Subject: NA Digest V87 #2

From: NA Digest <[email-masked]>
Date: Fri 13 Feb 87 20:20:48 PST

NA Digest   Friday, February 13, 1987   Volume 87 : Issue 2

This weeks Editor: Gene Golub

Today's Topics:

                    na.lastname status message II
                         Mathematics Editors
                         sabbatical planning
                             Office phone
                          notice of NATO ASI
                               At last
                         Lectureship at Bath
                        Public Domian Macsyma
                         SHARE classification
                          Temporary Address

----------------------------------------------------------------------

Date: Mon, 2 Feb 87 16:14:44 PST
From: Mark Kent <[email-masked]>
Subject: na.lastname status message II
To: [email-masked]

(These messages will not become a regular thing.)

Two new improvements have been installed that should improve
reliability.

1) In the past the na.lastname messages were shipped out of Stanford
   from a Vax called Navajo.  Quite a few messages were going nowhere
   because Navajo had trouble either opening connections with hosts
   or maintaining a connection long enough to get the mail through.
   This is probably caused by increased arpanet traffic and lack of
   flexibility in certain parameters in the mail system.  I have noticed
   that other Unix systems have encountered the same problem recently.

   Score, a Dec-20, has better luck with out-going messages.  Maybe
   this is because Score has a direct arpanet connection.  Now, all
   NAnet messages (both broadcast and individual) go through Score.
   (Score also seems more forgiving with addresses.)

2) Previously, messages were shipped out as if the sender was
   daemon@navajo.  This caused some troubles as people could not
   conveniently use the "reply" command to such messages.  Also,
   messages sent to [email-masked] would seem to get
   no reply.  As it turns out, the mailbox for daemon@navajo was
   collecting replies from netlib.  The daemon was also collecting
   mail errors for things further down the line.  So if you sent
   a message to na.xxxx and the corresponding address was unreachable
   for 5 days then you would never know it.

   This has been fixed.  You should now get error messages as if
   you had typed the real address rather than the na.lastname address.
   Hence, if some host is down and your message cannot get through
   then you will know it.

Unfortunately, while I was installing these changes the database
for the na.lastname facility was somehow garbled.  In fact it was empty.
So some of you may have got messages like
"na.someone not recognized"

The database has been fixed and everything should work from now on.

-mark

------------------------------

From: [email-masked]
To: [email-masked]
Date: Sun,  1 Feb 87  23:46:01 EST
Subject: Mathematics Editors

When I gave my talk "Impact of Microprocessors in Numerical Computation"
at the SIAM Seattle meeting in 1984, the last point I made was that
perhaps the most important thing microcomputers would eventually be seen
to have contributed to numerical analysts and other mathematicians would
be the ability to write mathematical notation directly to a screen, giving
the same advantages of "electric paper" that word processing brought to
composing ordinary text documents.
I would like to rave about a program that I have been using the last couple
of weeks with my Macintosh that, though it isn't quite all the way to what
I had in mind, is a quantum leap beyond anything else I have seen. The
program, Mathwrite, by Cooke Publications in Ithaca, NY, has been advertised
in the last couple of issues of MacWorld. It is a full screen WYSIWYG editor
for mathematics, that is, the expressions on the screen look just like those
printed on the pages of textbooks or journals, with Greek and other symbols,
point size differences, etc.
There are two aspects that are important to something like this: first, is it
rich enough to represent all, or at least the vast majority of the notation
you would like to use, and second, can it do this easily enough that there is
some hope you might actually derive the mathematics on the screen, and not
just transcribe into a typesetting system formulae and equations that you
derived the old-fashioned way on paper. The answer, for me, to the first
aspect is yes, this program could represent not just any formula I have ever 
included in a paper I published, but any formula I have ever written in my
private notes when deriving results. For the second aspect, the answer is that
it is close but not there. I find it very easy to enter expressions - while
teaching myself the program I did the last five examples, which include messy
integral, matrix, and partial derivative expressions, in less than 45 minutes.
I even found typos in the originals while doing it. Altogether as big an
advance over document compilers like eqn and tex as they are over typeballs
and lectraset. However I found that editing expressions that already have
been entered still leaves much to be desired.

