| scientific circle | Academia Europaea | Great Britain & N.Ireland | Member | 01/2015
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| |
| scientific committee/curatorship/institute | Académie Européenne des Sciences, des Arts et des Lettres | France | Member | 01/2003
-
| Korrespondierendes Mitglied |
| scientific committee/curatorship/institute | Advisory Board of the International Association for Shell and Spatial Structures (IASS) | United States of America | Member | 01/1999
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| Member |
| scientific circle | Akademie der Wissenschaften zu Lissabon | Portugal | Member | 01/2008
-
| Auswärtiges korrespondierendes Mitglied der Akademie der Wissenschaften zu Lissabon |
| scientific committee/curatorship/institute | Albanische Akademie der Wissenschaften | Albania | Member | 01/2006
-
| Ehrenmitglied |
| scientific committee/curatorship/institute | American Association for the Advancement of Science | United States of America | Member | 01/2014
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| |
| scientific circle | American Concrete Institute | United States of America | Member | 01/1990
-
| Mitglied |
| scientific circle | American Society of Civil Engineering | United States of America | Member | 01/1990
-
| Fellow |
| scientific committee/curatorship/institute | Androsch-Stiftung der Österreichischen Akademie der Wissenschaften | Austria | Chairman | 01/2004
-
09/2006 | Vorsitzender-Stellvertreter |
| scientific committee/curatorship/institute | Austro-Ukrainisches Institut für Wissenschaft und Technologie (AUI) | Austria | Chairman | 01/2006
-
| Ehrenpräsident |
| scientific committee/curatorship/institute | Awards Committee of the International Association for Computational Mechanics | | Member | 01/1994
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| Member |
| scientific committee/curatorship/institute | Beirat des Wissenschaftlichen Rates des Instituts Laue-Langewin (ILL) der ÖAW | Austria | Member | 01/1997
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09/2006 | Mitglied |
| scientific committee/curatorship/institute | Board der Werkstoffkompetenzzentrums-Leoben Forschungsges.m.b.H. (Material Center Leoben) der ÖAW | Austria | Chairman | 01/2001
-
| Vorsitzender |
| scientific circle | Braunschweigische Wissenschaftliche Gesellschaft | Germany | Member | 12/2008
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| Korrespondierendes Mitglied der Braunschweigischen Wissenschaftlichen Gesellschaft |
| scientific committee/curatorship/institute | Budgetkommission der math.-nat. Klasse der Österreichischen Akademie der Wissenschaften | Austria | Chairman | 10/1995
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09/2006 | 1995-2003 Obmann-Stellvertreter, 2003-2006 Obmann |
| scientific circle | Carl Friedrich von Weizsäcker | Austria | Manager | 12/2017
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| |
| scientific circle | Central European Association for Computational Mechanics | * | Member | 01/1990
-
| Mitglied |
| scientific circle | Chinese Academy of Engineering | China | Member | 01/2015
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| |
| scientific committee/curatorship/institute | Cluster of Excellence in Simulation Technology at the University of Stuttgart | Germany | Member | 01/2008
-
| Member of the International Advisory Board of the Cluster of Excellence in Simulation Technology at the University Suttgart |
| scientific committee/curatorship/institute | Committee on Finite Element Analysis of Reinforced Concrete Structures of the Society of Civil Eng. | United States of America | Member | 01/1981
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| Member |
| scientific committee/curatorship/institute | Council of the International Association for Computational Mechanics | | Member | 01/1994
-
| Member of the Executive Council |
| scientific committee/curatorship/institute | Council of the International Association for Computational Mechanics | | Member | 01/1983
