Information Systems Laboratory 
Hidesada Kanda Professor 
Qun Jin Associate Professor 
Kazuyoshi Mori Assistant Professor 
There are three facultymembers in the Information Systems Laboratory: Prof. Hidesato Kanda, Prof. Qun Jin and Prof. Kazuyoshi Mori, being engaged in research works related to the fundamental theories and advanced applications of information systems. They seek to exploit the rich interdependence between theory and practice in their works.
Prof. Kanda has been studying applied mathematics and science, especially numerical grid generation using partial di??erential equations. By transforming a physical region with complex geometry to a simpler computational region, one removes the complication of the shape of the physical region from the problem. Such transformations can be viewed as a general curvilinear coordinate systems for the physical region.
Prof. Jin has been engaged extensively in research works on Computer Science, Information Systems, and Internet Computing. His recent research interests include online communities, CSCW/CSCL, elearning, intelligent media, humanmedia interaction, communication support, information design, information sharing and knowledge management, socially intelligent agents, peertopeer computing, and various network application systems.
Prof. Mori has been engaged in researchworks on theoretical information systems, including communication systems, control systems andimage processing. He has studied the coordinatefree approachand clari??ed the relationship between the stabilizability and the projectivity of transfer matrices. His recent research interests also cover the parameterization of controllers for multidimensional systems.

[jinqun001:2001]  Ogata H., Yano Y., Furugori N., and Jin Q. Computer Supported Social Networking for Augmenting Cooperation. Computer Supported Cooperative Work: The Journal of Collaborative Computing (Kluwer Academic Publishers), 10(2):189209, 2001. 
[jinqun002:2001]  Jin Q. A Social Virtual Environment for Collaborative Distance Learning. Journal of Computers, 13(2):4659, 2001. 
[jinqun003:2001]  Peng Z. and Jin Q. A Hyper Audio Web System and Its Implementation. Journal of Shanghai University (English Edition), 5(Suppl.):101103, 2001. 
[jinqun004:2001]  in Q., Huang J., and Peng Z. Design of Multilingual Agents for CommunityBased Collaborative Virtual Universities. Journal of Shanghai University (English Edition), 5(Suppl.):248253, 2001. 
[jinqun005:2001]  Huang R., Ma J., and Jin Q. A Shopping Negotiation Agent that Adapts to User Preferences. Lecture Notes in Computer Science (SpringerVerlag), 2252:4556, 2001. 
[jinqun006:2001]  Jin Q. Design of a Virtual Community Based Interactive Learning Environment. Information Sciences (Elsevier Science), 140(1/2):171191, 2002. 
[jinqun007:2001]  Takizawa S. and Jin Q. PeertoPeer File Sharing with Integrated Attribute Descriptions in XML and an Embedded Database Engine. Lecture Notes in Computer Science (SpringerVerlag), 2002. 
[jinqun008:2001]  Shih T.K., Antoni G.D., and Jin Q. et al. A Survey of Distance Education Challenges and Technologies. International Journal of Distance Education Technologies (Idea Group Publishing), 1(1):201210, 2003. 
[kmori001:2001]  K. MORI. Parameterization of Stabilizing Controllers with either Right or LeftCoprime Factorization. IEEE Transactions on Automatic Control, 2001. (To Appear in October 2002) A parameterization method of stabilizing controllers that requires only one of right/leftcoprime factorizations is presented. Asan illustrativemodel, we will consider themultidimensional system with structural stability, for which it is not yet known in general whether or not a doubly coprime factorization always exists. A parameterization of stabilizing controllers for the model is presented. 
[kmori002:2001]  K.MORI. New Algorithm to Construct a Stabilizing Controller
for Linear Systems over Integral Domains. IMA Journal of Mathematical Control and Information, 2001. (To Appear in June 2002)We are concerned with the coordinatefree approach to control systems, which is a factorization approach but does not require the coprime factorizations of plants, provided only that the set of stable causal transfer functions forms an integral domain. We ??rst present a new criterion of the feedback stabilizability. This is a generalization of the criteria in terms of reduced minors given by Sule in 1994 and in terms of quotient ideals given by Shankar and Sule in 1992. We then present an algorithm to construct a stabilizing controller, which is derived from the result given by Lin in 1998. Sule's algorithm and its derivations need to convert some matrices over some ring of fractions to ones over the set of stable causal transfer functions, which may raise the unnecessarily complicated calculations. On the other hand, the algorithm of this paper does not require such a conversion. An illustrative example to construct a stabilizing controller is also presented. 
[kmori003:2001]  K. MORI. Parameterization of Stabilizing Controllers over Commutative Rings with Application to Multidimensional Systems. IEEE Transactions on Circuits and Systems I, 2001. (To Appear in June 2002) The objective of this paper is to present a parameterization method of all stabilizing controllers of the given plant even in the case where there do not exist right/leftcoprime factorizations. The coordinatefree approach is employed to present it. The parameterization is applied to the multidimensional systems with structural stability. 
