From: rick@cs.arizona.edu (Rick Schlichting)
Newsgroups: comp.research.japan,sci.math.num-analysis
Subject: Kahaner Report: Num. Methods Symp., Sendai Japan, 10-12 June 1992
Date: 23 Jul 92 03:56:34 GMT
Followup-To: comp.research.japan


  [Dr. David Kahaner is a numerical analyst on sabbatical to the 
   Office of Naval Research-Asia (ONR Asia) in Tokyo from NIST.  The 
   following is the professional opinion of David Kahaner and in no 
   way has the blessing of the US Government or any agency of it.  All 
   information is dated and of limited life time.  This disclaimer should 
   be noted on ANY attribution.]

  [Copies of previous reports written by Kahaner can be obtained using
   anonymous FTP from host cs.arizona.edu, directory japan/kahaner.reports.]

To: Distribution
From: 
 David K. Kahaner
 US Office of Naval Research Asia
 (From outside US):  23-17, 7-chome, Roppongi, Minato-ku, Tokyo 106 Japan
 (From within  US):  Unit 45002, APO AP 96337-0007
  Tel: +81 3 3401-8924, Fax: +81 3 3403-9670
  Email: kahaner@cs.titech.ac.jp
Re: Numerical Methods Symposium, Sendai Japan, 10-12 June 1992
20 July 1992
This file is named "num-meth.792"

ABSTRACT. The Twenty-First Symposium on Numerical Methods, held in
Sendai Japan, 10-12 June 1992 (in Japanese) is summarized. (M.Kobayashi)


        The Twenty-First Symposium on Numerical Methods

Organizer: Prof. Hisahi Nara, Director
           Tohoku University
           Education Center for Information Processing
           Kawauchi, Sendai 980 Japan
            Tel: +81 22-221-5967; Fax: +81 22-268-5392
            Email: NARA@JPNTOHOK.BITNET

Location:  Nobiru ( near Sendai ) Japan
Date:      June 10-12, 1992

This summary was provided to me by
        Dr. Mei Kobayashi
        IBM Japan Ltd
        5-19 Sanbancho Chiyoda-ku Tokyo 102 Japan
         Tel: 81+3-3228-8287, Fax: 81+3-3265-4251
         Email: MEI@TRLVM.VNET.IBM.COM
Some, not all, the speakers have English language versions of their
work, although almost all speak good to very good English. Interested
readers should contact me for advice about printed copies of the topic
material. All of the talks were associated with a short paper or
extended abstract. Talks were 15-20 minutes in length, just enough time
to present ideas which have the potential of becomming full papers, but
were "not yet developed or polished enough for formal publication".


The twenty first Symposium on Numerical Methods began and proceeded
exactly according to schedule with typically Japanese organizational
precision. An impressive and long program extended into after dinner
hours, but since many of the participants were long-time friends, an
atypically hyperactive audience asked many questions and made many
interesting comments. Many thanks and congratulations to Professor Nara
and the organizational staff for putting together a warm, friendly and
enjoyable workshop which succesfully brought together nearly one hundred
participants to exchange ideas and information.

This particular symposium grew out of a long and unusual tradition.
Originally, a small group of scientists in the Tokyo area assembled on a
regular basis to exchange ideas which were not developed or polished
enough for formal publication. The group was much smaller so the
tradition of starting up informal discussions anytime ( during lectures,
meals, even baths ! ) developed.  The friendly and realxed atmosphere
has continued throughout the years with participants sharing rooms and
gathering in a dining room as in a somewhat civilized college dormitory.
Several years ago industrial scientists outnumbered professors and their
students, however in recent years the situtation has reversed itself.
Perhaps partly out of politeness, several professors expressed to me
their hope that industrial scientists would participate in greater
numbers.  Returning to the history, the symposium remained relatively
small until it was held in Nagoya, when the organizer decided to invite
Kansai (Kyoto) area scientists as well. Since then, the number of
participants has numbered close to one hundred.  Another unusual point
is that the symposium is not necessarily held on a regular basis;
sometimes there are a few meetings during a given year, sometimes none.
A meeting is held whenever the organizer (appointed at the previous
meeting) feels that there are enough speakers with new ideas to allow
for worthwhile discussions. Perhaps the best tradition of all is the
free-format (no strict rules) policy and the complete dependence of the
symposium on efforts of a distinguished staff of volunteers. The warmth
and generosity of the organizers is appreciated by all and is most
definitely contagious and helps establish new lines of communication and
friendships.

The twenty-first symposium was held near the Nobiru Station about 30
minutes from Sendai. The area is famous for its seafood and beautiful
natural scenery (particularly its autumn foliage) and the Tanabata
Festival in the late summertime. Tohoku U. in Sendai is currently one of
the great national universities in Japan.  During the main banquest
ceremonies, Prof. Nara most graciously volunteered to host the twenty-
second symposium, which he anticipates will be sometime next year.

