on the network, moving from one display to the next as the user moves through the network. Because it maintains the information about the user’s location in real time, it supports the user wherever he or she is, without requiring a conscious request to obtain their information. This paper describes a prototype implementation of this framework and a practical application.
    Human-Computer Interaction. HCI Intelligent Multimodal Interaction Environments, 12th International Conference, HCI International 2007, Beijing, China, July 22-27, 2007, Proceedings, Part III; 01/2007
  • T. Yamaguchi, H. Shiba, K. Shimamura
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    ABSTRACT: This paper presents a basic configuration of the system that provides dynamically delivery services of full-motion video while following target users around like a shadow in ubiquitous computing environments. The proposed system is composed of multiple computer displays attaching RFID tag reader, which has been automatically connected on the network via IP, and RFID tag on the user and some network servers. We adopted a passive tag RFID System. The delivery of full-motion video utilized an adaptive broadcasting. The system can continuously deliver a streaming data like full-motion video to the display, which the user moves one after another, through the database server and the streaming server on the network. Consequently, it is possible to support the user without having his/her conscious act of his/her own request to obtain user’s necessary information in real time. This paper also describes a prototype implementation of the framework and a practical application.
    Information and Telecommunication Technologies, 2005. APSITT 2005 Proceedings. 6th Asia-Pacific Symposium on; 12/2005
  • Takumi Yamaguchi, Haruya Shiba, Kazunori Shimamura
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    ABSTRACT: This paper describes how to mount a new pointing device by which users, who have an existing metaphor for using information appliances, can effectively apply that including Personal Computer (PC). We propose the system wearing the operation lens support, which is called ”OPR-LENS (Operation-Lens)”. The OPR-LENS system is composed of the OPR-LENS module and the OPR-LENS device, and mounted on the server and the viewer software connected via TCP/IP, respectively. The OPR-LENS device forms a temple block suitable for a palm operation. Users’ manipulation can be effectively supported by the effect of the spherical lens with the partial GUI image. This research investigates the evaluation of the OPR-LENS system through mounting a prototype system and implementing the performance evaluation experiment. In addition, the application example when applying to the existing metaphor such as information appliances was shown in this paper.
    Computer Human Interaction, 6th Asia Pacific Conference, APCHI 2004, Rotorua, New Zealand, June 29 - July 2, 2004, Proceedings; 01/2004
  • Source
    Yoshiyuki Komatsu, Kazunori Shimamura
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    ABSTRACT: The traffic of networks is increasing with increase of Internet users by development of the Internet. Thereby, the demand at the reliability and stability of a network becomes larger than ever. However, the present Internet does not guarantee the communication quality because of its best-effort connection principle. For this reason, it is difficult for the Internet to maintain constant communication quality. And especially non-guaranteed Internet makes troubles like distortion and discontinuity in stream Audio-Visual (AV) distributions. In order to solve this problem, the system which can makes an end host grasp communication quality is required. Especially, it is important that an end host efficiently and impartially use a path and prevent congestion by adjust the transfer bit rate according to the path bandwidth. This study proposes a monitoring system which notifies an end host of a path bandwidth dis-tributed impartially according to a traffic situation in real time without heavy load addition. The effectiveness of the proposed system is confirmed by comparing the measurement time and the load of the implementation mounted on the test bed using Perl with these of other measurement tools.
    01/2004;
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    Takumi Yamaguchi, Kazunori Shimamura
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    ABSTRACT: This paper presents an operating device for providing dynamically look-up services and ma-nipulation in ubiquitous computing environments. By using RFID-based tracking systems, it detects the locations of physical entities, such as people or things, and deploys services bound to the entities at proper computing devices near the locations of the entities. The proposed system "OPR-Browser" automatically recognizes the information appliance that can be used for each user. And, it is displayed where it is by the map using a 'Focus+Context' technique. When its appliance is selected by the user selection, it is manipulated through connecting directly via P2P connection. OPR-Browser is composed of the OPR-Browser module on the information appliance, which has been automatically connected on the network via IP, and the OPR-Browser device on the operating device. By operating the OPR-Browser device, users select one of in-formation appliances. By mounting on the telecommunication and the supporting application, the OPR-Browser device can support the user's various operations with the appliance. The OPR-Browser module provides some functions that are to capture images, to operate the target appliance and to automatic retrieve the target appliance. This paper also describes a prototype implementation of OPR-Browser and several practical applications.
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    ABSTRACT: For comfortable information networking it is necessary to provision variety of services for responding the requirements and to flexibly use of the distributed resources。In the "ubiquitous" environmentthe distributed processing is natural to push data for realtime application。The purpose of this research is to establish the "surrounding computing technology"which is evolution of the ubiquitous environment. In this paperan embedded data‑driven firewall processor and a signal processing method that is suitable for an information reproduction are proposed. Abstract : For comfortable information networking, it is necessary to provision variety of services for responding the requirements and to flexibly use of the distributed resources. In the "ubiquitous" environment, the distributed processing is natural to push data for real- time application. The purpose of this research is to establish the "surrounding computing technology", which is evolution of the ubiquitous environment. In this paper, an embed- ded data-driven firewall processor and a signal processing method that is suitable for an information reproduction are proposed.