---
_id: '1956'
abstract:
- lang: eng
  text: "\r\nThe plastid genomes of several plants contain ndh genes-homologues of
    genes encoding subunits of the proton-pumping NADH:ubiquinone oxidoreductase,
    or complex I, involved in respiration in mitochondria and eubacteria. From sequence
    similarities with these genes, the ndh gene products have been suggested to form
    a large protein complex (Ndh complex); however, the structure and function of
    this complex remains to be established. Herein we report the isolation of the
    Ndh complex from the chloroplasts of the higher plant Pisum sativum. The purification
    procedure involved selective solubilization of the thylakoid membrane with dodecyl
    maltoside, followed by two anion-exchange chromatography steps and one size-exclusion
    chromatography step. The isolated Ndh complex has an apparent total molecular
    mass of approximately 550 kDa and according to SDS/PAGE consists of at least 16
    subunits including NdhA, NdhI, NdhJ, NdhK, and NdhH, which were identified by
    N-terminal sequencing and immunoblotting. The Ndh complex showed an NADH- and
    deamino-NADH-specific dehydrogenase activity, characteristic of complex I, when
    either ferricyanide or the quinones menadione and duroquinone were used as electron
    acceptors. This study describes the isolation of the chloroplast analogue of the
    respiratory complex I and provides direct evidence for the function of the plastid
    Ndh complex as an NADH:plastoquinone oxidoreductase. Our results are compatible
    with a dual role for the Ndh complex in the chloro-respiratory and cyclic photophosphorylation
    pathways."
acknowledgement: We gratefully acknowledge Dr. A.Carne (Institute of Cancer Research,
  London, U.K.) for help with N-terminal sequencing. We thank Prof. C. J. Leaver (University
  of Oxford, U.K.), Prof. K.-H. Süss (Institute of Plant Genetics and Crop Plant Research,
  Gatersleben, Germany), and Prof. L. J. Rogers (University of Aberystwyth, U.K.)
  for gifts of antiserum against maize mitochondrial cytochrome oxidase subunit 1
  and cytochrome bc1 complex, spinach FNR, and spinach ferredoxin, respectively. This
  work was supported by grants from The Royal Society and the Biotechnology and Biological
  Sciences Research Council.
article_processing_charge: No
article_type: original
author:
- first_name: Leonid A
  full_name: Sazanov, Leonid A
  id: 338D39FE-F248-11E8-B48F-1D18A9856A87
  last_name: Sazanov
  orcid: 0000-0002-0977-7989
- first_name: Paul
  full_name: Burrows, Paul
  last_name: Burrows
- first_name: Peter
  full_name: Nixon, Peter
  last_name: Nixon
citation:
  ama: 'Sazanov LA, Burrows P, Nixon P. The plastid ndh genes code for an NADH-specific
    dehydrogenase: Isolation of a complex I analogue from pea thylakoid membranes.
    <i>PNAS</i>. 1998;95(3):1319-1324. doi:<a href="https://doi.org/10.1073/pnas.95.3.1319">10.1073/pnas.95.3.1319</a>'
  apa: 'Sazanov, L. A., Burrows, P., &#38; Nixon, P. (1998). The plastid ndh genes
    code for an NADH-specific dehydrogenase: Isolation of a complex I analogue from
    pea thylakoid membranes. <i>PNAS</i>. National Academy of Sciences. <a href="https://doi.org/10.1073/pnas.95.3.1319">https://doi.org/10.1073/pnas.95.3.1319</a>'
  chicago: 'Sazanov, Leonid A, Paul Burrows, and Peter Nixon. “The Plastid Ndh Genes
    Code for an NADH-Specific Dehydrogenase: Isolation of a Complex I Analogue from
    Pea Thylakoid Membranes.” <i>PNAS</i>. National Academy of Sciences, 1998. <a
    href="https://doi.org/10.1073/pnas.95.3.1319">https://doi.org/10.1073/pnas.95.3.1319</a>.'
  ieee: 'L. A. Sazanov, P. Burrows, and P. Nixon, “The plastid ndh genes code for
    an NADH-specific dehydrogenase: Isolation of a complex I analogue from pea thylakoid
    membranes,” <i>PNAS</i>, vol. 95, no. 3. National Academy of Sciences, pp. 1319–1324,
    1998.'
  ista: 'Sazanov LA, Burrows P, Nixon P. 1998. The plastid ndh genes code for an NADH-specific
    dehydrogenase: Isolation of a complex I analogue from pea thylakoid membranes.
    PNAS. 95(3), 1319–1324.'
  mla: 'Sazanov, Leonid A., et al. “The Plastid Ndh Genes Code for an NADH-Specific
    Dehydrogenase: Isolation of a Complex I Analogue from Pea Thylakoid Membranes.”
    <i>PNAS</i>, vol. 95, no. 3, National Academy of Sciences, 1998, pp. 1319–24,
    doi:<a href="https://doi.org/10.1073/pnas.95.3.1319">10.1073/pnas.95.3.1319</a>.'
  short: L.A. Sazanov, P. Burrows, P. Nixon, PNAS 95 (1998) 1319–1324.
date_created: 2018-12-11T11:54:54Z
date_published: 1998-02-03T00:00:00Z
date_updated: 2022-09-01T13:47:05Z
day: '03'
doi: 10.1073/pnas.95.3.1319
extern: '1'
external_id:
  pmid:
  - '9448329 '
fulldoi: https://doi.org/10.1073/pnas.95.3.1319
intvolume: '        95'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://europepmc.org/article/pmc/18756
month: '02'
oa: 1
oa_version: None
page: 1319 - 1324
pmid: 1
publication: PNAS
publication_identifier:
  issn:
  - 0027-8424
publication_status: published
publisher: National Academy of Sciences
publist_id: '5130'
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'The plastid ndh genes code for an NADH-specific dehydrogenase: Isolation of
  a complex I analogue from pea thylakoid membranes'
type: journal_article
user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17
volume: 95
year: '1998'
...
---
_id: '4408'
abstract:
- lang: eng
  text: 'This paper presents a complete axiomatization of fully decidable propositional
    real-time linear temporal logics with past: the Event Clock Logic (ECL) and the
    Metric Interval Temporal Logic with past (MITL). The completeness proof consists
    of an effective proof building procedure for ECL. From this result we obtain a
    complete axiomatization of MITL by providing axioms translating MITL formulae
    into ECL formulae, the two logics being equally expressive. Our proof is structured
    to yield a similar axiomatization and procedure for interesting fragments of these
    logics, such as the linear temporal logic of the real numbers (LTR).'
acknowledgement: This work is supported in part by the ONR YIP award N00014-95-1-0520,
  by the NSF CAREER award CCR-9501708, by the NSF grant CCR-9504469, by the DARPA/NASA
  grant NAG2-1214, by the ARO MURI grant DAAH-04-96-1-0341, by the SRC contract 97-DC-324.041,
  the Belgian National Fund for Scientific Research (FNRS), the European Commission
  under WGs Aspire and Fireworks, the Portuguese FCT, and by Belgacom.
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Jean
  full_name: Raskin, Jean
  last_name: Raskin
- first_name: Pierre
  full_name: Schobbens, Pierre
  last_name: Schobbens
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000−0002−2985−7724
citation:
  ama: 'Raskin J, Schobbens P, Henzinger TA. Axioms for real-time logics. In: <i>Proceedings
    of the 9th Interantional Conference on Concurrency Theory</i>. Vol 1466. Schloss
    Dagstuhl - Leibniz-Zentrum für Informatik; 1998:219-236. doi:<a href="https://doi.org/10.1007/BFb0055625">10.1007/BFb0055625</a>'
  apa: 'Raskin, J., Schobbens, P., &#38; Henzinger, T. A. (1998). Axioms for real-time
    logics. In <i>Proceedings of the 9th Interantional Conference on Concurrency Theory</i>
    (Vol. 1466, pp. 219–236). Nice, France: Schloss Dagstuhl - Leibniz-Zentrum für
    Informatik. <a href="https://doi.org/10.1007/BFb0055625">https://doi.org/10.1007/BFb0055625</a>'
  chicago: Raskin, Jean, Pierre Schobbens, and Thomas A Henzinger. “Axioms for Real-Time
    Logics.” In <i>Proceedings of the 9th Interantional Conference on Concurrency
    Theory</i>, 1466:219–36. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 1998.
    <a href="https://doi.org/10.1007/BFb0055625">https://doi.org/10.1007/BFb0055625</a>.
  ieee: J. Raskin, P. Schobbens, and T. A. Henzinger, “Axioms for real-time logics,”
    in <i>Proceedings of the 9th Interantional Conference on Concurrency Theory</i>,
    Nice, France, 1998, vol. 1466, pp. 219–236.
  ista: 'Raskin J, Schobbens P, Henzinger TA. 1998. Axioms for real-time logics. Proceedings
    of the 9th Interantional Conference on Concurrency Theory. CONCUR: Concurrency
    Theory, LNCS, vol. 1466, 219–236.'
  mla: Raskin, Jean, et al. “Axioms for Real-Time Logics.” <i>Proceedings of the 9th
    Interantional Conference on Concurrency Theory</i>, vol. 1466, Schloss Dagstuhl
    - Leibniz-Zentrum für Informatik, 1998, pp. 219–36, doi:<a href="https://doi.org/10.1007/BFb0055625">10.1007/BFb0055625</a>.
  short: J. Raskin, P. Schobbens, T.A. Henzinger, in:, Proceedings of the 9th Interantional
    Conference on Concurrency Theory, Schloss Dagstuhl - Leibniz-Zentrum für Informatik,
    1998, pp. 219–236.
conference:
  end_date: 1998-09-11
  location: Nice, France
  name: 'CONCUR: Concurrency Theory'
  start_date: 1998-09-08
date_created: 2018-12-11T12:08:42Z
date_published: 1998-01-01T00:00:00Z
date_updated: 2022-08-24T12:15:17Z
day: '01'
doi: 10.1007/BFb0055625
extern: '1'
fulldoi: https://doi.org/10.1007/BFb0055625
intvolume: '      1466'
language:
- iso: eng
month: '01'
oa_version: None
page: 219 - 236
publication: Proceedings of the 9th Interantional Conference on Concurrency Theory
publication_identifier:
  isbn:
  - '9783540648963'
publication_status: published
publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik
publist_id: '323'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Axioms for real-time logics
type: conference
user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17
volume: 1466
year: '1998'
...
---
_id: '4410'
abstract:
- lang: eng
  text: "Rectangular automata are well suited for approximate modeling of continuous-discrete
    systems. The exact analysis of these automata is feasible for small examples but
    can encounter severe numerical problems for even medium-sized systems. This paper
    presents an analysis algorithm that uses conservative overapproximation to avoid
    these numerical problems. The algorithm is demonstrated on a simple benchmark
    system consisting of two connected tanks.\r\nSupported by the German Research
    Council (DFG) under grant Ko1430/3 in the special program KONDISK (‘Continuous-discrete
    dynamics of technical systems’)."
acknowledgement: This research was supported in part by the ONR YIP award N00014-95-1-0520,
  by the NSF CAREER award CCR-9501708, by the NSF grant CCR-9504469, by the DARPA/NASA
  grant NAG2-1214, by the ARO MURI grant DAAH-04-96-1-0341, and by the SRC contract
  97-DC-324.041.