[kmori004:2001]  K. MORI and K. ABE. Feedback Stabilization over Commutative Rings: Further Study of CoordinateFree Approach. SIAM Journal on Control and Optimization, 39(6):19521973, 2001. This paper is concerned with the coordinatefree approach to control systems. The coordinatefree approach is a factorization approachbut does not require the coprime factorizations of the plant. We present two criteria for feedback stabilizability for MIMO systems in which transfer functions belong to the total rings of fractions of commutative rings. Both of them are generalizations of Sule's results in [SIAM J.Control Optim., 326, 16751695(1994)]. The first criterion is expressed in terms of modules generated from a causal plant and does not require the plant to be strictly causal. It shows that if the plant is stabilizable, the modules are projective. The other criterion is expressed in terms of ideals called generalized elementary factors. This gives the stabilizability of a causal plant in terms of the coprimeness of the generalized elementary factors. As an example, a discrete ??nitetime delay system is considered. 
[kanda001:2001]  H. Kanda. Difference in Critical Reynolds Number between HagenPoiseuille and Plane Poiseuille Flows. Proc. of ASME Fluids Engineering Division  2001, FEDVOL. 256, pages 189196, November 2001. editor: U. S. Rohatgi 
Referred Proceeding Papers 
[jinqun009:2001]  Ma J., Huang R., and Jin Q. Implementation of a Shared Web Brower Using Java Technology. In Proc. ICCPOL, pages 347352, Seoul, Korea, May 2001. 
[jinqun010:2001]  Jin Q., Ma J., Huang R., and Shih T.K. Design Principles of an Open Agent Architecture for a Webbased Learning Community. In Proc. EDMEDIA,, pages 829834, Tampere, Finland, June 2001. 
[jinqun011:2001]  Jin Q. and Ma J. Individualized ELearning and Multimedia Support for Collaborative Virtual Universities (InvitedPaper). In Proc. DMS2001, pages 2431, Taipei, Taiwan, Sep. 2001. 
[jinqun012:2001]  Peng Z., He Y., and Jin Q. A Hyper Presentation approach for Mobile Web Browsing. In Proc. CIT2002, pages 3641, AizuWakamatsu City, Japan, Sep. 2002. 
[jinqun013:2001]  Fujiwara Y., Jin Q., andWang Y. CollaborativeWork Support by Sharing Individual Ideas and Group Schedule. In Proc. CIT2002, pages 6267, AizuWakamatsu City, Japan, Sep. 2002. 
[jinqun014:2001]  Silva P.R., Jin Q., and Herath S. Web Based Agricultural Information and Online Analysis System. In Proc. CIT2002, pages 7378, AizuWakamatsu City, Japan, Sep. 2002. 
[jinqun015:2001]  Igarashi K, Jin Q., and Peng Z. Voice Communication Square: Group Communication Support with VoiceXML. In Proc. HC2002, pages 16, AizuWakamatsu City, Japan, Sep. 2002. 
[jinqun016:2001]  Jin Q., Numata T., Takizawa S., Peng Z., and Ma J. PeertoPeer Information Exchange and Sharing for Learning Communities. In Proc. DMS2002/MDEST2002, pages 436{443, San Francisco, USA, Sep. 2002. 
[jinqun017:2001]  Numata T. and Jin Q. PersontoPerson Information Exchange and Resource Sharing by Using JXTA. In Proc. NPDPA2002, pages 325330, Tsukuba, Japan, Oct. 2002. 
[jinqun018:2001]  Jin Q., Furugori N., Hanasaki K., Asahi N., and Ooi Y. Collaborative Information Browser: Collecting and Organizing Information through Group Collaboration. In Proc. IEEE/SMC2002, Hammamet, Tunisia, Oct. 2002. 
[jinqun019:2001]  Shtykh R. and Jin Q. A PushType Groupware System to Facilitate Small Group Collaboration. In Proc. CW2002, pages 354359, Tokyo, Japan, Nov. 2002. IEEE Computer Society Press. 
[jinqun020:2001]  Jin Q. Individualized Collaboration Support for Online Leaning Communities. InProc. ICCE2002, Auckland, New Zealand, Dec. 2002. IEEE Computer Society Press. 
[kmori005:2001]  K. MORI. Reduction of the Number of Parameters for All Stabilizing Controllers. In Proceedings of the International Symposium on Mathematical Theory of Networks and Systems (MTNS 2002), Notre Dame, Indiana, 2001. (To Appear in August 2002) 
[kmori006:2001]  K. MORI. Reduction of Parameters for All Stabilizing Controllers without Coprime Factorizability. In Proceedings of the forty first SICE Annual Conference (SICE 2002), Osaka, Japan, 2001. (To Appear in August 2002) 
[kmori007:2001]  K. MORI. Feedback Stabilization over Commutative Rings: Further Study of CoordinateFree Approach (invited by SIAM). InProceedings of the 40th IEEE Conference on Decision and Control (CDC'01), pages 47484753, Orlando, Florida, December 2001. 