------------------------------

Date: Wed, 04 Feb 87 10:27:20 cet
To: [email-masked]
From: [email-masked]
Subject: sabbatical planning

an experienced numerical analyst from germany would like to spend a
sabbatical leave in the u.s. preferably not in a university environment
but in a research lab in industry (although the first is possible).
times are march-september 1988 or august 88 - february 1989. he looks
for a contract that requires him to work full-time equivalent but the
pay has to be limited. he has extensive (consulting) experience, areas
include 1. stiff ode's, 2. formula manipulation, 3. ill-posed problems,
4. fast elliptic solvers, 5. parallel algorithms applied to 3. and 4..
if you can suggest places to contact i will forward this information
to him.
hans mittelmann, arizona state university, dept. math., tempe, az 85287.

------------------------------

Mail-From: GOLUB created at  4-Feb-87 14:50:21
Date:      Wed,  4 Feb 87 14:47:13 CST
To: <[email-masked]>
From: <[email-masked]>
ReSent-Date: Wed 4 Feb 87 14:50:20-PST
ReSent-From: Gene H. Golub  <[email-masked]>
ReSent-To: [email-masked]

SUBJECT : INQUIRY
 
   FROM : V.A.SPOSITO    (SL.VAS@ISUMVS)
 
   WHO CAN GIVE ME INFORMATION REGARDING (ALL) AVAILABLE SOFTWARE
(PUBLIC,PURCHASE OR LEASE) FOR SOLVING LARGE-SCALE LINEAR PROGRAMMING
PROBLEMS; ALSO FOR NONLINEAR PROGRAMMING PROBLEMS ?
 
   INFORMATION REGARDING ANY VECTORIZED VERSIONS OF THESE SOFTWARE
PACKAGES WOULD ALSO BE APPRECIATED.
 
 V.A.SPOSITO, DEPT. STATISTICS.,IOWA STATE UNIV.,
 AMES, IOWA 50011

------------------------------

Date: Wed, 4 Feb 87 13:20:21 EST
From: pitt45!wcr%pitt@csnet-relay%pitt
To: [email-masked]
Subject: Office phone

The phone system on our campus has been changed. From now on
my office phone number is
      (412)-624-8381

Werner Rheinboldt
University of Pittsburgh

------------------------------

Date:      Thu,  5 Feb 87 08:23:44 CST
To:        <[email-masked]>
From:      <[email-masked]>

WHO IS JIM GENTLE?
 
  BEEN TRYING TO CONTACT YOU VIA THIS NETWORK.
  SEND ME YOUR PASSWORD.
 
            VINCE ([email-masked])

------------------------------

Date:      Thu,  5 Feb 87 08:25:12 CST
To:        <[email-masked]>
From:      <[email-masked]>

WHO IS MIKE HAND?
 
  BEEN TRYING TO CONTACT YOU VIA THIS NETWORK.
  SEND ME YOUR PASSWORD.
 
            VINCE ([email-masked])

------------------------------

Mail-From: GOLUB created at  5-Feb-87 10:08:15
Date: Thu, 5 Feb 87 09:28:52 CST
From: wmiller@umn-cs (Dr. Willard Miller)
To: [email-masked]
ReSent-Date: Thu 5 Feb 87 10:08:14-PST
ReSent-From: Gene H. Golub  <[email-masked]>
ReSent-To: [email-masked]

               INSTITUTE FOR MATHEMATICS AND ITS APPLICATIONS
                        UNIVERSITY OF MINNESOTA
                             514 Vincent Hall
                           206 Church Street S.E.
                        Minneapolis, Minnesota 55455
                              (612)624-6066