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Jörg
  full_name: Preußig, Jörg
  last_name: Preußig
- first_name: Stefan
  full_name: Kowalewski, Stefan
  last_name: Kowalewski
- first_name: Howard
  full_name: Wong Toi, Howard
  last_name: Wong Toi
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000−0002−2985−7724
citation:
  ama: 'Preußig J, Kowalewski S, Wong Toi H, Henzinger TA. An algorithm for the approximative
    analysis of rectangular automata. In: <i>Proceedings of the 5th International
    Symposium on Formal Techniques in Real-Time and Fault-Tolerant Systems</i>. Vol
    1486. Springer; 1998:228-240. doi:<a href="https://doi.org/10.1007/BFb0055350">10.1007/BFb0055350</a>'
  apa: 'Preußig, J., Kowalewski, S., Wong Toi, H., &#38; Henzinger, T. A. (1998).
    An algorithm for the approximative analysis of rectangular automata. In <i>Proceedings
    of the 5th International Symposium on Formal Techniques in Real-Time and Fault-Tolerant
    Systems</i> (Vol. 1486, pp. 228–240). Lyngby, Denmark: Springer. <a href="https://doi.org/10.1007/BFb0055350">https://doi.org/10.1007/BFb0055350</a>'
  chicago: Preußig, Jörg, Stefan Kowalewski, Howard Wong Toi, and Thomas A Henzinger.
    “An Algorithm for the Approximative Analysis of Rectangular Automata.” In <i>Proceedings
    of the 5th International Symposium on Formal Techniques in Real-Time and Fault-Tolerant
    Systems</i>, 1486:228–40. Springer, 1998. <a href="https://doi.org/10.1007/BFb0055350">https://doi.org/10.1007/BFb0055350</a>.
  ieee: J. Preußig, S. Kowalewski, H. Wong Toi, and T. A. Henzinger, “An algorithm
    for the approximative analysis of rectangular automata,” in <i>Proceedings of
    the 5th International Symposium on Formal Techniques in Real-Time and Fault-Tolerant
    Systems</i>, Lyngby, Denmark, 1998, vol. 1486, pp. 228–240.
  ista: 'Preußig J, Kowalewski S, Wong Toi H, Henzinger TA. 1998. An algorithm for
    the approximative analysis of rectangular automata. Proceedings of the 5th International
    Symposium on Formal Techniques in Real-Time and Fault-Tolerant Systems. FTRTFT:
    Formal Techniques in Real-Time and Fault-Tolerant Systems, LNCS, vol. 1486, 228–240.'
  mla: Preußig, Jörg, et al. “An Algorithm for the Approximative Analysis of Rectangular
    Automata.” <i>Proceedings of the 5th International Symposium on Formal Techniques
    in Real-Time and Fault-Tolerant Systems</i>, vol. 1486, Springer, 1998, pp. 228–40,
    doi:<a href="https://doi.org/10.1007/BFb0055350">10.1007/BFb0055350</a>.
  short: J. Preußig, S. Kowalewski, H. Wong Toi, T.A. Henzinger, in:, Proceedings
    of the 5th International Symposium on Formal Techniques in Real-Time and Fault-Tolerant
    Systems, Springer, 1998, pp. 228–240.
conference:
  end_date: 1998-09-18
  location: Lyngby, Denmark
  name: 'FTRTFT: Formal Techniques in Real-Time and Fault-Tolerant Systems'
  start_date: 1998-09-14
date_created: 2018-12-11T12:08:43Z
date_published: 1998-01-01T00:00:00Z
date_updated: 2022-08-24T12:01:57Z
day: '01'
doi: 10.1007/BFb0055350
extern: '1'
fulldoi: https://doi.org/10.1007/BFb0055350
intvolume: '      1486'
language:
- iso: eng
month: '01'
oa_version: None
page: 228 - 240
publication: Proceedings of the 5th International Symposium on Formal Techniques in
  Real-Time and Fault-Tolerant Systems
publication_identifier:
  isbn:
  - '9783540650034'
publication_status: published
publisher: Springer
publist_id: '320'
quality_controlled: '1'
scopus_import: '1'
status: public
title: An algorithm for the approximative analysis of rectangular automata
type: conference
user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17
volume: 1486
year: '1998'
...
---
_id: '4429'
abstract:
- lang: eng
  text: We study the reachability problem for hybrid automata. Automatic approaches,
    which attempt to construct the reachable region by symbolic execution, often do
    not terminate. In these cases, we require the user to guess the reachable region,
    and we use a theorem prover (Pvs) to verify the guess. We classify hybrid automata
    according to the theory in which their reachable region can be defined finitely.
    This is the theory in which the prover needs to operate in order to verify the
    guess. The approach is interesting, because an appropriate guess can often be
    deduced by extrapolating from the first few steps of symbolic execution.
acknowledgement: "This research was supported in part by the ONR YIP award N00014-95-1-0520,
  by the NSF CAREER award CCR-9501708, by the NSF grant CCR-9504469, by the AFOSR
  contract F49620-93-1-0056, by the ARO MURI grant DAAH-04-96-1-0341, by the ARPA
  grant NAG2-892, and by the SRC contract 95-DC-324.036.\r\nSupported by Lavoisier
  grant of the French Foreign Affairs Ministry and by SRI."
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000−0002−2985−7724
- first_name: Vlad
  full_name: Rusu, Vlad
  last_name: Rusu
citation:
  ama: 'Henzinger TA, Rusu V. Reachability verification for hybrid automata. In: <i>Proceedings
    of the 1st International Workshop on Hybrid Systems: Computation and Control</i>.
    Vol 1386. Springer; 1998:190-204. doi:<a href="https://doi.org/10.1007/3-540-64358-3_40">10.1007/3-540-64358-3_40</a>'
  apa: 'Henzinger, T. A., &#38; Rusu, V. (1998). Reachability verification for hybrid
    automata. In <i>Proceedings of the 1st International Workshop on Hybrid Systems:
    Computation and Control</i> (Vol. 1386, pp. 190–204). Berkely, CA, United States
    of America: Springer. <a href="https://doi.org/10.1007/3-540-64358-3_40">https://doi.org/10.1007/3-540-64358-3_40</a>'
  chicago: 'Henzinger, Thomas A, and Vlad Rusu. “Reachability Verification for Hybrid
    Automata.” In <i>Proceedings of the 1st International Workshop on Hybrid Systems:
    Computation and Control</i>, 1386:190–204. Springer, 1998. <a href="https://doi.org/10.1007/3-540-64358-3_40">https://doi.org/10.1007/3-540-64358-3_40</a>.'
  ieee: 'T. A. Henzinger and V. Rusu, “Reachability verification for hybrid automata,”
    in <i>Proceedings of the 1st International Workshop on Hybrid Systems: Computation
    and Control</i>, Berkely, CA, United States of America, 1998, vol. 1386, pp. 190–204.'
  ista: 'Henzinger TA, Rusu V. 1998. Reachability verification for hybrid automata.
    Proceedings of the 1st International Workshop on Hybrid Systems: Computation and
    Control. HSCC: Hybrid Systems - Computation and Control, LNCS, vol. 1386, 190–204.'
  mla: 'Henzinger, Thomas A., and Vlad Rusu. “Reachability Verification for Hybrid
    Automata.” <i>Proceedings of the 1st International Workshop on Hybrid Systems:
    Computation and Control</i>, vol. 1386, Springer, 1998, pp. 190–204, doi:<a href="https://doi.org/10.1007/3-540-64358-3_40">10.1007/3-540-64358-3_40</a>.'
  short: 'T.A. Henzinger, V. Rusu, in:, Proceedings of the 1st International Workshop
    on Hybrid Systems: Computation and Control, Springer, 1998, pp. 190–204.'
conference:
  end_date: 1998-04-15
  location: Berkely, CA, United States of America
  name: 'HSCC: Hybrid Systems - Computation and Control'
  start_date: 1998-04-13
date_created: 2018-12-11T12:08:48Z
date_published: 1998-01-01T00:00:00Z
date_updated: 2022-08-24T11:29:14Z
day: '01'
doi: 10.1007/3-540-64358-3_40
extern: '1'
fulldoi: https://doi.org/10.1007/3-540-64358-3_40
intvolume: '      1386'
language:
- iso: eng
month: '01'
oa_version: None
page: 190 - 204
publication: 'Proceedings of the 1st International Workshop on Hybrid Systems: Computation
  and Control'
publication_identifier:
  isbn:
  - '9783540643586'
publication_status: published
publisher: Springer
publist_id: '299'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Reachability verification for hybrid automata
type: conference
user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17
volume: 1386
year: '1998'
...
---
_id: '4430'
alternative_title:
- LNCS
article_processing_charge: No
citation:
  ama: 'Henzinger TA, ed. <i>HSCC: Hybrid Systems—Computation and Control</i>. Vol
    1386. Springer; 1998. doi:<a href="https://doi.org/10.1007/3-540-64358-3">10.1007/3-540-64358-3</a>'
  apa: 'Henzinger, T. A. (Ed.). (1998). <i>HSCC: Hybrid Systems—Computation and Control</i>
    (Vol. 1386). Presented at the HSCC: Hybrid Systems: Computation and Control, Berkeley,
    CA, United States of America: Springer. <a href="https://doi.org/10.1007/3-540-64358-3">https://doi.org/10.1007/3-540-64358-3</a>'
  chicago: 'Henzinger, Thomas A, ed. <i>HSCC: Hybrid Systems—Computation and Control</i>.
    Vol. 1386. Springer, 1998. <a href="https://doi.org/10.1007/3-540-64358-3">https://doi.org/10.1007/3-540-64358-3</a>.'
  ieee: 'T. A. Henzinger, Ed., <i>HSCC: Hybrid Systems—Computation and Control</i>,
    vol. 1386. Springer, 1998.'
  ista: 'Henzinger TA ed. 1998. HSCC: Hybrid Systems—Computation and Control, Springer,p.'
  mla: 'Henzinger, Thomas A., editor. <i>HSCC: Hybrid Systems—Computation and Control</i>.
    Vol. 1386, Springer, 1998, doi:<a href="https://doi.org/10.1007/3-540-64358-3">10.1007/3-540-64358-3</a>.'
  short: 'T.A. Henzinger, ed., HSCC: Hybrid Systems—Computation and Control, Springer,
    1998.'
conference:
  end_date: 1998-04-15
  location: Berkeley, CA, United States of America
  name: 'HSCC: Hybrid Systems: Computation and Control'
  start_date: 1998-04-13
date_created: 2018-12-11T12:08:49Z
date_published: 1998-01-01T00:00:00Z
date_updated: 2022-08-24T11:36:03Z
day: '01'
doi: 10.1007/3-540-64358-3
editor:
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000-0002-2985-7724
extern: '1'
fulldoi: https://doi.org/10.1007/3-540-64358-3
intvolume: '      1386'
language:
- iso: eng
month: '01'
oa_version: None
publication_identifier:
  isbn:
  - 978-3-540-64358-6
publication_status: published
publisher: Springer
publist_id: '300'
status: public
title: 'HSCC: Hybrid Systems—Computation and Control'
type: conference_editor
user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17
volume: 1386
year: '1998'
...
---
_id: '4486'
abstract:
- lang: eng
  text: 'The simulation preorder on state transition systems is widely accepted as
    a useful notion of refinement, both in its own right and as an efficiently checkable
    sufficient condition for trace containment. For composite systems, due to the
    exponential explosion of the state space, there is a need for decomposing a simulation
    check of the form P&lt; s Q into simpler simulation checks on the components of
    P and Q. We present an assume-guarantee rule that enables such a decomposition.
