[news.announce.conferences] 1990 NA Conference on Logic Programming

herme@cs.utexas.edu (Manuel Hermenegildo) (09/18/90)

   THE 1990 NORTH AMERICAN CONFERENCE ON LOGIC PROGRAMMING, NACLP90

                     Hyatt Regency, Austin, Texas
                    October 29 - November 1, 1990



           NACLP90, the North American Conference on Logic
           Programming,  is a primary forum for presenting
           research results in all areas of logic program-
           ming, ranging from  theory  to  applications to
                           implementation.

                         conference chairman
                    Carlo Zaniolo, MCC-Austin, USA

                     local arrangements chairman
                     Roger Nasr, MCC-Austin, USA

                           program chairmen
                 Saumya Debray, Univ. of Arizona, USA
	  Manuel Hermenegildo, Univ. of Madrid (UPM), Spain

                           keynote speaker
                  Robert Boyer, Univ. of Texas, USA

                           invited speakers
                    J. Barwise, Indiana Univ., USA
                 Ugo Montanari, Univ. of Pisa, Italy
                   F. Pereira, AT&T Bell Labs, USA

                           banquet speaker
                 Raymond Smullyan, Indiana Univ., USA

                             sponsored by
                The Association for Logic Programming

                         in cooperation with
                           IEEE and ESPRIT



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______________________________________________________________________



                          program committee

                  Hassan Ait-Kaci, DEC-Paris, France
		 Krzysztof R. Apt, CWI Amsterdam, NL
                     Mats Carlsson, SICS, Sweden
                 Saumya Debray, Univ. of Arizona, USA
                 Doug DeGroot, Texas Instruments, USA
                      Atsuhiro Goto, ICOT, Japan
                 Steve Gregory, Imperial College, UK
	  Manuel Hermenegildo, Univ. of Madrid (UPM), Spain
                        Joxan Jaffar, IBM, USA
                      Ken Kahn, Xerox PARC, USA
                  L. V. Kale, Univ. of Illinois, USA
                  Paris Kanellakis, Brown Univ., USA
                 Vipin Kumar, Univ. of Minnesota, USA
                Kenneth Kunen, Univ. of Wisconsin, USA
                  Giorgio Levi, Univ. of Pisa, Italy
                 Jack Minker, Univ. of Maryland, USA
                  Gopalan Nadathur, Duke Univ., USA
                  Richard O'Keefe, RMIT,  Australia
             Raghu Ramakrishnan, Univ. of Wisconsin, USA
                   Vijay Saraswat, Xerox PARC, USA
                  Stuart Shieber, Harvard Univ., USA
                Hidehiko Tanaka, Univ. of Tokyo, Japan
                   Evan Tick, Univ. of Oregon, USA


                         Far East Coordinator
                 Koichi Furukawa, ICOT, Tokyo, Japan

                         European Coordinator
                Francesca Rossi, Univ. of Pisa, Italy

                         Publicity Chairwoman
                      Fosca Giannotti, MCC,  USA

                         Workshop Coordinator
                David S. Warren, SUNY-Stony Brook, USA




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______________________________________________________________________

                     MONDAY, OCTOBER 29, MORNING
______________________________________________________________________


* REGISTRATION,    9:00am

* OPENING REMARKS, 9:15am, room A
        Carlo Zaniolo, MCC, Austin, USA
        Saumya Debray, U. of Arizona, USA
        M. Hermenegildo, U. of Madrid (UPM), Spain

* KEYNOTE ADDRESS, 9:30-10:30am, room A
        "Reasoning about Programs",
        by Robert Boyer, Univ. of Texas, USA
        Chair: Carlo Zaniolo, MCC, Austin, USA

______________________________________________________________________

* SESSION 1A, 11:00am-12:30pm, room A -
        SEMANTICS
        Chair: Joxan Jaffar, IBM, USA

 - "Failure and Success made Symmetric", by  Giorgio  Levi,  Univ.  of
Pisa,  Italy,  Maurizio  Martelli,  Univ.   of  Genova,  and  Catuscia
Palamidessi, Univ. of Pisa, Italy

 -  "Algebraic  Properties  of  a  Class  of Logic Programs", by Paolo
Mancarella, Dino Pedreschi, Marina  Rondinelli  and  Marco  Tagliatti,
Univ. of Pisa, Italy

 - "Stationary Semantics for Disjunctive Logic Programs and  Deductive
Databases", by Teodor Przymusinski, Univ. of Texas at El Paso, USA