               WORKSHOP ON CONSTITUTIVE EQUATIONS AND MODELING OF
            DISTRIBUTED CRACKING, STRAIN SOFTENING, AND LOCALIZATION

                              February 16-18, 1987

               This workshop is made possible by grants from the
            Army Research Office and the National Science Foundation

                               Tentative Program

Monday, Feb 16 :

8:30 - 9:30 am       Z.P. Bazant          "Problems and Recent Advances in Continuum
                     Northwestern Univ.    Modelling of Softening Damage"

9:30 - 10:15 am      I. Vardoulakis       "Experimental Observations with Respect
                     Univ. of Minnesota    to Strain-Softening and Localization
                                           in Granular Media"

10:30 - 11:30 am                           Discussion

1:00 - 1:45 pm       J.D. Dougill         "A Distributed Damage Model and Some
                     Imperial College      Possible Extensions"

1:45 - 2:30 pm       K. William           "Stabilization and Control of Associated
                     Univ. of Colorado     and Non-Associated Strain-Softening
                                           Computations"

2:30 - 3:15 pm       J.H. Prevost         "Constitutive Equations for Soil"
                     Princeton Univ.
3:30 - 5:00 pm                             Discussion

Tuesday, Feb 17 :

8:30 - 9:15 am       A. Needleman         "Finite Element Analysis of Failure
                     Brown Univ.           Modes in Ductile Solids"

9:15 - 10:05 am      M.A. Crisfield       "Some Experiences with Finite Element
                     Transport & Road      Analyses of Softening Materials"
                     Research Lab

10:30 - 11:30 am                           Discussion

1:00 - 1:45 pm       R. de Borst          "Computational Issues Regarding the
                     Univ. of New Mexico   Solution of Boundary Value Problems
                                           with an Indefinite Stiffness Matrix"

1:45 - 2:30 pm       M. Ortiz             "Finite Element Analysis of
                     Brown Univ.           Localized Failure"

3:00 - 4:30 pm                             Discussion

Wednesday, Feb 18:  

8:30 - 9:15 am       H.L. Schreyer         "Mathematical Formulation and
                     Univ.ofNewMexico       Problems Associated with Strain-
                                            Softening and Localization Based on
                                            Nonlocal Plasticity"

9:15 - 10:00 am      R.D. James            "Prediction of the Microstructures
                     Univ.ofMinnesota       of Solids which Arise from a Phase
                                            Transformation"

10:30 - 11:30                               Discussion

1:00 - 1:45          M. Shearer            "Conservation Laws of Mixed Type
                     North Carolina State   Arising in Elasticity and Porous
                     University             Media Flow"

1:45 - 2:30 pm       E. Aifantis           "Plastic Heterogeneity: Instabilities,
                     Mich. Tech. Univ.      Dislocations, and Deformation Bands"

3:00 - 4:30 pm                              Discussion

------------------------------

Date: Thu, 5 Feb 87 14:42:47 pst
From: Alan J. Laub <[email-masked]>
Posted-Date: Thu, 5 Feb 87 14:42:47 pst
To: [email-masked]
Subject: notice of NATO ASI

            NATO ADVANCED STUDY INSTITUTE (ASI)

"THE APPLICATION OF ADVANCED COMPUTING CONCEPTS AND TECHNIQUES
                  IN CONTROL ENGINEERING"

                   SEPTEMBER 14-25, 1987
                 IL CIOCCO, TUSCANY, ITALY

AIM:  This ASI is intended to bring together  both  academic
and  industrial  control systems engineers who are active or
who wish to become active in  the  application  of  advanced
computing  concepts  and techniques in the design and imple-
mentation of control systems.  The main areas to be  covered
in  the Institute lie at the interface between computer sci-
ence and control and include:

*    expert systems in design and implementation of  control
     systems

*    control of distributed and discrete event processes

*    parallel computing  algorithms  and  architectures  for
     control and signal processing

A series of tutorial-level lectures  will  be  presented  by
invited  lecturers  in  each of these main areas while a few
research-level contributions  will  be  presented  as  short
papers by selected participants.