    To the best of our knowledge, this is the first assume-guarantee rule that applies
    to a refinement relation different from trace containment. Our rule is circular,
    and its soundness proof requires induction on trace trees. The proof is constructive:
    given simulation relations that witness the simulation preorder between corresponding
    components of P and Q, we provide a procedure for constructing a witness relation
    for P&lt; s Q. We also extend our assume-guarantee rule to account for fairness
    assumptions on transition systems'
acknowledgement: This research was supported in part by the Office of Naval Research
  Young Investigator award N00014-95-1-0520, by the National Science Foundation CAREER
  award CCR-9501708, by the National Science Foundation grant CCR-9504469, by the
  Defense Advanced Research Projects Agency grant NAG2-1214, by the Army Research
  Office MURI grant DAAH-04-96-1-0341, and by the Semiconductor Research Corporation
  contract 97-DC-324.041.
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000−0002−2985−7724
- first_name: Shaz
  full_name: Qadeer, Shaz
  last_name: Qadeer
- first_name: Sriram
  full_name: Rajamani, Sriram
  last_name: Rajamani
- first_name: Serdar
  full_name: Tasiran, Serdar
  last_name: Tasiran
citation:
  ama: 'Henzinger TA, Qadeer S, Rajamani S, Tasiran S. An assume-guarantee rule for
    checking simulation. In: <i>Proceedings of the 2nd International Conference on
    Formal Methods in Computer-Aided Design</i>. Vol 1522. Springer; 1998:421-432.
    doi:<a href="https://doi.org/10.1007/3-540-49519-3_27">10.1007/3-540-49519-3_27</a>'
  apa: 'Henzinger, T. A., Qadeer, S., Rajamani, S., &#38; Tasiran, S. (1998). An assume-guarantee
    rule for checking simulation. In <i>Proceedings of the 2nd International Conference
    on Formal Methods in Computer-Aided Design</i> (Vol. 1522, pp. 421–432). Palo
    Alto, CA, United States of America: Springer. <a href="https://doi.org/10.1007/3-540-49519-3_27">https://doi.org/10.1007/3-540-49519-3_27</a>'
  chicago: Henzinger, Thomas A, Shaz Qadeer, Sriram Rajamani, and Serdar Tasiran.
    “An Assume-Guarantee Rule for Checking Simulation.” In <i>Proceedings of the 2nd
    International Conference on Formal Methods in Computer-Aided Design</i>, 1522:421–32.
    Springer, 1998. <a href="https://doi.org/10.1007/3-540-49519-3_27">https://doi.org/10.1007/3-540-49519-3_27</a>.
  ieee: T. A. Henzinger, S. Qadeer, S. Rajamani, and S. Tasiran, “An assume-guarantee
    rule for checking simulation,” in <i>Proceedings of the 2nd International Conference
    on Formal Methods in Computer-Aided Design</i>, Palo Alto, CA, United States of
    America, 1998, vol. 1522, pp. 421–432.
  ista: 'Henzinger TA, Qadeer S, Rajamani S, Tasiran S. 1998. An assume-guarantee
    rule for checking simulation. Proceedings of the 2nd International Conference
    on Formal Methods in Computer-Aided Design. FMCAD: Formal Methods in Computer-Aided
    Design, LNCS, vol. 1522, 421–432.'
  mla: Henzinger, Thomas A., et al. “An Assume-Guarantee Rule for Checking Simulation.”
    <i>Proceedings of the 2nd International Conference on Formal Methods in Computer-Aided
    Design</i>, vol. 1522, Springer, 1998, pp. 421–32, doi:<a href="https://doi.org/10.1007/3-540-49519-3_27">10.1007/3-540-49519-3_27</a>.
  short: T.A. Henzinger, S. Qadeer, S. Rajamani, S. Tasiran, in:, Proceedings of the
    2nd International Conference on Formal Methods in Computer-Aided Design, Springer,
    1998, pp. 421–432.
conference:
  end_date: 1998-11-06
  location: Palo Alto, CA, United States of America
  name: 'FMCAD: Formal Methods in Computer-Aided Design'
  start_date: 1998-11-04
date_created: 2018-12-11T12:09:06Z
date_published: 1998-01-01T00:00:00Z
date_updated: 2022-08-24T10:00:50Z
day: '01'
doi: 10.1007/3-540-49519-3_27
extern: '1'
fulldoi: https://doi.org/10.1007/3-540-49519-3_27
intvolume: '      1522'
language:
- iso: eng
month: '01'
oa_version: None
page: 421 - 432
publication: Proceedings of the 2nd International Conference on Formal Methods in
  Computer-Aided Design
publication_identifier:
  isbn:
  - '9783540651918'
publication_status: published
publisher: Springer
publist_id: '242'
quality_controlled: '1'
scopus_import: '1'
status: public
title: An assume-guarantee rule for checking simulation
type: conference
user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17
volume: 1522
year: '1998'
...
---
_id: '4488'
abstract:
- lang: eng
  text: Assume-guarantee reasoning has long been advertised as an important method
    for decomposing proof obligations in system verification. Refinement mappings
    (homomorphisms) have long been advertised as an important method for solving the
    language-inclusion problem in practice. When confronted with large verification
    problems, we therefore attempted to make use of both techniques. We soon found
    that rather than offering instant solutions, the success of assume-guarantee reasoning
    depends critically on the construction of suitable abstraction modules, and the
    success of refinement checking depends critically on the construction of suitable
    witness modules. Moreover, as abstractions need to be witnessed, and witnesses
    abstracted, the process must be iterated. We present here the main lessons we
    learned from our experiments, in limn of a systematic and structured discipline
    for the compositional verification of reactive modules. An infrastructure to support
    this discipline, and automate parts of the verification, has been implemented
    in the tool Mocha.
acknowledgement: This work is supported in part by ONR YIP award N00014-95-1-0520,
  by NSF CAREER award CCR-9501708, by NSF grant CCR-9504469, by ARO MURI grant DAAH-04-96-1-0341,
  and by the SRC contract 97-DC-324.041.
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000−0002−2985−7724
- first_name: Shaz
  full_name: Qadeer, Shaz
  last_name: Qadeer
- first_name: Sriram
  full_name: Rajamani, Sriram
  last_name: Rajamani
citation:
  ama: 'Henzinger TA, Qadeer S, Rajamani S. You assume, we guarantee: Methodology
    and case studies. In: <i>Proceedings of the 10th International Conference on Computer
    Aided Verification</i>. Vol 1427. Springer; 1998:440-451. doi:<a href="https://doi.org/10.1007/BFb0028765">10.1007/BFb0028765</a>'
  apa: 'Henzinger, T. A., Qadeer, S., &#38; Rajamani, S. (1998). You assume, we guarantee:
    Methodology and case studies. In <i>Proceedings of the 10th International Conference
    on Computer Aided Verification</i> (Vol. 1427, pp. 440–451). Vancouver, Canada:
    Springer. <a href="https://doi.org/10.1007/BFb0028765">https://doi.org/10.1007/BFb0028765</a>'
  chicago: 'Henzinger, Thomas A, Shaz Qadeer, and Sriram Rajamani. “You Assume, We
    Guarantee: Methodology and Case Studies.” In <i>Proceedings of the 10th International
    Conference on Computer Aided Verification</i>, 1427:440–51. Springer, 1998. <a
    href="https://doi.org/10.1007/BFb0028765">https://doi.org/10.1007/BFb0028765</a>.'
  ieee: 'T. A. Henzinger, S. Qadeer, and S. Rajamani, “You assume, we guarantee: Methodology
    and case studies,” in <i>Proceedings of the 10th International Conference on Computer
    Aided Verification</i>, Vancouver, Canada, 1998, vol. 1427, pp. 440–451.'
  ista: 'Henzinger TA, Qadeer S, Rajamani S. 1998. You assume, we guarantee: Methodology
    and case studies. Proceedings of the 10th International Conference on Computer
    Aided Verification. CAV: Computer Aided Verification, LNCS, vol. 1427, 440–451.'
  mla: 'Henzinger, Thomas A., et al. “You Assume, We Guarantee: Methodology and Case
    Studies.” <i>Proceedings of the 10th International Conference on Computer Aided
    Verification</i>, vol. 1427, Springer, 1998, pp. 440–51, doi:<a href="https://doi.org/10.1007/BFb0028765">10.1007/BFb0028765</a>.'
  short: T.A. Henzinger, S. Qadeer, S. Rajamani, in:, Proceedings of the 10th International
    Conference on Computer Aided Verification, Springer, 1998, pp. 440–451.
conference:
  end_date: 1998-07-02
  location: Vancouver, Canada
  name: 'CAV: Computer Aided Verification'
  start_date: 1998-06-28
date_created: 2018-12-11T12:09:06Z
date_published: 1998-01-01T00:00:00Z
date_updated: 2022-09-05T07:31:52Z
day: '01'
doi: 10.1007/BFb0028765
extern: '1'
fulldoi: https://doi.org/10.1007/BFb0028765
intvolume: '      1427'
language:
- iso: eng
month: '01'
oa_version: None
page: 440 - 451
publication: Proceedings of the 10th International Conference on Computer Aided Verification
publication_identifier:
  isbn:
  - '9783540646082'
publication_status: published
publisher: Springer
publist_id: '239'
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'You assume, we guarantee: Methodology and case studies'
type: conference
user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17
volume: 1427
year: '1998'
...
---
_id: '4489'
abstract:
- lang: eng
  text: "Symbolic model checking, which enables the automatic verification of large
    systems, proceeds by calculating with expressions that represent state sets. Traditionally,
    symbolic model-checking tools arc based on backward state traversal; their basic
    operation is the function pre, which given a set of states, returns the set of
    all predecessor states. This is because specifiers usally employ formalisms with
    future-time modalities. which are naturally evaluated by iterating applications
    of pre. It has been recently shown experimentally that symbolic model checking
    can perform significantly better if it is based, instead, on forward state traversal;
    in this case, the basic operation is the function post, which given a set of states,
    returns the set of all successor states. This is because forward state traversal
    can ensure that only those parts of the state space are explored which are reachable
    from an initial state and relevant for satisfaction or violation of the specification;
    that is, errors can be detected as soon as possible.\r\nIn this paper, we investigate
    which specifications can be checked by symbolic forward state traversal. We formulate
    the problems of symbolic backward and forward model checking by means of two -calculi.
    The pre- calculus is based on the pre operation; the post- calculus, on the post
    operation. These two -calculi induce query logics, which augment fixpoint expressions
    with a boolean emptiness query. Using query logics, we are able to relate and
    compare the symbolic backward and forward approaches. In particular, we prove
    that all -regular (linear-time) specifications can be expressed as post- queries,
    and therefore checked using symbolic forward state traversal. On the other hand,
    we show that there are simple branching-time specifications that cannot be checked
    in this way."
acknowledgement: This work is supported in part by ONR YIP award N00014-95-1-0520,
  by NSF CAREER award CCR-9501708, by NSF grant CCR-9504469, by ARO MURI grant DAAH-04-96-1-0341,
  and by the SRC contract 97-DC-324.041.
