C. Bonnet is a member of the IFAC Technical Comittee on Robust Control, of the Program Committee of the Septiéme Conférence Internationale Francophone d'Automatique, CIFA 2012, Grenoble and of the CNU61 (National Council of Universities). She is also in the boards of the assciation Femmes et Mathématiques and of the consortium Cap'Maths. She is co-organizer of the “Séminaire du Plateau de Saclay”.

Frédéric Mazenc was associate editor for the conferences : 2012 Chinese Control and Decison Conference, Taiyuan, China, 2012 American Control Conference, Montréal, Canada, Septième Conférence Internationale Francophone d'Automatique, CIFA 2012, Grenoble, 50th IEEE Conference on Decision and Control and European Control Conference, Orlando, FL, USA, He is co-organizer of the `Séminaire du Plateau de Saclay”.

A. Quadrat is an Associate Editor` of the international journal “Multidimensional Systems and Signal Processing” (Springer). With Thierry Coquand, he organized a mini-workshop on constructive homological algebra, its applications and its implementations at the CIRM, Luminy, 24–28/01. He was a member of the Program Committee of the “7th International Workshop on Multidimensional Systems” (nDS'11, Poitiers, 05–07/09). He was an invited speaker at the “2nd workshop on Differential Equations by Algebraic Methods” (DEAM2, Linz, 09–11/02), at the conference “Functional Equations at Limoges” (FELIM, Limoges, 14–16/03), and at the conference “Modern Constructive Algebra $-$ Dedicated to Henri Lombardi” (Besançon, 15–16/10). He was also invited to give a lecture at the conference “Mathematics: Algorithms and Proofs” (MAP, Lorentz center, Leiden, 28–11/02–12), and to give a talk at RWTH-Aachen University (Graduiertenkolleg on “Experimental and Constructive Algebra”), and a talk at the seminar of the INRIA team project Non-A, INRIA Lille-Nord Europe. He also participated to the “7th International Workshop on Multidimensional Systems” (nDS'11, Poitiers, 05–07/09) where he presented two papers, gave a talk at the GDR SAR and a talk at the GDR EDP. He attended the conferences “MaGiX@LiX 2011” (Ecole Polytechnique, 19–24/09), “Equations différentielles et théorie de Galois” (IHES, 17–21/10), “Bicentenaire de la naissance d'Evariste Galois” (IHP, 24–28/11) and “Journées Nationales de Calcul Formel” (JNCF, Luminy, 14–18/11). Within the PHC Procope, he visited the Lehrstuhl B für Mathematik, RWTH Aachen University twice, to cowork with this group (12–18/06, 04–11/12). Finally, he was a referee for the PhD these entitled by “Linear Systems and Fliess Models” by Muhammad Khurram Zafar, Abdus Salam School of Mathematics Sciences, GC University Lahore, Pakistan, and “Reduced Order Multiobjective Control” by Christian Fischer, Mines-ParisTech, CMA, Sophia Antipolis, and he was a member of the jury for the PhD thesis “Analyse des erreurs d'estimateurs des dérivées de signaux bruités et applications”, by Dayan Liu of the team project Non-A, INRIA Lille-Nord Europe.

G. Regensburger coedited with Markus Rosenkranz and William Sit a double special issue on “Algebraic and Algorithmic Aspects of Differential and Integral Operators” (AADIOS) in Mathematics in Computer Science, which was published in February 2011, see [131] and http://www.springerlink.com/content/1661-8270/4/2-3/ . He coorganized the AADIOS Session at “Applications of Computer Algebra” (ACA'11, Houston, 27–30/06) and served as publicity chair and web master for “Mathematical Aspects of Computer and Information Sciences” (MACIS 2011, Beijing, 19–21/10). He was an invited speaker at “Functional Equations in LIMoges” (FELIM, Limoges, 14–16/03) and at the Symbolic Analysis workshop at the conference “Foundations of Computational Mathematics” (Symbolic Analysis@FoCM 2011, Budapest, 12–14/07). He was invited to give a talk at the Algorithms project, Joint Centre INRIA - Microsoft Research (Orsay, 31/03), and at the Laboratoire d'Informatique Fondamentale de Lille (LIFL), University of Lille I (Lille, 08/11). G. Regensburger gave contributed talks at the workshop “Constructive homological algebra methods, implementations and applications” (CIRM, Marseille, 24–28/01), at the “Second Workshop on Differential Equations by Algebraic Method” (DEAM2, Linz, 09–11/02), and at the Journées Nationales de Calcul Formel (JNCF, CIRM, Marseille 14–18/11). He participated in the conferences “MaGiX@LiX 2011” (Ecole Polytechnique, 19–24/09), “Equations différentielles et théorie de Galois” (IHES, 17–21/10), and “Célébration du bicentenaire de la naissance d'Évariste Galois” (IHP, 24–28/10).