[kmori008:2001]  K. MORI. An Alternative Parameterization of Stabilizing Controllers with either Right or LeftCoprime Facotorization. In Proceedings of the 40th IEEE Conference on Decision and Control (CDC '01), pages 34653470, Orlando, Florida, December 2001. 
[kmori009:2001]  K. MORI. StablyFreeness and Multidimensional Systems with Structural Stability. InProceedings of 2001 IEEE International Symposium on Circuits and Systems (ISCAS2001), volume II, pages 381384, Sydney, Australia, May 2001. 
[kmori010:2001]  K. MORI. Hermite Ring and Doubly Coprime Factorization in the Factorization Approach. In Proceedings of the Twentieth IASTED International Conference on Modelling, Identification and Control (MIC2001), pages 466{471, Innsbruck, Austria, February 2001. 
[kanda002:2001]  H. Kanda. Difference in Critical Reynolds Number between HagenPoiseuille and Plane Poiseuille Flows. In U. S. Rohatgi, editor, Proc. of ASME Fluids Engineering Division  2001, FEDVOL. 256, pages 189196. ASME (American Society of Mechanical Engineers), ASME, November 2001. 
[kanda003:2001]  H. Kanda. Three di??erent critical Reynolds numbers with Reynolds' experimental apparatus. In Meeting Abstract of the Physical Society of Japan, Vol. 56, Issue 1, Part 2, page 292. Physical Society of Japan, Physical Society of Japan, March 2001. 
[kanda004:2001]  H.Kanda. Model ofTransition fromLaminartoTurbulent Flow. In Donna M. Baudrau, editor, Bulletin of the Americal Physical Society, Vol. 46, No. 10, page 64. APS (American Physical Society), APS, November 2001. 
[kanda005:2001]  H. Kanda. A Model for Occurrence of Turbulence in Hagen and Plane Poiseuille Flows: Experimental Definition. In Y. Inatani, editor, Symposium on Flight Mechanics and Astrodynamics, 2001, pages 138141. ISAS (Institute of Space and Astronautical Science, ISAS, December 2001. 
[jinqun021:2001]  Jin Q., Li J., Zhang N., Cheng J., Yu C., and Noguchi S. (Eds.). Enabling Society with Information Technology. SpringerVerlag, 2001. 
[jinqun022:2001]  Wei D. and Jin Q. (Eds.). Advances in Computer and Information Technology (Proc. 2002 International Conference on Computer and Information Technology). Univ. of Aizu, AizuWakamatsu City, Japan, 2002. 
[jinqun023:2001]  Jin Q. (Ed.). Proceedings of 2002 International Workshop on Multimedia Distance Education Systems and Techonologies (MDEST2002). Knowledge Systems Institue, Chicago, Illinois, USA, 2002. 
[jinqun024:2001]  Jin Q. Development of Learning Communities Using Virtual Environment Media, Ministry of Education and Science GrantinAid: Scientific Research (B), Contract No.12558012, 20002002. 
[kmori011:2001]  K MORI. Scientific Research Grant supported by the Ministry of Education, Item(A) for Young Researchers, No.12780301, 20002001. 
[jinqun025:2001]  Jin Q., March 27 2001. Invited Talk, Learning Communities in the KnowledgeEmergent Society IT Development and IT for Education in Japan , City University of HongKong, Hong Kong, China 
[jinqun026:2001]  Jin Q., May 1416 2001. PCMember, ICCPOL2001(19th International Conference on Computer Processing of Oriental Languages), Seoul, Korea 
[jinqun027:2001]  Invited Talk, CommunityBased Collaborative Virtual Universities, Wuhan University, Wuhan, China 
[jinqun028:2001]  Jin Q., Sep. 1215 2001. PCMember, CIT2001 (International Conference on Computer and Information Technology), Shanghai, China 
[jinqun029:2001]  Jin Q., Sep. 2628 2001. Panelist, DMS2001 Multimedia Macro University, DMS2001 (Seventh International Conference on Distributed Multimedia Systems), Taipei, Taiwan 
[jinqun030:2001]  Jin Q., Oct. 2326 2001. PCMember, IAT2001 (Second International Conference on Intelligent Agent Technology), Maebashi City, Japan 
[jinqun031:2001]  Jin Q., Nov. 2223 2001. Honourabl Advisor,ADCOG21(International Conference on Application and Development of Computer Games in the 21st Century), Hong Kong, China 
[jinqun032:2001]  Jin Q., 2001. External Reviewer, The National Research Council of Canada (NRC) 
[kmori012:2001]  K MORI, 2001. Reviewer, IEEE Transactions on Automatic Control, IEEE 
[kmori013:2001]  K MORI, 2001. Reviewer, IEEE Transactions on Circuits and Systems I, IEEE 
[kmori014:2001]  K MORI, 2001. Reviewer, Journal of Multidimensional Systems and Signal Processing, Kluwer Academic Publications 
[kmori015:2001]  K MORI, 2001. Reviewer, Transactions of the Society of Instrument and Control Engineers, SICE 
[kmori016:2001]  K MORI, 2001. Reviewer, IEEE 2002 Conference on Decision and Control, IEEE 