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000−0002−2985−7724
- first_name: Orna
  full_name: Kupferman, Orna
  last_name: Kupferman
- first_name: Shaz
  full_name: Qadeer, Shaz
  last_name: Qadeer
citation:
  ama: 'Henzinger TA, Kupferman O, Qadeer S. From pre-historic to post-modern symbolic
    model checking. In: <i>Proceedings of the 10th International Conference on Computer
    Aided Verification</i>. Vol 1427. Springer; 1998:195-206. doi:<a href="https://doi.org/10.1007/BFb0028745">10.1007/BFb0028745</a>'
  apa: 'Henzinger, T. A., Kupferman, O., &#38; Qadeer, S. (1998). From pre-historic
    to post-modern symbolic model checking. In <i>Proceedings of the 10th International
    Conference on Computer Aided Verification</i> (Vol. 1427, pp. 195–206). Vancouver,
    Canada: Springer. <a href="https://doi.org/10.1007/BFb0028745">https://doi.org/10.1007/BFb0028745</a>'
  chicago: Henzinger, Thomas A, Orna Kupferman, and Shaz Qadeer. “From Pre-Historic
    to Post-Modern Symbolic Model Checking.” In <i>Proceedings of the 10th International
    Conference on Computer Aided Verification</i>, 1427:195–206. Springer, 1998. <a
    href="https://doi.org/10.1007/BFb0028745">https://doi.org/10.1007/BFb0028745</a>.
  ieee: T. A. Henzinger, O. Kupferman, and S. Qadeer, “From pre-historic to post-modern
    symbolic model checking,” in <i>Proceedings of the 10th International Conference
    on Computer Aided Verification</i>, Vancouver, Canada, 1998, vol. 1427, pp. 195–206.
  ista: 'Henzinger TA, Kupferman O, Qadeer S. 1998. From pre-historic to post-modern
    symbolic model checking. Proceedings of the 10th International Conference on Computer
    Aided Verification. CAV: Computer Aided Verification, LNCS, vol. 1427, 195–206.'
  mla: Henzinger, Thomas A., et al. “From Pre-Historic to Post-Modern Symbolic Model
    Checking.” <i>Proceedings of the 10th International Conference on Computer Aided
    Verification</i>, vol. 1427, Springer, 1998, pp. 195–206, doi:<a href="https://doi.org/10.1007/BFb0028745">10.1007/BFb0028745</a>.
  short: T.A. Henzinger, O. Kupferman, S. Qadeer, in:, Proceedings of the 10th International
    Conference on Computer Aided Verification, Springer, 1998, pp. 195–206.
conference:
  end_date: 1998-07-02
  location: Vancouver, Canada
  name: 'CAV: Computer Aided Verification'
  start_date: 1998-06-28
date_created: 2018-12-11T12:09:07Z
date_published: 1998-01-01T00:00:00Z
date_updated: 2022-08-24T09:19:53Z
day: '01'
doi: 10.1007/BFb0028745
extern: '1'
fulldoi: https://doi.org/10.1007/BFb0028745
intvolume: '      1427'
language:
- iso: eng
month: '01'
oa_version: None
page: 195 - 206
publication: Proceedings of the 10th International Conference on Computer Aided Verification
publication_identifier:
  isbn:
  - '9783540646082'
publication_status: published
publisher: Springer
publist_id: '240'
quality_controlled: '1'
scopus_import: '1'
status: public
title: From pre-historic to post-modern symbolic model checking
type: conference
user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17
volume: 1427
year: '1998'
...
---
_id: '4490'
abstract:
- lang: eng
  text: "A specification formalism for reactive systems defines a class of Ω-languages.
    We call a specification formalism fully decidable if it is constructively closed
    under boolean operations and has a decidable satisfiability (nonemptiness) problem.
    There are two important, robust classes of Ω-languages that are definable by fully
    decidable formalisms. The Ω -reqular languages are definable by finite automata,
    or equivalcntly, by the Sequential Calculus. The counter-free Ω-regular languages
    are definable by temporal logic, or equivalcntly, by the first-order fragment
    of the Sequential Calculus. The gap between both classes can be closed by finite
    counting (using automata connectives), or equivalently, by projection (existential
    second-order quantification over letters).\r\nA specification formalism for real-time
    systems defines a class of timed Ω-langnages, whose letters have real-numbered
    time stamps. Two popular ways of specifying timing constraints rely on the use
    of clocks, and on the use of time bounds for temporal operators. However, temporal
    logics with clocks or time bounds have undecidable satisfiability problems, and
    finite automata with clocks (so-called timed automata) are not closed under complement.
    Therefore, two fully decidable restrictions of these formalisms have been proposed.
    In the first case, clocks are restricted to event clocks, which measure distances
    to immediately preceding or succeeding events only. In the second case, time bounds
    are restricted to nonsingular intervals, which cannot specify the exact punctuality
    of events. We show that the resulting classes of timed Ω-languages are robust,
    and we explain their relationship.\r\nFirst, we show that temporal logic with
    event clocks defines the same class of timed Ω-languages as temporal logic with
    nonsingular time bounds, and we identify a first-order monadic theory that also
    defines this class. Second, we show that if the ability of finite counting is
    added to these formalisms, we obtain the class of timed Ω-languages that are definable
    by finite automata with event clocks, or equivalently, by a restricted second-order
    extension of the monadic theory. Third, we show that if projection is added, we
    obtain the class of timed Ω-languages that are definable by timed automata, or
    equivalently, by a richer second-order extension of the monadic theory. These
    results identify three robust classes of timed Ω-languages, of which the third,
    while popular, is not definable by a, fully decidable formalism. By contrast,
    the first two classes are definable by fully decidable formalisms from temporal
    logic, from automata theory, and from monadic logic. Since the gap between these
    two classes can be closed by finite counting, we dub them the timed Ω-regular
    languages and the timed counter-free Ω-rcgular languages, respectively."
acknowledgement: This work is supported in part by the ONR YIP award N00014-95-1-0520,
  the NSF CAREER award CCR-9501708, the NSF grant CCR-9504469, the ARO MURI grant
  DAAH-04-96-1-0341, the SRC contract 97-DC-324.041, the Belgian National Fund for
  Scientific Research (FNRS), the European Commission under WGs Aspire and Fireworks,
  the Portuguese FCT, and by Belgacom.
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000−0002−2985−7724
- first_name: Jean
  full_name: Raskin, Jean
  last_name: Raskin
- first_name: Pierre
  full_name: Schobbens, Pierre
  last_name: Schobbens
citation:
  ama: 'Henzinger TA, Raskin J, Schobbens P. The regular real-time languages. In:
    <i>Proceedings of the 25th International Colloqium on Automata, Languages and
    Programming</i>. Vol 1443. Springer; 1998:580-591. doi:<a href="https://doi.org/10.1007/BFb0055086">10.1007/BFb0055086</a>'
  apa: 'Henzinger, T. A., Raskin, J., &#38; Schobbens, P. (1998). The regular real-time
    languages. In <i>Proceedings of the 25th International Colloqium on Automata,
    Languages and Programming</i> (Vol. 1443, pp. 580–591). Aalborg, Denmark: Springer.
    <a href="https://doi.org/10.1007/BFb0055086">https://doi.org/10.1007/BFb0055086</a>'
  chicago: Henzinger, Thomas A, Jean Raskin, and Pierre Schobbens. “The Regular Real-Time
    Languages.” In <i>Proceedings of the 25th International Colloqium on Automata,
    Languages and Programming</i>, 1443:580–91. Springer, 1998. <a href="https://doi.org/10.1007/BFb0055086">https://doi.org/10.1007/BFb0055086</a>.
  ieee: T. A. Henzinger, J. Raskin, and P. Schobbens, “The regular real-time languages,”
    in <i>Proceedings of the 25th International Colloqium on Automata, Languages and
    Programming</i>, Aalborg, Denmark, 1998, vol. 1443, pp. 580–591.
  ista: 'Henzinger TA, Raskin J, Schobbens P. 1998. The regular real-time languages.
    Proceedings of the 25th International Colloqium on Automata, Languages and Programming.
    ICALP: Automata, Languages and Programming, LNCS, vol. 1443, 580–591.'
  mla: Henzinger, Thomas A., et al. “The Regular Real-Time Languages.” <i>Proceedings
    of the 25th International Colloqium on Automata, Languages and Programming</i>,
    vol. 1443, Springer, 1998, pp. 580–91, doi:<a href="https://doi.org/10.1007/BFb0055086">10.1007/BFb0055086</a>.
  short: T.A. Henzinger, J. Raskin, P. Schobbens, in:, Proceedings of the 25th International
    Colloqium on Automata, Languages and Programming, Springer, 1998, pp. 580–591.
conference:
  end_date: 1998-07-17
  location: Aalborg, Denmark
  name: 'ICALP: Automata, Languages and Programming'
  start_date: 1998-07-13
date_created: 2018-12-11T12:09:07Z
date_published: 1998-01-01T00:00:00Z
date_updated: 2022-08-24T09:30:11Z
day: '01'
doi: 10.1007/BFb0055086
extern: '1'
fulldoi: https://doi.org/10.1007/BFb0055086
intvolume: '      1443'
language:
- iso: eng
month: '01'
oa_version: None
page: 580 - 591
publication: Proceedings of the 25th International Colloqium on Automata, Languages
  and Programming
publication_identifier:
  isbn:
  - '9783540647812'
publication_status: published
publisher: Springer
publist_id: '241'
quality_controlled: '1'
scopus_import: '1'
status: public
title: The regular real-time languages
type: conference
user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17
volume: 1443
year: '1998'
...
---
_id: '4491'
abstract:
- lang: eng
  text: We present two methods for translating nonlinear hybrid systems into linear
    hybrid automata. Properties of the nonlinear systems can then be inferred from
    the automatic analysis of the translated linear hybrid automata. The first method,
    called clock translation, replaces constraints on nonlinear variables by constraints
    on clock variables. The second method, called linear phase-portrait approximation,
    conservatively overapproximates the phase portrait of a hybrid automaton using
    piecewise-constant polyhedral differential inclusions. Both methods are sound
    for safety properties. We illustrate both methods by using HYTECH, a symbolic
    model checker for linear hybrid automata, to automatically check properties of
    a nonlinear temperature controller and of a predator-prey ecology
article_processing_charge: No
article_type: original
author:
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000−0002−2985−7724
- first_name: Pei
  full_name: Ho, Pei
  last_name: Ho
- first_name: Howard
  full_name: Wong Toi, Howard
  last_name: Wong Toi
citation:
  ama: Henzinger TA, Ho P, Wong Toi H. Algorithmic analysis of nonlinear hybrid systems.
    <i>IEEE Transactions on Automatic Control</i>. 1998;43(4):540-554. doi:<a href="https://doi.org/10.1109/9.664156
    ">10.1109/9.664156 </a>
  apa: Henzinger, T. A., Ho, P., &#38; Wong Toi, H. (1998). Algorithmic analysis of
    nonlinear hybrid systems. <i>IEEE Transactions on Automatic Control</i>. IEEE.
    <a href="https://doi.org/10.1109/9.664156 ">https://doi.org/10.1109/9.664156 </a>
  chicago: Henzinger, Thomas A, Pei Ho, and Howard Wong Toi. “Algorithmic Analysis
    of Nonlinear Hybrid Systems.” <i>IEEE Transactions on Automatic Control</i>. IEEE,
    1998. <a href="https://doi.org/10.1109/9.664156 ">https://doi.org/10.1109/9.664156
    </a>.
  ieee: T. A. Henzinger, P. Ho, and H. Wong Toi, “Algorithmic analysis of nonlinear
    hybrid systems,” <i>IEEE Transactions on Automatic Control</i>, vol. 43, no. 4.
    IEEE, pp. 540–554, 1998.
  ista: Henzinger TA, Ho P, Wong Toi H. 1998. Algorithmic analysis of nonlinear hybrid
    systems. IEEE Transactions on Automatic Control. 43(4), 540–554.
  mla: Henzinger, Thomas A., et al. “Algorithmic Analysis of Nonlinear Hybrid Systems.”
    <i>IEEE Transactions on Automatic Control</i>, vol. 43, no. 4, IEEE, 1998, pp.