______________________________________________________________________

* SESSION 1B, 11:00am-12:30pm, room B
        IMPLEMENTATION I
        Chair: Lee Naish, Univ. of Melbourne, Australia

 -  "Compilation  of  Compound Terms in Prolog", by Micha Meier, ECRC,
FRG

 - "Finding Advantageous  Orders  for  Argument  Unification  for  the
Prolog WAM", by Zerksis D. Umrigar, SUNY-Binghamton, USA

 - "From Decision Trees to Decision Graphs", by Shmuel Kliger and Ehud
Shapiro, Weizmann Inst., Israel

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______________________________________________________________________

                    MONDAY, OCTOBER 29, AFTERNOON
______________________________________________________________________

* TUTORIAL 1A, 2:00-3:30pm, room A
        "Semantics of Concurrent Constraint Programming Languages",
        by Vijay Saraswat, Xerox PARC, USA
        Chair: Seif Haridi, SICS, Sweden

______________________________________________________________________

* TUTORIAL 1B, 2:00-3:30pm, room B
        "Types and Polymorphism",
        by Uday Reddy, Univ. of Illinois, USA
        Chair: John Gallagher, University of Bristol, U.K.

______________________________________________________________________

* SESSION 2A, 4:00pm-5:30pm, room A
        CONSTRAINTS AND THEIR APPLICATIONS
        Chair: Ken Kahn, Xerox PARC, USA

 -  "Partial  Evaluation  of  CLP(FT)", by D. A.  Smith and T. Hickey,
Brandeis Univ., USA

 - "An Intelligent User-Interface Builder based  on  Constraint  Logic
Programming", by H.  Ohwada, F. Mizoguchi, Univ. of Tokyo, Japan

 - "Constraint Logic Programming Applied to Hypothetical Reasoning  in
Chemistry", by J.  Jourdan and R. E. Valdes-Perez, CMU, USA

______________________________________________________________________

* SESSION 2B, 4:00pm-5:30pm, room B
        CONCURRENCY
        Chair: Udi Shapiro, Weizmann Institute, Israel

 -  "Concurrent   Logic   Programming:   Asynchronism   and   Language
Comparison", by F.  S. DeBoer, T.U. Eindhoven,  NL,  C.   Palamidessi,
Univ. of Pisa, Italy

 - "Comparative Semantics for a Parallel Contextual Logic  Programming
Language", by Jean-Marie Jacquet, CWI, NL, and Luis Monteiro, Univ. of
Lisboa, Portugal

 - "Abstract Interpretation for Concurrent  Logic  Languages",  by  C.
Codognet,  LIENS,  France,  P. Codognet , NRIA, France and M. Corsini,
Univ. of Bordeaux, France

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______________________________________________________________________

                     TUESDAY, OCTOBER 30, MORNING
______________________________________________________________________

* TUTORIAL 2A, 9:00-10:30am, room A
        "Deductive Databases - Systems and Languages",
        by Carlo Zaniolo, MCC, USA
        Chair: K.R. Apt, CWI Amsterdam, The Netherlands
______________________________________________________________________

* SESSION 3A, 11:00am-12:30pm, room A
        DATABASES
        Chair: Paris Kanellakis, Brown University, USA

 - "Is There Anything Better than Magic?", by Yehoshua Sagiv, Stanford
Univ., USA

 -   "Reasoning  in  Inconsistent  Databases",  by  Shamim  A.  Naqvi,
Bellcore, USA and Francesca Rossi, Univ. of Pisa, Italy

 - "Null Values in Definite Programs", by Yuan Liu, Univ. of Maryland,
USA

______________________________________________________________________

* SESSION 3B, 11:00am-12:30pm, room B
        IMPLEMENTATION II
        Chair: Mats Carlsson, SICS, Sweden

 - "Generation Type Garbage Collection for Parallel Logic  Languages",
by Toshihiro Ozawa, Akira Hosoi  and  Akira  Hattori,  Fujitsu  Labs.,
Japan

 -  "Memory  Compaction  for  Shared Memory Multiprocessors Design and
Specification", by Patrick Weemeeuw, Univ. of Leuven, Belgium

 -  "FCP  Sequential  Abstract Machine Characteristics for the Systems
Development Workload", by L. Alkalaj, Caltech, USA, T.  Lang  ,  UCLA,
and E. Shapiro, Weizmann Institute, Israel

