SHIBATA, Hajime |
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Faculty, Department/Institute
- Faculty of Letters General Department of Humanities Department of Education and Culture
Academic status (qualification)
- Professor Apr. 1,2004
Position
- Director, Information Technology Center 2009/10/1~2012/9/30
- Director, Information Technology Center 2012/10/1~2016/9/30
- Director, Information Technology Center 2016/10/1~2020/9/30
Undergraduate Degrees・University
- Kyoto University Faculty of EngineeringApplied Mathematics and Physics 1984 Graduated
Graduate Degrees・University
- Kyoto University Master's Degree Program Applied Mathematics and Physics 1986 Completed
Academic Degrees
- Master of Engineering Mar. 1986 Kyoto University
- Doctor of Engineering Jan. 1998 Kyoto University
Homepage Address, E-mail Address
- Homepage Address:http://www2.itc.kansai-u.ac.jp/~jimmy/
Research fields
Research fields | keyword |
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Performance evaluation | |
Statistical methods in data analysis | |
Mobile computing | |
Petri net | |
Information processing |
Research topics
research topic | Query Processing in Mobile Computing Environments |
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Study theme state | Joint research within Japan |
research duration | |
Research Programs | |
keyword | Mobile Computing |
Research field | |
Research Topics Overview |
Research Career
- IBM Japan Ltd./Advisory Systems Engineer 1986/4/1~1994年/3/31
Awards
- Feb. 2,1990
- Technical Excellence Award Dec. 16,1991
- Sep. 1,1992
Academic Associations
所属学会・団体名 | 役職名 (役職在任期間) |
---|---|
The Institute of Electronics, Information and Communication Engineers | |
Information Processing Society of Japan |
Research Publications
No. | Type of publication | Date of publication (Date of presentation) | Title | Type of research result | Jointly authored or single authored | Publisher and journal name | Volume number |
---|---|---|---|---|---|---|---|
1 | Papers1 | 2005/8/26~2005,08,26,,, | An Attendance Management System using Mobile Phones | Academic Journal | Single-Author | Proceedings of 2005 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM'05) | 590-592 |
2 | Papers1 | 2003/3/31~2003,03,31,,, | A Study of Economical and Educational Effects of e-Learning | In-house publication | Single-Author | ||
3 | Papers1 | 2002/11/8~2002,11,08,,, | A LEARNING MODEL OF COMPUTER SCIENCE EDUCATION FOR LIBERAL ARTS STUDENTS | Academic Journal | Co-author | Proceedings of 32nd ASEE/IEEE Frontiers in Education Conference (FIE2002) | pp.F3G-2 - F3G-7 |
4 | Papers1 | 2001/3~2001,03,00,,, | Mobiview: A Database Integration Mechanism Based on Database View for Mobile Computing | Academic Journal | Co-author | IEICE Transactions on Information and Systems | Vol.E84-D, No.3, pp.340-347 |
5 | Papers1 | 1999/1~1999,01,00,,, | Maintenance of Location-Dependent Views in Mobile Database Environments | Academic Journal | Co-author | IEICE Trsnsactions | |
6 | Papers1 | 1997/8/21~1997,08,21,,, | Performance Analysis of an Adaptive Query Processing Strategy for Mobile Computing | Academic Journal | Co-author | Proceedings of 1997 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM'97) | |
7 | Papers1 | 1997/8~1997,08,00,,, | Performance Analysis of an Adaptive Query Processing Strategy for Mobile Databases | Academic Journal | Co-author | IEICE Transactions on Communications | |
8 | Papers1 | 1997/7~1997,07,00,,, | An Adaptive Query Processing Strategy for Mobile Databases | Academic Journal | Co-author | IEICE Transactions B-I | |
9 | Papers1 | 1997/5~1997,05,00,,, | On Query Processing Strategies for Multiple Mobile Hosts | Academic Journal | Co-author | IEICE Transactions B-I | |
10 | Research report21 | 1997/1/23~1997,01,23,,, | On Performance of an Adaptive Query Processing Strategy for Mobile Databases | Academic Journal | Co-author | IEICE Technical Report | |
11 | Papers1 | 1996/3/28~1996,03,28,,, | Query Processing for Multiple Mobile Hosts in Mobile Computing Environments | Academic Journal | Co-author | PROCEEDINGS OF THE 1996 IEICE GENERAL CONFERENCE | |
12 | Research report21 | 1996/1/24~1996,01,24,,, | An Adaptive Query Processing Strategy for Mobile Detabases | Academic Journal | Co-author | IPSJ SIG Notes | |
13 | Research report21 | 1995/10/6~1995,10,06,,, | On Query Processing for Multiple Mobile Hosts | Academic Journal | Co-author | IEICE Technical Report | |
14 | Papers1 | 1993/10/7~1993,10,07,,, | Rightsizing of Host Computer System via Upsizing | Academic Journal | Single-Author | ||
15 | Papers1 | 1991/10/26~1991,10,26,,, | Modeling and Performance Evaluation of Priority Job Processing via Stochastic Petri Net | In-house publication | Single-Author | IBM Corporation ITIRC | |
16 | Papers1 | 1989/5/26~1989,05,26,,, | Modeling and Performance Evaluation of Priority Job Processing Procedure with the Common Job Class via Stochastic Petri Net | Academic Journal | Co-author |
PapersAn Attendance Management System using Mobile PhonesIn refereedAcademic JournalSingle-AuthorSHIBATA HajimeProceedings of 2005 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM'05)590-5922005/8/26~IEEEIt is a well-known fact that e-Learning costs the teaching staff a lot of workloads.