    540–54, doi:<a href="https://doi.org/10.1109/9.664156 ">10.1109/9.664156 </a>.
  short: T.A. Henzinger, P. Ho, H. Wong Toi, IEEE Transactions on Automatic Control
    43 (1998) 540–554.
date_created: 2018-12-11T12:09:07Z
date_published: 1998-01-01T00:00:00Z
date_updated: 2022-08-23T14:34:35Z
day: '01'
doi: '10.1109/9.664156 '
extern: '1'
fulldoi: 'https://doi.org/10.1109/9.664156 '
intvolume: '        43'
issue: '4'
language:
- iso: eng
month: '01'
oa_version: None
page: 540 - 554
publication: IEEE Transactions on Automatic Control
publication_identifier:
  issn:
  - 0018-9162
publication_status: published
publisher: IEEE
publist_id: '238'
quality_controlled: '1'
status: public
title: Algorithmic analysis of nonlinear hybrid systems
type: journal_article
user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17
volume: 43
year: '1998'
...
---
_id: '4492'
abstract:
- lang: eng
  text: Hybrid automata model systems with both digital and analog components, such
    as embedded control programs. Many verification tasks for such programs can be
    expressed as reachability problems for hybrid automata. By improving on previous
    decidability and undecidability results, we identify a boundary between decidability
    and undecidability for the reachability problem of hybrid automata. On the positive
    side, we give an (optimal) PSPACE reachability algorithm for the case of initialized
    rectangular automata, where all analog variables follow independent trajectories
    within piecewise-linear envelopes and are reinitialized whenever the envelope
    changes. Our algorithm is based on the construction of a timed automaton that
    contains all reachability information about a given initialized rectangular automaton.
    The translation has practical significance for verification, because it guarantees
    the termination of symbolic procedures for the reachability analysis of initialized
    rectangular automata. The translation also preserves theω-languages of initialized
    rectangular automata with bounded nondeterminism. On the negative side, we show
    that several slight generalizations of initialized rectangular automata lead to
    an undecidable reachability problem. In particular, we prove that the reachability
    problem is undecidable for timed automata augmented with a single stopwatch.
acknowledgement: This research was supported in part by the Office of Naval Research
  Young Investigator Award N00014-95-1-0520, by the National Science Foundation CAREER
  award CCR-9501708, by the National Science Foundation Grant CCR-9504469, by the
  Air Force Office of Scientific Research Contract F49620-93-1-0056, by the Army Research
  Office MURI Grant DAAH-04-96-1-0341, by the Army Research Office Contract DAAH-04-94-G-0026,
  by the Defense Advanced Research Projects Agency Grant NAG2-892, and by the California
  PATH program.
article_processing_charge: No
article_type: original
author:
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000−0002−2985−7724
- first_name: Peter
  full_name: Kopke, Peter
  last_name: Kopke
- first_name: Anuj
  full_name: Puri, Anuj
  last_name: Puri
- first_name: P.
  full_name: Varaiya, P.
  last_name: Varaiya
citation:
  ama: Henzinger TA, Kopke P, Puri A, Varaiya P. What’s decidable about hybrid automata?
    <i>Journal of Computer and System Sciences</i>. 1998;57(1):94-124. doi:<a href="https://doi.org/10.1006/jcss.1998.1581">10.1006/jcss.1998.1581</a>
  apa: Henzinger, T. A., Kopke, P., Puri, A., &#38; Varaiya, P. (1998). What’s decidable
    about hybrid automata? <i>Journal of Computer and System Sciences</i>. Elsevier.
    <a href="https://doi.org/10.1006/jcss.1998.1581">https://doi.org/10.1006/jcss.1998.1581</a>
  chicago: Henzinger, Thomas A, Peter Kopke, Anuj Puri, and P. Varaiya. “What’s Decidable
    about Hybrid Automata?” <i>Journal of Computer and System Sciences</i>. Elsevier,
    1998. <a href="https://doi.org/10.1006/jcss.1998.1581">https://doi.org/10.1006/jcss.1998.1581</a>.
  ieee: T. A. Henzinger, P. Kopke, A. Puri, and P. Varaiya, “What’s decidable about
    hybrid automata?,” <i>Journal of Computer and System Sciences</i>, vol. 57, no.
    1. Elsevier, pp. 94–124, 1998.
  ista: Henzinger TA, Kopke P, Puri A, Varaiya P. 1998. What’s decidable about hybrid
    automata? Journal of Computer and System Sciences. 57(1), 94–124.
  mla: Henzinger, Thomas A., et al. “What’s Decidable about Hybrid Automata?” <i>Journal
    of Computer and System Sciences</i>, vol. 57, no. 1, Elsevier, 1998, pp. 94–124,
    doi:<a href="https://doi.org/10.1006/jcss.1998.1581">10.1006/jcss.1998.1581</a>.
  short: T.A. Henzinger, P. Kopke, A. Puri, P. Varaiya, Journal of Computer and System
    Sciences 57 (1998) 94–124.
date_created: 2018-12-11T12:09:08Z
date_published: 1998-01-01T00:00:00Z
date_updated: 2022-08-23T14:29:15Z
day: '01'
doi: 10.1006/jcss.1998.1581
extern: '1'
fulldoi: https://doi.org/10.1006/jcss.1998.1581
intvolume: '        57'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.sciencedirect.com/science/article/pii/S0022000098915811
month: '01'
oa: 1
oa_version: Published Version
page: 94 - 124
publication: Journal of Computer and System Sciences
publication_identifier:
  isbn:
  - 0022-0000
publication_status: published
publisher: Elsevier
publist_id: '237'
quality_controlled: '1'
status: public
title: What's decidable about hybrid automata?
type: journal_article
user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17
volume: 57
year: '1998'
...
---
_id: '4515'
abstract:
- lang: eng
  text: We summarize and reorganize some of the last decade's research on real-time
    extensions of temporal logic. Our main focus is on tableau constructions for model
    checking linear temporal formulas with timing constraints. In particular, we find
    that a great deal of real-time verification can be performed in polynomial space,
    but also that considerable care must be exercised in order to keep the real-time
    verification problem in polynomial space, or even decidable.
acknowledgement: This research was supported in part by the Office of Naval Research
  Young Investigator award N00014-95-1-0520, by the National Science Foundation CAREER
  award CCR-9501708, by the National Science Foundation grant CCR-9504469, by the
  Defense Advanced Research Projects Agency grant NAG2-1214, by the Army Research
  Office MURI grant DAAH-04-96-1-0341, and by the Semiconductor Research Corporation
  contract 97-DC-324.041.
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000−0002−2985−7724
citation:
  ama: 'Henzinger TA. It’s about time: Real-time logics reviewed. In: <i>Proceedings
    of the 9th Interantional Conference on Concurrency Theory</i>. Vol 1466. Schloss
    Dagstuhl - Leibniz-Zentrum für Informatik; 1998:439-454. doi:<a href="https://doi.org/10.1007/BFb0055640">10.1007/BFb0055640</a>'
  apa: 'Henzinger, T. A. (1998). It’s about time: Real-time logics reviewed. In <i>Proceedings
    of the 9th Interantional Conference on Concurrency Theory</i> (Vol. 1466, pp.
    439–454). Nice, France: Schloss Dagstuhl - Leibniz-Zentrum für Informatik. <a
    href="https://doi.org/10.1007/BFb0055640">https://doi.org/10.1007/BFb0055640</a>'
  chicago: 'Henzinger, Thomas A. “It’s about Time: Real-Time Logics Reviewed.” In
    <i>Proceedings of the 9th Interantional Conference on Concurrency Theory</i>,
    1466:439–54. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 1998. <a href="https://doi.org/10.1007/BFb0055640">https://doi.org/10.1007/BFb0055640</a>.'
  ieee: 'T. A. Henzinger, “It’s about time: Real-time logics reviewed,” in <i>Proceedings
    of the 9th Interantional Conference on Concurrency Theory</i>, Nice, France, 1998,
    vol. 1466, pp. 439–454.'
  ista: 'Henzinger TA. 1998. It’s about time: Real-time logics reviewed. Proceedings
    of the 9th Interantional Conference on Concurrency Theory. CONCUR: Concurrency
    Theory, LNCS, vol. 1466, 439–454.'
  mla: 'Henzinger, Thomas A. “It’s about Time: Real-Time Logics Reviewed.” <i>Proceedings
    of the 9th Interantional Conference on Concurrency Theory</i>, vol. 1466, Schloss
    Dagstuhl - Leibniz-Zentrum für Informatik, 1998, pp. 439–54, doi:<a href="https://doi.org/10.1007/BFb0055640">10.1007/BFb0055640</a>.'
  short: T.A. Henzinger, in:, Proceedings of the 9th Interantional Conference on Concurrency
    Theory, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 1998, pp. 439–454.
conference:
  end_date: 1998-09-11
  location: Nice, France
  name: 'CONCUR: Concurrency Theory'
  start_date: 1998-09-08
date_created: 2018-12-11T12:09:15Z
date_published: 1998-01-01T00:00:00Z
date_updated: 2022-08-23T14:24:08Z
day: '01'
doi: 10.1007/BFb0055640
extern: '1'
fulldoi: https://doi.org/10.1007/BFb0055640
intvolume: '      1466'
language:
- iso: eng
month: '01'
oa_version: None
page: 439 - 454
publication: Proceedings of the 9th Interantional Conference on Concurrency Theory
publication_identifier:
  isbn:
  - 978-3-540-64896-3
publication_status: published
publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik
publist_id: '214'
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'It''s about time: Real-time logics reviewed'
type: conference
user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17
volume: 1466
year: '1998'
...
---
_id: '4603'
abstract:
- lang: eng
  text: Alternating transition systems are a general model for composite systems which
    allow the study of collaborative as well as adversarial relationships between
    individual system components. Unlike in labeled transition systems, where each
    transition corresponds to a possible step of the system (which may involve some
    or all components), in alternating transition systems, each transition corresponds
    to a possible move in a game between the components. In this paper, we study refinement
    relations between alternating transition systems, such as “Does the implementation
    refine the set A of specification components without constraining the components
    not in A?” In particular, we generalize the definitions of the simulation and
    trace containment preorders from labeled transition systems to alternating transition
    systems. The generalizations are called alternating simulation and alternating
    trace containment. Unlike existing refinement relations, they allow the refinement
    of individual components within the context of a composite system description.
    We show that, like ordinary simulation, alternating simulation can be checked
    in polynomial time using a fixpoint computation algorithm. While ordinary trace
    containment is PSPACE-complete, we establish alternating trace containment to
    be EXPTIME-complete. Finally, we present logical characterizations for the two
    preorders in terms of ATL, a temporal logic capable of referring to games between
    system components.
acknowledgement: This work is supported in part by the ONR YIP award N00014-95-1-0520,
  by the NSF CAREER award CCR-9501708, by the NSF grants CCR-9504469, CCR-9628400,
  and CCR-9700061, by the DARPA/NASA grant NAG2-1214, by the ARO MURI grant DAAH-04-96-1-0341,
  by the SRC contract 97-DC-324.041, and by a grant from the Intel Corporation.
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Rajeev
  full_name: Alur, Rajeev
  last_name: Alur
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000−0002−2985−7724
- first_name: Orna
  full_name: Kupferman, Orna
  last_name: Kupferman
- first_name: Moshe
  full_name: Vardi, Moshe
  last_name: Vardi
citation:
  ama: 'Alur R, Henzinger TA, Kupferman O, Vardi M. Alternating refinement relations.
    In: <i>Proceedings of the 9th Interantional Conference on Concurrency Theory</i>.