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12/1994 | Member |
| scientific circle | Croatian Society of Mechanics | Croatia | Member | 01/2006
-
| Ehrenmitglied |
| scientific circle | Czech Society for Mechanics | Czech Republic | Member | 01/2009
-
| Ehrenmitglied der Czech Society for Mechanics |
| scientific committee/curatorship/institute | Department of Civil and Environmental Engineering of MIT | United States of America | Member | 01/2008
-
| Member of the Corporation Visiting Committee for the Department of Civil and Environmental Engineering of MIT |
| scientific committee/curatorship/institute | Ehrenbeirat der Montanuniversität Leoben | Austria | Member | 01/2005
-
| Mitglied |
| scientific circle | European Community on Computational Methods in Applied Sciences (ECCOMAS) | France | Chairman | 01/2005
-
| Präsident |
| scientific committee/curatorship/institute | European Council of Applied Sciences and Engineering (Euro-CASE) | | Member | 01/1998
-
| Member |
| scientific circle | European Mechanics Society (EUROMECH) | * | Member | 01/1990
-
| Mitglied |
| scientific committee/curatorship/institute | Europäische Akademie der Wissenschaften und Künste | Austria | Member | 01/1995
-
| Ordentliches Mitglied |
| scientific committee/curatorship/institute | Fachausschuss für Diskretisierende Methoden in der Festkörpermechanik der GAMM | Germany | Member | 01/1983
-
| Mitglied |
| scientific committee/curatorship/institute | Finanzkommission der Österreichischen Akademie der Wissenschaften | Austria | Member | 01/1995
-
09/2006 | Mitglied |
| scientific committee/curatorship/institute | Finanzkommission der Österreichischen Akademie der Wissenschaften | Austria | Chairman | 10/2003
-
09/2006 | Obmann |
| scientific committee/curatorship/institute | Fonds zur Förderung der wissenschaftlichen Forschung (FWF) | Austria | Chairman | 10/2003
-
12/2005 | Mitglied des Präsidiums |
| scientific committee/curatorship/institute | Georgian National Science Foundation in the State Grants Competition | Georgia | Member | 01/2008
-
| Member of the peer-reviewer panel for the Georgian National Science Foundation in the State Grants Competition |
| scientific circle | Gesellschaft für Angewandte Mathematik und Mechanik (GAMM) | Germany | Member | 01/1990
-
| Mitglied |
| scientific committee/curatorship/institute | Glasgow Research Partnership in Engineering | Ireland | Member | 01/2007
-
| Member of the International Advisory Board of the Glasgow Research Partnership in Engineering |
| scientific circle | Ingenieur-Akademie der Tschechischen Republik | Czech Republic | Member | 11/2007
-
| Auswärtiges Mitglied |
| scientific committee/curatorship/institute | Int Adv Board of the CoE on Advanced Materials and Structures at the IPPT of PAN | Poland | Member | 01/2000
-
| Member |
| scientific committee/curatorship/institute | Interim Council of the European Community on Computational Methods in Applied Sciences (ECCOMAS) | France | Chairman | 01/1994
-
| Member Managing Board |
| scientific committee/curatorship/institute | International Advisory Board of the National Telford Insitute | Great Britain & N.Ireland | Member | 01/2008
-
| Member of the International Advisory Board of the National Telford Institute |
| scientific circle | International Association for Boundary Element Methods (IABEM) | * | Member | 01/1990
-
| Mitglied |
| scientific circle | International Association for Bridge and Structural Engineering (IABSE) | United States of America | Member | 01/1990
-
| Mitglied |
| scientific circle | International Association for Computational Mechanics (IACM) | | Chairman | 01/1998
-
| Vice-President (Europe-Asia) |
| scientific circle | International Association for Computer Methods and Advances in Geomechanics (IACMAG) | United States of America | Member | 01/1990
-
| Mitglied |
| scientific circle | International Association for Shell and Spatial Structures | United States of America | Member | 01/1990
-
| Mitglied |