However, it is also known that students like e-Learning classes, are doing well and are satisfied.
We think one of the reasons that students like e-Learning classes resides in using digital equipment.
Operating digital equipment provides a stimulus to the monotonous classes and a sense of participation to the students.
We apply the effect of using digital equipment during a class to improve the percentage of attendance.
On the other hand, recently, especially in Japan, almost all students have mobile phones.
In addition, almost all mobile phones have not only e-mail functions but also digital cameras.
In this paper, making good use of both the effect of e-Learning and the students' mobile phones,
a simple and low cost attendance management system is proposed.
PapersA Study of Economical and Educational Effects of e-LearningUnrefereedIn-house publicationSingle-AuthorSHIBATA Hajime2003/3/31~
PapersA LEARNING MODEL OF COMPUTER SCIENCE EDUCATION FOR LIBERAL ARTS STUDENTSIn refereedAcademic JournalCo-authorSHIBATA Hajime;Harumi KASIWAGI;Yasunori MOTOMURA;Kazuhiro OHTSUKIProceedings of 32nd ASEE/IEEE Frontiers in Education Conference (FIE2002)pp.F3G-2 - F3G-72002/11/8~ASEE/IEEEWith the development of information technology,the goals of computer science ducation for liberal arts in Japan have been extended, that is, not only to help them
develop their computer operation skills and acquire their basic knowledge of the mechanism but also to help students develop their scientific thinking skills and understand the roles of information technologies. Students in non-computer engineering major have pieces of knowledge on applications such as the products made with information technologies. They would also acquire the knowledge of the fundamental mechanism of computer and communication systems, by taking advantage of lectures. Therefore, it is important to organize the structure of their scientific knowledge by connecting those kinds of knowledge. This paper shows how we should organize various kinds of knowledge, and propose a learning style for this purpose. In addition to that, we show that mailing list contributes to construct knowledge as a tool for cooperative learning.
BookUnrefereedCo-author2002/4~
LectureSHIBATA,Hajime2001/7/11~
PapersIn-house publicationSingle-AuthorSHIBATA,Hajime2001/3~
PapersMobiview: A Database Integration Mechanism Based on Database View for Mobile ComputingIn refereedAcademic JournalCo-authorSHIBATA Hajime;Toru MURASE;Masahiko TSUKAMOTO;Bo-jiang LIU;Shojiro NISHIOIEICE Transactions on Information and SystemsVol.E84-D, No.3, pp.340-3472001/3~IEICE
PapersMaintenance of Location-Dependent Views in Mobile Database EnvironmentsIn refereedAcademic JournalCo-authorSHIBATA Hajime;Akira NAKAAKI;Toru MURASE;Masahiko TSUKAMOTO;Shojiro NISHIOIEICE Trsnsactions1999/1~As technologies of wireless communication and computer hardware have been rapidly growing, users can access to a wide variety of information from anywhere using handy terminals with wireless communication equipment. In such environments, it has been often pointed out that, if we have the facility which enables us to choose automatically the available database depending on the location of users, there are many applications using this facility. Based on our model MobiView which we proposed in our previous paper, the location-dependent views provide this facility. However, as for the database access realizing location-dependent views, few performance evaluation studies have so far been done. Therefore, in this paper, we consider several possible methods for maintaining location-dependent views and analyze their performance in the traffic point of view. As the result, we show how the most appropriate method depends on several network conditions such as the frequency of mobility.