    Vol 1466. Schloss Dagstuhl - Leibniz-Zentrum für Informatik; 1998:163-178. doi:<a
    href="https://doi.org/10.1007/BFb0055622">10.1007/BFb0055622</a>'
  apa: 'Alur, R., Henzinger, T. A., Kupferman, O., &#38; Vardi, M. (1998). Alternating
    refinement relations. In <i>Proceedings of the 9th Interantional Conference on
    Concurrency Theory</i> (Vol. 1466, pp. 163–178). Nice, France: Schloss Dagstuhl
    - Leibniz-Zentrum für Informatik. <a href="https://doi.org/10.1007/BFb0055622">https://doi.org/10.1007/BFb0055622</a>'
  chicago: Alur, Rajeev, Thomas A Henzinger, Orna Kupferman, and Moshe Vardi. “Alternating
    Refinement Relations.” In <i>Proceedings of the 9th Interantional Conference on
    Concurrency Theory</i>, 1466:163–78. Schloss Dagstuhl - Leibniz-Zentrum für Informatik,
    1998. <a href="https://doi.org/10.1007/BFb0055622">https://doi.org/10.1007/BFb0055622</a>.
  ieee: R. Alur, T. A. Henzinger, O. Kupferman, and M. Vardi, “Alternating refinement
    relations,” in <i>Proceedings of the 9th Interantional Conference on Concurrency
    Theory</i>, Nice, France, 1998, vol. 1466, pp. 163–178.
  ista: 'Alur R, Henzinger TA, Kupferman O, Vardi M. 1998. Alternating refinement
    relations. Proceedings of the 9th Interantional Conference on Concurrency Theory.
    CONCUR: Concurrency Theory, LNCS, vol. 1466, 163–178.'
  mla: Alur, Rajeev, et al. “Alternating Refinement Relations.” <i>Proceedings of
    the 9th Interantional Conference on Concurrency Theory</i>, vol. 1466, Schloss
    Dagstuhl - Leibniz-Zentrum für Informatik, 1998, pp. 163–78, doi:<a href="https://doi.org/10.1007/BFb0055622">10.1007/BFb0055622</a>.
  short: R. Alur, T.A. Henzinger, O. Kupferman, M. Vardi, in:, Proceedings of the
    9th Interantional Conference on Concurrency Theory, Schloss Dagstuhl - Leibniz-Zentrum
    für Informatik, 1998, pp. 163–178.
conference:
  end_date: 1998-09-11
  location: Nice, France
  name: 'CONCUR: Concurrency Theory'
  start_date: 1998-09-08
date_created: 2018-12-11T12:09:42Z
date_published: 1998-01-01T00:00:00Z
date_updated: 2022-08-23T09:50:34Z
day: '01'
doi: 10.1007/BFb0055622
extern: '1'
fulldoi: https://doi.org/10.1007/BFb0055622
intvolume: '      1466'
language:
- iso: eng
month: '01'
oa_version: None
page: 163 - 178
publication: Proceedings of the 9th Interantional Conference on Concurrency Theory
publication_identifier:
  isbn:
  - 978-3-540-64896-3
publication_status: published
publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik
publist_id: '104'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Alternating refinement relations
type: conference
user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17
volume: 1466
year: '1998'
...
---
_id: '4604'
acknowledgement: This research was supported in part by the ONR YIP award N00014-95-1-0520,
  by the NSF CAREER award CCR-9501708, by the NSF grant CCR-9504469, by the ARO MURI
  grant DAAH-04-96-1-0341, and by the SRC contract 97-DC-324.041.
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Rajeev
  full_name: Alur, Rajeev
  last_name: Alur
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000−0002−2985−7724
- first_name: Freddy
  full_name: Mang, Freddy
  last_name: Mang
- first_name: Shaz
  full_name: Qadeer, Shaz
  last_name: Qadeer
- first_name: Sriram
  full_name: Rajamani, Sriram
  last_name: Rajamani
- first_name: Serdar
  full_name: Tasiran, Serdar
  last_name: Tasiran
citation:
  ama: 'Alur R, Henzinger TA, Mang F, Qadeer S, Rajamani S, Tasiran S. Mocha: Modularity
    in model checking. In: <i>Proceedings of the 10th International Conference on
    Computer Aided Verification</i>. Vol 1427. Springer; 1998:521-525. doi:<a href="https://doi.org/10.1007/BFb0028774">10.1007/BFb0028774</a>'
  apa: 'Alur, R., Henzinger, T. A., Mang, F., Qadeer, S., Rajamani, S., &#38; Tasiran,
    S. (1998). Mocha: Modularity in model checking. In <i>Proceedings of the 10th
    International Conference on Computer Aided Verification</i> (Vol. 1427, pp. 521–525).
    Vancouver, Canada: Springer. <a href="https://doi.org/10.1007/BFb0028774">https://doi.org/10.1007/BFb0028774</a>'
  chicago: 'Alur, Rajeev, Thomas A Henzinger, Freddy Mang, Shaz Qadeer, Sriram Rajamani,
    and Serdar Tasiran. “Mocha: Modularity in Model Checking.” In <i>Proceedings of
    the 10th International Conference on Computer Aided Verification</i>, 1427:521–25.
    Springer, 1998. <a href="https://doi.org/10.1007/BFb0028774">https://doi.org/10.1007/BFb0028774</a>.'
  ieee: 'R. Alur, T. A. Henzinger, F. Mang, S. Qadeer, S. Rajamani, and S. Tasiran,
    “Mocha: Modularity in model checking,” in <i>Proceedings of the 10th International
    Conference on Computer Aided Verification</i>, Vancouver, Canada, 1998, vol. 1427,
    pp. 521–525.'
  ista: 'Alur R, Henzinger TA, Mang F, Qadeer S, Rajamani S, Tasiran S. 1998. Mocha:
    Modularity in model checking. Proceedings of the 10th International Conference
    on Computer Aided Verification. CAV: Computer Aided Verification, LNCS, vol. 1427,
    521–525.'
  mla: 'Alur, Rajeev, et al. “Mocha: Modularity in Model Checking.” <i>Proceedings
    of the 10th International Conference on Computer Aided Verification</i>, vol.
    1427, Springer, 1998, pp. 521–25, doi:<a href="https://doi.org/10.1007/BFb0028774">10.1007/BFb0028774</a>.'
  short: R. Alur, T.A. Henzinger, F. Mang, S. Qadeer, S. Rajamani, S. Tasiran, in:,
    Proceedings of the 10th International Conference on Computer Aided Verification,
    Springer, 1998, pp. 521–525.
conference:
  end_date: 1998-07-02
  location: Vancouver, Canada
  name: 'CAV: Computer Aided Verification'
  start_date: 1998-06-28
date_created: 2018-12-11T12:09:42Z
date_published: 1998-01-01T00:00:00Z
date_updated: 2022-08-23T09:06:21Z
day: '01'
doi: 10.1007/BFb0028774
extern: '1'
fulldoi: https://doi.org/10.1007/BFb0028774
intvolume: '      1427'
language:
- iso: eng
month: '01'
oa_version: None
page: 521 - 525
publication: Proceedings of the 10th International Conference on Computer Aided Verification
publication_identifier:
  isbn:
  - '9783540646082'
publication_status: published
publisher: Springer
publist_id: '103'
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Mocha: Modularity in model checking'
type: conference
user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17
volume: 1427
year: '1998'
...
---
_id: '4606'
abstract:
- lang: eng
  text: "In formal design verification, successful model checking is typically preceded
    by a laborious manual process of constructing design abstractions. We present
    a methodology for partially—and in some cases, fully—bypassing the abstraction
    process. For this purpose, we provide to the designer abstraction operators which,
    if used judiciously in the description of a design, structure the corresponding
    state space hierarchically. This structure can then be exploited by verification
    tools, and makes possible the automatic and exhaustive exploration of state spaces
    that would otherwise be out of scope for existing model checkers.\r\nSpecifically,
    we present the following contributions:\r\n- \t A temporal abstraction operator
    that aggregates transitions and hides intermediate steps. Mathematically, our
    abstraction operator is a function that maps a flat transition system into a two-level
    hierarchy where each atomic upper-level transition expands into an entire lower-level
    transition system. For example, an arithmetic operation may expand into a sequence
    of bit operations.\r\n- \t A BDD-based algorithm for the symbolic exploration
    of multi-level hierarchies of transition systems. The algorithm traverses a level-n
    transition by expanding the corresponding level-(n − 1) transition system on-the-fly.
    The level-n successors of a state are determined by computing a level-(n − 1)
    reach set, which is then immediately released from memory. In this fashion, we
    can exhaustively explore hierarchically structured state spaces whose flat counterparts
    cause memory overflows.\r\n- \t We experimentally demonstrate the efficiency of
    our method with three examples—a multiplier, a cache coherence protocol, and a
    multiprocessor system. In the first two examples, we obtain significant improvements
    in run times and peak BDD sizes over traditional state-space search. The third
    example cannot be model checked at all using conventional methods (without manual
    abstractions), but can be analyzed fully automatically using transition hierarchies."
acknowledgement: "This research was supported in part by the Office of Naval Research
  Young Investigator award N00014-95-1-0520, by the National Science Foundation CAREER
  award CCR-9501708, by the National Science Foundation grant CCR-9504469, by the
  Air Force Office of Scientific Research contract F49620-93-1-0056, by the Army Research
  Office MURI grant DAAH-04-96-1-0341, by the Advanced Research Projects Agency grant
  NAG2-892, and by the Semiconductor Research Corporation contract 95-DC-324.036.\r\n"
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Rajeev
  full_name: Alur, Rajeev
  last_name: Alur
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000−0002−2985−7724
- first_name: Sriram
  full_name: Rajamani, Sriram
  last_name: Rajamani
citation:
  ama: 'Alur R, Henzinger TA, Rajamani S. Symbolic exploration of transition hierarchies.
    In: <i>Proceedings of the 4th International Conference on Tools and Algorithms
    for the Construction and Analysis of Systems</i>. Vol 1384. Springer; 1998:330-344.
    doi:<a href="https://doi.org/10.1007/BFb0054181">10.1007/BFb0054181</a>'
  apa: 'Alur, R., Henzinger, T. A., &#38; Rajamani, S. (1998). Symbolic exploration
    of transition hierarchies. In <i>Proceedings of the 4th International Conference
    on Tools and Algorithms for the Construction and Analysis of Systems</i> (Vol.
    1384, pp. 330–344). Lisbon, Portugal: Springer. <a href="https://doi.org/10.1007/BFb0054181">https://doi.org/10.1007/BFb0054181</a>'
  chicago: Alur, Rajeev, Thomas A Henzinger, and Sriram Rajamani. “Symbolic Exploration
    of Transition Hierarchies.” In <i>Proceedings of the 4th International Conference
    on Tools and Algorithms for the Construction and Analysis of Systems</i>, 1384:330–44.
