- Associate Editor in "International Journal of Open Problems in Computer Science and Mathematics".
- Member Reviewer in Mathematical Reviews (a division of the American Mathematical Society).
- Chairman of Organizing Committee of National Colloquium on Numerical Analysis and Optimization, 1996, organized in Faculty of Science, Meknes, Morocco.
- Member of Scientific Committee of some National Conferences.
- Chairman/Member of Jury for several Theses.
- Reviewer of several Papers and Theses.