BookUnrefereedMonographCo-author1998/10/2~
LectureSHIBATA,Hajime1998/6/7~
BookUnrefereedSingle-AuthorSHIBATA,Hajime1998/4~
PapersPerformance Analysis of an Adaptive Query Processing Strategy for Mobile ComputingIn refereedAcademic JournalCo-authorSHIBATA Hajime;Masahiko TSUKAMOTO;Shojiro NISHIOProceedings of 1997 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM'97)1997/8/21~IEEEIn this paper, we consider query processing strategies which operates over mobile network protocols. To begin with, we introduce five fundamental location update methods. They are the single broadcast notification(SBN), the double broadcast notification(WBN), the single default notification(SDN), the double default notification(WDN), and the no notification(NN). As a network protocol, each method is strong in performance in some system environment, but weak in others. In practical situations, where various kinds of applications are used for various purposes, however, it is required to use a single method. Then, we propose an adaptive query processing strategy where these five location update methods can be dynamically selected. Moreover, we analyze the performance of this adaptive query processing strategy via the Markov chain. We also use the statistical approach to estimate the traffic of individual hosts. Finally, we show the efficiency of our proposed strategy over a wide area of system environments.
PapersPerformance Analysis of an Adaptive Query Processing Strategy for Mobile DatabasesIn refereedAcademic JournalCo-authorSHIBATA Hajime;Masahiko TSUKAMOTO;Shojiro NISHIOIEICE Transactions on Communications1997/8~Many network protocols for routing messages have been proposed for mobile computing environments. In this paper, we consider the query processing strategy that operates over these network protocols. To begin with, we introduce five fundamental location update methods based on ideas extracted from the representative network protocols. They are the single broadcast notification(SBN), the double broadcast notification(WBN), the single default notification(SDN), the double default notification(WDN), and the no notification(NN). As a network protocol, each method is strong in performance in some system environment, but weak in others. In practical situations, where various kinds of applications are used for various purposes, however, it is required to use a single method. We therefore propose an adaptive query processing strategy where these five location update methods can be dynamically selected. Moreover, we analyze the performance of this adaptive query processing strategy via the Markov chain. We also use the statistical approach to estimate the traffic of individual hosts. Finally, we show the efficiency of our proposed strategy over a wide area of system environments.
PapersAn Adaptive Query Processing Strategy for Mobile DatabasesIn refereedAcademic JournalCo-authorSHIBATA Hajime;Masahiko TSUKAMOTO;Shojiro NISHIOIEICE Transactions B-I1997/7~Many location management methods have been proposed so far for the access to the information stored in portable computers. As for the performance of these access methods, it has been shown that the efficiency of each method fully depends on a given system environment. In this paper, we first propose an adaptive query processing strategy in mobile computing environment, in which several location update methods and query processing methods can be selected dynamically. Then, through analytical performance evaluation studies on this processing strategy, we give a guideline how to choose dynamically these location update and query processing methods.
PapersOn Query Processing Strategies for Multiple Mobile HostsIn refereedAcademic JournalCo-authorSHIBATA Hajime;Masahiko TSUKAMOTO;Shojiro NISHIOIEICE Transactions B-I1997/5~In this paper, we evaluate the performance of five query processing strategies in mobile computing environments, where a client issues a query request to more than one mobile hosts at a time. The considered five strategies are the single broadcast notification(SBN), the double broadcast notification(WBN), the broadcast notification(BQF), the single default notification(SDN), and the double default notification(WDN). As a result of our performance evaluation studies, we show that the optimal strategy varies according to network conditions such as the network topology, the migration rate, the query occurrence rate, and the number of mobile hosts and mobile host servers related to the issued query. Furthermore, we make clear how the number of related mobile host servers depends on the optimal strategy.