    Springer, 1998. <a href="https://doi.org/10.1007/BFb0054181">https://doi.org/10.1007/BFb0054181</a>.
  ieee: R. Alur, T. A. Henzinger, and S. Rajamani, “Symbolic exploration of transition
    hierarchies,” in <i>Proceedings of the 4th International Conference on Tools and
    Algorithms for the Construction and Analysis of Systems</i>, Lisbon, Portugal,
    1998, vol. 1384, pp. 330–344.
  ista: 'Alur R, Henzinger TA, Rajamani S. 1998. Symbolic exploration of transition
    hierarchies. Proceedings of the 4th International Conference on Tools and Algorithms
    for the Construction and Analysis of Systems. TACAS: Tools and Algorithms for
    the Construction and Analysis of Systems, LNCS, vol. 1384, 330–344.'
  mla: Alur, Rajeev, et al. “Symbolic Exploration of Transition Hierarchies.” <i>Proceedings
    of the 4th International Conference on Tools and Algorithms for the Construction
    and Analysis of Systems</i>, vol. 1384, Springer, 1998, pp. 330–44, doi:<a href="https://doi.org/10.1007/BFb0054181">10.1007/BFb0054181</a>.
  short: R. Alur, T.A. Henzinger, S. Rajamani, in:, Proceedings of the 4th International
    Conference on Tools and Algorithms for the Construction and Analysis of Systems,
    Springer, 1998, pp. 330–344.
conference:
  end_date: 1998-04-04
  location: Lisbon, Portugal
  name: 'TACAS: Tools and Algorithms for the Construction and Analysis of Systems'
  start_date: 1998-03-28
date_created: 2018-12-11T12:09:43Z
date_published: 1998-01-01T00:00:00Z
date_updated: 2022-08-23T08:44:36Z
day: '01'
doi: 10.1007/BFb0054181
extern: '1'
fulldoi: https://doi.org/10.1007/BFb0054181
intvolume: '      1384'
language:
- iso: eng
month: '01'
oa_version: None
page: 330 - 344
publication: Proceedings of the 4th International Conference on Tools and Algorithms
  for the Construction and Analysis of Systems
publication_identifier:
  isbn:
  - '9783540643562'
publication_status: published
publisher: Springer
publist_id: '102'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Symbolic exploration of transition hierarchies
type: conference
user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17
volume: 1384
year: '1998'
...
---
_id: '4639'
abstract:
- lang: eng
  text: 'An open system can be modeled as a two-player game between the system and
    its environment. At each round of the game, player 1 (the system) and player 2
    (the environment) independently and simultaneously choose moves, and the two choices
    determine the next state of the game. Properties of open systems can be modeled
    as objectives of these two-player games. For the basic objective of reachability-can
    player 1 force the game to a given set of target states?-there are three types
    of winning states, according to the degree of certainty with which player 1 can
    reach the target. From type-1 states, player 1 has a deterministic strategy to
    always reach the target. From type-2 states, player 1 has a randomized strategy
    to reach the target with probability 1. From type-3 states, player 1 has for every
    real ε&gt;0 a randomized strategy to reach the target with probability greater
    than 1-ε. We show that for finite state spaces, all three sets of winning states
    can be computed in polynomial time: type-1 states in linear time, and type-2 and
    type-3 states in quadratic time. The algorithms to compute the three sets of winning
    states also enable the construction of the winning and spoiling strategies. Finally,
    we apply our results by introducing a temporal logic in which all three kinds
    of winning conditions can be specified, and which can be model checked in polynomial
    time. This logic, called Randomized ATL, is suitable for reasoning about randomized
    behavior in open (two-agent) as well as multi-agent systems'
article_processing_charge: No
author:
- first_name: Luca
  full_name: De Alfaro, Luca
  last_name: De Alfaro
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000−0002−2985−7724
- first_name: Orna
  full_name: Kupferman, Orna
  last_name: Kupferman
citation:
  ama: 'De Alfaro L, Henzinger TA, Kupferman O. Concurrent reachability games. In:
    <i> Proceedings 39th Annual Symposium on Foundations of Computer Science</i>.
    IEEE; 1998:564-575. doi:<a href="https://doi.org/10.1109/SFCS.1998.743507  ">10.1109/SFCS.1998.743507 
    </a>'
  apa: 'De Alfaro, L., Henzinger, T. A., &#38; Kupferman, O. (1998). Concurrent reachability
    games. In <i> Proceedings 39th Annual Symposium on Foundations of Computer Science</i>
    (pp. 564–575). Palo Alto, CA, United States of America: IEEE. <a href="https://doi.org/10.1109/SFCS.1998.743507 
    ">https://doi.org/10.1109/SFCS.1998.743507  </a>'
  chicago: De Alfaro, Luca, Thomas A Henzinger, and Orna Kupferman. “Concurrent Reachability
    Games.” In <i> Proceedings 39th Annual Symposium on Foundations of Computer Science</i>,
    564–75. IEEE, 1998. <a href="https://doi.org/10.1109/SFCS.1998.743507  ">https://doi.org/10.1109/SFCS.1998.743507 
    </a>.
  ieee: L. De Alfaro, T. A. Henzinger, and O. Kupferman, “Concurrent reachability
    games,” in <i> Proceedings 39th Annual Symposium on Foundations of Computer Science</i>,
    Palo Alto, CA, United States of America, 1998, pp. 564–575.
  ista: 'De Alfaro L, Henzinger TA, Kupferman O. 1998. Concurrent reachability games.  Proceedings
    39th Annual Symposium on Foundations of Computer Science. FOCS: Foundations of
    Computer Science, 564–575.'
  mla: De Alfaro, Luca, et al. “Concurrent Reachability Games.” <i> Proceedings 39th
    Annual Symposium on Foundations of Computer Science</i>, IEEE, 1998, pp. 564–75,
    doi:<a href="https://doi.org/10.1109/SFCS.1998.743507  ">10.1109/SFCS.1998.743507 
    </a>.
  short: L. De Alfaro, T.A. Henzinger, O. Kupferman, in:,  Proceedings 39th Annual
    Symposium on Foundations of Computer Science, IEEE, 1998, pp. 564–575.
conference:
  end_date: 1998-11-11
  location: Palo Alto, CA, United States of America
  name: 'FOCS: Foundations of Computer Science'
  start_date: 1998-11-08
date_created: 2018-12-11T12:09:53Z
date_published: 1998-01-01T00:00:00Z
date_updated: 2022-08-22T14:09:02Z
day: '01'
doi: '10.1109/SFCS.1998.743507  '
extern: '1'
fulldoi: 'https://doi.org/10.1109/SFCS.1998.743507  '
language:
- iso: eng
month: '01'
oa_version: None
page: 564 - 575
publication: ' Proceedings 39th Annual Symposium on Foundations of Computer Science'
publication_identifier:
  isbn:
  - '0818691727'
publication_status: published
publisher: IEEE
publist_id: '68'
quality_controlled: '1'
status: public
title: Concurrent reachability games
type: conference
user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17
year: '1998'
...
---
_id: '6160'
abstract:
- lang: eng
  text: Natural isolates of C. elegans exhibit either solitary or social feeding behavior.
    Solitary foragers move slowly on a bacterial lawn and disperse across it, while
    social foragers move rapidly on bacteria and aggregate together. A loss-of-function
    mutation in the npr-1 gene, which encodes a predicted G protein–coupled receptor
    similar to neuropeptide Y receptors, causes a solitary strain to take on social
    behavior. Two isoforms of NPR-1 that differ at a single residue occur in the wild.
    One isoform, NPR-1 215F, is found exclusively in social strains, while the other
    isoform, NPR-1 215V, is found exclusively in solitary strains. An NPR-1 215V transgene
    can induce solitary feeding behavior in a wild social strain. Thus, isoforms of
    a putative neuropeptide receptor generate natural variation in C. elegans feeding
    behavior.
author:
- first_name: Mario
  full_name: de Bono, Mario
  id: 4E3FF80E-F248-11E8-B48F-1D18A9856A87
  last_name: de Bono
  orcid: 0000-0001-8347-0443
- first_name: Cornelia I
  full_name: Bargmann, Cornelia I
  last_name: Bargmann
citation:
  ama: de Bono M, Bargmann CI. Natural variation in a neuropeptide Y receptor homolog
    modifies social behavior and food response in C. elegans. <i>Cell</i>. 1998;94(5):679-689.
    doi:<a href="https://doi.org/10.1016/s0092-8674(00)81609-8">10.1016/s0092-8674(00)81609-8</a>
  apa: de Bono, M., &#38; Bargmann, C. I. (1998). Natural variation in a neuropeptide
    Y receptor homolog modifies social behavior and food response in C. elegans. <i>Cell</i>.
    Elsevier. <a href="https://doi.org/10.1016/s0092-8674(00)81609-8">https://doi.org/10.1016/s0092-8674(00)81609-8</a>
  chicago: Bono, Mario de, and Cornelia I Bargmann. “Natural Variation in a Neuropeptide
    Y Receptor Homolog Modifies Social Behavior and Food Response in C. Elegans.”
    <i>Cell</i>. Elsevier, 1998. <a href="https://doi.org/10.1016/s0092-8674(00)81609-8">https://doi.org/10.1016/s0092-8674(00)81609-8</a>.
  ieee: M. de Bono and C. I. Bargmann, “Natural variation in a neuropeptide Y receptor
    homolog modifies social behavior and food response in C. elegans,” <i>Cell</i>,
    vol. 94, no. 5. Elsevier, pp. 679–689, 1998.
  ista: de Bono M, Bargmann CI. 1998. Natural variation in a neuropeptide Y receptor
    homolog modifies social behavior and food response in C. elegans. Cell. 94(5),
    679–689.
  mla: de Bono, Mario, and Cornelia I. Bargmann. “Natural Variation in a Neuropeptide
    Y Receptor Homolog Modifies Social Behavior and Food Response in C. Elegans.”
    <i>Cell</i>, vol. 94, no. 5, Elsevier, 1998, pp. 679–89, doi:<a href="https://doi.org/10.1016/s0092-8674(00)81609-8">10.1016/s0092-8674(00)81609-8</a>.
  short: M. de Bono, C.I. Bargmann, Cell 94 (1998) 679–689.
date_created: 2019-03-21T10:32:06Z
date_published: 1998-09-04T00:00:00Z
date_updated: 2021-01-12T08:06:28Z
day: '04'
doi: 10.1016/s0092-8674(00)81609-8
extern: '1'
external_id:
  pmid:
  - '9741632'
fulldoi: https://doi.org/10.1016/s0092-8674(00)81609-8
intvolume: '        94'
issue: '5'
language:
- iso: eng
month: '09'
oa_version: None
page: 679-689
pmid: 1
publication: Cell
publication_identifier:
  issn:
  - 0092-8674
publication_status: published
publisher: Elsevier
quality_controlled: '1'
status: public
title: Natural variation in a neuropeptide Y receptor homolog modifies social behavior
  and food response in C. elegans
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 94
year: '1998'
...
---
_id: '3487'
abstract:
- lang: eng
  text: It is widely accepted that individual neurons in the central nervous system
    release only a single fast transmitter. The possibility of corelease of fast neurotransmitters
    was examined by making paired recordings from synaptically connected neurons in
    spinal cord slices. Unitary inhibitory postsynaptic currents generated at interneuron-motoneuron
    synapses consisted of a strychnine-sensitive, glycine receptor-mediated component
    and a bicuculline-sensitive, γ-aminobutyric acid (GABA)(A) receptor-mediated component.
    These results indicate that spinal interneurons release both glycine and GABA
    to activate functionally distinct receptors in their postsynaptic target cells.