MAIN LECTURERS:  The main lecturers for the  Institute  will
include:  K.J.  Astrom (Lund), G. Blankenship (Maryland), G.
Cybenko (Tufts), M.J. Denham  (Kingston  Polytechnic),  A.J.
Laub  (UC Santa Barbara), E.H. Mamdani (Queen Mary College),
J.P. Quadrat (INRIA), A.H. Sameh  (Illinois),  P.  VanDooren
(Philips), and W.M. Wonham (Toronto)

FEES:  The attendance fee of $600 includes accommodation and
all  meals for the duration of the Institute (13 nights) and
transportation to and from Pisa airport.

DIRECTORS:  The co-directors of the Institute are:
 Professor Michael J. Denham       Professor Alan J. Laub
 Kingston Polytechnic              Dep't. of Electrical and
 Kingston upon Thames                  Computer Engineering
 KT1 2EE                           University of California
 England                           Santa Barbara,  CA 93106
 Tel. (44) (1) 549-1366            Tel. (1) (805) 961-3616

APPLICATIONS:  Attendance is by  personal  invitation  only.
Further  details  and  application forms are obtainable from
the above.  Please note that Professor Denham will be at the
Santa  Barbara  address  until Apr. 1, 1987.  To ensure full
consideration  by  the  organizing  committee,  applications
should be submitted by May 15, 1987 at the latest.

------------------------------

Mail-From: GOLUB created at  6-Feb-87 08:05:21
Date: Fri 6 Feb 87 08:05:21-PST
From: Gene H. Golub  <[email-masked]>
Subject: At last
To: [email-masked]

At last, you can send msgs to John Butcher in New Zealand. He has
about the longest address known to man! But you can avoid his complicated
address by sending to [email-masked].

Welcome to the WORLD, John.

Gene

------------------------------

Date:        2 Feb 1987 13:15:09 GMT
To:         NA <@Cs.Ucl.AC.UK:[email-masked]>
Subject:    Lectureship at Bath
From:       Alastair Spence <[email-masked]>

      UNIVERSITY OF BATH,U.K.

 SCHOOL OF MATHEMATICAL SCIENCES

 LECTURER IN APPLIED MATHEMATICS

Applications are invited for the above post in the
Mathematics group of the School of Mathematical Sciences,
which is tenable from 1st. September 1987.

The successful candidate will be expected to have interests
which are compatible in broad terms with existing research
activities in continuum mechanics, which relate mainly to
solid mechanics and aspects of wave propagation, though
expertise in mechanics of suspensions or the numerical
solution of partial differential equations would be
welcome.

Duties will include teaching to students within the School
of Mathematical Sciences and in other Schools where a
substantial service teaching commitment exists.

Particular emphasis will be placed however on the successful
candidate's achievements and potential in research.

Salary in the range 8,020 - 15,700 UK pounds.
All lectureships are subject to a probationary period
of three years.

Closing date : 25th. February 1987.

Further particulars from:

     Professor J R Willis,
     School of Mathematical Sciences,
     University of Bath,
     BATH, BA2 7AY
     U.K.

     UK Telephone:   0225 826184  (School Office)
                     0225 826241  (Professor Willis)

or

     Alastair Spence on NANET:    na.spence@su-score

------------------------------

Date:     Fri, 06 Feb 87  15:16 EST
From:     AUGENBAU@UCONNVM
Subject:  Public Domian Macsyma
To:       [email-masked]

  I have been told that there is a DOE public domain version of Maacsyma
around. I would appreciate if anyone could give some information on this.
reply to:
       [email-masked]
or   [email-masked]

------------------------------

Date: Fri, 6 Feb 87 14:55:29 CST
From: [email-masked] (Dr. Willard Miller)
To: [email-masked]

               INSTITUTE FOR MATHEMATICS AND ITS APPLICATIONS
                        UNIVERSITY OF MINNESOTA
                             514 Vincent Hall
                           206 Church Street S.E.
                        Minneapolis, Minnesota 55455
                              (612)624-6066