A very loose translation of the titles of talks and speakers is given
below. Please accept my apologies for any unintentional mistranslations,
which are due to my poor Japanese. It is probably best to contact the
speaker directly regarding copies of papers and details of the talk.

1.  R. Suda ( Tokyo U., Eng. )
    Simulation of the Josephson junction problem using a Gauss-Seidel
    method with pre-processing

2.  Y. Nagoya, T. Ushijima ( U. Electro-Comm. )
    Stability of differentiation of the four dimensional
    dispersion problem

3.  T. Murata ( Kanazawa U., Eng. )
    Numerical analysis of a time-dependent nonlinear dispersion
    equation

4.  H. Imai, Shiu, M. Natori ( Tsukuba U. ), Kawarada ( Chiba U. )
    Applications of the spectral problem to free-boundary problems

5.  Y. Takemoto ( Yokka-ichi U. )
    Study of staggered lattice configurations for general coordinate
    systems.

6.  S. Fujino ( ICFD ), Takeuchi ( Kao Research Labs. )
    Mathematical considerations of the memory bank conflict problem

7.  K. Mogi ( Gunma U. ), N. Watanabe, S. Baba ( U. Electro-Comm. )
    Numerical aspects of the memory bank conflict problem

8.  L. Li ( Aomori U. ), Nakamura ( Tohoku U., Eng. )
    The convergence of asynchronous iterations for the fixed point of a
    splitting operator

9.  M. Kobayashi ( IBM Research )
    A comparison study of fourier and wavelet approximations

10. Yoshikawa, H. Nagasuka ( Nihon U., Eng. )
    Roundoff error analysis of the Conjugate Gradient Method

11. Tatebe ( Tokyo U. )
    Preconditioned Conjugate Gradient Methods using multigrids

12. T. Kitagawa ( Tsukuba U., Info. Sci. )
    A mathematical model of meaning and its applications

13. H. Sugiura, T. Torii ( Nagoya U., Eng. )
    3,4,5,6 dimensional good lattice point formulae

14. T. Tanabe ( Suuri System Inc. )
    High-speed computation of very large eigenvalue problems
    using the Lanczos method

15. H. Togawa ( Nihon U. )
    Double shift of inverse iterative methods

16. I. Ninomiya ( Chuubu U. )
    A block decomposition method for symmetric tri-diagonal matrices

17. T. Torii, T. Sakurai ( Nagoya U., Eng. )
    An application of Sun's Theorem for solving algebraic equations

18. L. Li ( Aomori U., Eng. ), T. Torii ( Nagoya U., Eng. )
    A high-speed algortihm for solving  n-th degree polynomial
    equations

19. N. Shinohara ( Tokushima U. )
    An existence and uniqueness theorem and error analysis for
    the Van der Pol equation.

20. K. Ozawa ( Tohoku U. )
    Stability and implentation of the Adams multi-step linear method
    with non-negative coefficients

21. Murobuse ( Shoku-gyo Kun-ren U. ), H. Nagasaka ( Nihon U. )
    An extrapolation method for ODEs

22. C. Suzuki ( Shizuoka Science and Technology U. )
    Numerical integration of Euler-Maclaurin type formulae:
    applications to the Hermite-Birkhoff differential equation

23. T. Kojima ( Shizuoka Science and Technology U. )
    Compound numerical methods for algebraic equations

24. E. Shiu, T. Sakurai, H. Sugiura, T. Torii ( Nagoya U., Eng. )
    On mathematical computations for text processing

25. T. Nodera ( Keio U., Eng. )
    My Tex Notebook

26. S. Uchida ( Kanazawa U. ) Naokazu Yamaki ( System Planning Research Inst. )
    LAMAX-S

27. H. Hiyama, K. Sato ( Kanazawa U. )
    MPPACK, a multiple precision computational software package

28. H. Hiyama ( Kanazawa U. )
    Multiple precision systems based on object oriented C++

29. H. Yamashita ( KK Suuri System )
    An efficient method for nonlinear optimization

30. S. Hongo ( Senshu U. ), K. Kubota ( Chuuo U. ), Naokazu Yamaki ( System
    Planning Research Institute ), M. Miyata ( Aoyama Gakuin )
    On the numerical software package ASNOP ( computer languages )

31. S. Hongo ( Senshu U. ), K. Kubota ( Chuuo U. ), Naokazu Yamaki ( System
    Planning Research Institute ), M. Miyata ( Aoyama Gakuin )
    On the numerical software package ASNOP ( automatic
    differentiation )

32. T. Sasaki ( Tsukuba U. )
    An introduction to approximate algebra

33. M. Iri ( Tokyo U., Eng. ), K. Kuboto ( Chuuo U., Eng. )
    Remarks on matrix inversion, sensitivity analysis, etc. from
    the standpoint of numerical differentiation

--------------------------END OF REPORT---------------------------------
Newsgroups: comp.dsp