    A subset of miniature synaptic currents also showed both components, consistent
    with corelease from individual synaptic vesicles.
acknowledgement: "See comment by Nicoll RA, Malenka RC (1998) Science 281:360-361\r\n"
article_processing_charge: No
article_type: original
author:
- first_name: Peter M
  full_name: Jonas, Peter M
  id: 353C1B58-F248-11E8-B48F-1D18A9856A87
  last_name: Jonas
  orcid: 0000-0001-5001-4804
- first_name: Joseph
  full_name: Bischofberger, Joseph
  last_name: Bischofberger
- first_name: Jürgen
  full_name: Sandkühler, Jürgen
  last_name: Sandkühler
citation:
  ama: Jonas PM, Bischofberger J, Sandkühler J. Corelease of two fast neurotransmitters
    at a central synapse. <i>Science</i>. 1998;281(5375):419-424. doi:<a href="https://doi.org/10.1126/science.281.5375.419">10.1126/science.281.5375.419</a>
  apa: Jonas, P. M., Bischofberger, J., &#38; Sandkühler, J. (1998). Corelease of
    two fast neurotransmitters at a central synapse. <i>Science</i>. American Association
    for the Advancement of Science. <a href="https://doi.org/10.1126/science.281.5375.419">https://doi.org/10.1126/science.281.5375.419</a>
  chicago: Jonas, Peter M, Joseph Bischofberger, and Jürgen Sandkühler. “Corelease
    of Two Fast Neurotransmitters at a Central Synapse.” <i>Science</i>. American
    Association for the Advancement of Science, 1998. <a href="https://doi.org/10.1126/science.281.5375.419">https://doi.org/10.1126/science.281.5375.419</a>.
  ieee: P. M. Jonas, J. Bischofberger, and J. Sandkühler, “Corelease of two fast neurotransmitters
    at a central synapse,” <i>Science</i>, vol. 281, no. 5375. American Association
    for the Advancement of Science, pp. 419–424, 1998.
  ista: Jonas PM, Bischofberger J, Sandkühler J. 1998. Corelease of two fast neurotransmitters
    at a central synapse. Science. 281(5375), 419–424.
  mla: Jonas, Peter M., et al. “Corelease of Two Fast Neurotransmitters at a Central
    Synapse.” <i>Science</i>, vol. 281, no. 5375, American Association for the Advancement
    of Science, 1998, pp. 419–24, doi:<a href="https://doi.org/10.1126/science.281.5375.419">10.1126/science.281.5375.419</a>.
  short: P.M. Jonas, J. Bischofberger, J. Sandkühler, Science 281 (1998) 419–424.
date_created: 2018-12-11T12:03:35Z
date_published: 1998-07-17T00:00:00Z
date_updated: 2022-08-29T14:52:38Z
day: '17'
doi: 10.1126/science.281.5375.419
extern: '1'
external_id:
  pmid:
  - '9665886 '
fulldoi: https://doi.org/10.1126/science.281.5375.419
intvolume: '       281'
issue: '5375'
language:
- iso: eng
month: '07'
oa_version: None
page: 419 - 424
pmid: 1
publication: Science
publication_identifier:
  issn:
  - 0036-8075
publication_status: published
publisher: American Association for the Advancement of Science
publist_id: '2900'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Corelease of two fast neurotransmitters at a central synapse
type: journal_article
user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17
volume: 281
year: '1998'
...
---
_id: '3488'
abstract:
- lang: eng
  text: We have examined gating and pharmacological characteristics of somatic K+
    channels in fast-spiking interneurons and regularly spiking principal neurons
    of hippocampal slices. In nucleated patches isolated from basket cells of the
    dentate gyrus, a fast delayed rectifier K+ current component that was highly sensitive
    to tetraethylammonium (TEA) and 4-aminopyridine (4- AP) (half-maximal inhibitory
    concentrations &lt;0.1 mM) predominated, contributing an average of 58% to the
    total K+ current in these cells. By contrast, in pyramidal neurons of the CA1
    region a rapidly inactivating A- type K+ current component that was TEA-resistant
    prevailed, contributing 61% to the total K+ current. Both types of neurons also
    showed small amounts of the K+ current component mainly found in the other type
    of neuron and, in addition, a slow delayed rectifier K+ current component with
    intermediate properties (sow inactivation, intermediate sensitivity to TEA). Single-cell
    RT-PCR analysis of mRNA revealed that Kv3 (Kv3.1, Kv3.2) subunit transcripts were
    expressed in almost all (89%) of the interneurons but only in 17% of the pyramidal
    neurons. In contrast, Kv4 (Kv4.2, Kv4.3) subunit mRNAs were present in 87% of
    pyramidal neurons but only in 55% of interneurons. Selective block of fast delayed
    rectifier K+ channels, presumably assembled from Kv3 subunits, by 4-AP reduced
    substantially the action potential frequency in interneurons. These results indicate
    that the differential expression of Kv3 and Kv4 subunits shapes the action potential
    phenotypes of principal neurons and interneurons in the cortex.
acknowledgement: Supported by German Israeli Foundation Grant I 0352–073.01/94 to
  P.J. and Deutsche Forschungsgemeinschaft Grant Mo 432/3–1 to H.M. We thank Drs.
  L. Y. Jan, D. McKinnon, O. Pongs, L. Salkoff, S. H. Snyder, and J. S. Trimmer for
  providing plasmids, Dr. D. J. Surmeier for sharing unpublished data, and Drs. J.
  Bischofberger and J. R. P. Geiger for critically reading this manuscript. M.M. and
  J.H.S. contributed equally to this work.
article_processing_charge: No
article_type: original
author:
- first_name: Marco
  full_name: Martina, Marco
  last_name: Martina
- first_name: Jobst
  full_name: Schultz, Jobst
  last_name: Schultz
- first_name: Heimo
  full_name: Ehmke, Heimo
  last_name: Ehmke
- first_name: Hannah
  full_name: Monyer, Hannah
  last_name: Monyer
- first_name: Peter M
  full_name: Jonas, Peter M
  id: 353C1B58-F248-11E8-B48F-1D18A9856A87
  last_name: Jonas
  orcid: 0000-0001-5001-4804
citation:
  ama: Martina M, Schultz J, Ehmke H, Monyer H, Jonas PM. Functional and molecular
    differences between voltage-gated K+ channels of fast-spiking interneurons and
    pyramidal neurons of rat hippocampus. <i>Journal of Neuroscience</i>. 1998;18(20):8111-8125.
    doi:<a href="https://doi.org/10.1523/JNEUROSCI.18-20-08111.1998">10.1523/JNEUROSCI.18-20-08111.1998</a>
  apa: Martina, M., Schultz, J., Ehmke, H., Monyer, H., &#38; Jonas, P. M. (1998).
    Functional and molecular differences between voltage-gated K+ channels of fast-spiking
    interneurons and pyramidal neurons of rat hippocampus. <i>Journal of Neuroscience</i>.
    Society for Neuroscience. <a href="https://doi.org/10.1523/JNEUROSCI.18-20-08111.1998">https://doi.org/10.1523/JNEUROSCI.18-20-08111.1998</a>
  chicago: Martina, Marco, Jobst Schultz, Heimo Ehmke, Hannah Monyer, and Peter M
    Jonas. “Functional and Molecular Differences between Voltage-Gated K+ Channels
    of Fast-Spiking Interneurons and Pyramidal Neurons of Rat Hippocampus.” <i>Journal
    of Neuroscience</i>. Society for Neuroscience, 1998. <a href="https://doi.org/10.1523/JNEUROSCI.18-20-08111.1998">https://doi.org/10.1523/JNEUROSCI.18-20-08111.1998</a>.
  ieee: M. Martina, J. Schultz, H. Ehmke, H. Monyer, and P. M. Jonas, “Functional
    and molecular differences between voltage-gated K+ channels of fast-spiking interneurons
    and pyramidal neurons of rat hippocampus,” <i>Journal of Neuroscience</i>, vol.
    18, no. 20. Society for Neuroscience, pp. 8111–8125, 1998.
  ista: Martina M, Schultz J, Ehmke H, Monyer H, Jonas PM. 1998. Functional and molecular
    differences between voltage-gated K+ channels of fast-spiking interneurons and
    pyramidal neurons of rat hippocampus. Journal of Neuroscience. 18(20), 8111–8125.
  mla: Martina, Marco, et al. “Functional and Molecular Differences between Voltage-Gated
    K+ Channels of Fast-Spiking Interneurons and Pyramidal Neurons of Rat Hippocampus.”
    <i>Journal of Neuroscience</i>, vol. 18, no. 20, Society for Neuroscience, 1998,
    pp. 8111–25, doi:<a href="https://doi.org/10.1523/JNEUROSCI.18-20-08111.1998">10.1523/JNEUROSCI.18-20-08111.1998</a>.
  short: M. Martina, J. Schultz, H. Ehmke, H. Monyer, P.M. Jonas, Journal of Neuroscience
    18 (1998) 8111–8125.
date_created: 2018-12-11T12:03:35Z
date_published: 1998-10-15T00:00:00Z
date_updated: 2022-08-29T14:20:39Z
day: '15'
doi: 10.1523/JNEUROSCI.18-20-08111.1998
extern: '1'
external_id:
  pmid:
  - '9763458'
fulldoi: https://doi.org/10.1523/JNEUROSCI.18-20-08111.1998
intvolume: '        18'
issue: '20'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6792860/
month: '10'
oa: 1
oa_version: None
page: 8111 - 8125
pmid: 1
publication: Journal of Neuroscience
publication_identifier:
  issn:
  - 0270-6474
publication_status: published
publisher: Society for Neuroscience
publist_id: '2899'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Functional and molecular differences between voltage-gated K+ channels of fast-spiking
  interneurons and pyramidal neurons of rat hippocampus
type: journal_article
user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17
volume: 18
year: '1998'
...
---
_id: '3506'
abstract:
- lang: eng
  text: A method of geometric morphing between a first object having a first shape
    and a second object having a second shape. The method includes the steps of generating
    a first Delaunay complex corresponding to the first shape and a second Delaunay
    complex corresponding to the second shape and generating a plurality of intermediary
    Delaunay complexes defined by a continuous family of mixed shapes corresponding
    to a mixing of the first shape and the second shape. The method further includes
    the steps of constructing a first skin corresponding to the first Delaunay complex
    and a second skin corresponding to the second Delaunay complex and constructing
    a plurality of intermediary skins corresponding to the plurality of intermediary
    Delaunay complexes. The first skin, second skin and plurality of intermediary
    skins may be visually displayed on an output device.
applicant:
- Raindrop Geomagic, Inc.
article_processing_charge: No
author:
- first_name: Herbert
  full_name: Edelsbrunner, Herbert
  id: 3FB178DA-F248-11E8-B48F-1D18A9856A87
  last_name: Edelsbrunner
  orcid: 0000-0002-9823-6833
- first_name: Ping
  full_name: Fu, Ping
  last_name: Fu
citation:
  ama: Edelsbrunner H, Fu P. Apparatus and method for geometric morphing. 1998.
  apa: Edelsbrunner, H., &#38; Fu, P. (1998). Apparatus and method for geometric morphing.
  chicago: Edelsbrunner, Herbert, and Ping Fu. “Apparatus and Method for Geometric
    Morphing,” 1998.
  ieee: H. Edelsbrunner and P. Fu, “Apparatus and method for geometric morphing.”
    1998.
  ista: Edelsbrunner H, Fu P. 1998. Apparatus and method for geometric morphing.
  mla: Edelsbrunner, Herbert, and Ping Fu. <i>Apparatus and Method for Geometric Morphing</i>.
    1998.
  short: H. Edelsbrunner, P. Fu, (1998).
date_created: 2018-12-11T12:03:41Z
date_published: 1998-12-15T00:00:00Z
date_updated: 2022-01-05T15:16:35Z
day: '15'
extern: '1'
ipc: G06T13/20 ; G06T2210/44
ipn: US5850229A
main_file_link:
- open_access: '1'
  url: https://patents.google.com/patent/US5850229A
month: '12'
oa: 1
oa_version: Published Version
publication_date: 1998-12-15
publist_id: '2881'
status: public
title: Apparatus and method for geometric morphing
type: patent
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '1998'
...
