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{{Short description|Austrian systems scientist}}
[[Image:Gerhard Chroust 2007.png|thumb|right|Gerhard Chroust in 2007 at the JKU Linz]]
'''Gerhard Chroust''' (born 23 April 1941) is an [[Austria]]n [[systems scientist]], and Professor Emeritus for [[Systems Engineering]] and [[Automation]] at the Institute of System Sciences at the [[Johannes Kepler University Linz]], [[Austria]]. Chroust is an authority in the fields of formal [[programming languages]] and interdisciplinary [[information management]].

== Biography ==
Gerhard Chroust was born in 1941 in [[Vienna]], [[Austria]]. He began studying [[Communications-electronics]] in 1959 and received a M.A. from [[TU Wien]] in 1964, a M.A. from the [[University of Pennsylvania]] in 1965, and a PhD from TU Wien in 1974.

From 1966 to 1991 Chroust worked at the [[IBM Laboratory Vienna]]. He started working at the Johannes Kepler University Linz and TU Wien in 1975 as lecturer for [[Microprogramming]]. In 1980 he became Assistant Professor in Computer Science, and lectured "Dataflow Mechanisms", "Dataflow Mechanisms" and later "Software Development Process" at the Johannes Kepler University Linz, at the [[University of Klagenfurt]] and at TU Wien. From 1992 until 2007 he was Professor for 'Systems Engineering and Automation' at the
Johannes Kepler University Linz and Head of the Department (in 2004 transferred into an Institute) of Systems Engineering and Automation from 1992 until 2007.<ref>[http://www.icsci.net/profile%20of%20Gerhard%20Chroust.htm Ing. Dr. Gerhard Chroust, M.S.] {{Webarchive|url=https://web.archive.org/web/20071124001546/http://www.icsci.net/profile%20of%20Gerhard%20Chroust.htm |date=2007-11-24 }} at www.icsci.net. Retrieved 3 June 2008.</ref>

Chroust is Editor-in-Chief of the [[International Federation for Systems Research|IFSR]] Newsletter a.o. Furthermore, he is Chairperson of the Editorial Board of the Book Series of the Austrian Computer Society (OCG), Editorial Board Member of several journals: The Journal of ''Microprocessors and Microsystems'' from 1976 until 1985, the ''IBM Programming Series'' from 1978 until 1990, the ''Computer Standards and Interfaces'' from 1992 until 2005, and
''[[Systems Research and Behavioral Science]]'' since 1994. In 1997 he was also on the Academic board of the ''[[International Encyclopedia of Systems and Cybernetics]]'', edited by [[Charles François (systems scientist)|Charles François]].

Further Chroust is organizationally active is as Secretary/Treasurer at the [[International Federation for Systems Research]], Vice-President of the Austrian Society of Cybernetic Studies and Advisor to Austrian Standards Committee.

=== Family ===
Gerhard Chroust has been married to Janie Chroust, née Weps, since 1968. They have two sons Martin (* 1971) and Stefan (* 1974), and five grandchildren Adrian (* 2001), Niklas (* 2004), Viktoria (* 2005), Rebecca (* 2007) and Ella (* 2008).

== Work ==
The research interests of Gerhard Chroust are in the fields of [[Software Engineering]] (Representation and Enactment of Software Process Models, Quality and Improvement of Development Processes), [[Systems Science]] and Systemic Aspects of [[Engineering]], [[Emergence]], History of [[Computers]] and [[Information Technology]], and Human Aspects of [[Software Development]].
<ref>[http://www.sea.uni-linz.ac.at/index.php?title=Em.Univ.-Prof_Dipl.-Ing.Dr._Gerhard_Chroust%2C_M.S. Em.Univ.-Prof Dipl.-Ing.Dr. Gerhard Chroust, M.S.] at www.sea.uni-linz.ac.at. Retrieved 3 June 2008.</ref>

=== Cybernetics and Programming Languages ===
In 1964 Chroust wrote his Masters Thesis "Kybernetisches Modell: Muehlespiel Masters" about [[cybernetics]] and continued to investigate cybernetic machines for another four years.

From the study of Theorem Proving 1965-66 Chroust continued to study formal definition of [[Programming Languages]], whereby he developed the "[[Vienna Development Method|Vienna Definition Language]]". He started studying [[compiler theory]] and the evaluation of [[arithmetic expression]]s from 1967 until 1975.