| scientific circle | International Society for the Interaction of Mechanics and Mathematics | United States of America | Member | 01/1990
-
| Mitglied |
| scientific committee/curatorship/institute | Jubiläumsfonds der Stadt Wien für die Österreichische Akademie der Wissenschaften | Austria | Chairman | 01/1998
-
09/2006 | Mitglied des Vorstandes |
| scientific committee/curatorship/institute | Komitee für das Austrian Programme for Advanced Research and Technology (APART) der ÖAW | Austria | Chairman | 10/2003
-
09/2006 | Vorsitzender |
| scientific committee/curatorship/institute | Komitee für das Austrian Programme for Advanced Research and Technology (APART) der ÖAW | Austria | Member | 01/1995
-
09/2006 | Mitglied |
| scientific committee/curatorship/institute | Komitee für die Vergabe von Doktorandenstipendien der Österreichischen Akademie der Wissenschaften | Austria | Chairman | 10/2003
-
09/2006 | Vorsitzender |
| scientific committee/curatorship/institute | Komitee für die Vergabe von Doktorandenstipendien der Österreichischen Akademie der Wissenschaften | Austria | Member | 01/1995
-
| Mitglied |
| scientific committee/curatorship/institute | Kommission der ÖAW für die wissenschaftliche Zusammenarbeit mit Dienststellen des BMLV | Austria | Member | 01/2002
-
| Mitglied |
| scientific committee/curatorship/institute | Kommission der ÖAW für die wissenschaftliche Zusammenarbeit mit Dienststellen des BMLV | Austria | Chairman | 01/2002
-
12/2003 | Obmann |
| scientific committee/curatorship/institute | Kommission für Max-Kade-Stipendien der Österreichischen Akademie der Wissenschaften | Austria | Member | 01/1993
-
| Mitglied |
| scientific committee/curatorship/institute | Kommission für das Richard-Georg-Plaschka-Legat der Österreichischen Akademie der Wissenschaften | Austria | Member | 01/2002
-
| Mitglied |
| scientific committee/curatorship/institute | Kommission für die Koordination der Kernfusionforschung in Österreich bei der ÖAW | Austria | Chairman | 10/2003
-
| Vorsitzender des wiss. Beirates |
| scientific committee/curatorship/institute | Kommission für die Verleihung des Erich-Schmid Preises der ÖAW | Austria | Member | 01/2001
-
| Mitglied |
| scientific committee/curatorship/institute | Kommission für die Verleihung des Erich-Schmid Preises der ÖAW | Austria | Chairman | 10/2003
-
09/2006 | Obmann |
| scientific committee/curatorship/institute | Kommission für die Verleihung des Erwin-Schrödinger Preises der ÖAW | Austria | Member | 01/2001
-
| Mitglied |
| scientific committee/curatorship/institute | Kommission für die Verleihung des Erwin-Schrödinger Preises der ÖAW | Austria | Chairman | 01/2003
-
09/2006 | Obmann |
| scientific committee/curatorship/institute | Kommission für die Verleihung des Ignaz-L.-Lieben Preises der ÖAW | Austria | Chairman | 10/2003
-
09/2006 | Vorsitzender des wiss. Beirates |
| scientific committee/curatorship/institute | Kroatische Akademie der Wissenschaften und Künste | Croatia | Member | 01/2004
-
| Korrespondierendes Mitglied |
| scientific committee/curatorship/institute | Kuratorium des Erich-Schmid-Institutes für Materialwissenschaften Komitee der ÖAW | Austria | Member | 01/1995
-
| Mitglied |
| scientific committee/curatorship/institute | Kuratorium des Institutes für Schallforschung der Österreichischen Akademie der Wissenschaften | Austria | Member | 01/2000
-
12/2007 | Mitglied |
| scientific committee/curatorship/institute | Kuratorium des Johann-Radon-Institute for Computational and Applied Mathematics der ÖAW | Austria | Member | 01/2003
-
12/2007 | Mitglied |
| scientific committee/curatorship/institute | Nationale Akademie der Wissenschaften der Ukraine | Ukraine | Member | 01/2009
-
| Auswärtiges Mitgleid |
| scientific committee/curatorship/institute | New York Academy of Sciences | United States of America | Member | 01/1994
-
| Mitglied |
| scientific committee/curatorship/institute | Panel PE08 European Research Council | Belgium | Member | 01/2011
-
12/2011 | |
| scientific committee/curatorship/institute | Panel PE08 European Research Council | Belgium | Member | 01/2008
-