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______________________________________________________________________

                    TUESDAY, OCTOBER 30, AFTERNOON
______________________________________________________________________


* INVITED TALK, 2:00-3:00pm, room A
        "Prolog and Natural Language Processing",
        by Fernando Pereira, Bell Labs, USA
        Chair: A. Goto, ICOT, Japan

______________________________________________________________________

* SESSION 4A, 3:30-5:00pm, room A
        PARTIAL EVALUATION
        Chair: Hassan Ait-Kaci, DEC-Paris RL, France

 -  "A  Procedure  for  the  Partial Evaluation of Logic Programs", by
Kerima Benkerimi and John W. Lloyd, Univ. of Bristol, UK

 - "Partial Evaluation for  Hierarchies  of  Logic  Theories",  by  M.
Bugliesi, ENIDATA, Italy, E.  Lamma and P. Mello,  Univ.  of  Bologna,
Italy

 - "The Mixtus  Approach  to  Automatic  Partial  Evaluation  of  Full
Prolog", by Dan Sahlin, SICS, Sweden

______________________________________________________________________

* SESSION 4B, 3:30-5:00pm, room B
        CONSTRAINTS
        Chair: Pascal Van Hentenryck, Brown Univ., USA

 -   "Computational   Complexity   and  Constraint  Logic  Programming
Languages",  by Jim Cox, Ken McAloon and Carol Tretkoff, CUNY Brooklyn
College, USA

 -  "Meta  Programming  as  Constraint Programming", by Pierre Lim and
Peter J.  Stuckey, Univ. of Melbourne, Australia

 - "Janus: A step  towards  distributed  Constraint  Programming",  by
Vijay A. Saraswat, Ken  Kahn  ,  Xerox  PARC,  USA,  and  Jacob  Levy,
Technion, Israel.

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______________________________________________________________________

                    WEDNESDAY, OCTOBER 31, MORNING
______________________________________________________________________

* TUTORIAL 3A, 9:00-10:30am, room A
        "Constraint Logic Programming-from Theory to Applications",
        by Pascal Van Hentenryck, Brown Univ., USA
        Chair: P. Codognet, INRIA, France

______________________________________________________________________

* TUTORIAL 3B, 9:00-10:30am, room B
        "Parallel Implementation of Prolog",
        by Andrzej Ciepielewski, SICS, Sweden
        Chair: Bharat Jayaraman, U. of Buffalo, USA

______________________________________________________________________

* SESSION 5A, 11:00am-12:30pm, room A
        THEORY
        Chair: Dino Pedreschi, U. of Pisa, Italy

 - "Operational and Denotational Semantics of Rewrite Programs", by M.
P. Bonacina and J.  Hsiang, SUNY at Stony Brook, USA

 - "Towards More Efficient Loop Checks", by Roland N.  Bol,  CWI,  The
Netherlands

 - "Negative Logic Programs", by S. Greco and  D.   Sacca,  Univ.  of
Calabria, Italy

______________________________________________________________________

* SESSION 5B, 11:00am-12:30pm, room B
        PROGRAM ANALYSIS
        Chair: Maurice Bruynooghe, K. Univ. Leuven, Belgium

 - "The Benefits of Global Flow  Analysis  for  an  Optimizing  Prolog
Compiler", by P. Van Roy , Univ. of California at Berkeley,  USA,  and
A.  M. Despain, Univ. of Southern California, USA.

 - "An Algebraic Framework for  Abstract  Interpretation  of  Definite
Programs", by R. S.  Kemp and G. A. Ringwood, Imperial College, UK

 - "Analysis of Constraint Logic Programs", by K.  Marriott, IBM, USA,
and H. Sondergaard, Univ. of Melbourne, Australia.

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______________________________________________________________________

		   WEDNESDAY, OCTOBER 31, AFTERNOON
______________________________________________________________________

* INVITED TALK, 2:00-3:00pm, room A
        "An Algebraic Semantics of Logic Programs as Structured
        Transition Systems",
        by A.  Corradini and U. Montanari,  Univ. of Pisa, Italy
        Chair: M. Hermenegildo, Univ. of Madrid (UPM), Spain

______________________________________________________________________

* SESSION 6A, 3:30-5:00pm, room A
        PROOF THEORY
        Chair: Gopalan Nadathur, Duke Univ., USA

 - "On the Elimination of Redundant Derivations During Execution",  by
A. Richard Helm, IBM Yorktown Heights, USA