               WORKSHOP ON CONSTITUTIVE EQUATIONS AND MODELING OF
            DISTRIBUTED CRACKING, STRAIN SOFTENING, AND LOCALIZATION

                              February 16-18, 1987

               This workshop is made possible by grants from the
            Army Research Office and the National Science Foundation

                               Tentative Program

Monday, Feb 16 :

8:30 - 9:30 am       Z.P. Bazant          "Problems and Recent Advances in Continuum
                     Northwestern Univ.    Modelling of Softening Damage"

9:30 - 10:15 am      I. Vardoulakis       "Experimental Observations with Respect
                     Univ. of Minnesota    to Strain-Softening and Localization
                                           in Granular Media"

10:30 - 11:30 am                           Discussion

1:00 - 1:45 pm       J.D. Dougill         "A Distributed Damage Model and Some
                     Imperial College      Possible Extensions"

1:45 - 2:30 pm       K. William           "Stabilization and Control of Associated
                     Univ. of Colorado     and Non-Associated Strain-Softening
                                           Computations"

2:30 - 3:15 pm       J.H. Prevost         "Constitutive Equations for Soil"
                     Princeton Univ.
3:30 - 5:00 pm                             Discussion

Tuesday, Feb 17 :

8:30 - 9:15 am       A. Needleman         "Finite Element Analysis of Failure
                     Brown Univ.           Modes in Ductile Solids"

9:15 - 10:05 am      M.A. Crisfield       "Some Experiences with Finite Element
                     Transport & Road      Analyses of Softening Materials"
                     Research Lab

10:30 - 11:30 am                           Discussion

1:00 - 1:45 pm       R. de Borst          "Computational Issues Regarding the
                     Univ. of New Mexico   Solution of Boundary Value Problems
                                           with an Indefinite Stiffness Matrix"

1:45 - 2:30 pm       M. Ortiz             "Finite Element Analysis of
                     Brown Univ.           Localized Failure"

3:00 - 4:30 pm                             Discussion

Wednesday, Feb 18:  

8:30 - 9:15 am       H.L. Schreyer         "Mathematical Formulation and
                     Univ.ofNewMexico       Problems Associated with Strain-
                                            Softening and Localization Based on
                                            Nonlocal Plasticity"

9:15 - 10:00 am      R.D. James            "Prediction of the Microstructures
                     Univ.ofMinnesota       of Solids which Arise from a Phase
                                            Transformation"

10:30 - 11:30                               Discussion

1:00 - 1:45          M. Shearer            "Conservation Laws of Mixed Type
                     North Carolina State   Arising in Elasticity and Porous
                     University             Media Flow"

1:45 - 2:30 pm       E. Aifantis           "Plastic Heterogeneity: Instabilities,
                     Mich. Tech. Univ.      Dislocations, and Deformation Bands"

3:00 - 4:30 pm                              Discussion

------------------------------

Date: Wed, 4 Feb 87 16:49:20 GMT
From: [email-masked]
To: [email-masked]
Subject: SHARE classification

Can anyone give me a reference to the original source of the
Modified SHARE Classification Index (or why linear equation algorithms
appearing in TOMS are tagged F04)? I seem to remember hearing
that George Forsythe was responsible but I can't find anything
in print.

Thanks in advance,

--
Tim Hopkins,
Computing Laboratory,
University of Kent,
Canterbury CT2 7NF
Kent
U.K.

{ [email-masked] 
  [email-masked]
  [email-masked] }

------------------------------

Date: Mon, 9 Feb 87 15:13:37 EST
From: [email-masked] (frank luk)
To: [email-masked]
Subject: Temporary Address

	I am spending the spring semester at the Thinking Machines Corp.
	My address and phone are
	
	Thinking Machines Corp.
	245 First Street
	Cambridge, MA 02142-1214
	
	617-876-1111
	
	[email-masked]
	
	Frank Luk

------------------------------

End of NA Digest
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