| Member of the Panel PE08 of the European Research Council |
| scientific committee/curatorship/institute | Panel PE08 European Research Council | Belgium | Member | 01/2012
-
12/2012 | |
| scientific committee/curatorship/institute | Panel PE08 European Research Council | Belgium | Member | 01/2009
-
| Mitglied |
| scientific committee/curatorship/institute | Panel PE08 European Research Council | Belgium | Member | 01/2010
-
| Mitglied |
| scientific committee/curatorship/institute | Planungskommission der Österreichischen Akademie der Wissenschaften | Austria | Chairman | 01/2003
-
| Obmann |
| scientific circle | Polish Association for Computational Mechanics | Poland | Member | 01/1997
-
| Ehrenmitglied |
| scientific committee/curatorship/institute | Polnische Akademie der Wissenschaften | Poland | Member | 01/2000
-
| Auswärtiges Mitglied |
| scientific committee/curatorship/institute | Polnische Akademie der Wissenschaften und Künste | Poland | Member | 01/2004
-
| Auswärtiges Mitglied |
| scientific committee/curatorship/institute | Slowakische Akademie der Ingenieurwissenschaften | Slovakia | Member | 01/1998
-
| Mitglied |
| scientific circle | Slowakische Akademie der Wissenschaften | Slovakia | Member | 01/2008
-
| Ehrenmitglied der Slowakischen Akademie der Wissenschaften |
| scientific circle | Structural Engineering Institute | United States of America | Member | 01/1990
-
| Charter Member |
| scientific committee/curatorship/institute | Subcommittee on Nonlinear Analysis of Reinforced and Prestressed Concrete Shells of the ASCE-ACI ... | | Member | 01/1985
-
| Member |
| scientific committee/curatorship/institute | Technical Committee on Mathematical Modelling of Creep and Shrinkage of Concrete (IUTRLM) | | Member | 01/1982
-
| Member |
| scientific committee/curatorship/institute | Texas Tech University Civil Engineering Academy | United States of America | Member | 01/1993
-
| Fellow |
| scientific committee/curatorship/institute | U.S. National Academy of Engineering | United States of America | Member | 10/2004
-
| Auswärtiges Mitglied |
| scientific circle | Ungarische Akademie der Wissenschaften | Hungary | Member | 12/2007
-
| Ehrenmitglied |
| scientific committee/curatorship/institute | Wiener Wissenschafts- und Technologiefonds | Austria | Chairman | 01/2005
-
| Mitglied des Vorstands |
| scientific committee/curatorship/institute | acatech - Deutsche Akademie der Technikwissenschaften | Germany | Member | 01/2008
-
| Außerordentliches Mitglied von acatech - Deutscha Akademie der Technikwissenschaften |
| scientific committee/curatorship/institute | Österreichische Akademie der Wissenschaften | Austria | Member | 05/1985
-
| seit 1985 korrespondierendes Mitglied, seit 1992 wirkliches Mitglied |
| scientific committee/curatorship/institute | Österreichische Akademie der Wissenschaften | Austria | Chairman | 10/1995
-
09/2006 | 1995-2003 Generalsekretär, 2003-2006 Präsident |
| scientific circle | Österreichische Gesellschaft für Erdbebeningenieurwesen | Austria | Member | 01/1990
-
| Mitglied |
| scientific committee/curatorship/institute | Österreichische IIASA-Kommission bei der Österreichischen Akademie der Wissenschaften | Austria | Member | 01/1995
-
09/2006 | Mitglied |
| scientific circle | Österreichischer Ingenieur- und Architektenverein (ÖIAV) | Austria | Member | 01/1990
-
| Mitglied |
| scientific committee/curatorship/institute | Österreichischer Wissenschaftsrat | Austria | Member | 01/2003
-
| Mitglied |
| scientific committee/curatorship/institute | Österreichisches Nationalkomitee für Alpenforschung der Österreichischen Akademie der Wissenschaften | Austria | Member | 01/2000
-
| Vorsitzender |
| scientific committee/curatorship/institute | Österreichisches Nationalkomitee für International Strategy for Disaster Reduction - ISDR der ÖAW | Austria | Chairman | 01/2003
-
| Vorsitzender |
| scientific committee/curatorship/institute | Österreichisches Nationalkomitee für Theoretische und Angewandte Mechanik | Austria | Member | 01/1984
-
| Mitglied |