 - "Avoiding Duplicate Proofs", by Bruce Spencer, Univ.  of  Waterloo,
Canada

 -  "The Logical Structure of Sequential Prolog", by James H. Andrews,
Univ. of Edinburgh, UK

______________________________________________________________________

* SESSION 6B, 3:30-5:00pm, room B
        PARALLELISM I
        Chair: John Conery, U. of Oregon, USA

 - "Optimizing Or-Parallelism with And-Parallelism", by  Gopal  Gupta,
Univ. of Bristol, UK, and Bharat Jayaraman, SUNY at Buffalo, USA

 -  "Joining AND Parallel Solutions in AND/OR Parallel Systems", by L.
V. Kale and B.  Ramkumar, Univ. of Illinois, USA

 -   "Scheduling  and  Variable  Assignment  in  the  Parallel  Parlog
Implementation", by Jim Crammond, Imperial College, UK

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______________________________________________________________________

                    THURSDAY, NOVEMBER 1
______________________________________________________________________

* INVITED TALK, 9:30-10:30am, room A
        "Hyperproof:  An Excursion in Situated Logic",
        by J. Barwise, Indiana Univ., USA
        Chair: S. Debray, U. of Arizona, USA
______________________________________________________________________

* SESSION 7A, 11:00am-12:30pm, room A
        NEGATION
        Chair: Teodor Przymusinski, Univ. of Texas at El Paso, USA

 - "A Characterization of  Non-Floundering  Logic  Programs",  by  Kim
Marriott,  IBM  Yorktown  Heights,  USA,  Harald Sondergaard, Univ. of
Melbourne, Australia, and Philip Dart, DSTO, Australia.

 - "Adding Negation-as-Failure to Intuitionistic  Logic  Programming",
by Anthony J. Bonner and L. Thorne McCarty, Rutgers Univ., USA

 - "On Constructive Negation for Disjunctive Logic Programs", by Jorge
Lobo, Univ. of Maryland, USA

______________________________________________________________________

* SESSION 7B, 11:00am-12:30pm, room B
        PARALLELISM II
        Chair: K. Furukawa, ICOT, Japan

 -  "Handling  of  Speculative  Work in OR-Parallel PROLOG: Evaluation
Results", by Bogumil Hausman, SICS, Sweden

 -  "On  Criteria for Or-parallel Execution Models of Logic Programs",
by  Gopal  Gupta,  Univ. of Bristol, UK, and Bharat Jayaraman, SUNY at
Buffalo, USA

 - "The Muse Or-Parallel Prolog Model and its Performance", by  Khayri
A. M. Ali and Roland Karlsson, SICS, Sweden

______________________________________________________________________




______________________________________________________________________

                          TUTORIAL SESSIONS
______________________________________________________________________


1A.     "Semantics of Concurrent Constraint Programming Languages",
        Vijay  Saraswat, Xerox PARC, USA

This  tutorial surveys work in semantics of concurrency, with focus on
the model theory of concurrent constraint  programming  languages.  In
this   light,   we   present   various   models  for  determinate  and
indeterminate cc languages and discuss their inter-relationships.


1B.     "Types and Polymorphism",
        Uday Reddy, Univ. of Illinois, USA

This  tutorial  reviews the major directions in designing type systems
for logic programming languages including those based on  conventional
mathematical notions of types, those using regular tree sets as types,
and those based  on  "descriptive"  types.   Connections  with  extant
theories of types and type inferencing issues are discussed.

2A.     "Deductive Databases -- Systems and Languages",
        Carlo Zaniolo, MCC, USA

In order to provide a logic  programmer  with  the  skills  needed  to
develop  applications  on deductive database systems, we will contrast
their semantics, enabling technology and programming styles  to  those
of Prolog.

3A.     "Constraint Logic Programming-from Theory to  Applications",
        Pascal Van Hentenryck, Brown Univ., USA

This tutorial overviews, theory, design and applications of CLP in the
computation  domains  of  Linear Rational (Real), Arithmetics, Boolean
Algebra, Finite Domains, Presburger Arithmetics and data structures.

3B.     "Parallel Implementation of Prolog",
        Andrzej Ciepielewski, SICS, Sweden

This  tutorial   will   overview   approaches   and   techniques   for
parallelizing  Prolog,  including  AND-,  OR-  and   AND/OR-   models,
shared/distributed  memory,  side- effects, compile time analysis, and
some existing prototypes.