Research reportOn Performance of an Adaptive Query Processing Strategy for Mobile DatabasesUnrefereedAcademic JournalCo-authorSHIBATA Hajime;Woo-Joo HWANG;Masahiko TSUKAMOTO;Shojiro NISHIOIEICE Technical Report1997/1/23~
PapersUnrefereedOtherCo-author1996/9/25~
BookUnrefereedSingle-AuthorSHIBATA,Hajime1996/4~
PapersQuery Processing for Multiple Mobile Hosts in Mobile Computing EnvironmentsUnrefereedAcademic JournalCo-authorSHIBATA Hajime;Masahiko TSUKAMOTO;Shojiro NISHIOPROCEEDINGS OF THE 1996 IEICE GENERAL CONFERENCE1996/3/28~
Research reportAn Adaptive Query Processing Strategy for Mobile DetabasesUnrefereedAcademic JournalCo-authorSHIBATA Hajime;Masahiko TSUKAMOTO;Shojiro NISHIOIPSJ SIG Notes1996/1/24~Many location management methods have been proposed so far for the access to the information stored in portable computers. As for the performance of these access methods, it has been shown that the efficiency of each method fully depends on a given system environment. In this paper, we first propose an adaptive query processing strategy in mobile computing environment, in which several location update methods and query processing methods can be selected dynamically. Then, through analytical performance evaluation studies on this processing strategy, we give a guideline how to choose dynamically these location update and query processing methods.
Research reportOn Query Processing for Multiple Mobile HostsUnrefereedAcademic JournalCo-authorSHIBATA Hajime;Masahiko TSUKAMOTO;Shojiro NISHIOIEICE Technical Report1995/10/6~In this paper, we evaluate the performance of query processing in mobile computing environment for the following five strategies: single broadcast notification(SBN), double broadcast notification(WBN), broadcast notification(BQF), single default notification(SDN) and double default notification(WDN). We especially consider the situation that a client issues query request to more than one mobile host server at a time. As the result of our performance evaluation studies, we show that the optimal strategy varies according to network conditions such as network topology, migration rate, query occurrence rate, and the number of mobile host servers queried at a time. Finally, we clarify the influence of this number of mobile host servers on the optimal strategy.
PapersRightsizing of Host Computer System via UpsizingUnrefereedAcademic JournalSingle-AuthorSHIBATA Hajime1993/10/7~
BookUnrefereedMonographCo-authorSHIBATA Hajime;NISHIO/Shojiro1992/5/30~
Technical LetterUnrefereedOtherCo-authorSHIBATA,Hajime1992/4/13~
PapersModeling and Performance Evaluation of Priority Job Processing via Stochastic Petri NetUnrefereedIn-house publicationSingle-AuthorSHIBATA HajimeIBM Corporation ITIRC1991/10/26~
Technical letterUnrefereedOtherCo-authorSHIBATA,Hajime1991/3/8~
PapersModeling and Performance Evaluation of Priority Job Processing Procedure with the Common Job Class via Stochastic Petri NetUnrefereedAcademic JournalCo-authorSHIBATA Hajime;NISHIO/Shojiro1989/5/26~
Research reportUnrefereedOtherCo-authorSHIBATA,Hajime1988~
Research Activities Overseas
- Kansai University's Overseas Research Program(long term)2003Canada University of VICTORIA
Participation in International Conferences
- 1997 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM'97) Aug.20,1997-Aug. 22,1997
- IBM Poughkeepsie Performance Conference Oct.26,1991-Oct. 26,1991
- 32nd ASEE/IEEE Frontiers in Education Conference (FIE2002) Nov.6,2002-Nov. 9,2002
- 2005 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM'05) Aug.24,2005-Aug. 26,2005
Courses Taught
- Information Processing Studies
- Communication Network Theory
- Introductory Lecture : Gateway to Learning
- Elementary Seminar in Education and Culture I
- Studies in Education and Culture IV
- Graduation Seminar in Information Science
- Graduation Seminar in Information Science
- Computer Science (Presentation Skills)
- Computer Science (Database Management System)
- ICT Entry-level Benchmark
- Cross-Departmental Lecture
- ICT Basics
- Research Ethics for Information Oriented Society
- Studies in Education and Culture II
- Computer Science (Data Science)
- Intermediate Seminar in Education and Culture I
- Intermediate Seminar in Education and Culture II
- Introductory Lecture : Gateway to Learning
- Computer Science II (Spreadsheet Skills)
- Computer Science II (Database Management System)
- Intermediate Seminar in Information Science
- Studies in Information Science and Culture Studies II
- Studies in Information Science and Culture Studies IV
- Computer Science (Spreadsheet Skills)
- Ethics for Information Oriented Society
- Personal Information
- Research Activities
- Research Activities
- Community Service
- Courses Taught