In the 1970s Chroust continued to study parallelism and [[simulation]] from 1969 until 1972, [[microprogramming]] from 1975 until 1990 and [[compiler]] building from 1976 until 1982.

=== Software engineering and information technology engineering ===
In the 1980s the scope of Chroust's research turned towards [[software engineering]] and its environment, and towards [[information technology engineering]] in the 1990s. He had a special interest in [[software inspection]]s and [[Workflow]] management.

== Publications ==
Chroust has written, co-authored and edited a dozen books and over 400 articles, papers and other publications.<ref>[http://fodok.jku.at/fodok/fodokjsp/list_pers.jsp?von=&bis=&per_id=1007&suche=Abschicken&suche=Abschicken Gerhard Chroust] Full list of publications. Retrieved 3 June 2008.</ref> A selection:
* 1980. ''Firmware, microprogramming, and restructurable hardware : proceedings of the IFIP Working Conference on Firmware, Microprogramming, and Restructurable Hardware, Linz, Austria, April 28-May 1, 1980.'' Edited with Jörg R. Mühlbacher.
* 1985. ''Formal models in programming : proceedings of the [[IFIP TC2]] Working Conference on the Role of Abstract Models in Information Processing, Vienna, Austria, 30 January - 1 February 1985''. Edited with E.J. Neuhold.
* 1989. ''Mikroprogrammierung und Rechnerentwurf''. Oldenbourg Verlag.
* 1992. ''Modelle der Software-Entwicklung - Aufbau und Interpretation von Vorgehensmodellen''. Oldenbourg Verlag Wien-München.
* 1994. ''Workflow management : challenges, paradigms, and products : CON '94''. Edited with A. Benczúr.
* 1994. ''Interdisciplinary Information Management Talks 94''. Edited with P. Doucek.
* 1995. ''Umfrage Workflow - Eine Momentaufnahme über die Verbreitung, Einsatz und Meinungen über Workflow in den deutschsprachigen Ländern.'' With J. Bergsmann. Oldenbourg Wien-München.
* 1995. ''Die Geschichte der Datenverarbeitung - Bibliographie zur Geschichtswand''. With H. Zemanek. Oldenbourg Wien/München
* 1998. ''Adolf Adam - 80 Jahre, eine Anekdotensammlung'', ÖSGK, Reports of the Austrian Society for Cybernetic Studies, Vienna.
* 2005. ''IFSR 2005 - The New Roles of Systems Sciences for a Knowledge-based Society, Kobe 2005''. Edited with [[Jifa Gu]]. Jaist Press, Komatsu, Japan.

== References ==
{{Reflist}}

== External links ==
* [http://www.sea.uni-linz.ac.at/index.php?title=Em.Univ.-Prof_Dipl.-Ing.Dr._Gerhard_Chroust%2C_M.S. Homepage Gerhard Chroust] at www.sea.uni-linz.ac.at.
* [https://web.archive.org/web/20071124001546/http://www.icsci.net/profile%20of%20Gerhard%20Chroust.htm Dr. Gerhard Chroust]. ICSCI, 2008.
* [http://ercim-news.ercim.org/content/view/127/275/ Article] {{Webarchive|url=https://web.archive.org/web/20080820022759/http://ercim-news.ercim.org/content/view/127/275/ |date=2008-08-20 }} ''25 Years of the IFSR: A Milestone in the Systems Sciences'', by Gerhard Chroust.
* [https://web.archive.org/web/20090530044008/http://www.ocg.at/publikationen/oj/pdfs/oj0803.pdf "Emeritus am Institut für Systems Engineering and Automation an der JKU Linz – ein Portrait"] by Helmut Malleck. pp 4–5. (in German).

{{Authority control}}

{{DEFAULTSORT:Chroust, Gerhard}}
[[Category:1941 births]]
[[Category:University of Pennsylvania alumni]]
[[Category:Systems scientists]]
[[Category:Living people]]
[[Category:Scientists from Vienna]]
[[Category:TU Wien alumni]]
[[Category:Academic staff of TU Wien]]
[[Category:Academic staff of Johannes Kepler University Linz]]
[[Category:IBM employees]]

Gerhard Chroust - Revision history

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