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______________________________________________________________________

SOCIAL EVENTS
Sunday, October 28, 7:00-9:00pm
        OPENING RECEPTION
        Held  in the Hyatt Regency Hotel, this complimentary reception
offers an opportunity to meet other attendees before the four days  of
the conference.

Wednesday, October 31, 7:00pm
        CONFERENCE HALLOWEEN BANQUET
        Held in Hyatt Regency Hotel, this formal dinner will include a
speech  by Professor Raymond Smullyan, on "Puzzles and Paradoxes" -- a
fitting prelude to the Halloween extravanganza on Sixth Street.

Other Events will be announced at a later date.

AREA ATTRACTIONS AND WEATHER INFORMATION
        The conference hotel is in a midtown location on the shore  of
Town  Lake, and offers miles of jogging and cycling nature trails. The
city's central business district is just six blocks away.
        Austin  is  a  lush  green city in the heart of the Texas Hill
Country.  The  many surrounding lakes and rivers make Austin appealing
for swimming and boating.
        With  one of the largest concentrations of artists in the USA,
Austin's live entertainment and  arts  scene  is  thriving.  On  Sixth
Street  and at Antone's, they say, one can find the best blues west of
the Mississippi.
        The  nearby  Sixth  Street  is  also renowned for its colorful
Halloween parade.
        In the Fall, Austin's weather is mild, with an average daytime
temperature of 80F  and  an  average  nighttime  temperature  of  58F.
General Information

LOCATION
        all conference events take place at:
                Hyatt Regency Hotel
                208 Barton Springs
        Austin, Texas 78704, USA
        ph.: +1-512-477-1234 / 1-800-233-1234
        fax: +1-512-480-2089

CORRESPONDENCE
        mailing address:
                NACLP90
                MCC
                3500 West Balcones Center Drive
                Austin, Texas 78759-6509 USA

        E_mail address: NACLP90@MCC.COM
        fax :+1-512-338-3600
        phone: +1-512-338-3405
______________________________________________________________________

______________________________________________________________________

TRANSPORTATION
        Travel Arrangements: the official travel agency for NACLP90 is
The Travel Center  (phone:  1-800-229-1141  or  +1-512-250-1141,  fax:
+1-512-250-8154). Discounts up to 50% on domestic air fares  and  auto
rentals  are  available through The Travel Center (airlines: American,
Continental and Delta; car rentals: National, Avis and Alamo).

        Airport  Transportation:  visitors  arriving  at  the   Austin
Municipal Airport can reach the Hyatt  Regency  by  the  complimentary
shuttle service provided by the hotel.

ACCOMMODATIONS
        NACLP90  has  a  block  reservation at the Hyatt Regency Hotel
with the following per room rates (tax included):

        Single (one person):     $78
        Double (two persons):    $78

Hotel reservations will not be accepted unless  accompanied  by  first
night deposit. Please refer directly with the hotel for changes in the
arrival date, multiple occupancy and suites.

Cut-off date: October 1, 1990. After the  cut-off  date,  reservations
must be made directly with the Hyatt Regency at regular  hotel  rates.
Cancellations must be made directly with the hotel in order to receive
refunds.  The first night deposit will be forfeit unless the hotel  is
notified before 6:00 pm of the arrival date.

Student accommodations: the double occupancy rate  is  intended  as  a
moderately priced accommodation for students. The Organizing Committee
will provide a pairing service for students unable to find a roommate.
Students who want to use this service should  return  the  reservation
form together with first night deposit ($39) by September 20, 1990.

Reservation  request:  the  enclosed  form  should  be received by the
NACPL90 organization before the cut-off date.

CONFERENCE REGISTRATION
        Please return the enclosed registration form  to  the  NACLP90
organization.  The registration desk will be open on  Sunday,  October
28, 1990, 4:00-9:00 pm, and during the conference.

Registration fees will cover the technical sessions of the conference,
tutorials,  opening  reception,  banquet and one copy of the published
proceedings per registrant. The banquet is not included in the student
registration.    Banquet  tickets  for  guests  and  students  can  be
purchased at the Conference Registration Desk.

Registration  confirmation:  a  confirmation  will  be  sent  to  each
registrant after the registration.

Cancellation: to be eligible for a refund of  the  registration  fees,
written  notification  of  cancellation must be received no later than
October  1,  1990.  An administrative fee of $25 will be deducted from
the refund.
______________________________________________________________________


______________________________________________________________________

                    NACLP90 HOTEL RESERVATION FORM
                    ------------------------------

                               Mail to:
                     NACLP90 Organizing Committee
                                 MCC
                   3500 West Balcones Center Drive
                     Austin, Texas 78759-6509 USA

Name: ................................................................

Address: .............................................................

         .............................................................

City: ......................... State: ............. Zip:.............

Country:..............................................................

Telephone Number: ....................................................

 - For attendees NOT using the pairing service :
[ ]     Please reserve the following room at the Hyatt Regency of
        Austin (mark as appropriate):
        [ ]     single room at the rate of $78 per day
        [ ]     double room at the rate of $78 per day
        (Include $78 for first night deposit)

 - For students using the pairing service :
[ ]     Please arrange for me to share a room with another student at
        the Hyatt Regency of Austin at a rate of $39 per day. My
        gender is (mark as appropriate):
        [ ]     female
        [ ]     male
        (Include $39 for first night deposit)

 - Dates:
        Arrival Date: ................... Time: ......................
        (check-in time: 3:00pm)
        Departure Date: ................. Time: ......................
        (check-out  time: 12:00 noon)

 - Form of payment:
        [ ]     check (payable to Hyatt Regency, Austin, US currency only)
        [ ]     credit card (VISA, Mastercard, Diner's, Am. Express,
                Carte Blanche):
                card type:       .....................................
                card no.:        .....................................
                expiration date: .....................................

______________________________________________________________________


______________________________________________________________________

                      NACLP90 REGISTRATION FORM
                      -------------------------

                               Mail to:
                     NACLP90 Organizing Committee
                                 MCC
                   3500 West Balcones Center Drive
                     Austin, Texas 78759-6509 USA


Name: (last)  ........................................................

      (first) ........................................................

Affiliation:  ........................................................

Address: .............................................................

         .............................................................

City: ......................... State: ............. Zip:.............

Country:..............................................................

Telephone/Telex: .....................................................

Fax:             .....................................................

E_mail:          .....................................................

Registration fees:

                  Preregistration         Late Registration
                  (before Oct. 1, 90)     (after Oct. 1, 90)
Members(*):       [ ] $250                [ ] $300
Non-Members:      [ ] $300                [ ] $360
Students:         [ ] $140                [ ] $180

(*) ALP, IEEE Computer Society

Include check or money order payable to NACLP90 - US currency only

Return address:

                NACLP90
                MCC
                3500 West Balcones Center Drive
                Austin, Texas 78759-6509 USA

______________________________________________________________________

______________________________________________________________________

			  NACLP90 WORKSHOPS

			Call for Participation

  The North American Conference  on  Logic  Programming  will  take
  place  at  the  Hyatt  Recency Hotel, in Austin, Texas on October
  29-November 1, 1990. The following worshops have  been  scheduled
  to follow the conference on November 1 (afternoon) and November 2:


		 PARALLEL EXECUTION OF LOGIC PROGRAMS
			   Bharat Jayaraman
		       <bharat@cs.Buffalo.EDU>

	    NON-MONOTONIC REASONING AND LOGIC PROGRAMMING
	 V.S.Subrahmanian, A. Nerode, D. Pedreschi, W. Marek,
		  <vs@tarski.cs.umd.edu>: submission
		  <marek@ms.uky.edu>: participation

	    ARCHITECTURES OF SYSTEMS FOR LOGIC PROGRAMMING
			  Jonathan W. Mills
		    <jwmills@iuvax.cs.indiana.edu>

		    HIGHER ORDER LOGIC PROGRAMMING
			   Gopalan Nadathur
			<gopalan@cs.duke.edu>

			    Ulrich Furbach
	       <uli@lan.informatik.tu-muenchen.dbp.de>

			 DEDUCTIVE DATABASES
			     Jan Chomicki
		    <chomicki@antares.cis.ksu.edu>

SUBMISSIONS:  Contact  the  chairmen  of the workshops of interest for
detailed information on topics covered by  the  workshops,  and  their
particular   submission   requirements--abstracts    or    extentended
			      abstracts.

PARTICIPATION:  Attendance  is  open  to  all   NACLP90   registrants.
However, attendance in each workshop  will  be  limited  to  ensure  a
closer interaction. Please, inform the workshop chairmen immedi- ately
	       if you are interested in participating.